白鹤滩水电站夹墙风管流动特性的模型试验研究（一）

Model Test Study on Flow Characteristics of Clamped Wall Duct of Baihetan Hydropower Station(one)

为满足地下水电站厂房的通风组织要求,需在厂房墙体和硐室岩体壁面之间的夹墙空间设置大量风管。为使风管安装适应岩壁锚索,提出了风管在锚索对应位置“穿孔”的解决方案。建立几何比例为1:2的夹墙风管通风流动相似试验模型,研究“穿孔”对夹墙风管通风道影响,通过试验证明了方案的可行性,并对比了风机的不同安装位置对系统风量的影响,结果表明,不同安装位置下的系统风量无明显差异。该结论可为类似工程建设提供理论支撑和设计参考。

In order to meet the ventilation requirements of each part of the underground hydropower station,a large number of air ducts should be installed in the clamped wall space between the wall of the workshop and the wall surface of the cave rock.In order to adapt the installation of the air duct to the anchor cable of rock wall,a solution for the"perforation"of the air duct at the corresponding position of the anchor cable is proposed.A similar test model for the ventilation flow of the wall duct with a geometric ratio of 1:2 was established to study the influence of"perforation"on the air duct of the wall duct.The feasibility of the scheme was proved by experiments,and the influence of different installation positions of the fan on the air volume of the system was compared.The results show that there is no significant difference in system air volume at different installation positions.This conclusion can provide theoretical support and design reference for similar projects.