基于低应变反射波法的矿山桩基岩土工程勘察研究

Research on Geotechnical Engineering Investigation of Mine Pile Foundation Based on Low Strain Reflected Wave Method

桩基缺陷作为影响矿山桩基岩土工程质量的主要因素,需要建立可靠的检测评价体系。以低应变反射波法为工具,构建反射波测试系统,利用该系统采集反射波信号,通过对比缺陷桩基与正常桩基的反射波信号特征,作为桩基缺陷情况判断依据。应用结果表明,低应变反射波法能够准确检测桩基的缺陷情况及类型,有助于工程修复和质量评价工作的开展。

As the main factor affecting the quality of mine pile foundation geotechnical engineering,pile foundation defects need to establish a reliable detection and evaluation system.Using the low-strain re⁃flected wave method as a tool,a reflected wave test system is constructed,and the reflected wave signal is collected by the system.By comparing the reflected wave signal characteristics of the defective pile founda⁃tion and the normal pile foundation,it is used as the basis for judging the defects of the pile foundation.The application results show that the low-strain reflected wave method can accurately detect the defects and types of pile foundations,which is helpful for the development of engineering repair and quality evalua⁃tion.