Method for cleaning excessive materials in conveying pump pipe by adopting medium favorable for separation of concrete mixture

Abstract

The invention discloses a method for cleaning excessive materials in a conveying pump pipe by adopting a medium favorable for separation of a concrete mixture. The method comprises the following steps: 1, after concrete pouring is ended, closing a concrete switch valve immediately; 2, cleaning a pipe orifice on one side of a pump pipe B, and plugging the pipe orifice through a sponge ball; 3, cutting a pump pipe A with a joint at one end, connecting the end, which is provided with the joint, of the pump pipe A to the pipe orifice plugging side of the pump pipe B, and connecting the other end of the pump pipe A to an air pipe of an air compressor; 4, when a reading on a pressure meter of the air compressor reaches a pressure or above under which concrete in the pump pipe B can be blown, switching on the air compressor and opening the concrete switch valve, and blowing out the concrete in the pump pipe B through air pressure; 5, pumping clean water to the residual concrete in the pump pipe B through a pump truck, so as to flush and clean the pump pipe B. According to the method, the pipe is washed through the air pressure, so that the problems of waste of concrete and influence on site civilized construction due to conventional water pressure pipe washing are solved.

Description

technical field [0001] The invention belongs to the technical field of subway underground excavation stations, and relates to a method capable of reducing concrete waste in concrete pouring of underground excavation stations. Background technique [0002] Concrete delivery by ground pump is the main means of concrete construction for underground excavation stations and entrances of underground excavations. After pouring, water pressure is often used to press out the concrete in the pump pipe. Once the concrete pumped out is used for filling The concrete for construction has serious quality hidden dangers and quality defects for the finished structural concrete; if the concrete in the pump pipe is not considered in the total amount of poured concrete, 1 to 2 cubic meters of concrete will be wasted each time it is poured, and it will be squeezed out by water. Excessive concrete will seriously affect the civilized construction on site. Therefore, the development of new, effici...

AI Technical Summary

Problems solved by technology

[0002] Concrete delivery by ground pump is the main means of concrete construction for underground excavation stations and entrances of underground excavations. After pouring, water pressure is often used to press out the concrete in the pump pipe. Once the concrete pumped out is used for filling The concrete for construction has serious quality hidden dangers and quality defects for the finished structural concrete; if the concrete in the pump pipe is not considered in the total amount of poured concrete, 1 to 2 cubic meters of concrete will be wasted each time it is poured, and it will be squeezed out by water. The concrete will seriously affect the civilized construction on site

Images