矿山采空区灾害风险分级与失稳预警方法
发布时间：2018-10-10 15:57
【摘要】：针对矿山采空区灾害评估和监测中存在的理论难点和关键技术,本文开展了以下创新性的工作： (1)研究了采空区的分类方法、类别特点、组成结构、发展规律、灾害类型和分布规律,提出了“采空区(群)”的基本概念,形成了以“采空区”为研究对象的知识体系框架； (2)在对全国部分矿山和五矿集团下属49座矿山采空区调查统计的基础上,提出了采空区等别的划分方法,建立了采空区登记检查、动态评估、监测预警的分级管理方法； (3)采用Voronoi结构划分顶板荷载,基于Obert-Duvall矿柱强度准则和“流变-突变”理论,建立了采空区失稳链锁式效应的三维空间-时间计算方法,在江西香炉山钨矿开展了应用研究； (4)基于激光测距技术和围岩与锚杆共同作用理论,研究开发了基于无线传输技术的采空区围岩变形-应力在线监测预警系统,提出了局部预报(绝对值预报、变形速率预报、变形加速度预报)和区域预报的方法,并在盘古山钨矿和西石门铁矿开展了应用研究。 论文研究取得的认识和结果对于我国矿山采空区安全监管和采空区灾害评估、监测等治理工作具有积极意义。
[Abstract]:In view of the theoretical difficulties and key technologies in mine goaf disaster assessment and monitoring, this paper has carried out the following innovative work: (1) the classification method, classification characteristics, composition structure and development law of goaf are studied. The basic concept of "goaf (group)" is put forward, and the knowledge system frame of "goaf" is formed. (2) on the basis of the investigation and statistics of goaf in some mines and 49 mines belonging to Minmetals Group, this paper puts forward the method of dividing goaf, and establishes the registration inspection and dynamic evaluation of goaf. (3) using Voronoi structure to divide roof load, based on Obert-Duvall pillar strength criterion and "rheo-catastrophe" theory, a three-dimensional space-time calculation method for the instability chain effect of goaf is established. Based on the laser ranging technology and the interaction theory of surrounding rock and anchor rod, an on-line monitoring and warning system of surrounding rock deformation and stress in goaf is developed based on wireless transmission technology. The methods of local prediction (absolute value prediction, deformation rate prediction, deformation acceleration prediction) and regional prediction are put forward, and applied research is carried out in Pangushan tungsten mine and Xishimen iron mine. The understanding and results obtained in this paper are of positive significance to the safety supervision of goaf and the disaster assessment and monitoring of goaf in China.
【学位授予单位】：北京科技大学
【学位级别】：博士
【学位授予年份】：2015
【分类号】：TD32
本文编号：2262384
[Abstract]:In view of the theoretical difficulties and key technologies in mine goaf disaster assessment and monitoring, this paper has carried out the following innovative work: (1) the classification method, classification characteristics, composition structure and development law of goaf are studied. The basic concept of "goaf (group)" is put forward, and the knowledge system frame of "goaf" is formed. (2) on the basis of the investigation and statistics of goaf in some mines and 49 mines belonging to Minmetals Group, this paper puts forward the method of dividing goaf, and establishes the registration inspection and dynamic evaluation of goaf. (3) using Voronoi structure to divide roof load, based on Obert-Duvall pillar strength criterion and "rheo-catastrophe" theory, a three-dimensional space-time calculation method for the instability chain effect of goaf is established. Based on the laser ranging technology and the interaction theory of surrounding rock and anchor rod, an on-line monitoring and warning system of surrounding rock deformation and stress in goaf is developed based on wireless transmission technology. The methods of local prediction (absolute value prediction, deformation rate prediction, deformation acceleration prediction) and regional prediction are put forward, and applied research is carried out in Pangushan tungsten mine and Xishimen iron mine. The understanding and results obtained in this paper are of positive significance to the safety supervision of goaf and the disaster assessment and monitoring of goaf in China.
【学位授予单位】：北京科技大学
【学位级别】：博士
【学位授予年份】：2015
【分类号】：TD32
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