府谷沙沟岔煤矿导水裂缝带发育高度规律研究
发布时间：2018-11-17 09:27
【摘要】：本文以府谷沙沟岔煤矿地质资料为依据,利用经验公式和数值模拟方法研究研究区水裂缝带发育规律。取得如下成果:(1)利用《规程》和《规范》中所提出的经验公式计算采场导水裂缝带发育高度着较大的差别,一次采全高下《规范》计算出的导水裂缝带发育高度是《规程》的2左右。(2)《规范》计算结果和数值模拟结果基本接近,《规程》计算结果和数值模拟结相差较大。经验公式(《规范》)和数值模拟方法在府谷沙沟岔煤矿适用。(3)府谷沙沟岔煤矿导水裂缝带高度随着煤层采厚的增大而增大,裂采比先随着层采厚增大而增大,当增大到一定值后又随着煤层采厚增大而减小。煤层采厚小于时,煤层采厚与裂采比呈正相关关系,4m时裂采比达到最大(26.5);煤层采厚大4m时,裂采比呈波动下降,煤层采厚8m时,裂采比已降至18.6。(4)府谷沙沟岔煤矿导水裂缝带高度随着工作面的增大而减小,裂采比也随着工面增大而减小。
[Abstract]:Based on the geological data of Fugu Shagoucha coal mine, the law of the development of water fracture zone in the area is studied by means of empirical formula and numerical simulation method. The results are as follows: (1) using the empirical formulas proposed in "regulations" and "specifications" to calculate the height of the fracture zone of water conduction in the stope, there is a great difference in the height of the development of the fracture zone. The developed height of the water-conducting fracture zone calculated under the first mining height is about 2 of that of the regulation. (2) the calculated results are basically close to the numerical simulation results, and the difference between the calculated results and the numerical simulation results is quite large. Empirical formula (< Specification >) and numerical simulation method are applicable in Fugu Shagoucha Coal Mine. (3) the height of water diversion fracture zone increases with the increase of mining thickness of coal seam, and the ratio of fracture to mining increases with the increase of mining thickness at first. When the coal seam thickness increases to a certain value, it decreases. When the mining thickness of coal seam is smaller than that of coal seam, there is a positive correlation between mining thickness of coal seam and the ratio of split to mining, and the maximum ratio of coal seam mining is reached at 4 m (26.5). When the mining thickness of coal seam is 4 m, the ratio of split to mining decreases, and the ratio of fracture to mining decreases to 18.6when the coal seam thickness is 8 m. (4) the height of water diversion fracture zone of Fugu Shagou Cha coal mine decreases with the increase of working face, and the ratio of fracture to mining decreases with the increase of workface.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD745
本文编号：2337291
[Abstract]:Based on the geological data of Fugu Shagoucha coal mine, the law of the development of water fracture zone in the area is studied by means of empirical formula and numerical simulation method. The results are as follows: (1) using the empirical formulas proposed in "regulations" and "specifications" to calculate the height of the fracture zone of water conduction in the stope, there is a great difference in the height of the development of the fracture zone. The developed height of the water-conducting fracture zone calculated under the first mining height is about 2 of that of the regulation. (2) the calculated results are basically close to the numerical simulation results, and the difference between the calculated results and the numerical simulation results is quite large. Empirical formula (< Specification >) and numerical simulation method are applicable in Fugu Shagoucha Coal Mine. (3) the height of water diversion fracture zone increases with the increase of mining thickness of coal seam, and the ratio of fracture to mining increases with the increase of mining thickness at first. When the coal seam thickness increases to a certain value, it decreases. When the mining thickness of coal seam is smaller than that of coal seam, there is a positive correlation between mining thickness of coal seam and the ratio of split to mining, and the maximum ratio of coal seam mining is reached at 4 m (26.5). When the mining thickness of coal seam is 4 m, the ratio of split to mining decreases, and the ratio of fracture to mining decreases to 18.6when the coal seam thickness is 8 m. (4) the height of water diversion fracture zone of Fugu Shagou Cha coal mine decreases with the increase of working face, and the ratio of fracture to mining decreases with the increase of workface.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD745
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