黑色岩体边坡破坏的内在机理研究

研究目的:贵广线桂林段沿线由黑色岩层构成的岩体边坡在外界环境作用下,较容易发生失稳破坏,对该铁路的设计运营均会带来不良影响.因此通过对黑色岩体边坡破坏的内在机理进行研究,从而为将来该类型边坡的治理提供理论依据.研究结论:指出黑色岩体边坡产生风化破坏的条件为边坡岩体节理裂隙发育、存在地表水流和一定含量的黄铁矿.研究发现黄铁矿氧化作用产生的酸性水是引起黑色岩体边坡破坏的主要因素,该化学作用可造成岩体内部孔隙空间变大、物质成分溶解流失及岩体结构面颗粒间摩擦力的减弱.通过对黑色岩层边坡破坏的内在机理研究,建议今后对该类边坡的治理应从酸性水产生的根本着手,即采取一些遏制黄铁矿风化氧化及物质成分蚀变方面的工程措施.

Research on Inherent Failure Mechanism of Black Rock Slope

Research purposes: The black rock slope along Guizhou-Guangxi High-speed Railway in Guilin of Guangxi province is easy to be destabilized due to the effect of external environment to produce the negative influence on the railway design and operation.The research was done on the inherent failure mechanism of the black rock to provide the theoretical basis for control of such slope. Research conclusions: From the research it can be seen the conditions of black rock slope to generate weathering failure include...