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冰川冻土 ›› 1985, Vol. 7 ›› Issue (1): 77-81.

• 研究论文 • 上一篇    下一篇

青藏公路线五道梁冻土层下限的确定

姜忠   

  1. 青海省地质局第一水文地质工程地质队
  • 收稿日期:1983-01-25 出版日期:1986-02-25 发布日期:2012-04-26

Determination of Lower Table of Permafrost in Wudaoliang, along the Qinghai-Xizang Highway

Jiang Zhong   

  1. The First Team of the H ydrological Geology and Engineering Geology, Qinghai Provincial Bureau of Geology
  • Received:1983-01-25 Online:1986-02-25 Published:2012-04-26

摘要: 五道梁位于青藏高原腹地的青藏公路线上,在可可西里山中的一个山间盆地边缘。地理坐标介于东经93°10′,与北纬35°16′的交汇处,海拔4600多米。据当地气象站资料,1971-1980年年平均气温为-5.4℃,气温极值最高达22.4℃,最低-33.1℃。年平均降水量为259.4毫米,蒸发量1421.4毫米,相对湿度57.6%,是多年冻土地区。 笔者有幸于1972年随钻机去五道梁打供水井,在打井过程中,进行了确定冻土层下限的工作。现将结果整理如下,供同行参考。

Abstract: Data in the bore hole at Wudaoliang indicated that 11 horizontal ice layers extensivly exist in the frozen soil at a depth of -0.70 to -30.43 m. In the process of drilling, temperature was taken twice at -80 m depth, one at 8 and other at 12 hours after cessation of drilling.Third temperature was taken at 160m depth at 190 hours after stop. Analysis of three measurements showed that the lower table of the frozen soil was somewhere between -68 and -70 m. At the same time, the temperature of circulatory water of the driller was measured,showing that above 69.96 m depth the temperature of ingoing water was higher than that of outgoing water,while below -70.76 m the outgoing was higher than the ingoing. The fact proved that the lower limit of the frozen soil between -69.96 and -70.76 m is somewhat correct.