The Monitoring Research Of Underground Engineering In City

Along with our country economy swift and violent development,City more to underground spatial development, the massive underground railways, the railroad and the highway tunnel, the water conservancy project tunnel, underground parking garage constructing, shallow submersion underground structure excavating, the city downtown area which in densely populated, the building will stand in great numbers carries on the underground demolition to excavate the construction more and more to be also many, in which will face a most important question will be, how in won't affect the surface inhabitant to live, under the surface building security premise carries on the underground space to excavate.Therefore, studies the city underground project to demolish the ground to demolish the earthquake effect, the exploration underground project excavates the demolition earthquake wave the dissemination weaken rule, and forecast the city underground project demolition intensity of vibration, the optimized demolition designs and demolishes the plan; Studies the stress which the underground project construction excavates causes to distribute the change situation, thus the revision construction support method and the measure, guarantee the construction security is in the city underground project construction urgently needs to solve the question.(1) In view of the above question, this paper has summarized the demolition vibration monitor method and the monitor system, and excavates the demolition take the light axle 2 lines near the Jiangmen station as the research object, constructed (construction) to its construction demolition vibration to the surface the building influence to carry on the monitor, has obtained the massive monitors data, has laid the practice foundation for the paper research.(2) The union gathers the massive demolitions vibrate the scene measured data, and the application earthquake wave related theory, analyzed this underground project to excavate the demolition the ground demolition vibration characteristic and the demolition vibration constructs (construction) to the ground the building influence; Using the return analytic method, obtains this underground project through the computation to excavate the demolition earthquake wave the dissemination weaken rule.(3) Taking demolishes the scene the measured data as the sample, used the return analytic method and the empirical formula law separately to demolishes the vibration strength to conduct the forecast research, has provided the technical basis for the demolition construction parameter determination, guaranteed the entire demolition project smooth security to carry on, and has carried on the contrast analysis to these two methods forecast result; The contrast analysis indicated, two forecasts methods calculate the result precision difference is really big, may see from the examination type original value and the forecasts the value between relative error, the return analytic method forecast the result compares the alternative means to approach to the actual value.(4) This paper summarized the underground project construction to excavate the instrument and the method which the monitoring used, divided into must measure the project and elected to measure the project, and excavated take the light axle 2 lines near the Jiangmen station construction as the research object, excavated the stress variation to its construction which caused to carry on the monitor, has gathered the massive measured dates, and has carried on the analysis to the tunnel monitor cross section different position stress variation.(5) This paper forecasted the project construction of Guantouling tunnel of Wenfu railway by using TSP geology forecast system, and provided the basis for the tunnel project and changing the construction technology. Because of the actual situation of tunneling process in this tunnel was line with the result by TSP, it's feasible to use TSP geology forecast in tunnel.