山区铁路路堑边坡滑塌整治技术研究

山区铁路路堑边坡常出现滑塌现象,为保证铁路运营安全,需及时采取整治措施。本文以某铁路滑塌路堑边坡为例,根据现场调查、地质水文资料,结合数值模拟结果剖析路堑边坡稳定性及滑塌机制,并对引起边坡滑塌的因素制定针对性整治措施。结果表明:连续降雨以及长期排水不畅会导致地层性质减弱、滑动面下移,将诱发加固边坡发生二次滑塌;为减少对既有边坡防护的扰动破坏,对二次垮塌边坡挡护进行合理加固补强亦可满足边坡稳定要求。

Research on Sliding Collapse Treatment Technology of Railway Cutting Slope in Mountainous Area

The subgrade slopes of railway in mountainous area often collapse.In order to ensure the safety of the railway,it is necessary to take timely remedial measures.This paper took a sliding collapse as an example.Based on field surveys,geological and hydrological data,combined with numerical simulations,the stability of the subgrade slopes and the mechanisms for the landslide were analyzed.And then,the landslide slope remediation measures were formulated according to the factors that caused the slope landslide.The results show that continuous rainfall and long-term poor drainage will lead to the weakening of stratum properties and the downward movement of the sliding surface,which will induce the reinforced slope to collapse again.In order to reduce the disturbance damage to the existing slope protection,appropriate and reasonable reinforcement of the retaining wall for the collapsed slope can also meet the requirements of slope stability.