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(Specification for geological survey of small and medium hydropower projects)
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NB/T 10336-2019
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Basic data | Standard ID | NB/T 10336-2019 (NB/T10336-2019) | | Description (Translated English) | (Specification for geological survey of small and medium hydropower projects) | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | P59 | | Classification of International Standard | 27.140 | | Word Count Estimation | 143,193 | | Date of Issue | 2019-12-30 | | Date of Implementation | 2020-07-01 | | Issuing agency(ies) | National Energy Administration | NB/T 10336-2019: (Specification for geological survey of small and medium hydropower projects)---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.
Code for Engineering Geological Investigation
of Medium and Small Hydropower Projects
Energy Industry Standards of the People's Republic of China
Replace DL/T 5410–2009
Foreword
According to the "Notice of the National Energy Administration on Issuing the Second Batch of Industry Standard System (Revision) Plans in the Energy Sector in.2014" (Guoneng Technology [2015]
No. 12), after extensive investigations and studies, the specification preparation team carefully summarized practical experience, and revised the version based on extensive solicitation of opinions.
specification.
The main technical content of this code is. basic regulations, engineering geological survey at the planning stage, engineering geological survey at the pre-feasibility study stage,
Engineering geological survey in the operational research phase, engineering geological survey in the bidding design phase, and engineering geological survey in the detailed construction drawing design phase.
The main technical content of this specification revision is.
- Increased the requirements for environmental protection in survey work.
--Added the requirement of engineering geological analysis and evaluation for the selection of planning schemes.
--Added the task requirements for the reservoir resettlement area and special engineering geological survey in the pre-feasibility study stage.
--Added the evaluation of the stability and impact of the natural slope around the building area in the feasibility study stage and the evaluation of the stability of the mining slope of the yard
Price requirements, as well as the survey content and related regulations of the main auxiliary buildings.
-Deleted the content of the potential risk prediction of the earthquake induced by the reservoir.
- Deleted the requirement to investigate natural concrete admixtures.
- Deleted the relevant content about the survey of the reservoir resettlement area and the special reconstruction project during the bidding design stage.
--Adjusted the relevant content of the regional structural stability research.
- Adjusted the survey content and related regulations of reservoirs and building sites at each survey and design stage.
--Adjusted the regulations on the ratio of exploration reserves of natural building materials.
This specification is managed by the National Energy Administration, put forward by the General Institute of Hydropower and Water Conservancy Planning and Design, and is responsible for daily management.
The Technical Committee of Test Design Standardization is responsible for the interpretation of specific technical content. If you have any comments or suggestions during the implementation process, please send the hydropower and water conservancy planning
Design Institute (Address. No. 2, Kangbei Xiaojie, Liupu, Xicheng District, Beijing, Zip Code. 100120).
Editor-in-chief of this code. China Power Construction Group Kunming Survey, Design and Research Institute Co., Ltd.
Participating unit of this specification. China Power Construction Group Guiyang Survey, Design and Research Institute Co., Ltd.
The main drafters of this specification. Wang Wenyuan, Wang Kunxiao, Wanchun, Chen Li, Song Ping, Zhou Huabing, Li Tianpeng, Yang Yicai
Main reviewers of this code. Wang Huiming, Guo Yihua, Zhou Zhifang, Li Wengang, Mi Ying Zhonggong Hailing, Shanzhi Gang, Wei Shangchao
Ju Guanghong Zhong Huiya Guo Weixiang Zhang Guofu Li Huizhong Wang Huiming Li Changyin Cao Yuanyuan Li Shisheng
Table of contents
1 General...1
2 Terminology...2
3 Basic regulations...4
4 Engineering geological survey in the planning stage...6
4.1 General provisions...6
4.2 Regional Geology and Earthquake...6
4.3 Reservoir...6
4.4 Dam site...7
4.5 Long water diversion line and site...7
4.6 Natural building materials...8
4.7 Survey Report...8
5 Engineering geological survey at the pre-feasibility study stage...9
5.1 General regulations...9
5.2 Regional structural stability...9
5.3 Reservoir...10
5.4 Dam site...11
5.5 Diversion line...13
5.6 Factory site...14
5.7 Flood discharge structures...15
5.8 Natural building materials...15
5.9 Survey Report...16
6 Engineering geological survey at the feasibility study stage...17
6.1 General regulations...17
6.2 Reservoir...17
6.3 Earth-rock dam...21
6.4 Concrete Gravity Dam...22
6.5 Concrete arch dam...25
6.6 Tunnel...26
6.7 Channel...27
6.8 Underground powerhouse system...27
6.9 Ground plant system...29
6.10 Spillway...29
6.11 Navigable buildings...30
6.12 Main temporary and auxiliary buildings...31
6.13 Natural building materials...32
6.14 Survey Report...32
7 Engineering Geological Survey in the Bidding Design Phase...34
7.1 General regulations...34
7.2 Engineering Geology Review...34
7.3 Investigation of Specialized Engineering Geological Problems...34
7.4 Auxiliary building...35
7.5 Natural building materials...35
7.6 Survey Report...36
8 Engineering Geological Survey in the Design Stage of Construction Details...37
8.1 General regulations...37
8.2 Supplementary survey...37
8.3 Construction geology...38
8.4 Achievements...38
Appendix A. Drawings and Attachments of Engineering Geological Survey Report...40
Appendix B Values of Physical and Mechanical Properties of Rock and Soil Mass...41
Appendix C Engineering Geological Classification of Surrounding Rocks...43
Appendix D Classification of Slope Engineering Geology...46
Appendix E Rock mass structure and engineering geological classification of dam foundation rock mass...49
Explanation of terms used in this specification...51
List of Reference Standards...52
Attachment. Article description...53
1 General
1.0.1 In order to unify the geological survey of small and medium-sized hydropower projects, clarify the survey tasks, content, methods and technical requirements of each survey and design stage,
To ensure the quality of surveys, formulate this specification.
