GB/T 39336-2020 English PDF

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GB/T 39336-2020: Technical requirement of roadside bag filling for gob-side entry retaining with high-water material
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39336-2020	209	Add to Cart	3 days	Technical requirement of roadside bag filling for gob-side entry retaining with high-water material	Valid

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Basic data

Standard ID: GB/T 39336-2020 (GB/T39336-2020)
Description (Translated English): Technical requirement of roadside bag filling for gob-side entry retaining with high-water material
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D15
Classification of International Standard: 73.020
Word Count Estimation: 11,159
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 39336-2020: Technical requirement of roadside bag filling for gob-side entry retaining with high-water material

---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.
Technical requirement of roadside bag filling for gob-side entry retaining with high-water material ICS 73.020 D15 National Standards of People's Republic of China Technical requirements for side bag filling of high-water material lanes reserved along goafs 2020-11-19 released 2021-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Table of contents

Preface Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 High water material strength requirements 2 5 Pulp conveying system 2 5.1 General requirements 2 5.2 Pulping system 2 5.3 Slurry conveying system 3 5.4 Cleaning system 3 6 Supporting requirements for filling and retaining lanes beside lanes 3 6.1 In-situ and semi-in-situ lane retention 3 6.2 Roadside support requirements 4 6.3 Requirements for support in lane 7 7 Process and requirements of filling and retaining lane 7 7.1 Process flow 7 7.2 Process requirements 8 8 Filling body strength 8 9 Mine pressure monitoring 8 10 Quality inspection 8

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This standard was proposed and managed by China Coal Industry Association. Drafting organizations of this standard. Jizhong Energy Group Co., Ltd., Jizhong Energy Handan Mining Group Co., Ltd., National Energy Key Laboratory of Coal Technology, Hebei Filling and Mining Technology Co., Ltd., Hebei Coal Research Institute Co., Ltd., and China Coal Industry Association Productivity Promotion Center. The main drafters of this standard. Zhang Dangyu, Sun Chundong, Zhao Yunpei, Gao Huichun, Liu Lianfu, Ma Minle, Wang Chungeng, Lu Zhimin, Zhou Yichao, Liu Shulun, Liang Yijiang, Li Yongyuan, Li Jisheng, Yu Xiaowei, Sun Pengyu, Yang Hongzeng, Song Jia, Li Qiang, Zeng Ruiping, Wang Ying, Wang Xuewei, Hao Yongchao, Yang Yang. Technical requirements for side bag filling of high-water material lanes reserved along goafs

1 Scope

This standard specifies the terms and definitions of the side bag filling technology of high-water material lanes, the strength requirements of high-water materials, the slurry transportation system, Roadside filling and retaining support requirements, filling and retaining process flow and requirements, filling body strength, underground pressure monitoring and quality inspection. This standard is applicable to the mining roadway with coal seam inclination less than 25°, mining height less than 5.0m, and bolt-net support.

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 document. For undated references, the latest version (including all amendments) applies to this document. GB 3836.2 Explosive atmosphere Part 2.Equipment protected by flameproof enclosure "d" GB/T 20105 Air duct coated cloth GB/T 39337 Technical requirements for comprehensive mechanized ultra-high water material bag-filling coal mining HG/T 2580 Determination of tensile strength and elongation at break of rubber or plastic coated fabric JB/T 7043 hydraulic axial piston pump

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 High water material It is composed of two components of material A and material B. When the two components are added with water to form a single component slurry, it will not condense for several hours. Once mixed, it will A hydraulic material that can quickly condense and harden, and the volume of water is less than 90%. 3.2 A material The main material composed of bauxite, limestone and a small amount of sulphoaluminate cement clinker fired from other minerals and suspended dispersant, retarder, etc. The auxiliary materials composed of ingredients are ground to a certain fineness. 3.3 Material B The main material composed of anhydrite and quicklime and the auxiliary material composed of suspended dispersant, coagulant and other ingredients are ground to a certain fineness. 3.4 Filling body Consolidation formed after solidification of high-water material mixed slurry. 3.5 In situ The filling bodies are all located in the goaf, and the original roadway is completely reserved along the edge of the goaf. 3.6 Semi-in-situ A way of filling and retaining lanes by the side of the lane in which the filling body is wholly or partially located in the original lane. ......

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