【作者】 樊克恭；

【导师】 蒋金泉；

【作者基本信息】 山东科技大学 ， 采矿工程， 2003， 博士

【摘要】 本文在大量现场实测、理论分析和数值模拟的基础上，对巷道围岩弱结构破坏失稳过程及非均称控制进行了全面、系统的论述。针对地下工程围岩赋存的不均一性和变形破坏的非均衡性，提出了巷道围岩弱结构与弱结构体的概念；从围岩塑性变形区域、松动圈发育形态出发，研究了围岩塑性变形区域、松动圈形态与围岩弱结构类型的关系以及弱结构巷道破坏区域的奇异性。以围岩弱结构体的变形破坏为主线，从复合结构、分叉理论与弱结构效应出发，着重研究了弱结构体破坏对岩性弱结构、几何弱结构与应力弱结构巷道稳定性的影响；从有利于围岩控制出发，提出了不同围岩应力条件下岩性弱结构类型的优选方案；根据不同弱结构巷道围岩变形破坏规律与破坏效应，提出了弱结构体变形破坏的“控制部位”与巷道围岩的“非均称控制”概念，研究了弱结构巷道围岩破坏的主控性，弱结构匹配支护的力学响应与非均称控制机理与控制方法，初步形成了巷道围岩非均称控制的理论体系。更多还原

【Abstract】 This dissertation, based on a lot of on-site observations, theoretical analyses and numerical simulations, discusses the failure and stability-losing processes of weak structure and non-harmonious control of surrounding rocks of roadways all-sidedly and systematically. It puts forward the concepts of weak structure and weak structure body of surrounding rocks of roadways according to the occurrence inhomogeneity and non-equilibrium of deformation failure of rocks surrounding the underground projects. Proceeded from the study of the plasticity deformation area and the shape of fractural zone development in surrounding rocks it studies the relations among the plastic deformation area of surrounding rocks and the shape of fractured zone as well as types of weak structure of roadways, and singularity of failure area in roadways with weak structure. Regarded the deformation failure of weak structure body as the main idea and proceeded from the compound structure, branching theory and weak structure effect, it stresses on the study of the influences of failure of weak structure body on the stability of roadways with weak lithology structure, weak geometry structure and weak stress structure. In favor of control of surrounding rocks, it proposes the optimum alternatives for selecting the weak lithology structure under different stress conditions of surrounding rocks and it puts forward the concepts of "control location" of deformation failure in weak structure body and "non-harmonious control" of surrounding rocks on the basis of deformation failure laws and failure effect in different types of weak structures. The main control nature of failure of surrounding rocks of roadways with weak structure and the mechanical response of weak structure which matches supporting method as well as the mechanism of non-harmonious control and control methods are studies, forming the preliminary theoretical system of non-harmonious control of rocks surrounding the roadways.更多还原