CN115825396A - Temperature and pressure controllable rock-soil disintegration testing device and using method thereof - Google Patents
Temperature and pressure controllable rock-soil disintegration testing device and using method thereof Download PDFInfo
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- CN115825396A CN115825396A CN202211635270.0A CN202211635270A CN115825396A CN 115825396 A CN115825396 A CN 115825396A CN 202211635270 A CN202211635270 A CN 202211635270A CN 115825396 A CN115825396 A CN 115825396A
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Abstract
The invention discloses a temperature and pressure controllable rock soil disintegration testing device and a using method thereof. The invention simulates the temperature and water pressure environment of the bank slope rock-soil body after the water storage of the reservoir by controlling the temperature and the pressure of the pressure chamber, and measures the disintegration rate and the disintegration loss rate of the bank slope rock-soil body under certain temperature and water pressure conditions.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering testing, and particularly relates to a rock-soil disintegration testing device capable of controlling temperature and pressure and a using method thereof.
Background
The deformation body displacement development influence of the bank slope in the storage and drainage process of the reservoir is obvious, the displacement of the bank slope deformation body in the initial storage stage of the reservoir can be suddenly changed, the displacement of the deformation body in the later drainage stage is also developed, and the storage and drainage of the reservoir can influence the integrity of the bank slope rock-soil body for a long time. In the water storage stage of the reservoir, water gradually submerges the reservoir bank slope rock-soil body, and the hydrostatic pressure borne by the reservoir bank slope rock-soil body is gradually increased along with the increase of the water level; in the reservoir drainage stage, the hydrostatic pressure borne by reservoir bank slope rock-soil bodies is gradually reduced along with the reduction of the water level; however, the temperatures of water bodies in different seasons are different, the bank side slope is in the variable pressure and temperature environment for a long time under the long-term influence of water storage and drainage of the reservoir, and the collapse resistance of rock and soil bodies, particularly soft argillization interlayers in the temperature and pressure environment needs to be determined through tests, so that the method has important theoretical and practical significance for preventing and controlling the deformation mechanism and risk of the bank side slope deformation body in the water storage and drainage process of the reservoir.
At present, the rock-soil disintegration test is carried out under atmospheric pressure by using the device and the method, only the influence of temperature is considered, the influence of hydrostatic pressure is not considered, the temperature and hydrostatic pressure conditions in the water storage and drainage process of a reservoir cannot be reflected, the existing rock-soil disintegration test result carried out under atmospheric pressure cannot be used for explaining the rock-soil body disintegration mechanism of the bank slope in the water storage and drainage process of the reservoir, and the deformation mechanism and the risk prevention and control research of the bank slope deformed body are limited.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a temperature and pressure controllable rock disintegration testing device and a using method thereof, and solves the problems that in the prior art, only the influence of temperature is considered, the influence of hydrostatic pressure is not considered, and the temperature and hydrostatic pressure conditions in the water storage and drainage process of a reservoir cannot be reflected.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: the utility model provides a rock soil disintegration testing arrangement of controllable temperature and pressure, including the pressure chamber, the pressure chamber is located on the metal base, the metal roof is connected through rubber packing ring at the pressure chamber top, the metal roof passes through screw rod and hexagon nut and is connected with the metal base, be equipped with fixed establishment on the metal roof, fixed establishment is connected with the member, the member passes through the dynamometer and is connected with the metal string bag, the metal string bag is equipped with the sample, the metal base upper surface is equipped with the copper pipe circle, the copper pipe circle links to each other with the temperature control case, the metal base middle part is equipped with three way valve, three way valve one end is passed through the drain pipe and is connected with the water tank, the three way valve other end passes through the water injection pipe and is connected with the water pump, the metal roof lower surface is equipped with the digital display thermometer, the digital display thermometer passes through data line and probe connection.
Preferably, the fixing mechanism is composed of support screws and a reaction beam, the two support screws are arranged on the metal top plate, the reaction beam is connected with the two support screws through a flange nut II, and the middle part of the reaction beam is connected with the rod piece.
