Underground continuous wall construction equipment and construction method

Abstract

The invention discloses underground continuous wall construction equipment and a construction method. The construction equipment comprises a guide frame, a supporting shaft which is arranged above the guide frame for rotating the guide frame, and at least one milling cutting device which is arranged below the guide frame for milling cutting rock soil; and the milling cutting device comprises a supporting frame, milling cutting wheels which are separately arranged at the two sides of the supporting frame, and movable supporting legs which are regulated in a telescopic mode. The construction method applies the underground continuous wall construction equipment to construct. On the basis of meeting high construction efficiency and high construction precision, the underground continuous wall construction equipment further can reduce installing power, improves using efficiency of the milling cutting wheels, and effectively reduces production cost.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to an underground diaphragm wall construction equipment and construction method. Background technique [0002] With more and more infrastructure construction in our country, the application range of underground diaphragm wall technology is becoming wider and wider, such as subway station construction, bridge anchoring construction, foundation pit construction of high-rise buildings, dam reinforcement, etc. [0003] At present, in the technical field of underground diaphragm wall construction equipment, there are mainly impact drills, diaphragm wall grabs and double-wheel milling machines. Among them, impact drills and diaphragm wall grabs are the most widely used, and double-wheel milling machines have been used more and more recently. [0004] Among them, the impact drill uses a suspended hammer to repeatedly punch the groove hole to form a groove. Although this groo...

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Problems solved by technology

[0004] Among them, the impact drill uses a suspended hammer to repeatedly punch the groove hole to form a groove. Although the cost of this groove formation method is low, there are problems such as very low construction efficiency, poor construction accuracy, and serious oversquareness.

[0005] Diaphragm wall grabs have high construction efficiency and low construction cost in soft soil layers, but cannot be constructed in hard rock layers, and the scope of use is relatively limited

[0006] Although the double-wheel slot milling machine is currently the most efficient equipment for underground diaphragm wall construction, the price, construction cost and maintenance cost of the whole machine are very high, which cannot be afforded by ordinary enterprises, which also hinders the further promotion of the double-wheel slot milling machine

[0007] In addition, during the construction of the diaphragm wall, the problem of the deviation of the slot hole is often out of tolerance. To solve this problem, because the impact drill has no anti-deflection device, the slot hole is most likely to be deflected during the construction process. The commonly used correction measures It is to backfill large rocks and re-form holes, which is inefficient and difficult to control. Therefore, the slots with high precision requirements cannot be used; and the double-wheel milling machine is the best choice. Due to the above problems, although it has Certain deviation correction capability, but the installed power is very large, usually above 500KW, and only one side of the milling wheel works when it is used for groove repair, while the other side of the milling wheel is idle, resulting in a large amount of unnecessary fuel Loss, resulting in high cost and low promotion efforts

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