摘要
文章通过数值建模定量分析2015年4月15日内蒙古阿左旗Ms5.8地震后,乌海地震台体积式钻孔应变仪测值于2015年1月至4月破年变规律的走势。对影响体应变趋势的可能性因素"黄河海勃湾水利枢纽工程"和平整台站院落的加卸载影响,按地表荷载影响力学模型及岩层加载载荷形变机理进行计算。结果表明,"黄河海勃湾水利枢纽工程"水库蓄水引起的应变量接近体应变仪的实测应变量,水库蓄水对乌海台体应变的中短期趋势性异常变化具有较大影响。
The trend of annual variation of the volume borehole strain meter in Wuhai seismic station from January to April in 2015 is analyzed by quantitative numerical modeling after the Inner Mongolia Azuoqi Ms5.8earthquake on April 15,2015.Influences of the Yellow River Haibowan water control project and the loading and unloading during leveling yard of the station on body strain are calculated using mechanical model of surface load influenceand deformation mechanism of the rock load.The results show that the strain by the reservoir impoundmentof the Yellow River Haibowan water control project is near the measured value by body strain meter.Therefore,the reservoir impoundment has a great influence on the medium and short term trend anomaly of Wuhai body strain.
出处
《山西地震》
2017年第1期7-10,16,共5页
Earthquake Research in Shanxi
关键词
水库蓄水
体积式应变仪测值
载荷影响
Reservoir impoundment
Volume borehole strain meter
Load effect
