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中文摘要：
为解决杨家村矿弱胶结软岩裂隙水影响下煤巷支护难题,综合采用现场调研、室内实验、数值模拟、现场实测研究手段,研究了该巷道围岩水理性质,揭示了巷道围岩变形机制。研究结果表明：1围岩含易吸水粘土矿物,遇水易产生塑性软化变形与体积膨胀;2岩石软化系数约为0.17,属于软化岩石;3随着含水量的增加,岩石试件单轴抗压强度、弹性模量、内摩擦角、抗拉强度、凝聚力等物理力学指标值逐渐降低,但泊松比逐渐增加;4受顶板围岩裂隙水影响,围岩物理力学性质劣化较为显著,岩层层间胶结能力差,围岩承载能力降低,致使顶板变形严重;5直墙半圆拱形巷道与锚网索喷支护技术能有效改善围岩物理力学性质,提高围岩承载能力。现场应用表明：顶板最大下沉量为48mm,最大离层量为22mm,满足了矿井安全高效生产要求。
英文摘要：
Lab experiments, numerical simulation, and situation monitoring are utilized to study the water- physical property and show the deformation mechanism of surrounding rock,so as to solve the difficulty of coal roadway with weakly cemented rock under the influence of crack water. The research results show that the surrounding rock is apt to absorb the water and show the soften deformation and deflation because of clay mineral; the softening coefficient is approximate to0. 17,the rock belongs to softening rock; the physical mechanical properties indexes including uniaxial compressive strength,elasticity modulus, internal friction angle, strength of extension and cohesion are attenuated gradually with increase of water,but the poisson ration is increased; the physical mechanical properties of surrounding rock is deteriorate severely,the rock strata is weakly cemented,and the bearing capacity of surrounding rock is weak because of crack water.The arch wall and hemicycle roadway and blot-net-anchor-spray coupling support can effectively perfect the physical and mechanical characteristics of anchorage zone and enhance the bearing capacity of surrounding rock; the field application shows that max deflection is 48 mm and separation value is 22 mm.
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