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GB 6722-2014: Safety regulations for blasting [including MODIFICATION 1]
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Basic data | Standard ID | GB 6722-2014 (GB6722-2014) | | Description (Translated English) | Safety regulations for blasting [including MODIFICATION 1] | | Sector / Industry | National Standard | | Classification of Chinese Standard | C66 | | Classification of International Standard | 13.100 | | Word Count Estimation | 59,540 | | Date of Issue | 12/5/2014 | | Date of Implementation | 7/1/2015 | | Older Standard (superseded by this standard) | GB 6722-2003 | | Quoted Standard | GB 18098; GB 50089; GA 837; GA 838; GA/T 848; GA 990; GA 991 | | Regulation (derived from) | Announcement of Newly Approved National Standards 2014 No. 27 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Standard specifies blasting and blasting unit purchase, transportation, storage, use, processing, inspection and destruction of blasting equipment safety requirements. This Standard is applicable to a variety of civilian blasting operations and Peopl | GB 6722-2014: Safety regulations for blasting [including MODIFICATION 1]---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Safety regulations for blasting
ICS 13.100
C66
National Standards of People's Republic of China
Replacing GB 6722-2003
Blasting Safety Regulations
Issued on. 2014-12-05
2015-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Preface Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 blasting grade 4
5 blasting design and construction, safety assessment and safety supervision 5
The basic provisions of blasting operations 6 7
7 Opencast Blasting 18
8 underground blasting 22
9 hot blast 28
10 30 Underwater Blasting
11 towns and demolition blasting shallow hole blasting 33
12 special blasting 36
13 Safety distance and allow the environmental impact of control 41
14 blasting unit using blasting equipment purchase, transportation, storage, etc. 50
References 55
Foreword
All the technical contents of this standard is mandatory.
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB 6722-2003 "Blasting Safety Regulations."
Compared with GB 6722-2003, the main changes are as follows.
--- Adjust the layout structure of chapters increased from the original 7 to 14;
--- Added the necessary terms and definitions (see Chapter 3);
--- Modified blasting grading standards (see Chapter 4);
--- Supplement and improve the content of blasting safety assessment, construction supervision (see 5.3, 5.4);
--- Emphasize the design requirements and test explosions Initiating Network (see 6.4);
--- Supplement and improve the high temperature blasting safety regulations (see Chapter 9);
--- Supplementary demolition explosion pretreatment requirements (see 11.3);
--- Supplement and improve the content of special blasting (see Chapter 12);
--- Improve the environmental impact of blasting safety control standards (see Chapter 13);
--- Supplement and perfect the peak particle velocity and main vibration frequency, emphasizing the blasting vibration monitoring for the simultaneous determination of particle vibration should be mutually
Vertical three components (see 13.2.2);
--- Shock in water to supplement the biological effects of water safety control standards (see 13.5);
--- Complement and complete the purchase of explosives, transportation, storage and use of provisions (see Chapter 14);
--- Remove the varieties to be eliminated blasting equipment, blasting and blasting processes.
This standard was proposed by the State Administration of Work Safety.
This standard by the National Standardization Technical Committee on non-coal mine production safety Safety Technical Committee (SAC/TC288/SC2) centralized.
This standard was drafted. China Engineering Blasting Association, the Guangdong Hongda Blasting Co., Ltd. Zhejiang high energy blasting,
Beijing Mining Research Institute, China Academy of Railway Sciences, Yangtze River Scientific Research Institute, Wuhan blasting companies, large construction group burst Chang
Break, Qingdao Haiphong Engineering Bureau, Henan Schindler blasting Co., Tangshan Kim blasting Limited, a new joint blasting Guizhou
Company, Wuhan Iron and Steel Group Co., Ltd. Environmental Safety Institute.
The main drafters of this standard. EXPLOSIVES Zhengbing Xu, Zhang Zhengzhong, Xiexian Qi, pipe Zhiqiang, Zhang excellence, pool Enan at Bao Shu, Jin-bin,
Zhang Zhengyu, Wang Qian, in Aaron, Zhoujia Han, Yan dragon thing, Mei Jinyu, Wang Hao, Lau, the high shade Tong, Gu Yicheng, Liu Honggang, Wuxin Xia,
Zhangyong Zhe, Lau book, Li Xiaojie, Young Love, Li Zhanjun, check being cleared, EXPLOSIVES, Xie source, Chen Shao Pan, Xuepei Xing, high literature.
