二氧化碳致裂放顶技术在磁窑沟煤矿13^(#)特厚煤层的应用  

Application of Carbon Dioxide Fracturing and Caving Technology in the 13^(#) Extra Thick Coal Seam of Ciyaogou Coal Mine

作　　者：侯渊 侯青 Hou Yuan;Hou Qing(Shanxi Hequ Jinshen Ciyaogou Coal Industry Co.,Ltd.,Shanxi Xinzhou 036500;Jizhong Energy Co.,Ltd.,Xingdong Mine,Hebei Xingtai 054000)

机构地区：[1]山西河曲晋神磁窑沟煤业有限公司,山西忻州036500 [2]冀中能源股份有限公司邢东矿,河北邢台054000

出　　处：《山东煤炭科技》2023年第4期58-60,共3页Shandong Coal Science and Technology

摘　　要：针对磁窑沟煤矿13^(#)特厚煤层综放工作面初采期间初次来压步距大、采空区悬顶面积大、易发生顶板事故的问题,通过分别应用水压致裂和二氧化碳致裂技术对综放工作面顶板进行强制切顶,对切顶效果进行了对比分析。实践证明二氧化碳致裂技术在特厚煤层综放工作面应用可以有效破坏关键层,使初次来压步距较未采取切顶的综放工作面减小54%,顶板全部垮落距离减小53%,实现正常放煤距离减小47%,使工作面提前进入正常放煤。In view of the problems of large initial weighting step,large suspended roof area in the goaf and easy roof accidents during the initial mining of the 13^(#)extra thick fully mechanized caving face in Ciyaogou Coal Mine,by applying hydraulic fracturing and carbon dioxide fracturing technology to cut the roof of the fully mechanized caving face,the effect of the roof cutting is compared and analyzed.The practice proves that the application of carbon dioxide fracturing technology in the fully mechanized caving face of the extra thick coal seam can effectively destroy the key layer,reduce the initial weighting step by 54%compared with the fully mechanized caving face without roof cutting,reduce the total roof caving distance by 53%,realize the normal coal caving distance by 47%,and make the working face enter the normal coal caving ahead of time.

关 键 词：特厚煤层 综放 二氧化碳 切顶 

分 类 号：TD327.2[矿业工程—矿井建设]