摘要
大型地下水封石油洞库往往由多个洞室构成,在工程设计中洞室群之间的距离不仅影响洞室围岩的稳定性,同时还能够影响工程建设的经济性。目前大型地下水封石油洞库地下洞室群间距多是根据洞室截面尺寸和洞室围岩质量,按照工程经验来确定,缺乏合理的解释。通过数值分析,模拟实际工程地下洞室开挖过程,根据围岩的空间位移分析洞室群中洞室开挖对其相邻已开挖洞室围岩的影响,确定其影响距离,从而提出合理的洞室间距。数值分析以某地下水封洞库为例,分析8种不同洞室间距工况下两相邻洞室围岩变形变化规律及其相互影响,构建了大型地下水封石油洞库地下洞室围岩关键位置位移立方与洞室间距之间的关系,为该地下水封石油洞库设计提供了参考。
A large water-sealed underground oil cavern is often composed of many underground main chambers.The spacing between the main chambers in engineering design not only affects the stability of the surrounding rock masses,but also affects the economic efficiency of the engineering construction.At present,the spacing between the main chambers in large water-sealed underground oil cavern is mostly determined based on the cross-sectional size of the caverns and the quality of the surrounding rock masses,which is determined based on engineering experience,lacking a reasonable explanation.This paper simulates the excavation process of underground caverns of a real water-sealed underground oil cavern by numerical analysis method.Based on the spatial displacement analysis of the surrounding rock masses,the impact of excavation on the surrounding rock masses of adjacent excavated cavities in the cavern group is determined,and a reasonable spacing between cavities is proposed.Numerical analysis takes a real water-sealed underground oil cavern as an example to analyze the deformation and mutual influence of surrounding rock masses in two adjacent caverns under 8 different spacing conditions.The relationship between the cubic displacement at key points of the surrounding rock masses and the spacing between the caverns has been constructed,which can provide a basis for the design of the large water-sealed underground oil cavern.
作者
李俊彦
彭振华
王敬奎
王金昌
Li Junyan;Peng Zhenhua;Wang Jingkui;Wang Jinchang(CNOOC Petrochemical Engineering Co.,Ltd.,Jinan Shandong 250014,China)
出处
《山西建筑》
2024年第22期74-77,共4页
Shanxi Architecture
关键词
水封石油洞库
数值计算
洞室间距
围岩变形
water-sealed underground oil cavern
numerical method
spacing between the main chambers
deformation
