Dynamic Response of Gas Storage Cavern in Bedded Salt Rock to Earthquake

王贵君; 张岭; 刘存宽; 蔡盛鑫; 岂天晨

doi:10.13409/j.cnki.jdpme.2018.04.007

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Dynamic Response of Gas Storage Cavern in Bedded Salt Rock to Earthquake

更新时间：2025-12-11

- Dynamic Response of Gas Storage Cavern in Bedded Salt Rock to Earthquake
- Vol. 38, Issue 4, Pages: 642-648(2018)
- 作者机构：
- 作者简介：
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- DOI：10.13409/j.cnki.jdpme.2018.04.007
  CLC： E972
- Published：2018
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[1]王贵君,张岭,刘存宽,蔡盛鑫,岂天晨.地震作用下含泥岩夹层盐岩储气库的动态响应[J].防灾减灾工程学报,2018,38(04):642-648.

王贵君, 张岭, 刘存宽, et al. Dynamic Response of Gas Storage Cavern in Bedded Salt Rock to Earthquake[J]. 2018, 38(4): 642-648.
[1]王贵君,张岭,刘存宽,蔡盛鑫,岂天晨.地震作用下含泥岩夹层盐岩储气库的动态响应[J].防灾减灾工程学报,2018,38(04):642-648. DOI： 10.13409/j.cnki.jdpme.2018.04.007.

王贵君, 张岭, 刘存宽, et al. Dynamic Response of Gas Storage Cavern in Bedded Salt Rock to Earthquake[J]. 2018, 38(4): 642-648. DOI： 10.13409/j.cnki.jdpme.2018.04.007.

摘要

为探讨含泥岩夹层盐岩储气库的抗震稳定性

利用有限差分法软件FLAC3D

建立了深部盐岩储气库数值模型

研究了地震作用下含泥岩夹层盐岩储气库的动态响应

包括储气库围岩的应力状态变化

地震动幅值

变形特性和稳定性等。结果表明:在地震作用下

泥岩夹层及其附近盐岩中等效应力明显大于相邻部位

此处为抗震薄弱部位;储气库围岩地震动幅值较大

但向内空变形很小

呈现"整体运动"的特点;流变性盐岩塑性区变化不大

弹塑性泥岩夹层塑性区随地震加速度幅值增大而扩展;较高工作内压和围岩的联合约束作用

使地震作用下含泥岩夹层盐岩储气库可保持其整体稳定性。

Abstract

Seismic stability of gas storage is of interest in assessing the safety of storage cavern in bedded salt rock formation. In this paper

a numerical model of gas storage in deep salt rock interlayered with mudstone is established using the finite difference software FLAC

3 D

and the effects of seismic load on a gas storage cavern in bedded salt rock are investigated

including the changes of stress state in the surrounding rock of the cavern

the ground motion amplitude

the deformation characteristics

and the stability of the cavern. The results show that under the action of earthquake

the effective stress in the mudstone interlayers and the surrounding salt rock are significantly higher than that in the adjacent parts

indicating that t

he mudstone interlayers are prone to seismic activities. In addition

the cavern has large seismic amplitude but small convergence deformation

showing the characteristic of "global movement". Moreover

the variation of plastic zone in the creeping salt rock is not evident; the plastic zone in the elasto-plastic mudstone interlayers develops with the increase of the amplitude of seismic acceleration. The coupled confining effect of the high inner pressure of storage and the surrounding rock guarantees the overall stability of the gas storage cavern in bedded salt rock under the action of earthquake.

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references

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