CN214668447U - Rock-soil water supply degree and permeability coefficient measuring device - Google Patents
Rock-soil water supply degree and permeability coefficient measuring device Download PDFInfo
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- CN214668447U CN214668447U CN202120695146.8U CN202120695146U CN214668447U CN 214668447 U CN214668447 U CN 214668447U CN 202120695146 U CN202120695146 U CN 202120695146U CN 214668447 U CN214668447 U CN 214668447U
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Abstract
The utility model discloses a rock-soil water feeding degree and permeability coefficient measuring device, which comprises a first measuring cylinder, a liquid inlet cylinder, an experimental cylinder, a liquid outlet cylinder and a second measuring cylinder; a liquid inlet pipeline is arranged between the first measuring cylinder and the liquid inlet cylinder, the liquid inlet pipeline comprises a low-position pipe section and a high-position pipe section, a constant delivery pump is mounted on the low-position pipe section, and a first pressure gauge and a first flow sensor are arranged on the high-position pipe section; a first pressure regulating overflow valve is arranged on the overflow pipeline; an upper filter plate is arranged between the liquid inlet cylinder and the experimental cylinder, and a lower filter plate is arranged between the experimental cylinder and the liquid outlet cylinder; and a second flow sensor, a second pressure gauge and a second pressure regulating overflow valve are arranged on the liquid outlet pipeline. The utility model discloses a test device simulation scene gravity water pressure operating mode, but the feedwater degree and the osmotic coefficient of ground under the accurate measurement height, the various water pressure of well, low.
Description
Technical Field
The utility model relates to a geotechnical test measures technical field, in particular to ground feedwater degree and osmotic coefficient measuring device.
Background
Water supply degree and permeability coefficient are main parameters measured in an underground hydrological laboratory, a water supply degree meter is adopted for measuring the water supply degree in the laboratory at present, and a Darcy permeameter is adopted for measuring the permeability coefficient.
The definition of degree of water feed was first proposed by the soviet union, and from the point of view of groundwater supply, it is believed that degree of water feed is the ratio of the volume of water that a saturated medium can give under gravity drainage to the volume of porous medium. The weak combined water in the fine particle clay under the pressure can be converted into free water (namely gravity water), but the saturated soil in the water supply degree instrument is pressureless, and only the free water under the pressureless state can be measured, and the measured water supply degree has certain deviation with the water supply degree of the saturated soil under the pressure state.
Water supply degree is introduced into a paper of Wang Guo Yi and Jiang quan which are all under the saturated soil effective stress principle, so that the effective stress principle of the Taisha base is optimized, and the unified calculation of water and soil pressure calculation and cost is realized. For this reason, accurate measurement of the water content plays an important role in the calculation of the water and soil pressure. Similarly, the Darcy permeameter is also used for measuring the permeability coefficient of the rock and soil under low water pressure, and the permeability coefficient of the rock and soil under high water pressure cannot be measured. At present, a device is urgently needed to be designed, and the device can help measure the rock and soil water supply degree and the permeability coefficient under various water pressures.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a ground feedwater degree and osmotic coefficient measuring device, realizes the water pressure regulation of intaking and play water, can accurately measure the feedwater degree and the osmotic coefficient of ground under high, middle, low various water pressure.
The purpose of the utility model is realized through the following technical scheme:
a rock-soil water supply degree and permeability coefficient measuring device comprises a first measuring cylinder, a liquid inlet cylinder, an experimental cylinder, a liquid outlet cylinder and a second measuring cylinder;
a liquid inlet pipeline is arranged between the first measuring cylinder and the liquid inlet cylinder, the liquid inlet pipeline comprises a low-position pipe section and a high-position pipe section, a constant delivery pump is mounted on the low-position pipe section, and a first pressure gauge and a first flow sensor are arranged on the high-position pipe section; the liquid inlet pipeline is also connected with an overflow pipeline, and a first pressure regulating overflow valve is installed on the overflow pipeline;
the experimental cylinder is arranged between the liquid inlet cylinder and the liquid outlet cylinder, an upper filter plate is arranged between the liquid inlet cylinder and the experimental cylinder, and a lower filter plate is arranged between the experimental cylinder and the liquid outlet cylinder; a liquid outlet pipeline is arranged between the liquid outlet cylinder and the second measuring cylinder, and a second flow sensor, a second pressure gauge and a second pressure regulating overflow valve are installed on the liquid outlet pipeline.
Preferably, the low level pipe section is further provided with a first stop valve.
