基于耗散结构的矿区采动生态承载力演变趋势

Mining-induced Evolution of Mine Ecological Environment Capability Based on Dissipative Structure Theory

基于耗散结构分析矿区采动生态承载力的演变趋势。首先分析矿区生态环境系统及其特征,提出矿区采动生态环境承载力的概念。利用矿区生态环境系统的耗散结构特征分析矿区采动生态环境承载力的演变规律,借助于RS技术测算采动生态环境承载力各状态变量值并进行采动变化趋势拟合,基于此构建矿区采动生态环境承载力的测算模型。最后以山西潞安矿区某典型开采沉陷区为例进行采动生态环境承载力测算及其采动效应分析,结果表明:研究区生态环境承载力呈现"巢形"采动变化趋势;可分解为4个演变阶段,即采后4～8 a的急剧下降阶段,采后9～12 a的缓慢下降阶段,采后13～22 a的低水平(约为6.0)维持阶段和采后23～40 a的缓慢复苏阶段。

Mining-induced evolution law of mine environment capability was analyzed by dissipative structure theory.Mine ecological environment system and the features were analyzed and then the concept of mining-induced ecological environment capacity was proposed.Evolution law of mining-induced ecological environment capacity was analyzed by means of dissipative structure characteristics of mine ecological environment system.The state variables of mine ecological environment capacity were calculated and their mining-induced change trend was fitted with the help of RS technology.The calculating model of mining-induced ecological environment capacity was built based on its.The typical mining subsidence areas of Lu’an Mine Group were finally selected as the case areas.The mining-induced ecological environment capacity was calculated and the mining-induced evolution trend was acquired.The mining-induced ecological environment capacity shows itself the nest shape,which can be divided into four phases,i.e.the toboggan phase from 4 to 8 years after mining,the slowly descent phase from 9 to 12 years,the low-level（about 6.0） keeping phase from 13 to 22 years and the slack recovery phase about 23 to 40 years.