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NB/T 11536-2024 English PDF

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US$299.00 · In stock
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NB/T 11536-2024: Technical specification for underground grouting and reinforcement retrofitting of floor of mining above confined aquifer in coal mines
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
NB/T 11536-2024	299	Add to Cart	3 days	Technical specification for underground grouting and reinforcement retrofitting of floor of mining above confined aquifer in coal mines	Valid

Basic data

Standard ID: NB/T 11536-2024 (NB/T11536-2024)
Description (Translated English): Technical specification for underground grouting and reinforcement retrofitting of floor of mining above confined aquifer in coal mines
Sector / Industry: Energy Industry Standard (Recommended)
Classification of Chinese Standard: D00
Classification of International Standard: 73.020
Word Count Estimation: 14,140
Date of Issue: 2024-05-24
Date of Implementation: 2024-11-24
Issuing agency(ies): National Energy Administration

NB/T 11536-2024: Technical specification for underground grouting and reinforcement retrofitting of floor of mining above confined aquifer in coal mines

---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 73.020 CCSD00/09 Energy Industry Standards of the People's Republic of China Underground grouting reinforcement and transformation of coal mine floor under pressure mining Technical Specifications Released on 2024-05-24 Implementation on November 24, 2024 The National Energy Administration released

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Grouting reinforcement renovation scheme design 1 4.1 General Provisions 1 4.2 Drilling arrangement principles 2 4.3 Drilling layout design 2 4.4 Drilling structure design 2 4.5 Grouting treatment engineering design 3 5 Drilling and grouting construction 4 5.1 General Provisions 4 5.2 Drilling 4 5.3 Grouting 5 5.4 Sealing 5 6 Effect inspection and project acceptance 6 6.1 Effect test 6 6.2 Completion acceptance 6 6.3 Effect Evaluation 6 Appendix A (Informative) Underground Drilling Single Hole Acceptance Form 7 References 9

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 Safety Standardization Technical Committee. This document was drafted by. Henan Energy Group Co., Ltd., Jiaozuo Coal Industry (Group) Co., Ltd., Jiaozuo Coal Industry (Group) Xinxiang Energy Source Co., Ltd., China University of Mining and Technology (Beijing), and Henan Polytechnic University. The main drafters of this document are. Ma Zhenglan, Yang Heng, Jia Mingkui, Wei Shiyi, Zhao Shehui, Xin Xinping, Li Guodong, Li Zhenhua, Tang Shijie, Zeng Yifan, Kan Xuedong, Liu Shiqi, Mu Songli, Li Xiaolei, Hou Dianchen, Han Jiufang, Zhang Cun, Li Xiaoer, Zhao Kai, Guo Dongyu. Underground grouting reinforcement and transformation of coal mine floor under pressure mining Technical Specifications

1 Scope

This document specifies the design of underground grouting reinforcement and reconstruction scheme for coal mine floor under pressure mining, drilling and grouting construction, effect inspection and engineering inspection. Technical requirements for collection, etc. This document is applicable to underground grouting reinforcement and grouting transformation of the bottom plate of coal mines with pressure mining.

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. NB/T 51030-2015 Specification for construction and acceptance of grouting works in coal mine working faces Detailed Rules for Coal Mine Water Prevention and Control (National Coal Mine Safety Monitoring Bureau)

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Coal mining in an aquifer with confined water pressure. 3.2 The pressure of slurry input into the grouting hole at the end of grouting. 3.3 The minimum safe distance between the controlled range of the outermost water exploration drilling hole and the tunnel wall. 3.4 Final grouting volume final pump volume The flow rate of the grouting pump at the end of grouting.

4 Grouting reinforcement renovation scheme design

4.1 General 4.1.1 When performing underground grouting reinforcement and reconstruction of the floor of a coal mine under pressure mining, the relevant provisions of the "Detailed Rules for Coal Mine Water Prevention and Control" should be implemented. 4.1.2 When the water inrush coefficient of the coal mining face is greater than 0.1 MPa/m, the face should be reinforced by full floor grouting. When the water inrush coefficient is less than or equal to 0.1MPa/m and greater than 0.06MPa/m, the exploration of structural fracture zones and drilling and geophysical anomaly areas should be carried out. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of NB/T 11536-2024_English be delivered?

Answer: Upon your order, we will start to translate NB/T 11536-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of NB/T 11536-2024_English with my colleagues?

Answer: Yes. The purchased PDF of NB/T 11536-2024_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.