CN102331335B - Sand launder test apparatus of first type boundary of underground water - Google Patents

Sand launder test apparatus of first type boundary of underground water Download PDF

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Publication number
CN102331335B
CN102331335B CN 201110197979 CN201110197979A CN102331335B CN 102331335 B CN102331335 B CN 102331335B CN 201110197979 CN201110197979 CN 201110197979 CN 201110197979 A CN201110197979 A CN 201110197979A CN 102331335 B CN102331335 B CN 102331335B
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China
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groove
water
tank
communicated
dividing plate
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Expired - Fee Related
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CN 201110197979
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CN102331335A (en
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曹彭强
陶月赞
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曹彭强
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Priority to CN 201110197979 priority Critical patent/CN102331335B/en
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Abstract

The invention discloses a sand launder test apparatus of a first type boundary of underground water. The test apparatus comprises a water tank and a reservoir. Two separator plates are arranged in the water tank to make the water tank be divided into a tank head, a tank body and a tank tail. A narrow slit water inlet is opened at one separator plate between the tank head and the tank body and a plurality of water pores are opened at the other separator plate between the tank body and the tank tail. Medial surfaces of the separator plates are provided with filter screens. Upper ends of the tank head and the tank tail are respectively communicated with inlet pipes; and lower ends of the tank head and the tank tail are respectively communicated with outlet pipes; the other ends of the inlet pipes and the outlet pipes are communicated with the reservoir; water level adjustment tanks are respectively communicated with the tank head and the tank tail through flexible pipes; and the water level adjustment tanks can be installed by up and down free moving mode. The water return pipes are communicated with the flexible pipes and the other ends of the water return pipes are communicated with the reservoir. A plurality of holes are opened at the bottom of the tank body and a pressure measurement pipe is connected with the holes. According to the invention, the structure of the apparatus is designed to be simple and real-time measurement can be carried out on a seepage field in a porous medium; meanwhile, it is convenient to carry out an on-site installation test with flexible and convenient operation; moreover, a test result has a high precision.

