Deformation characteristics of open-pit slope affected by excavation loading

WANG Tao; ZHAO Ruhui

Safety in Coal Mines > 2021 > 52(2): 231-234.

WANG Tao, ZHAO Ruhui. Deformation characteristics of open-pit slope affected by excavation loading[J]. Safety in Coal Mines, 2021, 52(2): 231-234.

Citation:

WANG Tao, ZHAO Ruhui. Deformation characteristics of open-pit slope affected by excavation loading[J]. Safety in Coal Mines, 2021, 52(2): 231-234.

Citation:

WANG Tao, ZHAO Ruhui. Deformation characteristics of open-pit slope affected by excavation loading[J]. Safety in Coal Mines, 2021, 52(2): 231-234.

Deformation characteristics of open-pit slope affected by excavation loading

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Published Date: February 19, 2021

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Abstract

Abstract

Deformation characteristics of open-pit slope affected by excavation loading Aiming at the stability of open pit slope under excavation unloading, the deformation characteristics of slope under excavation unloading are studied by numerical simulation and theoretical analysis method, and a practical fast identification method of slope stability is proposed. Taking the slope of the dump along the south end slope of the first mining area of Heidaigou Open-pit Mine as an example, the stress and deformation characteristics of typical section under the condition of step excavation of the end slope are analyzed by finite element numerical simulation method, and the characteristics of slope deformation in time and space are summarized. The open-pit side under the condition of excavation and unloading is analyzed theoretically. The cumulative effect of slope deformation and the principle that the deformation does not increase orderly when the slope is destroyed by instability are compared with the results of monitoring and safety factor calculation, which shows that the relevant conclusions and methods are applicable to engineering practice.
- open pit slope,
- slope stability,
- excavation unloading,
- deformation characteristics,
- cumulative effect

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[1]	王宁,杜学领,万保华,等.不同降雨条件下露天矿边坡稳定性分析[J].煤矿安全,2015,46(5):223-226. WANG Ning, DU Xueling, WAN Baohua, et al. Open-pit slope stability analysis under different rainfall conditions[J]. Safety in Coal Mines, 2015, 46(5): 223-226.
[2]	宋光明,史秀志,陈寿如.露天矿边坡爆破振动破坏判据新方法及其应用[J].中南工业大学学报(自然科学版),2000,31(6):481-484. SONG Guang ming, SHI Xiu zhi, CHEN Shouru. New method for determining blasting vibration damage criterion on open-pit slope and its application[J]. Journal of Central South University of Technology, 2000, 31(6): 481-484.
[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. ZHANG Zhongchao, LI Wei, WANG Jun, et al. Displacement disassembly and monitoring analysis of loess floor dump slope affected by underground mining[J]. Safety in Coal Mines, 2017, 48(3): 205-208.
[4]	M B Etkin, A E Azarkovich. Evaluating rock damage zones due to blasting at junctions between open excavation[J]. Hydrotechnical Construction, 2001, 35(6): 289.
[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]	胡海浪.岩质边坡稳定参数敏感性分析及其开挖卸荷岩体力学参数研究[D].宜昌:三峡大学,2008.
[7]	吕颖慧,刘泉声,胡云华.基于花岗岩卸荷试验的损伤变形特征及其强度准则[J].岩石力学与工程学报,2009,28(10):2096-2103. LU Yinghui1, LIU Quansheng, HU Yunhua. Damage deformation characteristics and its strength criterion based on unloading experiments of granites[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(10): 2096-2103.
[8]	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. HUANG Runqiu. Geodynamical process and stability control of high rock slope development[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(8): 1525-1544.
[9]	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. LI Wei. Treatment technology and stability analysis of dump slope in open mine[J]. Coal Science and Technology, 2014, 42(10): 37-40.
[10]	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. LIU Yufeng, LI Wei, MA Ming, et al. Optimization of treatment technology for landslide in yinwan dump of heidaigou open-pit mine[J]. Safety in Coal Mines, 2017, 48(9): 96-99.

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