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冰川冻土 ›› 1981, Vol. 3 ›› Issue (3): 53-57.

• 研究论文 • 上一篇    下一篇

大比例尺多年冻土含冰量图的编制原则

程国栋   

  1. 中国科学院兰州冰川冻土研究所
  • 收稿日期:1981-01-07 出版日期:1982-08-25 发布日期:2012-04-26

PRINCIPLE OF COMPILING ICE CONTENT MAPS AT LARGE SCALES

Cheng Guodong   

  1. Lanzhou Institute of Glaciology and Cryopedolody, Academia Sinica
  • Received:1981-01-07 Online:1982-08-25 Published:2012-04-26

摘要: 冻土的工程地质性质与普通土的工程地质性质有着本质上的差别,造成这种差别的根本原因是冻土中含有地下冰。对地下冰进行制图是冻土工程地质研究中最重要课题之一,在生产实践中也是十分必需的。但到目前为止,无论在国内还是国外,对多年冻土含冰量制图问题的研究仍是十分不够的。

Abstract: As required by the construction of Qinghai-Xizang asphalt highway, we had compiled an ice content map of permafrost along Qinghai-Xizang Highway (from Xieshui He to Tanggula Shan, about 420 km long). The mpa constists of a longtitudinal section map at the scale of 1 : 5000 and a plane map at the scale of 1:2000. This paper briefly relates the principle of compilating the maps.Permafrost is classified into five ice content types on the basis of its water content (according to percent of dry soil weight), and the thaw-settlement coefficients of each type for all the distinguished varieties are given for prediction of possible changes after construction. Based on the ice content type within the depth from o to 1 m below permafrost table, four kinds of road section are distinguished. Permafrost protective measures for each kind of section are also presented.