Same-hole multi-slurry injection machine tool and same-hole multi-slurry injection plugging method

Abstract

The invention provides a same-hole multi-slurry injection machine tool and a same-hole multi-slurry injection plugging method. The machine tool comprises a grouting head body, a grouting hard pipe andgrouting hoses; the grouting head body comprises two first grouting cylinder parts which are arranged side by side and a second grouting cylinder part, and one-way valve elements are arranged in thefirst grouting cylinder parts; a first transverse channel and a second transverse channel communicating the first transverse channel with the outside are communicated between the two first grouting cylinder parts, and a first temporary plug is arranged at the end, communicating with the outside, of the second transverse channel; a second temporary plug is arranged at the bottom of the second grouting cylinder part; the grouting hard pipe is communicated with the top of the second grouting cylinder part, and the grouting hard pipe is communicated with a hard pipe outer joint; and the grouting hoses are communicated with the tops of the first grouting cylinder parts, and hose outer joints are communicated with the grouting hoses. According to the same-hole multi-slurry injection machine tooland the same-hole multi-slurry injection plugging method, water stopping and leaking stoppage can be achieved rapidly, the soil body strength of a water stopping and leaking stoppage position can beimproved, the double-liquid grouting setting time is easy to master, and the grouting effect is good.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a device for injecting multiple types of grout into the same hole and a method for injecting and plugging multiple types of grout into the same hole. Background technique [0002] During the excavation and construction of foundation pits in underground engineering, water leakage may sometimes occur due to the failure of the water-stopping function of the foundation pit enclosure structure. Subsidence and collapse of enclosure structures. [0003] In current underground engineering emergency plugging construction, generally adopt polyurethane grouting (single liquid grout) or double liquid grouting (cement grout and water glass grout) two kinds of grouting methods. The former has a fast sealing and plugging effect, but the soil strength at the plugging area is low; the latter has a higher soil strength at the plugging area, but the water sealing and plugging effect ...

AI Technical Summary

Problems solved by technology

[0004] In view of the above, the present invention provides a device for injecting multiple types of grout into the same hole and a method for injecting and plugging multiple types of grout into the same hole, so as to solve the problems of low strength at the plugging place and slow plugging effect in the two grouting methods in the prior art. Defects, through the application of multiple grout injection tools in the same hole, it can not only inject polyurethane and other grouting water-stopping grouts to quickly stop water and plugging, but also inject double-liquid grout to improve the soil strength at the water-stopping and plugging place , and the setting time of double-liquid grouting is easy to grasp, and the grouting effect is good

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