Study of Sealing Technology of Downward&Permeable Borehole
In gas prediction and prevention , it is important for the Mine-managers to know coal-seam gas-pressure. Because of the limitation of geological conditions,some seam can not use upward bore to measure gas pressure,so using downward bore is essential, but coal-seam gas-pressure measure is difficult on the this condition(QixiangYu. 1992). In order to resolve this problem, the way of “subsection and time-sharing hole sealing is propounded in this paper.by using this method, the crevice water of wall rock is blockaded effec-tively and the influence of measure gas pressure by crevice water is avoided. It can provide guarantee to measure gas pressure under the complicated condition.By the local practice,good effect is achieved.
Hu Zu Xiang
College of Resource and Safety Anhui University of Science and Technology Huainan,china
国际会议
International Mining Forum 2010(2010年国际采矿论坛 IMF 2010)
合肥
英文
1-3
2010-09-20（万方平台首次上网日期，不代表论文的发表时间）