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为研究白龙江流域舟曲—武都地区泥石流沟道斜坡表层板岩在气候因素影响下的劣化进程,实验基于对区域内多处典型泥石流沟斜坡工程地质岩组和气候环境因素监测数据的分析,通过对完成不同次数冻融循环、干湿循环养护后的板岩进行宏观形态的观测,质量变化、弹性波速、应力–应变关系及单轴抗压强度的测试的对比研究,阐述板岩分别在不同环境作用下的劣化响应行为和机制,揭示斜坡表层板岩对干湿环境的劣化响应行为优于冻融环境的规律,表明干湿环境为区域内泥石流沟道斜坡板岩劣化为物源物质的主要环境控制因素,为该地区泥石流灾害的区划评价和防治提供有益的参考。
In order to study the process of the deterioration of surface slate under the influence of climatic factors in the debris flow channel slope of Zhouqu-Wudu area in Bailongjiang River Basin, the experiment was conducted based on the analysis of monitoring data of several typical geological dikes and climatic- Through the comparison of macroscopic observation, mass change, elastic wave velocity, stress-strain relationship and uniaxial compressive strength of the slate after curing and drying under different cycles of freeze-thaw cycles, The degradation response behavior and mechanism under different environments revealed that the response behavior of slope surface slate to wet and dry environment was better than that of freeze-thaw environment, indicating that the wet and dry environment is the source of degradation of slope slate in the debris flow channel The main environmental control factors for the area debris flow disaster zoning and prevention and control provide a useful reference.