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Economical adjustable underground water level lysimeter

A groundwater level, adjustable technology, applied in the field of lysimeters, can solve the problems of destructive soil environment, inconvenient popularization and difficult construction, etc., and achieve the effect of wide application range, simple structure and low cost

Inactive Publication Date: 2015-06-10
SHANXI INST OF WATER RESOURCES & HYDROPOWER RESERACH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional pit-type underground lysimeter is a non-weighing lysimeter, but like the weighing lysimeter, an underground observation room is generally required, which is destructive to the soil environment, has a complex structure, and is difficult to construct. , expensive, high operating costs, inconvenient for popular use

Method used

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  • Economical adjustable underground water level lysimeter
  • Economical adjustable underground water level lysimeter

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Embodiment Construction

[0021] This embodiment provides an economical and practical adjustable groundwater level lysimeter, which consists of a lysimeter 1, an observation tube 3 and an automatic water supply and drainage system.

[0022] The lysimeter tank 1 is composed of a tank body 11 , a reverse filter layer 12 arranged at the inner bottom of the tank body 11 , backfill soil (backfilled into the tank body 11 ), and water supply and drainage pipes 14 . The observation cylinder 3 is used to place the automatic water supply and drainage system, and communicates with the lysimeter 1 through the water supply and drainage pipeline 14; Cup 22, adjustable lifting device 23 constitutes, and described water level balance cup 22 is the device that controls water level height and collects drainage.

[0023] The size of the lysimeter 1 is determined according to the requirements of the test, and the height is determined according to the activity range of the local groundwater level. It is necessary to ensure...

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Abstract

The invention provides an economical adjustable underground water level lysimeter. The economical adjustable underground water level lysimeter is composed of a lysimeter box, an observation cylinder and an automatic water supply and discharge system, wherein the lysimeter box is composed of a box body, an inverted filter arranged on the bottom of the interior of the box body, and backfill, the observation cylinder is used for accommodating the automatic water supply and discharge system and communicated with the lysimeter box through a water supply and discharge pipeline, a discharged water receiving cylinder is arranged on the bottom of the interior of the observation cylinder, the automatic water supply and discharge system comprises an adjustable lifting and hoisting device, one or more Markov bottles marked with scales and connected in series and a water level balancing cup are arranged in the adjustable lifting and hoisting device side by side, three pipelines are arranged on the bottom of the water level balancing cup and are communicated with the lysimeter box, the one or more Markov bottles and an overflow pipe respectively, an upper opening of the overflow pipe is flush with a control water line, an upper port of the water level balancing cup is communicated with the atmosphere, and a lower port of the overflow pipe is communicated with the interior of the discharged water receiving cylinder. The economical adjustable underground water level lysimeter is simple in structure, convenient to install, low in manufacturing cost, wide in application range, reasonable in design and easy to operate, and data are accurate and reliable.

Description

technical field [0001] The invention relates to fields of hydrology and water resources, forestry, meteorology, ecology, etc., and is a lysimeter for measuring transpiration of crops, trees, grassland, etc., and soil phreatic evaporation. Background technique [0002] Lysimeters are divided into weighing lysimeters and non-weighing lysimeters. Weighing lysimeters include mechanical, hydraulic and electronic weighing. The traditional pit-type underground lysimeter is a non-weighing lysimeter, but like the weighing lysimeter, an underground observation room is generally required, which is destructive to the soil environment, has a complex structure, and is difficult to construct. , expensive, high operating costs, and inconvenient for popular use. Contents of the invention [0003] In order to solve the defects and deficiencies of the existing technology, the purpose of the present invention is to provide a simple structure, easy to use, low cost, wide application range, r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N33/24G01N15/08
Inventor 王永红孟国霞孙小平罗朋牛永华张小明
Owner SHANXI INST OF WATER RESOURCES & HYDROPOWER RESERACH
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