CN102418331A - Control system for soil drainage of test pit with bottom - Google Patents
Control system for soil drainage of test pit with bottom Download PDFInfo
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- CN102418331A CN102418331A CN2011102234734A CN201110223473A CN102418331A CN 102418331 A CN102418331 A CN 102418331A CN 2011102234734 A CN2011102234734 A CN 2011102234734A CN 201110223473 A CN201110223473 A CN 201110223473A CN 102418331 A CN102418331 A CN 102418331A
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Abstract
The invention relates to a control system for soil drainage of a test pit with a bottom, which comprises the test pit with the bottom. A water-permeable layer is arranged at the bottom of the test pit with the bottom. A water pumping pipe is vertically arranged in the test pit. The water outlet of the water pumping pipe is connected with a water storage tank. A drainage pipe is hermetically arranged at the bottom of the water storage tank. An air pumping pipe is arranged at the mouth of the water storage tank and is connected with a water pump. When the control system for the soil drainage of the test pit with the bottom is used, the water pumping pipe is inserted into the protection pipe of the test pit to the water-permeable layer, the water pump is started and water in the water-permeable layer in the test pit can be pumped out. The control system can be moved conveniently and drainage or soil salt leaching can be conducted to different test pits and drainage can be conducted to a single test pit or several test pits at the same time.
Description
Technical field
Present technique belongs to a kind of control system that is used for agricultural experiment with drainage of soil, is particularly suitable for having the end to survey the drainage of soil in hole.
Background technology
" having the end to survey the hole " is a kind of test facilities of in the agricultural sciences observational study, using, and it is built in the field, is made up of bottom and wall, and is waterproof, and " surveying the hole " is called in the hole of shape such as same rectangle therefore.Survey the hole and be generally long 330cm, wide 200cm, the degree of depth does not wait from 180cm to 350cm because of actual demand, surveys pit edge and exceeds the about 10cm of ground surface.Survey the thick rubble of the about 10～20cm of bottom place mat in hole; The thick coarse sand in 10～20cm left and right sides, rubble upper berth is formed pervious layer (" also claiming filtration beds "); Add backfill above again; The soil identity distance just becomes complete " the having the end to survey the hole " that is used for the agricultural sciences observational study from surveying about the top edge 10cm of hole.Have the end to survey the hole and be divided into two kinds: but a kind of be that the draining that has dewatering installation has the end to survey hole (surveying the hole hereinafter to be referred as K), another kind is not have the end that has of dewatering installation to survey hole (surveying the hole hereinafter to be referred as M).K surveys bottom, hole pervious layer and is embedded with gutter; The side of surveying the hole need add to be built basement/road and is used for draining; Supporting equipment is very expensive, adds to build basement and also increase floor space, and corresponding its area of rainproof facility and expense also will increase; Its cost is much higher than M surveys the hole, receives certain limitation in the practical application.It is simple more a lot of than K survey hole that M surveys the hole, is easy to build, and expense is lower; Existing deficiency is can not natural drainage, can't solve following two practical problems: the first, and divide and can not in time discharge when excessive when surveying underground water; Can only lean on the nature evaporation and transpiration to reduce soil moisture content, process is long; The second, because of repeatedly pouring water, the soil of surveying in the hole can accumulate salinity gradually in using repeatedly; Not only influence crop growth, and directly have influence on the accuracy of test, when salt accumulation appears in general field soil; Can utilize filling drainage technique drip washing salinity, M surveys the hole but can't utilize filling drainage technique drip washing salinity, and a kind of ceramic soakaway trench insertion M survey hole that is used to extract the soil liquid of human is arranged; Utilize manual tracheae withdrawing moisture, the each extraction amount of this method only has several milliliters, far can not solve the moisture eliminating that M surveys the hole; Address this problem at present and have only a kind of method of artificial soil removal and replacement, a general soil amount of surveying the hole is at 10-20m
3, the hole is surveyed for tens at most in the several at least surveys of each test hole usually; Not only workload is big, consuming time, expense is high in artificial soil removal and replacement; And the soil physico-chemical property original with surveying the hole of the soil after changing is incomplete same, and soil texture also is destroyed, and the continuity of test receives very big influence.
