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Device and method for precise adjustment of pipe jacking tunnel position based on adjustable grouting container
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A precise adjustment and adjustable technology, applied in tunnels, mining installations, tunnel linings, etc., can solve the problems of running slurry, reducing the structural strength of pipe joints, and difficult to meet the adjustment of the position of the pipe jacking tunnel, so as to avoid secondary damage and avoid Deformation settlement, adjustable deformation effect
Active Publication Date: 2021-06-29
STATE GRID ZHEJIANG ELECTRIC POWER +1
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However, micro-disturbance grouting can only cause small displacements in the tunnel, and it is difficult to meet the needs of the position adjustment of the pipe jacking tunnel. At the same time, micro-disturbance grouting is often grouted on the pipe joints of the pipe jacking tunnel, which will destroy the overall structure of the pipe joints through drilling property, reducing the structural strength of pipe joints
In addition, this grouting construction method is difficult to ensure a uniform grouting amount in a single hole, and the correction result is not accurate enough. The grouting phenomenon will also occur when grouting reinforcement for tunnels in soft soil layers, and the grouting effect is difficult to guarantee
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Embodiment 1
[0048] refer to figure 1 , Figure 4 As shown, a device for accurately adjusting the position of a pipe jacking tunnel based on an adjustable grouting container, the device includes: a threaded interface 1, a sealing cover 2, a check valve 3, a pressure gauge 4, a grouting gauge 5, and a scale rope 6 , hoop 7, bolt 8, gasket 9, nut, connecting pipe 11, grouting container 12, sealing ring 13; which also includes the displacement measuring device during the pipe joint displacement of the pipe jacking tunnel including: laser range finder 14, Data processor 15, display 16, rotating table 17, laser bracket 18, telescopic connecting rod 19 and adjustable steel frame 20.
[0049] The sealing cover 2 is a cylindrical metal body provided with threads, and the sealing cover 2 is used for sealing the threaded interface 1 . There is a knob on the top of the sealing cover, and a sealing ring 13 is provided at the back of the sealing cover to prevent liquid from leaking.
[0050] The thr...
Embodiment 2
[0066] refer to Figure 5 , Figure 6 , this embodiment is suitable for both torsion movement and linear position adjustment in existing tunnels. The precise adjustment method for the position of the pipe jacking tunnel based on the adjustable grouting container includes the following steps:
[0067] 1) A device for accurately adjusting the position of the pipe jacking tunnel with an adjustable grouting container (the device described in Example 1) is pre-placed outside the joint 21 of the pipe jacking tunnel, and the threaded interface 1 is connected to the grouting hole of the joint 21 of the pipe jacking tunnel connected, so that the whole device is reserved outside the pipe joint 21 of the pipe jacking tunnel;
[0068] 2) After the construction of the pipe jacking tunnel pipe section is completed, when it is necessary to move the position of the pipe jacking tunnel pipe section 21, or after the engineering construction is carried out on the upper part of the tunnel, a si...
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Abstract
The invention discloses a device and method for precisely adjusting the position of a pipe jacking tunnel based on an adjustable grouting container. The precise adjustment device for the position of the pipe jacking tunnel of the present invention includes a sealing cover, a threaded interface, a check valve, a connecting pipe, a scale rope, an adjustable grouting container, a laser range finder, a data processor, a display, a rotating table, a laser bracket, A telescopic connecting rod and an adjustable steel frame; a displacement measuring device composed of a laser rangefinder, a data processor, a display, a rotating table, a laser bracket and a telescopic connecting rod. The present invention can realize the precise adjustment of the position of the pipe jacking tunnel after the construction is completed, and can also be used to repair the tunnel displacement of the pipe jacking tunnel due to the construction error and the surrounding engineering construction of the existing tunnel more accurately, so that the pipe jacking The tunnel better conforms to the route temporarily adjusted due to construction, and prevents the joints of the pipe jacking tunnel from being staggered, cracked, and separated from the surrounding soil due to the torsion and displacement of the pipe joints of the pipe jacking tunnel.
Description
technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a device and method for precisely adjusting the position of a pipe-jacking tunnel based on an adjustable grouting container. Background technique [0002] In the past two decades, with the increasing maturity of pipe jacking technology, pipe jacking construction technology has been widely used in tunnel construction. Due to the acceleration of the development of underground space, the density of underground buildings is increasing day by day, sometimes there will be engineering construction on the upper part of the tunnel, which will affect the underground soil and change the stress field around the soil, especially in soft soil areas , the change of the stress field will cause a large deformation of the soil, which will deteriorate the stress of the tunnel structure and lead to a large uneven settlement of the tunnel. In addition, due to construction reasons, t...
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