兖州矿区兴隆庄煤矿下组煤底板岩溶水参数计算及突水危险性评价  

Lower Group Coal Seams Floor Karst Water Parameter Computation and Water Bursting Hazard Assessment in Xinglongzhuang Coalmine, Yanzhou Mining Area

作　　者：张圣才[1] 于德亮[1] 李士强[1] 王言剑[2] 乔伟[3,4] 

机构地区：[1]兖州煤业股份有限公司兴隆庄煤矿,山东兖州272102 [2]兖州煤业股份有限公司东滩煤矿,山东邹城273512 [3]中国矿业大学资源与地球科学学院,江苏徐州221116 [4]兖矿集团有限公司博士后工作站,山东邹城273500

出　　处：《中国煤炭地质》2015年第3期35-39,共5页Coal Geology of China

基　　金：国家自然科学基金项目(41302248);中国博士后科学基金项目(2013M531426);江苏高校优势学科建设工程项目;山东博士后创新项目专项资金(201203019)

摘　　要：深部煤层开采存在来自底板的高承压奥灰岩溶水威胁,水头压力高,突水系数大。以兖州矿区兴隆庄煤矿为研究区域,对该矿下组煤第Ⅰ勘探区开展了井下孔组放水多孔观测的大型放水试验工作。基于孔组放水多孔观测试验结果,利用解析法计算了开采煤层底板含水层的水文地质参数;研究了疏水降压能否有效降低奥灰对17煤的突水系数问题。结果表明:在放水孔组区域存在不同方向上的水文地质参数;疏水降压的方式能有效降低放水孔区域奥灰对17煤的突水系数。Floor confined Ordovician limestone karst water has threatened deep part coal seam mining with high head pressure and large water bursting coefficient. Taking the Xinglongzhuang coalmine, Yanzhou mining area as the study region, carried out large-scale underground borehole group outflow test with multiple observation holes in the exploration area I of the coalmine lower group coal seams. Based on the observed results, using the analytic method computed hydrogeological parameters of the mined coal floor aquifer;studied if the draining depressurization can lower down the water bursting coefficient of Ordovician limestone water on coal seam No.17 effectively. The result has shown that different oriented hydrogeological parameters have been existed in the dewatering boreholes region; the draining depressurization mode has been confirmed that it can effectively lower down the water bursting coefficient in dewatering boreholes region.

关 键 词：深部岩溶 孔组放水 水文地质参数 解析解 突水系数 

分 类 号：TD745.22[矿业工程—矿井通风与安全]