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NB/T 11459-2023 English PDF

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US$479.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
NB/T 11459-2023: Specification for DC electrical exploration in underground coal mine
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
NB/T 11459-2023	479	Add to Cart	4 days	Specification for DC electrical exploration in underground coal mine	Valid

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Basic data

Standard ID: NB/T 11459-2023 (NB/T11459-2023)
Description (Translated English): Specification for DC electrical exploration in underground coal mine
Sector / Industry: Energy Industry Standard (Recommended)
Classification of Chinese Standard: D82
Word Count Estimation: 24,238
Date of Issue: 2023-12-28
Date of Implementation: 2024-06-28
Issuing agency(ies): National Energy Administration

NB/T 11459-2023: Specification for DC electrical exploration in underground coal mine

---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.
ICS 75.180.10 CCSD82 Energy Industry Standards of the People's Republic of China Direct current electrical exploration regulations for underground coal mines Released on 2023-12-28 2024-06-28 implementation The National Energy Administration released

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General 1 5 Exploration Design 5 6 Exploration and Construction 6 7 Data Processing 10 8 Data Explanation 11 9 Report Preparation12 10 Report Review 12 11 Traceability/Verification Methods13 Appendix A (Informative) Underground Construction Shift Report Record Form 14 Appendix B (Informative) Outline for Writing a Report on Direct Current Exploration in Coal Mines 15

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. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Coal Industry Association. This document is under the jurisdiction of the Coal Industry Coal Mine Special Equipment Standardization Technical Committee. This document was drafted by. China Coal Technology and Engineering Xi'an Research Institute (Group) Co., Ltd., China University of Mining and Technology, Shaanxi Coalfield Geology Group Co., Ltd. company. The main drafters of this document are. Han Depin, Li Dan, Shi Yading, Liu Shucai, Yue Jianhua, Liu Jiang, Shi Xuefeng, Wu Zhengfei, Leng Shengyou, Jiang Qiping, Xing Xiuju and Wang Xiuchen. Direct current electrical exploration regulations for underground coal mines

1 Scope

This document specifies the application of DC electrical exploration technology in underground coal mines in exploration design, exploration construction, data processing, data interpretation, report preparation, Implementation procedures for report review. This document is applicable to DC depth sounding, DC profiling, DC advance detection, working face electric perspective, high-density Direct current electrical exploration operations in mines, such as direct current electrical exploration.

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 3836.1 Explosive atmospheres Part 1.General requirements for equipment GB/T 3836.4 Explosive atmospheres Part 4.Equipment protected by intrinsic safety type "i" GB/T 14499 Geophysical Exploration Technical Symbols GB/T 15663.1 Coal mining technical terms Part 1.Coal geology and exploration

3 Terms and definitions

The terms and definitions defined in GB/T 15663.1 and the following apply to this document. 3.1 In the tunnel excavation working face of the coal mine, the DC method is used to predict the unexplored areas ahead of the tunnel excavation working face along the tunnel excavation direction. Exploration methods for exposed geological structures. 3.2 Electrodes are arranged along the air intake tunnel, return air tunnel, and cut-off hole of the coal mining face to establish a DC or low-frequency AC electric field in one tunnel and measure the field in another tunnel. The general term for exploration methods that measure and perspectively detect electrical anomalies in coal seams, roofs and floors within the working face. 3.3 In the underground tunnel of the coal mine, multiple electrodes are placed in the same tunnel in a linear and dense arrangement with equal spacing to achieve high-density data of two-dimensional profiles. Direct current electrical exploration method for collection.

4 General

4.1 Basic requirements When conducting DC electrical exploration work in coal mines, the explosion-proof inspection department designated by the state shall review and inspect the explosion-proof certificate. The equipment and instruments specified in GB/T 3836.1 and GB/T 3836.4 shall comply with the requirements of the relevant provisions of the relevant provisions of the relevant provisions of the relevant provisions. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of NB/T 11459-2023_English be delivered?

Answer: Upon your order, we will start to translate NB/T 11459-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of NB/T 11459-2023_English with my colleagues?

Answer: Yes. The purchased PDF of NB/T 11459-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.