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TB 10084-2007: Code for geology investigation of natural building material of railway engineering
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...