CN109115669B - Water circulation testing device and method for automatically measuring rock permeability change for long term - Google Patents
Water circulation testing device and method for automatically measuring rock permeability change for long term Download PDFInfo
- Publication number
- CN109115669B CN109115669B CN201811143733.5A CN201811143733A CN109115669B CN 109115669 B CN109115669 B CN 109115669B CN 201811143733 A CN201811143733 A CN 201811143733A CN 109115669 B CN109115669 B CN 109115669B
- Authority
- CN
- China
- Prior art keywords
- water
- valve
- water tank
- rock
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 172
- 239000011435 rock Substances 0.000 title claims abstract description 76
- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 230000035699 permeability Effects 0.000 title claims abstract description 26
- 230000008859 change Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000007774 longterm Effects 0.000 title abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 239000007924 injection Substances 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 7
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 4
- 238000004590 computer program Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 230000003204 osmotic effect Effects 0.000 claims description 2
- 230000003628 erosive effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
Landscapes
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a water circulation testing device and a method for automatically measuring rock permeability change for a long time, wherein the testing device comprises: the rock sample clamping and loading system comprises a rock core clamp holder and a confining pressure control system, wherein the rock sample to be tested is placed in the rock core clamp holder; a circulating injection and drainage system which controls the liquid flowing through the rock sample and forms a circulating loop; the timing switch system controls the liquid injection and liquid discharge system to be started and closed in a specified time without the need of the operator on duty control; the data acquisition and recording system comprises three pressure transmitters, two quality sensors, a paperless recorder and a computer, wherein the three pressure transmitters, the two quality sensors, the paperless recorder and the computer are arranged in a testing device. The invention solves the problems that the long-term water flow erosion effect cannot be studied in the prior art, the measuring range of the instrument is small, the instrument cannot be suitable for the conditions of abrupt change of permeability and the test problem of large change of permeability, and simultaneously solves the technical problem that the test instrument in the prior art needs whole-course monitoring and manual operation of testers.
Description
Technical Field
The invention relates to a test of rock permeability, in particular to a water circulation test device and a test method for automatically measuring rock permeability change for a long time.
Background
Permeability refers to the ability of rock to allow fluid to pass under a pressure differential, and long term water flow washout can cause changes in rock mass permeability. In order to reduce the disaster loss of erosion, the research on the long-term change of rock permeability is very important. Most existing testing instruments for measuring rock permeability need operators to watch the whole process. Each test requires a significant amount of time, effort and expense. Most of existing instruments for measuring rock seepage have small measuring range, and the problem of large permeability change caused by long-time water flow erosion cannot be studied. Particularly for the case of abrupt change of permeability in the water burst test.
Disclosure of Invention
The invention aims to: aiming at the prior art, the water circulation testing device and the water circulation testing method for automatically measuring the rock permeability change for a long time are provided, the problems that the long-term water flow erosion effect cannot be studied in the prior art, the measuring range of an instrument is small, the instrument cannot be suitable for testing the permeability change greatly, and meanwhile, the technical problems that a testing instrument in the prior art needs whole-course monitoring and manual operation of a tester are solved.
The technical scheme is as follows: a water circulation testing device for automatically measuring rock permeability change for a long period of time, comprising:
the rock sample clamping and loading system comprises a rock core clamp and a confining pressure control system, and a rock sample to be tested is placed in the rock core clamp;
the circulating liquid injection and drainage system is used for injecting liquid into the rock core clamp holder and draining the liquid from the rock core clamp holder system to form a closed circulation system;
the timing switch system is used for controlling the time for starting and ending the operation of the circulating liquid injection and drainage system;
and the data acquisition and recording system is used for receiving the test data.
Further, the circulating liquid injection and drainage system comprises a third water tank, a filter, a water pump, a pressure reducing valve, a throttle valve, an energy accumulator, a first stop valve, a first pressure transmitter, a second stop valve, a second pressure transmitter, a check valve, a plurality of electromagnetic valves, a first water tank and a second water tank; the third water tank is sequentially connected with a filter, a water pump, a pressure reducing valve, a throttle valve, an energy accumulator and a first stop valve through a communicating pipeline, the other end of the first stop valve is connected with the lower end of the rock core holder, and a first pressure transmitter is arranged between the rock core holder and the first stop valve; the upper end of the rock core holder is sequentially connected with a second stop valve and a check valve through a communicating pipeline, the output end of the check valve is divided into two paths, the two paths are respectively connected with a first electromagnetic valve and a second electromagnetic valve, a first water tank and a second water tank are respectively correspondingly arranged at the outlets of the first electromagnetic valve and the second electromagnetic valve, and a second pressure transmitter is arranged between the rock core holder and the second stop valve; the bottom ends inside the first water tank and the second water tank are respectively and correspondingly provided with a first water draining electromagnetic valve and a second water draining electromagnetic valve, and the first water draining electromagnetic valve and the second water draining electromagnetic valve are connected with a water inlet of the third water tank through a water draining pipe.
