National Energy Group Xinjiang Energy Co. , Ltd.
College of Energy and Mining Engineering, Shandong University of Science and Technology
State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology
College of Safety and Environmental Engineering, Shandong University of Science and Technology

为了掌握急倾斜煤层水力压裂造缝规律及作用机理,为现场煤层水力压裂工艺提供技术指导,采用实验室实验的研究方法,以乌东煤矿作为研究对象,以三向应力、煤层层理为实验变量进行了实验室真三轴实验。研究结果表明:水力压裂效果主要取决于克服滤失效应的憋压过程;当层理与最大主应力方向垂直时,随着三向应力的增大,滤失效应减弱,有利于水力压裂;当层理与最大主应力方向平行时,随着三向应力的增大,滤失效应增强,不利于水力压裂。研究结果为急倾斜煤层水力压裂工艺提供了借鉴,完善了矿井水力压裂领域的研究内容。

In order to master the law of fracture making and the action mechanism of hydraulic fracturing in steeply inclined coal seams and provide technical guidance for on-site coal seam hydraulic fracturing technology, using laboratory experiment research methods, the laboratory true triaxial experiment was carried out with Wudong Coal Mine as the research object and three-dimensional stress and bedding of coal seam as the experimental variables. The results show that the effect of hydraulic fracturing mainly depends on the process of pressure holding to overcome the filtration effect. When the bedding is perpendicular to the direction of the maximum principal stress, the filtration effect decreases with the increase of three-dimensional stress, which is conducive to hydraulic fracturing. When the bedding is parallel to the direction of the maximum principal stress, the filtration effect increases with the increase of three-dimensional stress, which is not conducive to hydraulic fracturing. The research results provide a reference for the hydraulic fracturing technology of steeply inclined coal seam and improve the research content in the field of mine hydraulic fracturing.

新疆维吾尔自治区高层次人才天池百人计划项目(2019-39)

王峰超,王恩茂,常博,等. 急倾斜煤层水力压裂造缝规律及机理研究[J]. 矿业安全与环保,2023,50(3):18-22.

WANG Fengchao,WANG Enmao,CHANG Bo,et al. Research on the law and mechanism of hydraulic fracturing in steeply inclined coal seam[J]. Mining Safety & Environmental Protection,2023,50(3):18-22.