预爆破法处理大直径嵌岩桩桩底倾斜岩面问题  

Using pre-blasting method to deal with the inclined rock surface of large diameter rock-socketed pile bottom

作　　者：肖伯强 李送根 陈培帅[2] 胡义新[1] 

机构地区：[1]中交第二航务工程局有限公司第六工程分公司,湖北武汉430014 [2]中交第二航务工程局有限公司,湖北武汉430040

出　　处：《中国港湾建设》2017年第11期17-20,共4页China Harbour Engineering

摘　　要：在地质构造复杂、不同岩层交叉发育的地区,钻孔桩施工过程中极易遭遇斜岩面,造成钻头出现偏锤现象,从而需要反复修孔才能保证桩基垂直度,严重影响施工工期。针对依托工程中大直径嵌岩桩大倾角高强度斜岩面地质情况,提出了预爆破纠偏的新方法,有效解决了施工困难,提高了施工工效。In the area of complex geological structure and cross-development of different rock formations, the inclined rock surface is easily encountered during the construction of bored pile, causing the drill hammer partial phenomenon, which requires repeated repair to ensure the vertical degree of the pile foundation, seriously affect the construction period. Based on a project in the large diameter rock-socketed pile inclination of high strength inclined borehole geological situation, we put forward a new method of pre -blasting rectification, which effectively solves the construction difficulties and improves the construction efficiency.

关 键 词：大直径嵌岩桩 高强度 斜岩面 预爆破 

分 类 号：U655.52[交通运输工程—港口、海岸及近海工程] U655.544.1[交通运输工程—船舶与海洋工程]