Summary of the invention
The objective of the invention is, survey the drainage of soil problem in hole, provide a kind of and be used to have the end to survey the control system of hole drainage of soil for solution has the end.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
The control system that has the end to survey the hole drainage of soil includes survey hole, the end; There is the end to survey the bottom, hole and is provided with pervious layer; Survey in the hole and vertically be provided with drinking-water pipe, the water inlet of drinking-water pipe is positioned at the pervious layer place that surveys the hole, and delivery port is connected with water storing tank; The airtight gutter that is provided with in water storing tank bottom, a jar mouth is provided with exhaust tube and is connected with suction pump.
Have the end to survey the hole and vertically be provided with pillar, drinking-water pipe is located in the pillar.Drinking-water pipe uses transparent material; Aqueous vapor can occur during water deficient in the pervious layer and be drawn out of simultaneously, when the gas-vapor mix state occurring in the pipe, can close dewatering installation; Go again when treating the moisture abundance in the pervious layer and draw water, also can drinking-water pipe be moved into another survey hole and draw water.Pillar generally is embedded in the corner of surveying the hole, and the lower end is to the pervious layer of surveying the hole, and its effect is to make things convenient for drinking-water pipe to insert and prevent the soil extruding drinking-water pipe that caves in.Existing M surveys the hole can imbed pillar with the mode of punching, and newly-built M surveys the predeterminable pillar in hole.
Water storing tank jar mouth place is sealedly connected with first exhaust tube, air inlet pipe and drinking-water pipe, and tank body is respectively equipped with water level inductor up and down, water level inductor is connected with ground wire and with the first control circuit device down.
Electromagnetic valve is installed on first exhaust tube, air inlet pipe and the gutter and is connected with the first control circuit device.
Electromagnetic valve on first control circuit device control connection first exhaust tube, air inlet pipe and the gutter is with the last water level inductor of control connection and the dewatering installation of following water level inductor formation native system.
First exhaust tube is connected with surge flask.
Surge flask is provided with second exhaust tube and is connected with suction pump, and the surge flask bottle is provided with water level inductor and ground wire, and second exhaust tube is provided with pressure limiting valve, and water level inductor, suction pump and ground wire are connected with the second control circuit device.When occurring unexpected ponding in the surge flask and rising to water level inductor; Water level inductor and ground conductive, second control circuit device control suction pump is shut down, and prevents to damage suction pump because of moisture sucks; Realize the automatic protection of suction pump, can rework after ponding is outwelled in the surge flask.Suction pump can be vacuum pump or submersible pump.
Second control circuit device and water level inductor, suction pump and ground wire be connected to control connection.
First exhaust tube is a tee piece, connects a plurality of dewatering installations with mode arranged side by side.
Electromagnetic valve on the first circuit control device control connection, first exhaust tube, air inlet pipe and the gutter; With the last water level inductor of control connection and the dewatering installation of following water level inductor structure cost control system, the power set of second circuit control device control connection water level inductor, suction pump and ground wire structure cost control system.Dewatering installation is removable, drinking-water pipe is moved in arbitrary survey hole carry out pump drainage water as required.Power set can join with one or more dewatering installations, drive one or more dewatering installations simultaneously and implement draining.
Adopt technical scheme of the present invention, can move dewatering installation or control system easily, as required different M is surveyed the hole and carry out the draining or the soil desalinization of soil by flooding or leaching; Existing M surveys to cheat and need not change, and only needs in surveying the hole, establish a pillar, is used for the drinking-water pipe insertion and gets final product; The quantity of dewatering installation is unrestricted, can single or several surveys cheat draining simultaneously; K surveys and cheats when the draining fault occurring, also can use native system, only needs in surveying the hole, make a call to a vertical hole, and the insertion drinking-water pipe can be implemented draining.What this control system used all is conventional components, does not need special production equipment and condition, produces easily.
Description of drawings:
Fig. 1 is the structure chart of drainage system of the present invention;
Fig. 2 is the operating principle block diagram of self-draining arrangement of the present invention;
Fig. 3 is the theory diagram of power set suction pump automatic protection functions of the present invention.
The specific embodiment:
Below in conjunction with embodiment the present invention is further specified.
