建筑物下充填条带开采方案设计及效果评价

Design and Effect Evaluation of the Filling Strip Mining Scheme under Buildings

为了解放建筑物下煤炭资源,以邯郸矿区某矿断层发育区地质采矿条件为研究背景,基于超高水材料充填开采技术,提出了充填条带、冒落条带2种开采方案的工作面布置。在分析了地表变形预计参数的基础上,采用概率积分法基本原理,进行了地表变形预计,并对开采方案进行了优化设计,并给出了安全开采技术措施。结果表明:采用充填条带开采和冒落条带开采,分别可采出煤炭资源330.17万t、216.88万t,采出率分别为70%、45%,地表最大下沉分别为1 390 mm、1 420 mm,最大倾斜均为10.9 mm/m,建议采用超高水材料充填条带开采方案。此方案设计为类似地质采矿条件下的煤炭资源开采提供了理论依据和技术参考。

In order to recover the coal resources under buildings, taking the geological mining conditions of a developing fault area in Handan raining area as the research background, and based on the super high-water material filling raining tech- nology, and the working surface layout of the filling strip method and falling strip method was proposed. Based on the analysis of the expected parameters of surface deformation, the basic principle of probability integral raethod is used to predict the surface deformation, optimize the mining scheme, and propose the safety raining technology. The results show that the use of filling strip method can realize coal resources of 330. 17 million tons,the recovery rate of 70% ,the largest surface subsidence 1 390 ram, the maximum tilt of 10. 9 mm/m, while the use of falling strip method can realize coal resources of 216. 88 million tons, the re- covery rate of 45% ,the largest surface subsidence 1 420 rrara,the maximum tilt of 10. 9 mm/m. Therefore,the super-high water material filling strip mining method is recommended. This method provides the theoretical basis and technical reference for the exploitation of coal resources under the similar condition of geological mining.