超前地质预报在祥和隧道施工中的综合应用研究

发布时间：2018-03-28 05:16

  本文选题：不良地质体　切入点：超前地质预报　出处：《西南交通大学》2015年硕士论文

【摘要】：本论文以广大线祥和隧道超前地质预报施工工作为依托,分析了隧道施工过程中典型不良地质体的标志判别和试验测定,阐述其可能带来的隧道地质灾害：并研究总结了实际工程中各类地质预报的基本理论、相关操作方法和判定依据,进而提出隧道综合超前地质预报施工工序,以指导施工。结合前期勘察设计文件、开挖掌子面地质情况,运用不良地质体的发育特征分析前方隧道围岩可能带来的地质灾害,从而确定下一阶段超前预报施工工序：(1)前期准备,为地质预报提供施工条件；(2)长短距离预报相结合,长距离预报病害大体类别、位置,短距离预报以指导施工；(3)探测方式,通过长距离预报调整短距离预报方法和参数,根据不同地质情况对症下药,提高预报效率和准确率；(4)结合地质情况和探测成果图,为准确地提供前方围岩地质资料。祥和隧道位于云南省大理白族自治州境内,全场10220米,是广大铁路改造工程中的重点控制性工程。隧道地质条件极其复杂,建设周期长,施工安全风险大,设计为Ⅰ级高风险隧道。采用了综合超前地质预报新技术方法探测掌子面前方各类不良地质体,包括断层破碎带、节理裂隙密集发育带等,在施工过程中基本上探测出了掌子面前方病害,为施工单位施工工艺的调整提供了准确的地质资料。
[Abstract]:Based on the geological prediction work of Xianghe tunnel, this paper analyzes the identification and test of typical bad geological bodies during tunnel construction. This paper expounds the possible geological hazards of tunnels, and studies and summarizes the basic theories, relevant operation methods and judgment basis of various geological forecasts in practical engineering, and then puts forward the construction procedure of comprehensive advanced geological prediction of tunnels. In order to guide the construction, combined with the Prophase investigation and design documents, excavating the geological situation of the face of the face, and using the developmental characteristics of the bad geological body to analyze the possible geological hazards caused by the surrounding rock of the tunnel in front of the tunnel, In order to determine the early preparation for the next stage of advanced forecast construction procedure, to provide the construction conditions for geological prediction and to provide the construction conditions for geological prediction, the long distance prediction can be combined with long distance prediction, and the general category, location and short distance forecast of the disease can be predicted to guide the construction of the exploration method. By adjusting the methods and parameters of short range prediction by long distance prediction, according to the different geological conditions, to improve the forecasting efficiency and accuracy. In order to accurately provide the geological data of surrounding rock in front of the tunnel, Xianghe Tunnel is located in Dali Bai Autonomous Prefecture, Yunnan Province, with a full field of 10220 meters. It is a key control project in the vast railway reconstruction project. The geological conditions of the tunnel are extremely complex and the construction period is long. The construction safety risk is high and the tunnel is designed as class 鈪，

本文编号：1674917