排土场边坡变形稳定性及失稳位移判据研究
Study on Deformation Stability and Instability Displacement Criterion of Dump Slope
-
摘要: 将支撑拱原理引入排土场边坡变形稳定性研究中,推导了排土场边坡失稳位移判据,并将研究成果应用于工程实例。通过对土拱原理和支撑拱存在条件的分析,提出了排土场边坡变形全过程中的支撑拱破坏识别方法。以变形稳定性中的最大变形判别准则为基础,通过临界滑移值与实时位移值的关系定义了变形稳定系数,通过支撑拱峰值强度点位移推导了位移失稳判据。将研究成果应用于黑岱沟露天矿南端帮回采时其沿帮排土场的稳定性管理,有效保障了人员和设备的安全。Abstract: The theory of supporting arch is introduced into the study of slope deformation stability in the dump field, and the criterion of slope instability displacement is deduced, and the results are applied to the engineering example. Based on the analysis of the principle of soil arch and the existing conditions of supporting arch, a method for identifying the failure of supporting arch in the whole deformation process of dump slope is proposed. Based on the maximum deformation criterion in the deformation stability, the deformation stability coefficient is defined by the relation between the critical slip value and the real time displacement value. The displacement instability criterion is derived by supporting the peak strength point displacement of the arch. The research results are applied to the stability management of the dumping ground in the southern end of Heidaigou Open-pit Mine, which effectively ensures the safety of the personnel and equipment.
-
Keywords:
- dump slope /
- supporting arch /
- deformation stability /
- displacement criterion /
- critical slip value
-
-
[1] 李伟.露天煤矿排土场边坡稳定性分析与治理技术[J].煤炭科学术,2014,42(10):37-40. [2] 刘玉凤,李伟,马明,等.黑岱沟露天矿阴湾排土场滑坡治理技术优化[J].煤矿安全,2017,48(9):96-99. [3] 张忠超,李伟,王俊,等.井采扰动黄土基底排土场边坡位移分解与监测分析[J].煤矿安全,2017,48(3):205-208. [4] 马明.宝日希勒露天矿南帮边坡稳定分析与治理方案[J].煤矿安全,2017,48(3):219-222. [5] 张忠超.端帮开挖影响下沿帮排土场边坡稳定性研究[D].北京:煤炭科学研究总院,2017. [6] 黄润秋.岩石高边坡发育的动力过程及其稳定性控制[J].岩石力学与工程学报,2008,27(8):1525-1544. [7] 朱建明,赵琦.考虑土拱效应的挡土墙主动土压力与被动土压力统一解[J].岩土力学,2014,35(9):2501. [8] 林庆涛,朱建明,康瑶.考虑土拱效应的挡土墙空间土压力研究[J].岩石力学与工程学报,2015,34(9):1918-1927. [9] 蔡泽宏.基于监测数据的台风暴雨型土质滑坡预警判据研究[D].福州:福州大学,2015. [10] 秦四清,王媛媛,马平.崩滑灾害临界位移演化的指数律[J].岩石力学与工程学报,2010,29(5):873.
计量
- 文章访问数: 97
- HTML全文浏览量: 0
- PDF下载量: 0
下载:
