Simulation Study on Influencing Factors of Slope Safety in Highway Dump
赵胜利ZHAO Sheng-li
（中信建设有限责任公司,北京100027)
( CITIC Construction Co., Ltd.,Beijing 100027,China )
摘要:以某高速公路弃土场为研究对象,开展不同弃土容重、粘聚力及内摩擦角对弃土场安全系数影响规律研究。研究表明:弃土场安全系数受弃土容重、粘聚力以及内摩擦角影响显著,弃土场安全系数随弃土容重增加而降低,随粘聚力及内摩擦角的增大而增大.弃土容重增加到1.34倍,对应安全系数降低5.94%.弃土粘聚力增加2.15倍,其安全系数增加1.19倍.弃土内摩擦角增加1.5倍,其安全系数增加1.43倍。严格控制弃土工程参数是保障弃土场安全稳定的必要措施。
Abstract: A study was conducted on the impact of different soil bulk densities, cohesive forces, and internal friction angles on thesafety coefficient of a certain highway spoil ground. Research has shown that the safety factor of spoil ground is significantly affcted by thebulk density, cohesion, and intermal friction angle of the spoil. The safety factor of the spoil ground decreases with the increase of the bulkdensity of the spoil, but increases with the increase of cohesion and internal friction angle. The safety factor of the spoil ground decreaseswith the increase of the bulk density of the spoil, but increases with the increase of cohesion and intemal friction angle. The bulk density ofabandoned soil increased to 1.34 times，resulting in a corresponding safety factor reduction of 5.94%. The cohesion of abandoned soilincreased by 2.15 times, and the safety factor increased by 1.19 times. The increase in intermal friction angle of abandoned soil by 1.5 timesincreases its safety factor by 1.43 times. The increase in intemal friction angle of abanmdoned soil by 1.5 times increases its safety factor by1.43 times. Strict control of soil engineering parameters is a necessary measure to ensure the safety and stability of spoil ground.
关键词:弃土场;安全系数;容重;粘聚力;内摩擦角
Key words: dump; safety factor; bulk density; cohesion; internal friction angle
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