论文信息 - FAULT PLANE SOLUTIONS OF ACOUSTIC EMISSION INDUCED BY PROGRESSIVE EXCAVATIONS OF AN UNDERGROUND POWERHOUSE - 字舞流文

FAULT PLANE SOLUTIONS OF ACOUSTIC EMISSION INDUCED BY PROGRESSIVE EXCAVATIONS OF AN UNDERGROUND POWERHOUSE

地下発電所空洞掘削時に周辺岩盤で発生する微小なAEを高感度で測定し, P波初動の放射形式からメカニズム解 (fault plane solution) を求めてAEの発振機構を調べた. その結果, AEの発生原因となった破壊面の方向や破壊時の主応力の作用方向は, 岩盤の卓越節理の方向, 空洞形状, 初期地圧と岩盤変位の測定結果と合理的に対応し, 地震や深部鉱山の山はね発生機構の解明に用いられているこの手法が, 比較的地下浅部の空洞の安定性評価にも適用できることがわかった.

Tsuyoshi Ishida | Tadashi Kanagawa | Yasuo Uchita | Masaru Urayama

[1] A. Hirn,et al. Triple junction and ridge hotspots: Earthquakes, faults, and volcanism in Afar, the Azores, and Iceland , 1993 .

[2] Masayasu Ohtsu,et al. AE observation in the pull-out process of shallow hook anchors , 1989 .

[3] N. Voulgaris,et al. Subcrustal microearthquake seismicity and fault plane solutions beneath the Hellenic Arc , 1993 .

[4] M. Stickney,et al. SEISMIC EVENTS WITH IMPLOSIONAL FOCAL MECHANISMS IN THE COEUR D'ALENE MINING DISTRICT, NORTHERN IDAHO , 1993 .

[5] S. Gibowicz,et al. The mechanism of seismic events induced by mining , 1990 .

[6] C. B. Scruby,et al. Characterisation of fatigue crack extension by quantitative acoustic emission , 1985, International Journal of Fracture.

[7] W. Ellsworth,et al. Seismotectonics of the San Andreas Fault System Between Point Arena and Cape Mendocino in Northern California' Implications for the Development and Evolution of a Young Transform , 1993 .

[8] Masayasu Ohtsu,et al. Simplified moment tensor analysis and unified decomposition of acoustic emission source: Application to in situ hydrofracturing test , 1991 .

[9] N. Yamakawa. Stress Fields in Focal Regions , 1971 .

[10] R. Paul Young,et al. Moment tensor inversion of induced microseisnmic events: Evidence of non-shear failures in the -4 < M < -2 moment magnitude range , 1992 .