Construction method and detection device for top pipe outer wall thixotropic slurry lubricating sleeve formation in loose covering layer

Abstract

The invention discloses a construction method and detection device for top pipe outer wall thixotropic slurry lubricating sleeve formation in a loose covering layer. The construction method comprises the steps of positioning, pressure adjustment, grout amount increasement and jacking. The detection device comprises a sleeve and an electronic soil pressure measuring device arranged in the sleeve. A propulsion motor arranged at the rear end of the sleeve is in contact with the electronic soil pressure measuring device. The propulsion motor communicates with a signal receiver through a controller. A data instructor communicates with the signal receiver through a wireless or wired network. A signal transmitter is connected with the electronic soil pressure measuring device. A data receiver communicates with the signal transmitter through a wired or wireless network. The construction method and detection device have the advantages that a jacking pipeline is made to be located in bentonite suspension, so that the problem that the resistance of the outer wall of a top pipe is large due to dry friction is solved, and engineering risks are reduced; and the detection efficiency of the soil pressure can be improved substantially through the detection device.

Description

technical field [0001] The invention relates to a construction method for forming a thixotropic mud lubricating sleeve on the outer wall of a pipe jacking in a loose covering layer, and belongs to the construction field of mud-water balanced pipe jacking in water conservancy projects, municipal pipe network projects and corresponding projects. Background technique [0002] With the vigorous advancement of the country's urbanization, the task of reconstruction, new and expansion of the underground pipe network is quite arduous. Due to historical reasons, the underground pipe network is intricate, and a considerable part of it has no file records. In order to avoid large-scale excavation and demolition of the old pipe network and not affect the normal living needs of residents, the use of trenchless underground pipe jacking technology is currently recognized as a construction technology. [0003] During the mud-water balance pipe jacking construction of the Huaxian urban secti...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a construction method and testing equipment for forming the thixotropic mud lubricating sleeve on the outer wall of the jacking pipe in the loose covering layer. The construction method adjusts the pressure and performance indicators of the thixotropic mud to make the jacking pipe in the bentonite suspension, thereby solving the problem of large resistance caused by dry friction on the outer wall of the pipe jacking pipe, reducing engineering risks; the detection equipment can greatly improve the detection efficiency of earth pressure

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