软岩顶板巷道掘进围岩协同控制技术研究  

Research on Collaborative Control Technology of Soft Rock Topping Roadway Excavation Surrounding Rock

作　　者：王之伟 Wang Zhiwei(Fenxi Mining Gaoyang Coal Mine,Xiaoyi Shanxi 032300)

机构地区：[1]汾西矿业高阳煤矿,山西孝义032300

出　　处：《机械管理开发》2022年第10期155-156,159,共3页Mechanical Management and Development

摘　　要：山西某矿15106运输巷掘进期间揭露顶板软岩段,顶板泥质石灰岩及巷帮煤体呈现裂隙发育、稳定性差特点,巷道围岩变形量较大。基于此,在对巷道顶板软岩段围岩岩性分析的基础上,将巷道断面由矩形改为直墙半圆拱形,并提出采用协同控制技术方案对围岩进行控制,具体充分发挥锚网索主动支护技术、钢架棚被动支护技术优势,以及通过喷浆对巷道表层裂隙进行封堵,降低空气、水对围岩弱化的影响。经现场应用后,巷道围岩变形得以有效控制,两帮、顶底板变形量分别控制在93 mm、37 mm以内,实现了软岩顶板巷道围岩的有效控制。The soft rock section of the roof slab was revealed during the excavation of 15106 haul road in a mine in Shanxi, and the muddy limestone of the roof slab and the coal body of the roadway gang showed fissure development and poor stability characteristics, and the deformation of the surrounding rock of the roadway was large. Based on this, based on the analysis of the lithology of the surrounding rock in the soft rock section of the roadway roof, the roadway section is changed from rectangular to straight wall semi-circular arch shape, and a synergistic control technology scheme is proposed to control the surrounding rock, specifically giving full play to the advantages of anchor mesh cable active support technology, steel frame shed passive support technology, as well as sealing the cracks on the roadway surface by slurry spraying to reduce the influence of air and water on the weakening of the surrounding rock. After the field application, the deformation of the roadway surrounding rock can be effectively controlled, and the deformation of the two helpers and the top and bottom plates are controlled within 93 mm and 37 mm respectively, which realizes the effective control of the surrounding rock in the roadway of soft rock top slab.

关 键 词：巷道掘进 软岩顶板 围岩支护 协同控制 

分 类 号：TD353[矿业工程—矿井建设]