Research On A Method Of Seismic Wave Space Detection That Based On Drilling And Surface Detection

Metro is the core of urban transport systems, many cities being in the peakperiod of subway construction,Survey data is not detailed enough leads to therisk of subway construction process surge, resulting in a large number ofpersonal and property damage.Metro survey data includes details about ground layer information andadverse geological distribution, etc. The stratigraphic information obtainedby drilling sampling and laboratory soil test, connections the differentdrilling of stratigraphic information can be obtained venues stratigraphicinformation. Drill hole spacing, soil disturbance will affect the thestratigraphic classification accuracy. The conventional method for both groundgeophysical exploration or drilling (wells) detection, there are somedifficulties such as multiple solutions and so on. How to utilize the existingholes so that make a finer detection between two holes is the focus of this thesis.In this paper, I propose that "A method of seismic wave space detection that basedon drilling and surface detection " and completed the prototype development work,this method is based on transmission CT and reflection CT, source point andreceiver arrangement more intensive. The system can achieve the combination ofdrilling and ground survey，achieve3D tomographic imaging to the subsurfacemedium body and not be affected by terrain conditions. By application of thismethod in a Beijing subway project investigation, and with the stratigraphicdata for comparison,the results show that the method works well.The method isable to provide a more detailed ground layer and adverse geologicalinformation,and has a more broad application prospects.