潮间带低速层中高速埋伏岩体计算模式的建立

在某些沿海潮间带区域的低速层中常存在一定数量的巨大高速滚石埋伏岩体。这些埋伏岩体会给工程地质勘察带来很大的困难 ,甚至无法进行工程地质勘察。根据浅层折射波方法原理利用浅层折射波相遇时距曲线与折射波射线路径关系建立了求取浅层高速埋伏岩体的埋深及其厚度的计算模式 ,利用这些公式可以较准确地确定高速埋伏岩体的位置、埋深及其厚度 ,对工程地质勘察是十分有利的。

The Calculation for the High-Speed Mass of Rock Overlay by Low-Speed Medium In the Tidal Zone of the Shallow Sea

There are a number of high speed masses of rock close to the bedrock overlaid with a low speed layer of the Quaternary under the bottom of the shallow sea. They would make the engineering geologic survey very difficult in these areas and even impossible. However, it is sometimes very important to determine the location, the depth, the length and the thickness of the high speed masses of rock. According to the principle of seismic refraction method, the formulas of the depth and the thickness of the high speed masses of rock are established using seismic refraction wave reversed and unrepressed time distance curve and seismic refraction wave raypath theory in this paper. As long as the velocity of the medium and the refraction wave reversed and unrepressed time distance curve are known, we can obtain information about the high speed masses of rock.