高陡不稳定路堑边坡加固技术探讨-《高速铁路技术》

文章信息/Info

Title:: Discussion on Reinforcement Technology of High and Steep Unstable Cutting Slope

Author(s):: GONG Jianhui; China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China

Keywords:: railway|high and steep natural slope|cutting|reinforcement technology

摘要:: 高陡边坡岩土体的失稳对铁路安全运营影响极大，亟需研究一种合理的高陡不稳定路堑边坡的加固措施。本文结合川藏铁路拉萨至林芝段的建设，提出了一种综合运用矩形桩、钻孔桩（圆桩）、纵梁及横梁的新型框架结构，并以该结构加固雅鲁藏布江沿岸某高陡不稳定边坡路堑，结果表明新型框架结构不仅能有效解决侧边坡覆盖层稳定性控制问题，还能消除高陡危岩落石的砸打威胁。研究成果可为川藏铁路雅安至林芝高陡自然边坡的加固设计提供参考。

Abstract:: The instability of rock and soil mass of high and steep slope has a great influence on the safe operation of railway, so it is urgent to study a reasonable reinforcement measure for high and steep unstable cutting slope. Combine with the construction of Lhasa-Nyingchi section of Sichuan-Tibet railway, this paper presents a new type of frame structure with rectangular piles, bored piles (round pile), longitudinal beams and cross beams to reinforce a high and steep unstable slope cutting along the Yarlung Zangbo River. The results show that the new frame structure can not only effectively solve the stability control problem of the side slope overburden, but also eliminate the threat from high and steep rock falling rocks, and can also provide reference for the reinforcement design of the high and steep natural slopes in Ya’an-Nyingchi section of Sichuan-Tibet railway.