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GB/T 42362-2023: Specification for hazard assessment of groundwater aquifer damage in mine areas
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Specification for hazard assessment of groundwater aquifer damage in mine areas
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GB/T 42362-2023
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Basic data | Standard ID | GB/T 42362-2023 (GB/T42362-2023) | | Description (Translated English) | Specification for hazard assessment of groundwater aquifer damage in mine areas | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D14 | | Classification of International Standard | 07.060 | | Word Count Estimation | 29,273 | | Date of Issue | 2023-03-17 | | Date of Implementation | 2023-07-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 42362-2023: Specification for hazard assessment of groundwater aquifer damage in mine areas---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.
ICS07:060
CCSD14
National Standards of People's Republic of China
Specification for evaluation of damage degree of groundwater aquifer damage in mining areas
Released on 2023-03-17
2023-07-01 implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
table of contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Objectives, principles and requirements 2
4:1 Overall goal 2
4:2 Basic principles 2
4:3 Basic requirements 3
4:4 Workflow 3
5 Influencing factors and damage types 4
6 Hazard manifestations and affected objects 5
6:1 Hazard manifestations 5
6:2 Affected objects 5
7 Evaluation indicators and hazard impact classification 5
7:1 Evaluation Index 5
7:2 Classification of hazard effects6
8 Evaluation data collection 7
8:1 Collection content 7
8:2 Collection requirements 7
8:3 Collection method 8
9 Evaluation Requirements and Methods 8
9:1 Evaluation Requirements 8
9:2 Evaluation method 8
10 overall evaluation 9
11 Expression of Evaluation Results 9
11:1 Outcome Form 9
11:2 Mapping requirements 10
Appendix A (Normative) Basic situation of damage assessment of groundwater aquifer damage in mining areas 11
Appendix B (Normative) Survey of Geological Environment and Ecological Environment in Mining Area 12
Appendix C (Normative) Survey on the degree of damage to groundwater aquifers in mining areas 13
Appendix D (Informative) Calculation of Vegetation Coverage Using Pixel Dichotomy Model Method 15
D:1 Calculation by pixel dichotomy model method 15
D:2 Calculation of Normalized Difference Vegetation Index 15
Appendix E (informative) Method for calculating soil moisture content by weighing method 16
E:1 Weighing method 16
E:2 Tool 16
E:3 Measurement process 16
E:4 Calculation of results16
Appendix F (Normative) Mine Geological Environment Division 17
Appendix G (Normative) The weight coefficient of the assessment index for the degree of damage to groundwater aquifers in mining areas 19
Appendix H (Normative) Format Requirements for Reporting Results of Evaluation Results of Groundwater Aquifer Damage Degree in Mining Area 22
H:1 Outline of the report on the results of the evaluation of the degree of damage to the groundwater aquifer in the mining area 22
H:2 Contents of the report on the damage assessment results of groundwater aquifer damage in mining areas 22
Reference 23
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents"
drafting:
Please note that some content in this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed by the Ministry of Natural Resources of the People's Republic of China:
This document is under the jurisdiction of the National Natural Resources and Land Spatial Planning Standardization Technical Committee (SAC/TC93):
This document was drafted by: China Institute of Geological and Environmental Monitoring, China Academy of Natural Resource Economics, Chang'an University, China Coal Geology Administration
Bureau of Culture and Geology, North China Institute of Science and Technology, Qitaihe City Collapse Monitoring and Prevention Engineering Research Institute:
The main drafters of this document: Sun Wei, Zhang Deqiang, Sun Naiquan, Liang Kai, Hao Chunming, Fang Qing, Ji Wanbin, Zhao Hui, Bai Guangyu, Shen Wenjin,
He Peiyong, Wang Yi, Li Jia, Zhang Jinde, Tian Lei, Ma Dongmei, Pei Shengliang:
Introduction
The exploitation of mineral resources inevitably leads to the lack of layers, structural changes, and permeability changes of groundwater aquifers, especially in sedimentary aquifers:
The performance of the mineral deposit mining area is particularly prominent and typical: The destruction of groundwater aquifers in mining areas is the main mine geological environment problem in mining areas, which can lead to
