一种南方湿润地区土石坝渗流监测用集水廊道装置

Abstract

本实用新型提供了一种南方湿润地区土石坝渗流监测用集水廊道装置，涉及南方湿润地区土石坝渗流监测技术领域。该装置包括集水廊道、排水沟以及导流沟，集水廊道设置在排水棱体的下游侧，集水廊道包括抗渗边墙和抗渗底壁，集水廊道与排水棱体连接的抗渗边墙上设置有过水流道，集水廊道的两侧及下游侧均设置有相互连通的排水沟。本实用新型中的集水廊道装置是一种“底壁、左右及下游边墙隔阻型、上游墙单面收集排水棱体渗流”的土石坝渗流监测用集水廊道装置设计，通过在抗渗边墙上设置过水流道，并设置排水沟的方式使得集水廊道只接受大坝渗流水，阻隔周边雨水及地下水，从而保证所测渗流量数据能更为真实地反映大坝渗流特性。

Claims

1. A catchment gallery device for monitoring seepage of earth and rockfill dams in the southern humid region, characterized by, The system includes a water collection corridor, a drainage ditch, and a diversion ditch. The water collection corridor is located on the downstream side of the drainage prism. The water collection corridor includes an impermeable side wall and an impermeable bottom wall. A water flow channel is provided on the impermeable side wall connecting the water collection corridor and the drainage prism. The drainage ditch is interconnected on both sides and the downstream side of the water collection corridor. One end of the diversion ditch is connected to the water collection corridor, and the other end is connected to the drainage ditch. A triangular weir is provided in the diversion ditch.

2. The catch gallery arrangement for seepage monitoring of earth and rockfill dams in the south wet region according to claim 1, characterized in that, It also includes a top drainage ditch disposed on the drainage prism, the top drainage ditch being connected to the drainage ditch.

3. The catch gallery arrangement for seepage monitoring of earth and rockfill dams in the south wet region according to claim 1, characterized in that, The water flow channels are multiple and evenly distributed on the anti-seepage sidewall where the water collection corridor and the drainage prism are connected.

4. The catch gallery arrangement for seepage monitoring of earth and rockfill dams in the south wet region according to claim 3, characterized in that, A filter bag is provided at one end of the water passage near the drainage prism.

5. The catch gallery arrangement for seepage monitoring of earth and rockfill dams in the south wet region according to claim 1, characterized in that, The distance between adjacent water passages ranges from 0.5 meters to 1 meter.

6. The catch gallery arrangement for seepage monitoring of earth and rockfill dams in the south wet region according to claim 1, characterized in that, The water collection channel is equipped with an expansion joint, which contains a waterstop, a sealant, and a seal. The sealant is located on both sides of the waterstop, and the seal is located at the opening of the expansion joint on the water-facing side.

7. The catch gallery arrangement for seepage monitoring of earth and rockfill dams in the south wet region according to claim 6, characterized in that, The spacing of the expansion joints ranges from 8 meters to 12 meters.

8. The catch gallery arrangement for seepage monitoring of earth and rockfill dams in the south wet region according to claim 1, characterized in that, The depth of the water collection corridor ranges from 3 meters to 5 meters, the width of the water collection corridor ranges from 0.8 meters to 2.5 meters, and the thickness of the impermeable sidewall and the impermeable bottom wall ranges from 0.4 meters to 1.2 meters.

9. The water collection gallery device for seepage monitoring of earth-rock dams in humid southern regions according to claim 1, characterized in that, A filter layer is provided at the bottom of the drainage prism, and the filter layer extends to the water collection channel.

10. The catchment gallery arrangement for monitoring seepage of earth and rockfill dams in the south wet region according to claim 1, characterized in that, The top perimeter of the water collection corridor is equipped with protective railings.

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