Preferably, the two sides of the metal top plate are provided with an exhaust hole bolt and an air inlet hole, and the air inlet hole is connected with a pressure controller through a hose.
Preferably, the dynamometer is connected with the metal net bag through a metal wire, and the dynamometer is connected with the terminal through a data line.
Preferably, the pressure controller is connected with an air compressor, and the pressure controller is connected with the terminal through a data line.
Preferably, a heat insulation pad is arranged between the metal base and the copper pipe ring.
Preferably, the rod piece is connected with the metal top plate through a flange nut I.
Preferably, the copper pipe ring is a hollow heat conduction pipe and is spirally arranged in the pressure chamber, the inlet end of the copper pipe ring is connected with the water outlet end of the temperature control box through a water inlet hole, and the outlet end of the copper pipe ring is connected with the water inlet end of the temperature control box through a water outlet hole.
Preferably, the bandage is wrapped on the outer wall of the pressure chamber, and the sample is a cube.
The invention discloses a use method of a rock-soil disintegrating device with controllable temperature and pressure, which is characterized by comprising the following steps of:
step one, preparing a sample and putting the sample into a metal net bag;
secondly, placing a rubber gasket into a groove in the top of the pressure chamber to ensure the sample to be horizontal, covering a metal top plate, and sleeving a screw to screw a hexagon nut;
step three, opening the pressure controller and checking the sealing state of the pressure chamber;
screwing out the vent hole bolt, screwing the three-way valve to the direction of the water inlet pipe, opening the water pump to inject water into the pressure chamber, enabling the water surface to be lower than the dynamometer, closing the three-way valve, and screwing down the vent hole bolt;
step five, starting a temperature control box, moving a rod piece downwards when water in the pressure chamber reaches a specified temperature to ensure that the water in the pressure chamber completely submerges a sample, screwing a flange nut I, moving a counter-force beam to be in contact with the rod piece, and screwing a flange nut II;
step six, starting a pressure controller to calculate target pressure according to the actual water level depth, determining test pressure acceleration according to the actual water level lifting speed, inputting the target pressure and the pressure acceleration by a terminal, and waiting until the pressure in a pressure chamber reaches a target value; and monitoring the dynamometer in real time to obtain a gravity-time relation curve under different temperature and pressure conditions, and calculating the disintegration rate and the disintegration loss rate of the rock-soil material under a certain temperature and pressure condition according to the gravity-time relation curve.
Compared with the prior art, the invention has the following beneficial effects: a pressure chamber of a rock soil disintegration testing device with controllable temperature and pressure is provided with a dynamometer, a metal net bag is hung under the dynamometer, and a test sample is placed in the metal net bag; the pressure controller is connected with the air compressor and is externally connected with a terminal, so that specific pressure conditions in the pressure chamber can be realized; a heat conduction copper pipe ring arranged at the bottom of the pressure chamber is connected with a temperature control box, so that specific temperature conditions in the pressure chamber can be realized; the three-way valve is connected with a water tank pump to realize testing under different water levels, the dynamometer can move up and down due to the arrangement of the fixing mechanism, pressure measurement of samples in the pressure chamber under different water level depths is met, and the digital display thermometer is arranged in the pressure chamber to measure the temperature of liquid in the pressure chamber; the device has the advantages of reasonable and concise structure, easy implementation, simple operation and high precision.
Furthermore, the rod piece can move up and down due to the setting of the fixing mechanism, so that the water in the pressure chamber is ensured to completely immerse the sample, and the accuracy of the measured data is higher.
Furthermore, the dynamometer and the pressure controller are connected with the terminal, so that an operator can clearly measure data through experiments and has better feedback.
Furthermore, the bandage restrains the lateral deformation of the pressure chamber, and two circles of bandages are arranged above and below the pressure chamber, so that a camera can be used for shooting an internal sample of the pressure chamber in the middle. The cubic sample allows the water pressure to be consistent for each face that is in contact with the water when measured.
