Pipe jacking attitude prediction method based on roller measurement

Abstract

The invention provides a pipe-jacking attitude prediction method based on roller measurement, which comprises the following steps: measuring notch coordinates (X cutting, Y cutting and Z cutting) andshield tail coordinates (X tail, Y tail and Z tail) of a pipe-jacking attitude in the previous stage, and counting a pipe-jacking advancing mileage C roller in the previous stage by adopting a rollercounting method; a cut mileage C < pre > of the pipe jacking posture to be predicted is provided, the pipe jacking advancing distance D to be predicted is calculated, and the pipe jacking advancing distance D to be predicted is the distance between the C < pre > and a pipe jacking advancing mileage C < roller > in the last stage; and calculating the notch coordinates and shield tail coordinates ofthe pipe jacking posture to be predicted according to a two-point type space linear equation formed by the obtained pipe jacking advancing distance D, the notch coordinates (X cutting, Y cutting andZ cutting) and the shield tail coordinates (X tail, Y tail and Z tail). The posture of the segment can be corrected conveniently, and tunnel construction is guided.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a method for predicting the attitude of pipe jacking based on roller measurement. Background technique [0002] With the rapid development of my country's economy, there are more and more urban pipe jacking construction tunnels. The pipe jacking construction has the advantages of fast construction speed, small impact on the surrounding environment, strong stratum adaptability, and high engineering quality. In order to ensure the construction quality of the pipe-jacking tunnel, the tunnel axis must be strictly controlled, and the pipe-jacking attitude is the key factor in the axis control during the construction of the pipe-jacking tunnel. [0003] At present, the pipe jacking posture at home and abroad is mainly measured manually after the single-ring construction is completed, which cannot be measured in real time during the construction process. The operator needs...

AI Technical Summary

Problems solved by technology

[0007] In view of the above situation, the present invention provides a pipe jacking attitude prediction method based on roller measurement, which solves the problem that the influence of jack retraction on the mileage is not considered in the existing pipe jacking attitude prediction, resulting in low system accuracy and common pipe jacking attitude prediction. Poor performance, lack of deflection correction guidance for segment posture

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