Description

Underground water one class border sand launder test unit
Technical field
The present invention relates to a kind of sand launder experimental provision, mainly is a kind of underground water one class border sand launder test unit.
Background technology
Because relate to the not intellectual of water table, a class boundary vicinity ground water movement rule is a difficult point in the groundwater dynamics subject always, the research of moving about Unsaturated groundwater does not stop always.Address the above problem normal operation analytical method, numerical method and simulation, can find the solution with existing analytical method for the Seepage problems of simple condition situation, can only solve with numerical method and simulation for the Seepage problems than the complex geological conditions condition.Simulation can be reproduced seepage flow dynamically and process, and the physical phenomenon that can check basic theories and observation flow event to occur, is the indispensable research means of scientific worker.Existing analog study Unsaturated groundwater moves topmost method for being the sand launder simulation, existing sand launder experimental provision all can only be simulated a class border to the whole structure of porous medium impact, and can not observe the impact of the border water inlet stream field on a certain height and position.
Summary of the invention
Technical matters to be solved by this invention provides a kind of underground water one class border sand launder test unit, and it can be measured in real time to seepage field in the porous medium, is convenient to simultaneously carry out on-the-spot installation test, flexible and convenient operation.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of underground water one class border sand launder test unit, include tank, cistern, be provided with two dividing plates in the described tank tank is divided into groove head, groove body and groove tail, dividing plate between described groove head and the groove body is the narrow slit dividing plate, have a narrow slit water inlet on the narrow slit dividing plate, the narrow slit water inlet is equipped with the sealing slot, and the dividing plate between described groove body and the groove tail is the cellular type dividing plate, have a plurality of water holes on the cellular type dividing plate, the medial surface of described narrow slit dividing plate and cellular type dividing plate is equipped with screen pack; Described groove upper end first and the groove tail is communicated with respectively water inlet pipe, groove lower end first and the groove tail is communicated with respectively rising pipe, the other end of described water inlet pipe, rising pipe all is communicated with cistern, on the water inlet pipe of described groove head gate valve is installed, and on the rising pipe of described groove tail flowmeter is installed; Also by soft pipe connection the water level regulating tank is arranged respectively on described groove head and the groove tail, described water level regulating tank can upper and lowerly move freely installation, is communicated with return pipe on the described flexible pipe, and the other end of return pipe is communicated with cistern; The bottom of described groove body has a plurality of holes, and described hole is connected with piezometric tube; The inherent narrow slit of described groove body water inlet is provided with the tracer agent release position.
Described two water inlet pipes are connected with a water inlet manifold, and water pump is installed on the water inlet manifold; Described two rising pipes are communicated with a total rising pipe, are separately installed with gate valve on described two rising pipes.
Described narrow slit dividing plate is assembled by a plurality of plates, has the narrow slit water inlet on one of them plate, can as required the plate with the narrow slit import be placed in arbitrary position.
Described screen pack adopts the stainless steel screen pack.
Evenly arrange in a plurality of water holes on the described cellular type dividing plate.
The dead ahead of described groove body is provided with video camera and camera.
Middle slot head of the present invention can the quick adjustment sand launder water inlet water level, and it is constant to keep water level; The groove body can be filled the medium of different-grain diameter, and the narrow slit water inlet of groove body water inlet can be regulated differing heights as required; The groove tail can quick adjustment sand launder water outlet water level, and it is constant to keep water level; Cistern can provide experimental water, and collects water outlet and go back to carry out recycling;
The cell body of whole tank is sticked with by organic glass among the present invention.Make the water level of the first water level regulating tank of groove be higher than the water level of groove tailwater level regulating tank by adjusting, make in the medium that the groove body is filled and form hydraulic gradient, so that water enters groove body medium through groove head, go out from the groove wake flow, the simulate formation water movement, the tracer agent release position is established in narrow slit water inlet in the water inlet of groove body, the fluidised form of namely diving under water under the different moment of Observable, the various boundary.
Operation steps of the present invention is:
Fill the sand sample of required particle diameter at the groove body, close the gate valve of the first water inlet pipe of locked groove, close the sealing slot of narrow slit water inlet, close locked groove tail rising pipe gate valve.
The height of the first water level regulating tank of regulating tank and the height of groove tailwater level regulating tank, so that the height of two water level regulating tanks is consistent, the water of cistern enters the groove tail through water pump, water level is with after the groove tailwater level is consistent to the groove body sand sample, backwater enters cistern by groove tailwater level regulating tank, the backwater of groove tailwater level regulating tank is in steady state (SS), and the water level of groove body and groove tail remains unchanged.
