化乐煤矿泥化软岩巷道支护及快速掘进技术研究
发布时间：2018-09-14 07:30
【摘要】：本文针对化乐煤矿1201运输平巷地质条件,通过实验室试验、现场调研、理论分析、数值模拟和现场工业性试验等方法,对化乐煤矿泥化软岩巷道支护及快速掘进技术进行了深入分析研究。通过岩石力学测试和岩样组分分析,认为化乐煤矿1201运输平巷属于泥化软岩巷道。分析认为导致1201运输平巷围岩变形失稳的主要原因有:○1围岩承载能力低且遇水泥化膨胀,产生膨胀压力;○2 U型钢支架架后空间使支架受到不均匀的集中荷载和偏心荷载作用,造成支架在很小的地压下即发生变形破坏;○3顶板破碎,临时支护不合理导致巷道顶板随挖随冒。根据1201运输平巷地质条件进行了支护方案设计,确定采用管棚法进行超前支护,管棚长度6m、环向间距30cm、倾角5°,采用U25型钢+注浆+喷浆进行永久支护,U型钢排距0.8m,注浆材料参数W:C=1:1、S:C=0.04:1,并结合FLAC3D数值模拟软件对设计方案进行了检验。分析了1201运输平巷掘进速度低的主要原因,并从施工技术和施工工序两个方面进行了优化。针对1201运输平巷围岩特点,对悬臂式掘进机截割路线进行了优化,并针对巷道底板软弱情况下掘进机行走困难的问题提出了解决方案。运用PERT网络计划技术,对巷道掘进施工工序进行优化设计,绘制了1201运输平巷巷道掘进工序网络图。
[Abstract]:According to the geological conditions of 1201 transport roadway in Huale Coal Mine, the methods of laboratory test, field investigation, theoretical analysis, numerical simulation and field industrial test are used in this paper. In this paper, the support and fast tunneling technology of muddy soft rock roadway in Huale Coal Mine are deeply analyzed and studied. Through rock mechanics test and rock sample composition analysis, it is considered that 1201 transport roadway of Huale Coal Mine belongs to muddy soft rock roadway. It is considered that the main reasons for the deformation and instability of surrounding rock in 1201 transport roadway are the low bearing capacity of the surrounding rock of Wei 01 and the expansion of the surrounding rock in cement, resulting in expansion pressure. The rear space of 02U steel support frame causes the support to be subjected to uneven concentrated load and eccentric load, resulting in the deformation and destruction of the support under very small ground pressure, and the breaking of the roof of the support. The unreasonable temporary support causes the roof of the roadway to rise with the excavation. According to the geological conditions of 1201 transport roadway, the support scheme is designed, and the pipe shed method is adopted to support ahead of time. The length of the pipe shed is 6 m, the circumferential distance is 30 cm, and the inclination angle is 5 掳. The U25 steel grouting is used for the permanent support of the U-shaped steel row distance of 0.8 m, and the grouting material parameter W: C: 1: 1 S: C0. 04: 1. The design scheme is tested with the FLAC3D numerical simulation software. This paper analyzes the main reasons for the low driving speed of 1201 transport roadway and optimizes it from two aspects: construction technology and construction procedure. According to the characteristics of surrounding rock of 1201 transport roadway, the cutting route of cantilever roadheader is optimized, and the solution is put forward to solve the problem that roadheader is difficult to walk under the condition of weak roadway floor. Using PERT network planning technology, the optimization design of roadway tunneling construction procedure is carried out, and the network diagram of 1201 transportation roadway tunneling procedure is drawn.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353
本文编号：2241995
[Abstract]:According to the geological conditions of 1201 transport roadway in Huale Coal Mine, the methods of laboratory test, field investigation, theoretical analysis, numerical simulation and field industrial test are used in this paper. In this paper, the support and fast tunneling technology of muddy soft rock roadway in Huale Coal Mine are deeply analyzed and studied. Through rock mechanics test and rock sample composition analysis, it is considered that 1201 transport roadway of Huale Coal Mine belongs to muddy soft rock roadway. It is considered that the main reasons for the deformation and instability of surrounding rock in 1201 transport roadway are the low bearing capacity of the surrounding rock of Wei 01 and the expansion of the surrounding rock in cement, resulting in expansion pressure. The rear space of 02U steel support frame causes the support to be subjected to uneven concentrated load and eccentric load, resulting in the deformation and destruction of the support under very small ground pressure, and the breaking of the roof of the support. The unreasonable temporary support causes the roof of the roadway to rise with the excavation. According to the geological conditions of 1201 transport roadway, the support scheme is designed, and the pipe shed method is adopted to support ahead of time. The length of the pipe shed is 6 m, the circumferential distance is 30 cm, and the inclination angle is 5 掳. The U25 steel grouting is used for the permanent support of the U-shaped steel row distance of 0.8 m, and the grouting material parameter W: C: 1: 1 S: C0. 04: 1. The design scheme is tested with the FLAC3D numerical simulation software. This paper analyzes the main reasons for the low driving speed of 1201 transport roadway and optimizes it from two aspects: construction technology and construction procedure. According to the characteristics of surrounding rock of 1201 transport roadway, the cutting route of cantilever roadheader is optimized, and the solution is put forward to solve the problem that roadheader is difficult to walk under the condition of weak roadway floor. Using PERT network planning technology, the optimization design of roadway tunneling construction procedure is carried out, and the network diagram of 1201 transportation roadway tunneling procedure is drawn.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353
【参考文献】
相关期刊论文 前8条
1 梁国栋;惠长德;韩昌良;杜厚永;;煤矿巷道金属支架的发展及应用[J];能源技术与管理;2010年01期
2 周建功;马国红;张雷;;探究标准工序在煤矿企业管理中的应用[J];价值工程;2012年04期
3 尤春安;巷道金属支架的静力计算[J];矿山压力与顶板管理;1993年01期
4 陈庆敏,刘亮,陆士良;改善U型钢支护技术的途径[J];矿山压力与顶板管理;1993年Z1期
5 曾佑富;伍永平;来兴平;魏成;;复杂条件下大断面巷道顶板冒落失稳分析[J];采矿与安全工程学报;2009年04期
6 王成;张农;韩昌良;李桂臣;钱德雨;;U型棚锁腿支护与围岩关系数值分析及应用[J];采矿与安全工程学报;2011年02期
7 王其洲;谢文兵;荆升国;臧龙;张农;;动压影响巷道U型钢支架-锚索协同支护机理及其承载规律[J];煤炭学报;2015年02期
8 柴肇云;郭卫卫;康天合;陈维毅;;水化学环境变化对泥质岩胀缩性的影响[J];岩石力学与工程学报;2013年02期
相关硕士学位论文 前1条
1 任飞;不同载荷作用下U型钢支护的破坏机理研究[D];安徽理工大学;2013年
，本文编号：2241995
本文链接：https://www.wllwen.com/kejilunwen/kuangye/2241995.html
