摘要
为了解决坚硬顶板难垮难落的问题,利用数值模拟软件对水力压裂进行研究。当压裂液沿着预制裂缝注入后,裂缝内部压裂液聚集。当预制裂缝内部的压裂液聚集能量超过岩石的抗剪强度时,裂缝会发生起裂、扩展。对不同注液排量、水平应力差和弹性模量下的起裂效果进行分析,为后续坚硬顶板的切顶卸压提供一定的应用方案。
In order to solve the problem that hard roof is difficult to collapse and fall,this paper uses numerical simulation software to study fracking.When the fracturing fluid is injected along the prefabricated fracture,the fracturing fluid in the fracture gathers.When the accumulated energy of the fracturing fluid in the prefabricated fracture exceeds the shear strength of rock,the fracture starts and expands.The cracking effects under different injection displacement,horizontal stress difference,and elastic modulus are analyzed,providing a certain application plan for the subsequent top cutting and pressure relief of hard roof.
作者
胡斌
崔继明
Hu Bin;Cui Jiming(Shanxi Coking Coal Xishan Coal Electricity Guandi Coal Mine,Taiyuan Shanxi 030000,China)
出处
《山西冶金》
CAS
2024年第2期113-114,117,共3页
Shanxi Metallurgy
关键词
水力压裂
数值模拟
水平应力差
弹性模量
注液排量
hydraulic fracturing
numerical simulation
horizontal stress difference
elastic modulus
injection displacement
