颗粒直径对破碎石灰岩渗透特性影响的试验研究

In the stave rock mass‘s transfusion will initiate like dynamics disasters and so on dam break, coal mine flooding，so the research on the stave rock mass structure’s physical mechanics nature and the transfusion characteristic had the important theory and the practical significance. This article based on the MTS815 rock mechanics servo experiment system of state key laboratory for geomechanics & deep underground engineering of China University of Mining & Technology, through the indoor simulated environment, many group of comprehensive transfusion experiments of selection different particle size‘s limestone had carried on, and studied the non-Darcy transfusion seepage characteristic. The concrete influence tendencies are given between the stave rock mass medium particle size, the seepage velocity and the penetration coefficient: under certain axis presses, with particle diameter’s gradual fill-out, the penetration coefficient increases gradually; the different particle diameter‘s rock has the similar compaction seepage characteristic, with the rock pressure increasing gradually, its thickness reduces gradually, the penetration coefficient changes small gradually.