井水位的振荡与地震波

VIBRATION OF WATER LEVEL IN WELL AND EARTHQUAKE WAVE

利用弹性理论和渗流理论研究了井水位振荡试验 ,给出了一种计算水井含水层频率特性参数 (固有振动周期和阻尼系数 )的新方法 ,对 5口水井进行SLUG试验 ,计算水井含水层的固有振动周期和阻尼系数 ,分析了水井对地震波响应的规律和内在联系。水井含水层系统对地震波的响应主要取决于水井含水层系统的固有振动周期和振动的阻尼系数 ,固有振动周期越是接近地震波—瑞利波的振动周期 2 0s ,振动的阻尼系数越小 ,它对地震波的响应越好 ,水井含水层系数的渗流特性越好 ,渗透系数越大 ,对水振动的阻尼系数越小 ,它对地震波的响应越好。

Vibration test of water level in well is studied by elastic and penetrative theories A new method to calculate frequency characteristic parameter of aquifer(natural vibration period and damping coefficient) has been given The natural period and damping coefficient in aquifer have been calculated by SLUG test in 5 wells The authors have analyzed influence patterns of well to earthquake wave and their inner links The influence of aquifer to earthquake wave depends on its natural period and damping coefficient When the natural period of aquifer is closer to vibration period 20s of Rayleigh wave the damping coefficient becomes smaller The response of aquifer to earthquake wave is better Better of the penetrative characteristics and bigger of the penetrative coefficient cause less influence to damping coefficient, and the response of earthquake wave is better