Method for in-tunnel starting of shield tunneling machine

Abstract

The invention discloses a method for in-tunnel starting of a shield tunneling machine. The method comprises the following steps: exploding preset positions to form a drilling and exploding section; constructing a guiding station in the drilling and exploding section, and constructing a starting station in a shield well, wherein the guiding station and the starting station are connected; propelling the shield tunneling machine from the starting station to the guiding station; constructing a reaction wall at the tail of the shield tunneling machine, wherein a steel ring preserved for the reaction wall is connected with a segment, so as to seal the shield tunneling machine and an exploding section; paving a starting temporary orbit, and mounting a starting circular segment. According to the method, when the geological condition is complex, the drilling and blasting section can be formed through exploding, the starting station and the guiding station are arranged in the shield well as well as the drilling and blasting section, the shield tunneling machine can be directly propelled into the guiding station of the drilling and blasting section, and the reaction wall is arranged at the tail of the shield tunneling machine and provides a direction force for the shield tunneling machine, so that the in-tunnel starting of the shield tunnel machine can be finished. The method provided by the invention is suitable for complex geological conditions and limited construction spaces.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering construction, and specifically relates to a starting method in a tunnel of a shield machine. Background technique [0002] The starting of the shield machine is generally initiated in the shield well or separately on the platform, and the reaction force required for the starting is provided by the starting reaction frame. However, the above-mentioned starting method of the shield machine, Both require a certain construction space to be realized, and the construction cost of this method is relatively high, and it has certain restrictions on the construction geology. When the construction geology is complex and the construction space is relatively narrow, the shield machine cannot be used in the shield well or The start of the shield machine is carried out separately on the platform. [0003] Therefore, if the shield machine can be started in the cave and the construction is simple and t...

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Problems solved by technology

[0002] The starting of the shield machine is generally initiated in the shield well or separately on the platform, and the reaction force required for the starting is provided by the starting reaction frame, but the above-mentioned starting method of the shield machine, Both require a certain construction space to be rea...

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