Furthermore, the temperature control box has the advantage that the temperature range of water (containing salt) in the pressure chamber can be controlled to be 0-30 ℃, and the low-temperature water environment in the pressure chamber is realized. The copper pipe circle is hollow heat pipe and spiral and locates in the pressure chamber for the temperature in the pressure chamber can be heated evenly.
In conclusion, the method can simultaneously consider the influence of water pressure and temperature on the rock-soil disintegration, overcomes the influence of neglecting water pressure in the prior rock-soil disintegration test, directly reflects the water pressure condition of the bank slope rock-soil body by considering the water pressure, simulates the temperature and water pressure environment of the bank slope rock-soil body after the reservoir is stored by controlling the temperature and the pressure of the pressure chamber, measures the disintegration rate and the disintegration loss rate of the bank slope rock-soil body under certain temperature and water pressure conditions, and can reveal the control mechanism of the temperature and the pressure on the disintegration of a certain rock-soil body by analyzing the disintegration rate and the disintegration loss rate.
Drawings
FIG. 1 is a front view of a temperature and pressure controllable rock disintegration testing apparatus;
FIG. 2 is a side view of a pressure chamber of a temperature and pressure controllable rock disintegration testing apparatus;
FIG. 3 is a top view of a pressure chamber of a temperature and pressure controllable rock disintegration testing apparatus;
FIG. 4 is an external view of a metal roof of a temperature and pressure controllable rock disintegration testing apparatus;
FIG. 5 is an inside view of a metal roof of a temperature and pressure controllable rock disintegration testing apparatus;
FIG. 6 is a side view of a metal base of a temperature and pressure controlled rock disintegration test apparatus;
FIG. 7 is a top view of a measurement system of a temperature and pressure controllable rock disintegration testing apparatus;
FIG. 8 is a side view of a metal roof of a temperature and pressure controlled rock disintegration test apparatus;
wherein: 1-a pressure chamber; 2-a bandage; 3-a metal base; 4-a metal top plate; 5-a rubber gasket; 6-screw rod; 7-a hexagonal nut; 8-vent hole bolt; 9-flange nut I; 10-a rod member; 11-bracket screw; 12-a counter-force beam; 13-flange nut ii; 14-an air intake; 15-a hose; 16-a pressure controller; 17-a data line; 18-a heat insulation mat; 19-water inlet holes; 20-copper pipe ring; 21-water outlet; 22-a water pipe; 23-a temperature control box; a 24-way valve; 25-a drain pipe; 26-a water injection pipe; 27-a water pump; 28-a water tank; 29-a force gauge; 30-a wire; 31-metal net bag; 32-sample; 33-digital display thermometer; 34-probe.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, a temperature and pressure controllable rock soil disintegration testing device, which comprises an organic glass pressure chamber 1, wherein the organic glass pressure chamber 1 is arranged on a metal base 3, the outer wall of the organic glass pressure chamber 1 is wrapped with a bandage 2, the top of the organic glass pressure chamber 1 is connected with a metal top plate 4 through a rubber gasket 5, referring to fig. 4, the metal top plate 4 is connected with the metal base 3 through a screw rod 6 and a hexagon nut 7, referring to fig. 2, a fixing mechanism is arranged on the metal top plate 4 and connected with a rod piece 10, the rod piece 10 is connected with a metal net bag 31 through a dynamometer 29, the metal net bag 31 is provided with a sample 32, referring to fig. 3, the upper surface of the metal base 3 is provided with a copper pipe ring 20, the inlet end of the copper pipe ring 20 is connected with the water outlet end of a temperature control box 23, the outlet end of the copper pipe ring 20 is connected with the water inlet end of the temperature control box 23, the middle part of the metal base 3 is provided with a three-way valve 24, one end of the three-way valve 24 is connected with a water tank 28 through a drain pipe 25, the other end of the three-way valve 24 is connected with a water pump 27 through a water injection pipe 26, the lower surface of the metal top plate 4 is provided with a thermometer 33, and the digital display thermometer 33 is connected with a digital display 34 through a data line 17.
