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1. 发明公开

EP3147410A4 CONSTRUCTION METHOD AND STRUCTURE OF PRESSURE DISPERSING EXPANSION HEAD ANCHOR ROD 失效
标题翻译：施工过程和结构扩展DRUCKDISPERGIERENDEN HEAD锚杆
公开(公告)号：EP3147410A4
公开(公告)日：2017-04-12
申请号：EP15795723
申请日：2015-05-11
申请人： SUZHOU NG FOUND ENG CO LTD
发明人： ZHOU JIANMING , CHENG LIANGKUI , FAN HUIJU , DU MINGXIANG
IPC分类号： E02D5/74 , E02D5/80
CPC分类号： E02D5/74 , E02D5/808
摘要： The present invention relates to a construction method and a structure of a pressure-dispersion type bit expanded anchor, belonging to the technical field of soil drilling of fixed buildings. The construction method adopts a drill rod to cut-drill in a jet spouting way in soil to form a water-pressure jet spouting cut-drilling segment and a cement-paste-pressure jet spouting cut-drilling segment, and the cement-paste-pressure jet spouting cut-drilling segment has a length of 2-4m and the cross section thereof has a maximum inner diameter of 600-800mm. By the structure, the water-pressure jet spouting cut-drilling segment and the cement-paste-pressure jet spouting cut-drilling segment are formed, and cement soil in the cement-paste-pressure jet spouting cut-drilling segment gets hardened and encloses an anchor cable carrier and anchor cables. The cement-paste-pressure jet spouting cut-drilling segment formed by the construction method and the structure is short in length and large in the maximum cross section diameter, and the cement soil reserved in the cement-paste-pressure jet spouting cut-drilling segment has a high cement content. The cement-paste-pressure jet spouting cut-drilling segment has the advantages of high early cement soil hardening strength and a high anti-pulling bearing capability.

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