广西北部湾经济区台风暴雨引发的地质灾害风险评价

Risk assessment on geological disaster caused by typhoon and rainstorm in Beibu gulf economic zone of Guangxi zhuang autonomous region

台风暴雨是诱发广西北部湾经济区地质灾害的重要因素,通过对影响地质灾害发育程度的地层岩性、力学性质、断裂构造、人类工程活动、降雨、坡度、地形起伏度等因素的量化解析,划分地质灾害易发区。统计分析地质灾害专业监测数据,取得诱发地质灾害的有效雨量、临界有效雨量等参数,以此构建地质灾害风险评价模型。经验证,该模型有一定的时效性,可以在北部湾经济区地质灾害预警预报工作中提供一定的基础及应用。同时可以为经济区工程建设提供部分参考。

Typhoon and rainstorm are the important factors in evoking geological disasters in Guangxi Beibu Gulf Economic Zone. Through quantitative analysis on those affecting the development of geological hazards such as formation lithology, mechanical properties, fracture structure, human engineering activities, rainfall, slope, relief of topography, etc. ,geological hazards prone areasare able to be divided and identified. In order to building a risk assessment model of geological disasters, statistical analysis of professional monitoring datas of geological hazards and obtainment of effective rainfall, critical effective rainfall as well as other parameters are necessary. Proven that it has a certain timeliness, the model can help provide certain basic applications in warning and forecasting geological disasters for Beibu Gulf Economic Zone. Meanwhile, it can be applied into the construction of economic zone for reference.