Design of Simulation and Calculation Software for Predicting the Accuracy of Transverse Transfixion in Railway Long Tunnels
The current methods for predicting the lateral through accuracy of transverse transfixion generally only consider the influence of directional and distance observation errors,while neglecting the effects of other multi-source observation errors and measurement network factors in the plane control measurement process.The predicting results often deviate significantly from the actual measurement results.In order to accurately and efficiently predict the accuracy of transverse transfixion of long tunnel,firstly,the impact of angle surveying error,distance surveying error,azimuth error,and centering error were comprehensively analyzed in the process of plane control measurement inside and outside the tunnel,as well as in the transverse survey of the tunnel.Then,based on the analysis results of influencing factors,software requirements analysis,structural design,functional design,and business process design were carried out separately.And a set of transverse transfixion accuracy prediction simulation calculation software was designed using computer simulation methods,taking into account the influence of multi-source observation errors.By engineering validation,the software could obtain the expected results of transverse transfixion error under comprehensive influence,which could be applied to the design and optimization of tunnel plane control measurement schemes.
railway tunnelChengdu-Lanzhou Railwaythe accuracy of transverse transfixioninfluencing factorssimulation calculationsoftware design
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