岩土力学 ›› 2020, Vol. 41 ›› Issue (6): 2143-2154.doi: 10.16285/j.rsm.2019.1011

• 测试技术 • 上一篇    

基于能量测量的声呐渗流矢量法及其应用

胡盛斌1, 2,杜国平3,徐国元1,周天忠2,钟有信2,石重庆4   

  1. 1. 华南理工大学 土木与交通学院,广东 广州 510641;2. 南宁轨道交通集团有限责任公司,广西 南宁 530029; 3. 南京帝坝工程科技有限公司,江苏 南京 213661;4. 中铁一局集团有限公司,陕西 西安 710054
  • 收稿日期:2019-06-10 修回日期:2019-11-19 出版日期:2020-06-11 发布日期:2020-08-02
  • 作者简介:胡盛斌,男,1979年生,博士研究生,高级工程师,主要从事隧道及地下工程试验检测方面的研究工作。
  • 基金资助:
    国家重点研发计划项目(No.2016YFC0401604)。

Sonar seepage vector method based on energy measurement and its application

HU Sheng-bin1, 2, DU Guo-ping3, XU Guo-yuan1, ZHOU Tian-zhong2, ZHONG You-xin2, SHI Chong-qing4   

  1. 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong 510641, China; 2. Nanning Rail Transit Co., Ltd., Nanning, Guangxi 530029, China; 3. Nanjing Emperordam Engineering Technology Co., Ltd., Nanjing, Jiangsu 213661, China; 4. China Railway First Group Co., Ltd., Xi’an, Shaanxi 710054, China
  • Received:2019-06-10 Revised:2019-11-19 Online:2020-06-11 Published:2020-08-02
  • Contact: 徐国元,男,1964年生,博士,教授,博士生导师,主要从事隧道及地下工程的教学与研究工作。E-mail: gyxu@scut.edu.cn E-mail: hqcsut2000@163.com
  • Supported by:
    This work was supported by the National Key Research and Development Program of China(2016YFC0401604).

摘要: 为准确测定天然流场和人工流场下的地下水渗漏隐患,从能量测量的角度提出了一种水文地质测井的新方法——声呐渗流矢量法,系统地介绍了该方法的基本理论、原型仪器和测试步骤等内容。以时差法测量原理为基础,融合了矢量声呐技术、航空定向技术、压力传导技术、GPS定位等多种新技术,自主研发了声呐渗流测量仪及其显控软件,能够准确测定渗漏部位、渗漏通道以及流速、流向、流量等量化指标。并以富水地层地下连续墙基坑为工程案例,建立三维可视化渗流场成像系统,揭示三维空间渗流场分布特征,动态指导基坑渗控设计和堵漏处理,通过复测验证堵漏处理效果。结果表明:声呐渗流矢量法能够实现地下工程渗漏缺陷精准定位,在无强噪声干扰的情况下,检测结果完全满足工程渗控需要;提出以渗透流速为主、单孔渗流量和渗透系数为辅的基坑渗漏风险预警分级判定指标;结合地质勘察、监测预警、现场巡查、应急处置等手段,与其他方法相互验证,提前采取处理措施,有效规避渗漏水风险。

关键词: 能量测量, 矢量声呐, 时差法, 水文地质测井, 渗漏, 渗流场

Abstract: In order to measure the hidden danger of groundwater leakage under natural and artificial flow fields accurately, a new method of hydrogeological logging—sonar seepage vector method is proposed from the point of view of energy measurement. The basic principle, prototype instrument and measurement procedure are introduced systematically. Based on the principle of time difference measurement, the sonar seepage measurement instrument and display and control software have been developed independently, which combine many new technologies such as vector sonar technology, aeronautical orientation technology, pressure conduction technology and GPS locating technology. The sonar seepage measuring instrument can accurately determine the leakage location, leakage passage, flow velocity, flow direction, flow rate and other quantitative indicators. The foundation pit of diaphragm wall in water-rich stratum is studied as an engineering case. The three-dimensional visualized imaging system of seepage field is established to reveal the distribution of three-dimensional seepage field so as to dynamically guide seepage control design of foundation pit, leakage treatment. The effect of leakage treatment is verified by repetition test. The results show that sonar seepage vector method can locate leakage defects in underground engineering accurately, and the test results meet the needs of seepage control in engineering fully in the absence of strong noise interference. The early warning and grading criteria of leakage risk for foundation pit are put forward, which are mainly based on seepage velocity and supplemented by single hole seepage flow rate and permeability coefficient. At the same time, treatment measures must be taken in advance for avoiding leakage risk effectively by combining geological survey, monitoring, in-site inspection, emergency disposal with other means and mutually validation.

Key words: energy measurement, vector sonar, time difference method, hydrogeological logging, leakage, seepage field

中图分类号: 

  • TB566,P641.7
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