CN205785754U - A kind of experimental provision detecting seepage flow and pressure and temp relation - Google Patents

A kind of experimental provision detecting seepage flow and pressure and temp relation Download PDF

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Publication number
CN205785754U
CN205785754U CN201620505574.9U CN201620505574U CN205785754U CN 205785754 U CN205785754 U CN 205785754U CN 201620505574 U CN201620505574 U CN 201620505574U CN 205785754 U CN205785754 U CN 205785754U
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China
Prior art keywords
soil
containers
pressure
hot
heating system
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Expired - Fee Related
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CN201620505574.9U
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Chinese (zh)
Inventor
周宜红
余晓云
裴光强
赵春菊
周剑夫
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China Three Gorges University CTGU
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China Three Gorges University CTGU
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Abstract

A kind of experimental provision detecting seepage flow and pressure and temp relation, including water storage device, water storage device is connected by water pump with hot-water heating system, it is provided with in hot-water heating system bottom and adds heat pipe, the first heat conduction division board with the first sealing ring it is provided with between hot-water heating system and containers of soil, it is provided with between containers of soil and discharge casing with the second heat conduction division board with the wire gauze filtering geotextiles, in containers of soil, multiple temperature sensor is distributed.The experiment of the seepage flow relation when water pressure and medium temp change can be carried out by this device.Experiment is divided into three phases and carries out, and carries out the temperature conduction experiment of the heat transfer test of unsaturated soil, the Seepage Experiment of saturated soil and saturated soil respectively.