Further, the confining pressure control system comprises a servo hydraulic cylinder, a third stop valve and a third pressure transmitter, the core holder is connected with the servo hydraulic cylinder, and the third pressure transmitter and the third stop valve are arranged between the servo hydraulic cylinder and the core holder.
Further, the circulating liquid injection and drainage system further comprises a flushing device, the flushing device comprises two float switches, the two float switches are respectively positioned on the upper parts of the inner walls of the first water tank and the second water tank, the float switches are connected with electromagnetic valve controllers, and the electromagnetic valve controllers control the power output of all electromagnetic valves; when the water level in the first water tank reaches the set height, a float switch in the first water tank is started, the electromagnetic valve controller turns off the first electromagnetic valve power supply and the second electromagnetic drain valve power supply, and simultaneously turns on the second electromagnetic valve power supply and the first electromagnetic drain valve power supply; when the water level in the second water tank reaches the set height, a float switch in the second water tank is started, the electromagnetic valve controller closes the second electromagnetic valve power supply and the first drain valve power supply, and simultaneously opens the first electromagnetic valve power supply and the second drain electromagnetic valve power supply.
Further, the timing switch system comprises a power supply and a timer switch socket, wherein the timer switch socket is connected with the power supply, and a power plug of the water pump is inserted into the timer switch socket.
Further, the data acquisition and recording system comprises a first quality sensor, a second quality sensor, a paperless recorder and a computer, wherein the second water tank and the third water tank are respectively hung under the first quality sensor and the second quality sensor, the first pressure transmitter, the third pressure transmitter, the first quality sensor and the second quality sensor are connected with the paperless recorder, and the paperless recorder is connected with the computer.
Further, the first water tank, the second water tank and the third water tank are all made of transparent glass, and a transparent glass cover is arranged at the top of the third water tank.
A water circulation test method for automatically measuring rock permeability for a long time, when water is used as a permeation medium for testing, comprises the following steps:
step 1: connecting the testing device, checking the tightness of the device, closing all valves, ensuring that three water tanks are clean and free of impurities, and injecting clear water into a third water tank;
step 2: loading metal pipes with the same diameter and height of the rock sample into the rock core holder 34, and confirming the closing condition of the rock core holder;
step 3: the working circuit is connected, and the data of each pressure transmitter and each quality sensor are connected into the paperless recorder;
step 4: opening a third stop valve, opening a servo hydraulic cylinder, and increasing the confining pressure to the working confining pressure;
step 5: opening the first stop valve and the second stop valve, and opening the water pump to provide power for the circulating liquid injection and drainage system;
step 6: the method comprises the steps of obtaining required water pressure and flow by observing the record of a paperless recorder, adjusting a pressure reducing valve and a throttle valve, obtaining the along-path pressure loss of a testing device under different flow under the condition of no pattern, drawing a corresponding curve, and taking corresponding data into a computer program;
step 7: switching off the working power supply of the water pump, reducing the confining pressure to zero, closing the first stop valve, the second stop valve and the third stop valve, and taking out the metal pipe;
step 8: and (3) loading a sample to be tested, repeating the steps 4-5, setting a timing switch according to the requirement, and determining the permeation period. Changing the confining pressure value, adjusting the pressure reducing valve and the throttle valve to obtain the required water pressure and flow, and waiting for the device to finish the setting task;
step 9: repeating step 8 under different confining pressure and water pressure conditions;
step 10: switching off the working power supply of the water pump, reducing the confining pressure to zero, taking out the sample, loading the sample into a metal pipe for pressurization, and sucking clear water by the water pump to wash the whole set of testing device;
step 11: and closing the first stop valve, the second stop valve and the third stop valve, and ending the test.
