Testing device of underground pressure pipeline

Abstract

The invention discloses a testing device of underground pressure pipeline, comprising a platform which is provided with a frame, wherein the frame includes a relatively installed left vertical plate and a right vertical plate, and a horizontal plate that is connected with the top ends of two vertical plates. The central position on the lower side of the horizontal plate is provided with a cylinder which is connected with a high pressure gas source via a gas pipe together with a pressure adjusting valve; a piston rod in the cylinder is penetrated through the lower end of the cylinder and is connected with a counter-force loading plate. The left vertical plate and the right vertical plate are respectively provided with a pipe fixing device; two pipe fixing devices are corresponding to each other, wherein one of the pipe fixing devices is provided with a gas inlet hole which is connected with the high pressure gas source via the gas pipe together with a pressure adjusting valve. The platform on the lower part of the horizontal plate is provided with a row of jacks arranged on the left and right; there are at least four jacks symmetrically arranged on the left and right along the vertical axis of the cylinder. The device provided by the invention can imitate different modes of heterotaxis and can measure the safety characteristic parameters of the underground pressure pipeline based on the underground pressure pipeline measuring system.

Description

technical field [0001] The invention belongs to the technical fields of underground engineering, pipeline engineering and municipal engineering, and relates to an underground pressure pipeline mechanical characteristic test device, which is used for safety inspection of underground pressure pipelines under the vertical displacement of strata. Background technique [0002] Underground pipelines are often hailed as lifelines, highlighting their important role in the national economy and people's lives. Under the background of the continuous acceleration of urbanization in our country, underground pipelines have become the protagonists of engineering accidents in the construction of large-scale underground projects such as subways, seriously affecting the production and life of the people. The economic loss is as high as 45 billion yuan; in addition, when large-scale oil and gas pipelines (such as West-to-East Gas Pipeline, China-Russia Oil Pipeline, etc.) pass through areas wh...

AI Technical Summary

Problems solved by technology

However, at present, domestic and foreign scholars' research on underground pressure pipelines under the action of vertical displacement of strata is limited to theoretical calculations based on the combination of elastic theory and settlement development model, and the assumptions of the theoretical model are seriously inconsistent with the actual engineering (for example, ignoring the pipeline stiffness , it is believed that the pipeline and the surrounding soil coordinate deformation), there is no effective test method to verify and improve the existing theoretical results, or to provide new ideas for the study of underground pressure pipelines under the vertical displacement of the formation

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