超高水材料地裂缝充填治理技术

Research on ground fissure treatment filling with super-high-water material

为了进行西部采煤沉陷区地表生态恢复治理，针对采动引起的地表永久性地裂缝的治理，在进行超高水材料物理力学性能测试的基础上，研制了野外超高水材料地裂缝充填工艺及充填系统，提出了“深部充填一表层覆土一植被绿化”的地裂缝治理3步法，并以神东矿区大柳塔煤矿12203～12205工作面老采空区生态治理示范基地为试验区，进行了超高水材料地裂缝治理试验，通过与常规沙土充填方法对比分析发现，该系统采用水体积为94％的超高水材料进行地裂缝深部充填后，地表下沉量大大减小，且地表保水性能大大提高，植被长势良好。

The process and system of filling with super-high-water materials was developed, and the three-step method of ＂deep filling-surface soiling-vegetation planting＂ was put forward. It is important for surface ecological recovery treatment of mining subsidence area in western China to control the ground fissure caused by underground mining. The experiment was performed in the subsidence area of the old goal of 12303-12305 working face in Daliuta Coal Mine in Shendong, and the results show that the surface subsidence of filling with 94% water volume of super-high-water material decreases by 50% , comparing with sand and soil filling. At the same time, the ground water retention property is improved greatly ,which is also beneficial to the vegetation growth.