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为查明辽东半岛金州地震活动断裂带现今地应力状态和活动状况,在该断裂带北段熊岳城东侧开展了随深度系统地取心钻探和水压致裂地应力测量工作,完成了600m钻探深度范围内地应力测量试验27段和水平最大主应力方向测试5段.钻探岩心初步揭示了地壳浅表层的岩体结构特征;随深度系统的地应力测量结果表明,3个主应力关系为SV>SH>Sh,垂直应力起主导作用,易于正断作用发生;现今最大水平主应力方向为56°~81°NE,反映NNE走向的金州断裂带北段现今活动具有右行走滑特征.地应力测量结果揭示的金州断裂带正断兼右行走滑特征与已有的该区域研究成果相吻合,为其现今活动性研究补充了新的动力学数据.
In order to ascertain the present state of stress and activity of the Jinzha seismic activity fault zone in the Liaodong Peninsula, systematic drilling and hydraulic fracturing stress measurement along the depth east of Xiong Yuecheng were carried out to complete 600m drilling Depth area of the stress measurement test section 27 and the horizontal maximum principal stress direction test section 5. Drilling core preliminary revealed the crustal shallow surface of the rock mass structure characteristics; with the depth of the system of stress measurement results show that the relationship between the three principal stresses SV> SH> Sh, the vertical stress plays a leading role and the easiness of normal faulting occurs. The present maximum horizontal principal stress direction is 56 ° ~ 81 ° NE. Nowadays activities in the northern segment of the Jinzhou fault zone that reflect the NNE strike have the right-lateral strike slip characteristics. The measured results show that the normal and right-slip characteristics of the Jinzhou fault zone coincide with the existing research results in this region, providing new kinetic data for the present activity study.