中国安全科学学报 ›› 2022, Vol. 32 ›› Issue (S1): 140-144.doi: 10.16265/j.cnki.issn1003-3033.2022.S1.0837

• 安全工程技术 • 上一篇    下一篇

同一边坡角下不同边坡形态及稳定性研究

赵立春1(), 刘永杰2, 宗赫3, 徐勇超1, 王博2, 祁利民4   

  1. 1 扎鲁特旗扎哈淖尔煤业公司, 内蒙古 扎鲁特旗 029100
    2 内蒙古能源有限公司煤矿中心, 内蒙古 霍林郭勒 029200
    3 通辽市能源局 安全监管科, 内蒙古 通辽 028000
    4 霍林郭勒市能源局, 内蒙古 霍林郭勒 029200
  • 收稿日期:2022-01-12 修回日期:2022-04-06 出版日期:2022-06-30 发布日期:2022-12-30
  • 作者简介:

    赵立春 (1984—),男,内蒙古突泉人,硕士,工程师,主要从事露天开采理论与设计及边坡工程等方面的研究。E-mail:

    刘永杰 正高级工程师

    徐勇超 高级工程师

Study on different slope shapes and stability under same slope angle

ZHAO Lichun1(), LIU Yongjie2, ZONG He3, XU Yongchao1, WANG Bo2, QI Limin4   

  1. 1 Zhaluteqi Zhahanaoer Coal Industry Company, Zhaluteqi Inner Mongolia 029100, China
    2 Coal Mine Research of Inner Mongolia Energy Coal Industry Company, Huolinguole Inner Mongolia 029200,China
    3 Safety Supervision Section, Tongliao Energy Bureau, Tongliao Inner Mongolia 028000,China
    4 Huolinguole Energy Bureau,Huolinguole Inner Mongolia 029200,China
  • Received:2022-01-12 Revised:2022-04-06 Online:2022-06-30 Published:2022-12-30

摘要:

为明确同边坡角下不同边坡形态对类均质土质边坡稳定性影响,以类均质土质边坡为工程实例,基于强度折减和极限平衡理论分析,应用FLAC3D和SLOPE/W软件确定边坡破坏机理并进行稳定性评价。结果表明:在边坡高度为50 m、台阶坡面角70°、台阶高度分别为10和5 m等分平盘情况下,边坡角度为15、20和25°时,10 m台阶高度为比5 m的边坡稳定性系数大0.037~0.516;不同滑坡模式下同一边坡角优化圆弧潜滑坡模式下稳定系数最小;当边坡角小于20°时,圆弧滑动模式下稳定系数最大,边坡角大于25°,直线-基底滑动模式下稳定系数最大。

关键词: 同一边坡角, 边坡形态, 边坡稳定性, 极限平衡法, 强度折减, 滑坡模式

Abstract:

In order to study the influence of different slope forms on the stability of quasi-homogeneous soil slope under the same slope angle, taking quasi-homogeneous soil slope as an engineering example, based on the theoretical analysis of strength reduction and limit equilibrium, FLAC3D and SLOPE/W were applied to determine the slope failure mechanism and evaluate the stability. The results show that when the slope height is 50 m, the slope angle of the step is 70°, and the step height is 10 m and 5 m, respectively, equal flat plate, and the different potential effects of the slope angle of 15, 20 and 25° were studied respectively. The stability coefficient of the slope with a height of 10m is 0.037-0.516 larger than that of 5 m. Through the simulation calculation of different landslide modes, the stability coefficient of the optimal arc submerged landslide mode for the same slope angle is the smallest. When the slope angle is less than 20°, the stability coefficient is the largest in the arc sliding mode. When the slope angle is greater than 25°, the stability coefficient is the largest in the linear-base sliding mode.

Key words: same slope angle, slope shape, slope stability, limit equilibrium method, strength reduction, landslide pattern