Study on Gas Concentration Distribution Laws and Gas Drainage Method in Mined-out Area

摘要：

Its an important meaning of avoiding or decreasing upper comer gas concentration over safe-limit in working face that in detail study gas enncentration distribution laws and gas drainage methods in mined-out area. In this paper, gas concentration distribution laws of minad-out area were tested and analyzed by two kinds of ways of testing in mined-out area: burying pipe and numerical value simulating. Three kinds of mined-out area gas drainage methods were put forward. Based on the mined-out area gas concentration distribution laws of test working face and the advantages and disadvantages of three kind mined-out area gas drainage methods, the gas drainage method of burying magnesite pipe in mined-out area was selected and tested in the test working face. The test results indicate that the method of burying pipe drainage mined-out area gas can greatly decrease working face gas emission quantity, the effect of processing upper corner gas accumulation is very obvious; the weight of magnesite pipe is light and its price is low, the installation is simple and convenient, and the engineering quantity is small.

关键词： mined-out area gas concentration distribution law drainage method

作者: SA Zhanyou LI Feng WANG Chunyuan

作者单位: Department of Safety Engineering,Qingdao Technological University,Qingdao 266520,Shandong,China

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 1456-1459

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）