大型地下储煤槽仓仓壁锚杆支护施工方法.pdf

施工技术 2012年8月上 92 CONSTRUCTION TECHNOLOGY 第41卷第370期 大型地下储煤槽仓仓壁锚杆支护施工方法 杨圣扩 (中煤建安公司第七十三工程处，河北邯郸056001) [摘要]在大型地下储煤槽仓仓壁采用错杆进行支护，能够保证被错固土体的稳定.主要介绍了错杆支护特点、工 艺原理、操作要点和质量控制措施.该方法在多个项目成功应用，应用效果表明预应力错杆在边坡加固中应用，有 利于减少土方开挖和弃方量，减少用地面积，从而减少对周边环境的破坏.临时性仓壁支护错杆面层与永久性结 构仓壁合二为一，有效地缩短了施工工期，大大降低了工程投资. [关键词]地基；槽仓；锚杆；加固；施工技术 [中图分类号]TU755.2 [文献标识码]A [文章编号]1002-8498(2012)15-0092-04 Construction Technology of Anchor Support in Silo Wall of Large Underground Coal Storage Yang Shengkuo China Coal Building Installation 73 Engineering Co.Ltd.Handan Hebei 056001 China) Abstract:The silo wall in large underground coal storage is supported by anchor which can assure stability of the anchored soil.This paper introduces in detail the characteristics of anchor support technique principle key operating points and quality control measures.The anchor support method is used in several projects.The application effect shows that the application of anchor in slope reinforcement can reduce soil excavation and discarding soil decrease land use area and so as to reduce damage to surrounding environment.The temporary anchor support surface of silo wall also as permanent silo wall structure can effectively shorten construction period reduce project cost. Key words:foundation;silos;anchor;reinforcement;construction 利用现有地形采用高强钢筋预应力锚杆支护 2)喷锚钢筋混凝土面层主动支护土体，并与土 边坡，直接由错杆错喷面层作为储煤煤仓仓壁结构体共同工作，随挖随支，挖完支完，安全经济. 层，是最近几年西北地区主要煤炭基地大型地下储 3)喷锚混凝土面层和耐磨层直接形成永久性 煤槽仓仓壁经常采用的结构形式.在仓壁深基坑 仓壁，支护和仓壁合一，减小仓壁施工难度. 边坡防护中采用预应力高强钢筋锚杆，使结构与地 4)施工所需钻孔孔径小，不用...