The Research Of Measuring Error Control Scheme In Subway Construction

This article has mainly studied the three subject matters which is most the important factor to the measuring error control in subway construction. First, the optimization design of the plane control net. This article researched control net's qualitative index, and refers to the precision target and the expense question according to the control net reliability, unified Matlab with VC++ to develop the control net optimization design tectonic plate. This plate is desined to improve the reliability and precision of control network by the nature of the unnecessary measurement. Second, the gross erro survey.In the first step, carries on the observation data pretreatment using the control net each kind of condition relations;In the second step carries on the examination according to the theory of probability and mathematical statistic's theory to the observed value; Finally chooses the power repetitive process to the observation data utilization to carry on the thick difference survey.Third,the select of the best measurement scheme.Select the best measurement schement according to the requirements of the erro tolerance and every stage's impacts to the subway's cross linking.