... is firstly observed in singular electromagnetic status during earthquake procedure (Warwick, 1982, Parrot, 1985, Fraser Simth, 1990, Adams, 1990). Singular electromagnetic phenomenon occurred during the recent big earthquake. The frequency of the electromagnetic VLF and ULF, and explanation...

... Abstract Mountainous tunnel portal section is one of the most easily damaged parts during strong earthquake. Failures of this part may block roads, which greatly influences the transportation of the local area after earthquake. Model tests on shaking table of tunnel portal section are carried...

... reduction method and utilization of finite difference soft ware (FLAC), a new embedded anti-slide pile anti-seismic design method was put up. Comparing the internal force value of pile before and after earthquake effects, the bigger value was adopted to be the value which is designed internal anti-seismic...

...ISRM-Sponsored International Symposium on Rock Mechanics: Rock Characterisation, Modelling and Engineering Design Methods ? ? ? ABSTRACT 5.12 Wenchuan Earthquake (Ms=8.0) triggered tens of thousands of geo-hazards throughout an area of about 100,000 km2 .The distribution of geo-hazards...

... Reservoir Characterization displacement Earthquake intake high rock slope Engineering counter-inclined bedded high slope displacement-time curve high rock slope Upstream Oil & Gas start letter rock slope investigation multi-point extensometer borehole instrument anchor cable...

... secondary geohazard key laboratory Reservoir Characterization basic characteristic Earthquake structural geology mud-rock flow strong earthquake Upstream Oil & Gas geomechanics characteristic Wenchuan Earthquake Geohazard disaster China Chinese Academy Development Trend...

...ISRM-Sponsored International Symposium on Rock Mechanics: Rock Characterisation, Modelling and Engineering Design Methods 1. INTRODUCTION A severe earthquake (30.986°N, 103.364°E, Depth=14km) , which measured 8.0 Ms, 8.3 Mw, according to Chinese Earthquake Administration (CEA), occurred at 14:28...

... underground structure Earthquake Reservoir Characterization lateral portal reservoir geomechanics displacement investigation Upstream Oil & Gas abutment Bridge rc continuous beam foundation span Pier Wenchuan Earthquake seismic damage great wenchuan earthquake gravity...

... metals & mining displacement Earthquake machine learning ground transportation optimum design rail transportation design plan production cost slope rock mass MPa Artificial Intelligence stability analysis analysis result rock mass mechanical parameter safety limit...

...ISRM-Sponsored International Symposium on Rock Mechanics: Rock Characterisation, Modelling and Engineering Design Methods Investigations on the active tectonics and surface ruptures of the Wenchuan Earthquake Li Yong State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu...

... Reservoir Characterization lower fault coupling relationship detection temperature field Upstream Oil & Gas anomaly strain field IRR temperature Modeling & Simulation tectonic activity variation Earthquake structural geology rock sample loading strain position fracture...

... rail transportation category score contribution concrete lining ground transportation Hayashi Earthquake Damage Pattern tunnel damage influence factor mid niigata prefecture earthquake geological condition tunnel hydraulic fracturing DAMAGE analysis quantification theory II...

... induced by earthquake are one of many secondary disasters of the earthquake. Historically, quake-induced lakes are common in mountain areas. These dams are formed by quick accumulations and usually unconsolidated, loose in structure, and likely to collapse due to seepage and erosion, resulting...