Grouting pipe with heating function in soil layer and heating method

Abstract

The invention discloses a grouting pipe with a heating function in a soil layer and a heating method. The grouting pipe comprises a hollow pipe and a microwave heating device, the hollow pipe comprises a first hole and a second hole which are through along the length direction of the pipe, the first hole is used for conveying strengthening slurry, and the bottom end of the second hole is sealed bya sealing piece. The microwave heating device comprises a power supply, a rectifying circuit, a magnetron and an adjustable focusing waveguide pipe which are sequentially connected, the magnetron andthe adjustable focusing waveguide pipe can vertically move in the second hole, and microwaves can be transmitted to the outer side wall of the hollow pipe from a second end of the adjustable focusingwaveguide pipe. The grouting pipe has the advantages that the temperature of a pebble layer area needing grouting can be improved, setting and hardening of the strengthening slurry are accelerated, the microwaves can be focused by the adjustable focusing waveguide pipe, the penetration depth of the microwaves can be enlarged, the radiation area of the microwaves can be enlarged in unit time, andgrouting pipe surrounding water velocity change, temperature change and grouting filling pore effects can be monitored.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering research, and in particular relates to a grouting pipe with heating function in the soil layer and a heating method. Background technique [0002] It is easy to lose stability when excavating in the gravel and pebble layer, so grout can be injected in the gravel and pebble layer, and the solidified grout can strengthen the gravel and pebble layer. However, if the gravel layer is rich in flowing groundwater, the injected grout is often washed away by the groundwater, and it is difficult for the injected slurry to coagulate quickly and effectively, and it is difficult to fill the permeable pores of the gravel layer, resulting in difficulty in grouting reinforcement in the gravel layer. Increasing the temperature can accelerate the coagulation and hardening of the reinforcement grout, so a device that can increase the temperature of the gravel and water flow around the grouting pipe is needed,...

AI Technical Summary

Problems solved by technology

However, if the gravel and pebble layer is rich in flowing groundwater, the injected grout is often washed away by the groundwater, and it is difficult for the injected grout to coagulate quickly and effectively, and it is difficult to fill the permeable pores of the gravel and pebble layer, resulting in difficulty in grouting reinforcement in the gravel and pebble layer

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