Description

A kind of experimental provision detecting seepage flow and pressure and temp relation
Technical field
It is relevant to variations in temperature mutual relation etc. that this utility model relates to the permeation fluid mechanics in a kind of hydrodynamics, thermodynamics Field, specifically relates to a kind of and detection seepage flow and the experimental provision of pressure and temp relation.
Background technology
Relation between the change of the soil moisture, hydraulic pressure and seepage flow, is existed by France's hydraulician H.-P.-G. darcy Within 1852~1855, drawn by great many of experiments.Its expression formula is:
Q = K F h l
This law only describes the relation between percolation flow velocity and hydraulic slope.Infiltration coefficient is the intrinsic genus of earth materials Property, its mensuration is many to be completed by experiment, and coefficient of permeability K is an index of concentrated expression soil body penetration ability, its Correctly determining of numerical value has very important meaning to infiltration calculation.The factor affecting infiltration coefficient size is a lot, main The viscosity etc. of shape, size, nonuniformity coefficient and the water of soil body granule to be depended on, calculation permeability coefficient to be set up The exact theoretical formula of k is relatively difficult, generally can pass through test method, including laboratory method and on-site measurement method Or empirical estimation method determines k value, but these methods all have certain limitation, and examine without special equipment Survey.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of special equipment, by this equipment, The change impact on infiltration coefficient of pressure, temperature can be detected.
The purpose of this utility model is achieved in that
A kind of experimental provision detecting seepage flow and pressure and temp relation, experimental provision includes water storage device, water storage device with Hot-water heating system connects, and is provided with in hot-water heating system bottom and adds heat pipe, arranges between hot-water heating system and containers of soil There is the first heat conduction division board with sealing ring, be provided with sealing ring second between containers of soil and discharge casing and lead Plate is thermally isolated, in containers of soil, multiple temperature sensor is distributed.
Described water storage device includes tank, and tank passes through pipeline connection by pressure pump and hot-water heating system.
The first described heat conduction division board uses heat conduction nylon to make.
The heat conductivity of described heat conduction nylon is 0.5-1.0 (W/m-k).
Pressure pump is provided with piezometer on the connecting pipeline of hot-water heating system.
It is separately installed with thermometer in heater and containers of soil.
Temperature sensor layered arrangement in containers of soil.
In the middle part of the tank of water storage device, left side edge, bottom margin;Containers of soil top;At draining water tank It is mounted on temperature sensor;Containers of soil top is also provided with temperature sensor for monitoring top ambient temperature;Soil Earth lower vessel portion is also provided with temperature sensor for monitoring bottom ambient temperature.
The height of hot-water heating system, containers of soil and draining water tank is identical.
Utilize said apparatus detection seepage flow and the method for pressure and temp relation, comprise the following steps:
Step one: fill water in hot-water heating system, due to hot-water heating system and and containers of soil between be provided with First heat conduction division board of sealing ring, the temperature of hot-water heating system just can quickly and be delivered evenly to the soil of containers of soil In earth, but the water in tank will not penetrate in containers of soil;During experiment, coolant-temperature gage in tank is uniformly raised N Degree Celsius, monitor the temperature data in containers of soil and record 1 group of temperature data Tn;Later in units of N degree Celsius Repeat to adjust the water temperature in tank and carry out test of many times, and record the temperature of monitoring in temperature increase N and containers of soil Series Tn
Step 2: remove the first heat conduction isolation between hot-water heating system and containers of soil, and containers of soil and discharge casing Sealing ring on plate and the second heat conduction division board, and keep the water level that hot-water heating system is interior and draining water tank internal phase is same, Because being now saturated soil, do not have seepage flow and temperature conduction occurs, change in hot-water heating system by the requirement of the first step Temperature, utilize temperature sensor test saturated soil in temperature conduction situation;
Step 3: in controlling hot-water heating system, temperature keeps constant with pressure condition, discharges the water in discharge casing, so Because head difference, seepage flow can be caused, because seepage flow causes variations in temperature that conduction of heat causes and seepage discharge to be recorded, Constantly adjust the temperature of water in hot-water heating system by the requirement of step one and repeat experiment;Adjust in hot-water heating system Water level, or adjust hydraulic pressure by pressure pump, adjust certain head every time, repeat the experiment of step 2, and remember Record data;Analyze the data that above three steps obtain, i.e. can get the heat transfer impact on seepage discharge, and they it Between quantitative relation.
The detection seepage flow that this utility model provides is that this type of detection provides one with the experimental provision of pressure and temp relation Complete detection equipment, device structure is simple, easy to use;Utilize this equipment can carry out seepage flow at pressure and soil The experiment of relation when medium temp changes, is tested by above-mentioned listed step, can complete two targets: one Being can be with collecting temperature change conduction, quantitative relation of convection current in soil, two be by setting pressure P, mensuration temperature Temperature sequence T in degree T, containers of soilnWith seepage discharge Q, by the number before they person of digital simulation methods analyst Value relation, and be fitted, form the coupled relation between temperature, pressure, seepage flow.
Accompanying drawing explanation
With embodiment, this utility model is described further below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of this experimental provision.
Fig. 2 be Fig. 1 be the parts composition surface schematic diagram in I-I, II-II district.
Fig. 3 is that this utility model has the wire gauze structural representation filtering geotextiles.
Fig. 4-6 is that in this device, schematic diagram is arranged in temperature sensor.
