矿产保护与利用2025，Vol.45Issue(2)：22-28,7.DOI:10.13779/j.cnki.issn1001-0076.2025.08.005
基于微震监测的水力压裂裂隙扩展规律及控制因素研究
Fracture Propagation Law and Controlling Factors of Hydraulic Fracturing Based on Micro Seismic Monitoring
摘要
Abstract
Hydraulic fracturing was the key technology to weaken the hard roof of coal seam and solve the dynamic disasters such as strong underground pressure and large area hanging roof.Accurately understanding the propagation law of hard roof fractures during hydraulic fracturing is of great significance for precise fracturing construction and effect evaluation.Taking the hydraulic fracturing project of a mine in northern Shaanxi as the object,the microseismic monitoring technology was used to monitor the process of fracture expansion in the process of roof fracturing,reveal the law of roof fracture propagation law,evaluate the effect of roof hydraulic fracturing and discuss its influencing factors.The microseismic monitoring results indicate that in the process of hydraulic fracturing of the hard roof of the 4203 working face,the roof cracks dynamically expand on both sides with the progress of fracturing,and the final extension range of cracks on the side of transportation roadway is 26～33 m,and that of the auxiliary transportation roadway is 30～42 m.The verification of the pressure relief drilling show that the fracture range on the side of the auxiliary roadway is up to 42 m,which is basically consistent with the microseismic monitoring results,indicating that the fracture has been extended to the bottom of the pressure relief hole,and the hydraulic fracturing effect is better.In the process of hydraulic fracturing,the expansion range of fracturing fracture is positively correlated with pressure and fracturing time,and the expansion range of fracturing fracture is also related to the goaf.The results provide the groundwork for the extensive use of microseismic monitoring technologies in the coal mining industry and offer a scientific basis for precisely assessing the hydraulic fracturing effect of the hard top plate in the working face.关键词
水力压裂/微震监测/裂隙扩展范围/控制因素Key words
hydraulic fracturing/microseismic monitoring/expansion range of fracture/controlling factors of goaf分类
矿山工程引用本文复制引用
范继超,蒋齐平,王艳波,李文刚,王杰,刘航..基于微震监测的水力压裂裂隙扩展规律及控制因素研究[J].矿产保护与利用,2025,45(2):22-28,7.基金项目
国家重点研发计划课题(2023YFC3008903) （2023YFC3008903）
陕西省自然科学基础研究计划项目(2024JC-YBQN-0361) （2024JC-YBQN-0361）
中煤科工西安研究院(集团)科研项目(2020XAYDC02-04) （集团）
