The Coalbed Methane Content of Ⅱ1 Coal Reservoir and Its Controlling Factors in Liangbei No.2 Coal Mine, Yuzhou Coalfield, Henan Province

摘要：

The investigation on coalbed methane content and its controlling factors is the foundation to discuss the formation mechanism of coalbed methane reservoir and evaluate the producibility of coalbed methane. The Liangbei No.2 coal mine of Yuzhou coalfield is a mine that coal exploration was accomplished just now and prepared to mining. The coalbed methane resource is relatively abundant in the Ⅱ1 coal reservoir of the Lower Permian Shanxi formation, gas in-place is about 0.7×108 m3/km2. Based on the data obtained from coal exploration, the occurrence of coalbed methane content in Ⅱ1 coal reservoir is systematically described and the controlling factors of coalbed methane content is discussed. The investigation indicates: (1) the depth of air altered zone is great, and the occurrence of coalbed methane content is extraordinary hrterogeneous; (2) the open normal faults that formed during Yanshanian Orogeny are the main pathway for coalbed methane to escape; (3) the thickness of overburden strata above Ⅱ1 coal seam is the main factor that controls the regional distribution of coalbed methane. The larger the thickness, the higher the coalbed methane content; (4) in the area where the roof and floor of coal seam are mudstone and siltstone, coalbed methane content is exclusively high; (5) the deep stagnant zone of groundwater is favorable for coalbed methane accumulation.

关键词： Liangbei No.2 coal mine coalbed methane gas content controlling factors

作者: LIN Xiaoying GUO Hongyu CHEN Liangli WANG Ying SU Xianbo

作者单位: Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, Henan Province 454003 Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, Henan Province 454003 Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, Henan Province 454003

会议类型: 国际会议

会议名称: The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)

会议地点: 河南焦作

会议语种:英文

页码: 149-153

在线出版日期: 2007-04-17（万方平台首次上网日期，不代表论文的发表时间）