The decline of regional groundwater levels or even the depletion of groundwater resources will increase the risk of groundwater pollution and affect industrial, agricultural, domestic, and ecological water supplies:
It can cause ecological degradation or damage, and can also cause underground water inrush disasters, threatening the mining safety of mineral resources: Destruction of groundwater aquifers in mining areas
The harm to the groundwater environment and the ecological environment is concealed and delayed, and the impact is regional and irreversible: Therefore, for
In order to accurately classify the damage types of groundwater aquifers in mining areas, clarify the characteristics of hazards and objects affected by hazards, standardize the work process and evaluation methods, scientific
Scientifically judge the degree of damage to groundwater aquifers in mining areas, which is important for the protection of groundwater resources and ecological environment in mining areas, the prevention and control of geological disasters in mines, and the protection of green water resources:
Provide technical support for mine construction and ecological restoration of mining areas, according to the Mineral Resources Law of the People's Republic of China and the Land Management
Law, "Environmental Protection Law of the People's Republic of China", "Regulations on Prevention and Control of Geological Disasters", "Regulations on the Protection of Mine Geological Environment", and refer to relevant national standards
Standard, formulate this document:
Specification for evaluation of damage degree of groundwater aquifer damage in mining areas
1 Scope
This document establishes the objectives, principles, requirements and work procedures for the evaluation of the damage degree of groundwater aquifer damage in mining areas, and specifies the
The types, hazard manifestations and hazard impact objects of the aquifer damage to the sewer aquifer are given, and the evaluation data collection requirements, evaluation index system, and evaluation index system are given:
The collection requirements and content determined the evaluation method, hazard impact classification, comprehensive evaluation, and expression of evaluation results:
This document is applicable to the investigation, monitoring and evaluation of the degree of damage to groundwater aquifers caused by mining of weathered and sedimentary deposits: magma
The investigation, monitoring and evaluation of the hazard degree of aquifer damage caused by the mining of hydrothermal and hydrothermal deposits can be used as a reference:
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document:
GB/T 12719 Hydrogeological Engineering Geological Exploration Specifications for Mining Areas
GB 51070 Code for Design of Coal Mine Water Prevention and Control
DZ/T 0179 Color Standards and Principles for Geological Maps (1∶50000)
DZ/T 0223 Specifications for Preparation of Mine Geological Environment Protection and Restoration Program
DZ/T 0287 Technical Regulations for Mine Geological Environment Monitoring
TD/T 1049 Investigation Procedures for Basic Information of Mine Land Reclamation
3 Terms and Definitions
The following terms and definitions apply to this document:
3:1
aquiferdamage
The mining of mineral resources has resulted in the lack of groundwater aquifer layers, the increase in the thickness of the vadose zone, the dehydration and compaction of the aquifer, and the change of the water storage structure, resulting in
The process or phenomenon in which the water storage, infiltration, and water conduction functions of the aquifer change:
3:2
missing aquifer layers
Open-pit mining of mineral resources results in vadose zone water, gravel pore water overlying the ore bed, and karst, clastic rocks, bedrock fissures, and water-bearing rocks
The formation is partially or completely stripped, changing the groundwater recharge and runoff conditions, resulting in the reduction or loss of the water storage function of the aquifer:
3:3
The dredging and drainage of underground mining of mineral resources causes the effective porosity of the loose rock gravel pore aquifer to decrease, resulting in the permeability of the aquifer:
Decrease, the phenomenon of weakened water supply capacity:
3:4
Underground mining of mineral resources causes dislocation of clastic rocks and bedrock fissure aquifers, roof and floor fractures, and water-conducting fissures, resulting in
The process or phenomenon in which the fracture rate of the water layer changes suddenly and the storage space of groundwater changes:
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