Through Survey Method and Error Analysis of Mine Roadway in Large Mine

In order to improve the accuracy and reliability of the through survey for a mine roadway,a rational survey plan should be prepared and an effective survey method should be conducted.In combination with the project cases,the paper analyzed the surface ground control network,underground traverse survey,mine shaft orientation and gyro orientation edge survey influenced to the through accuracy of the mine roadway.The paper discussed the feasibility method to improve the measuring accuracy.With the prediction and analysis on the error of the through survey,the predicted ultra error between the two central lines in the through point was ± 304 mm and the predicted ultra error of the two grade lines was ± 184 mm,which could meet the Mine Survey Regulations and construction requirements and could verify the rationality of the selected survey plan and method.