岩石高边坡抗剪强度参数的确定方法
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摘要
在丽江至香格里拉铁路金沙江大桥的岩石边坡稳定性分析中,岩体的抗剪强度是对边坡进行稳定性评价和确定治理方案的前提。基于此,介绍了3种以室内岩石试验及现场工程地质调查为基础的抗剪强度估算的方法,并以金沙江大桥丽江岸边坡为例,对这3种方法的适用性进行了讨论分析,获得了合理、有效的力学参数。
In the stability analysis for the rock slope along Jinshajiang Bridge on Lijiang-Shangri-la Railway,the shearing strength of rock mass is the precondition for the slope stability evaluation and control scheme determination,based on which three methods estimating the shear strength depending on indoor rock test and field geotechnical investigation were introduced. Next, taking the slope along the bank of Lijiang at Jinshajiang Bridge as an example,the applicability of these three methods was discussed with the reasonable and effective mechanical parameter obtained.
In the stability analysis for the rock slope along Jinshajiang Bridge on Lijiang-Shangri-la Railway,the shearing strength of rock mass is the precondition for the slope stability evaluation and control scheme determination,based on which three methods estimating the shear strength depending on indoor rock test and field geotechnical investigation were introduced. Next, taking the slope along the bank of Lijiang at Jinshajiang Bridge as an example,the applicability of these three methods was discussed with the reasonable and effective mechanical parameter obtained.
引文
[1]中国地震局地壳应力研究所.新建丽江至香格里拉铁路工程场区活动断裂专题研究报告[R].北京.2009.
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[2]中铁二院工程集团有限责任公司.新建丽江至香格里拉铁路金沙江大桥初步设计勘察报告[R].成都.2011.
[3]林达明,尚彦军,孙福军,等.岩体强度估算方法研究及应用[J].岩土力学,2011,32(3):838-839.Lin D M,Shang Y J,Sun F J,et al.Study of strength assessment of rock mass and application[J].Rock and Soil Mechanics,2011,32(3):838-839.
[4]DL/T5353—2006水电水利工程边坡设计规范[S].北京:中国电力出版社,2006:70-75.DL/T5353—2006 Design specification for slope of hydropower and water conservancy project[S].Beijing:China Electric Power Press,2006:70-75.
[5]李建林.卸荷岩体力学[M].北京:中国水利水电出版社,2003.Li J L.Unloading Rock Mass Mechanics[M].Beijing:China Water&Power Press,2003.
[6]孙苗.岩体质量分级的程序设计及应用[D].西安:长安大学,2011:10-11.
[7]GB 50330—2002建筑边坡工程技术规范[S].北京:中国建筑工业出版社,2002:24-25.
[8]郑颖人,陈祖煜,王恭先,等.边坡与滑坡工程治理[M].北京:人民交通出版社,2007:291-292.Zheng Y R,Chen Z Y,Wang G X,et al.Engineering Treatment of Slope&Landslide[M].Beijing:China Communications Press,2007:291-292.
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