中国荒漠地区铁路防沙的新认识  

NEW KNOWLEDGES OF PREVENTING SAND HARMS ON RAILWAY IN CHINA

作　　者：冯连昌[1] 卢继清 陈文海 

机构地区：[1]铁道部科学研究院西北研究所

出　　处：《中国地质灾害与防治学报》1992年第1期17-22,共6页The Chinese Journal of Geological Hazard and Control

摘　　要：本文介绍了通过风沙机理和铁路沙害防治研究及工程实践所得出的关于中国铁路沙害防治的一些新认识、新观点,除具有学术意义外,并具有一定的实用价值。The railway lines in desert areas of China are over 3×103km. To meet the needs of e-conomic development, more railway lines in desert will be built in the future. Thus, the study of sand prevention on railwny is an urgent, arduous task and for long - term environmental transformation it has very important significance. Some new knowledges accumulated by the study of sand preventions in many years are emphatically introduced in this paper. They deal with the engineering properties of sand deposited by the wind, the prospecting, line -selecting and designing on railwey in desert area. Also some new points of forecast and prevention of sand harm on railway are introduced as follows:1. The sand harms on railway have obvious laws. The most effective method of forecasting the harms is the diagrams of the wind speed dynamic vector.2. In the moving dune area the checked sand hinder with straw is an effective measure, and the shelterbelt width (S) can be calculated by formula:3. The sand discharge can be calculated by:4. The experiment has proved that the dyke of the stopping and leading sands is an effective measure in the flat sand and Gebi areas.10. The herbs, bushes and local plants must be first used. 11. Based on the test results, it is reasonable to advocate the way of controlling sand by the raising seeding under the condition of sand covered by intermitence.12. The effect of any single countermeasure is not euough and that of the 'SSUESP' with stabilization, stopping, transporting, leading, covering, pulling and changing is more notable.

关 键 词：风积沙 移动沙丘 铁路防沙 草方格沙障 综合防治结构体系 先锋植物 

分 类 号：P694[天文地球—地质学]