Multi-state undisturbed soil column infiltration simulation system and unsaturated osmotic coefficient determination method

A technology of undisturbed soil column and simulation system, applied in the field of unsaturated soil, can solve the problems that small test pieces are difficult to represent the actual situation of the soil, poor convenience, inconvenient cleaning of instruments, etc.

Inactive Publication Date: 2016-08-31
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No matter what kind of soil column is used for the test, there are still the following problems: ① The length of the single section of the soil-loading component in the soil column experiment is large, and the convenience is poor, so that the installation of the soil column is difficult, which causes inconvenience to the cleaning of the instrument; ② The installation of monitoring equipment is cumbers

Method used

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  • Multi-state undisturbed soil column infiltration simulation system and unsaturated osmotic coefficient determination method
  • Multi-state undisturbed soil column infiltration simulation system and unsaturated osmotic coefficient determination method
  • Multi-state undisturbed soil column infiltration simulation system and unsaturated osmotic coefficient determination method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0116] The multi-intensity rainfall infiltration simulation device (C) used in conjunction with the present invention is a low-intensity rainfall full infiltration simulation device (16);

[0117] With reference to Fig. 1, described low-intensity rainfall total infiltration simulation device (16) comprises the water delivery bucket (16-1) that the outside is engraved with scale, the below of water delivery bucket (16-1) passes water delivery pipe (16-12 ) is connected with the rainfall sprinkler (16-9), and the rainfall sprinkler (16-9) is arranged on the top of the cylindrical member (10) on the top of the soil column experiment standard member (4), and the inside of the cylindrical member (10) is higher than the undisturbed soil sample (12 ) is provided with a water pressure impact plate (A) at 2-5 cm on the upper surface, and a sieve hole is provided on the water pressure impact plate (A); a light Lightweight plastic sheet (16-8), described lightweight plastic sheet (16-8) ...

Embodiment 2

[0167]In the present embodiment, the multiple-intensity rainfall infiltration simulation device used in conjunction with the present invention is a medium-intensity rainfall with runoff infiltration simulation device (17);

[0168] With reference to Fig. 2, described medium-intensity rainfall has runoff infiltration simulation device (17) and comprises the rainfall container (17-9) that is arranged in cylindrical member (10) and is arranged on the circular shape that is arranged at the bottom of rainfall container (17-9). In the rainwater hole (17-10), an anti-water pressure impact plate (A) is arranged at a place 2-5 cm above the upper surface of the undisturbed soil sample (12) in the cylindrical member (10), and an anti-water pressure impact plate (A) is arranged on the anti-water pressure impact plate (A) There are sieve holes; the top of the rainfall container (17-9) is provided with a pressure control pipe (17-8) in the rainfall container and a water inlet pipe (17-7) con...

Embodiment 3

[0190] The multi-intensity rainfall infiltration simulation device (C) used in conjunction with the present invention is a high-intensity rainfall stable infiltration simulation device (14);

[0191] With reference to Fig. 3, described high-intensity rainfall stable infiltration simulation device (14) comprises the water delivery bucket (14-1) that the outside is engraved with scale, the below of water delivery bucket (14-1) passes water delivery pipe (14-12 ) is connected with the rainfall sprinkler (14-9), and the rainfall sprinkler (14-9) is arranged on the top of the cylindrical member (10) on the upper part of the soil column experiment standard member (4), and the inside of the cylindrical member (10) is higher than the undisturbed soil sample (12 ) is provided with a water pressure impact plate (A) at 2-5 cm on the upper surface, and a sieve hole is arranged on the water pressure impact plate (A); a light Lightweight plastic sheet (14-8), described lightweight plastic s...

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Abstract

The invention provides a multi-state undisturbed soil column infiltration simulation system and an unsaturated osmotic coefficient determination method. The simulation system comprises a bottom member, one or more soil column experiment standard members which are connected onto the bottom member and a multi-strength rainfall infiltration device arranged at the top of the soil column experiment standard members; a soil filling member of the simulation system is composed of a plurality of standard members and is automatically controlled by a computer; the determination of a rainfall infiltration coefficient and an osmotic coefficient is realized based on the system and testing steps and a calculation method are provided; in a determination process, a large-diameter undisturbed soil column is used for an indoor experiment and the multi-strength rainfall infiltration device is used for simulating three types of strength rainfall infiltration boundary conditions, such as low-strength rainfall whole infiltration boundary condition, a middle-strength rainfall radial flowing infiltration boundary condition and a high-strength rainfall stable infiltration boundary condition; and the multi-state undisturbed soil column infiltration simulation system has the characteristics of strong practicability, good utilization effect and convenience for popularization and utilization.

Description

technical field [0001] The invention belongs to the technical field of unsaturated soil, in particular to a multi-state undisturbed soil column infiltration simulation system and a method for measuring unsaturated permeability coefficient. Background technique [0002] Precipitation mainly refers to rainfall and snowfall. Moisture reaches the ground from the atmosphere in various forms. Other forms of precipitation include dew, frost, hail, etc. Precipitation is an important part of the hydrological cycle and the basic source of water for human beings. Precipitation data is the basis for analyzing reasonable flood and drought conditions and basin drought conditions, and is also the basis for the planning, design, management and application of water resources development and utilization, such as flood control, power generation, irrigation, etc. The process of precipitation infiltration to recharge groundwater is one of the most basic links in the "three waters" mutual conver...

Claims

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Application Information

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IPC IPC(8): G01N33/24G01N15/08G01D21/02
CPCG01D21/02G01N15/08G01N33/24G01N33/246G01N2015/0813
Inventor 王双明王生全毛正君
Owner XIAN UNIV OF SCI & TECH
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