Methane moving law with long gas extraction holes in goaf

摘要：

In order to grasp the methane moving law in goaf and provide a theoretical data for gas extraction holes, the height of caving and fractured zones in the stope has been calculated according to the experiential formula and gas movement law has been observed by field and laboratory experiment. It also gives gas moving characteristics with different position of extraction holes. And it has the best gas extraction result when the final holes are arranged around 30m above the coal seam and 10-20m away from the tailentry in horizontal direction. Besides, the height of final holes should be adjusted to the overburden strata structure. When final holes are near the tailentry, their height should be controlled in the upper of regular caving zone; when they are close to the center of face, their height should be controlled at the bottom of fracture zones.

关键词： gas in goaf gas movement gas extraction holes position of extraction holes experiment

作者: Yong ZHANG Xibin ZHANG Chunyuan LI Chuanan LIU Zufa WANG

作者单位: Faculty of Resources and Safety Engineering, China University of Ming & Technology, Beijing 100083, China

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 372-380

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）