The beneficial effects are that: 1. the device creatively changes the measurement of the quality change of the seepage liquid to reflect the flow change, and the method expands the measurement range of the flow velocity to a plurality of times of the existing instrument, thereby having obvious advantages for researching the limit change of the permeability of the rock mass under the condition of water burst.
2. The device has the advantages that the switch is automatically started and closed at regular time, and rock seepage period test can be carried out under the unattended condition, so that digital control is realized.
3. In addition, the test permeation medium of the test device is in a head-to-tail closed pipeline system, so that the seepage test can be continuously performed for several months in a circulating way, and the manual operation of operators is not needed.
4. All data of the device can be automatically recorded into the paperless recorder and loaded into computer software, so that high-precision data materials are obtained, related data are processed in real time, and observation reading and manual recording are not needed.
Drawings
FIG. 1 is a schematic diagram of a water circulation testing device for automatically measuring rock permeability for a long period of time;
FIG. 2 is a schematic diagram of the working circuit of the present invention.
Detailed Description
The invention is further explained below with reference to the drawings.
As shown in figure 1, the water circulation testing device for automatically measuring the rock permeability for a long time comprises a rock sample clamping and loading system, a circulating liquid injection and drainage system, a timing switch system and a data acquisition and recording system. The rock sample clamping and loading system comprises a rock core clamp 34, a rock sample to be tested is placed in the rock core clamp 34, confining pressure is loaded on the periphery of the rock to be tested through a servo hydraulic cylinder 35 in the rock sample clamping and loading system, and osmotic pressure difference is loaded on two end faces of the rock sample to be tested through a circulating liquid injection and liquid discharge system.
The rock sample clamping and loading system comprises a rock core clamp 34 and a confining pressure control system, the rock sample to be measured is placed in the rock core clamp 34, the confining pressure control system comprises a servo hydraulic cylinder 35, a third stop valve 23 and a third pressure transmitter 13, the rock core clamp is connected with the servo hydraulic cylinder 35, and the third pressure transmitter 13 and the third stop valve 23 are arranged between the servo hydraulic cylinder 35 and the rock core clamp.
The circulating injection and drainage system is used to inject fluid into the core holder 34 and drain fluid from the core holder system to form a closed circulation system. The circulating injection and drainage system comprises a third water tank 43, a filter 31, a water pump 32, a pressure reducing valve 27, a throttle valve 25, an accumulator 33, a first stop valve 21, a first pressure transmitter 11, a second stop valve 22, a check valve 26, a plurality of electromagnetic valves, a first water tank 41 and a second water tank 42. The water outlet of the third water tank 43 is sequentially connected with the filter 31, the water pump 32, the pressure reducing valve 27, the throttle valve 25, the energy accumulator 33 and the first stop valve 21 through a sealing pipeline, the output end of the first stop valve 21 is connected with the lower end of the core holder 34, and the first pressure transmitter 11 is arranged between the core holder 34 and the first stop valve 21. The upper end of the core holder 34 is sequentially connected with the second stop valve 22 and the check valve 26 through communication pipelines, the output end of the check valve 26 is divided into two paths which are respectively connected with the first electromagnetic valve 28 and the second electromagnetic valve 29, the first water tank 41 and the second water tank 42 are respectively correspondingly arranged at the outlets of the first electromagnetic valve and the second electromagnetic valve, and the second pressure transmitter 12 is arranged between the core holder 34 and the second stop valve 22. The first water tank 41 and the second water tank 42 are respectively provided with a first water discharge electromagnetic valve 210 and a second water discharge electromagnetic valve 211 at the bottom ends, and the first water discharge electromagnetic valve 210 and the second water discharge electromagnetic valve 211 are connected with a water inlet of the top cover of the third water tank 43 through water discharge pipes. The first water tank, the second water tank and the third water tank are all made of transparent glass and can be detached to facilitate cleaning, water quality inspection and circulating liquid replacement. The top of the third water tank is provided with a transparent glass cover, so that the problem of insufficient seepage medium is avoided due to long-term water evaporation, and two water inlets are formed in the glass cover, so that seepage liquid can conveniently flow into the third water tank.
