Barrier lake remediation device and method

Abstract

This invention relates to a device and method for managing landslide dammed lakes. The device primarily involves a longitudinal water conveyance pipe within the landslide dammed lake, connected to one end of a transverse water conveyance pipe, with the other end of the transverse pipe extending outside the lake. When water overflows from the landslide dammed lake into the longitudinal pipe, it is discharged through the transverse pipe, naturally separating the water and sediment within the lake. Through repeated processes of water discharge and sediment deposition, the landslide dammed lake gradually fills up and disappears, ultimately forming a sedimentary plain. This achieves a low-cost, safe, and effective method for managing landslide dammed lakes.

Claims

1. A landslide dam control device comprising a water conveyance unit, the water conveyance unit comprising a transverse water conveyance pipe, a longitudinal water conveyance pipe, and a connecting pipe, the transverse water conveyance pipe and the longitudinal water conveyance pipe being composed of a number of pipe fittings connected in series, the transverse water conveyance pipe having a first end and a second end, the transverse water conveyance pipe being installed through the dam body of a landslide dam, such that the first end of the transverse water conveyance pipe is located inside the landslide dam, and the second end of the transverse water conveyance pipe is located outside the landslide dam, and the longitudinal water conveyance pipe... The pipeline system is installed within the landslide dam lake. The longitudinal water conveyance pipeline has an upper end and a lower end. The connecting pipeline has a transverse connection and a longitudinal connection. The connecting pipeline forms a bend between the transverse connection and the longitudinal connection. The first end of the transverse water conveyance pipeline is connected to the transverse connection of the connecting pipeline, and the lower end of the longitudinal water conveyance pipeline is connected to the longitudinal connection of the connecting pipeline, so that the transverse water conveyance pipeline and the longitudinal water conveyance pipeline are interconnected through the connecting pipeline.

2. The landslide dam management device as described in claim 1, wherein, The longitudinal water conveyance pipeline of the water conveyance unit is located at the center of the landslide dam lake.

3. The landslide dam management device as described in claim 1, wherein, The landslide dam management device further includes a protective unit located within the landslide dam. This protective unit comprises several support pillars and several protective nets. The support pillars are erected around the longitudinal water conveyance pipe of the water conveyance unit, and the protective nets are respectively arranged between two support pillars to surround the longitudinal water conveyance pipe. The upper end of the protective nets is higher than the upper end of the longitudinal water conveyance pipe.

4. The landslide dam control device as described in claim 3, wherein, The support column of the protective unit is equipped with at least one of a water level sensor and at least one video monitor, or a combination thereof.

5. The landslide dam management device as described in claim 1, wherein, The longitudinal water supply pipe of the water supply unit is equipped with at least one water level sensor and at least one video monitor, or a combination thereof.

6. The landslide dam management device as described in claim 1, wherein, The landslide dam management device further includes several bases, which are spaced apart at the bottom of the transverse water conveyance pipe along its length. A portion of the bases is located at the bottom of the landslide dam, while the other portion is located on the ground outside the landslide dam.

7. A method for managing a landslide dammed lake, comprising the following steps: A. Pipeline installation into the lake: A gap is excavated at a suitable location in the dam of a landslide dammed lake, and the first end of a transverse water conveyance pipe of a water conveyance unit is inserted into the landslide dammed lake through the gap in the dam. The second end of the transverse water conveyance pipe is located outside the landslide dammed lake, and the first end of the transverse water conveyance pipe is connected to a transverse connection of a connecting pipe. A longitudinal water conveyance pipe of the water conveyance unit is installed in the landslide dammed lake, and the lower end of the longitudinal water conveyance pipe is connected to a longitudinal connection of the connecting pipe. The transverse water conveyance pipe and the longitudinal water conveyance pipe are interconnected through the connecting pipe, and the upper end of the longitudinal water conveyance pipe is located below the surface of the landslide dammed lake. B. Overflow into the pipeline: The lake water from the landslide dammed lake overflows into the longitudinal water conveyance pipeline from the upper end of the pipeline of the water conveyance unit, and then flows out through the connecting pipeline and is discharged from the second end of the transverse water conveyance pipeline; C. Soil and water separation: After the lake water from the landslide dammed lake is discharged out of the landslide dammed lake through the water conveyance unit, the water and sediment in the landslide dammed lake are naturally separated. As upstream river water and sediment continue to flow into the landslide dammed lake, the soil and water separation work of overflowing lake water and sediment deposition is repeated in the landslide dammed lake; D. Connecting pipes: When sediment is deposited at the upper end of the longitudinal water conveyance pipeline, at least one pipe fitting is connected in series at the upper end of the longitudinal water conveyance pipeline to increase the height of the longitudinal water conveyance pipeline, so that the lake water in the landslide dammed lake continues to overflow and be discharged from the upper end of the longitudinal water conveyance pipeline; E. Formation of a mudflat: As the mud and sand in the barrier lake continue to accumulate, the barrier lake system naturally fills in, forming a mudflat.

8. The landslide dam management method as described in claim 7, wherein, The longitudinal water conveyance pipeline of the water conveyance unit is located at the center of the landslide dam lake.

9. The landslide dam management method as described in claim 7, wherein, The landslide dam management method further includes a protection unit located within the landslide dam. The protection unit comprises several support pillars and several protective nets. The support pillars are erected around the longitudinal water conveyance pipe of the water conveyance unit, with the bottom ends of the support pillars fixed to the bottom of the landslide dam. The protective nets are arranged between two support pillars to surround the longitudinal water conveyance pipe, with the upper ends of the protective nets higher than the upper end of the longitudinal water conveyance pipe.

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