This standard replaces the standards previously issued as follows.
--- GB 6722-1986, GB 6722-2003.
Blasting Safety Regulations
1 Scope
This standard specifies the blasting and blasting unit purchase, transportation, storage, use, processing, inspection and destruction of blasting equipment safety
skills requirement.
This standard applies to all kinds of civil and blasting the PLA, non-military purposes Chinese People's Armed Police Force in the
Blasting.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Determination of the content of toxic gases after GB 18098 Industrial Explosives
GB 50089 civilian blasting equipment engineering safety regulations
GA837 Civil Explosives depot requirements of public security
GA838 small civilian explosives depot safety norms
GA/T 848 residential units blasting explosives depot Safety Evaluation Guide
GA990 blasting units qualifications and management requirements
GA991 blasting project management requirements
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Blasting blasting
Use dynamite explosive energy acting on the media, in order to achieve a predetermined goal of the project work.
3.2
Blasting unit blastingunit
Permit holders blasting units engaged in blasting operations units, non-business and business sub-categories. Single non-commercial blasting operations
Bit is lawful production activities need-based unit, within a defined region to implement their own units blasting operations; commercial blasting units
It refers to an independent legal entity, to undertake the design and construction, safety assessment, safety supervision units blasting project.
3.3
Blasting engineering and technical personnel blastingengineeringandtechnicalpersonnel
It refers to a blasting professional knowledge and practical experience and pass the examination to obtain a certificate of qualification in the blasting art.
3.4
Blasting operations personnel blastingpersonnel; personalsengagedinblastingoperations
It means in blasting operations Blasting engineering and technical personnel, blasting staff, security staff and custodians.
3.5
Blasting harmful effects adverseeffectsofblasting
Blasting area of the explosion near the protected object may have harmful effects. The vibration caused by blasting, individual scattering substances, air blast,
Noise, water, shock, hydrodynamic pressure, swell, dust, harmful gases.
3.6
Blasting work environment blastingcircumstances
Refers to the area in and around the blast blasting safety impact of natural conditions, environmental conditions.
3.7
Rock blasting rockblasting
Use dynamite explosive energy of rock and soil media acting to achieve the desired goal of the project work.
3.8
Opencast Blasting surfaceblasting
Carried out on the surface of rock blasting.
3.9
Underground blasting undergroundblasting
Geotechnical underground (such as underground mines, underground chambers, tunnels, etc.) blasting operations.
3.10
Shallow hole blasting short-holeblasting
Blasthole diameter less than or equal to 50mm, borehole depth of not more than 5m of blasting operations.
3.11
Deep hole blasting deep-holeblasting
Blasthole diameter greater than 50mm, and the depth is greater than 5m blasting operations.
3.12
Blasting blastingincomplicatedsurroundings complex environment
At the edge of implosion 100m range concentration area residents, the environment or the large farms of important facilities, the measures taken to control harmful effects
Shi blasting implementation.
3.13
Blasting developmentblasting; headingblast
Roadway, tunnel excavation engineering blasting.
3.14
Chamber Blasting chamberblasting
Centralized or bar Chamber charge kits, rock blasting operations.
3.15
Underwater Demolition blastinginwater; underwaterblasting
Blasting in the water, underwater medium in the job.
3.16
Pre-splitting Blasting presplittingblasting
Excavation densely arranged along the boundary boreholes, take uncouple charge or filling low-power explosives, detonated before the main blast area, resulting in the explosion zone and
Reserved area is formed between the pre-crack, in order to weaken the main borehole blasting of rock damage to the reservations and forming smooth contour surface blasting.
3.17
Blasting smoothblasting
Excavation densely arranged along the boundary boreholes, take uncouple charge or filling low-power explosives, detonation area after the main burst, to form a flat
Contour surface blasting.
3.18
Delay blasting delayblasting
So that each delay detonator using kits according to different chronological initiation of blasting technology, blasting into millisecond delay, second delay blasting.
3.19
Demolition Blasting demolitionblasting
Take measures to control harmful effects, according to the design requirements for blasting demolition construction (structures) of.
