Plug board for protecting wall

Abstract

The invention relates to a plug board for protecting a wall. The section of a plug board body (1) is arranged to be arc, a splicing piece (11) is arranged on one side of the plug board body (1), and an unsealed plug slot (120 is formed in the other side of the plug board body (1). Connecting blocks are arranged at the upper end and the lower end of the plug board body (1). According to the technical scheme, the plug board for protecting the wall is used in cooperation with a drilling tool to separate a drill bit body and the hole wall, and the hole wall is protected against collapse. Meanwhile, multiple plug boards are transversely and firmly spliced through cooperation of the splicing pieces and the plug slots and vertically and firmly spliced through the connecting blocks, construction is very simple and easy to operate, expensive equipment such as a pipe twisting machine is not needed, and construction can be easily implemented by two workers.

Description

Technical field [0001] The invention relates to a wall protection tool for forming holes in pile foundations in the construction fields of underground engineering such as construction, water conservancy, transportation, bridges, subways and the like, and in particular to a wall protection plugboard. Background technique [0002] The existing pile foundation construction faces three major problems, among which the problem of collapse is one of the most difficult to solve. At present, there are two traditional methods to prevent landslides: one is mud wall protection. Special materials for wall protection (such as bentonite) are poured into the foundation pile hole in proportion to the ratio, and the mud is thrown on the hole wall by the drill bit when drilling. To achieve the purpose of protecting the collapse. This method is low in cost, but it is not suitable for quicksand and large-area landslides; the other method is to lower the protective tube, but the efficiency of the low...

AI Technical Summary

Problems solved by technology

This method is low in cost, but it cannot be applied to quicksand and large-area landslides; another method is to lower the casing, but the efficiency of lowering the casing is very low, and special tools are needed, such as matching pipe rubbing machines, and the pipe rubbing machines are expensive. very low efficiency

Due to the existence of friction force on the inner wall of the aperture, it is difficult to drill down the casing. When pulling out the casing, the weight of the casing itself needs to be considered at the same time, and it is even more difficult to pull out the casing.

And often a project requires more than one type of casing, which has poor versatility and high cost

It is difficult for general engineering to bear the high construction cost and cannot afford

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