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滑坡灾害的发生对社会经济及人民生命财产造成了重大损失,开展孕灾环境敏感性研究具有重要的意义。以滑坡灾害频发区——泸水县为研究对象,选取高程、坡度、坡向、道路、河流、岩土体类型、断裂带及土地利用8个因子,采用确定性系数概率模型分析滑坡易发敏感性,并通过敏感性指数模型分析各个因子对滑坡灾害发生的影响程度,确定有利于滑坡发生的条件,绘制了泸水县区域内滑坡敏感性分区图。结果表明:中等及以上级别的敏感区域内发生的滑坡灾害数量占总数的92.36%,滑坡灾害与孕灾环境敏感性分析具有较好的吻合性;分析结果对泸水县滑坡防治有一定的借鉴作用。
The occurrence of landslide disasters has caused heavy losses to the society, economy and people’s lives and property. It is of great significance to carry out the research on environmental sensitivity of pregnant disaster. Taking Lushui County, a frequent landslide hazard area as the research object, 8 factors including elevation, slope, aspect, road, river, rock and soil type, fault zone and land use were selected to analyze the landslide with the probability coefficient of certainty coefficient Then the sensitivity index model was used to analyze the influence of each factor on the landslide hazard. The conditions that favor landslide occurrence were determined and the zoning map of landslide susceptibility in Lushui County was drawn. The results show that the number of landslide hazards occurred in the middle and above sensitive areas accounted for 92.36% of the total, and the landslide hazards were in good agreement with the sensitivities of the landslide susceptibility analysis. The results of the analysis have certain reference to the landslide prevention and control in Lushui County effect.