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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。
Wudaoliang is located on the Qinghai-Tibet Highway in the hinterland of the Qinghai-Tibet Plateau, on the edge of a mountain basin in the Hoh Xil Mountains. Its geographical coordinates are between 93 ° 10’E and 35 ° 16’N, with an elevation of more than 4,600 meters. According to the local weather station data, the annual average temperature in 1971-1980 -5.4 ℃, the extreme temperature up to 22.4 ℃, the lowest -33.1 ℃. The average annual rainfall of 259.4 mm, evaporation 1421.4 mm, relative humidity 57.6%, is permafrost regions. I was fortunate enough to go to Wudaoliang to supply water wells with a drilling rig in 1972. During the drilling operation, the work of determining the lower limit of permafrost was carried out. The results are now organized as follows, for peer reference.