Freezing pipe capable of exhausting air

Abstract

The invention relates to a freezing pipe capable of exhausting air and an achieving method of the freezing pipe capable of exhausting the air. The freezing pipe comprises a pipe body, a liquid supply pipe, a locating ring, an air exhaust pipe and a valve and is characterized by further comprising an automatic exhaust valve. The liquid supply pipe and the air exhaust pipe are arranged in the pipe body. The locating ring is fixed in the pipe body. The air exhaust pipe penetrates through the locating ring and is connected with the valve. The automatic exhaust valve is arranged at the rear end of the valve and connected with the valve. The achieving method of the freezing pipe capable of exhausting the air comprises judging whether the air gathers on the upper portion of the freezing pipe or not and conducting air exhausting operation. The freezing pipe capable of exhausting the air and the achieving method have the advantages that the air gathering on the upper portion of the freezing pipe can be exhausted, development of an upper portion freezing wall is guaranteed, project period is shortened, construction safety and quality are guaranteed, the air can be exhausted automatically and in time, work load is reduced, observation of workers is not required, structure is simple, installation is convenient and the freezing pipe and the achieving method are widely applicable to various freezing projects.

Description

technical field [0001] The invention relates to an exhaust-freezing pipe and a realization method thereof, and is especially suitable for artificial ground freezing engineering. Background technique [0002] The artificial ground freezing method uses artificial refrigeration technology to send low-temperature refrigerant into the ground to freeze the water in the ground and turn the natural rock and soil into frozen soil to increase its strength and stability to resist ground pressure and isolate groundwater from excavation. It is a special ground reinforcement method for excavation of tunnels, shafts and underground works under the protection of frozen walls and permanent support. [0003] Artificial ground freezing technology originated from natural freezing phenomenon. When the Russians first mined gold in Siberia, they used the natural cooling to freeze the ground to dig shafts. In 1862, British engineers first used artificial freezing technology to strengthen the grou...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it cannot exhaust the gas in the freezing tube with a positive elevation angle, and the gas often accumulates at the highest point of the freezing tube with a positive elevation angle, which cannot achieve a good exhaust effect and affects the The development of the upper frozen wall has caused serious safety hazards to the project. At the same time, the valve needs to be operated manually and needs to be watched by staff from time to time, which is inconvenient. It also often causes the exhaust to be delayed in time, and the exhaust often discharges salt water, which pollutes the work. If the site is not properly cared for, it will cause a large amount of salt water to be lost, ranging from waste of salt water to the soil, resulting in an increase in the salt content of the soil, which cannot be frozen, resulting in safety hazards and even project failures

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