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NB/T 11526-2024General technical conditions for coal mine micro-seismic monitoring system (English PDF)

煤矿微震监测系统通用技术条件

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Issued by

NEA

Level / Type

Industry · Recommended

Issue date

May 24, 2024

Implementation date

November 24, 2024

Scope

NB/T 11526-2024 is the English-translated version of 煤矿微震监测系统通用技术条件.

NB/T 11526-2024 sets the general technical conditions for microseismic monitoring systems in coal mines, the systems that record microseismic signals and analyse microseismic events.

It covers product classification, technical requirements, test methods and inspection rules, and defines quantities such as the microseismic energy time series, energy per unit time and the number of events per unit time.

The tests include electrostatic discharge, radiated field, fast transient and surge immunity and the coal mine monitoring system performance methods of MT/T 772-1998.

An informative annex recommends a test model for location error, with sensor coordinates and theoretical source coordinates as examples. It applies to the design and inspection of these systems. Issued on 24 May 2024, it has applied since 24 November 2024.

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Document preview — NB/T 11526-2024

National Standard of the People's Republic of China

ICS: 73.100.99
Classification: D 98

Issued by: National Energy Administration of the People's Republic of China

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Product Categories
5 Technical Requirements
6 Test methods
7 Inspection Rules
Appendix A (Informative) Recommended test model for positioning error, sensor configuration coordinates and examples of theoretical coordinates of earthquake sources Reference

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.

1 Scope

This document specifies the product classification, technical requirements, test methods and inspection rules for coal mine microseismic monitoring systems.

This document applies to the design and inspection of coal mine microseismic monitoring systems (hereinafter referred to as the system).

2 Normative references

The contents of the following documents constitute 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.

GB/T 2887 General Specification for Computer Sites

GB/T 3836 (all parts) Explosive atmospheres

GB/T 10111 Generation of random numbers and their application in product quality sampling inspection

GB/T 17626.2-2018 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test

GB/T 17626.3-2023 Electromagnetic compatibility test and measurement technology Part 3: Radio frequency electromagnetic field radiation immunity test

GB/T 17626.4-2018 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test

GB/T 17626.5-2019 Electromagnetic compatibility test and measurement technology surge (impact) immunity test

MT/T 286 Coal mine communication and automation product model compilation method and management method

MT/T 772-1998 Main performance test methods of coal mine monitoring system

MT/T 899-2000 Information transmission device for coal mines

MT/T 1004-2006 General technical requirements for coal mine production safety monitoring system

3 Terms and definitions

The terms and definitions defined in MT/T 1004-2006, MT/T 899-2000 and the following apply to this document.

3.1 Coal mine microseismic monitoring system

A system mainly used to monitor microseismic signals and realize microseismic event analysis and other functions.

3.2 Microseismic energy time series

A series of microseismic energy data points recorded over time and indexed in chronological order.

3.3 Energy release rate

3.4 Microseismic event frequency

The number of microearthquakes per unit time.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 18 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 3836 · MT/T 772-1998 · MT/T 899-2000

Similar standards

NB/T 11529-2024|NB/T 11458-2023|NB/T 11633-2024|NB/T 11646-2024|GB 50581-2020|GB/T 42558.6-2026

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