3.20
Special blasting specialblasting
It refers to the use of special means of blasting, special blasting equipment, blasting demilitarized under certain circumstances for certain media carried. It contains special blasting
Explosive metal processing, special applications of the blast, shaped blasting, blasting oil combustion and high temperature condensate blasting and rescue
Emergency relief blasting.
3.21
Shaped blasting cumulativeblasting; blastingwithcavitycharge
Using shaped charge method of blasting operations.
3.22
Explosive working explosionworking
The explosive transient elevated temperature and pressure, the material high-speed deformation, cutting, mutual compound (welding) or structural phase transition material processing
method. Including explosive forming, welding, composite, synthetic diamond, hardening and strengthening, sintering, eliminating welding residual stress and the like.
3.23
Seismic exploration blasting seismicblasting; seismicprospectingblasting
Charge by utilizing source sparked seismic waves in the formation, geological structure exploration blasting.
3.24
Coal Mine Permissible explosives permittedexplosivesincoalmine
Upon approval, allows the use of dynamite in the coal mine.
3.25
Prefilled precharge
When a large number of deep hole blasting until all boreholes drilled previously in the acceptance of the borehole installed with drugs or explosives in the hole placement for more than
24h of charge operation.
3.26
Explosives blastingmaterialsandaccessories; blastingsupplies
Industrial explosives, detonating equipment and appliances collectively.
3.27
Initiation Method methodofinitiation
Use of detonating explosive devices to stimulate industrial methods.
3.28
Initiating Network firingcircuit; initiatingcircuit
To a plurality of detonation initiation kits transfer information and energy systems, including network electric detonator, detonator detonating network, detonating cord
Initiating Network, mixing initiating networks and digital electronic detonator network and so on.
3.29
Blind guns misfire; unexplodedcharge
For various reasons, failed to detonate as designed, causing the entire charge kits misfire or part of the charge.
3.30
Blasting vibration blastvibration
It refers to the blasting process causes a propagation medium for straight or curved reciprocating motion along its equilibrium position.
3.31
Particle vibration velocity particlevibrationvelocity
In the seismic waves, medium speed reciprocating motion of the particle.
3.32
Vibration frequency vibrationfrequency
The number of particles per second vibration.
3.33
Main vibration frequency mainvibrationfrequency
Medium wave frequency corresponding to the maximum amplitude of the particle.
3.34
Contingency plans emergencyresponseplan
Refers to the pre-established organization for emergency rescue work safety accidents, procedures, measures, and other aspects of responsibility and coordination
Programs and plans.
4 blasting rating
4.1 Blasting works by type of construction, a total dosage of blasting, blasting the environment and the complexity of the blasting material characteristics, points A, B, C, D four levels,
Levels of management. Engineering grade are shown in Table 1.
Table 1 Classification blasting
Job classification standards of measurement range
level
ABCD
Blasting rock blasting a first dose of Q/t 100≤Q 10≤Q < 100 0.5≤Q < 10 Q < 0.5
Blasting Demolition
Height Hb/m
Once BLASTING Qc/t
50≤H
0.5≤Q
30≤H < 50
0.2≤Q < 0.5
20≤H < 30
0.05≤Q < 0.2
H < 20
Q < 0.05
Special blasting d composite panels using a single dose of Q/t 0.4≤Q 0.2≤Q < 0.4 Q < 0.2
a form of traditional Chinese medicine refers to an amount corresponding to the level of open deep hole blasting. Other rock blasting appropriate dosage level corresponding factor. underground blasting 0.5; deep complex environment
Blasting 0.25; open-air chamber blasting 5.0; underground chambers blasting 2.0; 0.1 Underwater Drilling and Blasting, Underwater Reef and dredging, blasting silt squeeze 0.2.
b corresponding to the height of the table refers to the level of the building, plant and Water Tower Demolition blasting; blasting demolition of chimneys and cooling towers appropriate level corresponding to the height factor of 2
And 1.5.
Press c demolition blasting blasting dose grading project categories include. bridges, support, foundation, floor, single structure; urban shallow hole blasting also press
This standard grade; cofferdam demolition blasting appropriate level corresponding to the dose factor of 20.
d Chapter 12 listed other special blasting are graded according to level D management.
4.2 B, C, D class ships rock blasting, the case of the following conditions should be a corresponding increase in the level of a project.