Preferably, a third stop valve is mounted on the high-level pipe section of the liquid inlet pipeline.
Preferably, the low-level pipe section of the liquid inlet pipeline is connected with a first liquid discharging pipeline, and a second stop valve is installed on the first liquid discharging pipeline.
Preferably, the liquid outlet pipeline is further provided with a fifth stop valve.
Preferably, the mounting position of the liquid discharge cylinder is higher than the mounting position of the second measuring cylinder. The installation height of the liquid outlet cylinder is based on the fact that liquid in the liquid outlet cylinder can smoothly (under the action of gravity) flow into the second measuring cylinder.
Preferably, one end of the liquid outlet pipeline is connected with the bottom of the liquid outlet cylinder, and the other end of the liquid outlet pipe is arranged above the second measuring cylinder.
Preferably, a first bracket is arranged below the first measuring cylinder; a second bracket is arranged below the liquid outlet cylinder; and a third bracket is arranged below the second measuring cylinder.
Preferably, the bottom of the liquid inlet cylinder is connected with a second liquid discharging pipeline, and a fourth stop valve is installed on the second liquid discharging pipeline.
Preferably, the bottom of the second measuring cylinder is connected with a third liquid discharging pipeline, and a sixth stop valve is installed on the third liquid discharging pipeline.
The utility model has the advantages that: the utility model provides a ground feedwater degree and osmotic coefficient measuring device. The test device is used for simulating the on-site gravity water pressure, and the water supply degree and the permeability coefficient of rock and soil under various water pressures such as high, medium and low can be measured by the device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a feedwater degree and permeability coefficient measuring apparatus;
in the figure, 1-a first support, 2-a first measuring cylinder, 3-a constant displacement pump, 4-a first stop valve, 5-a second stop valve, 6-a first pressure regulating overflow valve, 7-a first pressure gauge, 8-a first flow sensor, 9-a third stop valve, 10-a liquid inlet cylinder, 11-an upper filter plate, 12-a fourth stop valve, 13-an experimental cylinder, 14-a lower filter plate, 15-a liquid outlet cylinder, 16-a fifth stop valve, 17-a second flow sensor, 18-a second pressure gauge, 19-a second pressure regulating overflow valve, 20-a second measuring cylinder, 21-a sixth stop valve, 22-a second support and 23-a third support.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the presence of a first feature above or below a second feature may encompass direct contact of the first and second features, and may also encompass contact of the first and second features not being in direct contact, but via additional features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. Including a first feature being directly below and obliquely below a second feature, or simply indicating that the first feature is at a lesser elevation than the second feature, if present below, under or below the second feature.
Example one
As shown in figure 1, the device for measuring the rock-soil water supply degree and the permeability coefficient comprises a first measuring cylinder 2, a liquid inlet cylinder 10, an experimental cylinder 13, a liquid outlet cylinder 15 and a second measuring cylinder 20;
a liquid inlet pipeline is arranged between the first measuring cylinder 2 and the liquid inlet cylinder 10, the liquid inlet pipeline comprises a low-position pipe section and a high-position pipe section, a constant delivery pump 3 is installed on the low-position pipe section, and a first pressure gauge 7 and a first flow sensor 8 are arranged on the high-position pipe section; the liquid inlet pipeline is also connected with an overflow pipeline, and a first pressure regulating overflow valve 6 is installed on the overflow pipeline;
the experimental cylinder 13 is arranged between the liquid inlet cylinder 10 and the liquid outlet cylinder 15, the upper filter plate 11 is arranged between the liquid inlet cylinder 10 and the experimental cylinder 13, and the lower filter plate 14 is arranged between the experimental cylinder 13 and the liquid outlet cylinder 15; a liquid outlet pipeline is arranged between the liquid outlet cylinder 15 and the second measuring cylinder 20, and a second flow sensor 17, a second pressure gauge 18 and a second pressure regulating overflow valve 19 are installed on the liquid outlet pipeline.
The measuring device is suitable for measuring the water supply degree and the permeability coefficient under the working conditions of all types of soil and different water pressures, and is worthy of being popularized and applied in the global range.
Example two
On the basis of the first embodiment, the present embodiment is modified in some details.
The low-level pipe section is also provided with a first stop valve 4. And a third stop valve 9 is arranged on the high-level pipe section of the liquid inlet pipeline.
