| 井喷失控条件下盐岩储库稳定性分析 |
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| 引用本文： | 马林建,刘新宇,许宏发,杨石刚,王子甲.井喷失控条件下盐岩储库稳定性分析[J].岩土力学,2011,32(9):2791-2797. |
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| 作者姓名： | 马林建 刘新宇 许宏发 杨石刚 王子甲 |
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| 作者单位： | 解放军理工大学 工程兵工程学院，南京 210007 |
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| 基金项目： | 国家973计划资助项目(No.2009CB724608) |
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| 摘 要： | 井喷压力失控是盐岩储气库运营的极端情况。根据一维绝热管流理论解析得到井喷情形下储库卸压规律。在此基础上结合金坛盐矿工程地质条件，模拟对比分析了不同初始内压失控工况下盐岩储库应力状态、变形收敛特征和损伤破坏规律。结果表明，溶腔硬夹层总是先于盐岩体而屈服形成明显的屈服带，失控卸压阶段塑性区逐渐扩展布满整个腔体并向径向延伸6～8 m；运营压力范围内初始内压越低，储库卸压收敛越大，7 MPa下储库体积损失达5.02%；卸压阶段溶腔内壁围岩应变速率跃升至10-2 s-1数量级，属于准静态范畴。研究认为，井喷失控状态下失控初始内压是维持储库腔体稳定性的关键因素，在极端灾害环境中应确保盐岩储库处于较高的运营压力之下
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| 关 键 词： | 盐岩储气库 压力失控 稳定性 数值模拟 |
| 收稿时间： | 2010-09-30 |
Stability analysis of salt rock gas storage cavern under uncontrolled blowout |
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| MA Lin-jian,LIU Xin-yu,XU Hong-fa,YANG Shi-gang,WANG Zi-jia.Stability analysis of salt rock gas storage cavern under uncontrolled blowout[J].Rock and Soil Mechanics,2011,32(9):2791-2797. |
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| Authors: | MA Lin-jian LIU Xin-yu XU Hong-fa YANG Shi-gang WANG Zi-jia |
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| Institution: | Engineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, China |
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| Abstract: | Uncontrolled blowout is a kind of extreme condition for gas storage cavern operation.Based on one-dimensional insulation flow theory,the analytical solution of pressure drop for salt cavern under blowout is obtained.The stress state,the deformation characteristics and the damage zone evolvement of the gas storage cavern are simulated and studied under three different operating modes,combining with the geological data of Jintan salt deposit.It is shown that the hard interlayers tend to failure before rock sa... |
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| Keywords: | salt rock gas storage cavern runaway pressure stability numerical simulation |
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