Scholarlink

<p>The Dashui gully Baishulin landslide is a large-scale soil landslide triggered by multiple factors, including earthquakes, rainfall, and human activities, with a complex disaster mechanism. To clarify the basic characteristics of the landslide, assess its stability, analyze the catastrophe dynamic evolution process, and reveal its failure mechanism and future development trend, methods such as detailed field investigations, unmanned-aerial-vehicle (UAV) technology, stability analysis, and numerical simulation were employed. The main conclusions are as follows: the stability coefficients of the landslide body under natural conditions, heavy rainfall, and seismic conditions were 0.947, 0.825, and 0.851, respectively, all indicating an unstable state. Under the most unfavorable conditions, the entire Baishulin landslide body slid within approximately 250&#xa0;s, with the fastest sliding speed occurring at the front edge during the early phase at 43&#xa0;m/s. The maximum deposit thickness was 24.22&#xa0;m, with a deposition area of about 62,000 m<sup>2</sup> and a deposit volume of approximately 1.2 million m<sup>3</sup>, covering much of the Minjiang River at the front edge. In the early stages, the landslide exhibited mechanical deformation characteristics typical of a thrust-type landslide, which transitions to a tractional and retrogressive type landslide post-failure. Under extreme conditions, the landslide may reactivate, leading to large-scale overall instability and forming the landslide-debris flow-river stoppage disaster chain. These findings provide scientific basis for local government emergency evacuation, disaster prevention, and mitigation strategies.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The research on the evolution characteristics of multi-geneses Dashui gully high-locality landslide in the upper reaches of Minjiang river

  • 期刊论文

  • 发表日期：

    2025年6月26日

查看全文
  • Meng Minghui,
  • Ma Hongsheng,
  • Lei Ningfei,
  • Sun Dong,
  • Qin Liang,
  • Li Mingli,
  • Zhang Xu,
  • Mao Wulin

摘要

The Dashui gully Baishulin landslide is a large-scale soil landslide triggered by multiple factors, including earthquakes, rainfall, and human activities, with a complex disaster mechanism. To clarify the basic characteristics of the landslide, assess its stability, analyze the catastrophe dynamic evolution process, and reveal its failure mechanism and future development trend, methods such as detailed field investigations, unmanned-aerial-vehicle (UAV) technology, stability analysis, and numerical simulation were employed. The main conclusions are as follows: the stability coefficients of the landslide body under natural conditions, heavy rainfall, and seismic conditions were 0.947, 0.825, and 0.851, respectively, all indicating an unstable state. Under the most unfavorable conditions, the entire Baishulin landslide body slid within approximately 250 s, with the fastest sliding speed occurring at the front edge during the early phase at 43 m/s. The maximum deposit thickness was 24.22 m, with a deposition area of about 62,000 m2 and a deposit volume of approximately 1.2 million m3, covering much of the Minjiang River at the front edge. In the early stages, the landslide exhibited mechanical deformation characteristics typical of a thrust-type landslide, which transitions to a tractional and retrogressive type landslide post-failure. Under extreme conditions, the landslide may reactivate, leading to large-scale overall instability and forming the landslide-debris flow-river stoppage disaster chain. These findings provide scientific basis for local government emergency evacuation, disaster prevention, and mitigation strategies.