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TB 10084-2007 PDF in English


TB 10084-2007 (TB10084-2007) PDF English
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TB 10084-2007: PDF in English

TB 10084-2007 UDC INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA P TB 10084-2007 J 722-2007 Code for geology investigation of natural building material of railway engineering ISSUED ON: AUGUST 09, 2007 IMPLEMENTED ON: AUGUST 09, 2007 Issued by: Ministry of Railways of the People's Republic of China Table of Contents  1 General ... 6  2 Terms ... 6  3 Basic regulations ... 8  4 Roadbed fillers ... 10  5 Gravel ballast ... 14  6 Concrete aggregate ... 18  7 Natural stones ... 21  8 Work content of each investigation stage ... 23  9 Investigation data collation and report preparation ... 26  Code for geology investigation of natural building material of railway engineering 1 General 1.0.1 This Code is prepped to implement the relevant national technical and economic policies, unify the technical requirements for engineering geology investigation of railway natural building materials, and ensure the quality of investigation. 1.0.2 This Code is applicable to engineering geology investigation of natural building materials such as new and rebuilt railway roadbed fillers, gravel ballasts, concrete aggregates, stones. 1.0.3 The engineering geology investigation of natural building materials shall, according to the needs of construction projects, focus on site selection and geological mapping, exploration, testing and evaluation of building material quality and reserves, so as to provide a basis for engineering design. 1.0.4 The engineering geology investigation of natural building materials shall conduct in-depth investigation and research, use comprehensive exploration methods according to local conditions and follow the requirements of the investigation stage. The investigation data shall be true and accurate. 1.0.5 The engineering geology investigation of natural building materials shall, according to the requirements of laws and regulations of the state and relevant departments, formulate safety and environmental protection measures to ensure the safety of people and equipment, and protect the natural environment and farmland. 1.0.6 The engineering geology investigation of natural building materials shall, in addition to this Code, also comply with the relevant national laws, regulations and mandatory standards. 2 Terms 2.0.1 natural building material The building material that is collected from natural soil, sand, and stone, and can meet the relevant technical requirements without treatment or with simple treatment such as sieving, washing, chiseling. transport; 2 Hydrogeological and engineering geological conditions are simple. There are no major adverse geological phenomena. They are not subject to floods, radioactivity and harmful substances (gases); 3 Mining of building materials and abandoned ballast sites shall not have a significant impact on the production and life of nearby residents, transportation and the surrounding environment, shall not form new geological disasters or aggravate the deterioration of the surrounding geological environment. 3.0.4 The site of natural building materials shall not be selected in the following areas: 1 Scenic spots, cultural monuments, archaeological areas; 2 Various nature reserves, soil and water conservation prohibited reclamation areas, basic farmland protection areas, water conservation areas; 3 Geological disaster-prone areas and bad geological development areas; 4 Areas with important national, civil and national defense facilities that have special requirements for flood prevention, earthquake prevention and explosion protection. 3.0.5 The exploration of natural building material site shall meet the following requirements: 1 Exploration work shall be carried out on the basis of geological survey- mapping. Geophysical exploration, drilling, excavation, in-situ testing and other comprehensive exploration methods shall be adopted. Actively adopt new technologies and methods; 2 The spacing of exploration points shall be reasonably arranged according to the type of site and the investigation stage; 3 The exploration depth shall expose the target layer or be greater than the expected mining depth. 3.0.6 In the site investigation of natural building materials, it shall, according to the use and technical requirements of building materials, take representative samples in layers for testing. Conduct comprehensive analysis and evaluation of its quality, according to test results and technical requirements of various natural building materials. 3.0.7 The reserves of natural building materials shall, in accordance with the 4.3.2 The raw materials for making grading gravel shall be hard rock or natural pebble. The quality of raw materials for filler of grading gravel or grading sandy gravel shall be evaluated according to relevant provisions of the current “Code for design on subgrade of railway” (TB 10001) and “Sub-ballast on Railway Gravel Ballast Bed” (TB/T 2897). 5 Gravel ballast 5.1 General 5.1.1 The site selection of railway gravel ballast field shall, according to design requirements, geology, mining and transportation conditions, conduct preliminary selection in multiple venues. Perform further investigation, exploration comparison on the initially determined site and finalize the site plan. The investigation content of the temporary ballast field for construction can be implemented with reference to the provisions of this Clause. 5.1.2 The geological mapping of the railway gravel ballast field shall meet the following requirements: 1 Identify the site topography, landform conditions, stratum, lithology characteristics and distribution, thickness of overlay, useless layer and useful layer, thickness of weathered layer; 2 Identify the site geological structure, rock mass joints, fissure development, rock mass integrity, and geological structure control of useful layer distribution; 3 Identify the development of collapses, landslides, debris flows, terrestrial heat, radioactivity, harmful gases at the site as well as the degree of its impact on ballast mining; 4 Identify the extent of surface water and flood impacts in the site on mining; 5 Identify the groundwater development on the site, groundwater level and annual variation, water quantity and water quality characteristics, main aquifer characteristics. Evaluate the impact of groundwater on ballast mining and the possibility of its utilization; 6 Evaluate the possible changes in geological conditions caused by mining and waste dumping, and the possible impact and harm on the production, life and ecological environment of the surrounding residents. 