锚固节理岩体力学效应的模型试验和数值模拟研究

Engineering rock mass is usually a medium with many joints and fissures. Most engineering rock masses are reinforced by rockbolts in order to ensure the safety during construction and operation. However, the reinforcement mechanism of rockbolts for jointed rock masses is yet unclear till now. In this paper, a rock-like material was adopted to manufacture specimens and an artificial crack was generated to simulate rock joint. Uniaxial and biaxial compression tests were conducted on, fractured specimens and fractured specimens with bolts to simulate the effects of rockbolts. The failure process of specimens were investigated. The effects of rockbolts were also numerically simulated by pile elements in FLAC-3D software. It is shown that the results obtained by two methods are well comparable in terms of regularity.