青藏铁路多年冻土勘察的物探方法选择及其应用效果

Geophysical Methods in the Exploration of Permafrost along the Qinghai-Tibet Railway: Selection and Application

在青藏铁路的建设过程中,多年冻土是一个关键问题,开展物探工作时,会遇到较非冻结区更为复杂和多变的勘测对象。论述了目前开展的各种物探方法的优劣,给出了利用综合物探方法勘察青藏铁路多年冻土的结果。实践证明,开展综合物探是勘探多年冻土的一种行之有效的方法。

Permafrost a key problem in the con-struction of the Qinghai-Tibet Railway. The geophysical exploration will meet more complex and changeable troubles in permafrost areas than in the frozen-free areas. Hence, the selection of rational working methods seems to be especially important. Based on a discussion on the strong and weak points of various currently applied geophysical techniques, an idea of integrated geophysical ex-ploration is suggested with some practical examples. Practice shows that the integrated geophysical exploration is an effective means in exploration of permafrost.