晋宁磷矿6号坑东采区边坡稳定性研究

发布时间：2018-04-11 11:33

本文选题：边坡 + 地质调查　；参考：《昆明理工大学》2015年硕士论文

【摘要】：露天矿山是围绕穿爆、采装、运输、排土、复土植被等五大工序进行生产的大型系统。如今,晋宁磷矿已经逐步进入深部开采,开采方式由山坡露天开采转为深部凹陷开采,边坡高度逐年增加,边坡稳定性维护难度逐渐增大,给边坡稳定性和采矿人员生命财产造成了严重地威胁。为了增强边坡稳定性和保障采矿人员生命财产安全,提出了晋宁磷矿6号坑东采区边坡稳定性研究。本文在参考大量文献的基础上,结合晋宁磷矿6号坑东采区边坡工程的自身特点,基于地质调查、勘探试验、数值计算、边坡监测、边坡治理等对边坡稳定性进行系统研究,主要研究内容有以下几方面：(1)调查和收集晋宁磷矿资料,得到了晋宁磷矿6号坑东采区边坡工程水文地质条件。(2)基于地质调查和勘探试验,得出了东采区边坡失稳相关地层、节理裂隙及断层、滑坡体、典型的三个剖面。(3)采用数值计算对典型的三个剖面按照三类工程概况进行边坡稳定性分析,得出东采区边坡的破坏模式和不同工况下的稳定性。(4)综合比较顺层的边坡治理方案,锚索(杆)的加固方案更适合在东采区边坡治理中采用,并完善边坡防排水方案。(5)对边坡的表面位移、深部位移、支护结构受力进行监测,从而能有效预测边坡变形趋势,指导边坡正常施工,同时为边坡加固提供依据。本文根据晋宁磷矿6号坑东采区边坡实际情况,提出相应的预防和治理东采区边坡失稳的方法与措施,使边坡失稳对矿山企业危害降低到最低程度,为类似工程提供可借鉴经验。
[Abstract]:Open-pit mine is a large production system which revolves around five major processes, such as blasting, mining, transportation, dumping and vegetation.Today, Jinning Phosphate Mine has gradually entered deep mining, the mining mode has been changed from open-pit mining on hillside to deep sag, slope height is increasing year by year, and the difficulty of slope stability maintenance is gradually increasing.It poses a serious threat to slope stability and the life and property of miners.In order to enhance the slope stability and ensure the safety of life and property of mining personnel, a study on slope stability of No. 6 pit east mining area of Jinning Phosphate Mine was put forward.Based on a large number of references and the characteristics of slope engineering in No. 6 pit east mining area of Jinning Phosphate Mine, this paper makes a systematic study on slope stability based on geological investigation, exploration test, numerical calculation, slope monitoring, slope control, and so on.The main research contents are as follows: 1) investigation and collection of Jinning phosphate rock data, the hydrogeological conditions of slope engineering in the east mining area of No. 6 pit of Jinning phosphate mine are obtained. Based on geological investigation and exploration test, the relevant strata of slope instability in East Mining area are obtained.Joints, fractures and faults, landslide bodies, typical three sections. 3) the slope stability analysis of typical three sections according to three types of engineering profiles is carried out by numerical calculation.It is concluded that the failure mode and stability under different working conditions of the slope in the east mining area are more suitable for the slope treatment in the east mining area than the slope treatment scheme of the bedding, and the reinforcement scheme of the anchor cable (rod) is more suitable for the slope treatment in the east mining area.The surface displacement, deep displacement and support structure of the slope are monitored, which can effectively predict the deformation trend of the slope, guide the slope construction, and provide the basis for the reinforcement of the slope.According to the actual situation of the slope in the east mining area of No. 6 pit of Jinning Phosphate Mine, this paper puts forward the corresponding methods and measures to prevent and control the slope instability in the east mining area, so as to reduce the damage of the slope instability to the minimum degree to the mining enterprise.It can be used for reference for similar projects.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD87

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