摘要
根据地震波在一维层状介质中的传播理论，振波遇到溶洞时将产生与入射波相位相同的反射。而振波有无同相反射及反射波的强度和到达时间，可以判定以石灰岩为持力层的挖孔桩是否存在溶洞及其位置。对４００多条挖孔桩的检测，并经钻探，人工开挖所证明该方法能快速、准确、经济检验挖孔桩的持力层。
According to the theory of propagation of seismic wave in one-dimensional bedded medium, vibration wave may cause a reflection similar to that of the phase of incident wave on the condition of presence of karst cave. On the basis of the similar reflection of vibration wave and the strength and the coming time of reflected wave, the karst cave and its position of the e-#O xcavated hole pile on the condition of the holding power layer of limestone may be discriminated. According to detecting more 400 excavated hole piles and through drilling or hand-excavating, it is proved that this method is high-speed, accurate and economic for the acceptance of the holding power layer of excavated hole piles.
出处
《桂林工学院学报》
1997年第1期70-73,共4页
Journal of Guilin University of Technology
关键词
挖孔桩
地震波动力分析
持力层检验
岩溶地区
Karst
excavated hole pile
dynamic analysis of seismic wave
acceptance of holding power layer.
