【作者】 韩松峰；

【导师】 乔卫国；

【作者基本信息】 山东科技大学 ， 岩土工程， 2009， 硕士

【摘要】 随着我国经济的高速发展,国民经济对能源的需求越来越大,我国的矿井建设又掀起一轮新的高潮,因而深井巷道的裂隙岩体在水—岩作用下的损伤问题凸显更加严重,制约工程实践的发展,并对工程建设形成了严重的安全危害。本文在前人相关研究成果的基础上,从物理、化学和力学方面阐述了水—岩作用对裂隙岩体的损伤效应,并考虑介质场、应力场、化学场和温度场等多场耦合效应,动态的演化及逐渐变异和协调的过程。以渗流力学,损伤力学力学为理论依据,在Oda连续介质渗流模型的基础上,综合考虑裂隙岩体的损伤破坏,得出了裂隙岩体的应力—应变—损伤耦合方程。并应用断裂力学分析锚杆加固裂隙尖端裂纹的强度因子,且在分析裂隙岩体锚注加固力学特征的基础上,运用连续介质的弹塑性理论,借鉴前人的研究经验,同时考虑锚杆和注浆因素对节理面力学特性的影响,推导锚注节理的强度公式和锚注节理切向的本构方程。同时分析了深埋巷道衬砌水荷载作用机理,对在未注浆和注浆条件下的应力、应变和位移计算进行比较,得出在水压力作用下的深埋巷道,在允许开挖后一定变形的情况下采取有效的锚注支护后,注浆范围和注浆质量对裂隙围岩的应力应变的影响。最后采用岩土工程常用的FLAC-3D数值模拟软件,对裂隙岩体的锚注加固机理进行分析,研究锚注支护对裂隙岩体稳定性的影响效果。更多还原

【Abstract】 With the rapid development of China’s economy, the national economy to the growing demands for energy. China’s construction of the mine set off a new upsurge, under the water-rock interaction, fractured rock mass in the deep coal highlights the more serious damage, constraining the development of engineering practice, and projects a serious safety hazard.This article related to this article in the previous research, expatiates on the basis of the physical, chemical and mechanical aspects of water-rock interaction on the fractured rock mass effect of the damage, taking into account media field, stress field, the chemical field and temperature field, such as multi-field coupling effect, and the gradual evolution of dynamic variation and co-ordination process. In order to fluid-mechanics, damage-mechanics theory for the mechanics, the continuum percolation model Oda on the basis of comprehensive consideration of the damage in fractured rock, obtains the stress-strain-damage coupled equations on the fractured rock mass. And author analyzed crack tip fracture bolt reinforcement of the intensity factor by the application of fracture mechanics, and analyzed fractured rock mass mechanical characteristics of reinforcement bolt-grouting on the basis of the use of continuum elastic-plastic theory, drawing on previous research experience, taking into bolt and grouting joint surface on the impact of mechanical properties, is derived bolting strength joint formula and bolting joints tangential constitutive equation. At the same time, analysis of the deep roadway lining water-loading mechanism in the absence of grouting and grouting under the conditions of stress, strain and displacement calculation of comparison, the analysis of the scope and grouting of fractured rock mass stress-strain impact, under water pressure in the deep roadway, while allowing a certain deformation after excavation to take effective bolt-grouting,. Finally, commonly used in geotechnical engineering using FLAC-3D numerical simulation software, author analyzed the bolt-grouting of the fractured rock mass analysis of the mechanism of reinforcement to study the anchor-grouting on the stability of fractured rock mass effect.更多还原