Referring to fig. 8, the fixing mechanism is composed of support screws 11 and a reaction beam 12, the two support screws 11 are arranged on the metal top plate 4, the reaction beam 12 is connected with the two support screws 11 through a flange nut ii 13, the middle part of the reaction beam 12 is connected with a rod 10, and the rod 10 is connected with the metal top plate 4 through a flange nut i 9. Referring to fig. 1 and 5, the metal top plate 4 is provided with vent bolts 8 and air inlets 14 on both sides thereof, the air inlets 14 are connected to a pressure controller 16 through a hose 15, the pressure controller 16 is connected to an air compressor, and the pressure controller 16 is connected to a terminal through a data line. Referring to fig. 7, the load cell 29 is connected to a metal net bag 31 through a wire 30, and the load cell 29 is connected to the terminal through a data line 17. Referring to fig. 6, a heat insulation pad 18 is disposed between the metal base 3 and the copper pipe 20, the copper pipe 20 is a hollow heat conduction pipe and is spirally disposed in the organic glass pressure chamber 1, the inlet end of the copper pipe 20 is connected to the water outlet end of the temperature control box 23 through the water inlet hole 19, and the outlet end of the copper pipe 20 is connected to the water inlet end of the temperature control box 23 through the water outlet hole 21.
A method for using the rock-soil disintegration with controllable temperature and pressure comprises the following steps:
step one, preparing a cubic sample 32 and putting the sample into a metal net bag 31;
secondly, coating vaseline on the rubber gasket 5, placing the rubber gasket into a groove in the top of the pressure chamber 1 to ensure that the sample 32 is horizontal, covering a metal top plate 4, sleeving a screw 6 and screwing a hexagon nut 7;
step three, opening the pressure controller 16, outputting air pressure to monitor air pressure change, and checking the sealing state of the pressure chamber 1;
screwing out the vent bolt 8, screwing the three-way valve 24 to the direction of the water inlet pipe 26, opening a water pump 27 switch to inject water into the pressure chamber 1, enabling the water surface to be lower than the dynamometer 29, closing the three-way valve 24, and screwing down the vent bolt 8;
step five, starting the temperature control box 23 to set the specified temperature, determining the specified temperature according to the local water temperature condition, and observing whether the digital display thermometer 33 reaches the specified temperature; when the water in the pressure chamber 1 reaches a specified temperature, moving the rod piece 10 downwards to ensure that the water in the pressure chamber 1 completely submerges the sample 32, screwing the flange nut I9, moving the counter-force beam 12 to be in contact with the rod piece 10, and screwing the flange nut II 13;
step six, starting the pressure controller 16 according to the actual conditionsCalculating a target pressure P =9.8 × h (kPa) by using the water level depth h (m), determining a test pressure increment delta P according to the actual water level lifting rate, quickly reaching the target pressure, slowly reaching the target pressure, inputting the target pressure P and the pressure increment delta P into a computer, starting pressurization until the target pressure is reached, stabilizing the pressure at the target pressure by using a pressure controller 16, and waiting until the pressure in the pressure chamber 1 reaches the target value; the gravity change of the sample 32 is monitored in real time through the dynamometer 29, a gravity-time curve is obtained according to the gravity value and the time of the dynamometer 29, and the dynamometer 29 initially reads g 1 The dynamometer 29 reads g at any time t t And changing the temperature and the pressure to obtain a gravity-time curve relation curve under other temperature and pressure conditions. Calculating to obtain the disintegration loss rate I = (g) of the rock-soil material under different temperature T and different pressure P conditions according to the gravity-time relation curve under different temperature and different pressure conditions 1 -g t )/g 1 Calculating to obtain the disintegration rate J = (g) of the rock-soil material in delta T time under different temperature T and different pressure P conditions 1 -g t )/Δt。
In conclusion, the invention simulates the temperature and water pressure environment of the bank slope rock-soil mass after the reservoir stores water by controlling the temperature and the pressure of the pressure chamber, and measures the disintegration rate and the disintegration loss rate of the bank slope rock-soil mass under certain temperature and water pressure conditions.
