大兴安岭林区冲击钻孔桩施工常见事故分析  

ANALYSIS OF COMMON ACCIDENTS IN CONSTRUCTION OF IMPACT BORED PILE IN DAXING'ANLING FOREST REGION

作　　者：王旭[1] 刘志新 肖翠斌 

机构地区：[1]东北林业大学,林业部大兴安岭筑路工程局,黑龙江省松花江林管局

出　　处：《东北林业大学学报》1995年第2期148-152,共5页Journal of Northeast Forestry University

摘　　要：大兴安岭林区桥梁基础普遍采用冲击钻孔桩．施工中易发生坍孔、卡钻、梅花孔、桩身出现夹泥层等事故。造成事故的原因主要是由护筒埋置深度不够、护壁泥浆的粘度小、钻锥冲击施工工艺等方面不符合施工规范要求，及施钻工作人员技术水平不高．和突发的停电与机械故障所致。文内给出了实际工程发生事故的分析例。The impact bored piles are generally used in bridge basis in Daxing'anling forest region. Hole collapse.get stuck.quincunial hole.pile shaft occuring intercalation and some other accidents happen easily during construction. The main reasons that caused these accidents are that fender barrel embedment.Facing slurry,unrational construction standards and demends in technology of impact construction of boring bit.low-levelled skill of constructors.unexpected power failure and the breakdown of the machines.The paper analysed the accidents.happened in practical engineering.

关 键 词：冲击钻孔桩 事故 防治 桥梁 

分 类 号：U445.551[建筑科学—桥梁与隧道工程]