Title: Test Study on Pressure-relieved Gas Drainage and Extraction from Overlying Coal Seam by Surface Boreholes
Abstract: Based on the theory of pressure-relieved gas drainage and extraction from the overlying long-interval protected seam by surface boreholes,test study was made on the pressure-relieved gas drainage and extraction technology from the overlying long-interval protected seam by surface boreholes in Panyi Coal Mine. The test results showed that while the lower protective seam was extracted,the application of pressure-relieved gas drainage from the overlying long-interval protected seam could effectively reduce the gas content of this seam and improve its effective protective distance and effect. This technology has important guiding and reference significance for the prevention and control of gas outburst and gas drainage from the overlying high-gassy long-interval outburst seam with low gas permeability.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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Cited By Count: 1
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