综采工作面端头悬顶水力致裂试验研究  

Experimental Study of Water Fracturing on Face End Hanging Arch of Fully Mechanized Coal Mining Face

作　　者：王慧林 王金国 张大明[3] 洪光[4] WANG Hui-lin;WANG Jin-guo;ZHANG Da-ming;HONG Guang(China Coal Shaanxi Yulin Energy and Chemical Industry,Co.,Ltd.,Yulin 719000,China;Yan＇ an Hecaogou Coal Co.,Ltd.,Yan＇ an 717300,China;Mining School,Liaoning Technical University,Fuxin 123000,China;Fuxin Higher Training College,Fuxin 123000,China)

机构地区：[1]中煤陕西榆林能源化工有限公司,陕西榆林719000 [2]延安市禾草沟煤业有限公司,陕西延安717300 [3]辽宁工程技术大学矿业学院,辽宁阜新123000 [4]阜新高等专科学校,辽宁阜新123000

出　　处：《煤矿开采》2018年第4期97-100,共4页Coal Mining Technology

摘　　要：为了解决禾草沟煤矿综采工作面端头三角区悬顶突然垮落将采空区中的瓦斯挤出造成上隅角瓦斯超限的问题,采用顶板水力致裂方法对50115回风巷开展了试验研究,现场共进行连续50 m的水力致裂试验,水力致裂区间工作面顶板共发生4次周期来压,通过对端头顶板垮落情况进行全程观测,试验段端头顶板垮落及时充分,端头悬顶突然垮落导致挤出积聚瓦斯的问题得到了有效解决。In order to solve the problem of gas transfinite at upper corner,which gas in goaf was extrusion by hanging arch at trigonum of fully mechanized coal mining face collapsed suddenly of Hecaogou coal mine,and then roof water fracturing method was applied at50115 ventilation roadway,the experiment was applied in filed,which length was about 50 m,about four times periodical pressure appeared at working face roof within water fracturing section,according the whole observation of face end collapse,and the face end roof collapse timely and fully at testing section,and gas transfinite problem was solved successfully.

关 键 词：综采工作面 悬顶 水力致裂 周期来压 

分 类 号：TD713.3[矿业工程—矿井通风与安全]