高水材料充填技术在减小地表沉降中的应用

Surface subsidence based on filling technology with materials of high water content

高水材料用于采空区充填有着工艺简单、凝结速度快、性能稳定等优点。采用建立地表沉降观测站方式,研究了用高水材料充填采空区后地表沉降变形规律。结果显示,充填后地表的下沉量明显减小。2009年5—12月,充填后地表最大下沉值为165.6mm,月平均下沉20.7mm。该方法用于减小开采引起的地表沉降,比传统的充填方法效果明显。

Technology of filling with materials of high water content has many advantages,such as process simpli-fication,fast condensation,and stable performance.After filling with materials of high water content,the settlement deformation of surface deformation observation stations was studied.Experimental studies have shown significant reduction of surface subsidence.Since May 2009 the establishment of the settlement movement of surface observa-tion stations to December 2009 the surface maximum subsidence was 165.6 mm after filling,the average monthly subsidence 20.7 mm.This method reduces more surface subsidence caused by mining than the traditional method of filling.The method has obvious effect and provides an effective new approch for coal mining under railway,buildings and the water body.