兖州矿业(集团)公司在东滩煤矿成功地进行了综采放顶煤工作面覆岩注浆减缓地面沉陷的研究,在理论上和实践上均有新的突破,取得了良好的环保效果,最近已经由专家通过了技术鉴定。 兖州矿区地处鲁西南平原,是一个年产20Mt煤炭的高潜水位矿区,“三下”压煤严重,征地与迁村费用高昂,因而进行了以减缓地表沉降、减少绝产塌陷面积、少迁或者缓迁村庄为目的的研究。研究人员利用物探检测技术,查明浆液的空间扩散范围,为注浆设计提供了根据。试验中还采用了变形测量技术,对地表的移动和变形进行了实时监测,为评价覆宕注浆减沉效果提供了科学的依据。研究结果表明:采用覆岩注浆减缓地表沉降技 Yanzhou Mining (Group) Co., Ltd. successfully carried out research on the ground subsidence caused by overburden grouting in the fully mechanized top coal caving face in Dongtan Coal Mine, both in theory and in practice, and achieved good environmental protection effect. Recently, experts have passed the technical appraisal. Yanzhou mining area is located in the southwestern plains, is an annual output of 20Mt coal high potential mining area, “three under” serious coal, land acquisition and relocation of the high cost of the village, which was carried out to slow down the surface subsidence, reduce the area of ​​collapse, less Study for the purpose of relocating or relocating villages. Researchers using geophysical detection techniques to identify the scope of the spatial dispersion of slurry for grouting design provides a basis. The deformation measurement technique was also used in the experiment to monitor the movement and deformation of the ground surface in real time, which provided a scientific basis for evaluating the effect of overlying grouting settlement. The results show that: the use of overburden grouting to slow down the surface subsidence technology