钢筋网架锚喷支护技术的研 究与应用.pdfVIP

Value Engineering • 109 • 钢筋网架锚喷支护技术的研究与应用 R esearch and A pplication o f the Steel T russ A n ch or and Shotcrete Support Technology 王 玉 W A N G Y u (淮北矿业股份有限公司袁庄煤矿，淮北235058) (Yuanzhuang Coal Mine of Huaibei Mining Co ., Ltd ., Huaibei 235058 , China ) 摘要:袁庄煤矿作为一个已经开采50多年的老矿来讲，庞大的巷修工程量一直是困扰着煤矿人的一个难题。钢筋网架锚喷支护 采用主、被动相结合的支护形式，能有效地控制围岩的变形，合理分解围岩应力，使支护效果达到最佳。可大大减少巷修工程量，延长 巷修周期，有效地缓解了巷修成本投入过高、占用人力资源过多、巷修安全风险过大等一系列问题。 Abstract : Yuanzhuang Coal Mine is an old mine for more than 50 years , a huge amount of roadw-ay repair project has been a problem for coal mine workers . The supporting for^n of the combination of the main and the passive is used in the reinforcement of the steel truss anchor and shotcrete support . It can effectively control the defor^nation of surrounding rock , reasonably decompose the stress of surrounding rock and make the supporting effect better . It also can greatly reduce the amount of roadw-ay maintenance , extend the repair cycle of roadway maintenance , effectively ease the high cost of roadway repair , the large number of manpower , high risks of roadway maintenance repair security and other problems . 关键词：钢筋网架锚喷;巷道维修;注浆加固；巷道量测；应力稳定 Key words : steel truss anchor and shotcrete ； roadway maintenance ； grouting reinforcement ； roadw-ay measurement ； stress stability 中图分类号:TD353 文献标识码:A 文章编号：1006-4311( 2016 )20-0109-03 0 引言 为保证充填质量，对填充材料进行了要求，若间隙大于 袁庄煤矿是一个具有开采50多年历史的老矿，巷道 300mm ，应采取木楔、矸石或者混凝土制预制板等进行充 顶板岩性较差，围岩破碎巷道压力大。该矿IV 1 下部车场 填；反之若间隙小于300mm ，直接以混凝土进行喷实。 采用架设U29型钢半圆拱金属支架配合金属网支护，巷 ⑤ 对钢筋网架支架的设计需要封底，为进一步增强底 道底鼓频繁、支架变形量大。卧底周期一般在4~6个月，维 板支护，以增强支架稳定性，故在每片网架的下部分别打 修周期一般在8~10个月。维修