The Effect Evaluation of Removing Outburst through Bedding and Layer-through Boreholes Combined Gas Drainage

Zhong Ming Zhao; Lei Wang; Jian Bang Wu

doi:10.4028/www.scientific.net/AMM.256-259.366

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 256-259The Effect Evaluation of Removing Outburst through...

The Effect Evaluation of Removing Outburst through Bedding and Layer-through Boreholes Combined Gas Drainage

Abstract:

In order to test the validity of regional outburst prevention measures that combined the bedding boreholes and layer-through boreholes in 3104 coalface, according to the relevant provisions, used drilling index, pre-pumping index and gas index to evaluate the effect of removing outburst in 3104 coalface. The evaluation results shown that through the pre-pumping gas, the rate of pre-pumping gas was 53.7%, more than 30%; residual gas content was 2.85～5.07m3/t, less than 8m3/t; residual gas pressure was 0.01～0.02MPa, less than 0.74 MPa. Therefore, the coalface has eliminated the danger of outburst and created favorable conditions for safety mining.

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Periodical:

Applied Mechanics and Materials (Volumes 256-259)

Pages:

366-371

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.256-259.366

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Online since:

December 2012

Authors:

Zhong Ming Zhao*, Lei Wang, Jian Bang Wu

Keywords:

Drilling Indicators, Evaluate, Gas Drainage, Removing Outburst

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