--- Within the blasting area 1000m from a range of national, cultural or two particularly important building (structure) building materials and facilities;
There are three national cultural relics and scenic spots from within --- blasting area 500m range, important building (structure) building materials and facilities;
--- From the provincial cultural relics, hospitals, schools, residential buildings, office buildings and other important protected object within the blasting area 300m range.
4.3 B, C, D and urban demolition blasting grade shallow hole blasting, in case the following conditions should be a corresponding increase in the level of a project.
--- From Blasting have adjacent buildings (structures) or need to focus on the protection of surface and underground pipeline or within the blasting area 5m range;
--- Blasting collapse was not long enough safe direction when required folding blasting;
--- Blasting or explosive is in the downtown area, scenic area.
4.4 Internal and external environment of mine no safety hazards without blasting levels of management.
5 blasting design and construction, safety assessment and safety supervision
5.1 General provisions
5.1.1 Blasting design and construction, safety assessment and safety supervision should GA990 and GA991 execution.
5.1.2 Blasting design and construction, safety assessment and safety supervision should have the appropriate qualifications and practitioners range blasting unit commitment.
5.1.3 Blasting design and construction, safety assessment and safety supervision of the person in charge and key personnel should have the appropriate qualifications and job scope.
5.1.4 blasting unit design of this unit may not conduct a security assessment, the construction unit of the supervision shall blasting.
5.1.5 engaged in blasting design and construction, safety assessment and safety supervision blasting units, should be in accordance with relevant laws, regulations and standards
The implementation of the provisions of blasting design and construction, safety assessment and safety supervision, and bear the corresponding legal responsibility.
5.2 Blasting design and construction
5.2.1 Design Basis
5.2.1.1 blasting shall be designed to comply with the provisions of this standard and related industry standards, the provisions of local laws and regulations, according to the design of the power of attorney or contract
Depth and content requires preparation.
5.2.1.2 design unit should need to make survey design task book. Survey mission statement shall include.
--- Shape blasting objects, including topographic maps blasting area, building (structure) design documents, drawings and field measurement, data review;
--- Structure and Properties of blasting objects, including explosive geological maps, building (structure) building materials reinforcement diagram;
--- Effect of blasting effect of blasting defects, including large-scale geological structure and building (structure) building materials damaged condition;
--- Blow deleterious effects affect distribution within the region protected material.
5.2.1.3 designer site reconnaissance survey after the formation of the report, the test project summary reports, summary reports of similar projects and current local
Field test, the test report shall be used as the design basis.
Construction Process 5.2.1.4 Blasting found topographical measurements and geological conditions, the structure was demolished size, material, etc. in good condition with the original
Design based on inconsistent or environmental conditions have changed greatly, it is timely to modify the design or remedial measures.
5.2.1.5 Where the design documents did not pass the safety assessment should be required to re-evaluate the safety for the design; safety assessment require modification or increase in
Contents should be required to modify the supplement.
5.2.2 Design Files
5.2.2.1 shall prepare blasting blasting technical design documents.
5.2.2.2 mines and other repetitive deep hole blasting blasting design allows standard technical design.
5.2.2.3 Blasting should be made after blasting effects based on blasting technology design evaluation, a complete engineering design files.
5.2.2.4 blasting technical design, technical design standards and design changes as a supplementary document shall be signed and complete catalog archive.
5.2.3 Technical Design Content
5.2.3.1 blasting technical design is divided into two portions of the specification and drawings, it should include the following.
--- Project overview that blasting the object, the quality of the environment overview and relevant drawings blasting, blasting, duration, safety requirements;
--- Blasting technology program, the program compares the program's drilling and blasting parameters and associated drawings selected;
--- Initiation and detonation network design network diagram;
--- Safe design and protection, warning FIG.
5.2.3.2 Qualified blasting design should meet the following conditions.
--- Design qualification units comply with the requirements;
Qualifications and counting --- commitment to design and safety assessment of major blasting engineering and technical personnel of compliance;
--- Design file or design review by the safety assessment that the blasting design is technically feasible, safety and reliability.
5.2.3.3 complex environments blasting technical design environment should be established to deal with complex methods, measures and contingency plans.
