低应变反射波法在矿山桩基岩土工程勘察中的应用

与工程实例相结合,把低应变反射波法应用到了桩基勘察中,针对检测波形信号的识别和判断方法进行了分析研究。阐述低应变反射波法桩基检测的基本原理,设计测试系统,择取传感器和激振点的位置,同时提出消除桩顶横波干扰的方法。通过对工程现场数据的采集、分析与处理,对桩基的质量进行了判定,并对施工现场的施工准备工作及现场操作给出了合理化建议,结果证明,低应变反射波法拥很高的精确性,具有很好的应用前景,这对更好的指导矿山桩基岩土工程勘察与施工工作起着非常重要的作用。

The application of low-strain reflected wave method in mines pile foundation of geotechnical engineering investigation

Combined with the engineering example, the low strain reflected wave method is applied to the pile foundation survey, and the identification and judgment method of the detection waveform signal are analyzed and studied. This paper describes the basic principle of low - strain reflected wave method for pile foundation detection, designs the test system, selects the position of the sensor and the excitation point, and puts forward the method of eliminating the shear wave interference at the top of the pile. Through the collection, analysis and processing of the engineering site data, the quality of the pile foundation is determined, and the rationale for the construction work and the site operation of the construction site is given. The results show that the low strain reflection wave method is very high Accuracy, has a very good application prospects, which is better to guide the mine pile geotechnical exploration and construction work plays a very important role.