大采高综采面运输巷自移式超前支架支护研究

发布时间：2018-03-20 01:37

本文选题：大采高　切入点：工作面运输巷　出处：《西安科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着大采高综采技术对工作面两巷断面尺寸要求越来越大,传统的工作面单体液压支柱超前支护方式已不能适应安全高效综采工作面对超前支护的要求,两巷超前支护已经成为制约大采高工作面安全高效生产的瓶颈之一,特别是运输巷超前支护段大型设备密布,实现机械化超前支护难度很大。因此,研究大采高综采工作面运输巷机械化超前支护技术具有重要的理论意义和应用价值。本论文以红柳林煤矿大采高综采运输巷超前支护为研究对象,采用了计算机数值模拟,理论分析方法和现场试验,结合大采高综采面运输巷道的围岩应力变形特点,分析了围岩变形及应力变化对超前支护的影响,工作面采动应力分布的特征,以及在采动影响运输巷的变形破坏特征。根据理论分析和应用FLAC3D模拟大采高综采面运输巷使用超前支架后围岩破坏与巷道围岩变形位移及应力变化特征,提出了自移式超前液压支架采用交错迈步自移式超前支架的主体结构形式,对主要技术参数进行了分析比较,给出了自移式超前支架工作阻力的确定方法,合理的确定了超前支架的主要技术参数。现场初步试验中安全可靠、推移速度快,试验效果良好。
[Abstract]:With the large mining height fully mechanized coal mining technology demands more and more large cross section size of two roadways, the traditional advance support method of single hydraulic prop in working face can not meet the requirement of safety and high efficiency fully mechanized coal mining work in the face of ahead support. The advance support of two roadways has become one of the bottlenecks restricting the safe and efficient production of the large mining face, especially the large equipment of the advance support section of the transport roadway is densely distributed, so it is very difficult to realize the mechanized advance support. It is of great theoretical significance and practical value to study the mechanized advance support technology of the transportation roadway in the fully mechanized mining face with large mining height. This paper takes the advance support of the transportation roadway of the large mining height in Hongliulin Coal Mine as the research object, and adopts the computer numerical simulation. Based on the theoretical analysis method and field test, combined with the characteristics of surrounding rock stress and deformation of large mining height fully mechanized mining face transportation roadway, the influence of surrounding rock deformation and stress change on advance support and the characteristics of mining stress distribution in working face are analyzed. According to the theoretical analysis and application of FLAC3D to simulate the characteristics of surrounding rock failure and deformation displacement and stress of roadway surrounding rock after the use of leading support in large mining height fully mechanized mining face transportation roadway. The main structure form of staggered self-moving leading support is put forward in this paper. The main technical parameters are analyzed and compared, and the method of determining the working resistance of self-moving leading support is given. The main technical parameters of the lead support are reasonably determined. The field preliminary test is safe and reliable, the speed of moving is fast, and the test effect is good.
【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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