基于机械成孔的抗滑桩技术研究及应用
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摘要
以肖家洼煤矿变电站东侧滑坡为研究对象,分析了滑坡形成机理,研究机械成孔抗滑桩技术并成功应用该技术,得出:肖家洼煤矿变电站东侧滑坡由上部粉土与下部粉质黏土交界处受渗水浸泡、软化,抗剪强度降低,诱发滑坡的形成;滑坡为推移式滑坡,滑坡体积约30 000 m3,中型滑坡;机械成孔抗滑桩施工设备占地小、简便、易操作,施工过程安全、高效;采用机械成孔抗滑桩治理后,滑坡累计变形量增加逐渐变缓,变形趋势收敛明显,滑坡变形得到有效控制,坡体稳定,效果明显。
The landslide on the east side of the substation in Xiaojiawa coal mine was studied, the mechanism of landslide formation was researched on. The mechanical hole-forming anti-slide pile technology was studied and applied successfully. The landslide on the east side of the substation in Xiaojiawa coal mine was formed by the junction of upper silt soil and lower silt clay, which was soaked and softened by seepage water, and the shear strength was reduced. The landslide was a sliding type,with a volume of about 30 000 m3. It was a medium landslide. The construction equipment of mechanical pore-forming anti-slide pile was small, simple, easy to operate, and the construction process was safe and efficient. After the mechanical hole-forming anti-slide pile was used, the accumulated deformation of landslide increased gradually and gradually became slow, and the deformation trend converged obviously. The landslide deformation was effectively controlled, and the slope was stable with obvious effect.
The landslide on the east side of the substation in Xiaojiawa coal mine was studied, the mechanism of landslide formation was researched on. The mechanical hole-forming anti-slide pile technology was studied and applied successfully. The landslide on the east side of the substation in Xiaojiawa coal mine was formed by the junction of upper silt soil and lower silt clay, which was soaked and softened by seepage water, and the shear strength was reduced. The landslide was a sliding type,with a volume of about 30 000 m3. It was a medium landslide. The construction equipment of mechanical pore-forming anti-slide pile was small, simple, easy to operate, and the construction process was safe and efficient. After the mechanical hole-forming anti-slide pile was used, the accumulated deformation of landslide increased gradually and gradually became slow, and the deformation trend converged obviously. The landslide deformation was effectively controlled, and the slope was stable with obvious effect.
引文
[1]刘金龙,王吉利,袁凡凡.不同布置方式对双排抗滑桩土拱效应的影响[J].中国科学院研究生院学报,2010,27(3):364-369.
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[9]郑颖人,时卫民,杨明成.不平衡推力法与Sarma法的讨论[J].岩石力学与工程学报,2004(17):3 030-3 036.
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[12]刘冬骁.秀罗海滑坡治理工程变形监测分析[J].长春工程学院学报：自然科学版，2016,17(1):45-48,52.
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[14]张华伟,王世梅,霍志涛,等.白家包滑坡变形监测分析[J].人民长江，2006(4):95-97.
[2]戴自航.抗滑桩滑坡推力和桩前滑体抗力分布规律的研究[J].岩石力学与工程学报,2002(4):517-521.
[3]杨明,姚令侃,王广军.抗滑桩宽度与桩间距对桩间土拱效应的影响研究[J].岩土工程学报,2007(10):1 477-1 482.
[4]王卓娟,李孝平.抗滑桩在滑坡治理中的研究现状与进展[J].灾害与防治工程,2007(1):45-50.
[5]司光武.矩形与圆形截面抗滑桩离心模型试验及颗粒流数值模拟研究[D].成都：西南交通大学,2017.
[6]刘以文.方形抗滑桩一桩两机成孔施工技术[J].科技创新与应用,2013(13):186.
[7]李清泉.非开挖式抗滑桩关键技术研究[D].北京：中国铁道科学研究院,2013.
[8]龚晓星,陈延伟,舒海明.西部某滑坡的治理及圆形抗滑桩的运用[J].福建交通科技,2015(3):6-8.
[9]郑颖人,时卫民,杨明成.不平衡推力法与Sarma法的讨论[J].岩石力学与工程学报,2004(17):3 030-3 036.
[10]夏艳华,白世伟.传递系数法在滑坡治理削坡方案设计中的应用[J].岩石力学与工程学报,2008(S1):3 281-3 285.
[11]陶志平,周德培,岳志勤.滑坡推力计算中传递系数法的改进研究[J].路基工程,2006(5):80-81.
[12]刘冬骁.秀罗海滑坡治理工程变形监测分析[J].长春工程学院学报：自然科学版，2016,17(1):45-48,52.
[13]杨秀元,李刚,王爱军,等.三峡水库区巫山县淌里滑坡监测与变形分析[J].中国地质灾害与防治学报，2008(1):22-27.
[14]张华伟,王世梅,霍志涛,等.白家包滑坡变形监测分析[J].人民长江，2006(4):95-97.
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