庄河隧道监控量测及超前地质预报的应用
发布时间：2019-07-01 18:14
【摘要】：我国交通建设近些年来飞速发展,对隧道工程建设的投入随之加大,可是在隧道施工过程中,地质状况复杂多变,在隧道开挖过程中会引发多种地质灾害,这些具有隐蔽性、复杂性和突发性,各种不良地质灾害会导致很多工程事故的发生。通过对隧道监控量测和超前地质预报文献资料的研究,本文简要介绍了隧道监控量测中的必测项目和选测项目的数据采集所需的设备及方法,并且对目前隧道超前地质预报的一些方法进行了介绍。本文以庄河隧道第三方监控量测项目为依托,在庄河隧道的施工过程中实施了监控量测,进行了必测项目中的拱顶下沉量测、净空收敛量测及浅埋地表沉降量测。选取庄河隧道左线ZK1+120断面对量测数据使用EXCEL进行回归分析,得出相应的回归曲线,并且用此回归曲线对该隧道同类围岩开挖后的稳定时间和最终位移值进行预测,确定二次衬砌施作的时间,更好地指导隧道能够安全施工。本文较为详细的介绍了TST法和MALA地质雷达法超前地质预报的原理、数据的采集、数据的处理以及在庄河隧道超前地质预报工作中的应用。TST法对软弱构造带、断层、溶洞、破碎带等不良地质体的预报效果较好；MALA地质雷达法对地质体的介电常数、电导率的差异反映敏感,能够较为准确的探测和预报前方围岩的富水区段和破碎围岩的位置。庄河隧道超前地质预报采用了长距离(TST法)与短距离(MALA地质雷达法)预报方法相结合的方式,利用超前地质预报数据处理后得出的结果与隧道实际开挖结果进行对比,在隧道施工过程中超前地质预报的结果与实际开挖的结果基本一致,并且为隧道左线ZK1+195-ZK1+240的地勘资料做了补充。通过超前预报得到了庄河隧道围岩的完整性、节理裂隙发育程度及含水层等典型不良地质的响应特征,进而提高了庄河隧道施工后期的超前地质预报工作的准确率,为施工方提前采取相应支护措施提供了准确的依据,确保了庄河隧道的施工安全,为以后其他类似项目提供了一定的参考价值。
[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.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U456.3;U452.11
本文编号：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.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U456.3;U452.11
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