雅万高速铁路泥页岩路堑边坡工程对策研究

Study on Engineering Countermeasures for Shale Cutting Slope of Jakarta-Bandung High-speed Railway

雅万高速铁路沿线泥页岩具有强度低、膨胀性强的特点,在降雨及干湿循环作用下极易发生顺层破坏。本文研究提出了经验参数化设计方法,并结合当地研究成果及施工过程出现的边坡失稳案例,修正了不同风化程度的泥页岩及其软弱夹层的强度设计参数。在工程对策研究方面提出了坡体加固结合坡面覆盖的工程解决方案及设计计算方法。研究成果可用于强度较低或遇水强度显著降低的岩土边坡工程。

The shale along Jakarta-Bandung High-speed Railway, due to low strength and strong expansibility, is prone to bedding failure under the effect of rainfall and wetting-drying cycle. In this paper, an empirical parametric design method is proposed. Based on local research achievements, in combination with the slope instability cases existing during construction, the author corrected the strength design parameters of shales weathered differently and their weak intercalated layers. In terms of the study on engineering countermeasures, the author puts forward the “slope reinforcement + slope covering” engineering solution and design calculation method. This achievement can be applied in rock-soil slope projects the strength of which is low or significantly reduced in case of rainfall.