破裂岩石力学性态的模拟研究

来源期刊：中南大学学报(自然科学版)1986年第6期

论文作者：钟时猷 徐纪成

文章页码：14 - 20

关键词：破裂岩石； 模拟研究； 三轴压缩试验； 全应力-应变曲线； 力学模型。

Key words：Roeks with fractures； Modelling investigation； Triaxial compression test； Whole stress-strain curve； Mechanical model

摘    要：本文根据三轴压缩模拟试验结果,探讨了围压对破裂状态岩石的残余强度和弹模的影响,岩石处于完整状态与破裂状态时的粘结力和内摩擦角、岩石在不同破裂状态下的弹模变化情况,并提出了一种与模型材料相似的天然岩石处于破裂状态时的力学模型。

Abstract: Rock mass of underground mine engineering has many times suffered disturbance of geological tectonic movement and has become a fractured mass.Therefore,it would be necessary to study the mechanical behaviour of rocks with fractures in order to reflect more truly the intrinsic mechanical behaviour of engineering rock mass.According to the results obtained by triaxial compression modelling tests, this paper discusses the influences of confining pressure on the residual strength and elastic modulus,cohesive force and internal friction angle of rock in intact state and in fractured state,and the change of elastic modulus of rock in different fractured states.Finally,on this basis,a mechanical model of the natural fractured rock which is similar to simulating material is presented.