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首页> 外文期刊>Natural hazards and earth system sciences >Characteristics of ground motion and threshold values for colluvium slope displacement induced by heavy rainfall: a case study in northern Taiwan
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Characteristics of ground motion and threshold values for colluvium slope displacement induced by heavy rainfall: a case study in northern Taiwan

机译：强降雨引起的坡面位移的地面运动特征和阈值：以台湾北部为例

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摘要

The Huafan University campus is located in the Ta-lun Shan area in northern Taiwan, which is characterized by a dip slope covered by colluvium soil of various depths. For slope disaster prevention, a monitoring system was constructed that consisted of inclinometers, tiltmeters, crack gages, groundwater level observation wells, settlement and displacement observation marks, rebar strain gages, concrete strain gages, and rain gages. The monitoring data derived from hundreds of settlement and displacement observation marks were analyzed and compared with the displacement recorded by inclinometers. The analysis results revealed that the maximum settlement and displacement were concentrated on the areas around the Hui-Tsui, Zhi-An, and Wu-Ming buildings and coincided with periods of heavy rainfall. The computer program STABL was applied for slope stability analysis and modeling of slope failure. For prevention of slope instability, a drainage system and tieback anchors with additional stability measures were proposed to discharge excess groundwater following rainfall. Finally, threshold value curves of rainfall based on slope displacement were proposed. The curves can be applied for predicting slope stability when typhoons are expected to bring heavy rainfall and should be significant in slope disaster prevention.
机译：华范大学校园位于台湾北部的塔伦山地区，其特征是一个倾角倾斜的斜坡被各种深度的砂层土壤覆盖。为了防止边坡灾害，建立了一个监测系统，该系统由倾斜仪，倾斜仪，裂缝计，地下水位观察井，沉降和位移观察标记，钢筋应变仪，混凝土应变仪和雨量仪组成。分析了来自数百个沉降和位移观测标记的监测数据，并将其与测斜仪记录的位移进行了比较。分析结果表明，最大的沉降和位移集中在惠翠，智安和武鸣建筑周围，并与强降雨时期相吻合。计算机程序STABL用于边坡稳定性分析和边坡破坏建模。为了防止边坡失稳，提出了排水系统和回旋锚以及额外的稳定措施，以在降雨后排放过量的地下水。最后，提出了基于边坡位移的降雨阈值曲线。当台风将带来强降雨时，这些曲线可用于预测边坡稳定性，这对防止边坡灾害具有重要意义。

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