自进式中空注浆锚杆在大粒径砂卵石地层中的应用  

Application of Self-drilling Hollow Grouting Anchor in Large-diameter Sand and Gravel Strata

作　　者：郭鸿昌[1] 

机构地区：[1]北京长城贝尔芬格伯格建筑工程有限公司,北京100062

出　　处：《施工技术》2012年第S1期75-76,共2页Construction Technology

摘　　要：自进式中空锚杆是一种将钻孔、锚杆安装、注浆、锚固合为一体的锚杆,克服了普通锚杆诸如塌孔、无法插杆、注浆不饱满等难题,发挥了锚杆的支护作用,提高围岩承载能力和稳定性,能够保证复杂地层中的施工效率和施工质量。结合工程实例,介绍了自进式中空锚杆在大粒径砂卵石地层中的应用。The self-drilling hollow grouting anchor compounds holes drilling,anchor installation,grouting and anchoring.The disadvantages of common anchor are overcame such as holes collapsing and difficulties in drilling and grouting.Thus the anchors can be used as supports structure to improve the bearing capacity and stability of surrounding rocks and ensure the work efficiency and construction quality.Combining with actual project,the application of self-drilling hollow grouting anchor in large-diameter sand and gravel strata is introduced.

关 键 词：地下工程 地基处理 自进式中空注浆锚杆 砂卵石地层 

分 类 号：TU753[建筑科学—建筑技术科学]