30101覆岩裂隙带.doc

30101覆岩裂隙带
30101工作面开采后覆岩裂隙带高度数值模拟分析
摘要:,为研究工作面开采后的覆岩裂隙带范围,本文拟采用UDEC数值模拟的方法确定第覆岩的裂隙带高度。采用UDEC软件建立模拟模型,模型尺寸为200m×140m,对整个工作面推进过程中的裂隙带范围进行模拟分析,确定工作面推进20m后期裂隙发育高度稳定,最终确定裂隙带高度为33m。关键词:裂隙带高度;数值模拟;UDEC软件;裂隙带发育过程
Analysis of the height of the overlying strata in the mining area of
30101 working face
Abstract: the design of 30101 working face is , which is used to study the range of the overlying strata after mining. This paper intends to use UDEC numerical simulation method to determine the height of the fractured zone of the first cover. UDEC software is used to establish the simulation model. The model size is 200m × 140m. The fracture zone in the whole working face is simulated and analyzed, and the height of the fracture development in the late period of 20m is determined. The height of fracture zone is 33m.
Key words: height of fracture zone; numerical simulation; UDEC software; development of fracture zone
1 工程概况
山西蒲县蛤蟆沟煤业有限公司30101采煤工作面位于3#煤层中,地面标高+1 247—+1 353 m,井下标高+1 130—+1 170m,该工作面位于乔家湾乡行政区,昕水河以东50 m山岭地带,地表无建筑物,无农田。该工作面位于矿井西北边界,西侧为矿井边界,北侧为矿井与开拓煤业边界,各留设保安煤柱20m。南侧与301采区胶带运输巷相连,东侧为实体煤。上部为2108采空区,下距7#。该
2工作面运输巷走向长度914m,回风巷885 m,倾斜长度130 m,面积117 000 m.
该煤层结构复杂,比较稳定, m,可采指数百分之百,根据30101运输巷,回风巷,切眼揭露资料显示, m,煤层倾角3°~5°。煤层结构复杂,中部有一层夹矸,~ m左右。%~%,%~%,%~%,%