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老挝某水电站尾水淤积应用气举法进行清淤,该技术是利用空压机产生高压风,高压风进入吸沙管后,与管内泥浆形成气水混合物,由于气水混合物密度低于未与气体混合的泥浆,故淤沙将自行上移,另外吸泥管高压风出口断面以上水柱由静止状态开始加速运动,产生流速差形成负压,将管口附近的水和泥沙吸人吸沙管内,管内水和泥沙在高速气流带动下沿管流动,输送到预定地点,达到清淤目的。实践表明,气举清淤具有操作简单、低耗、安全、环保、便捷、高效、优质等特点,具有较大应用推广价值。
Laos a hydropower station tailings siltation application of gas lift method of dredging, the technology is the use of air compressor to generate high-pressure wind, high pressure wind into the sand suction pipe, the tube with the formation of gas and water slurry mixture, the gas-water mixture density is lower than the Gas mixture of mud, so silt will move up on their own, while suction pipe high pressure wind outlet section above the water column from the quiescent state began to accelerate the movement, resulting in a negative pressure flow rate, the nozzle near the water and sediment sucked sand Tube, the tube of water and sediment in the high-speed airflow led along the tube flow, delivery to a predetermined location, to achieve the purpose of dredging. Practice shows that gas lifting dredging has the characteristics of simple operation, low consumption, safety, environmental protection, convenience, high efficiency, high quality and the like, and has great application and popularization value.