百良旭升煤矿巷道支护参数优化研究

发布时间：2018-12-17 12:31

【摘要】：以百良旭升煤矿505运输顺槽巷道支护为工程背景,基于现场测试数据,结合有限差分法模拟计算,对巷道原支护设计的相关参数进行了分析评价,在此基础上提出了不同的巷道支护方案,进行不同方案支护参数的比较分析,提出巷道最优支护方案。其主要工作如下:1.论文分析总结了锚杆(索)作用机理及设计理论,并且以自稳隐形拱理论为基础,推导出锚杆(索)支护体系的参数设计公式。2.通过现场监测及数值模拟等方法对505运输顺槽原有支护进行了分析评价,发现在原有支护条件下,围岩变形明显,应力集中现象严重,不能保持围岩稳定性。3.应用自稳隐形拱理论,对原支护方案相关参数进行优化设计,并据工程类比法提出两套对比方案。应用FLAC3D模拟软件对三种方案进行了计算分析,从支护效果的角度确定了最优支护方案,并将优化后方案运用到设计巷道支护中。通过现场监测表明,新的支护体系能够有效提高围岩抵抗变形和破坏能力,有利于发挥巷道围岩的自身承载能力,能够满足工程要求。本文研究的内容和成果,为今后煤矿巷道支护的设计提供重要的参考价值;丰富和发展了锚杆(索)支护设计理论,对锚杆(索)支护设计具有重要的指导意义。
[Abstract]:Based on the field test data and the finite difference simulation calculation, the related parameters of the original support design of the roadway are analyzed and evaluated based on the engineering background of the supporting roadway of No. 505 transport in Bailiangxusheng Coal Mine. On the basis of this, different roadway support schemes are put forward, the supporting parameters of different schemes are compared and analyzed, and the optimal support scheme is put forward. Its main work is as follows: 1. This paper analyzes and summarizes the action mechanism and design theory of anchor rod (cable), and based on the theory of self-stable invisible arch, deduces the parameter design formula of bolt (cable) supporting system. 2. By means of field monitoring and numerical simulation, the original support of 505 transportation along the channel is analyzed and evaluated. It is found that under the original support conditions, the surrounding rock deformation is obvious, the stress concentration phenomenon is serious, and the stability of surrounding rock can not be maintained. Based on the theory of self-stable stealthy arch, the related parameters of the original support scheme are optimized, and two sets of contrast schemes are put forward according to the engineering analogy method. The three schemes are calculated and analyzed by using FLAC3D simulation software, and the optimal support scheme is determined from the point of view of supporting effect, and the optimized scheme is applied to the design of roadway support. The field monitoring shows that the new support system can effectively improve the ability of resisting deformation and failure of surrounding rock, which is helpful to give full play to the bearing capacity of surrounding rock of roadway and can meet the requirements of engineering. The contents and achievements of this paper provide important reference value for the design of roadway support in the future, enrich and develop the design theory of bolt (cable) support, and have important guiding significance for the design of bolt (cable) support.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353

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