利用煤矸石恢复治理新汶矿区沉陷土地探讨

Discussion on the Gangue Utilization in Recovery and Control of Land Subsidence in the Xinwen Mining Area

新汶矿区在煤炭资源开采的同时,形成了大面积的沉陷区,并产生大量的煤矸石,通过技术可行性分析,得出利用煤矸石回填沉陷土地复土造田不会对农作物造成二次污染的结论。探讨了煤矸石回填塌陷区和采砂坑的设计方案,包括治理的方法、矸石回填的工作程序以及回填后复垦土地的利用。进行了经济效益分析,得出矸石回填沉陷土地复土造田不仅可以取得较好的生态效益,而且可获得可观的经济效益。

The Xinwen Mining Area has been in the mining of coal resources and, at the same time, has formed a large area of subsidence as well as the large number of coal gangues. Through technical feasibility analysis, it can get an answer that the use of gangue to backfill the land subsidence and build a farmland will not cause secondary pollution of crops. So, this paper uses the control methods of gangue backfilling in the Xinwen mining subsidence areas, and discusses the design plan of the subsidence area backfilling with coal refuse and sand pit, respectively, including the control methods, the working procedures of backfilling and the use of reclamation land. The paper also has carried out the analysis of economic performance. The conclusion is that the land subsidence areas backfilled with the coal gangue to make the farmlands not only can obtain a better ecologic performance, but also acquire considerable economic benefit.