Method for forming bagged bulk solid of grouting borehole in concrete counterbalance solid and pore-creating method

Abstract

The invention provides bagged loose objects used for forming a grout hole in a concrete ballasting body and a hole forming method, relating to a grout hole in a concrete ballasting body and a hole forming method in the water conservancy and hydropower grouting projects. The bagged loose objects comprise a tubular bag and the filling materials in the tubular bag, and the two ends of the tubular bag are tied with sealing ropes. The hole forming method comprises: before the ballasting concrete is cast, the position of the hole forming is measured and set out, the bagged loose objects are placed on the hole forming position, the concrete is paved until the i layer of bagged loose objects is laid and the i layer of concrete is cast; after the concrete rises to the high grout lay, the bagged loose objects buried into the concrete experience hole sweeping to form the grout holes. The bagged loose objects and the hole forming method do not need a driller to drill holes, is applicable to normal concrete and roller compacted concrete, not only solves the problem of difficult 'pipe pulling up' by the method of 'pulling up pipe' but also solves the problem that the method of 'pulling up pipe' can not be used for roller compacted concrete, furthermore, the disadvantage of large consumption of pipe by the pipe laying method is avoided.

Description

Technical field [0001] A bagged bulk and hole forming method for forming grouting holes in a concrete weight body relates to a grouting hole in a concrete weight body and a hole forming method in a water conservancy and hydroelectric grouting project. Background technique [0002] At present, in water conservancy and hydropower grouting projects, there are three well-known methods for forming holes in concrete ballasts. They are: [0003] 1. Extrusion method: The steel pipe is used to pull up the steel pipe when the poured concrete has not finally condensed, so as to form a hole when the concrete is still in a plastic state, so as to achieve the purpose of forming a hole without a drill. Its advantages are: no drilling machine is required to form holes, and no embedded pipes are consumed, which saves costs. The disadvantages are: 1) It is inconvenient and labor-intensive to operate on the construction site; 2) The operator needs to have a good grasp of the concrete setting time, ...

AI Technical Summary

Problems solved by technology

The disadvantages are: 1) It is inconvenient to operate on the construction site and consumes manpower; 2) The operator needs to master the setting time of the concrete well, otherwise the operation will fail, and there is no chance of 2 operations; 3) It cannot be used in roller compacted concrete middle

The disadvantage is that it consumes a lot of pipes and cannot be used in roller compacted concrete

This method is easy to break the steel bar, and the cost is high

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