Slowly open the gate valve of the first water inlet pipe of groove, the water of cistern enters groove head, and with after the groove body is consistent, backwater enters cistern through groove head water level regulating tank until the first water level of groove.
Open the sealing draw-in groove of narrow slit water inlet, open simultaneously groove tail rising pipe gate valve.
Behind groove body stable level, place tracer agent.
Take the tracer agent transport conditions, the measuring cell water level of track body, track tail water flow meter water yield data.
The cell body of experimental trough of the present invention is that transparent material is made, and convenience also makes things convenient for video camera and camera to the shooting record of flow event to the observation of the change procedure of trough inner water position; The narrow slit dividing plate can be regulated according to different demands the height of narrow slit, designs different flow conditions, and the percolation law that a class boundary vicinity is dived under water is further studied in the variation of research differing heights narrow slit water inlet stream field; Groove body bottom connects measuring cell, can be in experimentation the real time record water level; Adopt video camera and camera that experimentation is carried out omnidistance record, can accurately distinguish and analyze the Characteristics of Development of seepage flow, and can repeatedly analyze experimental phenomena, improve the degree of accuracy of experimental result.
Advantage of the present invention is:
Structural design of the present invention is simple, but can measure in real time seepage field in the porous medium, is convenient to simultaneously carry out on-the-spot installation test, flexible and convenient operation.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of narrow slit dividing plate among the present invention.
Fig. 3 is the structural representation of sealing socket portion on the narrow slit dividing plate
Fig. 4 is the structural representation of central hole type dividing plate of the present invention.
Embodiment
Referring to Fig. 1, a kind of underground water one class border sand launder test unit, include cistern 4 and tank, be provided with two dividing plates in the described tank tank is divided into groove head 1, groove body 2 and groove tail 3, dividing plate between described groove first 1 and the groove body 2 is narrow slit dividing plate 5, have a narrow slit water inlet 7 on the narrow slit dividing plate 5, the narrow slit water inlet is equipped with sealing slot 8, dividing plate between described groove body 2 and the groove tail 3 is cellular type dividing plate 6, have a plurality of water holes 9 on the cellular type dividing plate 6, the medial surface of described narrow slit dividing plate 5 and cellular type dividing plate 6 is equipped with screen pack 10; The upper end of described groove first 1 and groove tail 3 is communicated with respectively water inlet pipe 11, the lower end of groove first 1 and groove tail 3 is communicated with respectively rising pipe 12, the other end of described water inlet pipe 11, rising pipe 12 all is communicated with cistern 4, gate valve 13 is installed on the water inlet pipe of described groove head 1, on the rising pipe 12 of described groove tail 3 flowmeter 14 is installed; Also be communicated with water level regulating tank 16 by flexible pipe 15 respectively on described groove first 1 and the groove tail 3, described water level regulating tank 16 can upper and lowerly move freely installation, is communicated with return pipe 17 on the described flexible pipe 15, and the other end of return pipe 17 is communicated with cistern 4; The bottom of described groove body 2 has a plurality of holes 18, and described hole 18 is connected with piezometric tube; Described groove body 2 inherent narrow slit water inlets are provided with tracer agent release position 19.
Described two water inlet pipes 11 are connected with a water inlet manifold 20, and water pump 21 is installed on the water inlet manifold 20; Described two rising pipes 12 are communicated with a total rising pipe 22, are separately installed with gate valve 23 on described two rising pipes 12.
Described narrow slit dividing plate 5 has narrow slit water inlet 7 by a plurality of plate 24 assemblings on one of them plate, can as required the plate with the narrow slit import be placed in arbitrary position.
Described screen pack 10 adopts the stainless steel screen pack.
Evenly arrange in a plurality of water holes 9 on the described cellular type dividing plate 6.
Middle slot head of the present invention, groove body, groove tail and narrow slit dividing plate, cellular type dividing plate are all made by the organic glass of thick 2.0cm, the water level regulating tank is made by the organic glass of thick 1.0cm, the narrow slit dividing plate is comprised of one group of poly (methyl methacrylate) plate of 9 wide 10.0cm and 1 9.0cm, the wide 1.0cm of narrow slit; The water hole is of a size of 5 * 10mm on the cellular type dividing plate, and pitch-row is 5mm, and evenly distributes..
Groove height is 1.0m, wide 0.4m, long 1.0m, and groove head is of a size of high 1.0m, wide 0.4m, long 0.2m, and the groove tail is of a size of high 1.0m, wide 0.4m, long 0.2m, and cistern is of a size of long 2.0m, wide 2.0m.
Groove body bottom is every the 5.0cm perforate, and the aperture is 5.0mm, and the hole is connected with piezometric tube with internal diameter 5.0mm flexible pipe, and piezometric tube is made by internal diameter 5.0mm glass tube, and piezometric tube is outer with scale.
Water inlet pipe, rising pipe and return pipe are made with DN25 U-PVC pipe; Water pump adopts 32FP plastic noncorrosive pump; Gate valve adopts the U-PVC gate valve.Flowmeter adopts the DN40 electronic flowmeter.

