宁东矿区变厚直接顶煤巷支护技术研究
本文选题：变厚度岩层 + 直接顶 ； 参考：《西安科技大学》2017年硕士论文
【摘要】：不同厚度直接顶煤岩巷道稳定性控制依然是制约煤矿安全高效开采的共性理论与技术难题。本研究以宁东矿区双马煤矿变厚直接顶煤巷稳定性控制为目标,采用调查类比、理论分析、数值计算、现场监测与应用实践等方法,开展了不同厚度直接顶条件下煤巷支护技术研究。通过较为系统的调研调查分析,梳理了不同厚度下的直接顶变形破坏特征及其稳定性影响因素,探讨了在薄层直接顶、厚层整层直接顶和厚层复合顶板条件下,煤巷锚杆(索)支护作用原理。通过三维有限差分数值计算软件(FLAC),结合双马煤矿边界泄水巷地质赋存和开采条件,计算并揭示了不同厚度直接顶条件下的煤巷围岩应力和变形分布与发展特征规律,对比分析了不同支护形式下的煤巷围岩支护效果,提出了变厚直接顶煤巷围岩支护方法。现场应用过程中采用多种手段进行矿压观测与评价,实现了煤巷稳定性控制,为双马煤矿煤巷稳定性控制提供了理论依据。本研究为对宁东矿区类似复杂条件巷道稳定性控制提供了技术与工程借鉴,也为今后锚杆(索)支护技术在宁东矿区深部开采中应用提供了值得参考的方法。
[Abstract]:The stability control of direct top coal roadway with different thickness is still a common theoretical and technical problem restricting the safe and efficient mining of coal mines. The aim of this study is to control the stability of direct roof roadway with thickening in Shuangma Coal Mine of Ningdong Coal Mine. The methods of investigation analogy, theoretical analysis, numerical calculation, field monitoring and practical application are adopted in this study. The supporting technology of coal roadway under the condition of different thickness direct roof is studied. Through systematic investigation and analysis, the deformation and failure characteristics of direct roof and the influencing factors of its stability under different thickness are combed out, and the direct roof of thin layer, the whole layer of thick layer and the composite roof of thick layer are discussed under the condition of the direct top of thin layer, the direct roof of thick layer and the composite roof of thick layer. Action principle of bolting (cable) support in coal roadway. By means of 3D finite difference numerical calculation software FLACU, combined with geological occurrence and mining conditions of boundary drainage roadway in Shuangma Coal Mine, the distribution and development characteristics of surrounding rock stress and deformation of coal roadway under direct roof condition with different thickness are calculated and revealed. The supporting effect of surrounding rock of coal roadway under different supporting forms is compared and the supporting method of surrounding rock of direct roof roadway with varying thickness is put forward. In the process of field application, various methods are used to observe and evaluate the mine pressure, which realizes the stability control of coal roadway, and provides a theoretical basis for the stability control of coal roadway in Shuangma coal mine. This study provides a reference for the stability control of roadways under similar complex conditions in Ningdong mining area and for the application of bolting (cable) support technology in the deep mining of Ningdong mining area in the future.
【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】：TD353
【参考文献】
相关期刊论文 前10条
1 康红普;;我国煤矿巷道锚杆支护技术发展60年及展望[J];中国矿业大学学报;2016年06期
2 顾士超;尹增德;宗彩建;刘进晓;冯宜语;;深部断层破碎带巷道锚注加固机理研究与应用[J];煤炭技术;2016年08期
3 王琦;潘锐;李术才;何满潮;任尧喜;王雷;丁国利;孙会彬;江贝;;三软煤层沿空巷道破坏机制及锚注控制[J];煤炭学报;2016年05期
4 代进;强华龙;刘丽丽;孟庆新;;不同岩性直接顶受关键块影响的数值分析[J];煤炭技术;2015年04期
5 陈苏社;;特殊地质条件下掘进工作面顶板控制技术[J];煤炭科学技术;2014年04期
6 郭刚;崔泰华;;煤巷复合顶板锚杆支护技术在小屯煤矿的应用[J];山东煤炭科技;2014年03期
7 王成;张农;李桂臣;许兴亮;钱德雨;张念超;;上行开采顶板不同区域巷道稳定性控制原理[J];中国矿业大学学报;2012年04期
8 吴德义;高航;王爱兰;;巷道复合顶板离层的影响因素敏感性分析[J];采矿与安全工程学报;2012年02期
9 刘栋;阚磊;任松杰;蒋志刚;;厚层泥岩顶板巷道矿压规律研究及支护参数优化[J];中国煤炭;2011年09期
10 王威;;厚层复合顶板煤巷锚杆支护技术研究[J];山西焦煤科技;2011年09期
相关会议论文 前1条
1 袁亮;;淮南矿区高瓦斯复杂地质条件安全高效开采[A];中国煤炭学会第六次全国会员代表大会暨学术论坛论文集[C];2007年
相关博士学位论文 前2条
1 杨峰;高应力软岩巷道变形破坏特征及让压支护机理研究[D];中国矿业大学;2009年
2 李桂臣;软弱夹层顶板巷道围岩稳定与安全控制研究[D];中国矿业大学;2008年
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