莊河隧道監(jiān)控量測及超前地質(zhì)預(yù)報的應(yīng)用
發(fā)布時間：2019-07-01 18:14
【摘要】：我國交通建設(shè)近些年來飛速發(fā)展,對隧道工程建設(shè)的投入隨之加大,可是在隧道施工過程中,地質(zhì)狀況復(fù)雜多變,在隧道開挖過程中會引發(fā)多種地質(zhì)災(zāi)害,這些具有隱蔽性、復(fù)雜性和突發(fā)性,各種不良地質(zhì)災(zāi)害會導(dǎo)致很多工程事故的發(fā)生。通過對隧道監(jiān)控量測和超前地質(zhì)預(yù)報文獻(xiàn)資料的研究,本文簡要介紹了隧道監(jiān)控量測中的必測項目和選測項目的數(shù)據(jù)采集所需的設(shè)備及方法,并且對目前隧道超前地質(zhì)預(yù)報的一些方法進(jìn)行了介紹。本文以莊河隧道第三方監(jiān)控量測項目為依托,在莊河隧道的施工過程中實施了監(jiān)控量測,進(jìn)行了必測項目中的拱頂下沉量測、凈空收斂量測及淺埋地表沉降量測。選取莊河隧道左線ZK1+120斷面對量測數(shù)據(jù)使用EXCEL進(jìn)行回歸分析,得出相應(yīng)的回歸曲線,并且用此回歸曲線對該隧道同類圍巖開挖后的穩(wěn)定時間和最終位移值進(jìn)行預(yù)測,確定二次襯砌施作的時間,更好地指導(dǎo)隧道能夠安全施工。本文較為詳細(xì)的介紹了TST法和MALA地質(zhì)雷達(dá)法超前地質(zhì)預(yù)報的原理、數(shù)據(jù)的采集、數(shù)據(jù)的處理以及在莊河隧道超前地質(zhì)預(yù)報工作中的應(yīng)用。TST法對軟弱構(gòu)造帶、斷層、溶洞、破碎帶等不良地質(zhì)體的預(yù)報效果較好；MALA地質(zhì)雷達(dá)法對地質(zhì)體的介電常數(shù)、電導(dǎo)率的差異反映敏感,能夠較為準(zhǔn)確的探測和預(yù)報前方圍巖的富水區(qū)段和破碎圍巖的位置。莊河隧道超前地質(zhì)預(yù)報采用了長距離(TST法)與短距離(MALA地質(zhì)雷達(dá)法)預(yù)報方法相結(jié)合的方式,利用超前地質(zhì)預(yù)報數(shù)據(jù)處理后得出的結(jié)果與隧道實際開挖結(jié)果進(jìn)行對比,在隧道施工過程中超前地質(zhì)預(yù)報的結(jié)果與實際開挖的結(jié)果基本一致,并且為隧道左線ZK1+195-ZK1+240的地勘資料做了補(bǔ)充。通過超前預(yù)報得到了莊河隧道圍巖的完整性、節(jié)理裂隙發(fā)育程度及含水層等典型不良地質(zhì)的響應(yīng)特征,進(jìn)而提高了莊河隧道施工后期的超前地質(zhì)預(yù)報工作的準(zhǔn)確率,為施工方提前采取相應(yīng)支護(hù)措施提供了準(zhǔn)確的依據(jù),確保了莊河隧道的施工安全,為以后其他類似項目提供了一定的參考價值。
[Abstract]:With the rapid development of traffic construction in China in recent years, the investment in tunnel construction has increased, but in the process of tunnel construction, the geological conditions are complex and changeable, which will lead to a variety of geological disasters in the process of tunnel excavation, which have concealment, complexity and sudden, and all kinds of bad geological disasters will lead to the occurrence of many engineering accidents. Based on the study of tunnel monitoring measurement and advanced geological prediction literature, this paper briefly introduces the equipment and methods needed for data acquisition of necessary and selected items in tunnel monitoring and measurement, and introduces some methods of tunnel advanced geological prediction at present. In this paper, based on the third party monitoring and measurement project of Zhuanghe Tunnel, the monitoring and measurement are carried out in the construction process of Zhuanghe Tunnel, and the arch roof subsidence measurement, clearance space convergence measurement and shallow buried surface settlement measurement in the required project are carried out. The ZK1 120 measurement data of the left line of Zhuanghe Tunnel are selected for regression analysis with EXCEL, and the corresponding regression curve is obtained, and the stability time and final displacement value of the same kind of surrounding rock of the tunnel are predicted by this regression curve, and the time of secondary lining is determined, which can better guide the safe construction of the tunnel. This paper introduces in detail the principle of TST method and MALA geological radar method in advance geological prediction, data collection, data processing and its application in advance geological prediction of Zhuanghe Tunnel. TST method has good prediction effect on weak structural zone, fault, caverns, broken zone and other bad geological bodies. MALA geological radar method is sensitive to the difference of dielectric constant and conductivity of geological bodies, and can accurately detect and predict the location of rich water area and broken surrounding rock in front of the surrounding rock. The advance geological prediction of Zhuanghe tunnel adopts the combination of long distance (TST method) and short distance (MALA geological radar method) prediction method. The results obtained from advanced geological prediction data processing are compared with the actual excavation results. The results of advanced geological prediction in the process of tunnel construction are basically consistent with the actual excavation results, and the geological prospecting data of ZK1 195-ZK1 240 on the left line of the tunnel are supplemented. The integrity of surrounding rock, the degree of joint fracture development and the response characteristics of typical bad geology, such as aquifer, are obtained by advanced prediction, which improves the accuracy of advanced geological prediction in the later stage of Zhuanghe tunnel construction, provides an accurate basis for the construction of Zhuanhe tunnel in advance, ensures the construction safety of Zhuanghe tunnel, and provides certain reference value for other similar projects in the future.