Sand removal dredging method for upstream face of dam

• Main Authors: WEI QUN, LIU SHANGYU, GAO-YANG QIUYE
• Format: Patent
• Language: English
• Published: 24.02.2016
• Subjects: DREDGING; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING

The invention discloses a sand removal dredging method for an upstream face of a dam. Silt settling channels are arranged in the upstream face of the dam along the axis of the dam in a layered manner, a crane is arranged on the upper portion of the dam, and a pumping and releasing device is installed on the crane; a suspension arm is arranged on the crane, slurry pipes are distributed on the suspension arm, the lower ends of the slurry pipes are vertically inserted into the silt settling channels downwards, and the upper ends of the slurry pipes are communicated with an inlet of a slurry pump of the pumping and releasing device; and the crane runs to drag the slurry pipes to move horizontally, and thus transverse suction is carried out on all the silt settling channels of all the layers to clean away silt. According to the silt drainage method, the layered silt settling channels are arranged on the upstream face of the dam, the silt can be accumulated constantly, and thus the silt can be distributed at different heights instead of the bottom of the dam. The problem that a large amount of silt accumulates, and the silt is difficult to dispose can be solved, the silt elevation can be increased, and thus the silt can be sucked more easily.