首页|锚杆钻车运行中支护承载结构及围岩受力变形分析

锚杆钻车运行中支护承载结构及围岩受力变形分析

Analysis on the Deformation of the Supporting Bearing Structure and Surrounding Rock During the Operation of Anchor Rod Drilling Vehicles

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目的 针对单轨液压锚杆钻车运行过程中支护承载结构及围岩受力变形难以观测分析的问题.方法 利用研发的CMMD4-35煤矿用单轨液压锚杆钻车,结合长城五矿1902S回风巷巷道现场情况综合分析钻车在大断面大倾角巷道动态运行的支护、承载及围岩协同受力变形特征.结果 研究表明,钻车运行过程中吊挂板的受力变形在悬吊点处均达到峰值,工字钢在悬吊点的部分位移最小,与钻车直接接触的部分受力最大;锚索中部主要受到拉应力,靠近巷道一侧主要受到剪应力,而巷道两帮的锚杆拉应力主要分布在靠近巷道内部一侧;巷道顶板悬吊点处位移最大,两帮靠近顶板位移高于底板处,而巷道偏向低帮处底板的位移大于高帮处;以单轨液压锚杆钻车为核心的新型配套工艺可以有效控制围岩变形,支护效果良好,比传统以掘锚一体机为中心的机器化工艺掘进效率更高.结论 研究明确了CMMD4-35煤矿用单轨液压锚杆钻车在实际应用的可行性,解决了现有掘锚一体机难以在复杂地质条件下大断面煤巷自动化掘进支护的问题,提升了煤巷支护效果掘进效率,为CMMD4-35煤矿用单轨液压锚杆钻车的现场应用提供了理论依据.
Objective In response to the problem of difficult observation and analysis of the support bearing struc-ture and surrounding rock deformation during the operation of the monorail hydraulic anchor rod drill truck.Methods The CMMD4-35 monorail hydraulic anchor rod drill truck developed for coal mines was used to analyze comprehensively the support,bearing and collaborative stress deformation characteristics of the drill truck during dynamic operation in the large cross-section and large inclination roadway of the 1902S return air roadway of Great Wall No.5 Mine,combined with the on-site situation.Results The research showed that the force deform-ation of the suspension plate during the operation of the drilling rig reached its peak at the suspension point,with the displacement of the I-beam at the suspension point being the smallest and the force on the part in direct con-tact with the drilling rig being the largest.The central part of the anchor cable was mainly subjected to tensile stress,while the side near the tunnel was mainly subjected to shear stress.The tensile stress of the anchor rods on both sides of the tunnel was mainly distributed on the side near the interior of the tunnel.The maximum dis-placement occured at the suspension point of the roadway roof,with the displacement of the two sides near the roof being higher than that of the floor.The displacement of the floor at the lower side of the roadway was greater than that at the higher side.The new supporting technics,with a good support effect,centered on the monorail hydraulic anchor rod drilling vehicle controlled effectively the deformation of surrounding rock.Compared with the traditional mechanized process centered on the excavation anchor integrated machine,the excavation efficien-cy was high.Conclusion The research clarified the feasibility of the practical application of the CMMD4-35 coal mine monorail hydraulic anchor drill car,solved the problem that the existing anchor excavator was difficult to automatically excavate and support large section coal roadway under complex geological conditions,improved the coal roadway support effect and excavation efficiency and provided a theoretical basis for the on-site application of the monorail hydraulic anchor rod drilling vehicle used in CMMD4-35 coal mines.

anchor rod drilling vehicleanchor rod and cablebearing structuresupport structuretunnel surrounding rockforce deformation

王雁冰、梅洪嘉、张京泉、李凯、刘珍、李杨

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中国矿业大学(北京)力学与土木工程学院,北京 100083

新矿内蒙古能源有限责任公司,内蒙古 鄂尔多斯 016200

江西蓝翔重工有限公司,江西 萍乡 337000

锚杆钻车 锚杆锚索 承载结构 支护结构 巷道围岩 受力变形

国家重点研发计划基金资助项目国家自然科学基金重点项目中央高校基本科研业务费专项资金资助项目

2021YFC2902103519340012023JCCXLJ02

2024

10.3969/j.issn.1672-1098.2024.01.001

安徽理工大学学报(自然科学版)
安徽理工大学

安徽理工大学学报(自然科学版)

影响因子：0.331
ISSN：1672-1098
年,卷(期)：2024.44(1)
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