Falling head multifunctional permeation experiment device

Abstract

The utility model relates to a water-saving penetration test device, in particular to a falling head multifunctional penetration test device, which has multiple functions by increasing the lifting function of a water supply system. A soil column embedding system is additionally arranged, so that the penetration test of undisturbed soil is realized; and the self-circulation of test water is realized by additionally arranging a water pump. The falling head multifunctional penetration test device comprises a bracket, a water supply device, a permeation test column and a data acquisition device; the water supply device, the permeation experiment column and the data acquisition device are all mounted on the bracket; the water supply device is connected with the permeation experiment column through a water pipe; the permeation experiment column is connected with the data acquisition device through a water pipe; the support is made of 304 stainless steel and comprises an adjustable lifting frame, an operation platform and a supporting frame, the adjustable lifting frame is arranged on the left side of the support, the supporting frame is arranged on the right side of the support, the operation platform is arranged between the adjustable lifting frame and the supporting frame, the upper water tank is installed at the upper end of the adjustable lifting frame, and the adjustable lifting frame is provided with N height gears. The purpose is to realize height adjustment of the position of the upper water tank and meet the requirement of a falling head test. The permeation experiment column is mounted on the operation platform.

Description

technical field [0001] The invention relates to a water-saving penetration test device, in particular to a variable water head multifunctional penetration test device. Background technique [0002] The indoor permeability test device is a common scientific test device in soil mechanics, hydrogeology, engineering geology and other disciplines, and is usually used to measure the permeability characteristics of rock and soil. The traditional infiltration test device has the disadvantages of fixed location of the water supply tank, difficulty in controlling the infiltration flow rate, and single function, resulting in repeated construction of the test device and waste of water resources, and the infiltration test of undisturbed soil samples cannot be completed. There are mainly two types of test devices used in existing projects or laboratories to measure permeability characteristics. One is a simple Darcy instrument, which is mainly used to measure the permeability coefficient ...

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Problems solved by technology

The traditional permeation test device has the disadvantages of fixed location of the water supply tank, difficulty in controlling the infiltration flow rate, and single function, resulting in repeated construction of the test device and waste of water resources, and the infiltration test of the undisturbed soil sample cannot be completed.

There are mainly two types of test devices used in existing projects or laboratories to measure permeability characteristics. One is a simple Darcy instrument, which is mainly used to measure the permeability coefficient of remodeled soil, such as the TST70 type used for constant head permeability tests. Osmometer such as figure 1 , the disadvantage is that it is necessary to manually adjust the valve to control the water intake, and the existing valve is difficult to rotate, and it is difficult to accurately control the flow rate. Another disadvantage is that the position of the water supply tank is fixed, and the water level cannot be adjusted; Penetration test; the other is based on a self-made simple penetrometer, which uses a self-made soil column to take undisturbed soil samples on site, and then transports them back to the laboratory for infiltration tests. The advantage is that the undisturbed soil can be used for infiltration tests, but the disadvantage is that the permeability coefficient cannot be measured

Furthermore, the traditional percolation and leaching test device cannot realize the self-circulation of test water, resulting in waste of water resources

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