GB/T 34547-2017Specification for detection and evaluation of coalbed methane surface drainage effect in coal mine (English PDF)

1 Scope

This standard specifies the terms and definitions of the detection and evaluation of coalbed methane ground pumping effect, the general provisions of the pumping effect detection, pumping

Effect evaluation and report preparation.

This standard applies to coal mine methane extraction and detection of ground effect, the area outside the coal mine methane extraction effect

Measurement and evaluation can refer to use.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 19559 method for determination of CBM content

GB/T 24504 CBM injection/pressure drop well test method

GB/T 29119 Technical specifications for CBM resource exploration

GB/T 31537 CBM (coal mine gas) terms

Well test methods for CBB wells - Drill pipe formation test method

DZ/T 0216 CBM resources/reserves specification

3 Terms and definitions

GB/T 31537 defined and the following terms and definitions apply to this document.

4 general provisions

There is one of the following conditions in the ground extraction area of CBM, and the detection and evaluation of CMM ground extraction effect should be carried out.

a) new coal mine construction, or mine new levels, new mining areas, new face design and development;

b) mine gas drainage project design, or mine original extraction system adjustment;

c) Investigation on extraction effect of CBM ground drainage test area.