强夯与注浆处理煤矸石路基的方法研究
发布时间：2018-07-27 15:16
【摘要】：由于各种原因,本项目需要从矸石山上通过。目前国内对于在煤矸石堆积区域修建高速公路路基的研究极少,煤矸石堆有缓慢自燃的特点,形成路基后其缓慢自燃会导致较大沉降,将直接危害其上的构筑物。经过比较,最终确定采用强夯法来提高路基的承载力以减小沉降,并采用注浆法来消除煤矸石自燃。本文采用室内物理试验、化学成分分析、力学试验等手段对煤矸石的路用性能进行了分析。得出结论:该地区煤矸石经过处治后可以用做路基填料。通过浆液配合比试验得出合理的浆液配合比,并通过检测证实了浆液的灭火效果。通过经验和试夯试验得出强夯参数,并通过试验检测了强夯的加固效果。最后利用ANSYS软件模拟计算煤矸石路基处治后的最终沉降量及路堑边坡稳定性,从沉降稳定分析和边坡稳定分析两方面对煤矸石堆积区公路路基进行了稳定性的评价。研究成果在实际工程中应用效果良好。
[Abstract]:Because of various reasons, this project needs to pass from the gangue mountain. At present, there is very little research on the construction of highway roadbed in the coal gangue accumulation area. The coal gangue pile has the characteristic of slow spontaneous combustion. After the formation of the roadbed, the slow spontaneous combustion will lead to a large settlement, which will directly harm the structure on it. After comparison, the dynamic compaction method is adopted to improve the bearing capacity of roadbed to reduce the settlement, and the grouting method is adopted to eliminate the spontaneous combustion of coal gangue. In this paper, the road performance of coal gangue is analyzed by means of indoor physical test, chemical composition analysis and mechanical test. Conclusion: coal gangue in this area can be used as subgrade filler after treatment. The reasonable mixture ratio of slurry was obtained by slurry mix ratio test, and the fire extinguishing effect of slurry was proved by testing. The parameters of dynamic compaction are obtained by experience and test, and the reinforcement effect of dynamic compaction is tested. Finally, the final settlement of coal gangue roadbed and the stability of cutting slope are calculated by using ANSYS software. The stability of roadbed in coal gangue accumulation area is evaluated from two aspects: settlement stability analysis and slope stability analysis. The research results have been applied well in practical engineering.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.1
本文编号：2148237
[Abstract]:Because of various reasons, this project needs to pass from the gangue mountain. At present, there is very little research on the construction of highway roadbed in the coal gangue accumulation area. The coal gangue pile has the characteristic of slow spontaneous combustion. After the formation of the roadbed, the slow spontaneous combustion will lead to a large settlement, which will directly harm the structure on it. After comparison, the dynamic compaction method is adopted to improve the bearing capacity of roadbed to reduce the settlement, and the grouting method is adopted to eliminate the spontaneous combustion of coal gangue. In this paper, the road performance of coal gangue is analyzed by means of indoor physical test, chemical composition analysis and mechanical test. Conclusion: coal gangue in this area can be used as subgrade filler after treatment. The reasonable mixture ratio of slurry was obtained by slurry mix ratio test, and the fire extinguishing effect of slurry was proved by testing. The parameters of dynamic compaction are obtained by experience and test, and the reinforcement effect of dynamic compaction is tested. Finally, the final settlement of coal gangue roadbed and the stability of cutting slope are calculated by using ANSYS software. The stability of roadbed in coal gangue accumulation area is evaluated from two aspects: settlement stability analysis and slope stability analysis. The research results have been applied well in practical engineering.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.1
【参考文献】
相关期刊论文 前3条
1 刘登攀,田宇;煤矸石填筑路基在城市道路工程中的应用[J];安徽建筑;2002年04期
2 邓岳,李亚娟,奉在为,赵益栋;煤矸石在高速公路建设中利用的环境可行性分析[J];交通环保;2003年05期
3 郭秀岗,刘文华;软土地基煤矸石处理综合技术应用[J];煤;2005年02期
，本文编号：2148237
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