本文關(guān)鍵詞： 靜水條件 振動(dòng)實(shí)驗(yàn) 均質(zhì)承壓含水層 測(cè)壓水位　出處：《地震學(xué)報(bào)》2017年03期 　論文類型：期刊論文

【摘要】：將自行設(shè)計(jì)的井-承壓含水層滲流系統(tǒng)置于地震模擬振動(dòng)臺(tái)之上,探究靜水條件下測(cè)壓水位的同震響應(yīng)特征.該實(shí)驗(yàn)含12組工況,加載頻率f_(in)分別為0.5,1,2,5,10,15 Hz和加速度ain分別為1.5,2.5m/s2的正弦波.研究結(jié)果表明:測(cè)壓水位呈現(xiàn)階升、階升—振蕩、振蕩和階降—振蕩等4種響應(yīng)變化形態(tài),與天然地震同震響應(yīng)井水位變化形態(tài)具有一定的相似性;12組工況中,測(cè)壓水位和孔隙水壓力在加載低頻(f_(in)=1,2 Hz)工況時(shí)均呈下降變化,中高頻(f_(in)=5,10Hz)時(shí)為上升變化,高頻(f_(in)=15Hz)時(shí)為振蕩變化,且加速度峰值也會(huì)影響二者的變化形態(tài);測(cè)壓水位和孔隙水壓力的變幅均隨輸入頻率的增大呈先增大后減小的變化規(guī)律,其最大變幅分別出現(xiàn)在ain=1.5m/s2,f_(in)=10 Hz和ain=2.5m/s2,f_(in)=5Hz兩種工況中.
[Abstract]:The self-designed well confined aquifer seepage system is placed on the shaking table of earthquake simulation, and the co-seismic response characteristics of the pressure level under static water condition are investigated. The experiment consists of 12 sets of working conditions. The loading frequency fapper is 0.5 / 1 / 2 / 1015 Hz and the acceleration ain is 1.5 / 2.5m / s ~ 2 respectively. The results show that the water level of pressure measurement shows four kinds of response patterns: step up, step up oscillation, oscillation and step down oscillation, etc. The results show that there are four kinds of response modes, such as step up, step up and step down oscillation, respectively, and the results show that the measured pressure level has four kinds of response patterns: step up, step up and oscillation. In 12 groups of working conditions, the pressure level and pore water pressure of natural earthquake response wells are similar to that of natural seismic response wells. The pressure level and pore water pressure decrease under the loading condition of low frequency / low frequency (FV) and increase at middle and high frequency (F / F) / 50 ~ (10) Hz / h ~ (-1), respectively, when the water level of the well is similar to that of the natural earthquake's co-seismic response well, and the variation of the pressure level and pore water pressure is similar. At high frequency, the oscillatory variation is observed, and the peak acceleration also affects the variation pattern of both, and the variation of the pressure level and pore water pressure increases first and then decreases with the increase of input frequency, and the variation of the pressure level and pore water pressure increases firstly with the increase of input frequency, and then decreases with the increase of input frequency. The maximum variation ranges are found in the two working conditions of 1.5 m / s ~ (2) / s ~ (2) C ~ (-1) S _ (2) S _ (2) S _ (2) C _ (1) and 2. 5 m / s ~ (2) / s ~ (2) / s ~ (2) / s ~ (
【作者單位】： 防災(zāi)科技學(xué)院;
【基金】：國(guó)家自然科學(xué)青年基金資助項(xiàng)目(41302198) 中國(guó)地震局地震科技星火計(jì)劃項(xiàng)目(XH16059) 黑龍江省水利科技項(xiàng)目(NGZL/KY04)聯(lián)合資助
【分類號(hào)】：P315.723

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