PDF全文阅读

唐承忠¹ , 郝永河² , 郝永艳³ , 杨    华⁴

 

(1. 鄂尔多斯市水旱灾害防御技术中心 , 鄂尔多斯   017000;

2. 鄂尔多斯市农牧技术推广中心 , 鄂尔多斯   017000;

3. 山西省煤炭地质水文勘查研究院 , 太原   030006; 4. 太原市杏花岭区防汛抗旱保障中心 , 太原    030013)

摘  要: 为准确掌握碎石土老滑坡的复活演化机理及其稳定性 , 结合滑坡区地质环境条件及发育特征 , 先开展其复活因素及演化流程分析 , 并在此基础上 , 通过传递系数法评价滑坡现状稳定性 , 并利用 WOA-RVM- GRNN 模型实现滑坡变形预测 , 以分析其稳定性发展特征 。结果表明 : 老滑坡复活诱发因素较为完备 , 是在固有内在因素存在前提之下 , 由外在因素诱发复活而成 ; 老滑坡演化流程较为清晰 , 其基覆界面存在台阶特征 , 是由地壳新构造运动间歇抬升 , 加之不断下侵 、侧蚀所致 , 且滑体是崩坡物堆积而成 。经稳定性分析 , 滑坡在不利工况条件下 , 滑坡稳定性属欠稳定 ~基本稳定状态 , 且滑坡后续变形趋势等级为Ⅲ级 , 变形不具收敛特征 , 失稳风险相对较大 。通过研究 , 有效掌握了碎石土老滑坡的复活机理 , 并为其稳定性评价提供了一种思路 , 值得进一步推广验证。

关键词: 碎石土老滑坡 ; 复活因素 ; 复活演化机理; 变形预测 ; 稳定性评价

中图分类号: P642      文献标志码: A      文章编号: 1005-8249 (2026) 05-0050-06

DOI:10. 19860/j. cnki. issn1005-8249. 2026. 05. 008

 

TANG Chengzhong¹ , HAO Yonghe² , HAO Yongyan³ , YANG Hua⁴

(1. Ordos Technical Center for Flood and Drought Disaster Prevention, Ordos 017000, China;

2. Ordos Agricultural and Animal Husbandry Technology Promotion Center, Ordos 017000, China;

3. Shanxi Coal Geological Prospecting Institute of Hydrology, Taiyuan 030006, China;

4. Taiyuan Xinghualing District Flood Control and Drought Relief Guarantee Center, Taiyuan 030013, China) 

Abstract : To accurately understand the revival and evolution mechanisms of old landslides in crushed soil and their stability this study first analyzes the factors triggering their revival and the evolutionary process, based on the geological environmental conditions and developmental characteristics of the landslide area.  Subsequently, the current stability of the landslide is evaluated using the transfer coefficient method, and the deformation prediction is achieved through the WOA - RVM - GRNN model to analyze its stability development characteristics. The results indicate: the factors inducing the revival of old landslides are relatively comprehensive, forming under the premise of inherent internal factors triggered by external factors; the evolutionary process of old landslides is relatively clear, with stepped features at the base-cover interface caused by intermittent uplift of crustal new tectonic movements, coupled with continuous downward intrusion and lateral erosion, and the sliding mass is formed by the accumulation of collapse materials.  Stability analysis reveals that under unfavorable working conditions, the landslide exhibits a state of unstable to basically stable, with a subsequent deformation trend classified as Grade III, lacking convergence characteristics, and presenting relatively high instability risks. Through this research, the revival mechanism of old landslides in crushed soil is effectively grasped, providing a new approach for stability assessment that warrants further promotion and validation.

Key words: gravel soil old landslide; revival factors; revival evolution mechanism; deformation prediction; stability evaluation

项目来源 : 内蒙古自治区“ 科技兴蒙”项目重点专项项目 (2021EEDSCXSFQZD011)。

作者简介 : 唐承忠 (1968—) , 男, 本科, 高级工程师, 研究方向 : 农业水土工程。

收稿日期 : 2024-06-05