Method for testing pipe soil contact pressure of large section rectangular pipe-jacking construction of comprehensive pipe gallery

Abstract

The invention discloses a method for testing pipe soil contact pressure of large section rectangular pipe-jacking construction of a comprehensive pipe gallery. The method comprises the steps of: 1, soil pressure detection hole forming, which is implemented by forming a soil pressure detection hole of a pipe soil contact pressure detecting device before carrying out jacking construction by adoptinga pipe-jacking machine; 2, working well and receiving well construction, which is implemented by conducting construction on a working well and a receiving well, arranging a cave outlet reinforcing structure right ahead a cave outlet, and arranging a cave inlet reinforcing structure right behind a cave inlet; 3, jacking construction and pipe soil contact pressure detection. The method has the advantages of simple steps, reasonable design, convenient construction and good reinforcement effect, adopts an actual measuring method for testing the pipe soil contact pressure in the pipe-jacking construction process timely and precisely, adopts soil pressure gauges of adjustable soil pressure detection devices which can be adjusted in a telescopic manner for conducting soil pressure detection on pipe soil contact pressure, and can effectively prevent the damage to the soil pressure gauges caused by a cave outlet portal water-blocking steel plate, the cave outlet reinforcing structure and the cave inlet reinforcing structure.

Description

technical field [0001] The invention belongs to the technical field of pipe jacking construction, and in particular relates to a pipe-soil contact pressure test method for large-section rectangular pipe jacking construction of a comprehensive pipe gallery. Background technique [0002] Pipe jacking construction is a non-excavation construction method. The pipe jacking method is to use the jacking force generated by the jacking equipment in the working pit to overcome the friction between the pipe (ie pipe jacking) and the surrounding soil, and push the pipe according to the designed slope. Push it into the soil and transport the earth away. In actual pipe jacking construction, multiple pipe jacking joints are usually used for jacking. After one pipe jacking joint is jacked into the soil layer, the next pipe is continued to be jacked. The principle is to use the main jacking cylinder and the pipe Space, relay room, etc. thrust, to push the tool pipe or boring machine from th...

AI Technical Summary

Problems solved by technology

At present, limited by the lack of engineering applications and imperfect measurement methods, the research on the distribution of pipe-soil contact pressure in rectangular pipe jacking construction is still in the stage of theoretical analysis, and there is a lack of actual engineering proof

Images