Embodiment 1:
Have the end to survey the draining in hole: as shown in Figure 1, drinking-water pipe 4 vertical insertions are surveyed in 1 pillar 3 of hole, make water inlet be positioned at pervious layer 2 places that survey hole 1; The airtight water storing tank 5 that is connected to of delivery port, water storing tank are selected transparent material for use, and first exhaust tube 8 of jar mouth is directly connected on the vacuum pump 21; Earlier the gutter 10 of water storing tank 5 bottoms is closed energized, open vacuum pump 21 during use; Produce negative pressure in the water storing tank 5, the water of pervious layer 2 gets into water storing tanks 5 through drinking-water pipe 4, when the powered-down during near first exhaust tube, 8 mouths of pipe of the water yield in the water storing tank 5; The gutter 10 of water storing tank 5 is opened, discharged jar interior water, close gutter 10 then; The open vacuum pump 21 again, continue to draw water-drainage procedure, and moisture has been arranged in surveying hole 1 pervious layer 2.
Embodiment 2:
There is the end to survey the soil desalinization of soil by flooding or leaching in hole: as shown in Figure 1; Drinking-water pipe 4 vertically is located in the pillar 3 of surveying hole 1, makes water inlet be positioned at pervious layer 2 places that survey hole 1, airtight connection drinking-water pipe 4, air inlet pipe 6, first exhaust tube 8 and gutter 10 on the water storing tank 5; Tank body is provided with water level inductor 12, following water level inductor 13 and ground wire 15; Air inlet pipe 6 is provided with electromagnetic valve 7, the first exhaust tubes 8 and is provided with electromagnetic valve 9, and gutter 10 is provided with electromagnetic valve 11.Electromagnetic valve 7, electromagnetic valve 9, electromagnetic valve 11 and ground wire 15 are connected with first control circuit device 14; The gas outlet of surge flask 18 airtight connection first exhaust tubes 8 and the air inlet port of second exhaust tube 16; Bottle is provided with water level inductor 19 and ground wire 22; Second exhaust tube 16 is provided with pressure limiting valve 17 and is connected with suction pump 21, and water level inductor 19, ground wire 22 and suction pump 21 are connected with second control circuit device 20.First control circuit device 14 and electromagnetic valve 7, electromagnetic valve 9, electromagnetic valve 11, go up water level inductor 12, water level inductor 13 and ground wire 15 is connected to control connection, the dewatering installation of structure cost control system, the i.e. part of frame of broken lines 24 among Fig. 1 down.Second control circuit device 20 and water level inductor 19, ground wire 22 and suction pump be connected to control connection, the power set of structure cost control system.
During enforcement, at first in surveying hole 1, irritate sufficient water, ooze to pervious layer 2 under the moisture warp, with drinking-water pipe 4 vertical insertions in the pillar 3 of surveying hole 1; Make water inlet be positioned at the pervious layer 2 of surveying the hole, energized is opened suction pump 21, under the effect of first control circuit device 14; Electromagnetic valve 9 is opened, and electromagnetic valve 11 cuts out with electromagnetic valve 7, and the water of surveying hole pervious layer 2 gets into water storing tank 5 through drinking-water pipe 4; When water level rose to water level inductor 12 in jar, first control circuit device 14 control electromagnetic valve 9 were closed, and electromagnetic valve 11 is opened with electromagnetic valve 7; Water in the water storing tank 5 are discharged from gutter 10, realize one and draw water-drainage procedure, when water level is reduced to down water level inductor 13 when following; First control circuit device 14 control electromagnetic valve 7 are closed with electromagnetic valve 11, open electromagnetic valve 9 simultaneously, begin once more to draw water.Following infiltration in the hole to be measured 1 divides arrange, and in surveying hole 1, pour water again and take out once more-draining, three times repeatedly " pour water-drawing water-draining " processes, most of salinity that survey is cheated in 1 soil can be gone out by drip washing, and soil reaches and can use standard.
