A posture review method of shield machine used in tunnel construction
A posture review and tunnel construction technology, applied in tunnels, constraint-based CAD, earthwork drilling, etc., can solve the problems of high cost, long measurement and calculation time, low accuracy, etc., and achieve the effect of cost saving
Active Publication Date: 2018-07-13
SINOHYDRO ENG BUREAU 4
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Problems solved by technology
Relying on foreign automatic guiding measurement systems for shield machine attitude review is expensive and costly. The existing manual measurement methods have disadvantages such as low accuracy and long time taken for measurement and calculation.
Method used
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Embodiment 1
[0030] The tunnel axis is designed by the Design Institute in the city’s three-dimensional coordinate system (absolute coordinate system). To obtain the error during the tunneling process of the shield machine, the coordinate position and azimuth of the shield machine in the absolute coordinate system must be obtained through measurement and calculation. . Specifically, it is to obtain the center of the incision of the shield machine and the coordinate position of the center of the incision in the three-dimensional coordinate system of the tunnel and the azimuth of the axis of the shield machine. The direction is compared to obtain the position deviation value and the angle deviation value. The present invention is based on the stability of the space triangle, and the AutoCAD drawing and space transformation functions to realize the switching of the coordinate system and to check the attitude of the shield machine. The following takes a set of actual data as an example to illu...
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The invention discloses a posture rechecking method for a shield machine used for tunnel construction and relates to the technical field of tunnel construction. On the basis of the stability of a spatial triangle and by means of cartographic software AutoCAD, the posture rechecking method comprises the following steps that firstly, a shield tail annular tangent plane and a vertical axis tangent plane of the shield machine are drawn into the AutoCAD, and manufactured into pieces; secondly, the coordinates of feature points mapped on a spot and corresponding to the shield tail annular tangent plane are drawn into the AutoCAD; thirdly, the coordinate system where the shield machine is located is switched to a city three-dimensional coordinate system where a tunnel curve is located through a three-dimensional aligning mode; and finally, the posture of the shield machine after rechecking is obtained by comparing the deviation of an axis of the shield machine and an axis of a tunnel. According to the posture rechecking method capable of rapidly rechecking the posture of the shield machine, a guiding system is checked; basic parameters including shield launching guiding parameters are provided for debugging of the guiding system; controlling of the posture of the shield machine anytime and anywhere is facilitated; and the cost is saved largely.
Description
technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a posture review method of a shield machine used in tunnel construction. Background technique [0002] The shield method is a fully mechanized construction method in the tunnel construction of the underground excavation method. It advances the shield machine underground, and supports the surrounding rock through the shield casing and segments to prevent collapse into the tunnel. In front of the excavation face, a cutting device is used to excavate the soil, and then transported out of the hole by the excavation machine, and the jack is used to pressurize the rear part, and the prefabricated concrete segments are assembled to form a mechanized construction method of the tunnel structure. It has the advantages of fast speed, high safety, good construction quality, and little impact on the surrounding environment, and is more and more used in the construction of urban su...
Claims
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IPC IPC(8): E21D9/00G06F17/50
CPCE21D9/003G06F30/00G06F2111/04
Inventor 任斌安健巩平福张亚喜潘立志牛永胜张甲平张生褔雒建寿
Owner SINOHYDRO ENG BUREAU 4