论岩质顺层边坡的稳定性与放坡坡率的关系
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摘要
在人类工程建设活动中,常常会开挖斜坡而形成许多顺层岩质边坡,对陡倾角边坡常采用顺层放坡处理是可行而经济的,而对中缓倾角的边坡当不能顺层放坡而采用陡于岩层倾角或潜在滑动面倾角放坡处理以提高边坡稳定性时,它是有适用条件的,与斜坡坡角及潜在滑动面倾角密切相关,文章就此问题进行了讨论。
During engineering construction it is common to form rock bedded slope in slope excavation.For the steep slope it is reasonable and economical to have bedded slope formation,but for slope with moderate dip angle in case of impossible bedded slope setting and the slope setting with dip angle steeper than that of rock bed or potential angle of sliding face for enhancing the slope stability,its suitability is related to slope angle and potential angle of sliding face.In this paper,this problem is discussed.
During engineering construction it is common to form rock bedded slope in slope excavation.For the steep slope it is reasonable and economical to have bedded slope formation,but for slope with moderate dip angle in case of impossible bedded slope setting and the slope setting with dip angle steeper than that of rock bed or potential angle of sliding face for enhancing the slope stability,its suitability is related to slope angle and potential angle of sliding face.In this paper,this problem is discussed.
引文
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[2]赵尚毅,郑颖人,时卫民,等.用有限元强度折减法求边坡稳定性安全系数[J].岩土工程党报,2002,24(3):343-346.(ZHAO Shangyi,ZHENG Yingren,SHI Weimin,et al.Determination of Safety Factorsfor Slope Stability by FE Strength Reduction Method[J].Journal of Rock Engineering,2002,24(3):343-346.(in Chinese))
[3]连镇营,韩国城,孔宪京.强度折减有限单元法研究开挖边坡的稳定性[J].岩土工程学报,2001,23(4):406-41.(LIAN Zhengying,HAN Guocheng,KongXianjiang.Study on Stability of the Slope Excavationby Strength Reduction Finite Element Method[J].Journal of Rock Engineering,2001,23(4):406-411.(in Chinese))
[4]陈秋南,张永兴,刘新荣,包太.连拱隧道的设计理论与动态施工力学研究[J].地下空间与工程党报,2005,(1):156-160.(CHEN Qiunan,ZHANGYongxing,LI U Xinrong,et al.Research on DesignTheory and dynamic Construction Mechanics forDouble-arch Highway Tunnel[J].Chinese Journal ofUnderground Space and Engineering,2005,(1):156-160.(in Chinese))
[5]李永靖,张向东.城市地铁开挖对地表建筑物影响研究[J].地下空间与工程学报,2006,(8),1326-1329.(LI Yongjing,Zhang Xiangdong.Research onInfluence of City Subway excavating on the SurfaceBuilding[J].Chinese Journal of Underground Spaceand Engineering,2006,(8):1326-1329.(in Chi-nese))
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