The native system operating principle: when energized was opened suction pump 21, the first control circuit device 14 controls first exhaust tube electromagnetic valve 9 was opened, and gutter electromagnetic valve 11 cuts out with air inlet pipe electromagnetic valve 7; Produce negative pressure in the water storing tank 5, the water of surveying hole 1 pervious layer 2 gets into water storing tank 5 through drinking-water pipe 4, when water storing tank 5 water levels rise to water level upper limit induction installation 12; Induction installation 12 and ground wire 15 conductings, first control circuit device 14 control exhaust tube electromagnetic valves 9 cut out, and gutter electromagnetic valve 11 is opened with air inlet pipe electromagnetic valve 7; The water of water storing tank 5 is discharged from gutter 10; When water level is reduced to down water level inductor 13 when following, induction installation 13 and ground wire 15 not conductings, first control circuit device 14 control electromagnetic valve 7 are closed with electromagnetic valve 11; Open electromagnetic valve 9 simultaneously; Draw water-drainage procedure begins once more, realizes automatic draining, and operating principle is seen Fig. 2; Air pressure during water storing tank 5 drainings in second exhaust tube 16 changes, and pressure limiting valve 17 is adjusted air pressure voluntarily, guarantees that suction pump 21 is in normal operating conditions; If surge flask 18 is when making bottle interior ponding to water level inductor 19 because of certain reason; Water level inductor 19 and ground wire 22 conductings; Second control circuit device 20 control suction pumps 21 are out of service, realize the automatic protection of suction pump 21, and are artificial with after moisture is outwelled in the surge flask 18; Can work on, principle is seen accompanying drawing 3.
Embodiment 3:
A plurality of surveys hole drainings: three ports of first exhaust tube 8 connect a plurality of dewatering installations 23 etc. successively, and 24 frames of dotted line partly are provided with identically among each dewatering installation and Fig. 1, and the drinking-water pipe with different dewatering installations during use inserts respectively in the interior pillar in different survey holes; Water inlet is positioned at the pervious layer place that surveys the hole, and energized is opened suction pump 21; Under the effect of first control circuit device 14, the first exhaust tube electromagnetic valve 9 is opened, and gutter electromagnetic valve 11 cuts out with air inlet pipe electromagnetic valve 7; Produce negative pressure in the water storing tank 5, the water of surveying hole 1 pervious layer 2 gets into water storing tank 5 through drinking-water pipe 4, when water level rises to water level inductor 12 in jar; First control circuit device 14 control electromagnetic valve 9 are closed, and electromagnetic valve 11 is opened with electromagnetic valve 7, and the water in the water storing tank 5 is discharged from gutter 10; When water level is reduced to down water level inductor 13 when following; First control circuit device 14 control electromagnetic valve 7 are closed with electromagnetic valve 11, open electromagnetic valve 9 simultaneously, draw water-drainage procedure begins once more.
When the water storing tank draining of a dewatering installation, the water storing tank of other dewatering installation can continue to draw water or draining simultaneously, and is unaffected each other; When the gas-vapor mix state in drinking-water pipe, occurring, in time close dewatering installation, when treating that moisture in the pervious layer is sufficient again row draw water, or drinking-water pipe is moved into another survey the hole and draw water.
When only being used for draining, the moisture of surveying the hole pervious layer arrange and can have been stopped that this surveys hole dewatering installation moves or drinking-water pipe is gone to another survey cheating and working on; When a certain survey hole needs the timesharing of drip washing salt, adopt the method for embodiment 2 to carry out " pour water-drawing water-draining " process repeatedly for three times and can reach requirement.
In the surge flask 18 during ponding to water level inductor 19; Water level inductor 19 and ground wire 22 conductings, second control circuit device 20 control suction pumps 21 are out of service, realize the automatic protection of suction pump 21; Artificial with after moisture is outwelled in the surge flask, can work on.
Claims (9)
1. one kind is used to have the end to survey the control system of hole drainage of soil; Include survey hole, the end, have the end to survey the bottom, hole and be provided with pervious layer, it is characterized in that: survey vertically is provided with drinking-water pipe in the hole; The water inlet of drinking-water pipe is positioned at the pervious layer place that surveys the hole; Delivery port is connected with water storing tank, the airtight gutter that is provided with in water storing tank bottom, and a jar mouth is provided with exhaust tube and is connected with suction pump.
2. the control system that is used to have end survey hole drainage of soil as claimed in claim 1 is characterized in that: said have survey hole, the end vertically to be provided with pillar, and drinking-water pipe is located in the pillar.
3. the control system that is used to have end survey hole drainage of soil as claimed in claim 1; It is characterized in that: said water storing tank jar mouth place is sealedly connected with first exhaust tube, air inlet pipe and drinking-water pipe, and tank body is respectively equipped with water level inductor up and down and is connected with following water level inductor and with the first control circuit device.
