【摘要】 在龙羊峡电站区域构造稳定性问题的研究工作中,我们从分析已有的区域调查和历史地震资料人手,在活断层和古地震现象现场调研的基础上,建立了该区现今应力-形变场的模式,然后通过物理和数学模拟研究,验证了该模式的正确性并取得了定量关系和数据。有效地解决了该电站区域构造稳定性的评价问题。更多还原

【Abstract】 Since the completion of the construction of the cofferdams at the Longyang Gorge Hydroelectrical Power Station, a series of microseisms have occurred in the flood season every year near the reservoir-dam area. In order to clarify the development tendency of such earthqnakes as well as their possible effects on the hydro-electrical power station, investigations have been undertaken in recent years.Based on the data obtained from regional survey, historical earthquake records and field investigations on active faults and ancient earthquakes, a basic model for current geostress deformation field of the region has been constructed. This model has been testified providing a scientific basis for the final evaluation of the structural stability of the region.更多还原