固体废弃物矿山充填多层次封闭技术研究

Study on multi-level sealing technology for mine filling using solid waste

针对矿山采空区充填固废的封闭问题,通过理论分析、现场调研等方法,对深井固废多层次封闭技术进行了研究,得到以下主要结论:固废深井封存包含固废隔离、长期封闭和固废稳定三方面,确保固废深地质处置达到稳定状态,封存年限为20年以上;建立了固废矿山充填多层次封闭技术体系,包括区域封存、表面封闭、充填体封闭和通道封闭4个层次的封闭结构。对试验矿进行了固废矿山充填多层次封闭技术体系的初步设计,为后期封闭工作的实施提供了理论基础。

Aiming at the sealing problems of solid waste in mine goaf filling,a multi-level sealing technology is studied through theoretical analysis and field investigation for mine filling with solid wastes.The main conclusions are as follows:the deep underground sealing of solid waste has three stages,including isolation,long-term sealing and stabilization,and the sealing period is at least 20 years;a sealing system with four-level sealing structure is established,including regional sealing,surface sealing,filling body sealing and tunnel sealing.Finally,a preliminary design on the multi-level sealing system for the mine filling with solid wastes is developed in a case study.The results from this paper will lay a theoretical foundation for the implementation of the sealing technology in the future.