Soft mattress sinking construction method

Abstract

The invention discloses a soft mattress sinking construction method. The method is characterized in that a water-permeable opening is formed in mattress cloth, and therefore in the mattress sinking process, water flow below the mattress cloth can flow upwards through the water-permeable opening, the settling velocity of the mattress cloth can be increased, the oscillating mattress drifting phenomenon and the mattress floating phenomenon can be relieved, a curtain-shaped cloth body shields the opening under the function of the water flow after mattress sinking, and the protective effect of geotextile is guaranteed. Through the technology, the mattress sinking and implantation efficiency can be improved, the mattress drifting phenomenon and the mattress tearing phenomenon can be reduced in the mattress sinking process, and accuracy is guaranteed. The method has the advantages that soft mattress sinking operation can be facilitated and the mattress sinking and implantation efficiency and the accuracy are improved, and improves the protection effect of soft mattresses on a riverbed, and service life is prolonged.

Description

technical field [0001] The invention relates to a river bank protection technology, in particular to a construction method for soft drainage and sedimentation. Background technique [0002] The existing soft row is a river bed and river bank protection technology extended from the geotextile soft foundation treatment technology. Since the 1990s, it has been used in the middle and lower reaches of the Yangtze River and estuary waterway regulation and river bank and coast protection projects. For more than 20 years, many designers and construction personnel have done a lot of research on the structural type and sinking method of the soft row, but there is no major improvement. The common structure of the existing soft row generally includes laying on both sides of the river bed below. The arrangement of the side and the concrete blocks arranged at even intervals above the arrangement, for example, a soft row of interlocking blocks disclosed in my country 201410121675.1, adopts ...

AI Technical Summary

Problems solved by technology

[0004] When this existing soft body sinks and drains, the geotextile is subjected to too much water pressure during the sinking process, and it is not easy to sink, and all the weight of the ballasted concrete block above acts on the geotextile, which increases the weight of the geotextile during the sinking process. Various forces when the soft row floats and oscillates cause the soft row to easily roll over and tear

[0005] Specifically, through the technical investigation during on-site construction, as well as the research on the underwater force and failure mechanism of the soft row, it was found that during the laying process, when the water flow rate is high, the row body suffers from great resistance and the row body is easy to discharge. Sliding, the upper edge of its underwater part is easy to roll over under the momentum of the water flow and the tilt of the turbulent water mass, causing adverse consequences

The first consequence is that the soft platoon leaves the originally designed implantation position, which fails to meet the design requirements, and causes waste of the platoon body, reducing the protective effect of the soft platoon

The second is that after the front part of the row body is rolled up, the area facing the water at the upstream end is increased, and the blocking and circumventing effect on the water flow is increased, which makes the water flow near the row body more disturbed and tumbling, and increases the local flow velocity, resulting in Under the action of water flow, the row body vibrates and floats up and down, which may tear the arrangement, which reduces the overall protection effect and service life of the soft row

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