Same-hole layered simultaneous-grouting cement soil condensate generating device

Abstract

The invention provides a same-hole layered simultaneous-grouting cement soil condensate generating device, and relates to the technical field of underground engineering grouting reinforcement. Grout can be limited in any section for grouting, the purpose of segmented grouting can be achieved, and the device is simple in structure, ingenious in design and easy to implement. The device comprises anelastic grouting outer pipe, a rigid core pipe arranged in the grouting outer pipe in a sleeved mode and a sharp bottom arranged at the bottom of the grouting outer pipe, wherein a plurality of long-strip-shaped openings are formed in the pipe wall of the core pipe, and a plurality of stoppers used for adjusting the grout outlet position are arranged outside each opening; grouting holes are formedin the pipe wall of the grouting outer pipe; each opening corresponds to the corresponding grouting holes; and a one-way expansion ring is arranged outside each grouting hole. In the grouting process, the grouting holes which do not need to be grouted are in sealed connection with the corresponding stoppers, and the positions of the stoppers are changed to seal the grouting holes in different positions to adjust the grouting positions. According to the technical scheme, the device is suitable for the underground grouting reinforcement process.

Description

【Technical field】 [0001] The invention relates to the technical field of grouting reinforcement for underground engineering, in particular to a device for generating soil solidified products with the same hole and layered with cement. 【Background technique】 [0002] In the grouting reinforcement project of underground engineering, loose and weak or water-rich strata are often encountered. When grouting reinforcement of such dungeons, the biggest problem faced is the serious collapse of boreholes and low porosity. The previous grouting methods include forward and backward grouting processes. The forward grouting process is to control the drilling depth from the shallow ground to the deep section for grouting reinforcement until the design grouting depth is reached. The disadvantage is that the repeated drilling rate is high, and the drilling is easy to be repeatedly grouted. Backward grouting mainly includes TSS pipe grouting technology, and it is difficult to realize separa...

AI Technical Summary

Problems solved by technology

The disadvantage is that the repeated drilling rate is high, and the drilled holes are easy to be repeatedly grouted

At present, the retreating grouting mainly adopts the TSS pipe grouting process, which is difficult to realize the separated grouting. When the loose soil layer and the solid soil layer are interlaced, it is easy to cause uneven grouting, making it difficult to achieve the expected grouting effect.

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