建筑物下压煤开采技术研究

Study on the coal mining technology under buildings

根据我国煤田深部开采的实际需要,对已有理论和实测资料进行分析,研究了极不充分开采采出宽度和煤柱留设宽度的计算办法,论述了极不充分开采地表移动的基本特征;并以极不充分开采地表沉陷理论为基础,通过对实测资料的整理和分析,结合深部开采地表移动规律及生产实践,提出了适合建筑物深部压煤开采的阶段开采技术,对减小地下开采对地表建筑物的损害程度、有效提高煤炭采出率有一定的现实意义。

According to the actual need of deep coal mining in China, through analyzing the theory and the field data, studying the calculating method of the mining width and the coal pillar width in ultra subcritical mining, the basic characteristics of surface movement of ultra subcritical mining are expounded. Basing on the surface subsidence theory in ultra subcritical mining, through analyzing and sorting out the field data, considering the surface movement trend in deep mining and the practice experience, the stage mining technique which suits for coal mining under buildings is put forward. This technique has practical significance to reduce the buildings damage caused by the deep mining and improve coal recovery coefficient.