张集矿蹬空及沿空耦合条件下巷道围岩控制技术研究
发布时间：2018-12-18 04:29
【摘要】：本文是以淮南矿业集团张集煤矿东一13-1(1)采区1122(3)工作面的开采地质条件为基础,综合运用理论分析、数值模拟、工程类比及现场实测等方法,对蹬空及沿空巷道围岩控制技术进行研究。 本论文选用FLAC软件剖析了蹬空及沿空巷道的围岩应力场、塑性区和位移场的转变规律,而且经过对比不同围岩条件下巷道变形特性,提出了相应的锚索网支护设计参数。经过分析沿空侧煤柱的变形特点,提出了补打锚索不等强支护工艺控制部分的较大变形,和选用喷注浆加固工艺加强巷道围岩的力学性能,有效地控制住了沿空侧煤柱的变形。提出了蹬空及沿空巷道矿压观测实施方案,并对蹬空及沿空影响下锚网索支护巷道的表面位移量、深部位移和顶板离层进行监测,得出锚索网支护巷道的矿压显现规律。 本文的研究成果通过了现场工业性试验,并且确保了蹬空及沿空巷道围岩的耦合变形对满足生产的需要,对类似地质条件下的巷道围岩控制具有重要的参考意义,为企业创造明显的经济效益。
[Abstract]:This paper is based on the mining geological conditions of 1122 (3) working face in Zhangji Coal Mine, Huainan Mining Group, and synthetically applies the methods of theoretical analysis, numerical simulation, engineering analogy and field measurement, etc. The surrounding rock control technology of the roadway along and along the gob is studied. In this paper, the stress field, plastic zone and displacement field of the surrounding rock stress field, plastic zone and displacement field of the roadway are analyzed by using FLAC software. By comparing the deformation characteristics of the roadway under different surrounding rock conditions, the corresponding design parameters of bolting and cable mesh support are put forward. Based on the analysis of the deformation characteristics of coal pillar along the gob, the paper puts forward the large deformation of the control part of the unequal strength support technology of supplementary anchor cable, and selects the grouting reinforcement technology to strengthen the mechanical properties of the surrounding rock of the roadway, which effectively controls the deformation of the coal pillar along the goaf side. This paper puts forward the implementing scheme of mine pressure observation in the roadways along and along the gob, and monitors the surface displacement, deep displacement and roof separation of the roadway supported by bolting wire mesh under the influence of pushing and along the goaf, and obtains the law of the rock pressure behavior of the roadway supported by bolting wire mesh. The research result of this paper has passed the field industrial test, and has ensured the coupling deformation of the roadway surrounding rock along the goaf to satisfy the production need, and has important reference significance to the roadway surrounding rock control under the similar geological condition. For the enterprise to create obvious economic benefits.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353
本文编号：2385341
[Abstract]:This paper is based on the mining geological conditions of 1122 (3) working face in Zhangji Coal Mine, Huainan Mining Group, and synthetically applies the methods of theoretical analysis, numerical simulation, engineering analogy and field measurement, etc. The surrounding rock control technology of the roadway along and along the gob is studied. In this paper, the stress field, plastic zone and displacement field of the surrounding rock stress field, plastic zone and displacement field of the roadway are analyzed by using FLAC software. By comparing the deformation characteristics of the roadway under different surrounding rock conditions, the corresponding design parameters of bolting and cable mesh support are put forward. Based on the analysis of the deformation characteristics of coal pillar along the gob, the paper puts forward the large deformation of the control part of the unequal strength support technology of supplementary anchor cable, and selects the grouting reinforcement technology to strengthen the mechanical properties of the surrounding rock of the roadway, which effectively controls the deformation of the coal pillar along the goaf side. This paper puts forward the implementing scheme of mine pressure observation in the roadways along and along the gob, and monitors the surface displacement, deep displacement and roof separation of the roadway supported by bolting wire mesh under the influence of pushing and along the goaf, and obtains the law of the rock pressure behavior of the roadway supported by bolting wire mesh. The research result of this paper has passed the field industrial test, and has ensured the coupling deformation of the roadway surrounding rock along the goaf to satisfy the production need, and has important reference significance to the roadway surrounding rock control under the similar geological condition. For the enterprise to create obvious economic benefits.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353
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