The circulating liquid injection and drainage system further comprises an automatic flushing device, the automatic flushing device comprises two float switches, the two float switches are respectively positioned on the upper parts of the inner walls of the first water tank 41 and the second water tank 42, the float switches are connected with the electromagnetic valve controller 54, and the electromagnetic valve controller 54 controls the first electromagnetic valve 28, the second electromagnetic valve 29, the first water drainage electromagnetic valve 210 and the second water drainage electromagnetic valve 211 to work. When the water level in the first water tank 41 reaches the set level, the float switch in the first water tank 41 is activated, and the solenoid valve controller 54 turns off the first solenoid valve 28 power supply and the second solenoid drain valve 211 power supply, and simultaneously turns on the second solenoid valve 29 power supply and the first solenoid drain valve 210 power supply. At this time, the first water tank 41 starts to drain, and the second water tank 42 starts to continue to receive water flow. Similarly, when the water level in the second water tank 42 reaches the set level, the float switch in the second water tank 42 is activated, and the solenoid valve controller 54 turns off the second solenoid valve 29 and the first drain valve 210, while turning on the first solenoid valve 28 and the second drain solenoid valve 211. At this time, the second water tank 42 starts to drain, and the first water tank 41 starts to continue to receive water flow.
The timing switch system is used for controlling the starting and ending time of the circulating liquid injection and liquid discharge system. The timed switching system includes a power supply and timer switch socket 53. The timer switch socket 53 is connected with a power supply, the power plug of the water pump 33 is connected to the timer switch socket 53, and the starting and closing time is set through the timer switch socket 53, so that the on and off of the circulating liquid injection and liquid discharge system are controlled.
The data acquisition and recording system is used for receiving all data in a water circulation testing device for automatically measuring the rock permeability for a long time. The data acquisition and recording system comprises a first mass sensor 37, a second mass sensor 38, a paperless recorder 52 and a computer 51, wherein the first pressure transmitter, the second pressure transmitter, the third pressure transmitter and the two mass sensors are connected with the paperless recorder 52, and the paperless recorder 52 is connected with the computer. The second water tank and the third water tank are respectively hung under the first mass sensor 37 and the second mass sensor 38, and a flow test unit consisting of the first mass sensor 37, the first water tank 41 and the first water discharge electromagnetic valve 210 is not contacted with the first electromagnetic valve 28 and the third water tank 43; similarly, the flow rate test unit composed of the second mass sensor 38, the second water tank 42 and the second drain solenoid valve 211 is not in contact with the second solenoid valve 29 and the third water tank 43. The mass change measured by the mass sensor is converted into a water flow rate change. The paperless recorder directly receives the data of all transmitters and quality sensors, synchronously processes the test data through spontaneous computer software and draws images, and eliminates the along-path pressure loss of the device in the calculation process.
In the test with water as the permeation medium, the specific test method of the invention is as follows:
step 1: the testing device is connected, the tightness of the device is checked, all valves are closed, the cleaning of the three water tanks is ensured to be free from impurities, and clean water 43 is injected into the third water tank;
step 2: loading metal pipes with the same diameter and height of the rock sample into the rock core holder 34, and confirming the closing condition of the rock core holder 34;
step 3: the working circuit is connected, and the data of each pressure transmitter and each quality sensor are connected into the paperless recorder 52;
step 4: opening the third stop valve 23, opening the servo hydraulic cylinder 35, and increasing the confining pressure to the working confining pressure;
step 5: the first stop valve 21 and the second stop valve 22 are opened, and the diaphragm pump 32 is opened to provide power for the circulating liquid injection and drainage system;
step 6: the required water pressure and flow are obtained by observing the record of the paperless recorder 52, the pressure reducing valve 27 and the throttle valve 25 are adjusted, the along-path pressure loss of the testing device under different flow is obtained under the condition of no pattern, corresponding curves are drawn, and corresponding data are brought into a computer program;
step 7: switching off the working power supply of the water pump 32, reducing the confining pressure to zero, closing the first stop valve 21, the second stop valve 22 and the third stop valve 23, and taking out the metal pipe;
step 8: and (3) loading a sample to be tested, repeating the steps 4-5, setting a timing switch according to the requirement, and determining the permeation period. Changing the confining pressure value, adjusting the pressure reducing valve 27 and the throttle valve 25 to obtain the required water pressure and flow, and waiting for the device to complete the setting task;
step 9: repeating step 8 under different confining pressure and water pressure conditions;
step 10: switching off the working power supply of the water pump, reducing the confining pressure to zero, taking out the sample, loading the sample into a metal pipe for pressurization, sucking clear water by the water pump to flush the whole set of testing device, ensuring that no residual rock debris in the testing equipment is convenient for subsequent testing, and filtering the rock debris eroded in the three water tanks by filter paper to facilitate testing and analysis;
