Study of the Risk of Hydraulic Fracturing Technology and the DBFP Technology

摘要：

In order to give full play to hydraulic fracturing of relief the stress of the coal and rock mass, and to avoid to weak the shear strength of coal and rock mass, the FLAC3D software was used to analyze the pore pressure and the stress distribution around the fracture. It was pointed out that the hydraulic fracturing not only relieves the stress but also at the same time generates a high pore pressure and stress concentration, due to the fracturing direction is not controllable, the pore pressure and stress distribution of chaos, and turns into a new security risks. Prior to the hydraulic fracturing technique the controlled blasting technique was used to create ordered fissures or weak side in orientation, then to control the fracturing direction, and form the pumping integration of blasting before drilling and fracturing techniques(DBFP), to achieve the purpose of the overall pressure relief. Combination of case study of a mine, the synergy of temporal and spatial between controlled blasting and hydraulic fracturing and the layout of drillings direct impact the effect of the technology, the analysis results and the actual situation are more consistent.

关键词： controlled blasting hydraulic fracturing DBFP overall relief coal and gas outburst

作者: YANG Wei LIN Baiquan JIA Lili

作者单位: Faculty of Safety Engineering, China University of Mining & Technology, Xuzhou 221008, Jiangsu, Chin College of Literature, Law & Politics, China University of Mining & Technology, Xuzhou 221116, Jiang

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 1354-1359

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）