岩体移动的相似模拟研究

Study on similar simulation of rock displacement

按照相似模拟理论,根据唐安煤矿井下实际地质条件,制作了大比例巷道三维相似实验模型,对巷道围岩垂直方向位移进行了观测.研究了不同层位上围岩位移随加载压力增大的变化规律,实验表明,随着模型顶部荷载的增加,巷道顶板位移曲线呈盆状沉降,其形态符合高斯函数分布规律,距顶板的距离不同,其盆状曲线形态也不相同,靠近巷道处,盆状沉降明显,而远离巷道顶板则趋于平缓,为此研究了不同层位高斯函数参数A和w的变化规律.该研究对认识巷道变形破坏特征及选择巷道支护方案有一定的理论价值和实际意义.

According to similar simulation and real geology condition of the Tang ＇an coal Mine, the bigger ratiio tri - dimensional simulation model of roadway is made, and the surrounding rock displacement in vertical direction is observed. Meanwhile, the displacement variety rules of surrounding rock in different layer with the loading increasing is studied. Experiment results indicate that the displacement curve of the roadway roof shows like the pan with the top loading increasing. It is considered that the displacement shape of the roadway surrounding rock accords with the Gauss function distribution. With the different distance from the roadway roof, the different shape of curve is shown. The closer the roadway roof, the more obvious the pan subsiding, and the further , the more subdued. The parameter A and w variety of Gauss function in different layer has been studied. It has values of theory and practice in understanding the deformation and destroy characteristic of the roadway, and the supporting schedule selection.