戈壁地区高速铁路路基边坡防护措施研究

Study on Slope Protection Measures for Subgrade of High-speed Railway in Gobi Region

兰新铁路第二双线穿越新疆戈壁地区著名的四大风区,为防止路基边坡遭受戈壁风沙流吹蚀以及雨水冲蚀破坏,在线路所经戈壁地区设立三处路基边坡试验工点,选用了七种边坡防护措施,分别从防护效果、技术经济等角度对试验段各种边坡防护措施进行研究。研究结果表明:全线路堤边坡防护中,若边坡高度H<3 m时,边坡坡面宜采用混凝土空心砖防护;边坡高度H≥3 m时,边坡坡面宜采用拱形骨架护坡,骨架内铺设混凝土空心砖进行防护。

The Second Double Line of Lanzhou-Xinjiang Railway crosses the well-known four wind areas in Gobi region, Xinjiang. To prevent subgrade slope from erosion caused by wind-sand flow and rain water there, there are three test points on the slope along the line are set with seven varieties of slope protection measures used and, from the perspective of protection result, technology and economics, these measures are studied.The result shows that with regard to the protection along the whole line, the slope surface shall be protected appropriately by, in case of the slope height less than 3m, hollow concrete brick, and in case of the slope height more than or equal to 3m, arch skeleton, i.e. laying hollow concrete brick in the skeleton.