灌注桩钢筋笼的充电电场特征研究  

Charging electric field characteristics of reinforcement cage in cast-in-situ pile

作　　者：董平[1] 潘卫育[2] 赵玮[2] 陈征宙[1] 高新南[1] 樊敬亮[1] 

机构地区：[1]南京大学地球科学系,南京210093 [2]江苏省交通厅,南京210004

出　　处：《地球物理学进展》2007年第2期652-656,共5页Progress in Geophysics

基　　金：江苏省交通科学研究计划项目(05Y015)资助

摘　　要：充电法是用于良导电矿体勘探的传统方法.利用良导椭球体的充电电场特征,结合模型桩试验,分析了灌注桩中钢筋笼周围的充电电场特征.结果表明在钢筋笼底边缘附近,电位曲线急剧下降,出现明显拐点,梯度曲线相应出现极小值.研究成果为检测灌注桩钢筋笼长度提供了理论依据.The ‘mise-a-la-masse＇ method, mainly used in exploring ore body of good conductivity of electricity, is a traditional exploration method. Based on the electric field characteristics of ellipsoid and the results of model piles testing, the electric field characteristics of reinforcement cage in cast-in-situ pile were analyzed. The results indicate that at the bottom of reinforcement cage, a sharp decline with an inflexion is on the electric potential curve and an extremum is accordingly on the potential gradient curve. It provides a basis for the length detection of reinforcement cage in cast-in-situ pile.

关 键 词：充电法 电场 电位 电位梯度 钢筋笼 

分 类 号：P631[天文地球—地质矿产勘探]