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甘肃省天水市麦积区三岔乡不稳定斜坡、崩塌、泥石流等地质灾害十分发育,灾情、险情严重。本文拟以甘肃省天水市麦积区三岔乡为例,研讨地质灾害在不同工况条件下的稳定状态及形成机制,确定地质灾害的发生概率,评价地质灾害危险性,并预测地质灾害威胁范围。结合地质灾害易发程度分区评价,进行地质灾害危险性分区评价、工程建设适宜区划分,并提出科学有效的地质灾害防治对策。
The geological disasters such as unstable slope, collapse, mudslides and other geological hazards in Maiji District, Tianshui City, Gansu Province, have developed very well. This paper plans to take Sancha Township, Maiji District, Tianshui Municipality, Gansu Province as an example to discuss the steady state and formation mechanism of geological disasters under different working conditions, determine the occurrence probability of geological disasters, evaluate the risk of geological disasters and predict the threat of geological disasters range. Combined with the assessment of the degree of geohazard prone area, the risk of geological disasters zoning evaluation, engineering construction suitable for the division, and put forward scientific and effective geological disaster prevention and control measures.