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Primary study on the "θ" letter type overlying multi-strata spatial structure of mining face surrounded by mined areas
引用本文:汪华君,姜福兴.Primary study on the "θ" letter type overlying multi-strata spatial structure of mining face surrounded by mined areas[J].煤炭学报(英文版),2007,13(3):256-260.
作者姓名:汪华君  姜福兴
作者单位:[1]Key Laboratory of Mine Disaster Prevention and Control, Shandong University of Science & Technology, Qingdao 266510, China [2]College of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
摘    要:The overlying strata spatial structure academic viewpoint thinks the primary factor which controls the stope presses is the overlying strata spatial structure movement; the spatial structure above the later period coal pillar surrounded by mined areas is the most complex overlying strata spatial structure and study on its evolution law has the important realistic project significance for strata movement control and production safety. The existing research results indicate that the special structure of the first working face of the mine begins to develop lengthways from stratum movement above mined areas and extends level in the exploitation direction. From existing overlying strata spatial structure fundamental research achievement, the spatial structure above the later period coal column surrounded by mined areas have following characteristic: The spatial structure formation is from the top to the lower and from large to small. According to the findings, a formula with the use of rock layer migration angle delta was put forward to estimate isolated island coal column width on which different stratum structure is gonging to form.

关 键 词:煤炭开采  开采面  上覆岩层空间结构  支撑压  煤炭隔离柱
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