论文部分内容阅读
中国石油西南管道穿越区地质环境条件复杂,地质灾害频发,地质灾害导致的管道事故时有发生。为了实现管道滑坡灾害危险性的定量化评价,以西南地区管道沿线64处典型滑坡为例,通过灾害影响因素分析,初步确定评价指标体系备选指标因子,利用贡献率模型,通过样本统计,分析滑坡灾害影响因子的敏感性大小。按照敏感性大小将影响因子划分为3级:高敏感因子,中等敏感因子,低敏感因子。最终保留中、高影响因子中可以通过野外调查手段获取的坡度、坡面形态、土体类型、历史滑塌、现今变形、土体状态、滑体厚度、降雨、地震烈度等9个因子构建单体管道滑坡灾害危险性评价指标体系。
PetroChina Southwest Pipeline Crossing Geological and environmental conditions are complex, frequent geological disasters, geological disasters caused by pipeline accidents have occurred. In order to quantitatively evaluate the risk of pipeline landslide hazards, taking the 64 typical landslides along the pipelines in southwestern China as an example, preliminary analysis is conducted to determine the factors that affect the reliability of the pipeline landslide. By using the contribution rate model and the sample statistics, Sensitivity of Landslide Impact Factors. According to the sensitivity of the impact factors will be divided into three levels: high sensitive factor, moderate sensitive factor, low sensitive factor. Finally, nine factors including slope, slope morphology, soil type, historical slump, current deformation, soil status, slide thickness, rainfall, and earthquake intensity, which can be obtained through field investigation, are retained in the medium and high impact factors Body Pipe Landslide Hazard Evaluation Index System.