The low-order pipeline section of liquid inlet pipe way connects first tapping pipeline, and installation second stop valve 5 on the first tapping pipeline. The liquid outlet line is also provided with a fifth stop valve 16. The mounting position of the liquid discharge cylinder 15 is higher than the mounting position of the second measuring cylinder 20. The mounting height of the liquid outlet cylinder 15 is determined to ensure that the liquid in the liquid outlet cylinder 15 can smoothly flow into the second measuring cylinder 20. One end of the liquid outlet pipe is connected with the bottom of the liquid outlet cylinder 15, and the other end of the liquid outlet pipe is arranged above the second measuring cylinder 20.
The bottom of the liquid inlet cylinder 10 is connected with a second liquid discharging pipeline, and a fourth stop valve 12 is installed on the second liquid discharging pipeline.
The bottom of the second measuring cylinder 20 is connected with a third liquid discharging pipeline, and a sixth stop valve 21 is installed on the third liquid discharging pipeline.
Through the change, many control problems of the whole device are solved, for example, the on-off of the related pipeline can be controlled through the first stop valve 4 or other stop valves. Through the drainage pipeline, the liquid can be discharged more efficiently, so that the whole device is more beneficial to maintenance.
EXAMPLE III
In order to secure the height of the mounting part, the following settings are made: a first bracket 1 is arranged below the first measuring cylinder 2; a second bracket 22 is arranged below the liquid outlet cylinder 15; a third support 23 is provided below the second measuring cylinder 20.
Example four
An operation method of a device for measuring the rock-soil water supply degree and permeability coefficient comprises the following steps:
and (3) mounting of a soil sample: a lower filter plate 14 is arranged above the liquid outlet cylinder 15, a water filtering cloth is arranged above the lower filter plate 14, then a soil sample (an original-state soil sample taken on site) is loaded into the experiment cylinder 13, the experiment cylinder 13 is required to be completely filled with the soil sample, no gap exists between the soil sample and the wall of the experiment cylinder 13, an upper filter plate 11 is arranged (the soil sample is compacted according to the original-state soil compaction degree), the water filtering cloth is arranged on the upper filter plate 11, then a liquid inlet cylinder 10 is arranged, and related pipelines are arranged;
the measuring process and the calculating method of the water supply degree comprise the following steps: the water in the first measuring cylinder 2 is filled, the constant delivery pump 3 is started, the water in the first measuring cylinder 2 enters the liquid inlet cylinder 10 through the first stop valve 4, the constant delivery pump 3, the first pressure gauge 7, the first flow sensor 8 and the third stop valve 9, and is immersed in the soil sample through the water filtering cloth and the upper filter plate 11 and permeates downwards;
water permeating the soil sample enters the liquid outlet cylinder 15 through the water filtering cloth and the lower filter plate 14, and when the water pressure in the liquid outlet cylinder 15 exceeds the overflow pressure of the second pressure regulating overflow valve 19, the water overflows into the second measuring cylinder 20 through the fifth stop valve 16, the second flow sensor 17, the second pressure gauge 18 and the second pressure regulating overflow valve 19;
the overflow pressure of the first pressure-regulating overflow valve 6 and the overflow pressure of the second pressure-regulating overflow valve 19 are both regulated to be the gravity water pressure required by the soil sample (the pressure values are read by the first pressure gauge 7 and the second pressure gauge 18), the soil sample is fully saturated, and the third stop valve 9 and the fifth stop valve 16 are closed after the soil sample is fully saturated;
and cleaning the water in the first measuring cylinder 2 and the second measuring cylinder 20. The hydraulic oil is filled in the first measuring cylinder 2, then the constant delivery pump 3 is started, the closed third stop valve 9 and the closed fifth stop valve 16 are opened, the overflow pressure of the first pressure regulating overflow valve 6 is slightly increased (the increase range is 0.01-0.02Mpa), the hydraulic oil enters the soil sample to squeeze the gravity water, the water in the liquid inlet cylinder 10, the soil sample and the liquid outlet cylinder 15 overflows into the second measuring cylinder 20, the constant delivery pump 3 is stopped after the gravity water in the liquid inlet cylinder 10, the soil sample and the liquid outlet cylinder 15 is replaced by the hydraulic oil, and the volume of the water in the second measuring cylinder 20 can be directly read out because the water and the hydraulic oil are not mixed.
