神东矿区立体帷幕注浆精准堵漏风与高效防灭火技术  

Technology of stereoscopic curtain grouting for accurate air leakage plugging and efficient fire prevention and extinguishing technology in Shendong Mining Area

作　　者：贺兵兵 王青祥[3] 许亚优 于永宁 杨英兵 何铖茂 马驰骋 许超 王江龙 李龙 宋小林[3] HE Bingbing;WANG Qingxiang;XU Yayou;YU Yongning;YANG Yingbing;HE Chengmao;MA Chicheng;XU Chao;WANG Jianglong;LI Long;SONG Xiaolin(Research Center on Mine Ventilation Safety and Occupational Health Protection of National Energy Group,Ordos 017209,China;Shendong Mining Branch,China Shenhua Energy Group Co.,Ltd.,Shenmu 719300,China;China University of Mining and Technology,Xuzhou 221116,China;China Coal Technology and Engineering Group Chongqing Research Institute,Chongqing 400037,China;China Coal Technology and Engineering Group Xi'an Research Institute(Group)Co.,Ltd.,Xi'an 710077,China)

机构地区：[1]国家能源集团矿井通风安全与职业健康防护研究中心,内蒙古鄂尔多斯017209 [2]中国神华能源股份有限公司神东煤炭分公司,陕西神木719300 [3]中国矿业大学,江苏徐州221116 [4]中煤科工集团重庆研究院有限公司,重庆400037 [5]中煤科工西安研究院(集团)有限公司,陕西西安710077

出　　处：《煤矿安全》2024年第9期40-47,共8页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(52104235,52274244);江苏省自然科学基金资助项目(BK20210503);中国博士后科学基金资助项目(2023T160688)。

摘　　要：为高效治理神东矿区浅埋藏煤层开采漏风引起的煤自燃隐患,以大柳塔煤矿活鸡兔井12_上、12_下煤层工作面为研究对象,通过立体帷幕注浆的方式进行精准堵漏风与防灭火工程示范。首先利用地质剖面移动角计算注浆距离,并设计注浆平面布置,同时针对不同地质情况,设计了先导钻孔、注浆钻孔和监测钻孔;根据活鸡兔井实际情况,共施工104个钻孔,设计帷幕体长度约1020 m,高度约40 m;通过分段上行式注浆法,设计工作面切眼外侧注浆高度72 m,12_上205运输巷段注浆高度12 m,注浆宽度15 m,总注浆169569.1 m^(3)。通过立体帷幕注浆,12_下205工作面漏风较同条件下最大减少约1000 m^(3)/min,12_下207工作面漏风较同条件下最大减少近800m^(3)/min;堵漏风效果明显,有效降低12_下煤层工作面煤自燃隐患。To effectively control the hidden danger of coal spontaneous combustion caused by air leakage in shallow buried coal seam in Shendong Mining Area,taking the upper and lower coal seams of Huojitu Well 12 in Daliuta Coal Mine as the research object,the precision air leakage and fire prevention project demonstration was carried out by means of three-dimensional curtain grouting.The scheme calculates the grouting distance and designs the grouting layout using geological profiles to ensure that the grouting body is not affected by mining activities.Different geological conditions are addressed through the design of pilot boreholes,grouting boreholes,and monitoring boreholes.In accordance with the actual conditions of Huojitu Well,a total of 104 boreholes are constructed,with a curtain body length of approximately 1020 m and a height of about 40 m.Utilizing the segmented ascending grouting method,the grouting height is set at 72 m for the working face cutting eye of the Well 12 lower coal seam,and 12 m for the 205 coal transport section of the Well 12 upper coal seam,with a grouting width of 15 m.The total grouting volume is estimated at 169569.1 m^(3).Through the solid curtain grouting,the air leakage of working face 205 in Well 12 lower coal seam is reduced by about 1000 m^(3)/min and that of working face 207 in Well 12 lower coal seam is reduced by nearly 800 m^(3)/min compared with the same conditions;the effect of plugging leakage air is obvious,and the hidden danger of spontaneous combustion of coal in the working face of Well 12 coal seams is effectively reduced.

关 键 词：神东矿区 帷幕注浆 堵漏风 分段上行式注浆法 防灭火 

分 类 号：TD728[矿业工程—矿井通风与安全]