Deflection correction method for clay conveying pump of heading machine

Abstract

The invention relates to a deflection correction method for a clay conveying pump of a heading machine. The method comprises the following steps of (1) determination of a pumping hole, wherein according to the deflection direction of the heading machine, a preformed hole in the direction identical to the deflection direction is selected to be formed in a heading machine shell or a hole is formed again and used as a pumping hole; (2) clay pumping for correction, wherein through the conveying pump, the clay is pumped to the soil from the determined pumping hole, and the reverse application forceduring clay pumping is used for correcting the heading machine; (3) gesture monitoring and ending standards, wherein in the process of clay pumping, the gesture of the heading machine is monitored intime, and after the gesture meets the deflection correction requirement, pumping is stopped instantly. According to the method, the conveying pump is adopted for pumping clay to the soil, pressurization filling is conducted constantly, the bearing capacity of the soil is improved, the reverse application force is provided for the heading machine shell, and the aim of gesture deflection correctionfor the heading machine is achieved. According to the method, deflection correction of the heading machine shell in the rolling, horizontal and vertical directions and the like can be achieved, and the method has the advantages that the deflection correction distance is short, the deflection correction effect is good, and the controllable range of the pumping pressure is wide.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a method for correcting deviation of a roadheader clay delivery pump. Background technique [0002] At present, the roadheader (shield machine or pipe jacking) in tunnel construction is affected by geology, cutterhead torque, and tunneling attitude. The shell of the roadheader often deflects, and then the segments are also twisted, which directly affects the segments. The quality of the installation, especially when the lateral height difference and torsion is large, will affect the normal excavation of the roadheader, or cause the deviation of the tunnel axis to be too large, and the hole cannot be exited normally. [0003] There are two types of deflection correction technologies widely used today: [0004] 1. By changing the rotation direction of the cutter head, the casing of the roadheader is rotated by using the reaction torque generated by the rotation to achieve the pu...

AI Technical Summary

Problems solved by technology

The deficiencies of this method of deviation correction are: the deviation correction effect is general, the deviation correction range is relatively small, about 0-20mm, and the timeliness of deviation correction is very important; The applicability of deviation correction in excavation is poor

The disadvantages of this method of deviation correction are: poor deviation correction effect, long deviation correction distance, and large limitation of grouting pressure control. If the grouting pressure is slightly too small, the deviation correction effect will not be achieved. Deform the surface uplift and even penetrate the surface

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