摘要
为避免盲目开展压裂造成不必要的安全事故,应用FLAC3D数值模拟方法,分析了寺家庄矿15117回风底抽巷穿层钻孔水力压裂高压水对巷道应力、位移变化的影响,验证了穿层钻孔水力压裂的可压性,开展了井下穿层水力压裂工业试验。抽采效果表明,压裂区抽采单元瓦斯平均抽采浓度和纯量分别是非压裂区的3.1和5.7倍,水力压裂措施的增透效果明显。该方法使施工压裂安全可控以及煤层瓦斯高效抽采。
This paper is an attempt to eliminate unnecessary safety accidents due to blind fracturing.The study does this by using FLAC3D numerical simulation method to analyze the influence of high pressure hydraulic fracturing water on the change of stress and displacement of roadway in 15117 return air bottom extraction roadway through layer in Sijiazhuang mine;by verifying the safety of the hydraulic fracturing through the borehole,and by performing the industrial test of the hydraulic fracturing through the borehole.The results show that the fractured area has 3.1 and 5.7 times respectively the average gas extraction concentration and pure volume of the non fractured area,demonstrating an obvious permeability enhancement effect of hydraulic fracturing measures.This enables the safety and controllability of construction fracturing and efficient gas drainage in coal seam.
作者
姚壮壮
Yao Zhuangzhuang(National Key Laboratory of Gas Disaster Detecting, Preventing & Emergency Controlling, Chongqing 400037, China;Chongqing Research Institute, China Coal Technology & Engireeing Group, Chongqing 400037, China)
出处
《黑龙江科技大学学报》
CAS
2020年第3期255-258,共4页
Journal of Heilongjiang University of Science And Technology
基金
“十三五”国家科技重大专项项目(2016ZX05067004-001)。
关键词
水力压裂
数值模拟
底抽巷
可压性
抽采效果
hydraulic fracturing
numerical simulation
bottom drainage roadway
fracturing feasibility
drainage effect