step 11: the first stop valve 21, the second stop valve 22 and the third stop valve 23 are closed and the test is ended.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (5)
1. A water circulation testing device for automatically measuring rock permeability change for a long period of time, comprising:
the rock sample clamping and loading system comprises a rock core clamp and a confining pressure control system, and a rock sample to be tested is placed in the rock core clamp;
the circulating liquid injection and drainage system is used for injecting liquid into the rock core clamp holder and draining the liquid from the rock core clamp holder system to form a closed circulation system;
the timing switch system is used for controlling the time for starting and ending the operation of the circulating liquid injection and drainage system;
the data acquisition and recording system is used for receiving test data;
the circulating liquid injection and drainage system comprises a third water tank, a filter, a water pump, a pressure reducing valve, a throttle valve, an energy accumulator, a first stop valve, a first pressure transmitter, a second stop valve, a second pressure transmitter, a check valve, a plurality of electromagnetic valves, a first water tank and a second water tank; the third water tank is sequentially connected with a filter, a water pump, a pressure reducing valve, a throttle valve, an energy accumulator and a first stop valve through a communicating pipeline, the other end of the first stop valve is connected with the lower end of the rock core holder, and a first pressure transmitter is arranged between the rock core holder and the first stop valve; the upper end of the rock core holder is sequentially connected with a second stop valve and a check valve through a communicating pipeline, the output end of the check valve is divided into two paths, the two paths are respectively connected with a first electromagnetic valve and a second electromagnetic valve, a first water tank and a second water tank are respectively correspondingly arranged at the outlets of the first electromagnetic valve and the second electromagnetic valve, and a second pressure transmitter is arranged between the rock core holder and the second stop valve; the bottom ends of the first water tank and the second water tank are respectively provided with a first water draining electromagnetic valve and a second water draining electromagnetic valve correspondingly, and drain pipes of the first water draining electromagnetic valve and the second water draining electromagnetic valve are aligned with a water inlet of the third water tank;
the confining pressure control system comprises a servo hydraulic cylinder, a third stop valve and a third pressure transmitter, the core holder is connected with the servo hydraulic cylinder, and the third pressure transmitter and the third stop valve are arranged between the servo hydraulic cylinder and the core holder;
the circulating liquid injection and drainage system further comprises a flushing device, the flushing device comprises two float switches, the two float switches are respectively positioned on the upper parts of the inner walls of the first water tank and the second water tank, the float switches are connected with an electromagnetic valve controller, and the electromagnetic valve controller controls the power output of each electromagnetic valve; when the water level in the first water tank reaches the set height, a float switch in the first water tank is started, the electromagnetic valve controller turns off the first electromagnetic valve power supply and the second electromagnetic drain valve power supply, and simultaneously turns on the second electromagnetic valve power supply and the first electromagnetic drain valve power supply; when the water level in the second water tank reaches the set height, a float switch in the second water tank is started, the electromagnetic valve controller closes the second electromagnetic valve power supply and the first drain valve power supply, and simultaneously opens the first electromagnetic valve power supply and the second drain electromagnetic valve power supply;
surrounding pressure is loaded on the periphery of the rock to be tested through a servo hydraulic cylinder in a rock sample clamping and loading system, and osmotic pressure difference is loaded on two end faces of the rock sample to be tested through a circulating liquid injection and liquid discharge system.
2. The water circulation testing device for automatically measuring rock permeability for a long period of time according to claim 1, wherein the timing switch system comprises a power supply and a timer switch socket, the timer switch socket is connected with the power supply, and a power plug of the water pump is plugged into the timer switch socket.
3. The water circulation testing device for automatically measuring rock permeability for a long time according to claim 2, wherein the data acquisition and recording system comprises a first mass sensor, a second mass sensor, a paperless recorder and a computer, the second water tank and the third water tank are respectively hung under the first mass sensor and the second mass sensor, the first pressure transmitter, the third pressure transmitter, the first mass sensor and the second mass sensor are connected with the paperless recorder, and the paperless recorder is connected with the computer.
4. The water circulation testing device for automatically measuring rock permeability for a long period of time according to claim 2, wherein the first water tank, the second water tank and the third water tank are all made of transparent glass, and a transparent glass cover is arranged on the top of the third water tank.
