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NB/T 11458-2023Geophone for seismic exploration for coal mine (English PDF)

矿用地震勘探检波器

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Issued by

NEA

Level / Type

Industry · Recommended

Issue date

December 28, 2023

Implementation date

June 28, 2024

Scope

NB/T 11458-2023 is the English-translated version of 矿用地震勘探检波器.

NB/T 11458-2023 specifies the geophones used for seismic exploration in underground coal mines, including moving-coil velocity geophones and piezoelectric acceleration geophones.

It sets product types, technical requirements, test methods, inspection rules, marking, nameplate, packaging, transportation and storage.

The requirements rest on environmental tests for low and high temperature, damp heat, impact and vibration, intrinsic safety for explosive atmospheres, IP enclosure protection, petroleum geophone methods and verification of piezoelectric accelerometers.

It applies to the design, production and quality inspection of portable geophones for mine use. Issued on 28 December 2023, it has applied since 28 June 2024.

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Document preview — NB/T 11458-2023

National Standard of the People's Republic of China

ICS: 73.100.99
Classification: D 82

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

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Product Type
5 Technical Requirements
6 Test methods
7 Inspection Rules
8 Marking, packaging, transportation and storage

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 types, technical requirements, test methods, inspection specifications, and Rules, marking, nameplate, packaging, transportation and storage.

This document applies to the design, production, manufacturing and quality inspection of portable geophones in underground coal mines.

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.

GB/T 191 Pictorial markings for packaging, storage and transportation

GB/T 2423.1 Environmental testing for electric and electronic products Part 2: Test methods Test A. Low temperature

GB/T 2423.2 Environmental testing for electric and electronic products Part 2: Test methods Test B. High temperature

GB/T 2423.4 Environmental testing for electric and electronic products Part 2: Test method Test Db. Cyclic damp heat (12h 12h cycle)

GB/T 2423.5-2019 Environmental testing Part 2: Test method Test Ea and guidance. Impact

GB/T 2423.10-2019 Environmental testing Part 2: Test methods Test Fc. Vibration (sinusoidal)

GB/T 3836.1-2021 Explosive atmospheres Part 1: General requirements for equipment

GB/T 3836.4-2021 Explosive atmospheres Part 4: Equipment protected by intrinsic safety type "i"

GB/T 4208-2017 Enclosure protection degree (IP code)

GB/T 10111-2008 Generation of random numbers and their application in product quality sampling inspection

GB/T 24260-2020 Petroleum seismic geophone

GB/T 24262-2009 Environmental testing and reliability requirements for petroleum geophysical exploration instruments

JJG233-2008 Piezoelectric Accelerometer

AQ1043-2007 Safety signs and labels for mining products

MT210-1990 Basic test methods for electrical and electronic products used in coal mine communication detection and control

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Moving-coil geophone

Moving coil velocity detector moving coil moving-coil geophone A vibration pickup sensor device whose output voltage is proportional to the speed is designed based on the principle that the coil moves in a magnetic field to generate induced electromotive force.

3.2 Piezoelectric acceleration geophone

An acceleration-type vibration pickup sensor device designed using the piezoelectric principle. [Source: GB/T 32654-2016, 3.5, modified]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 23 pages — is available in the English PDF.

Referenced standards

Normative references

JJG233-2008 · AQ1043-2007 · MT210-1990

Similar standards

NB/T 11526-2024|NB/T 11529-2024|GB/T 24260-2020|GB/T 32654-2016|GB 12950-2025|GB/T 33583-2025

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