WEN Hu CHENG Bin ZHAI Xiao-wei YANG Hong-ge LIU Shao-nan
School of Energy Engineering, Xi'an University of Science and Technology Key Laboratory of Westerm Mine
Exploitation and Hazard Prevention Ministry of Education Baoji Beimafang Coal Industry Group Co.，Ltd.

为解决保利合盛煤业公司某矿带压开采过程中,面临下组煤层底板奥灰突水的潜在威胁问题,通过对矿井煤层地质条件和水文地质条件的分析,确定选取影响下组煤层底板奥灰突水脆弱性评价的9个因素作为主控因素,应用GIS对主控因素数据进行采集并归入化处理后建立主控因素图层,然后运用层次分析法(AHP)确定各主控因素的权重比例后,对指数进行频率直方图统计分析,按照相应的阈值将矿井划分成突水安全区、较安全区、过渡区、较脆弱区和脆弱区等5个区域。研究结果表明:在矿区范围内10号、11号煤层底板奥灰突水区域呈西向东由较安全区、过渡区过渡至较脆弱区,局部构造区域为突水脆弱区。

In order to control the hidden danger of spontaneous combustion caused by secondary oxidation of residual coal, air leakage and other issues during the withdrawing period in lower layered coal mining face, take No. 2134 lower layered coal mining face in Beimafang Coal Mine as a study object. The analysis results sho wed that the residual coal heating and oxidation, CO emissions in the goaf of No.2114 higher layered coal mining face, which caused the CO concentration abnormal. T hrough taking comprehensive fire preventing and extinguishing technologies with positive pressure ventilation in the coal mining face, grouting in the goaf of higher laye red coal mining face, grouting polymer gel fire prevention materials through boreholes behind the supports and others, the development of natural oxidation and heating was inhibited, the CO concentration was decreased to 100 x 10- 6and keep stable.