煤岩是典型的层状软岩,在平行原煤节理和垂直原煤节理裂隙面应力作用下,原煤将呈现出不同的渗流规律。采用河南新安煤矿15110工作面的原煤,用酚醛树脂加以包裹,形成方形树脂包裹原煤的透明试件。根据原煤节理情况,选取平行节理方向和垂直节理方向作为试件加载方向,进行应力—渗流耦合作用下原煤渗透特性实验研究,获得应力—渗流耦合作用下原煤的渗流规律。通过实验得出结论:稳定水压条件下随平行节理方向应力的增加,其渗透水流量逐渐增大;透水量随垂直节理方向应力的增大而减少;同时,得到水压与应力耦合作用下原煤的流固耦合方程。
Coal is typical soft layer rock mass,seepage regulations of raw coal under parallel joints stress or vertical joints stress would be different. Raw coal picked from 15110 working face in Xing'an Coal Mine in Henan,was encapsulated by phenolic resin, and formed the square transparent test specimen. According to distribution of joints, parallel joints and vertical joints direction were selected to be loading direction, experiments on raw coal permeability under stress-seepage coupling condition were performed, seepage regulations un- der stress-seepage coupling action were obtained. It indicated that water flow increased with increase of parallel joints stress, however, decrease with increment of vertical joints stress. Meanwhile, fluid-solid coupling equations considering action of water pressure and stress were obtained.