Mechanical check horizontal reciprocating grouting pipe and construction method thereof

Abstract

The invention relates to a mechanical check horizontal reciprocating grouting pipe comprising a grouting outer pipe and an internally-installed grout check device. The grouting outer pipe is provided with grouting holes. The grouting hole side of the inner wall of the grouting outer pipe is fixedly provided with bayonets. The internally-installed grout check device comprises a hollow transmission shaft, an erection mechanism and grout check rods. The end of each grout check rod is provided with a hole plugging small ball. Each grout check rod is connected with the hollow transmission shaft through an angle-limiting hinge. The erection mechanism is used for guaranteeing that the internally-installed grout check device is located on the axis of the grouting outer pipe. When being jacked into the grouting holes to plug grout, the hole plugging small balls plug the grouting holes, and the hole plugging small balls float and are attached to the grouting outer pipe so as to guarantee smooth sliding in the pulling-back grouting process or disassembly process. The invention further relates to a construction method of the mechanical check horizontal reciprocating grouting pipe. By the adoption of the construction method of the mechanical check horizontal reciprocating grouting pipe, a series of functions such as hole opening for grouting, hole closing for grout check and water injection for hole cleaning are achieved. By the adoption of the mechanical check horizontal reciprocating grouting pipe and the construction method of the mechanical check horizontal reciprocating grouting pipe, the grouting holes / the grouting outer pipe are effectively prevented from being blocked, one grouting pipe can conduct grouting repeatedly, a damaged waterproof curtain is continuously repaired, and the damage, caused by conventional methods, to the waterproof curtain is avoided.

Description

technical field [0001] The invention relates to a mechanical non-return horizontal reciprocating grouting pipe and a construction method thereof, belonging to the technical field of grouting and plugging in building construction. Background technique [0002] Trenchless technology refers to the new construction technology of laying, replacing and repairing various underground pipelines under the condition of excavating a very small part of the surface by using various geotechnical drilling equipment and technical means through guided and directional drilling. . In the construction process of deep underground spaces in soft soil and water-rich areas, it is often necessary to use horizontal grouting to construct horizontal water-stop curtains to establish water-resistant boundaries, improve the soil permeability coefficient, and strengthen the soil around the excavation surface, thereby Ensure safe construction and reduce the impact of the construction process on the surround...

AI Technical Summary

Problems solved by technology

The grouting pipe will be clogged due to factors such as the time from the mixing station to the grouting, the mixing ratio of the grout, and the solidification time of the grout.

However, the grouting pipes installed in the previous stage are often not reused many times due to the blockage of the grouting holes and other problems, and new pipes can only be driven into the corresponding positions for grouting.

The existing grouting pipe not only wastes materials due to structural defects, but also greatly increases the workload, so that the grouting operation cannot be carried out in a timely and effective manner

The process of repeatedly driving new grouting pipes is actually a further damage to the water-stop curtain. In addition, the existing abandoned pipes have restrictions on the layout of the new grouting system, which makes the overall sealing effect of repeated plugging and grouting severely affected

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