在江河中进行流量测验时,为了使流速仪能够稳定在测量位置上,就必须使用具有足够重量的铅鱼来克服水流的冲击力。而恰当地决定铅鱼的使用重量,又是考虑水文测验设备规模大小的先决条件。对此问题近年来已引起了有关人员的注意,并发表过一些文章。本文打算根据广东省水文总站的一些实践经验就如何 In flow tests in rivers, in order for the meter to stabilize at the measurement site, a sufficient weight of lead fish must be used to overcome the impact of the water flow. The proper determination of the weight of lead fish is also a prerequisite for considering the size of hydrographic test equipment. In recent years, this issue has drawn the attention of relevant personnel and published some articles. This article is based on some practical experience of Guangdong Provincial Hydrological Station on how