水岩耦合作用软岩巷道蠕变失稳机理及其控制研究

项目名称： 水岩耦合作用软岩巷道蠕变失稳机理及其控制研究

项目编号： No.51204086

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 冶金与矿业学科

项目作者： 李刚

作者单位： 辽宁工程技术大学

项目金额： 25万元

中文摘要： 针对水作用下煤矿软岩巷道围岩控制中的科学问题，围绕水岩耦合作用软岩巷道蠕变变形-失稳机理，通过一系列室内软岩蠕变试验和模型试验，采用多孔介质渗流力学、岩石流变学、地下水动力学、矿山岩体力学、矿山压力与岩层控制等多学科研究方法，揭示水岩耦合作用软岩巷道蠕变失稳机制，弄清含水率、孔隙水压力、浸水时间及围压对软岩蠕变性质的影响，给出水岩耦合作用软岩巷道蠕变控制的关键参数；提出蠕变参数随时间、含水状态动态变化的非线性蠕变模型，并给出模型参数反演识别方法，建立水岩耦合作用软岩巷道围岩变形的蠕变-渗流耦合模型，提出模型的数值计算方法，并将数值模拟结果与实验结果相验证，为软岩工程、尤其是水作用下软岩工程的围岩控制提供理论依据和技术支持。

中文关键词： 软岩巷道；水岩作用；水岩蠕变模型；蠕变控制；

英文摘要： Aiming at the problem of soft rock roadway wall rock control under the action of water, centring on the creep deformation-unstability mechanism of soft rock roadway under the coupled effect of water-rock, with a serious of soft rock creep experiments and model experiments indoor, by using the multi-subject method of porous media poromechanics, rock rheology, groundwater dynamics, mine rock mechanics, mine pressure and ground control, that the soft rock roadway creep-unstability mechanism under the coupled effect of water and rock is uncovered; that the effect to the soft rock creep properties by water ratio, pore water pressure, soaking time and confining pressure is made clear; that the key parameters of soft rock roadway creep control under the coupled effect of water and rock are provided; that the nonlinearity creep model of creep parameters dynamic changing with time and moisture condition is gived out; that the model parameters inversion identification method is given; that the creep-seepage coupled model of soft rock roadway wall rock under the coupled effect of water and rock is established; that the numerical calculation method of the model is pointed out, and the numerical simulation results are checked with the experiment results. This provides theoretical basis and technical support for soft rock eng

英文关键词： soft rock roadway；rock-water interaction；rock-water creep model；creep control；