荷载作用下磷块岩破坏规律及工程应用研究

发布时间：2018-05-08 13:47

本文选题：磷块岩 + 强度　；参考：《武汉工程大学》2015年硕士论文

【摘要】：为了适应采矿安全、高效生产的要求,本文以贵州开磷集团马路坪矿为工程实际背景,在该矿现有的采矿技术的基础上,对在荷载作用下磷块岩的破坏规律的研究,是为了实现更加安全,有效的施工生产。研究荷载作用下磷块岩的破坏规律不仅对矿业的发展有重大的理论价值和经济价值,而且对磷块岩形成,结构裂隙,破坏规律等的认识上也有深远的意义。本文研究的主要内容有:(1)介绍了磷块岩在与国家项目有关的的背景以及研究它的重要意义,通过对大量的国内外文章的查阅,了解磷块岩的发展的趋势,说明自己的研究内容和技术路线。(2)文章依据岩石的破坏准则,查阅大量文献,简要的分析了磷块岩的物理力学性质以及破碎机理。(3)进行了磷块岩破坏规律试验。从取样、加工试件遇到的问题以及解决方案,到最终确定实验方案。采用岩石单轴抗压强度、点荷载实验来确定磷块岩的物理力学性质,得出了在单轴压缩条件下岩石大都是以压裂破坏为主,且主要的破裂面基本上与节理面垂直的规律。(4)最后简要分析锚杆支护的理论分析,结合开阳磷矿马路坪矿的实际情况,进行巷道支护锚固的设计。依据巷道围岩自身的情况,选择合适的锚固类型,目的是为了增强巷道自身承载力,对岩体能够起到主动加固的作用。锚杆、锚索、锚网等支护形式能够有效的提高巷道围岩的稳定性。锚杆、锚索支护不仅能够保证巷道中围岩的稳定性,还能够对巷道安全生产以及提高生产效率具有非常重要的意义。
[Abstract]:In order to meet the requirements of safe and efficient mining production, this paper takes the Maoping Mine of Kaifa Group, Guizhou Province, as the engineering background, and on the basis of the existing mining technology of the mine, studies the failure law of phosphorous block rock under the action of load. In order to achieve more safety, effective construction production. The study of the failure law of phosphorite under load is not only of great theoretical and economic value to the development of mining industry, but also of profound significance to the understanding of the formation of phosphorite, the structural fissure and the law of destruction. The main contents of this paper are: (1) the background and significance of phosphorus rock in relation to national projects are introduced. By consulting a large number of articles at home and abroad, we can understand the development trend of phosphorus block rock. According to the failure criterion of rock, this paper refers to a large number of documents, and briefly analyzes the physical and mechanical properties of phosphorite and the crusher mechanism. 3) the failure law test of phosphorite is carried out. From sampling, processing problems and solutions, to finalizing the test plan. The physical and mechanical properties of phosphate block rock are determined by uniaxial compressive strength and point load test. It is concluded that fracturing is the main failure of rock under uniaxial compression. The main fracture surface is basically perpendicular to the joint surface. Finally, the theoretical analysis of bolt support is briefly analyzed, and the design of roadway support and Anchorage is carried out in combination with the actual situation of Kaiyang Phosphate Mine. In order to strengthen the bearing capacity of roadway and strengthen the rock mass, the appropriate anchoring type is chosen according to the surrounding rock itself. Bolting, anchor cable, anchor mesh and other supporting forms can effectively improve the stability of roadway surrounding rock. Bolting and cable bolting can not only guarantee the stability of surrounding rock in roadway, but also play an important role in safe production of roadway and improvement of production efficiency.
【学位授予单位】：武汉工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353

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