5.1.3 The mining range of the railway gravel ballast field shall be determined according to the design demand and geological survey-mapping results. The exploration section or representative geological section shall be arranged 5.3.1 The material of railway gravel ballast shall be evaluated according to the current “Railway ballast” (TB 2140) and “Temporary technical conditions of 350km/h passenger special line ballast”. 5.3.2 The calculation of the reserves of large-scale railway gravel ballast fields shall comply with the relevant national regulations. The requirements for reserves evaluation shall meet the accuracy of reserves or basic reserves specified in “General requirements for solid mineral exploration” (GB/T 13908- 2002). 5.3.3 The reserves and overburden ratio of the railway gravel ballast field shall meet the requirements of the current "Railway Quarry Management Rules" issued by the Ministry of Railways. 6 Concrete aggregate 6.1 General 6.1.1 The geological survey-mapping of coarse and fine aggregate sites for concrete use shall comply with the following provisions: 1 Identify the terrain and geomorphic conditions of the site and divide the geomorphic units. Identify the impact of surface water and flooding on the mining site; 2 Identify the lithology characteristics and distribution of strata, the lithology, distribution and thickness of useful and useless layers, the distribution of interlayer or lens; 3 Identify the hydrogeological conditions of the site; 4 Identify the development and environmental geological conditions of unfavorable geology around the site; 5 According to the above geological mapping and exploration test results, analyze and evaluate the mining conditions of the site and the impact on the production, life and environment of nearby residents after mining. 6.1.2 The determination of the mining range of coarse and fine aggregate sites for concrete use, the setting of exploration sections, the selection of exploration methods and the workload of exploration, sampling and testing shall be determined according to the results of geological survey-mapping. 6.2 Exploration, sampling and test 6.2.1 The exploration method of the coarse and fine aggregate site for concrete durability design of railway concrete structures promulgated by the Ministry of Railways. 7 Natural stones 7.1 General 7.1.1 The geological survey-mapping of the natural stone site shall meet the following requirements: 1 Identify the topography and landform features of the site, as well as the impact of surface water and flood on the site; 2 Identify the lithology characteristics and distribution of the site, the occurrence of the rock layer, the geological structure, the development of the joint fissures, the degree of weathering and the thickness of the weathered layer; 3 Identify the lithological characteristics, thickness and distribution of the overlay, as well as the contact between the overlay and the underlying bedrock, the slope of the bedrock surface, the development of groundwater or plastic soil near the contact surface. Evaluate the impact on formation stability; 4 Find out the groundwater level and annual change; 5 Identify the geological conditions of the abandoned ballast site and the impact of stone mining and waste dumping on nearby residents and the environment. 7.1.2 According to the results of geological survey-mapping, layout of the exploration, sampling and testing workload. 7.1.3 Determine the mining range based on geological survey-mapping and exploration results, comprehensively evaluate the mining conditions and their impact on the geological environment. 7.2 Exploration, sampling and test 7.2.1 The exploration method of natural stone site shall be mainly excavation or drilling, and if necessary, supplemented by geophysical prospecting. 7.2.2 The exploration points shall be arranged according to the determined mining range and using the geological section method. The spacing of the exploration points shall be determined according to the outcrop of the rock layer, the thickness of the overlay, and the development of the geological structure. 7.3 Quality evaluation 7.3.1 The quality of railway construction stone shall be evaluated in accordance with the current "Code for Construction of Concrete and Masonry for Railway Engineering" (TB 10210) and "Standard for Acceptance of Concrete works in Railway" (TB 10424). 8 Work content of each investigation stage 8.1 On-the-spot investigation 8.1.1 During the pre-feasibility study stage of railway construction, the planned large-scale natural building material site, railway gravel ballast field, scarce or key building material site shall carry out engineering geological investigation at the on-the-spot investigation stage. 8.1.2 The engineering geological investigation of the natural building material site during the on-the-spot investigation stage shall include the following: 1 Extensively collect regional geological data; 2 Investigate the geological conditions near the mining site, the development of landslides, landslides, debris flows and other geological hazards; 3 Investigate the types and distribution of minable construction materials along the railway; distribution and mining of existing building material sites, material quality and reserves; 4 Preliminarily evaluate the mining conditions of the mining site. Estimate the quality and reserves of natural building materials; 5 Proposals for solutions to scarce building materials shall be based on the survey results. 8.1.3 The engineering geological investigation in the on-the-spot investigation stage shall focus on the survey-mapping of geological outcrops. When necessary, a small amount of drilling or geophysical work can be carried out. A small number of samples can be taken for material performance testing. 8.1.4 Geological data to be submitted during the on-the-spot investigation stage include: 1 On-the-spot investigation report or explanation. The content shall include the distribution of the main strata related to building materials along the railway, the development of geological structures, the development of unfavorable geology and special geotechnical materials, the distribution, where the site is located. 