The above contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention should not be limited thereby, and any modification made on the basis of the technical idea proposed by the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a rock soil disintegration testing arrangement of controllable temperature and pressure, a serial communication port, including pressure chamber (1), metal foundation (3) is located in pressure chamber (1), metal roof (4) is connected through rubber packing ring (5) at pressure chamber (1) top, metal roof (4) are connected with metal foundation (3) through screw rod (6) and hexagon nut (7), be equipped with fixed establishment on metal roof (4), fixed establishment is connected with member (10), member (10) are connected with metal string bag (31) through dynamometer (29), metal string bag (31) are equipped with sample (32), metal foundation (3) upper surface is equipped with copper pipe circle (20), copper pipe circle (20) link to each other with temperature control box (23), metal foundation (3) middle part is equipped with three way valve (24), three way valve (24) one end is passed through drain pipe (25) and is connected with water tank (28), the three way valve (24) other end passes through water injection pipe (26) and is connected with water pump (27), metal roof (4) lower surface is equipped with three way valve (33), thermometer (33) pass through digital display line (17) and are connected with digital display probe.
2. The temperature and pressure controllable rock soil disintegration testing device according to claim 1, wherein the fixing mechanism is composed of support screws (11) and a reaction beam (12), the two support screws (11) are arranged on the metal top plate (4), the reaction beam (12) is connected with the two support screws (11) through a flange nut II (13), and the middle part of the reaction beam (12) is connected with the rod piece (10).
3. A temperature and pressure controllable rock disintegration testing device according to claim 1, wherein the metal top plate (4) is provided with vent bolts (8) and air inlets (14) on both sides, and the air inlets (14) are connected to a pressure controller (16) through hoses (15).
4. A temperature and pressure controlled rock soil disintegration test apparatus as claimed in claim 1 wherein the load cell (29) is connected to the metal string bag (31) by a wire (30), the load cell (29) being connected to the terminal by a data line (17).
5. A temperature and pressure controlled rock disintegration test apparatus according to claim 3 wherein the pressure controller (16) is connected to an air compressor, the pressure controller (16) being connected to the terminal by a data line (17).
6. A temperature and pressure controllable rock disintegration testing device according to claim 1, characterised in that a thermal insulation blanket (18) is provided between the metal base (3) and the copper pipe collar (20).
7. A temperature and pressure controlled rock disintegration test apparatus as claimed in claim 1, wherein the rod member (10) is connected to the metal top plate (4) by a flange nut i (9).
8. The temperature and pressure controllable rock soil disintegration testing device according to claim 1, wherein the copper pipe ring (20) is a hollow heat-conducting pipe and is spirally arranged in the pressure chamber (1), the inlet end of the copper pipe ring (20) is connected with the water outlet end of the temperature control box (23) through the water inlet hole (19), and the outlet end of the copper pipe ring (20) is connected with the water inlet end of the temperature control box (23) through the water outlet hole (21).
9. A temperature and pressure controlled rock disintegration testing device according to claim 1 wherein the pressure chamber (1) is wrapped with a bandage (2) and the sample (32) is a cube.
10. A method of using a temperature and pressure controlled rock mass disintegration apparatus according to any one of claims 1 to 9 including the steps of:
firstly, preparing a sample (32) and putting the sample into a metal net bag (31);
secondly, placing the rubber gasket (5) into a groove in the top of the pressure chamber (1) to ensure that the sample (32) is horizontal, covering a metal top plate (4), and sleeving a screw (6) to screw down a hexagon nut (7);
step three, opening the pressure controller (16) and checking the sealing state of the pressure chamber (1);
screwing out the vent bolt (8), screwing the three-way valve (24) to the direction of the water inlet pipe (26), opening the water pump (27) to inject water into the pressure chamber (1), enabling the water surface to be lower than the dynamometer (29), closing the three-way valve (24), and screwing down the vent bolt (8);
step five, starting a temperature control box (23), moving a rod piece (10) downwards when water in the pressure chamber (1) reaches a specified temperature, ensuring that the water in the pressure chamber (1) completely immerses a sample (32), screwing a flange nut I (9), moving a counter-force beam (12) to be in contact with the rod piece (10), and screwing a flange nut II (13);
step six, starting a pressure controller (16) to calculate target pressure according to the actual water level depth, determining test pressure acceleration according to the actual water level lifting speed, inputting the target pressure and the pressure acceleration by a terminal, and when the pressure in the pressure chamber (1) reaches a target value; and (3) monitoring the dynamometer (29) in real time to obtain gravity-time relation curves under different temperature and different pressure conditions, and calculating the disintegration rate and the disintegration loss rate of the rock and soil material under a certain temperature and pressure condition according to the gravity-time relation curves.
