Construction equipment for four-layer pipe ground layer depression type double-liquid horizontal jet grouting

Abstract

The invention discloses a four-pipe stratum decompression double fluid level jet construction device in the civil work technique field, wherein, a high pressure pump, a low pressure lump, a vacuum lump, and an air compressor are connected with a four- pipe jet-drilling through a shunt. The four-pipe jet-drilling is supported and connected through a support of a horizontal drill. The rotation and the movement of the four- pipe jet-drilling are controlled by a driver on the horizontal drill. One end of a four-way injector head with a plurality of functions is connected with the four- pipe jet-drilling through a thread. An orifice seal device is arranged on an orifice of an underground drilling which needs rotary spray and reinforcing. The four-way injector head with a plurality of functionsand the four-pipe jet-drilling passes through the orifice seal device to drill a hole and spray on the stratum. The inner pipe of the four- pipe jet-drilling is connected with the vacuum pump. A second pipe is connected with the high pressure pump. A third pipe is connected with the low pressure pump. An outer pipe is connected with the air compressor. The invention carries out the horizontal rotary spray construction in the earth; thereby solving the problem that the horizontal rotary sprays solidify is difficult in the current underground water.

Description

technical field [0001] The invention relates to construction equipment in the technical field of construction engineering, in particular to a construction equipment of quadruple-pipe formation decompression type double-liquid horizontal rotary spraying. Background technique [0002] The high-pressure rotary grouting construction technology is to spray high-pressure fluid from the rotating nozzle to cut the soil while mixing the cement slurry with the chopped soil. After chemical reaction, a solid reinforced soil column is formed, and the strength can reach more than several MPa. This construction method was invented by Dr. Nakanishi from NIT in Japan. At first, it was a simple single-pipe method (also known as CCP method), which only sprayed cement slurry; Compressed air wraps high-pressure cement slurry cutting and mixing, so that the diameter of the reinforced body is greatly increased compared with the single-pipe method; the triple-pipe method uses compressed air to wrap...

AI Technical Summary

Problems solved by technology

The invention utilizes the high-pressure double-liquid rotary spraying technology of four tubes to quickly solidify and harden the loose ground, and carries out horizontal rotary spraying construction underground. It has two functions: one is vacuum suction and decompression; So as to solve the problem that it is difficult to carry out horizontal rotary jet solidification under the condition of groundwater flow

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