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A platform for research: civil engineering, architecture and urbanism
Siltation clearing method applied to non-cutoff drainage deep tunnel engineering
The invention provides a siltation clearing method applied to non-cutoff drainage deep tunnel engineering. The siltation clearing method comprises the following steps that 1) the quality of inlet water is controlled, impurities with the particle size greater than 0.2 mm are filtered out, the flow velocity of sewage flow is controlled to ensure that the flow velocity of the sewage flow is greater than 0.65 m/s, and if the sediments in a tunnel are still deposited, the next step is performed; 2) the flow velocity of water flow in the tunnel is increased through external water supplementation toscour the sediments, if the sediments in the tunnel are still deposited, the next step is performed; and 3) an underwater robot is placed for tunnel desilting. According to the method, the two parts,namely, the drainage tunnel design level and the tunnel operation level are comprehensively considered, through reasonable and effective procedure connection, it can be kept that the large-range sediments cannot appear inside the tunnel in the long-time operation process of the drainage deep tunnel engineering, and normal operation of the tunnel is guaranteed, compared with traditional drainage pipeline siltation clearing, the characteristics that water cut-off emptying is not needed, the desilting efficiency is high, and the safety coefficient is high are achieved.
本发明提供一种应用于非断流排水深隧工程的淤积清理方法，包括以下步骤：1)控制进水水质，过滤颗粒粒径大于0.2mm的杂质，并控制污水水流流速，保证污水水流流速大于0.65m/s；若隧道内淤积物仍发生沉积，则进入下一步骤；2)通过外部补水，增加隧道内水流流速，冲刷淤积物；若隧道内淤积物仍发生沉积，则进入下一步骤；3)放置水下机器人进行隧道清淤。本方法从排水隧道设计层面、隧道运营层面两部分综合考虑，通过合理有效的工序衔接，能保持排水深隧工程在长时间运行中，隧道内部不会出现大范围淤积物，保证隧道正常运营。相较于传统排水管道淤积清理具有不用断水排空、清淤效率高、安全系数高特点。
Siltation clearing method applied to non-cutoff drainage deep tunnel engineering
The invention provides a siltation clearing method applied to non-cutoff drainage deep tunnel engineering. The siltation clearing method comprises the following steps that 1) the quality of inlet water is controlled, impurities with the particle size greater than 0.2 mm are filtered out, the flow velocity of sewage flow is controlled to ensure that the flow velocity of the sewage flow is greater than 0.65 m/s, and if the sediments in a tunnel are still deposited, the next step is performed; 2) the flow velocity of water flow in the tunnel is increased through external water supplementation toscour the sediments, if the sediments in the tunnel are still deposited, the next step is performed; and 3) an underwater robot is placed for tunnel desilting. According to the method, the two parts,namely, the drainage tunnel design level and the tunnel operation level are comprehensively considered, through reasonable and effective procedure connection, it can be kept that the large-range sediments cannot appear inside the tunnel in the long-time operation process of the drainage deep tunnel engineering, and normal operation of the tunnel is guaranteed, compared with traditional drainage pipeline siltation clearing, the characteristics that water cut-off emptying is not needed, the desilting efficiency is high, and the safety coefficient is high are achieved.
本发明提供一种应用于非断流排水深隧工程的淤积清理方法，包括以下步骤：1)控制进水水质，过滤颗粒粒径大于0.2mm的杂质，并控制污水水流流速，保证污水水流流速大于0.65m/s；若隧道内淤积物仍发生沉积，则进入下一步骤；2)通过外部补水，增加隧道内水流流速，冲刷淤积物；若隧道内淤积物仍发生沉积，则进入下一步骤；3)放置水下机器人进行隧道清淤。本方法从排水隧道设计层面、隧道运营层面两部分综合考虑，通过合理有效的工序衔接，能保持排水深隧工程在长时间运行中，隧道内部不会出现大范围淤积物，保证隧道正常运营。相较于传统排水管道淤积清理具有不用断水排空、清淤效率高、安全系数高特点。
Siltation clearing method applied to non-cutoff drainage deep tunnel engineering
一种应用于非断流排水深隧工程的淤积清理方法
WANG TAO (author) / MIN HONGPING (author) / RUAN CHAO (author) / PENG GUANPING (author) / HUANG WENHAI (author) / ZHANG YANJUN (author) / LI JIAJIAN (author) / LI HUSHUANG (author) / HU GANG (author)
2020-10-30
Patent
Electronic Resource
Chinese
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