地下硐室开挖过程的数值模拟分析
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摘要
针对地下硐室洞顶土层自稳能力差,开挖初期变形增长较快,极易产生坍塌的特征,本文主要是利用了有限元数值模拟软件,对地下硐室的开挖过程进行了模拟分析,其中分析的主要内容为,由于地下硐室开挖过程的施工,引起的周围土体所产生的应变、应力、屈服区以及位移等,得出较为合理的施工工序与施工方法,从而指导工程施工。
In view of the poor self-stability of the top layer of the underground cavity, the deformation at the initial stage of excavation grows rapidly and is prone to collapse. This paper mainly uses the finite element numerical simulation software to carry out the simulation analysis of the excavation process of the underground cavity. The main content of the analysis is to gain the reasonable construction procedures and construction methods due to the strain, stress, yielding area and displacement of the surrounding soil caused by the construction of the underground cavity excavation process, thereby guiding the construction of the project.
In view of the poor self-stability of the top layer of the underground cavity, the deformation at the initial stage of excavation grows rapidly and is prone to collapse. This paper mainly uses the finite element numerical simulation software to carry out the simulation analysis of the excavation process of the underground cavity. The main content of the analysis is to gain the reasonable construction procedures and construction methods due to the strain, stress, yielding area and displacement of the surrounding soil caused by the construction of the underground cavity excavation process, thereby guiding the construction of the project.
引文
[1]高大钊,袁聚云.土质学与土力学[M].北京:人民交通出版社,2001.
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[3]金学洋,李宗利.浅埋黄土隧洞施工过程数值模拟[J].西北农林科技大学学报(自然科学版),2009.
[4]俞琳.软岩隧道开挖与支护数值分析[D].大连:大连理工大学,2003.
[5]于学馥,郑颖人,刘怀昌,等.地下工程围岩稳定分析[M].北京:煤炭工业出版社,1983.
[2]张向东,周军霞,单春雨.ADINA在隧道开挖中的数值模拟应用[J].科学技术与工程,2007(17):4398-4402.
[3]金学洋,李宗利.浅埋黄土隧洞施工过程数值模拟[J].西北农林科技大学学报(自然科学版),2009.
[4]俞琳.软岩隧道开挖与支护数值分析[D].大连:大连理工大学,2003.
[5]于学馥,郑颖人,刘怀昌,等.地下工程围岩稳定分析[M].北京:煤炭工业出版社,1983.