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U456.3;U452.11
本文編號：2508696
[Abstract]:With the rapid development of traffic construction in China in recent years, the investment in tunnel construction has increased, but in the process of tunnel construction, the geological conditions are complex and changeable, which will lead to a variety of geological disasters in the process of tunnel excavation, which have concealment, complexity and sudden, and all kinds of bad geological disasters will lead to the occurrence of many engineering accidents. Based on the study of tunnel monitoring measurement and advanced geological prediction literature, this paper briefly introduces the equipment and methods needed for data acquisition of necessary and selected items in tunnel monitoring and measurement, and introduces some methods of tunnel advanced geological prediction at present. In this paper, based on the third party monitoring and measurement project of Zhuanghe Tunnel, the monitoring and measurement are carried out in the construction process of Zhuanghe Tunnel, and the arch roof subsidence measurement, clearance space convergence measurement and shallow buried surface settlement measurement in the required project are carried out. The ZK1 120 measurement data of the left line of Zhuanghe Tunnel are selected for regression analysis with EXCEL, and the corresponding regression curve is obtained, and the stability time and final displacement value of the same kind of surrounding rock of the tunnel are predicted by this regression curve, and the time of secondary lining is determined, which can better guide the safe construction of the tunnel. This paper introduces in detail the principle of TST method and MALA geological radar method in advance geological prediction, data collection, data processing and its application in advance geological prediction of Zhuanghe Tunnel. TST method has good prediction effect on weak structural zone, fault, caverns, broken zone and other bad geological bodies. MALA geological radar method is sensitive to the difference of dielectric constant and conductivity of geological bodies, and can accurately detect and predict the location of rich water area and broken surrounding rock in front of the surrounding rock. The advance geological prediction of Zhuanghe tunnel adopts the combination of long distance (TST method) and short distance (MALA geological radar method) prediction method. The results obtained from advanced geological prediction data processing are compared with the actual excavation results. The results of advanced geological prediction in the process of tunnel construction are basically consistent with the actual excavation results, and the geological prospecting data of ZK1 195-ZK1 240 on the left line of the tunnel are supplemented. The integrity of surrounding rock, the degree of joint fracture development and the response characteristics of typical bad geology, such as aquifer, are obtained by advanced prediction, which improves the accuracy of advanced geological prediction in the later stage of Zhuanghe tunnel construction, provides an accurate basis for the construction of Zhuanhe tunnel in advance, ensures the construction safety of Zhuanghe tunnel, and provides certain reference value for other similar projects in the future.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U456.3;U452.11
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