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岩石单裂隙剪切渗流耦合试验可以定性和定量地研究发生在单裂隙上的力学渗流耦合问题。本文应用岩体单裂隙剪切渗流试验机,在恒定法向荷载的边界条件下,对不同状态的岩体单裂隙试件分别进行一系列剪切渗流耦合试验。试验以天然岩石裂隙作为原型,用石膏材料制成试件模拟岩石材料,研究了剪切过程中剪切力和渗流的变化规律,并且分析了裂隙粗糙度、渗透压力以及法向力对剪切渗流耦合的影响。试验结果表明:法向力、渗透压力越大,实验过程中剪切力越大,剪胀作用越明显;裂隙表面粗糙度越大,对剪切渗流耦合特性的影响越明显。
The rock single fracture shear seepage coupling test can qualitatively and quantitatively study the mechanical seepage coupling problem occurring on a single fracture. In this paper, a series of shear seepage coupling tests are carried out on rock single fracture specimens with different states under the constant normal load boundary conditions by using single fracture shear seepage testing machine. In the experiment, the natural rock fracture was taken as the prototype, and the gypsum material was used to simulate the rock material. The variation of shear force and seepage during the shear process was studied. The effects of fracture roughness, osmotic pressure and normal force on shear Influence of seepage coupling. The results show that the larger the normal force and the osmotic pressure, the larger the shear force during the experiment, the more obvious the dilatancy effect is. The larger the roughness of the fracture surface is, the more obvious the influence on the coupling characteristic of shear seepage will be.