煤岩渗流-蠕变耦合试验研究

岩石在渗流作用下的蠕变为工程的长期稳定带来了诸多不利影响。研制一种可实现围压加载、轴压加载和空隙水压加载的岩石渗流-蠕变耦合试验装置，进行岩石渗流与蠕变的耦合试验，探讨岩石在渗流作用下的蠕变特性。试验得出：在固定水压和围压的情况下，煤岩轴压对试件弹性形变作用随轴压增加而降低；轴向的瞬时变形随轴压增大而增大；渗流量随轴压升高而降低。在轴压和围压固定的情况下，渗流量和蠕变量随水压的增大而增大，渗流对试件蠕变会产生一定的影响，蠕变也影响渗流量。

Experimental Study on Seepage-creep Coupling of Coal Rock

The creep of rock under the action of seepage has brought many adverse effects on the long-term stability of engineering. A kind of rock seepage-creep coupling test device is developed,which can realize confining pressure loading,axial loading and void hydraulic loading. It is used to conduct rock seepage-creep coupling test to discuss the creep properties of rock under the action of seepage. The results showed that: Under the condition of constant hydraulic pressure and confining pres-sure,the influences of axial compression on elastic deformation of specimen decrease with axial compression increasing. The ax-ial instantaneous deformation increases with axial compression increasing. The seepage discharge decreases with the increase of axial compression. Under the condition of constant axial compression and confining pressure,the seepage discharge and creep deformation increase with the hydraulic pressure increasing. The seepage discharge has a certain effect on the creep of speci-men,and the creep can also affect the seepage discharge.