固体废弃物矿山充填多层次封闭技术研究

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。

Study on Multi-level Sealing Technology of Solid Waste Mine Filling

In view of the sealing problem of solid waste filling in mine goaf, the following conclusions are drawn through theoretical analysis, field investigation and other methods: (1) To determine the sealing target of solid waste deep well: solid waste deep geological disposal achieves a stable state, and the target of effective sealing period is set as 20 years (reference standard); (2) To put forward a multi-level sealing technology system for solid waste mine filling, which includes regional sealing, surface sealing and filling. (3) Complete high-strength hard rock or expansive soft rock is the ideal surrounding rock for regional sealing; (4) Design a channel sealing structure suitable for solid waste mine filling, which has two functions of support and sealing; (5) To design a multi-level closed technology system for filling solid waste mines in a coal mine.