3 Mining conditions of the site: 1) Thickness of useful layer, peeling layer and useless interlayer, difficulty of mining and suggestion of mining plan; 2) Geological conditions of waste (quarry stone) dumping site; 3) Impact of mining process on surrounding geological environment and safety assessment; 4) Traffic conditions near the mining site. 8.2.3 In the preliminary investigation stage, exploration and testing work shall be arranged on the basis of geological survey-mapping. The exploration method shall adopt a comprehensive exploration method mainly of drilling and digging, supplemented by necessary geophysical means. 8.2.4 In the preliminary investigation stage, representative rock and soil samples shall be selected for physical and mechanical property tests according to the distribution of strata. Sampling quantity and sampling method shall be implemented in accordance with relevant regulations. 8.2.5 In the preliminary investigation stage, the reserves and quality of natural building materials shall be determined initially. The determined reserves shall meet the projected amount estimated in the feasibility study report. 8.2.6 In the preliminary investigation stage, it shall, according to geological survey-mapping and exploration test results, evaluate the mining conditions and suitability of the site. Make recommendations. Suggest solutions to scarce natural building materials. 8.2.7 The following investigation data shall be submitted during the preliminary investigation stage: 1 Engineering geological investigation report; 2 Site map of natural building materials (draw if necessary); 3 Engineering geological map of large natural building material site (including geological section line and location of exploration point) and representative geological section map; 4 Calculation data of natural building material reserves at each mining site; 5 Exploration, test data and other original survey data. 8.3 Final investigation stage 4 Engineering geological section drawing of natural building material site (scale of 1:50 ~ 1:500), is prepared, compiling with engineering geological drawing of natural building material site. 5 Borehole histograms, pit histograms (or displays): each hole or test pit is compiled one by one; 6 Other test and indoor test materials are numbered according to sites and aggregated into volumes. 9.1.2 The site map of natural building materials shall include the following: 1 Route location, key project distribution, main roads and village locations; 2 Names and locations of various natural building material sites. 9.1.3 The list of natural building material sites shall include the site number, name, material type, investigation stage, stripping volume, useful layer storage and quality, traffic conditions, and suitability evaluation of various building material sites. 9.1.4 The engineering geological map of the natural building material site shall include the following: 1 Stratigraphic and lithological boundaries, stratigraphic symbols, stratigraphic occurrence, fault occurrence and main joint occurrence, seismic motion parameter zoning line, stratum column schematic diagram (schematically plot the main stratum thickness and groundwater depth); 2 Natural building material site boundaries (or reserve calculation boundaries); 3 Location and number of geological section lines, location and number of exploration test points; 4 Quality zoning boundaries of natural building materials based on material level, ratio of useful layer to useless layer, mining conditions. 9.1.5 The engineering geological section of the natural building material site shall include the following: 1 Number of exploration site, elevation of orifice and bottom of hole, elevation (or depth) of stratum boundary; 2 Lithological boundaries of strata and the boundary of weathered layers at all levels shall focus on drawing the boundary between useful and useless layers; 9.2.1 The reserves of natural building materials shall be calculated and determined according to the mining range, stratum occurrence, and the thickness of useful and unused layers (overlay and interlayer) drawn on the geological section map determined by the geological mapping and exploration results. Calculate the above and below groundwater level separately. 9.2.2 The calculation of the area of the mining area can be carried out by field measurement; or on the geological map of 1:500 ~ 1:2000, use the accumulator, geometric figure method, coordinate calculation method. Area measurement shall not be less than twice. When the difference between the two times is not more than 2%, the average value can be taken. 9.2.3 In the calculation of reserves, the thickness of the useful layer can be reduced by 0.4 ~ 0.6m; or can be multiplied by a factor of less than 1 according to the development of the formation and joint fractures, the degree of weathering. For unnecessary layers or harmful interlayers, the thickness can be increased appropriately, or multiplied by a factor greater than 1. 9.2.4 Formation thickness can be calculated by arithmetic average. When the thickness of the formation changes greatly, the average thickness shall be obtained in sections. In the calculation, different thickness values shall be used according to different area calculation methods. For example, when using true area calculation, the thickness of rock layer shall be taken as true thickness. When using the horizontal projection area, the thickness of the rock layer shall be converted into the vertical thickness of the plane. 9.2.5 Reserve calculation shall be based on a calculation method. Choose another method for verification. 9.3 Report preparation 9.3.1 The engineering geological investigation report of natural building materials in the preliminary or final stage shall focus on the engineering geological investigation situation and conclusions of various major natural building material sites. For large-scale natural building material sites or natural building material sites with complex geological conditions, it shall separately prepare engineering geological investigation report. The engineering geological investigation report for natural building material site with simple terrain, simple conditions and small reserves can be briefly described in the form of a list according to the content requirements of Article 9.3.3. 9.3.2 The main contents and conclusions of the engineering geological investigation of natural building materials in the preliminary or final investigation stage shall be included in the "Geology" of the feasibility study report or preliminary design, mainly including the following: 1 Distribution of major natural building material sites along the route; ......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.