云锡芦塘坝采空区稳定性分析

【作者】 郭银领；

【导师】 侯克鹏；

【作者基本信息】 昆明理工大学 ， 安全技术及工程， 2008， 硕士

【摘要】 矿山企业在地下矿床开采过程中形成的空间称为采空区,它破坏了岩体的原始静态平衡,使采空区的岩体应力产生变化而重新分布。当集中应力超出了岩石的强度,就会使采空区稳定性破坏,形成采空区灾害。采空区灾害是矿山常见的主要灾害之一,地压导致导致片帮、冒顶、突水、地震、岩爆、冲击地压、地面塌陷、地面沉降、地裂缝等多种形式的灾害,造成重大人员伤亡和设备事故,已成为矿山企业地下开采的主要灾害之一,引起了政府、企业的高度重视。大量没有处理的采空区的长期存在,在一定程度上给矿山安全留下了隐患,对井下的生产、井下工人的生命安全构成巨大威胁。本文针对云南锡业集团芦塘坝矿段地下开采过程中所形成的大量未处理的采空区的安全稳定性进行系统、深入研究,具体研究内容如下:(1)根据现场技术部门提供的采空区的资料以及对地下采空区现场调查的基础上,对各中段采空区的分布情况、采空区的几何参数、采空区的空间形态以及采空区群的分布状况进行整理分析。(2)在搜集、查询了有关影响采空区稳定性的大量文献和资料的基础上,对采空区稳定性影响因素进行系统的分析。(3)用AHP对影响采空区稳定性因素进行重要程度分析,为进一步分析采空区稳定程度做准备。(4)针对芦塘坝采空区数量多、分布广的特点,利用模糊聚类分析方法对大量的采空区进行了动态模糊聚类分析。(5)在动态聚类对采空区进行危险等级划分的基础上,利用BP神经网络对采空区进行采空区危险等级进行预测。(6)利用Visual C++编程语言和MATLAB数学软件对以上采空区分析计算过程进行编程,以利于快捷、高效的对采空区数据进行处理和分析,为矿山采空区处理提供有科学、快捷、高效的参考。更多还原

【Abstract】 The goaf is formed in the process of underground depositing by mine enterprises,which destroys the static balance of the original rock,so that the rock stress of goaf changes and redistributes.When the centralism stress has surpassed the strength of the rock,it will cause the stability of goaf to destroy.The disaster of goaf is one of common major disasters,which leads to collapse of wall,roof fall,water burst,earthquake,rock burst,the impact geostatic pressure,fall of ground,the surface subsidence,the crack and so on.It has become one of major disasters of underground mine,and has been highly taken by the government and the enterprises.A large number of the unprocessed goafs of long-standing,to a certain extent,keep the latent danger to the mine,which cause huge threat to the mine production and the life and safety of mine workers.In this paper,to Yunnan Tin Company Group Limited Lu tang ba the security stability of the massive unprocessed goafs in underground mining process are systematically and in-depth studied,the specific contents are as follows:(1)On the basis of the goaf data provided by the scene technical departments as well as scene investigation,it is analyzed and trimmed to the goaf of the various center-sections distribution,the geometry parameter, the spatial shape as well as the distribution of the group.(2)The stability influence factor of goaf is systematically analyzed after have collected and consulted massive literature and information.(3)The important degree of the stability influence factors about goaf is analyzed with AHP,which will prepare for further analyse.(4)According to the characteristic of Lu tang ba goaf that is quantity and widely distributed,a large number of goaf is dynamic fuzzy clustered with fuzzy clustering analytical clustering.(5)On the basis of hazard degree classified with the dynamic analytical clustering,Using BP neural networks to predict hazard degree of goaf.(6)Visual C++ programming language and the mathematics software of MATLAB is used on the above analysis computation process,in order to scientifically,quickly and highly efficiently process the data of goaf.更多还原