煤岩体强度对灌浆压裂裂隙形成规律影响分析

Analysis of influence of strength of coal and rock mass on Formation Law of grouting fracture

利用RFPA-flow仿真软件建立二维模型,通过在强度较低及较高的煤岩体进行灌浆操作,模拟灌浆过程中强度变化下产生的裂隙直至模型失去稳定性的全部发展过程,根据仿真结果归纳出不同强度的煤岩体进行灌浆压裂作业时所产生的裂缝发展规律。

A two-dimensional model was established by using RFPA-flow simulation software, through the grouting operation in low and high strength coal and rock mass, the whole development process,including the development of fracture under the change of strength, and the loss stability of model,was simulated.According to the simulation results,the fracture development law of different strength coal and rock mass during the grouting and fracturing operation was summarized.