In figure, 1, tank, 2, pressure pump, 3, hot-water heating system, 4, containers of soil, 5, discharge casing, 6, Add heat pipe, the 7, first heat conduction division board, the 8, second heat conduction division board, 9, piezometer, 10, thermometer, 11, Temperature sensor, 12, sealing ring, 13, with filtering the wire gauze of geotextiles, 14, screw, 15 screws, 16, Support, 17, tank dewatering outlet, 18, hot-water heating system dewatering outlet, 19, air vent, 20, geotextiles, B represents Stably thermal source.
Detailed description of the invention
Structure of the present utility model is as shown in Figure 1: a kind of experimental provision detecting seepage flow and pressure and temp relation, water storage Device, water storage device connects with hot-water heating system 3, is provided with in hot-water heating system 3 bottom and adds heat pipe 6, and water heats The first heat conduction division board 7 with sealing ring 12, the first sealing ring 12 it is provided with between device 3 and containers of soil 4 Be connected by multiple screws 14 with the first heat conduction division board 7, be provided with between containers of soil 4 and discharge casing 5 with With filtering the second heat conduction division board 8 of wire gauze 13 of geotextiles, with the of the wire gauze 13 filtering geotextiles Connected by multiple screws 15 between two heat conduction division boards 8, in containers of soil 4, multiple temperature sensor is distributed 11, for ensureing to test closer to truth, construction of stable geothermal source, containers of soil 4 is good with the earth Heat Conduction Material Good contact, to obtain the temperature environment as the earth, i.e. B portion in Fig. 1.
Water storage device of the present utility model includes that tank 1, tank 1 are passed through with hot-water heating system 3 by pressure pump 2 Pipeline connection.
The entirety of this device is placed on support 16, the bottom of tank 1 is provided with tank dewatering outlet 17, adds at water Arranging hot-water heating system dewatering outlet 18 bottom thermal 3, hot-water heating system top is provided with air vent 19, in order to Aqueous vapor is discharged.
Sensor is distributed: be a sensor distribution examples of this device below: as Figure 4-Figure 6, (the volume in figure Number representative sensor), in actually detected, the distribution of sensor can be adjusted in detail as required.At whole device In arrange 38 temperature sensors altogether, monitor the temperature of zones of different.Wherein it is arranged in containers of soil 4 31, Arranging 6 groups altogether to lower and upper, the 1st group of distance container bottom 5 centimetres, the 2nd, 3 groups in same level, distance First group of vertical dimension is 15 centimetres, and the 4th, 5,6 groups of vertical dimensions are 10 centimetres, and often group sensor is same flat In face, arrangement pitch is 20 centimetres, and is uniformly distributed.
Be arranged in other position of this experimental provision has 7, and (not marking in Fig. 4-6) is arranged on tank respectively In, it is arranged in container left side edge, is arranged in container bottom rim, be arranged in top edge, be arranged in draining At water tank, it is arranged in upper vessel portion monitoring top ambient temperature, is arranged in lower vessel portion monitoring bottom ambient temperature.
This utility model adds man-hour, and according to being processed as shown in Figure 1, each parts use screw to connect, and bottom is with propping up Each parts are fixed by frame 16.
When testing, on the screw 14 on the first sealing ring 12 and the wire gauze 13 with filtration geotextiles Screw 15 can outward winding, and remove corresponding sealing ring.
The experimental procedure completed by this experimental provision is as follows:
The first step: fill water in hot-water heating system 3, between hot-water heating system and containers of soil 4 with the first heat conduction every Separate from plate 7, the temperature of such hot-water heating system just can quickly and be delivered evenly in the soil of containers of soil, But the water in tank will not penetrate in containers of soil.During experiment, coolant-temperature gage in tank is uniformly raised 2 degrees Celsius, 2 degrees Celsius are raised with temperature in simulation soil.The water temperature later repeating to adjust in tank in units of 2 degrees Celsius is carried out Test of many times, according to actual requirement, it is possible to raise such as 1 degree Celsius, 3 degrees Celsius, 4 degrees Celsius etc. every time.
Second step: remove the first sealing ring 12, and keep the interior water level identical with in discharge casing 5 of hot-water heating system 3, Because being now saturated soil, the most do not have seepage flow and temperature conduction occurs, change water by the requirement of the first step and add hot charging Temperature in putting, temperature conduction and convection current situation in test saturated soil.
3rd step: in hot-water heating system, situation keeps constant, discharges the water in discharge casing 5, so because of head difference, Seepage flow can be caused, because seepage flow causes variations in temperature that conduction of heat causes and seepage discharge will be recorded, by the first step Require constantly adjust the temperature of water in hot-water heating system and repeat experiment.Adjust the water level in hot-water heating system, or Adjust hydraulic pressure by pressure pump 2, every time the head of other data of adjustment 0.5 meter or requirement of experiment, repeat second Step experiment, and record data.
Tested by above-mentioned listed step, two targets can be completed: one is can to pass in soil with collecting temperature change Lead, the quantitative relation of convection current, two be by setting pressure P, measure hot-water heating system temperature T, the middle temperature of containers of soil Degree series TnWith seepage discharge Q, by digital simulation methods analyst numerical relation before them.
In this utility model, pressure pump 2 (maximum hydraulic pressure reaches 10 meters of head hydraulic pressure) this partial devices can directly be used Aqueduct is from the tank of high water level or eservoir diversion.
Artesian water produces seepage flow, water pressure and temperature in hot-water heating system 3 and can accurately control.Soil volume is big Clay that is little for 0.5*0.6*1 rice, that use infiltration coefficient to be 10-4 to 10-5 cel, temperature sensor is at soil Earth is numbered, and is embedded in soil to monitor temperature by Fig. 4 temperature sensor layout drawing order, sensor first Bottom row distance 10 centimetres, the second 20 centimetres of row distance device top, with in a line between sensor spacing be 20 Centimetre.
Heat conduction division board of the present utility model uses heat conduction nylon to make, and the heat conductivity of the heat conduction nylon of selection is 0.5-1.0(W/m-k)。
This utility model is that pressure pump 2 is provided with piezometer 9 on the connecting pipeline of hot-water heating system 3, can be real Time monitoring pipeline on water pressure;It is separately installed with thermometer 10 in hot-water heating system 3 and containers of soil 4, can Monitoring hot-water heating system 3 and the temperature of containers of soil 4 in real time.