Claims (6)

1. underground water one class border sand launder test unit, include tank, cistern, it is characterized in that: be provided with two dividing plates in the described tank tank is divided into groove head, groove body and groove tail, dividing plate between described groove head and the groove body is the narrow slit dividing plate, have a narrow slit water inlet on the narrow slit dividing plate, the narrow slit water inlet is equipped with the sealing slot, dividing plate between described groove body and the groove tail is the cellular type dividing plate, have a plurality of water holes on the cellular type dividing plate, the medial surface of described narrow slit dividing plate and cellular type dividing plate is equipped with screen pack; Described groove upper end first and the groove tail is communicated with respectively water inlet pipe, groove lower end first and the groove tail is communicated with respectively rising pipe, the other end of described water inlet pipe, rising pipe all is communicated with cistern, on the water inlet pipe of described groove head gate valve is installed, and on the rising pipe of described groove tail flowmeter is installed; Also by soft pipe connection the water level regulating tank is arranged respectively on described groove head and the groove tail, described water level regulating tank can upper and lowerly move freely installation, is communicated with return pipe on the described flexible pipe, and the other end of return pipe is communicated with cistern; The bottom of described groove body has a plurality of holes, and described hole is connected with piezometric tube; The inherent narrow slit of described groove body water inlet is provided with the tracer agent release position.
2. a kind of underground water one class border sand launder test unit according to claim 1, it is characterized in that: described two water inlet pipes are connected with a water inlet manifold, and water pump is installed on the water inlet manifold; Described two rising pipes are communicated with a total rising pipe, are separately installed with gate valve on described two rising pipes.
3. a kind of underground water one class border sand launder test unit according to claim 1, it is characterized in that: described narrow slit dividing plate is assembled by a plurality of plates, have the narrow slit water inlet on one of them plate, can as required the plate with the narrow slit import be placed in arbitrary position.
4. a kind of underground water one class border sand launder test unit according to claim 1 is characterized in that: described screen pack employing stainless steel screen pack.
5. a kind of underground water one class border sand launder test unit according to claim 1, it is characterized in that: evenly arrange in a plurality of water holes on the described cellular type dividing plate.
6. a kind of underground water one class border sand launder test unit according to claim 1, it is characterized in that: the outside of described groove body is provided with over against the video camera of groove body and camera.
CN 201110197979 2011-07-15 2011-07-15 Sand launder test apparatus of first type boundary of underground water Expired - Fee Related CN102331335B (en)

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Application Number Priority Date Filing Date Title
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CN104296962B (en) * 2014-10-23 2017-06-30 东北石油大学 Measure the viscosity factor and inertial resistance coefficient experimental provision of porous media
CN105301058A (en) * 2015-10-14 2016-02-03 成都理工大学 Imaging testing system for monitoring pollution dynamic condition of underground water and monitoring method of pollution dynamic condition of underground water
CN105424908B (en) * 2015-11-16 2017-03-15 河海大学常州校区 A kind of water tank device of dredging markets underwater experiment
CN105547636B (en) * 2015-12-09 2017-12-12 常熟理工学院 Ripples and current towards snake-shaped robot underwater exercise performance generate system
CN106370803B (en) * 2016-08-30 2018-10-23 河海大学 A kind of interior phreatic zone local ground watering generates the circulatory system and operating method
CN110196151B (en) * 2019-06-04 2020-12-25 成都理工大学 Diving motion energy loss measuring instrument and method

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CN2747565Y (en) * 2004-07-23 2005-12-21 浙江大学 Stoplog type self-circulation open ditch experiment trough
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CN2747565Y (en) * 2004-07-23 2005-12-21 浙江大学 Stoplog type self-circulation open ditch experiment trough
CN101556269A (en) * 2009-05-19 2009-10-14 中国地质大学(武汉) Trough for simulating groundwater pollution
CN101561344A (en) * 2009-05-26 2009-10-21 长江水利委员会长江科学院 Experimental water tank without tail-gate for hydraulics and mud and sand dynamics
CN201589783U (en) * 2010-01-26 2010-09-22 何建新 Sediment moving velocity testing device under seepage force action
CN201852692U (en) * 2010-09-14 2011-06-01 史宏达 Measurement device for bed-load sediment transport rate in common test water tank

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