复杂地质条件下大采高综采技术可行性研究

发布时间：2018-07-22 15:53

【摘要】：针对阳泉矿区在复杂地质构造条件下,应用大采高综采工艺的可行性缺乏科学严谨论证的问题,以阳煤一矿已回采的8310和8303工作面为背景,通过理论分析、数值模拟和现场实测对大采高条件下围岩灾变机理及特征进行了研究,认为阳泉矿区大采高综采受工作面顶板结构、煤层强度、构造和仰采角度等因素影响较大;然后以待采的81303工作面为例,对其工作面开采技术条件进行了分析,认为81303工作面采用大采高开采合理的采高应控制在5.5 m以下;受工作面煤层强度低、厚度大、倾角大、顶板破碎以及地质构造发育等不利因素影响,81303工作面大采高一次采全高的适应性较差。
[Abstract]:In view of the lack of scientific and rigorous demonstration on the feasibility of applying large mining height fully mechanized mining technology in Yangquan mining area under the condition of complex geological structure, taking the 8310 and 8303 working face of Yangquan No. 1 Coal Mine as the background, the theoretical analysis is carried out. Numerical simulation and field measurement are carried out to study the catastrophic mechanism and characteristics of surrounding rock under the condition of large mining height. It is considered that the fully mechanized mining of large mining height in Yangquan mining area is greatly affected by the roof structure, coal seam strength, structure and mining angle. Then taking the 81303 face to be mined as an example, this paper analyzes the technical conditions of the mining face, and thinks that the reasonable mining height of the 81303 face should be controlled below 5.5m by adopting the large mining height mining, because the coal seam intensity is low, the thickness is large, the inclination angle is large, the coal seam is low, the coal seam thickness is large and the inclination angle is large. The unfavorable factors, such as roof breakage and geological structure development, affect the adaptability of large mining height to the whole mining height.
【作者单位】：阳泉煤业(集团)有限责任公司;
【基金】：国家重点研发计划资助项目(2016YFC0600708) 国家自然科学基金面上基金资助项目(51474128);国家自然科学基金青年基金资助项目(51304115)
【分类号】：TD823.97

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