Application and research of geologic radar in groundwater disease of tunnel engineering inspection
As a kind of underground lineament building, the tunnel inevitably will pass through different hydrology geology in construction process and thus form a catchment corridor which usually occurs in most of tunnels. Pour water and water logging is a common geological disaster and the main disease both in the construction tunnels and operation tunnels. So it is urgent for us to carry through the research on the geological disaster of groundwater. The Inspecting and controlling measures against the ground water geological disaster are also needed. In this paper, Geologic Radar is applied to tunnel engineering quality inspection to detect some quality problems possibly caused by groundwater. In order to diagnose the disease degree of operation tunnels and to estimate tunnels security condition, this paper analyzes the causes of bugs existing behind the tunnel lining, expounds the theory and method of making non-destructive test on tunnel lining quality by using Geological Radar. By processing and analyzing field data, the following functions can be performed, such as detecting the thickness of concrete lining accurately, determining the distribution position and quantities of rebar and grid steel, searching existed cavity and uncompacted area behind the lining especially lining arch top. We also apply the method of morphology to the extraction of liner image feature. We get the liner boundary line and water logging area more intuitively by wavelet analysis, and find the anomalous point in the liner. It has been proved that Geologic Radar is a feasible method to inspect the structure of tunnel concrete lining. Adopting hole-drilling method to make verifications with detecting results of geological radar, the results of the two kinds of methods do not have big difference.
Geologic Radar tunnel Groundwater Inspection
Yu Wang Minan Tang Zhenzhong Han Shengxie Xiao Yuancai Zhang
Chongqing Jiaotong University,Chongqing, 400074, China Chengdu University of Technology,State Key La North China University of Water Conservancy and Electric Power, Zhengzhou 450011, China Guizhou traffic engineering quality supervision station, Guiyang 550004, China Chengdu University of Technology, State Key Laboratory of Geohazard Prevention and Geoenvironment Pr Chongqing Jiaotong University,Chongqing, 400074, China
国际会议
成都
英文
631-636
2010-06-14（万方平台首次上网日期，不代表论文的发表时间）