| 我国大陆地下水封洞库库址区地应力场分布规律统计分析 |
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| 引用本文： | 王章琼,晏鄂川,鲁功达,高连通,张颀明,唐睿旋.我国大陆地下水封洞库库址区地应力场分布规律统计分析[J].岩土力学,2014,35(Z1):251-256. |
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| 作者姓名： | 王章琼 晏鄂川 鲁功达 高连通 张颀明 唐睿旋 |
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| 作者单位： | 中国地质大学(武汉) 工程学院，武汉 430074 |
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| 基金项目： | 北京市科学技术委员会重点资助项目(No.20090101-2803)；水封洞库围岩塑性松动圈与洞库稳定性研究项目资助(No.20090102-2796)。 |
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| 摘 要： | 收集我国大陆地区湛江、黄岛、烟台、惠州、锦州、大连等在建和已建的地下水封洞库工程区76组地应力测试数据,建立了我国地下水封洞库库址区水平主应力v?、垂直主应力H?及侧压比k随埋深的分布图,参照Hoek-Brown方法对地应力特征进行回归分析。结果表明,我国大陆地区地下水封洞库库址区浅部地应力总体上随埋深H增大而增大,垂直主应力v?与H线性关系良好,应力变化梯度略小于Hoek-Brown关系式中的0.027;最大主应力H?及最小水平主应力h?整体上随深度增大而线性增大,散点主要分布在一个倾斜的平行带内;(3)侧压比k在H<200 m范围内分布较为分散,在H>200 m范围内较为集中,且侧压比分布包络线位于Hoek-Brown包络线之内,与全球地应力分布规律较为接近。研究分析和总结了我国地下水封洞库库址区建库深度范围内地应力场分布规律,对我国石油(气)战略储备的规划布局、建设和发展具有一定参考价值。
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| 关 键 词： | 地下水封洞库 地应力 分布规律 回归分析 侧压比 |
| 收稿时间： | 2013-06-11 |
Statistical analysis of in-situ stress field for underground water-sealed storage cavern in Chinese mainland |
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| WANG Zhang-qiong
,
YAN E-chuan
,
LU Gong-da
,
GAO Lian-tong
,
ZHANG Qi-ming
,
TANG Rui-xuan.Statistical analysis of in-situ stress field for underground water-sealed storage cavern in Chinese mainland[J].Rock and Soil Mechanics,2014,35(Z1):251-256. |
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| Authors: | WANG Zhang-qiong YAN E-chuan LU Gong-da GAO Lian-tong ZHANG Qi-ming TANG Rui-xuan |
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| Institution: | Faculty of Engineering, China University of Geosciences, Wuhan 430074, China |
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| Abstract: | Through collecting 76 groups of the in-situ stress data in underground water-sealed storage cavern in Chinese mainland, including Zhanjiang, Huangdao, Yantai, Huizhou, Jinzhou, Dalian, the distribution of the vertical stress，the largest horizontal principal stress( ), the minimum horizontal principal stress( ) and the lateral pressure coefficient(k) varying with depth in Chinese mainland are established. Then the features of the in-situ stress are corresponding regression analysed refer to the analysis method of Hoek and Brown. The results indicate that: (1) The shallow in-situ stress in underground water-sealed storage cavern in Chinese mainland show increasing trend with the increase of depth, showed a good linear relationship with depth, and the stress gradient is a little less than 0.027, in Hoek-Brown relation. (2) and are increased with depth, scattered points are mainly distributed in an inclined parallel belt. (3) Lateral pressure ratio k is dispersed when depth is less than 200 m, and centralized when depth is more than 200 m, and the envelope curve of lateral pressure ratio is distributed between the maximum and minimum envelopes of Hoek-Brown curve; it is approach the global distribution law. Through above research, the distribution law of in-situ stress field in underground water-sealed storage cavern in Chinese mainland is analyzed and summarized; it can provide references to the planning, constructing and developing of petroleum (gas) strategic reserve in Chinese mainland. |
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| Keywords: | underground water-sealed storage cavern in-situ stress distribution rule regression analysis lateral pressure ratio |
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