The Ground Of Haihe River Two Sides Becomes Research That Will Monitor The Method Synthetically

Along with Tianjin's economy development, Tianjin's construction is also like a raging fire carrying on, and Haihe river is the transformation key point. But our country's surface subsidence phenomenon extremely universal, Tianjin area extremely is particular serious, already has brought the extremely serious influence to people's life and the production. Therefore, thoroughly analyzes the Haihe river surface subsidence the principle and the origin, and takes measures against natural disasters the disaster reduction measure by this establishment reasonable consummation control surface subsidence already the question which becomes urgently needs to solve. Carries on the science to the surface subsidence but the prompt monitor exceptionally important, in recent years emerged the GPS technology applied in the surface subsidence monitor already becomes a hot spot research topic.This article mainly aims at the above question, through carries on the analysis to the Haihe river both banks subsidence history and the present situation as well as the Haihe river both banks geologic structure, introduced creates the surface subsidence the main geological reason and the artificial reason. This article mainly through this year and last year two and so on levelling and GPS (RTK) the data carried on contrasts The precision of RTK(Real Time Kinematic) monitoring is investigated in this dissertation. The precision of RTK and second-class precise leveling is contrasted through analyzing the experimentation on the spot. The precision influenced by time and distance is investigated in detail. It is shown that RTK monitoring can take the place of second-class precise leveling in some special conditions.This article surveyed technical to real-time dynamic (RTK) the precision to conduct the further research. Through the site survey, to the RTK survey elevation precision with two and so on the levelling elevation precision has carried on the contrast, and was away from two factors from the time to make the quota analysis to the RTK measuring accuracy influence, from this indicated in the certain scope (this measurement result was 4km), the RTK survey technology substituted for two and so on the levelling is may realized.Finally surveys the Haihe river both banks surface subsidence through the...