基于地震波反射法的盾構(gòu)施工超前地質(zhì)預(yù)報(bào)初探
發(fā)布時(shí)間:2018-01-29 10:54
本文關(guān)鍵詞: 盾構(gòu)施工 超前地質(zhì)預(yù)報(bào) 地震波反射法 正演模擬 出處:《隧道建設(shè)》2017年08期 論文類型:期刊論文
【摘要】:由于北京地鐵八號線三期工程六營門站—五福堂站盾構(gòu)段區(qū)間特殊的工程環(huán)境及工藝,使得傳統(tǒng)的預(yù)報(bào)方法難以開展實(shí)施。以盾構(gòu)刀盤切削震動(dòng)為震源,以地震波反射法為原理進(jìn)行地震波相位特性和振幅特性的解析,提出了基于地震波反射法的盾構(gòu)施工超前地質(zhì)預(yù)報(bào)方法,并進(jìn)行超前預(yù)報(bào)及跟蹤對比工作。現(xiàn)場試驗(yàn)表明:基于地震波反射法的盾構(gòu)施工超前地質(zhì)預(yù)報(bào)系統(tǒng)布設(shè)簡單、操作方便,且不影響作業(yè)面推進(jìn);基于地震波反射法的盾構(gòu)施工超前地質(zhì)預(yù)報(bào)系統(tǒng)能較好地反映地下介質(zhì)體的形狀與輪廓,圖像判譯結(jié)果基本與地質(zhì)資料吻合,與開挖跟蹤結(jié)果一致。
[Abstract]:Due to the special engineering environment and technology in the shield section of Liuyingmen station-Wufutang station of the third phase of Beijing Metro Line 8, the traditional forecasting method is difficult to carry out. Based on seismic wave reflection method, the phase and amplitude characteristics of seismic wave are analyzed, and the advanced geological prediction method for shield construction based on seismic wave reflection method is proposed. Field tests show that the advanced geological prediction system for shield construction based on seismic wave reflection method is simple, easy to operate and does not affect the operation surface. The advanced geological prediction system for shield construction based on seismic wave reflection method can well reflect the shape and contour of underground media body, and the result of image interpretation is basically consistent with geological data and the result of excavation tracking.
【作者單位】: 福州地鐵集團(tuán)有限公司;北京市市政工程研究院地下工程建設(shè)預(yù)報(bào)預(yù)警北京市重點(diǎn)實(shí)驗(yàn)室;
【分類號】:U452.11;U455.43
【正文快照】: 預(yù)報(bào)預(yù)警北京市重點(diǎn)實(shí)驗(yàn)室,北京100037)0引言我國已是世界上隧道修建規(guī)模和數(shù)量最大的國家[1],盾構(gòu)施工以其自動(dòng)化、效率高、成洞效果好等優(yōu)點(diǎn)得到廣泛的應(yīng)用[2]。隧道盾構(gòu)施工方法有一定的特殊性和復(fù)雜性,對不良地質(zhì)狀況非常敏感,如斷層、溶洞、破碎巖體等在施工擾動(dòng)下極有可
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