GB/T 25217.9-2020 English PDF

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GB/T 25217.9-2020: Methods for test, monitoring and prevention of rock burst - Part 9: Prevention method of water infusion on coal seam
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Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 25217.9-2020	189	Add to Cart	3 days	Methods for test, monitoring and prevention of rock burst - Part 9: Prevention method of water infusion on coal seam	Valid

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GB/T 26127   GB/T 25211   GB/T 25210   GB/T 25217.8   GB/T 25217.14   GB/T 25217.11   

Basic data

Standard ID: GB/T 25217.9-2020 (GB/T25217.9-2020)
Description (Translated English): Methods for test, monitoring and prevention of rock burst - Part 9: Prevention method of water infusion on coal seam
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D20
Classification of International Standard: 73.040
Word Count Estimation: 10,193
Date of Issue: 2020-11-19
Date of Implementation: 2021-06-01
Regulation (derived from): National Standard Announcement No. 26 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 25217.9-2020: Methods for test, monitoring and prevention of rock burst - Part 9: Prevention method of water infusion on coal seam

---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.
Methods for test, monitoring and prevention of rock burst-Part 9.Prevention method of water infusion on coal seam ICS 73.040 D20 National Standards of People's Republic of China Rockburst measurement, monitoring and prevention methods Part 9.Coal seam water injection prevention method 2020-11-19 released 2021-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Table of contents

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Water injection parameters and equipment 2 5 Water injection arrangement and construction method 4 6 Inspection method of coal seam water injection effect 5 Appendix A (Normative Appendix) Main technical parameters and application of steel wire braided high pressure hose for coal seam water injection 7

Foreword

GB/T 25217 "Measurement, Monitoring and Prevention of Rock Burst Pressure" is divided into 14 parts. ---Part 1.The method of measuring the impact tendency of roof rock formation and index; ---Part 2.Classification of impact tendency of coal and measurement method of index; ---Part 3.The method of measuring the impact tendency and index of coal-rock composite specimens; ---Part 4.Microseismic monitoring method; ---Part 5.Ground sound monitoring method; ---Part 6.Drill cuttings monitoring method; ---Part 7.Mining stress monitoring method; ---Part 8.Electromagnetic radiation monitoring methods; ---Part 9.Coal seam water injection prevention methods; ---Part 10.Prevention and treatment methods for coal seam borehole pressure relief; ---Part 11.Coal seam pressure relief blasting prevention method; ---Part 12.Prevention and control methods of mining protective layer; ---Part 13.Prevention methods of roof deep hole blasting; ---Part 14.Prevention and treatment methods of roof hydraulic fracturing. This part is Part 9 of GB/T 25217. This section was drafted in accordance with the rules given in GB/T 1.1-2009. This part is proposed and managed by China Coal Industry Association. Drafting organizations of this section. Henan Dayou Energy Co., Ltd., Coal Science and Technology Research Institute Co., Ltd., Liaoning University of Engineering and Technology, Liaoning University, Shandong University of Science and Technology. The main drafters of this section. Liu Jun, Qi Qingxin, Wei Xiangzhi, Jiang Hongbing, Pan Yishan, Ding Chuanhong, Pan Liyou, Zhang Ningbo, Wang Yaxu, Song Weihua. Rockburst measurement, monitoring and prevention methods Part 9.Coal seam water injection prevention method

1 Scope

This part of GB/T 25217 specifies the terms and definitions, water injection parameters and equipment involved in the method of coal seam water injection to prevent rock bursts. Preparation, water injection layout and construction method, and coal seam water injection effect inspection method. This section is applicable to water injection in coal seams to prevent rock bursts.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 482-2008 Method for taking coal samples from coal seams MT/T 501-1996 Long borehole coal seam water injection method MT/T 1023-2006 Coal seam water injection injectability identification method

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Coal seam water injection Inject water in areas where the coal seam has impact risk, change the physical and mechanical properties such as the impact tendency of the coal seam, and reduce the impact risk method. 3.2 High pressure coal seam water injection The use of high-pressure water injection pumps to inject water into the coal seams that are dangerous for mining, increase the seam cracks in the high-stress area, and release or transfer the coal Layer stress. 3.3 Hydrostatic coal seam water injection Use the hydrostatic pressure in the water supply pipeline to inject water into the coal seam with impact risk, increase the water content of the coal body, reduce or release the coal body stress. 3.4 Original water content of coal seam The ratio of the mass of water in the coal mass to the mass of the dry coal mass before water injection into the coal seam. 3.5 Water content after water injection The ratio of the mass of water in the coal mass to the mass of the dry coal mass after water injection into the coal seam. ......

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