隧道地质预报全空间瞬变电磁反演方法及评价体系研究

项目名称： 隧道地质预报全空间瞬变电磁反演方法及评价体系研究

项目编号： No.51278423

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 建筑科学

项目作者： 漆泰岳

作者单位： 西南交通大学

项目金额： 80万元

中文摘要： 当前，隧道地质预报的主要难点之一是隧道前方地下水的探测问题，断层、岩性变化等问题在隧道地质预报中已经得到较好地解决。为此，本研究针对隧道超前探水问题，考虑隧道全空间瞬变电磁效应的影响，对其反演方法及评价体系开展研究，主要解决以下关键问题： (1) 确定影响隧道全空间瞬变电磁效应的主要因素和权重排序，找出全空间与半空间瞬变电磁效应间的关系及其规律。 (2) 引入全空间瞬变电磁效应关系式，对一维半空间瞬变电磁反演式进行修改，建立三维全空间瞬变电磁反演数值模型，编程求解隧道超前地质体的多解不确定问题。 (3) 应用多种数学分析方法，以原始和结果数据为样本，建立具有学习和推测功能的智能数据库，形成多手段智能反演及其评价体系。 本研究提高了隧道超前探水的准确率，为隧道施工安全提供了技术保障。

中文关键词： 瞬变电磁法；全空间；数据库；专家系统；反演

英文摘要： Current, one of major difficult problems in tunnel geological prediction is the groundwater detection in front of the tunnel, faults, lithology change and other problems in tunnel geological prediction has better solution. Therefore, this study aimed at the problem of water detection in front of the tunnel, considered the tunnel whole space transient electromagnetic effect, its inversion methods and evaluation system is put on research, it mainly solves the following key problems: (1) To determine the main factors of effecting tunnel whole space transient electromagnetic effect and its weight order, find out the relations between whole and half space transient electromagnetic effect and its law. (2) Leading in the formulas of whole space transient electromagnetic effect, the inversion formulas on one dimensional half space transient electromagnetism are modified, and the inversion numerical models for 3D transient electromagnetism are established,the uncertain prolems of geological body in front of tunnel are solved by programming. (3) Used a variety of methods of mathematical analysis, with the original an result data as samples, the intelligent database with learning and infering function is set up, and the multiple means of intelligent inversion and its evaluation system has been formed. This research will im

英文关键词： Transient electromagnetic method；Whole space；Database；Expert system；Inversion analysis