我国大部分矿区煤层存在“三高三低”的特征，导致瓦斯预抽效果很差，采动卸压瓦斯的抽采是解决我国煤矿瓦斯问题，保证煤矿安全生产的有效方法。采动引起的覆岩破断与卸压瓦斯运移之间的规律已有很多的研究成果，但其二者之间的耦合关系仍需进一步研究，针对这一问题，本文基于能量耗散原理结合物理相似模拟实验手段研究采动覆岩破断与卸压瓦斯运移之间的耦合关系，对进一步完善煤与瓦斯共采理论体系具有重要价值。论文主要研究工作如下： （1）通过分析岩石变形破裂时能量释放、转移及变化特征，得到岩石在全应力应变过程中所经历的5个阶段均伴随着能量的积累与释放，在此基础上，结合弹性力学、塑性力学、Helmholtz自由能理论及Clausius-Duhem不等式等得出基于能量耗散原理的岩石全应力应变损伤力学模型及相似准则。 （2）对比不同材料各自特性，据其确定合理的骨料与胶结剂组合，利用不同组合的材料在保证抗压强度相同的基础上，对所制作的试件进行抗拉强度、脆性参数及渗透性测试，实验结果表明在抗拉强度、脆性参数方面所选材料均能满足模拟岩石的要求，而渗透性方面ACSW-SGC（Amylum淀粉Cement水泥、Sand沙子、Water水、Solid固体、Gas气体、Couple耦合）“固-气”耦合相似材料的渗透速度比原始固相材料试件及PSO（Paraffin石蜡、Sand沙子、Oil油）原始“固-气”耦合材料的渗透速度分别下降了83.17%~95.83%及4.39%~95.83%，平均分别下降了91.61%及68.29%，满足模拟低渗透性岩石的要求，最终确定以沙子作为骨料，水泥及淀粉作为胶结剂。 （3）在确定骨料及胶结剂的基础上，开展相似材料单轴物理力学及渗透性测试实验及三轴渗透性测试实验，对相似材料物理力学及渗透性的影响因素开展了较为全面的测试，得到水泥沙子质量比、淀粉含量与试件抗压强度之间的计算模型，同时也得到水泥沙子质量比、淀粉含量、落锤次数及骨料粒径与渗流速度之间的计算模型，确定制作三维“固-气”耦合物理相似模拟实验模型时各种材料用量及制作工艺的定量关系。 （4）利用自行研发的三维物理相似模拟实验台，开展采动覆岩破断及瓦斯运移物理相似模拟实验研究，得出覆岩下沉量、破断裂隙贯通度、离层裂隙离层率及采动覆岩破断能量释放沿工作面推进方向的分布形态，同时得到采空区横三区的范围及瓦斯运移的基本规律。 （5）分析物理相似模拟的实验结果，结合渗流力学、岩石力学及能量耗散原理等理论，建立了基于能量耗散原理的采动裂隙椭抛带卸压瓦斯渗流-升浮-扩散与能量耗散之间耦合的综合控制模型，通过对模型各参数的分析，得到采动过程中覆岩裂隙破断与瓦斯渗流-升浮-扩散之间的能量耦合机理，为煤与瓦斯共采理论体系提供了理论支撑。 研究揭示了基于能量耗散原理的覆岩破断与瓦斯运移耦合机理，为进一步开展实验室三维“固-气”耦合物理相似模拟提供了理论基础及实验条件，同时为实现煤与瓦斯安全共采提供了一定的理论依据。

The pre-degasification effect is less in China, because most of coal-bed methane existing "three high-low" features. Extracting relief gas is the one of effect methods of ensuring safe production of coalmine and solving problem of coal bed methane in China. Much work has been done in the field of extracting relief gas but coupling relationship with overburden strata breakage and relief gas transportation need to be further researched. Coupling relationship between overburden strata breakage and gas transportation is researched on the theory of energy dissipation and physical simulation experiment. The Research results have important value for further improvement safety and simultaneous extracting of coal and gas. The major research contents are as follows: (1) Energy accumulate and release during five steps of complete stress-strain process has been obtained from analyzing energy characteristics of release，transfer and change during rock deformation and failure. The complete stress-strain damage mechanics model and similar rule has been drawn from theory of elasticity mechanics, plastic mechanics, Helmholtz free energy theory and Clausius-Duhem inequality. (2) Comparing characteristics of different materials to determine different reasonable combinations of aggregate and cement. Tensile strength, brittle parameter, permeability has been tested on the basic on the same compressive strength of different combinations. The experiment results have been shown that similar material is satisfied for simulations rock in respects of tensile strength and brittle parameter. Seepage velocity of ACSW-SGC solid-gas coupling material fell by 83.17%~95.83% and 4.39%~95.83% from the raw material and PSO raw solid-gas coupling material, average 91.61% and 68.29%. Material, sand is aggregate, cement and starch are cement, can be satisfied for simulations low penetration rock. （3）The relationships between cement and sand, amylum content, drop hammer times, aggregate size and compressive strength and seepage velocity have been obtained during the physical mechanics and permeability experimental of uniaxial and permeability experimental of triaxial. The results in above experiment are of helping determine quantitative relation in material dosage and craftsmanship at making three-dimensional physical simulation experimental model. （4）They have been obtained by making three-dimensional physical simulation experiment that are the shapes of distribution of overburden strata settlement, breakage fracture vital links degree, delamination fracture rate and energy release at mining overburden strata breakage with working face advance. Horizon-three-zone and basic law of gas transportation are obtained during above ecperiment. （5）Comprehensive control model of gas seepage-floating-diffusion coupled with energy dissipation，which is based on the energy dissipation principle , was built that is analyzing the result of three-dimensional physical simulation experiment, combining with seepage flow mechanics, rock mechanics and energy dissipation principle. The based on the energy dissipation principle coupling mechanism of overburden strata breakage and gas transportation has been revealed by above results. The mechanism provides theory basis and test condition for further research three-dimensional physical simulation experiment indoor. It is for optimizing achieving degasification system of relieved methane and safety and simultaneous extracting of coal and methane