石膏矿矿柱-护顶层支撑体系破坏机制的突变理论研究

项目名称： 石膏矿矿柱-护顶层支撑体系破坏机制的突变理论研究

项目编号： No.51274188

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 矿业工程

项目作者： 陈从新

作者单位： 中国科学院武汉岩土力学研究所

项目金额： 82万元

中文摘要： 本项目在分析我国石膏矿采空区特点及成灾原因的基础上，依托湖北荆门石膏矿采空区稳定性研究，采用理论分析、室内实验、现场监测与数值计算相结合的方法，分析石膏矿采空区稳定性因素、采空区护顶层-矿柱体系应力应变规律，研究采空区地质条件、几何结构、荷载、地下水条件与环境湿度、时间等对护顶层-矿柱体系变形破坏的影响规律，揭示石膏矿采空区破坏发生机制和控制条件；基于突变理论，从能量理论角度推导含有位移项的体系稳定性平衡方程，建立采空区突发破坏的突变分析模型；将提出的石膏矿护顶层-矿柱体系破坏突变预测模型应用于依托工程，实现依托工程采空区灾害的预测及防治。本项目研究将为石膏矿采空区灾害防治提供理论支撑，对推动石膏采掘业的可持续发展，具有较高理论价值和良好的应用价值。

中文关键词： 石膏矿；矿柱-护顶层；石膏岩蠕变；破坏机理；突变理论

英文摘要： Based on analyzing the characteristics and triggering mechanism of disaster of gypsum mines in China, the stability factors of goaf and the laws of stress and strain of roof-pillar system will be analyzed by using comprehensive methods of theoretical analysis, laboratory test, field monitoring and numerical calculation. The mechanism that how the geological conditions, geometry construction, load, underground water,environment humidity, and time influence the deformation and failure of pillar-roof system will also be studied, then the occurrence mechanism and the control conditions of failure of goaf will be disclosed.Based on the mutation and energy theory,the balance equation containing displacement variable of systematic stability will be gained and the analysis model of sudden destruction of goaf will be established. At last, the mutational prediction model of sudden collpase of pillar-roof system proposed will be applied to actual projects,predicting and preventing the disasters of the goaf. Results otbaned by this project will provide the theoretical support for the prevention of disaster in goaf of gypsum mines, and promote the sustainable development of mining gypsum.The research project has high value of theory and application.

英文关键词： gypsum mine；pillar-roof system；gypsum rock creep；failure mechanism；mutation theory