采矿塌陷区耕地破损评价指标体系分析

Analysis of Land Breakage Evaluation Index System in Mining Subsidence Area

通过深入分析采矿塌陷区耕地质量破损演化过程,认为采矿塌陷区耕地破损可分为可耕性破损、土壤环境破损及土壤本底质量破损;以采矿塌陷区耕地破损状况为研究对象,提出了指标选取的科学性原则、目的性原则、可行性原则以及敏感性原则,并建立了基于矿山地表移动变形规律的评价指标体系;采用专家打分法以及层次分析原理对各层指标进行了重要性排序。所得结论将矿山耕地质量研究与矿山地表移动变形规律研究联系了起来,为矿山地质环境整治以及矿山地表耕地的保护提供了有益的参考。

Through analyzing the evolution of the damaged cultivated land in mining subsidence area, this paper pointed out that the land breakage could be divided into three parts namely arable ability damage, environmental dam- age and soil quality damage. For the selection of the land breakage evaluation index, the principles of scientific ap- proach, purpose determining, feasibility and sensitivity arc put forward. According to these principles, an index sys- tem in hierarchy structure of breakage evaluation in mining subsidence area has been set up based on mining surface movement. The arrangement sequence of every hierarchy and the overall hierarehy is eompleted referring to Analytic Hierarchy Process theory, based on judgment matrix which is made out by corresponding experts. It＇ s shown that the surface subsidence is the most important index for land breakage. The conclusion has combined land quality evalua- tion research with mining surface movement researeh in mining subsidence area. Furthermore, in the protection and treatment work of mine geological environment, it will provide the beneficial reference, especially in the field of the arable land protection.