EXAMPLE five
A rock-soil water supply calculation method is characterized in that the volume of a liquid inlet cylinder 10 is set to be VIntoThe volume of the liquid outlet cylinder 15 is VGo outVolume of the experimental cylinder 13 is VFruit of Chinese wolfberryThe volume of gravity water in the second measuring cylinder 20 is VWater (W)And the water supply degree is m, and the rock-soil water supply degree under the water pressure working condition can be calculated according to the water supply degree definition:
m＝(Vwater (W)-VInto-VGo out)/VFruit of Chinese wolfberry。
EXAMPLE six
The embodiment provides a rock-soil permeability coefficient calculation method, a water saturation soil sample is adopted according to a water supply degree measurement process method, and a third stop valve 9 and a fifth stop valve 16 are closed after the soil sample is fully saturated;
the water in the second measuring cylinder 20 is cleaned. Then the constant delivery pump 3 is started, the closed third stop valve 9 and the closed sixth stop valve 21 are opened, the overflow pressure of the first pressure regulating overflow valve 6 is slowly regulated to the upper water head pressure, the overflow pressure of the second pressure regulating overflow valve 19 is slowly regulated to the lower water head pressure, an upper water head difference and a lower water head difference are formed (the water head difference is not lower than 0.1Mpa), the water head pressure is read through the first pressure gauge 7 and the second pressure gauge 18, and when the water flow of the first flow sensor 8 and the water flow of the second flow sensor 17 in unit time are basically equal (the difference value is not more than 0.001 m)3And h), recording the pressure of an upper water head and a lower water head and two flow values after the flow is stable, recording the water flow values for multiple times by adopting different water head differences, and calculating the average permeability coefficient of the soil sample. If the seepage flow under a specific working condition needs to be calculated, the permeability coefficient can be directly measured under the working condition, and the water seepage flow can be calculated more accurately.
The pressure of a 6 water head of the first pressure regulating overflow valve is set to be h2The 19 water head pressure of the second pressure regulating overflow valve is h1The length of the experimental cylinder 13 is L, the water flow (the average value of two flow sensor values) in unit time is Q, the permeability coefficient in Darcy's law is K, and the circular area of the experimental cylinder 13 is A;
according to the Darcy's law formula, the method comprises the following steps:
Q＝KA(h2-h1)/L，
however, the area in this formula is not the gravity water channel area, but the cross-sectional area of the soil sample and the gravity water, and it should be changed. The area of the gravity water channel in the 13-circle area of the experimental cylinder is m2/3A, setting the permeability coefficient of K in the changed Darcy law1；
The darcy law equation may become:
Q＝K1m2/3A(h2-h1)/L，
the permeability coefficient can now be calculated:
K1＝QL/(m2/3A(h2-h1))。
coefficient of permeability K1After the calculation is accurate, the water seepage flow can be accurately calculated according to the changed Darcy law formula.
EXAMPLE seven
The utility model provides a measurement device of ground feedwater degree and osmotic coefficient, mainly includes parts such as first graduated flask 2, constant delivery pump 3, first pressure regulating overflow valve 6, first manometer 7, first flow sensor 8, feed cylinder 10, go up filter plate 11, a laboratory cylinder 13, lower filter plate 14, go out liquid cylinder 15, second flow sensor 17, second manometer 18, second pressure regulating overflow valve 19, second graduated flask 20, stop valve and relevant pipeline. In order to control the on-off between the component and the pipeline, a first stop valve 4, a second stop valve 5, a third stop valve 9, a fourth stop valve 12, a fifth stop valve 16 and a sixth stop valve 21 are arranged. In order to secure the height of the mounting member, a first bracket 1 (mounted below the first measuring cylinder 2), a second bracket 22 (mounted below the liquid discharge cylinder 15), and a third bracket 23 (mounted below the second measuring cylinder 20) are provided. The liquid inlet cylinder 10, the experiment cylinder 13 and the liquid outlet cylinder 15 are all round transparent cylinders and can bear required pressure. And water filtering cloth is arranged above the upper filter plate 11 and the lower filter plate 14, and soil-like particles of the water filtering cloth can not pass through but only can pass through water or hydraulic oil.
And (3) mounting of a soil sample: the lower filter plate 14 is arranged above the liquid outlet cylinder 15, the water filtering cloth is arranged above the lower filter plate 14, then a soil sample (an original-state soil sample taken on site) is put into the experiment cylinder 13, the experiment cylinder 13 is required to be completely filled, the soil sample is not in clearance with the wall of the experiment cylinder 13, the upper filter plate 11 is arranged (the soil sample is compressed according to the original-state soil compactness), the water filtering cloth is arranged on the upper filter plate 11, and finally the liquid inlet cylinder 10 is arranged, and related pipelines are arranged.
