Shield tunneling machine marching method

Abstract

The invention aims to overcome at least one defect of the prior art and provides a shield tunneling machine marching method, so that the manufacturing cost of supporting seats is lowered and the circulation utilization of the supporting seats is achieved. The method includes that S1, a shield tunneling machine is placed on supporting seat groups to keep the forward direction of the shield tunneling machine parallel to the supporting seats; and the outer end of a horizontal push cylinder of the shield tunneling machine is connected with reaction members; S2, the horizontal push cylinder of theshield tunneling machine is started, and the shield tunneling machine is marched to slide in the head end direction; S3, when the shield tunneling machine is completely separated from at least a firstsupporting seat, the horizontal push cylinder extension of the shield tunneling machine is stopped, the horizontal push cylinder of the shield tunneling machine is separated from the reaction members, and first supporting seats and second supporting seats are separated; S4, the horizontal push cylinder is contracted, and the horizontal push cylinder is contracted to connect the reaction members of the second supporting seats; S5, move the first separated supporting seats to the head end of the supporting seat group for installation and fixation; and S6, the steps S2, S3, S4 and S5 are repeated in a loop to push the shield tunneling machine to the designated position. According to the shield tunneling machine marching method, the operation is simple, and the dynamic circulation utilizationof the supporting seats is achieved.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a shield machine propulsion method. Background technique [0002] In recent years, with the rapid development of cities, the construction of urban subways has developed rapidly, and the construction of urban rail transit has become more and more popular. Shield excavation is now the main method of urban subway construction, but when encountering some complex geology, other construction methods are required. When constructing a tunnel, when the shield machine reaches the excavated tunnel, it is necessary to empty push the shield machine through the excavated tunnel section. In order to ensure that the shield machine is smoothly pushed through the excavated tunnel section, the concrete guide platform in the excavated tunnel is used as the shield body support, and the steel rail laid on the guide platform is used as the shield body walking track. As the propulsion power ...

AI Technical Summary

Problems solved by technology

Application No. 2018111103796 discloses an empty push stepping device. This device adopts the method of laying guide rails on a concrete guide platform with a thickness of tens of centimeters, and reserves a reaction force hole on the guide platform, and inserts the reaction force member into the reaction force hole. The horizontal pushing cylinder of the shield machine acts on the reaction member to advance along the track; both of the above two devices need to lay concrete in advance, which costs a lot of labor and concrete. ,low efficiency

[0004] The publication number is CN102337900A, which discloses a method for empty pushing of a circular matting shield machine. The device is provided with a bracket at the bottom of the shield machine, and two rows of vertical jacks are arranged on both sides, and the horizontal jack transmits force through the reaction force member and the bracket. , the horizontal jack exerts force to push the shield machine forward on the bracket, then start the vertical jack to throw away the shield machine, the horizontal jack shrinks, pushes the bracket forward, shrinks the vertical jack and the shield machine falls on the bracket and repeats the above direction Forward propulsion, the above-mentioned device is easy to cause damage to the bracket due to the contact between the bracket and the ground, the forward movement of the bracket and the sliding friction on the ground, and the shield machine is generally as high as thousands of tons, and the vertical jack needs a lot of power. In actual engineering Low efficiency, low reuse rate, high cost

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