埋深1300m大倾角复合岩层巷道围岩综合控制技术研究  

Study on comprehensive control technology of roadway surroundings with large-dip angle compound strata in coal mine with depth of 1300m

作　　者：范明建[1,2] 康红普[1,2] 林健[1,2] 任勇杰[3] 赵鹏[4] 张辉[5] 赵光雷[4] 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013 [2]煤炭科学研究总院开采设计研究分院,北京100013 [3]山东能源新汶矿业集团有限公司生产技术部,山东泰安271000 [4]山东能源新汶矿业集团有限公司潘西煤矿,山东莱芜271100 [5]河南理工大学能源科学与工程学院,河南焦作454000

出　　处：《采矿与安全工程学报》2015年第5期706-713,共8页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(U1261211);国家"十二五"科技支撑计划项目(2012BAB13B02)

摘　　要：针对矿井岩层倾角大、地应力水平高、巷道穿越不同岩层等围岩条件,以埋深1 300 m的深部矿区典型矿井延伸巷道为例,在原支护参数存在问题分析与支护效果评价的基础上,对支护参数选取原则和巷道围岩控制方法进行研究。通过井下地质力学测试、围岩变形破坏特征分析,提出深部大倾角复合岩层巷道全断面强力复合支护与巷道关键部位强化支护的设计理念。通过对高刚度强力护表构件、全长高预应力注浆锚索、锚杆高效减摩装置的开发与应用,满足了深部高应力复合岩层巷道围岩综合控制的需要。结果表明:"全断面强力锚网支护与注浆加固为一体"的综合围岩控制技术,能够解决深井高应力巷道围岩变形量大、持续时间长、破坏严重的支护难题,实现了深井岩巷围岩的一次有效支护,避免了服务期间的二次支护和反复维修。According to the geological and production situation such as compound strata with large dip angle, high level in-situ stress, roadway crossing through different strata frequently and so on, the suitable supporting forms and scientific surroundings control methods of roadway in deep coal mine have been researched. The paper has taken typical roadway with depth of 1 300 m in deep coal mine as engineering background. Some main supporting design ideas of roadway in deep coal mine have been determined by systematic geo-mechanical on-site tests, analyzing the characteristics of surroundings deformation and its failure zones. The comprehensive control technology with combining bolts-net-cables and grouting reinforcement could prevent large and endless integral deformation of roadway surroundings. It is also important to take some extraordinary supporting manners in specific regions to avoid roadway＇s local failures. At the same time, some supporting components and materials such as W-shape plate with 4 ribs, full anchored and pre-stress grouting cables, high-efficient antifriction gasket for bolts were designed to meet the needs of surroundings control. The engineering practice has proved that the comprehensive control technology that combines full-face strong anchor net supporting with grouting reinforcement could make roadway surroundings in stable state, reduce roadway repair tasks and achieve effectively supporting by once for roadway surroundings in deep coal mine by solving the supporting problems of surrounding rock deformation, long duration and serious destroy.

关 键 词：大倾角 复合岩层 穿层巷道 支护与注浆加固 综合围岩控制 

分 类 号：TD355[矿业工程—矿井建设]