地下水对伊敏露天矿内排土场边坡稳定的影响
Influence of Groundwater on Slope Stability of Internal Dump in Yimin Open-pit Coal Mine and Its Countermeasures
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摘要: 伊敏露天煤矿内排土场在排弃过程中出现多个出水点,为保证露天矿的安全生产,需查明边坡内部地下水渗流路径,分析地下水对内排土场边坡稳定性的影响。通过水文地质条件分析、地下水对岩土体产生物理作用的理论分析、水对土体强度参数影响的试验研究等,得出含水率的增加对排土场基底泥岩和排弃物料的强度有明显弱化;对排土场现状及设计状态2种状态下地下水渗流规律进行了数值模拟研究,得出地下水对边坡稳定性的影响规律,并根据渗流分析结果提出内排土场的边坡地下水超前疏干、集中抽排和压实封堵的综合防治措施。Abstract: There are multiple water outlets in the dumping process of inner dump in Yimin Open-pit Coal Mine. In order to ensure the safe production of open-pit mine, the seepage path of groundwater inside the slope should be found out and the influence of groundwater on the stability of the slope should be analyzed. Through the analysis of hydrogeological conditions, the theoretical analysis of the physical effect of groundwater on rock and soil mass, and the experimental study on the influence of water on soil strength parameters, it is concluded that the increase of water content has a significant weakening on the strength of foundation mudstone and discarded material in the dump. Based on the numerical simulation of the groundwater seepage law in the two states of dump, present and design, the influence of groundwater on slope stability is obtained. According to the results of seepage analysis, comprehensive prevention and treatment measures for leading-drainage, centralized extraction and compaction and plugging of slope groundwater in the inner dump were proposed.
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Keywords:
- open-pit coal mine slope /
- slope stability /
- inner dump /
- ground water /
- seepage
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[1] 周玉新.矿山边坡裂隙岩体和排土场地下水流数值模拟研究[D].南京:河海大学,2005. [2] 王莉.露天矿大型排土场稳定性及安全控制关键技术研究[D].北京:北京科技大学,2015. [3] 刘福明,才庆祥,周伟,等.露天矿排土场边坡降水入渗规律试验研究[J].煤炭学报,2015,40(7):1534. [4] 刘才华,陈从新,冯夏庭,等.地下水对库岸边坡稳定性的影响[J].岩土力学,2005(3):419-422. [5] 周志芳,龚友平.地下水对边坡稳定性作用的动态效应[J]. 勘察科学技术,1990(4):14-19. [6] 谭超.地下水对滑坡的力学作用研究[D].成都:成都理工大学,2009. [7] 王静.地下水对边坡稳定性的影响分析[J].陕西建筑,2011(10):42-44. [8] 买合木提·巴拉提.动水条件下破损岩体边坡变形破坏机理与应用研究[D].乌鲁木齐:新疆农业大学,2013. [9] 陈松,余绍文,刘怀庆,等.高密度电法在水文地质调查中的应用研究—以江平圩幅为例[J].地球物理学进展,2017,32(2):849-855. [10] 李蛟.高村铁矿露天采场地下水疏干预测及疏干工艺研究[D].南京:南京大学,2013.
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