Study on Drainage Technology by lO00m Long Roof Boreholes in Strike of High Methane Coal Seam Group
The methane and geology conditions are very complicated and the distance among high gas coal seam. group is short in Shaqu Colliery. In order to solve the difficulties of gas concentration exceeding safety limit at the upper comer and air return of a fully mechanized face, the pouring characteristics at fully mechanized face No.14205 in Shaqu colliery is analyzed in this paper. Ronf stratum movement and fractures above the gob are studied, and then the reasonable layout locations of IO00m long drainage boreholes are decided by use of the numerical simulation method. The practical measurement results showed that the gas control effect of drainage technology by use of long roof boreholes with large diameter and in the coal seam strike was apparent, and a great amount of gas with high concentration was drawn out, and coal and gas were mined safely and efficiently.
short distance high gas contiguous coal seam group gas emission lO00m long great diameter borehole O-shaped circle
XIE Shengrong WEN Baigen HE Fulian ZHANG Shoubao ZHU-Xuesong LI Pengju
College of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing Huajin Coking Coal Co.,Ltd,Lishi 033315,Shanxi,China College of Resources & Safety Engineering,China University of Mining & Technology,Beijing 100083,Chi
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
1501-1505
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）