CAJ | 학술논문

　　已有的地表调查和 GPS 位移测量、深部震源机制等研究结果表明，郯庐断裂山东段现今活动性表现为顺时针压扭性活动特征。为揭示郯庐（郯城-庐江）断裂带山东段地表和深部之间地壳浅表层日本大地震发生后的现今地应力状态和活动特征，在鲁东北部花岗岩地区开展了600 m 的钻探工程与地应力测量工作。钻探岩芯编录初步揭示地壳浅表层岩体结构特征，随深度系统的地应力测量结果表明，现今水平主应力起主导作用，易于断层走滑作用发生，且现今最大水平主应力方向为近东西向，反映出郯庐断裂带山东段现今活动特征为压性兼右旋走滑，与地表和深部已有研究成果相吻合。研究成果为郯庐断裂带山东段现今活动性研究补充了新的资料。
　　이유적지표조사화 GPS 위이측량、심부진원궤제등연구결과표명，담려단렬산동단현금활동성표현위순시침압뉴성활동특정。위게시담려（담성-려강）단렬대산동단지표화심부지간지각천표층일본대지진발생후적현금지응력상태화활동특정，재로동북부화강암지구개전료600 m 적찬탐공정여지응력측량공작。찬탐암심편록초보게시지각천표층암체결구특정，수심도계통적지응력측량결과표명，현금수평주응력기주도작용，역우단층주활작용발생，차현금최대수평주응력방향위근동서향，반영출담려단렬대산동단현금활동특정위압성겸우선주활，여지표화심부이유연구성과상문합。연구성과위담려단렬대산동단현금활동성연구보충료신적자료。
Analysis of earth surface displacement using GPS and deep focal mechanism show that present activity in the Shandong segment of Tan-Lu (Tancheng-Lujiang) fracture zone exhibit a clockwise compression-torsion characteristics in between the shallow earth crust and deep zone of the region after the 2008 Japan earthquake. Data was gathered from 25 in-situ stress sensors installed at varying intervals along the total depth of single 600 m borehole located inside a granite rich region at the northeast part of Shandong. Combined with in-situ stress data, core sampling of the structural features of shallow earth crust rock formations reveals that current horizontal principal stresses play a leading role in strike-slip fault activity. Moreover, measured maximum principle in-situ stress mechanics trend towards the east-west direction and reflects present compressive properties, with dextral slip activity, of the Shandong segment. Including pre-existing data of surface and subterranean experiments, this new data will allow us to open new research avenues for understanding the present active features of the Shandong segment of the Tan-Lu fracture belt.