NB/T 11637-2024Standard for management of coal mine gas extraction system (English PDF)

Preface

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.

1 Scope

This document specifies the management requirements for gas extraction pumping stations, pipelines, ancillary equipment, drilling holes, monitoring, and testing.

This document is applicable to coal mines with water ring gas extraction systems.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document. document.

GB/T 15663.8 Coal Mine Scientific and Technological Terminology Part 8: Coal Mine Safety

GB 40881 Design specification for safety assurance system of low-concentration gas pipeline transportation in coal mines

GB 50471 Design standard for coal mine gas extraction projects

AQ 1029-2019 Coal Mine Safety Monitoring System and Detection Instrument Use Management Specification

AQ 1072 Technical requirements for water seal fire and explosion relief devices for gas pipeline transportation

AQ 1073 Technical requirements for automatic explosion-proof devices for gas pipeline transportation

AQ 1079 General technical requirements for automatic powder spraying explosion suppression devices for gas pipeline transportation

NB/T 11168 Technical specification for drilling and hole protection for gas extraction in underground coal mines

3 Terms and definitions

The terms and definitions defined in GB/T 15663.8 and the following apply to this document.

4 Gas extraction pump station management

4.1 The electrical and communication, construction, fire protection, water supply and drainage, and pump room ventilation of the gas extraction pump station shall comply with the provisions of GB 50471.

4.2 The ground gas extraction pump room should not be used as other office space and material warehouse unrelated to gas extraction.

4.3 A management system or operating procedures shall be established for the start-up, shutdown, pump reversal, daily maintenance and overhaul of the gas extraction pump.

4.4 The gas extraction pump in operation should be switched back to a normal state every three months.

4.5 The cooling water circulation system should be equipped with a circulating water pump of sufficient capacity and at least one set of circulating water pump of the same capacity as a backup.

The backup system should be switched on at least once and inspected at least once a month.