高速铁路红层软岩路基填筑技术研究

Embankment Filling on Red Soft Rock on High-speed Railway

红层软岩在我国分布十分广泛,但目前我国还缺乏在红层软岩路堤上铺设高速铁路的实践和经验。因此,有必要选择有代表性的地段作为试验工点,进行红层泥岩填筑路堤的研究。文中结合遂渝铁路红层软岩路基填筑的成功实践,详细阐述了红层软岩路基填筑处理方案和填筑方法,该方法填补了我国高速铁道红层软岩路基施工技术的空白,经对路基各断面左中右各一点上压实系数Kh进行检测,均符合规定要求,工后沉降和现场测试综合结果也均满足规定要求,为红层软岩地区修筑高速铁路提供了可借鉴的技术资料。

Though red soft rock is widely distributed in our country, we are lacking practical experience in laying highspeed rail on red soft rock embankment. Therefore, it is necessary to establish some experimental sites to launch studies on embankment filling on red soft rock in order that guidance is provided for construction in such conditions. Taking the successful practice of red soft rock embankment filling on Suining-Chongqing railway as a historical case, the paper describes in detail the processing scheme and filling method on the line. The method has filled the gap in construction techniques for red soft rock embankment filling on high-speed railway. Through checks on compacting factor Kh from various points on cross section of subgrade, all checks meet the target and the result of integrated field tests for post-con struction settlement satisfied the specifications, which provides reference data for laying high-speed rail in red soft rock areas.