岩体节理内压致裂解析研究

ANALYTICAL STUDY ON FRACTURE OF JOINTED ROCK MASS UNDER INTERNAL PRESSURES

岩体节理内常充满水或软弱填充物,节理受内压荷载扩展破坏是岩土工程界关心的问题。将该问题等效为节理面受一对I型拉力作用的问题,采用节理线附近分析方法,从平衡方程和岩桥材料的破坏准则出发进行求解,得出了节理内压大小与节理扩展长度之间的解析关系。

There is often water or soft in joints of rock masses. It is an important problem in the geotechnical engineering that the internal pressure leads to the fracture of joints. The problem is simplified as one of a joint under I mode internal pressure in the finite rock mass, and solved by the near-joint-line method based on the failure criterion of rock bridge material and equilibrium equations. The relationship between the internal pressure and cracked region length along the joint line is obtained.