建筑物下土洞分布与塌陷松动范围的探测试验研究

On Probing of Distribution of Earth Caves and Range of Slump under Building

本文通过实例介绍了覆盖型岩溶区建筑物下隐伏土洞的探测原理与方法。采用在建筑物周边布置浅层地震测线，初步了解沿基岩面的岩溶发育以及土洞的分布状况，然后在建筑物内利用静力触探方法对地震探测结果进行验证，从而可以较精确地确定隐伏土洞的形态、分布、土洞内充填及塌陷松动范围与程度。

Principle and method for probing hidden earth caves under building in overlying karstic region are introduced herein through practical examples. The karst development and distribution of earth caves along the bed rock surface are understood by using seismic survey line surrounding the building. The results of seismic probing are then verified by static sounding conducted inside the buliding. The form, distribution of hidden earth caves, fillings in the earth caves, range and degree of slump may be accurately determined.