An upside-down shaft wall construction method connected in dense underground pipeline groups

Abstract

The invention discloses an upside-down well wall construction method connected in underground dense pipeline groups, which belongs to the technical field of trench construction, and can monitor the water pressure in the rainwater pipeline in real time, and wait for the water pressure in the rainwater pipeline to increase to a certain extent , the first alarm device can issue an alarm to prevent the blocking air bag from being extruded from the rainwater pipe, resulting in the accumulation of sewage. In addition, there is an anti-tilt device for Larsen sheet piles. The gravity sensor is used to monitor whether the Larsen sheet piles are tilted when they are jumping. At the same time, the inner support of the Larsen sheet pile is arranged in a mesh shape, which has good stability, and also adopts a combination of rigid support and flexible support, which can eliminate the impact caused by temperature and other influences. It can also withstand and resolve the deflection, local bending moment, torque, etc. of the overall structure caused by unfavorable factors such as large bending moments and large deviations.

Description

technical field [0001] The invention belongs to the technical field of trench construction, and in particular relates to an upside-down well wall construction method connected in underground dense pipeline groups. Background technique [0002] The normal operation of the city is inseparable from the discharge of rainwater by stormwater pipes. With the construction and development of the city, the underground rainwater pipeline network has also been continuously improved and developed, but this also faces the connection of new and old underground rainwater pipelines. The connection project of old and new rainwater pipes is difficult to construct, has great potential safety hazards, and has a great impact on the surrounding area. It usually faces the challenges of the geographical location of the construction site, the area of ​​the construction work surface, and the geological structure of the construction site. [0003] In the connection project of old and new rainwater pip...

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Problems solved by technology

[0004] There are defects in the above content: the current method of upside-down shaft wall is only suitable for general situations, and there is no one that is suitable for the connection of underground dense pipelines; The rainwater pipeline is blocked and diverted, but the current sealing airbag can only be used for sealing, and the water pressure in the rainwater pipeline cannot be monitored in real time. If the water pressure in the rainwater pipeline increases to a certain level, the sealing airbag will be extremely It is likely to be squeezed out from the rainwater pipe, resulting in the accumulation of sewage; the current existing upside-down well wall construction method is to directly jump on the Larsen sheet pile. When the inclination angle of the Larsen sheet pile reaches the level visible to the naked eye, people will notice the Larsen sheet. The pile is tilted. At this time, the tilted Larsen sheet pile needs to be pulled up and inserted again, which is time-consuming and labor-intensive, and is very inconvenient. After the Larsen sheet pile is jumped, it will bear the lateral pressure from the soil layer, so internal support is required At present, the inner support of the Larsen sheet pile is supported by a steel pipe (including I-beam purlins and corbels), but this support method is unstable

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