Slag removal anti-lock braking system for rock tube push bench and slag removal method

Abstract

The invention provides a slag removal anti-lock braking system for a rock tube push bench. The tube push bench comprises a tool pipe provided with a drill bit and a matching pipe connected to the tool pipe, and the anti-locking system comprises a slag blocking plate arranged on the tool pipe; and the slag blocking plate can prevent silt and / or stones from flowing along the outer wall of the tool pipe. A slag removal method for the rock tube push bench comprises the steps that tool pipe drill bit torque is collected, and slag is removed through the slag blocking plate; tool pipe drill bit torque is collected, namely, the tool pipe drives the drill bit to rotate, a torque collector collects the torque for driving the drill bit in real time, and when the torque is reduced by 2% or above, a pressurizing part is started to pressurize a spray head or a flushing pipe; and slag is removed through the slag blocking plate, namely, the spray head or the flushing pipe sprays water to the slag blocking plate so that silt and / or stones gathered outside the slag blocking plate can leave the slag blocking plate. The slag removal anti-lock braking system for the rock tube push bench has the advantages that the slag removal anti-lock braking system is particularly suitable for construction of pipelines with the hole diameter ranging from 80 cm to 200 cm, and slurry can be prevented from flowing along the tool pipe to lock the tool pipe.

Description

technical field [0001] The invention relates to an anti-lock braking system of a pipe jacking machine and a slag cleaning method, in particular to an anti-lock braking system and a slag cleaning method for a rock pipe jacking machine. Background technique [0002] In the construction of long-distance casing pipe jacking, after the completion of the prefabricated pipe crossing, the casing needs to be inspected. After the inspection and other procedures are completed, the casing will be dragged back through the pipe. Influence, the anti-corrosion layer outside the casing is easily scratched, and it is easy to damage the base material, resulting in difficulties in maintenance during later operation and increased safety. In serious cases, this casing cannot pass the supervision and inspection of special equipment and relevant inspection and supervision units. , leading to the failure of the construction of the line, the loss will be irreparable. Therefore, from the perspective ...

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Problems solved by technology

[0002] In the construction of long-distance casing pipe jacking, after the completion of the prefabricated pipe crossing, the casing needs to be inspected. After the inspection and other procedures are completed, the casing will be dragged back through the pipe. Influence, the anti-corrosion layer outside the casing is easily scratched, and it is easy to damage the base material, resulting in difficulties in maintenance during later operation and increased safety. In serious cases, this casing cannot pass the supervision and inspection of special equipment and relevant inspection and supervision units. , leading to the failure of the construction of the line, the loss will be irreparable

Therefore, from the perspective of the original construction technology, it is impossible to meet the long-distance and large-diameter casing construction, and the casing must be protected during the process of threading the casing to ensure that the casing is not subject to friction and other damage to the casing. damage measures

For the Hangzhou Natural Gas Utilization Project Fuyang Branch Line (Zhijiang Section) (S12 Relocation) project, the length of the 11 sections of pipe jacking is different, the longest reaches 353 meters, and the shortest is 198 meters. Some of them need to pass through the rock section. During the forward jacking process of the tool tube of the pipe jacking equipment, muck and mud will flow to the bottom of the tool tube through the gap of overbreak, causing the tool tube to be locked by the mud and rock, and the resistance of jacking will be greatly increased. Increase, the cutter head is stuck after the tool tube that is subjected to resistance is locked, and it is impossible to continue jacking

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