5. The method for automatically measuring the permeability of rock for a long time according to the device of claim 1, wherein the water circulation test method comprises the following steps when water is used as a permeation medium:
step 1: connecting the testing device, checking the tightness of the device, closing all valves, ensuring that three water tanks are clean and free of impurities, and injecting clear water into a third water tank;
step 2: loading metal pipes with the same diameter and height of the rock sample into a rock core clamp holder (34), and confirming the closing condition of the rock core clamp holder;
step 3: the working circuit is connected, and the data of each pressure transmitter and each quality sensor are connected into the paperless recorder;
step 4: opening a third stop valve, opening a servo hydraulic cylinder, and increasing the confining pressure to the working confining pressure;
step 5: opening the first stop valve and the second stop valve, and opening the water pump to provide power for the circulating liquid injection and drainage system;
step 6: the method comprises the steps of obtaining required water pressure and flow by observing the record of a paperless recorder, adjusting a pressure reducing valve and a throttle valve, obtaining the along-path pressure loss of a testing device under different flow under the condition of no pattern, drawing a corresponding curve, and taking corresponding data into a computer program;
step 7: switching off the working power supply of the water pump, reducing the confining pressure to zero, closing the first stop valve, the second stop valve and the third stop valve, and taking out the metal pipe;
step 8: loading a sample to be tested, repeating the steps 4-5, setting a timing switch according to the requirement, and determining the permeation period; changing the confining pressure value, adjusting the pressure reducing valve and the throttle valve to obtain the required water pressure and flow, and waiting for the device to finish the setting task;
step 9: repeating step 8 under different confining pressure and water pressure conditions;
step 10: switching off the working power supply of the water pump, reducing the confining pressure to zero, taking out the sample, loading the sample into a metal pipe for pressurization, and sucking clear water by the water pump to wash the whole set of testing device;
step 11: and closing the first stop valve, the second stop valve and the third stop valve, and ending the test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811143733.5A CN109115669B (en) | 2018-09-29 | 2018-09-29 | Water circulation testing device and method for automatically measuring rock permeability change for long term |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811143733.5A CN109115669B (en) | 2018-09-29 | 2018-09-29 | Water circulation testing device and method for automatically measuring rock permeability change for long term |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109115669A CN109115669A (en) | 2019-01-01 |
| CN109115669B true CN109115669B (en) | 2023-06-16 |
Family
ID=64857202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811143733.5A Active CN109115669B (en) | 2018-09-29 | 2018-09-29 | Water circulation testing device and method for automatically measuring rock permeability change for long term |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109115669B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111337402A (en) * | 2019-11-01 | 2020-06-26 | 东华大学 | Quick testing arrangement of different thickness fiber fabric in-plane permeability |
| CN112161889A (en) * | 2020-08-28 | 2021-01-01 | 鞍钢集团北京研究院有限公司 | Device and method for testing seawater and sea ice mixture abrasion resistance of steel |
| CN113109230B (en) * | 2021-03-30 | 2022-11-04 | 中国电建集团西北勘测设计研究院有限公司 | Novel earth and rockfill dam construction material seepage deformation test system and method |
| CN113533169A (en) * | 2021-07-28 | 2021-10-22 | 长江水利委员会长江科学院 | Underground water seal oil cave depot surrounding rock wall infiltration collection device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4133058A (en) * | 1976-03-02 | 1979-01-09 | Baker William H | Automated pool level and skimming gutter flow control system |
| US4773254A (en) * | 1987-07-07 | 1988-09-27 | Chevron Research Company | Automated steady state relative permeability measurement system |
| CN1963455A (en) * | 2006-11-02 | 2007-05-16 | 中国海洋大学 | Automatic wetting and drying cycle apparatus for corrosion test sample |
| CN203165339U (en) * | 2013-04-01 | 2013-08-28 | 徐州工业职业技术学院 | Multifunctional liquid level control experimental device |
| CN103760087A (en) * | 2014-01-21 | 2014-04-30 | 盐城工学院 | Permeating device for sustainable pressurization of rock body seepage test |
