Measuring method of deepwater reservoir vertical direction water temperature distribution

Abstract

The invention discloses a measuring method of deepwater reservoir vertical direction water temperature distribution. Control spacing of measuring points is obtained according to measuring accuracy of an instrument, from the water depth of 10 meters to 15 meters to the bottom of a reservoir, the points are measured in every 10 meters to 15 meters, temperature gradients of the points are calculated by a method of back inserting, if the temperature gradient of a certain point is larger than 0.05 DEG C / m, the ratio of the absolute value of the difference of the temperature gradient of the certain point and that of an adjacent point to the temperature gradient of the certain point is calculated, if the ratio is larger than 15%, measuring water temperature is increased to a middle point of the certain point and the adjacent point so as to enable the water temperature of all points to satisfy the condition that the absolute value of the temperature gradient of water temperature is not more than 0.05 DEG C / m or the ratio of the absolute value of the difference of the temperature gradient of the certain point and that of the adjacent point to the temperature gradient of the certain point is not more than 15% or the spacing of the measuring points is not more than two times of the control spacing. The temperatures of all points are sequenced according to the water depth, and then the deepwater reservoir vertical direction water temperature distribution can be obtained through spline interpolation.

Description

technical field

[0001] The invention belongs to the field of water conservancy engineering and relates to a method for measuring the vertical water temperature distribution of a deep-water reservoir. Background technique

[0002] After the reservoir is built, the water flow velocity in the reservoir area will decrease, the water body replacement cycle will increase, and the heat transport process of the water body will change greatly, which will form its unique water temperature structure. For example, reservoir water temperature stratification may directly lead to water quality stratification and ecological stratification in the reservoir area, and it will affect farmland irrigation, industrial water supply, domestic water, water quality and ecological balance of downstream rivers, and water utilization in the reservoir area (breeding, entertainment) etc. have important influences. Water temperature is an extremely important factor in the water environment, an important pa...

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