4. as claimed in claim 3ly be used to have the control system that the end surveys the hole drainage of soil, it is characterized in that: electromagnetic valve is installed on said first exhaust tube, air inlet pipe and the gutter and is connected with the first control circuit device.
5. the control system that is used to have end survey hole drainage of soil as claimed in claim 4; It is characterized in that: the electromagnetic valve on said first control circuit device control connection first exhaust tube, air inlet pipe and the gutter, with the last water level inductor of control connection and the dewatering installation of following water level inductor formation native system.
6. the control system that is used to have end survey hole drainage of soil as claimed in claim 5, it is characterized in that: said first exhaust tube is connected with surge flask.
7. the control system that is used to have end survey hole drainage of soil as claimed in claim 6; It is characterized in that: said surge flask is provided with second exhaust tube and is connected with said suction pump; The surge flask bottle is provided with water level inductor; Second exhaust tube is provided with pressure limiting valve, and water level inductor is connected with the second control circuit device with suction pump.
8. as claimed in claim 7ly be used to have the control system that the end surveys the hole drainage of soil, it is characterized in that: said second control circuit device and water level inductor and suction pump be connected to control connection.
9. the control system that is used to have end survey hole drainage of soil as claimed in claim 3, it is characterized in that: said first exhaust tube is a tee piece, connects a plurality of dewatering installations with mode arranged side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102234734A CN102418331B (en) | 2011-08-05 | 2011-08-05 | Control system for soil drainage of test pit with bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102234734A CN102418331B (en) | 2011-08-05 | 2011-08-05 | Control system for soil drainage of test pit with bottom |
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| Publication Number | Publication Date |
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| CN102418331A true CN102418331A (en) | 2012-04-18 |
| CN102418331B CN102418331B (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102234734A Expired - Fee Related CN102418331B (en) | 2011-08-05 | 2011-08-05 | Control system for soil drainage of test pit with bottom |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH119122A (en) * | 1997-06-19 | 1999-01-19 | Nakaji Wada | Catch basin, construction of drainage system using the same |
| JP3381991B2 (en) * | 1993-12-28 | 2003-03-04 | 中央開発株式会社 | Water permeability measuring apparatus and water permeability measuring method using the same |
| CN2870445Y (en) * | 2005-12-12 | 2007-02-21 | 武汉大学 | Underground automatic water drainer with water-supply function for steam infiltration measuring pit |
| CN201247236Y (en) * | 2008-08-22 | 2009-05-27 | 中国农业科学院农田灌溉研究所 | Bottom drainage vaporizing penetrating apparatus |
| CN201671090U (en) * | 2010-04-27 | 2010-12-15 | 武汉大学 | Drainage water level controller for farmland subsurface tube |
| CN102047833A (en) * | 2010-09-25 | 2011-05-11 | 长江大学 | Waterlogging simulation test system for rainfed cropland |
| CN202170503U (en) * | 2011-08-05 | 2012-03-21 | 中国农业科学院农田灌溉研究所 | Control system for soil drainage of bottomed test pit |
-
2011
- 2011-08-05 CN CN2011102234734A patent/CN102418331B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3381991B2 (en) * | 1993-12-28 | 2003-03-04 | 中央開発株式会社 | Water permeability measuring apparatus and water permeability measuring method using the same |
| JPH119122A (en) * | 1997-06-19 | 1999-01-19 | Nakaji Wada | Catch basin, construction of drainage system using the same |
| CN2870445Y (en) * | 2005-12-12 | 2007-02-21 | 武汉大学 | Underground automatic water drainer with water-supply function for steam infiltration measuring pit |
| CN201247236Y (en) * | 2008-08-22 | 2009-05-27 | 中国农业科学院农田灌溉研究所 | Bottom drainage vaporizing penetrating apparatus |
| CN201671090U (en) * | 2010-04-27 | 2010-12-15 | 武汉大学 | Drainage water level controller for farmland subsurface tube |
| CN102047833A (en) * | 2010-09-25 | 2011-05-11 | 长江大学 | Waterlogging simulation test system for rainfed cropland |
| CN202170503U (en) * | 2011-08-05 | 2012-03-21 | 中国农业科学院农田灌溉研究所 | Control system for soil drainage of bottomed test pit |
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| CN102418331B (en) | 2013-11-20 |
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