1.0.2 This code applies to engineering geological surveys of small and medium-sized hydropower projects.
1.0.3 The geological survey of small and medium-sized hydropower projects shall not only comply with this code, but also comply with the current relevant national standards.
2 term
2.0.1 engineering geological investigation of hydropower project
Engineering geological surveying and mapping, geophysical prospecting, drilling, tunneling, in-situ testing and laboratory for the investigation of the engineering geological conditions of hydropower engineering buildings
Comprehensive investigation and research work such as internal testing and long-term observation.
2.0.2 engineering geological conditions
The general term for engineering-related topography, landforms, stratum lithology, geological structure, hydrogeology, physical geological phenomena and other geological conditions.
2.0.3 engineering geological mapping
Through direct observation on the ground and other auxiliary means, the geological information related to the construction of the project is drawn on the topographic map at a certain scale,
And form the work of technical documents.
2.0.4 engineering geological evaluation
According to the obtained geological data, combined with the specific engineering characteristics, the engineering geological conditions and main engineering geological problems of the building area are analyzed.
Conduct analysis, research and calculations, draw relevant understandings and conclusions, and propose measures for the treatment and prevention of adverse geological phenomena.
2.0.5 Seepage of dam foundation
After the reservoir is impounded, the reservoir water leaks downstream along the river bed and the rock and soil mass of the dam foundations on both banks.
2.0.6 seepagearound the dam
After the reservoir is impounded, the reservoir water leaks downstream along the rock and soil mass outside the two ends of the dam crest.
2.0.7 Potential unstable rock and soil
The status quo is basically stable. In a certain period of time in the future, affected by various effects, rock and soil masses that may become unstable may occur.
2.0.8 Regional tectonic stability
The degree of comprehensive influence of regional geological structure, fault activity, seismic activity and seismic hazard on the stability and safety of the engineering site.
2.0.9 reservoir-induced earthquake
Under the special geological background, due to the impoundment of the reservoir, there are new occurrences in the reservoir and its vicinity, which are related to the local natural seismic activity.
Seismic activity with significantly different motion patterns.
2.0.10 karst reservoir
Karst areas use karst depressions, karst troughs, blind valleys, etc., or reservoirs formed by dams or caves in underground rivers.
2.0.11 Structural discontinuity
Discontinuous interfaces in the rock and soil bodies, such as bedding, faults, joints, and fissures.
2.0.12 Relaxed zone of rock mass
According to the degree of unloading of the rock mass or the depth of development, the rock zones are generally divided into strong unloading zones, weak unloading zones, and deep unloading zones.
2.0.13 surrounding rock mass
Around the underground cavern, the rock mass that has caused stress redistribution due to excavation, or the rock mass that may affect the stability and deformation of the cavern.
2.0.14 argillization interlayer
Affected by structural destruction or physical and chemical effects, its original structure, structure and mineral composition have undergone significant changes, and contain a large amount of mud
The weak interlayer.
2.0.15 engineering geological classification of rock masses
The standards and categories of rock mass engineering geological conditions are classified according to the structural characteristics and physical and mechanical properties of the rock mass.
2.0.16 weak plane
The structural surface whose mechanical strength is significantly lower than the strength of the surrounding rock.
2.0.17 Anti-sliding stability of dam foundation
The ability of the dam foundation rock and soil to resist the shear deformation and destruction of the dam body.
2.0.18 rock burst
Under the conditions of high ground stress, the stress in the surrounding rock of the excavated cavern is suddenly released, causing the dynamic phenomenon of rock bursting and ejection on the wall of the cave.
2.0.19 high pressure water test
An on-site water pressure test to determine the permeability characteristics, permeability stability and opening pressure of structural surfaces of rock masses under high water head. Its highest pressure
The force is 1.2 times or more of the working head of the building.
2.0.20 Earthquake-induced liquefaction
The phenomenon that the saturated non-cohesive soil and low-viscosity particles tend to be compacted by the earthquake, the pore water pressure increases, and the effective stress approaches zero.
2.0.21 Rock mass structure...
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