CAJ | 학술논문

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 vs、垂直主应力 Hs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 vs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 Hs及最小水平主应力 hs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。
수집아국대륙지구담강、황도、연태、혜주、금주、대련등재건화이건적지하수봉동고공정구76조지응력측시수거，건립료아국지하수봉동고고지구수평주응력 vs、수직주응력 Hs급측압비 k 수매심적분포도，삼조 Hoek-Brown 방법대지응력특정진행회귀분석。결과표명，아국대륙지구지하수봉동고고지구천부지응력총체상수매심 H 증대이증대，수직주응력 vs여 H 선성관계량호，응력변화제도략소우 Hoek-Brown 관계식중적0.027；최대주응력 Hs급최소수평주응력 hs정체상수심도증대이선성증대，산점주요분포재일개경사적평행대내；(3)측압비 k 재 H＜200 m 범위내분포교위분산，재 H ＞200 m 범위내교위집중，차측압비분포포락선위우 Hoek-Brown 포락선지내，여전구지응력분포규률교위접근。연구분석화총결료아국지하수봉동고고지구건고심도범위내지응력장분포규률，대아국석유（기）전략저비적규화포국、건설화발전구유일정삼고개치。
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( vs ), the minimum horizontal principal stress( Hs ) 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, vs showed a good linear relationship with depth, and the stress gradient is a little less than 0.027, in Hoek-Brown relation. (2) Hs and hs 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.