【摘要】：1962年3月19日新豐江水庫(kù)大壩附近發(fā)生MS 6.1級(jí)強(qiáng)烈地震后,13—17#壩段在108.5m高程處出現(xiàn)了長(zhǎng)達(dá)82m的貫穿裂縫,導(dǎo)致水庫(kù)滲漏,其后雖進(jìn)行了加固處理,但經(jīng)過(guò)50多年的運(yùn)營(yíng),貫穿裂縫的現(xiàn)狀如何,備受各級(jí)政府及專(zhuān)家學(xué)者的關(guān)注。本文利用近些年大壩上的多次小震觀測(cè)記錄,通過(guò)對(duì)有無(wú)貫穿裂縫壩段的地震加速度時(shí)程傅氏譜及上下壩體傳遞函數(shù)的對(duì)比分析,對(duì)14#壩段的整體性和穩(wěn)定性進(jìn)行了系統(tǒng)研究。結(jié)果表明,到目前為止,大壩貫穿裂縫沒(méi)有明顯惡化,但整體性依然較差,仍然是大壩穩(wěn)定性的最大隱患。
[Abstract]:After the strong earthquake of MS M = 6.1 near the dam of Xinfengjiang Reservoir on March 19, 1962, the dam section of 13-17 # appeared as long as 82 m crack at 108.5 m elevation, which resulted in the leakage of the reservoir. After reinforcement treatment, the dam section was operated for more than 50 years. The current situation of penetrating cracks is concerned by governments at all levels and experts and scholars. Based on the observation records of several small earthquakes on the dam in recent years, this paper makes a systematic study on the integrity and stability of the dam section 14 # by comparing and analyzing the time-history Fourier spectrum of seismic acceleration and the transfer function of the upper and lower dam bodies. The results show that, up to now, there is no obvious deterioration of the dam through cracks, but the integrity is still poor, which is still the biggest hidden danger to the stability of the dam.
【作者單位】： 廣東省地震局;中國(guó)地震局地震監(jiān)測(cè)與減災(zāi)技術(shù)重點(diǎn)實(shí)驗(yàn)室;廣東省地震預(yù)警與重大工程安全診斷重點(diǎn)實(shí)驗(yàn)室;防災(zāi)科技學(xué)院;
【基金】：中國(guó)地震局地震監(jiān)測(cè)與減災(zāi)技術(shù)重點(diǎn)實(shí)驗(yàn)室、廣東省地震預(yù)警與重大工程安全診斷重點(diǎn)實(shí)驗(yàn)室建設(shè)項(xiàng)目(2011A060901006) 廣東省重大科技專(zhuān)項(xiàng)項(xiàng)目(2012A 080102008) 地震科技星火計(jì)劃(XH16031) 中央高�；究蒲袠I(yè)務(wù)費(fèi)(ZY20150312)共同資助
【分類(lèi)號(hào)】：TV698

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