The measuring process and the calculating method of the water supply degree comprise the following steps: the first measuring cylinder 2 is filled with water, the constant delivery pump 3 is started, the water in the first measuring cylinder 2 enters the liquid inlet cylinder 10 through the first stop valve 4, the constant delivery pump 3, the first pressure gauge 7, the first flow sensor 8 and the third stop valve 9, is immersed in a soil sample through the water filtering cloth and the upper filter plate 11 and permeates downwards,
the water permeating the soil sample enters the liquid outlet cylinder 15 through the water filtering cloth and the lower filter plate 14, and when the water pressure in the liquid outlet cylinder 15 exceeds the overflow pressure of the second pressure regulating overflow valve 19, the water overflows into the second measuring cylinder 20 through the fifth stop valve 16, the second flow sensor 17, the second pressure gauge 18 and the second pressure regulating overflow valve 19.
The overflow pressure of the first pressure regulating overflow valve 6 and the overflow pressure of the second pressure regulating overflow valve 19 are regulated to be the gravity water pressure required by the soil sample (the pressure value is read by the first pressure gauge 7 and the second pressure gauge 18), the soil sample is fully saturated, and the third stop valve 9 and the fifth stop valve 16 are closed after the soil sample is fully saturated.
And cleaning the water in the first measuring cylinder 2 and the second measuring cylinder 20. The hydraulic oil is filled in the first measuring cylinder 2, then the constant delivery pump 3 is started, the closed third stop valve 9 and the closed fifth stop valve 16 are opened, the overflow pressure of the first pressure regulating overflow valve 6 is slightly increased, the hydraulic oil enters the soil sample to squeeze the gravity water, the water in the liquid inlet cylinder 10, the soil sample and the liquid outlet cylinder 15 overflows into the second measuring cylinder 20, the constant delivery pump 3 is stopped after the gravity water in the liquid inlet cylinder 10, the soil sample and the liquid outlet cylinder 15 is completely replaced by the hydraulic oil, and the volume of the water in the second measuring cylinder 20 can be directly read out because the water and the hydraulic oil are not mixed.
Set the volume of the liquid inlet cylinder 10Is a VIntoThe volume of the liquid outlet cylinder 15 is VGo outVolume of the experimental cylinder 13 is VFruit of Chinese wolfberryThe volume of gravity water in the second measuring cylinder 20 is VWater (W)And the water supply degree is m, and the rock-soil water supply degree under the water pressure working condition can be calculated according to the water supply degree definition:
m＝(Vwater (W)-VInto-VGo out)/VFruit of Chinese wolfberry
The measuring process and the calculating method of the permeability coefficient are as follows: and (3) adopting a water saturation soil sample according to a water supply degree measuring process method, and closing the third stop valve 9 and the fifth stop valve 16 after the soil sample is fully saturated. The water in the second measuring cylinder 20 is cleaned. And then starting the constant delivery pump 3, opening the closed third stop valve 9 and the closed sixth stop valve 21, slowly adjusting the overflow pressure of the first pressure-regulating overflow valve 6 to the upper water head pressure, slowly adjusting the overflow pressure of the second pressure-regulating overflow valve 19 to the lower water head pressure to form an upper and lower water head difference (the water head difference is not less than 0.1Mpa), reading the water head pressure through the first pressure gauge 7 and the second pressure gauge 18, recording the upper and lower water head pressures and the two flow values after the water flow of the first flow sensor 8 and the second flow sensor 17 in unit time is basically equal, recording the water flow values by adopting different water head differences for multiple times, and calculating the average permeability coefficient of the soil sample.
The pressure of a 6 water head of the first pressure regulating overflow valve is set to be h2The 19 water head pressure of the second pressure regulating overflow valve is h1The length of the experimental cylinder 13 is L, the water flow rate (the average value of two flow sensor values) in unit time is Q, the permeability coefficient in Darcy's law is K, and the circular area of the experimental cylinder 13 is A.
According to the Darcy's law formula, the method comprises the following steps:
Q＝KA(h2-h1)/L，
however, the area in this formula is not the gravity water channel area, but the cross-sectional area of the soil sample and the gravity water, and it should be changed. According to the ' water-soil pressure calculation under the saturated soil effective stress principle ' in the Wang Guasi ' thesis, it can be known that the gravity water channel area in the circular area of the experimental cylinder 13 is m2/3A, setting the permeability coefficient of K in the changed Darcy law1。
The changed Darcy's law formula should be:
Q＝K1m2/3A(h2-h1)/L，
the permeability coefficient can now be calculated:
K1＝QL/(m2/3A(h2-h1))。
because the water supply degrees of the fine-particle clay and the dense soil are extremely low, the gravity water in the soil sample can be replaced in a long time when the water supply degree is measured.
