小纪汗煤矿11203综采面矿压规律研究

发布时间：2018-04-11 21:22

本文选题：矿山压力 + 支架适应性　；参考：《西安科技大学》2015年硕士论文

【摘要】：我国中厚煤层储量丰富,综采随着高产高效的优点日益突出和配套设备的重大进展,已经成为国内中厚煤层开采的主流技术。但是,由于煤层赋存条件的不同,矿井采用综采技术后所显现的矿压规律并不完全一样。同时,由于综采支架发展很快,支架在不同煤层赋存条件下会出现适应性不好的情况。小纪汗煤矿作为国家规划的“陕北侏罗纪煤田榆横矿区(北区)”第一个千万吨级现代化矿井,对其进行工作面矿压规律和支架适应性研究具有着重要的现实与理论意义。论文以小纪汗矿11203综采面采场和巷道为主要研究对象在现场调研了工程地质概况的基础上,理论分析了综采工作面上覆岩层结构及运动规律,对11203综采面进行液压支架支护工作阻力、两巷超前应力分布、两巷围岩表面位移等方面进行监测,较全面掌握监测工作面的矿压显现规律及工作面沿走向、倾向方向的应力分布特征。同时对支架适应性进行研究,通过提高液压支架初撑力以保证支架的支护效率,增强支架适应性,以保证工作面安全、高效的生产。该研究对揭示并总结该种煤层赋存条件下,工作面和巷道矿压显现规律,完善相应开采技术及支护措施,保证工作面的高产高效具有重要的意义。
[Abstract]:With the advantages of high production and high efficiency and the significant development of supporting equipment, fully mechanized coal mining has become the mainstream technology in mining medium thick coal seam in China.However, due to the different conditions of coal seam occurrence, the law of mine pressure after adopting fully mechanized mining technology is not exactly the same.At the same time, because of the rapid development of fully mechanized coal mining support, the support will have poor adaptability under different coal seam conditions.Xiao-Jihan Coal Mine is the first modern mine of "Yuheng Mining area (North District) of Jurassic Coal Field in Northern Shaanxi Province", which is planned by the state. It is of great practical and theoretical significance to study the working face pressure law and support adaptability.On the basis of investigation of engineering geology on the basis of the investigation of engineering geology on the basis of the investigation of engineering geology on the basis of the research on the stope and roadway of No. 11203 fully mechanized face in Xiaojihan Coal Mine, this paper theoretically analyzes the overlying strata structure and movement law of the fully mechanized mining face.The working resistance of hydraulic support support for 11203 fully mechanized coal face, the advance stress distribution of two roadways, the surface displacement of surrounding rock of two roadways and so on are monitored in order to master the law of rock pressure appearance of monitoring working surface and the direction of working face in an all-round way.The characteristics of stress distribution in the inclined direction.At the same time, the adaptability of the support is studied to ensure the support efficiency and support adaptability by improving the initial support force of the hydraulic support, so as to ensure the safe and efficient production of the working face.This study is of great significance to reveal and summarize the law of mine pressure in coal face and roadway under the condition of the occurrence of coal seam, to improve the corresponding mining technology and supporting measures, and to ensure the high yield and high efficiency of the working face.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD323

【相似文献】