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| CN202211635270.0A CN115825396A (en) | 2022-12-19 | 2022-12-19 | Temperature and pressure controllable rock-soil disintegration testing device and using method thereof |
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| CN202211635270.0A CN115825396A (en) | 2022-12-19 | 2022-12-19 | Temperature and pressure controllable rock-soil disintegration testing device and using method thereof |
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| WO2014098776A2 (en) * | 2012-12-17 | 2014-06-26 | Ga Drilling, A. S. | Multimodal rock disintegration by thermal effect and system for performing the method |
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| CN105424527A (en) * | 2016-01-01 | 2016-03-23 | 三峡大学 | Tester simulating soaking-air drying rock cyclic action of hydro-fluctuation belt of reservoir bank slope |
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| CN113092723A (en) * | 2021-04-07 | 2021-07-09 | 中煤科工集团重庆研究院有限公司 | Mud rock expansion test device |
| CN113466435A (en) * | 2021-07-29 | 2021-10-01 | 长安大学 | Rock-soil disintegration test device and test method |
| CN216284777U (en) * | 2021-09-29 | 2022-04-12 | 西南交通大学 | Test device capable of measuring soil moisture and rock collapse resistance |
| CN217655115U (en) * | 2022-01-17 | 2022-10-25 | 高庆泽 | Civil engineering geotechnical disintegration test device |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5767399A (en) * | 1996-03-25 | 1998-06-16 | Dresser Industries, Inc. | Method of assaying compressive strength of rock |
| CN101789198A (en) * | 2010-01-21 | 2010-07-28 | 三峡大学 | Water-rock acting mechanism tester in simulated reservoir water pressure state |
| WO2014098776A2 (en) * | 2012-12-17 | 2014-06-26 | Ga Drilling, A. S. | Multimodal rock disintegration by thermal effect and system for performing the method |
| CN105043889A (en) * | 2015-08-06 | 2015-11-11 | 三峡大学 | Rock expansion testing apparatus with soaking-air drying circulation effect considered |
| CN105424527A (en) * | 2016-01-01 | 2016-03-23 | 三峡大学 | Tester simulating soaking-air drying rock cyclic action of hydro-fluctuation belt of reservoir bank slope |
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| CN113466435A (en) * | 2021-07-29 | 2021-10-01 | 长安大学 | Rock-soil disintegration test device and test method |
| CN216284777U (en) * | 2021-09-29 | 2022-04-12 | 西南交通大学 | Test device capable of measuring soil moisture and rock collapse resistance |
| CN217655115U (en) * | 2022-01-17 | 2022-10-25 | 高庆泽 | Civil engineering geotechnical disintegration test device |
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| CB03 | Change of inventor or designer information |
Inventor after: Kang Xiaosen Inventor after: Huang Qiangbing Inventor after: Gou Yuxuan Inventor after: Yu Daijin Inventor after: Zhou Jizhe Inventor after: Chen Chuoyu Inventor after: Wei Kaiwen Inventor after: Xing Sunsheng Inventor before: Kang Xiaosen Inventor before: Huang Qiangbing Inventor before: Gou Yuxuan Inventor before: Yu Daijin Inventor before: Zhou Jizhe Inventor before: Chen Chuoyu Inventor before: Wei Kaiwen Inventor before: Xing Sunsheng |