废弃煤矿结构演化与水系调整规律研究

项目名称： 废弃煤矿结构演化与水系调整规律研究

项目编号： No.51274110

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： 王来贵

作者单位： 辽宁工程技术大学

项目金额： 87万元

中文摘要： 煤矿废弃后，矿井地层结构演化与水系调整并没有停止。项目采用现场考察、理论分析、数值模拟、实验研究、现场应用和综合分析相结合的研究方法，研究废弃煤矿区域地层结构、矿井结构特征，建立废弃煤矿矿井结构与含水层、隔水层及水源补给边界条件。采用自制实验设备，实测废弃煤矿岩石试件拉张蠕变破裂度、压缩蠕变密实度及其渗透系数随时间变化规律；建立岩石试件拉张蠕变破裂-压缩蠕变密实模型、孔隙-裂隙渗流本构方程以及岩石试件拉张蠕变破裂判据。建立地层结构变形-破裂的流变数学模型、冒落带破裂-密实过程的水渗流数学模型以及变形-破裂-裂隙渗流的耦合数学模型；引入单元内各向同性、单元间非协调等效单元和动态破坏单元，进行有限元法求解，开发计算程序。在阜新、辽源、抚顺及双鸭山等废弃煤矿现场应用，分析废弃矿井结构演化规律与水资源流失、地表积水与地下水自然恢复成因。提出废弃矿井结构演化与水资源流失、地表积水治理优化方案。

中文关键词： 废弃煤矿；结构演化；拉张蠕变破裂；渗透率；含水量

英文摘要： After the coal mine discarded, the structure evolution and water system adjustment of coal mine stratums could not stopped . The project will combine of research methods on investigating in situ, theoretic analysis，numerical simulation，test researching,application in situ as well as the synthesis analyzing. Study on the coal mins region stratums structure, structural characteristics of the coal mine,set up the boundary conditions between the abandoned coal mine structure and the aquifer, impermeable layer, and water supply,Measuring from abandoned mines of rock specimen tensile creep rupture degree, compression creep density as well as permeability coefficient with time variation by the laboratory equipment. Establish the rock specimen tensile creep rupture - compression creep dense model, pore-fracture seepage constitutive equation, as well as the rock specimen tensile creep rupture criterion. Set up the stratigraphic structure deformation rheological - rupture mathematical model, rupture - compacting process water flow mathematical model in the caving zone as well as deformation - failure - coupled mathematical model of fracture seepage. By introduction of the isotropic element, non-coordination equivalent element between the different elements, and dynamic destruction element . carry out the solving by the f

英文关键词： discarded coal mines；structure evolution；tension creep fructure；the permeability；water content