土工基础

›› 2019, Vol. 33 ›› Issue (2): 173-176.

• 工程实录 • 上一篇    下一篇

基于云模型的“三高”地区边坡稳定性综合评价

汤新能，李元松，冉小青，曹泽鑫   

  1. （武汉工程大学土木工程与建筑学院，武汉 430073）
  • 收稿日期:2018-06-23 修回日期:2018-06-29 出版日期:2019-04-20 发布日期:2019-04-22
  • 通讯作者: 李元松（1964-），男，教授，研究方向为岩土工程。
  • 作者简介:汤新能（1994-），男，硕士研究生，研究方向为岩土工程稳定性。
  • 基金资助:

    武汉工程大学研究生教育创新基金项目(CX2017040)

Stability Evaluation of Slopes in High Altitude Low Temperature and High Seismic  Intensity Areas Using the Cloud Model

TANG Xinneng, LI Yuansong, RAN Xiaoqing, CAO Zexin   

  1. （School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430073）
  • Received:2018-06-23 Revised:2018-06-29 Online:2019-04-20 Published:2019-04-22

摘要： 针对高寒、高海拔、高地震烈度“三高”地区岩质边坡稳定性影响因素的特殊性和随机性，提出了基于正态云模型的“三高”地区岩质边坡稳定性综合评价模型。综合考虑工程地质特征、地形地貌、工程环境等要素，选取岩土风化程度、地震烈度、抗冻系数和植被覆盖率等11个影响该类特殊地区岩质边坡稳定性的评价指标，运用正态云模型和指标权重计算各评价指标隶属于各等级的确定度，并判定边坡稳定性等级。将该评价模型应用于乌尉高速公路k53~k78区段岩质边坡的稳定性评价，评价结果能客观地反映项目的实际状况，为这类地域岩质边坡的稳定性评价提供了参考实用价值。

关键词: 正态云模型, &ldquo, 三高&rdquo, 地区, 岩质边坡, 稳定性评价, 不确定性

Abstract: Considering the particularity and randomness of the influencing factors on the stability of rock slopes in areas with low temperature, high altitude and high seismic intensity, an evaluation method for the rock slope stability in these areas is proposed using the normal cloud model theory approach. With the understanding of engineering geology features, topographic conditions, engineering environments, eleven potentia  stability influence factors, such as, degree of weathering of rock and soils, seismic intensity, coefficient of freeze resistivity and vegetation coverage, were selected for the slope stability evaluation. The normal cloud model and the weight of each factor were used to determine the degree of certainty and the slope stability class. This approach was applied to the evaluation of the rock slope stability between stations K53 and K78 in Wu-Yu Expressway Project. The satisfactory evaluation results were obtained, and the results are consistent with the construction observations.

Key words: normal cloud model, high altitude low temperature and high seismic intensity areas, rock slopes, stability evaluation, uncertainty