The water supply degree and the permeability coefficient are different under the conditions of different types of soil and different gravity water pressure (or different water head pressure differences). In the indoor test, an undisturbed soil sample is required to be adopted, the on-site water pressure working condition is simulated to the maximum extent, the water supply degree and the permeability coefficient are measured and calculated for many times, and powerful support is provided for calculation of water and soil pressure and water seepage flow in saturated soil. In conclusion, according to the indoor tests on the undisturbed soil sample, the water supply degree and the permeability coefficient of the undisturbed soil under different water pressures can be accurately calculated, and the changed Darcy's law formula can help accurately calculate the water seepage flow in the saturated soil.
The above description is only used for illustrating some principles and functions of the rock-soil water feeding degree and permeability coefficient measuring device and method of the present invention, and it is not intended to limit the present invention to the specific structure and application range shown and described, so all the corresponding modifications and equivalents that may be utilized all belong to the patent scope applied by the present invention.
Claims (10)
1. The utility model provides a ground feedwater degree and osmotic coefficient measuring device which characterized in that: comprises a first measuring cylinder, a liquid inlet cylinder, an experimental cylinder, a liquid outlet cylinder and a second measuring cylinder;
a liquid inlet pipeline is arranged between the first measuring cylinder and the liquid inlet cylinder, the liquid inlet pipeline comprises a low-position pipe section and a high-position pipe section, a constant delivery pump is mounted on the low-position pipe section, and a first pressure gauge and a first flow sensor are arranged on the high-position pipe section; the liquid inlet pipeline is also connected with an overflow pipeline, and a first pressure regulating overflow valve is installed on the overflow pipeline;
the experimental cylinder is arranged between the liquid inlet cylinder and the liquid outlet cylinder, an upper filter plate is arranged between the liquid inlet cylinder and the experimental cylinder, and a lower filter plate is arranged between the experimental cylinder and the liquid outlet cylinder; a liquid outlet pipeline is arranged between the liquid outlet cylinder and the second measuring cylinder, and a second flow sensor, a second pressure gauge and a second pressure regulating overflow valve are installed on the liquid outlet pipeline.
2. The device for measuring the rock-soil water degree and permeability coefficient according to claim 1, characterized in that: the low-level pipe section is also provided with a first stop valve.
3. The geotechnical water degree and permeability coefficient measuring device according to claim 1 or 2, characterized in that: and a third stop valve is arranged on the high-level pipe section of the liquid inlet pipeline.
4. The geotechnical water degree and permeability coefficient measuring device according to claim 3, characterized in that: the low-level pipe section of the liquid inlet pipeline is connected with a first liquid discharging pipeline, and a second stop valve is installed on the first liquid discharging pipeline.
5. The device for measuring the rock-soil water degree and permeability coefficient according to claim 1, characterized in that: and the liquid outlet pipeline is also provided with a fifth stop valve.
6. The geotechnical water degree and permeability coefficient measuring device according to claim 1 or 5, characterized in that: the mounting position of the liquid outlet cylinder is higher than that of the second measuring cylinder.
7. The geotechnical water degree and permeability coefficient measuring device according to claim 6, characterized in that: one end of the liquid outlet pipeline is connected with the bottom of the liquid outlet cylinder, and the other end of the liquid outlet pipe is arranged above the second measuring cylinder.
8. The device for measuring the rock-soil water degree and permeability coefficient according to claim 1, characterized in that: a first bracket is arranged below the first measuring cylinder; a second bracket is arranged below the liquid outlet cylinder; and a third bracket is arranged below the second measuring cylinder.
9. The device for measuring the rock-soil water degree and permeability coefficient according to claim 1, characterized in that: the bottom of the liquid inlet cylinder is connected with a second liquid discharging pipeline, and a fourth stop valve is installed on the second liquid discharging pipeline.
10. The device for measuring the rock-soil water degree and permeability coefficient according to claim 1, characterized in that: the bottom of the second measuring cylinder is connected with a third liquid discharging pipeline, and a sixth stop valve is installed on the third liquid discharging pipeline.
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