高水充填沿空留巷支护优化设计
发布时间：2018-10-10 06:10
【摘要】：本文以云驾岭煤矿12305工作面运输平巷为背景,运用数值模拟、工程监测等方法,研究了高水巷旁充填沿空留巷技术的应用。论文采用理论分析、数值模拟和工程实测的方式,对比分析不同沿空巷道围岩及充填体应力应变发展规律,对沿空留巷以及巷旁充填体在不同采掘阶段的受力变化及变形特点进行分析,得出沿空留巷高水巷旁充填体位置较为合理的方式及充填体受力特点等规律性的认识。通过实验室实验,研究了水灰比为1.8情况下高水材料的初凝时间、强度随养护时间变化的特点及其破坏特征等特性,实验结论可以为高水材料巷旁充填体尺寸参数的选取、下区段巷道支护设计等提供参考。最后通过现场实测,对高水巷旁充填体在工作面回采期间的受力进行实测分析,验证了充填体尺寸参数、巷旁充填体材料配比选择的合理性,结论为下区段工作面回采、巷道支护及沿空留巷提供理论依据。本文研究表明,可将巷道受工作面回采影响分为:一次采动前影响区(测站距工作面60米~10米)、一次采动影响剧烈区(测站距工作面10米~-10米),一次采动后影响区(测站在工作面-10米~-55米处)、留巷稳定区(-55米以远)。
[Abstract]:Based on the transportation roadway of 12305 working face in Yunjialing Coal Mine, this paper studies the application of filling along gob side roadway in high water roadway by means of numerical simulation and engineering monitoring. In this paper, by means of theoretical analysis, numerical simulation and engineering measurement, the development laws of stress and strain in surrounding rock and backfill of different goaf roadways are compared and analyzed. Based on the analysis of the mechanical changes and deformation characteristics of gob and side filling in different mining stages, it is concluded that the reasonable position of backfill beside high water roadway along goaf and the characteristics of filling force are recognized. Through laboratory experiments, the characteristics of initial setting time, change of strength with curing time and failure characteristics of high water material with water cement ratio of 1.8 are studied. The experimental results can be used to select the size parameters of the filling body beside the roadway of high water material. The design of roadway support in the lower section provides reference. Finally, through the field measurement, the force of the backfill beside the high water roadway during the mining face is measured and analyzed, which verifies the rationality of the parameters of the filling body and the selection of the material ratio of the backfill beside the roadway. The conclusion is that the next section of the working face is recovered. Roadway support and roadway along the gob provide theoretical basis. The present study shows that, The roadway affected by mining face can be divided into: the influence area before the primary mining (60 meters or 10 meters from the measuring station to the working face), the severe area of the mining influence in the first time (10 meters to 10 meters from the working face), and the influence area after the first mining (the station is working in the survey station). Face-10 meters-55 meters), left roadway stability area (-55 meters far).
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353
本文编号：2260930
[Abstract]:Based on the transportation roadway of 12305 working face in Yunjialing Coal Mine, this paper studies the application of filling along gob side roadway in high water roadway by means of numerical simulation and engineering monitoring. In this paper, by means of theoretical analysis, numerical simulation and engineering measurement, the development laws of stress and strain in surrounding rock and backfill of different goaf roadways are compared and analyzed. Based on the analysis of the mechanical changes and deformation characteristics of gob and side filling in different mining stages, it is concluded that the reasonable position of backfill beside high water roadway along goaf and the characteristics of filling force are recognized. Through laboratory experiments, the characteristics of initial setting time, change of strength with curing time and failure characteristics of high water material with water cement ratio of 1.8 are studied. The experimental results can be used to select the size parameters of the filling body beside the roadway of high water material. The design of roadway support in the lower section provides reference. Finally, through the field measurement, the force of the backfill beside the high water roadway during the mining face is measured and analyzed, which verifies the rationality of the parameters of the filling body and the selection of the material ratio of the backfill beside the roadway. The conclusion is that the next section of the working face is recovered. Roadway support and roadway along the gob provide theoretical basis. The present study shows that, The roadway affected by mining face can be divided into: the influence area before the primary mining (60 meters or 10 meters from the measuring station to the working face), the severe area of the mining influence in the first time (10 meters to 10 meters from the working face), and the influence area after the first mining (the station is working in the survey station). Face-10 meters-55 meters), left roadway stability area (-55 meters far).
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353
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