5.2.4 Construction Organization Design
5.2.4.1 Construction design prepared by the construction unit, is responsible for the preparation of engineering and technical personnel held by blasting job security certificate rank and job
It should be consistent with the scope of the construction work.
5.2.4.2 blasting construction design should be based on technical design, tender documents, site survey construction unit owners attorney, answering tender
Documents were prepared.
5.2.4.3 Blasting construction organization design should include the following.
--- Construction organization and responsibilities;
--- Construction preparation work and construction layout plan;
--- Construction people, materials, machines and security arrangements, schedule, quality assurance measures;
--- Blasting equipment management, safety and security;
--- Civilization construction, environmental protection, accident prevention measures and contingency plans.
5.2.4.4 design and construction by the same blasting units bear blasting, allowing construction design and blasting technical design merge.
5.3 Security Assessment
5.3.1 required before approval by the public security organs blasting project, submit an application security assessment should be carried out.
5.3.2 blasting safety assessment based on.
--- National, local and industry regulations and design standards;
Security Assessment Security Assessment Unit --- contract and signed by the requester;
--- Design documents and design and construction of the main units qualification material;
--- Safety assessors site survey collected data.
5.3.3 blasting safety assessment should include.
Qualification --- blasting units for compliance;
Level --- blasting projects for compliance;
--- Whether the design is based on complete information;
--- Design methods, design parameters are reasonable;
Initiating Network --- whether reliable;
--- Design alternatives is feasible;
--- Deleterious effects that may affect the scope and presence is comprehensive;
--- Environmental safety measures to ensure project feasibility;
--- Develop contingency plans are appropriate.
5.3.4 A, B grade blasting safety assessment shall have at least two certified blasting technology has the appropriate job level and job scope
Participants; environment is very complex major blasting the invitation of the expert advice, and on the basis of the expert group advice on the preparation of blasting safety
Full assessment report.
Safety Evaluation Report 5.3.5 Content should be informative blasting, the conclusion should be clear.
Blasting Design 5.3.6 adopted by the safety assessment, the construction can not be arbitrarily changed. Negative security assessment by blasting technical design documents, should
Rewritten and re-evaluate. Construction materials such as found in the actual situation and to assess the time of submission does not match the need to modify the original design documents of major
Modify part should be re-submitted to the assessment.
5.4 Safety Supervision
5.4.1 The public security authorities for approval of blasting projects, the implementation of blasting operations should be carried out safety supervision.
5.4.2 blasting safety supervision main elements.
--- Blasting unit is in accordance with the design and construction;
--- Whether the adverse effects of blasting control within the design range;
--- Factual qualifications blasting operations personnel to stop unqualified personnel engaged in blasting operations;
--- Civil Explosives receive supervision, the implementation of repaying the system;
--- Supervise the implementation of blasting operations to abide by the relevant national standards and norms, and found illegal command illegal operations, the right to stop
Its blasting units and report to the public security organs entrusted.
5.4.3 blasting safety supervision unit supervision should be carefully prepared in the planning and implementation details to learn more about safety regulations, emergency plans later, and
Supervisors develop job responsibilities.
5.4.4 blasting safety supervision personnel shall blasting equipment requisitioned, repaying, the blasting operations, security checks after the explosion and gun handling all aspects of the real blind
Line construction site supervision, supervision and make records.
5.4.5 each blasting technical design shall be subject to supervisory agencies after the sign and acknowledge before their implementation. Organization and implementation of blasting work and supervision should sign and acknowledge
Blasting technical design coincides.
5.4.6 one of the following occurs, supervisory agencies shall issue a moratorium blasting operations.
--- Blasting serious irregularities with time to stop invalid;
--- Construction of a major security risk occurs shall cease when blasting in order to eliminate hidden dangers.
5.4.7 blasting safety supervision unit shall submit regular reports to the Security Supervision requester to submit safety supervision and related summary at the end of the project
Supervision of data.
6 basic provisions of blasting operations
6.1 Environmental blasting operations
6.1.1 before blasting to respond to natural conditions and environmental conditions around the area of the explosion the investigation, endanger the safety of the adverse environmental factors, and take
Necessary safety precautions.
6.1.2 Blasting workplaces of the following circumstances, should not be blasting operations.
--- Face 20m from the wind flow within the gas content of 1% or gas outburst signs;
--...
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