土工基础

›› 2017, Vol. 31 ›› Issue (2): 180-182.

• 工程实录 • 上一篇    下一篇

顺层岩质边坡稳定性计算强度参数折减方法

彭文祥，许 志，刘亚琴，蒋 菡   

  1. （中南大学地球科学与信息物理学院，长沙 430083）
  • 收稿日期:2016-02-29 修回日期:2016-03-06 出版日期:2017-04-20 发布日期:2017-05-04
  • 作者简介:彭文祥（1968-），男，工学博士（后），副教授，研究方向为岩土工程教学、科研与设计。

Application of the Strength Reduction Method in the Stability Evaluation of a Syncline Rock Slope

PENG Wenxiang, XU Zhi, LIU Yaqin, JIANG Han   

  1. (School of Geosciences and InfoPhysics, Central South University, Changsha 410083)
  • Received:2016-02-29 Revised:2016-03-06 Online:2017-04-20 Published:2017-05-04

摘要： 由于岩体具有随时间改变而变化，间断性和不均匀性的特征，目前合理的选取参数对于层状岩体边坡工程仍面临一些问题。岩体力学参数取值是边坡设计人员所关心的重点之一，而内摩擦角和粘聚力是设计的重点参数，但是对于顺层边坡完整岩石实验所得的参数不具代表性，所以合理折减其参数十分重要。采用ANSYS建模划分网格，将网格导入FLAC3D，利用强度折减技术和FLAC3D强大的数值计算能力相结合，对顺层岩质边坡进行强度参数折减。模拟在同岩层倾角下不同开挖坡度对岩石强度参数的折减情况。

关键词: ANSYS, FLAC3D, 强度折减, 顺层岩质, 边坡强度参数

Abstract: Due to the heterogeneity, discontinuity and rheology of the rock mass, the strength parameter determination of the layered rock mass for the rock slope evaluation has many uncertainties. The internal friction angle and the cohesion are the two major strength parameters in the rock slope engineering practice. However, they do not have enough representation for the syncline rock slopes. As a result, the appropriate strength reduction is critical to the success of slope stability evaluations. This paper established the finite element meshes using ANASYS and the numerical simulation was performed by FLAC3D using the strength reduction approach.

Key words: ANSYS, FLAC3D, Strength Reduction, Syncline Rock Slopes, Strength Parameters