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强降雨高速公路红黏土高边坡稳定及加固研究

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为研究强降雨下高速公路红黏土高边坡稳定性,建立安全有效的加固防护措施,依托吉康高速改扩建项目某 7 级边坡工程,运用数值模拟的方法,量化分析了降雨强度与时长对红黏土高边坡稳定性的影响.结果表明:高边坡施工过程中自然稳定性较差,持续降雨易引起施工期边坡失稳,48 小时持续降雨480 mm/d时,边坡安全系数降低 20.7%,而框格锚杆加固能较好地约束边坡位移,保证暴雨状态下红黏土高边坡的安全稳定性.
Research on Stability and Strengthening Measures of Highway Red Clay High Slope under Heavy Rainfall
In order to study the stability of highway red clay high slope under heavy rainfall and establish safe and effective reinforcement and protection measures,this paper relies on a grade 7 slope project of Jikang high-speed reconstruction and expansion project,and uses numerical simulation method to quantify the influence of rainfall intensity and duration on the stability of red clay high slope.The results show that the natural stability of the high slope is poor during the construction process,and continuous rainfall is easy to cause the slope instability during the construction period.When the continuous rainfall is 480 mm/d for 48 hours,the safety factor of the slope is reduced by 20.7%,and the reinforcement of lattice anchor can better constrain the displacement of the slope and ensure the safety and stability of the red clay high slope under the condition of heavy rain.

red clay high slopeslope stabilitynumerical simulationslope reinforcementheavy rainfall

谢立松、吴波、刘聪、徐世祥

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东华理工大学 土木与建筑工程学院,江西 南昌 330013

红黏土高边坡 边坡稳定性 数值模拟 边坡加固 强降雨

国家自然科学基金项目江西省自然科学基金项目

5216805520224BAB204058

2024

河北地质大学学报
石家庄经济学院

河北地质大学学报

CHSSCD
影响因子:0.287
ISSN:1007-6875
年,卷(期):2024.47(5)
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