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Underwater construction method for deep-groove bagged sand sleeper throwing protection project
The invention discloses an underwater construction method for a deep-groove bagged sand sleeper throwing protection project. In the bagged sand sleeper throwing process, a spur dike is built firstly to change the flow state of water flow, the disordered water flow is taken away, the speed of the water flow located on the rear portion of the spur dike is decreased, and the water flow in a construction area is changed into laminar flow from turbulent flow. The underwater construction method comprises the following steps that S1), unit cell division is conducted; S2), underwater terrain before-throwing measurement is conducted; S3), bagged sand sleeper throwing drop distance test determination is conducted; S4), sleeper throwing ship positioning is conducted; S5), bagged sand sleeper throwing manufacturing is conducted; S6), bagged sand sleeper throwing is conducted, specifically, S6.1), the spur dike is built, and S6.2), single-layer throwing is conducted; S7), underwater terrain after-throwing measurement is conducted; S8), sequential throwing is conducted; and S9), riverbed section measurement and completion measurement are conducted. By means of the bagged sand sleeper layered spur dike building structure and the layer-by-layer throwing construction measure, the effective forming rate of the deep-groove bagged sand sleeper throwing protection project is increased by 80% or above from about 60% of the condition that the spur dike is not built, the forming rate is greatly increased, the construction cost is saved, and the construction time is shortened.
本发明公开了一种深槽袋装砂抛枕防护工程的水下施工方法，在袋装砂抛枕投抛过程中，先筑造丁坝改变水流流态，把紊乱的水流挑走，降低位于丁坝后部的水流速度，将施工区的水流由紊流改变为层流，包括以下步骤：S1）单元小区划分；S2）水下地形抛前测量；S3）袋装砂抛枕落距试验确定；S4）抛枕船定位；S5）袋装砂抛枕制作；S6）袋装砂抛枕投抛；S6.1）筑造丁坝；S6.2）单层抛投；S7）水下地形抛后测量；S8）依次抛投；S9）河床断面测量以及完工测量，使用袋装砂抛枕分层筑丁坝结构和逐层抛投施工的措施，深槽袋装砂抛枕防护工程的有效成型率从不筑丁坝的约60%提高的80%及以上，大大提高成型率，节省了施工成本，缩短施工时间。
Underwater construction method for deep-groove bagged sand sleeper throwing protection project
The invention discloses an underwater construction method for a deep-groove bagged sand sleeper throwing protection project. In the bagged sand sleeper throwing process, a spur dike is built firstly to change the flow state of water flow, the disordered water flow is taken away, the speed of the water flow located on the rear portion of the spur dike is decreased, and the water flow in a construction area is changed into laminar flow from turbulent flow. The underwater construction method comprises the following steps that S1), unit cell division is conducted; S2), underwater terrain before-throwing measurement is conducted; S3), bagged sand sleeper throwing drop distance test determination is conducted; S4), sleeper throwing ship positioning is conducted; S5), bagged sand sleeper throwing manufacturing is conducted; S6), bagged sand sleeper throwing is conducted, specifically, S6.1), the spur dike is built, and S6.2), single-layer throwing is conducted; S7), underwater terrain after-throwing measurement is conducted; S8), sequential throwing is conducted; and S9), riverbed section measurement and completion measurement are conducted. By means of the bagged sand sleeper layered spur dike building structure and the layer-by-layer throwing construction measure, the effective forming rate of the deep-groove bagged sand sleeper throwing protection project is increased by 80% or above from about 60% of the condition that the spur dike is not built, the forming rate is greatly increased, the construction cost is saved, and the construction time is shortened.
本发明公开了一种深槽袋装砂抛枕防护工程的水下施工方法，在袋装砂抛枕投抛过程中，先筑造丁坝改变水流流态，把紊乱的水流挑走，降低位于丁坝后部的水流速度，将施工区的水流由紊流改变为层流，包括以下步骤：S1）单元小区划分；S2）水下地形抛前测量；S3）袋装砂抛枕落距试验确定；S4）抛枕船定位；S5）袋装砂抛枕制作；S6）袋装砂抛枕投抛；S6.1）筑造丁坝；S6.2）单层抛投；S7）水下地形抛后测量；S8）依次抛投；S9）河床断面测量以及完工测量，使用袋装砂抛枕分层筑丁坝结构和逐层抛投施工的措施，深槽袋装砂抛枕防护工程的有效成型率从不筑丁坝的约60%提高的80%及以上，大大提高成型率，节省了施工成本，缩短施工时间。
Underwater construction method for deep-groove bagged sand sleeper throwing protection project
一种深槽袋装砂抛枕防护工程的水下施工方法
DENG CHUANGUI (author) / ZHUANG XUEFEI (author) / QIU QIANYONG (author)
2021-06-04
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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