Claims (9)

1. the experimental provision detecting seepage flow and pressure and temp relation, it is characterized in that: experimental provision includes water storage device, water storage device connects with hot-water heating system (3), it is provided with in hot-water heating system (3) bottom and adds heat pipe (6), the first heat conduction division board (7) with sealing ring (12) it is provided with between hot-water heating system (3) and containers of soil (4), it is provided with the second heat conduction division board (8) with the wire gauze (13) filtering geotextiles between containers of soil (4) and discharge casing (5), multiple temperature sensor (11) is distributed in containers of soil (4).
Detection seepage flow the most according to claim 1 and the experimental provision of pressure and temp relation, it is characterised in that: described water storage device includes tank (1), and tank (1) passes through pipeline connection by pressure pump (2) and hot-water heating system (3).
Detection seepage flow the most according to claim 1 and the experimental provision of pressure and temp relation, it is characterised in that: the first described heat conduction division board (7) heat conduction nylon is made.
Detection seepage flow the most according to claim 3 and the experimental provision of pressure and temp relation, it is characterised in that: the heat conductivity of described heat conduction nylon is 0.5-1.0 (W/m-k).
Detection seepage flow the most according to claim 1 and the experimental provision of pressure and temp relation, it is characterised in that: it is that pressure pump (2) is provided with piezometer (9) on the connecting pipeline of hot-water heating system (3).
Detection seepage flow the most according to claim 1 and the experimental provision of pressure and temp relation, it is characterised in that: in hot-water heating system (3) and containers of soil (4), it is separately installed with thermometer (10).
Detection seepage flow the most according to claim 1 and the experimental provision of pressure and temp relation, it is characterised in that: temperature sensor (11) layered arrangement in containers of soil (4).
Detection seepage flow the most according to claim 1 and 2 and the experimental provision of pressure and temp relation, it is characterised in that: in the middle part of the tank of water storage device, left side edge, bottom margin;Containers of soil top;It is mounted on temperature sensor at draining water tank;Containers of soil top is also provided with temperature sensor for monitoring top ambient temperature;Containers of soil bottom is also provided with temperature sensor for monitoring bottom ambient temperature, to determine stably thermal source.
Detection seepage flow the most according to claim 1 and the experimental provision of pressure and temp relation, it is characterised in that: the height of hot-water heating system (3), containers of soil (4) and draining water tank (5) is identical.
CN201620505574.9U 2016-05-29 2016-05-29 A kind of experimental provision detecting seepage flow and pressure and temp relation Expired - Fee Related CN205785754U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105865746A (en) * 2016-05-29 2016-08-17 三峡大学 Experiment device and method for detecting relationship between seepage and pressure/temperature
CN108279255A (en) * 2018-02-09 2018-07-13 朱传磊 A kind of large hydraulic engineering seepage flow real-time detection apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105865746A (en) * 2016-05-29 2016-08-17 三峡大学 Experiment device and method for detecting relationship between seepage and pressure/temperature
CN105865746B (en) * 2016-05-29 2018-11-02 三峡大学 A kind of experimental provision and method of detection seepage flow and pressure and temp relationship
CN108279255A (en) * 2018-02-09 2018-07-13 朱传磊 A kind of large hydraulic engineering seepage flow real-time detection apparatus

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20161207

Termination date: 20170529