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GB/T 23561.7-2009 English PDF

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US$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 23561.7-2009: Methods for determining the physical and mechanical properties of coal and rock -- Part 7: Methods for determining the uniaxial compressive strength and counting softening coefficient
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23561.7-2009	279	Add to Cart	3 days	Methods for determining the physical and mechanical properties of coal and rock -- Part 7: Methods for determining the uniaxial compressive strength and counting softening coefficient	Valid

Similar standards

GB/T 2007.6 GB/T 2007.7 GB/T 23561.12 GB/T 23561.8 GB/T 23561.1

Basic data

Standard ID: GB/T 23561.7-2009 (GB/T23561.7-2009)
Description (Translated English): Methods for determining the physical and mechanical properties of coal and rock -- Part 7: Methods for determining the uniaxial compressive strength and counting softening coefficient
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D04
Classification of International Standard: 73.010
Word Count Estimation: 12,161
Date of Issue: 2009-04-08
Date of Implementation: 2009-12-01
Regulation (derived from): National Standard Approval Announcement 2009 No.5 (Total No.145)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the terms and definitions of coal and rock uniaxial compressive strength and determination of the softening coefficient calculation involved, instruments and equipment, specimens specifications, experimental procedures and data calculations. This section applies under laboratory conditions, it is possible to calculate the standard specimen processed into coal seams and associated with the uniaxial compressive strength of rock formations and softening coefficient of determination.

GB/T 23561.7-2009: Methods for determining the physical and mechanical properties of coal and rock -- Part 7: Methods for determining the uniaxial compressive strength and counting softening coefficient

---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.
Methods for determining the physical and mechanical properties of coal and rock Part 7. Methods for determining the uniaxial compressive strength and counting softening coefficient ICS 73.010 D04 National Standards of People's Republic of China Physical and mechanical properties of coal and rock Determination Part 7. Determination of uniaxial compressive strength and Softening coefficient calculation method Posted 2009-04-08 2009-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 23561 "Determination of physical and mechanical properties of coal and rock" press release section is divided into 16 parts. --- Part 1. Sampling general provisions; --- Part 2. Determination of true density of coal and rock method; --- Part 3. coal and rock bulk density determination; --- Part 4. coal and rock porosity calculation method; --- Part 5. Determination of water absorption of coal and rock; --- Part 6. Methods for determination of moisture content of coal and rock; --- Part 7. Determination of uniaxial compressive strength and softening coefficient calculation method; --- Part 8. coal and rock deformation parameter determination method; --- Part 9. Coal and triaxial strength and deformation parameters determination method; --- Part 10. Determination of tensile strength of coal and rock; --- Part 11. coal and rock shear test methods; --- Part 12. Coal consistent coefficient of determination; --- Part 13. Determination of the strength of coal and rock point load; --- Part 14. Determination of swelling rock; --- Part 15. Determination of rock swelling stress; --- Part 16. Determination of rock resistant to disintegration index method. This part of GB/T 23561 Part 7. This part of the Annex A, Annex B normative appendix. This section is proposed and managed by the China Coal Industry Association. This section is drafted. Coal Mining Research Institute Research Branch Design and Research Institute of Coal Research Branch detection. The main drafters of this section. Qi Qingxin, Li Jiqing, Maode Bing, Li Hongyan. Physical and mechanical properties of coal and rock Determination Part 7. Determination of uniaxial compressive strength and Softening coefficient calculation method

1 Scope

This section GB/T 23561 specifies the terms and definitions of coal and uniaxial compressive strength and determination of the softening factor involved in the calculations, Equipment, specimen size, test procedures and data calculation. This section applies under laboratory conditions, it can be processed into standard test pieces and coal seams associated with formation of rock uniaxial compressive strength Calculation and determination of softening coefficient.

2 Normative references

The following documents contain provisions which, through reference GB/T 23561 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 23561.3-2009 physical and mechanical properties of coal and rock measuring method - Part 3. coal and rock bulk density determination

3 Terms and Definitions

The following terms and definitions apply to this part of the GB/T 23561 of. 3.1 Under laboratory conditions, coal (or rock) standard specimens under uniaxial compression state bear its failure load bearing surface area ratio. 3.2 Uniaxial compressive strength of coal (or rock) water saturated specimen and dried specimens or natural water content specimen uniaxial compressive strength ratio.

4 Equipment

4.1 Processing Machinery Diamond machine, sawing machine, grindstone or grinding machines. 4.2 inspection tool Specimen test tools are. a) vernier caliper, minimum scale value 0.02mm; b) Universal angle gauge, dial indicator holder and dial indicator; c) the level of detection units. 4.3 Device 4.3.1 Testing Machine Material testing machine accuracy should not be less than one. Load range should satisfy the formula (1). ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 23561.7-2009_English be delivered?

Answer: Upon your order, we will start to translate GB/T 23561.7-2009_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 GB/T 23561.7-2009_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 23561.7-2009_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.