Jacking-pulling construction method

Abstract

The disclosure provides a jacking-pulling construction method. The jacking-pulling construction method comprises the following steps of: well site production, that is, a pipe jacking-pulling working well is made by using a precast reinforced concrete pipe well through the undrained caisson construction, the bottom of the pipe jacking-pulling working well is sealed by using concrete underwater, andthe water level inside the well is more than 1 meter higher than the water level outside the well; guide hole drilling, that is, a directional drilling machine is connected to a first end of a jacking-pulling drill pipe, and a second end of the jacking-pulling drill pipe is connected to a guide bit, so as to drill a guide hole according to a predetermined trajectory; reaming stage, in which the guide bit is disassembled, a reverse drill bit is installed to the second end of the jacking-pulling drill pipe, and reverse reaming is performed along the hole through which the jacking-pulling drillpipe passes; and pipeline laying, that is, a front end fixing cap, a short force transmission rod, a rear anchor top plate, a rear anchor short rod, a hydraulic jack and a self-locking socket pipe areinstalled to the end of the reverse drill bit, and jacking-pulling installation construction is carried out on the self-locking socket pipe. The scheme provided by the disclosure achieves the effectsof high construction accuracy, short construction period and small construction area.

Description

technical field [0001] The present disclosure relates to the field of pipeline construction, in particular to a jack-up construction method. Background technique [0002] The construction of underground pipelines in my country mainly adopts three construction techniques: open excavation laying, traction pipe and pipe jacking. However, in urban development and construction, rain and sewage separation system drainage is the trend of urban development planning. It is imperative to transform the rain and sewage combined system into a separate system in the old urban area. Due to years of development, the urban planning of the old urban area is not standardized. , the roadways are narrow and narrow, various underground pipelines are spread all over, the geological conditions are complex, the road traffic is tense, and the surface working surface is insufficient. The above three processes all have the problem of affecting the traffic or demanding the construction environment. Am...

AI Technical Summary

Problems solved by technology

However, in urban development and construction, rain and sewage separation system drainage is the trend of urban development planning. It is imperative to transform the rain and sewage combined system into a separate system in the old urban area. Due to years of development, the urban planning of the old urban area is not standardized. , the roadways are narrow and narrow, various underground pipelines are spread all over, the geological conditions are complex, the road traffic is tense, and the surface working surface is insufficient

The use of the above three processes all have problems affecting traffic or high requirements for the construction environment

Among them, the open excavation construction process is relatively simple and the construction speed is fast, but the construction damages the road surface greatly and affects the traffic for a long time. Mechanical excavation also requires that the width of the road surface cannot be lower than the radius of rotation of the excavator; the construction of the traction tube has an impact on traffic. However, the elevation control of the construction pipeline is poor, and it is easy to cause the pipeline to bend and deform due to poor geological conditions, and the length requirement of the two-way ramp section makes the traction pipeline construction unable to be applied in the narrow roadway; pipe jacking The construction technology has the advantages of large construction depth and small environmental damage. However, the size of the pipe jacking well is relatively large. The tube well enclosure covers a large area, requires a lot of space, and has a great impact on road traffic

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