盐津变电所滑坡工程治理及FLAC3D数值模拟分析
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摘要
2005年5月,正在施工中的220 kV盐津变电所西南面挖方边坡,发生上部覆盖层顺基岩面滑动挤出,设计单位迅速采取了在滑坡前缘填土加载抗滑的临时应急措施,并在滑坡变形趋于稳定后采用锚杆抗滑桩进行永久性抗滑处理.同年7月,变电所北面填方斜坡向北临空面发生滑动,直接威胁到变电所的整体安全和110 kV出线终端塔的安全.针对该滑坡,采用了抗滑桩结合排水沟措施进行整治,并进行了三维数值仿真模拟,结果分析显示,填方边坡的抗滑治理措施是安全有效的.
In May 2005,when the southwest excavation slope of the 220 kV Yanjin Substation is under construction,the upper overburden sliding extrusion obey the bedrock surface,design units quickly take temporary emergency measures that fill in the front loading landslide against sliding;and use the anchor anti-slide pile as the permanent anti-slide treatment after landslide deformation has been stabilized in July the same year;the filling slope sliding to the north free surface on the north of the substation is a direct threat to the overall security of substation and security of 110 kV outlet line terminal tower,contraposing the governance of the landslide,anti-slide piles measures are used to improve the drains;and also a three-dimensional numerical simulation is used;the results show that fill governance measures against sliding slope are safe and effective.
In May 2005,when the southwest excavation slope of the 220 kV Yanjin Substation is under construction,the upper overburden sliding extrusion obey the bedrock surface,design units quickly take temporary emergency measures that fill in the front loading landslide against sliding;and use the anchor anti-slide pile as the permanent anti-slide treatment after landslide deformation has been stabilized in July the same year;the filling slope sliding to the north free surface on the north of the substation is a direct threat to the overall security of substation and security of 110 kV outlet line terminal tower,contraposing the governance of the landslide,anti-slide piles measures are used to improve the drains;and also a three-dimensional numerical simulation is used;the results show that fill governance measures against sliding slope are safe and effective.
引文
[1]常士骠.工程地质手册[M].第3版.北京:中国建筑工业出版社,1992:585-587.
[2]GB18306-2001,中国地震动参数区划图[S].
[3]Itasca Consulting Group Inc.Fast Lagrangian Analy-sis of Continua in 3 Di mensions[M],version 2.0,1997.
[2]GB18306-2001,中国地震动参数区划图[S].
[3]Itasca Consulting Group Inc.Fast Lagrangian Analy-sis of Continua in 3 Di mensions[M],version 2.0,1997.
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