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Field Survey of Turbidity during Environmental Dredging

机译:环境疏ed过程中的浊度现场调查

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摘要

To examine the turbidity diffusion suppression that occurs using the environmental dredging method, the generated turbidity accompanying waterway dredging was investigated. Five survey boats were arranged at intervals of 25 m centered on the front of a dredging boat. Turbidity was then measured at each location. Results show that highest turbidity occurs on the centerline of the dredging position. Averages of the suspended solids(SS) concentration converted from turbidity are 15.9 mg/L in the lowest layer, 4.6 to 9.4 mg/L from the lower layer to upper layer, and 1.2 mg/L in the upper layer. Based on these measurements, the generated amount of turbidity was 0.608 t/h. The standard unit of turbidity generation ωo becomes 7.13 × 10~(-3) t/m~3. When compared with the standard unit of turbidity generation of an ordinary grab dredge measured in the past, the value for the environmen- tal dredging method was almost the same as the minimum value for the ordinary grab dredge. When compared with the maximum value, the turbidity generation for the environmental dredging method was one-seventh the value of the ordinary grab.
机译:为了检查使用环境疏method方法产生的浊度扩散抑制作用,研究了伴随水道疏ed产生的浊度。以疏boat船前部为中心,以25 m的间隔布置了五艘测量船。然后在每个位置测量浊度。结果表明,最高的浊度发生在挖泥位置的中心线上。由浊度换算的悬浮固体(SS)浓度的平均值在最下层为15.9 mg / L,从下层到上层为4.6至9.4 mg / L,在上层为1.2 mg / L。基于这些测量,产生的浊度为0.608t / h。浊度产生的标准单位ωo为7.13×10〜(-3)t / m〜3。与过去测量的普通抓斗挖泥机产生的浊度的标准单位相比,环境疏ed方法的值几乎与普通抓斗挖泥机的最小值相同。当与最大值比较时,环境疏method方法产生的浊度仅为普通抓斗值的七分之一。

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  • 来源
    《World Dredging》 |2010年第6期|p.21-26|共6页
  • 作者单位

    Penta-Ocean Construction Co, Ltd., Tokyo, Japan;

    Penta-Ocean Construction Co, Ltd., Tokyo, Japan;

    Penta-Ocean Construction Co, Ltd., Tokyo, Japan;

    Penta-Ocean Construction Co, Ltd., Tokyo, Japan;

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