| CN105675469A (en) * | 2016-01-25 | 2016-06-15 | 中国矿业大学 | Full-automatic test system and measurement method for gas permeability of rock |
| CN205826477U (en) * | 2016-07-01 | 2016-12-21 | 重庆科技学院 | A kind of novel core permeability tester |
| CN106872329A (en) * | 2016-12-30 | 2017-06-20 | 中国矿业大学 | A kind of test device and method of testing for surveying Thief zone rock Test Liquid Permeability of Core |
| KR101800383B1 (en) * | 2016-05-16 | 2017-11-23 | 동아대학교 산학협력단 | Isothermal and tri-axial pressure conditioned rock permeability measurement system |
-
2018
- 2018-09-29 CN CN201811143733.5A patent/CN109115669B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4133058A (en) * | 1976-03-02 | 1979-01-09 | Baker William H | Automated pool level and skimming gutter flow control system |
| US4773254A (en) * | 1987-07-07 | 1988-09-27 | Chevron Research Company | Automated steady state relative permeability measurement system |
| CN1963455A (en) * | 2006-11-02 | 2007-05-16 | 中国海洋大学 | Automatic wetting and drying cycle apparatus for corrosion test sample |
| CN203165339U (en) * | 2013-04-01 | 2013-08-28 | 徐州工业职业技术学院 | Multifunctional liquid level control experimental device |
| CN103760087A (en) * | 2014-01-21 | 2014-04-30 | 盐城工学院 | Permeating device for sustainable pressurization of rock body seepage test |
| CN105675469A (en) * | 2016-01-25 | 2016-06-15 | 中国矿业大学 | Full-automatic test system and measurement method for gas permeability of rock |
| KR101800383B1 (en) * | 2016-05-16 | 2017-11-23 | 동아대학교 산학협력단 | Isothermal and tri-axial pressure conditioned rock permeability measurement system |
| CN205826477U (en) * | 2016-07-01 | 2016-12-21 | 重庆科技学院 | A kind of novel core permeability tester |
| CN106872329A (en) * | 2016-12-30 | 2017-06-20 | 中国矿业大学 | A kind of test device and method of testing for surveying Thief zone rock Test Liquid Permeability of Core |
Non-Patent Citations (2)
| Title |
|---|
| 基于PID控制器三容水箱液位的控制设计;杨小强;刘静;黄晓艳;;宁波职业技术学院学报(第04期);全文 * |
| 基于PLC的液体循环控制系统的设计与应用;何立新;徐鹏飞;郝继峰;;中国教育技术装备(第08期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109115669A (en) | 2019-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109115669B (en) | Water circulation testing device and method for automatically measuring rock permeability change for long term | |
| CN202018415U (en) | Aquifer parameter testing device under simulated water pumping conditions | |
| US4215567A (en) | Method and apparatus for testing a production stream | |
| CN111411930B (en) | Visual dynamic filtration and drainage simulation device and simulation method for tight gas reservoir fracturing fluid | |
| CN111239023B (en) | Method for testing rock compression coefficient under high-temperature and high-pressure conditions | |
| CN1963455A (en) | Automatic wetting and drying cycle apparatus for corrosion test sample | |
| CN109959775A (en) | A kind of pressure stabilizing simulation grouting test device and its application method | |
| CN110231279B (en) | Comprehensive test method for dry-wet cycle corrosion of rock | |
| CN101672756A (en) | Full-automatic pollution index value online monitoring instrument | |
| CN219496362U (en) | Mobile detection equipment for SDI value | |
| CN111562351B (en) | Automatic monitoring device and method for water quality pollution index of reverse osmosis equipment inlet water | |
| CN112525797A (en) | Soil body horizontal permeability coefficient testing device | |
| CN110043243B (en) | Drilling fluid filtration loss measurement device and method | |
| CN210291428U (en) | Pipeline fluid medium leakage detection device | |
| CN202066653U (en) | Automatic oil circuit leakage detection and control system of test bed of vehicle part | |
| CN105223254B (en) | One kind sampling pretreatment and many streams switch PH measurement apparatus | |
| CN209247683U (en) | A kind of automatic control oxygen consumption rate detection device | |
| CN208313774U (en) | A kind of waterpower industry geomembrane permeability coefficient determinator | |
| CN208762991U (en) | A kind of improved permeameter water system | |
| KR102011432B1 (en) | Flushing system of water quality analysis equipment | |
| CN207908256U (en) | A kind of program-controlled efficient pilot system for container class product pressure test | |
| CN213957210U (en) | Online automatic calibration device of pH meter | |
| CN210152635U (en) | Drilling fluid filtration loss measuring device | |
| CN211527944U (en) | Water quality monitoring preprocessing device and water quality monitoring system | |
| CN209182205U (en) | A kind of long-term automatic measurement rock becomes the water circulation test device of permeability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |