CN114166725B - Device and method for testing high water pressure permeability of fractured rock mass - Google Patents
Device and method for testing high water pressure permeability of fractured rock mass Download PDFInfo
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- CN114166725B CN114166725B CN202210031736.XA CN202210031736A CN114166725B CN 114166725 B CN114166725 B CN 114166725B CN 202210031736 A CN202210031736 A CN 202210031736A CN 114166725 B CN114166725 B CN 114166725B
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- 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
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
Abstract
The invention provides a device and a method for testing high water pressure permeability of a fractured rock mass, which solve the problems that the pressure of water pressure and the temperature of the environment cannot be correspondingly changed according to different construction environments in the existing process of testing the permeability of the fractured rock mass, and water leakage occurs in the process of testing the permeability so that the stability of the device is influenced by the flow of water around; the device comprises a base, wherein a water filling ring sleeve is fixedly connected to the base, fractured rock mass test blocks are connected to the inside of the water filling ring sleeve in a front-back sliding manner, a pressure sensor is fixedly connected to the inside of the water filling ring sleeve, a water supply pipe is fixedly communicated with the upper end of the water filling ring sleeve, the water supply pipe is connected with a water supply device fixedly connected to the inside of the base, an inflation pressure bin is formed on the inner wall of the water filling ring sleeve for an air bag structure, a support frame is fixedly connected to the middle position of the base, a rotating shaft rod is rotatably connected to the support frame, and inner wall wipers are fixedly connected to the front end and the back end of the rotating shaft rod; the invention has the advantages of exquisite structure and strong practicability.
Description
Technical Field
The invention relates to the technical field of fractured rock mass performance testing equipment, in particular to a device and a method for testing high water pressure permeability of fractured rock mass.
Background
The permeability coefficient of the rock mass is an important parameter for reflecting the permeability of the fractured rock mass, and the change of the permeability of the rock mass is closely related to the damage condition of the rock mass. Therefore, the research on the relationship between the permeability coefficient of the rock mass and the size of the fracture, the water injection amount and the water injection pressure is of great significance. Especially in the process of tunnel construction and maintenance, the method is particularly important for researching the permeability of some fractured rocks, the safety of the tunnel in the operation process is ensured, and meanwhile, the occurrence of major accidents is avoided.
However, the permeability test process of the fractured rock mass in the tunnel construction process at present has the following problems:
1. in the process of permeability test of a fractured rock mass, stable high-water-pressure permeability simulation cannot be provided and experimental test environments with different geological characteristics cannot be simulated only by spraying water to the surface of the tested rock mass;
2. during the permeability test, the temperature of the environment cannot be changed, and the permeability cannot be counted according to the volume of the permeable water during the permeability test;
3. the liquid that can not in time collect the processing to the infiltration, avoided the infiltration water to drip everywhere, influenced holistic operation stability, simultaneously in the testing process, the problem can appear leaking in the water, can not in time handle the water of revealing.
Therefore, the invention provides a testing device for high hydraulic pressure permeability of fractured rock mass to solve the problem.
Disclosure of Invention
Aiming at the situation and overcoming the defects of the prior art, the invention provides a device and a method for testing the high water pressure permeability of a fractured rock mass, which effectively solve the problems that the pressure of the water pressure and the temperature of the environment cannot be correspondingly changed according to the difference of construction environments in the process of testing the permeability of the fractured rock mass, and the stability of the device is influenced by the water leakage in the process of testing the permeability and the water flowing around.
The device comprises a base, wherein a water filling ring sleeve is fixedly connected to the base, a fractured rock mass test block is connected to the inside of the water filling ring sleeve in a front-back sliding manner, and a limiting wedge-shaped plate attached to the inner wall of the fractured rock mass test block is fixedly connected to the base;
the inner part of the water-filling ring sleeve is fixedly connected with a pressure sensor, the upper end of the water-filling ring sleeve is fixedly communicated with a water supply pipe, the water supply pipe is connected with a water supply device fixedly connected in the base, the inner wall of the water-filling ring sleeve is of an air bag structure to form an air-filling pressure cabin, and the air-filling pressure cabin is connected with an external air supply pump;
the base intermediate position fixedly connected with support frame, the support frame internal rotation be connected with the rotation axostylus axostyle, the rotation axostylus axostyle around both ends fixedly connected with inner wall wiper, the coaxial fixedly connected with drive gear of rotation axostylus axostyle, drive gear and horizontal sliding connection be in the base on drive rack mesh mutually, drive rack with rotate and connect the reciprocating screw threaded connection on the base, reciprocating screw and fixed connection be in the base on driving motor link to each other.
Preferably, the inner wall wiper comprises a first-stage telescopic rod cylinder fixedly connected to two ends of the rotating shaft rod, a second-stage telescopic rod is connected in each first-stage telescopic rod in a sliding manner, telescopic springs are fixedly connected to one ends, close to the first-stage telescopic rods, of the second-stage telescopic rods, the other ends of the telescopic springs are fixedly connected with the first-stage telescopic rods, a rotating truss is fixedly connected between the two second-stage telescopic rods, and one end, close to the fractured rock mass test block, of the rotating truss is in an arc surface shape;
the base is provided with two liquid storage tanks, the liquid storage tanks are located between the two limiting wedge-shaped plates, and the two liquid storage tanks are respectively attached to the two limiting wedge-shaped plates.
Preferably, one side of the rotating truss, which is close to the fractured rock mass test block, is fixedly connected with a wiping sponge strip.
Preferably, the front end and the rear end of the water-filled ring sleeve, which are close to one side of the fractured rock mass test block, are fixedly connected with elastic sealing strips matched with the fractured rock mass test block.
Preferably, the fractured rock mass test block is provided with a water-absorbing sponge fixedly connected with the water-filled ring sleeve.
Preferably, the front end and the rear end of the base are both connected with a sliding door frame in a front-back sliding manner, the left side and the right side of the lower end of the water filling ring sleeve are both connected with double-head screws in a rotating manner, the front end and the rear end of each double-head screw are both connected with the sliding door frame in a threaded manner, one double-head screw is connected with a rotating motor fixedly connected to the base, and the two double-head screws are connected through a chain transmission mechanism;
the sliding door frame is internally and fixedly connected with an arc-shaped fixing frame, the arc-shaped fixing frame is rotatably connected with an arc-shaped water squeezing ring matched with the outer wall of the fractured rock mass test block, and the water absorbing sponge is in a wedge shape.
Preferably, a vertical graduated scale is arranged in the liquid storage tank;
the liquid storage tank is connected with a water supply bin fixedly connected in the base through an electromagnetic valve, and the upper end of the base is communicated with the water supply bin.
Preferably, the base on fixedly connected with cover that keeps warm, cover that keeps warm in fixedly connected with temperature sensor, temperature sensor and fixed connection be in cover that keeps warm in the heater link to each other, the cover that keeps warm be double-deck insulation construction, cover that keeps warm front end rotate and be connected with the switch door.
A use method of a device for testing high water pressure permeability of a fractured rock mass comprises the following steps:
the method comprises the following steps: firstly, opening the switch door, pushing the fractured rock mass test block into the water-filled ring sleeve, and tightly attaching the water-filled ring sleeve and the fractured rock mass test block through the elastic sealing strip;
step two: the water filling ring sleeve is supplied with water through a water supply device, the air supply pump is started to fill air into the water filling ring sleeve, and the water supply device and the air supply pump are controlled through the pressure sensor;
step four: starting the rotating motor in the water permeability test process, wherein the driving motor drives the inner wall wiper to rotate through the driving rack, the driving gear and the rotating shaft lever, so as to wipe the seepage water on the inner wall of the fractured rock mass test block and accumulate the seepage water in the liquid storage tank;
step five: adjusting the experiment temperature of the fractured rock mass test block by starting the temperature sensor and the heater in the process of the water permeability test;
step six: the rotating motor is started, the rotating motor rotates to drive the two arc-shaped fixing frames to slide in opposite directions through the double-head screw rod and the sliding door sub-frame, and the two arc-shaped fixing frames drive the two arc-shaped water squeezing rings to squeeze water of the water absorbing sponge strips.
The invention is improved aiming at the existing testing device for permeability of fractured rock mass, and effectively solves the problem of real-time adjustment of the pressure state of water pressure by additionally arranging a water-filled ring sleeve, a limiting wedge plate, a pressure sensor, a water supply device and an air supply pump; the problems of collecting the permeated water body and counting the permeation performance are effectively solved by arranging the inner wall wiper, the water outlet groove and the vertical graduated scale; the problems of water leakage and timely collection and treatment of the leaked water in the permeability test process are effectively solved by arranging the scattered elastic sealing strips, the water absorption sponge, the sliding door sub-frame, the arc-shaped fixing frame and the arc-shaped water squeezing ring; the problem of monitoring and changing the test temperature environment is effectively solved by arranging the heat-insulating cover, the heater and the temperature sensor; and the structure is simple and stable, and the universality is extremely high.
Drawings
Fig. 1 is a perspective view of the present invention.
FIG. 2 is a schematic cross-sectional view of the present invention.
FIG. 3 is a partial view of the inner wall wiper and its attachment member in accordance with the present invention.
Fig. 4 is a perspective view of the sliding door frame of the present invention.
FIG. 5 is a schematic cross-sectional view of a sliding door subrack according to the present invention.
FIG. 6 is a partial schematic view of the wringing structure of the water-absorbing sponge of the present invention.
FIG. 7 is a schematic view of the connection of the base and the water-filled ring of the present invention.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1 to 7. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The first embodiment of the invention relates to a high water pressure permeability testing device for fractured rock masses, which comprises a base 1, wherein the base 1 provides a fixed supporting foundation for a subsequent structure, meanwhile, the base 1 is arranged on the ground, the water-filled ring sleeve 2 is fixedly connected on the base 1, the water-filled ring sleeve 2 is in the shape of an arc tunnel, a fractured rock mass test block 3 is connected in the water-filled ring sleeve 2 in a sliding manner from front to back, the base 1 is fixedly connected with a limiting wedge-shaped plate 4 which is jointed with the inner wall of the fractured rock mass test block 3, the fractured rock mass test block 3 is limited by the limiting wedge-shaped plate 4, so that the fractured rock mass test block 3 can be tightly attached to the inner wall of the water-filled ring sleeve 2, meanwhile, the sliding of the fractured rock mass test block 3 is guided, and the problem of large-scale leakage of the water body in the inflatable ring sleeve is avoided;
the water-filled ring sleeve 2 is internally and fixedly connected with a pressure sensor, the pressure sensor is used for testing the water pressure of the water body in the water-filled ring sleeve 2, the upper end of the water-filled ring sleeve 2 is fixedly communicated with a water supply pipe 5, the water supply pipe 5 is connected with a water supply device fixedly connected in the base 1, water is supplied into the water-filled ring sleeve 2 through the water supply device and the water supply pipe 5 to ensure that the water-filled ring sleeve 2 is always in a full state, the inner wall of the water-filled ring sleeve 2 is of an air bag structure to form an air-filled pressure cabin 6, the air-filled pressure cabin 6 is connected with an external air supply pump, the air supply pump is used for supplying air to the air-filled pressure cabin 6, so that the extrusion of the water body in the water-filled ring sleeve 2 is realized, the pressure of the water body is changed, and a high water pressure state is created, meanwhile, the pressure sensor is connected with the air supply pump, and the opening and closing of the air supply pump are controlled by the pressure sensor, so that the water pressure in the water filling ring sleeve 2 is ensured to be in a stable state;
the middle position of the base 1 is fixedly connected with a support frame 7, the support frame 7 provides a fixed support foundation for a subsequent structure, the support frame 7 is connected with a rotating shaft rod 8 in a rotating way, the front end and the rear end of the rotating shaft rod 8 are fixedly connected with inner wall wipers, the embodiment provides a specific inner wall wiper, the inner wall wiper comprises a rotating frame fixedly connected with the rotating shaft rod 8, the rotating frame is contacted with the inner wall of the fractured rock mass test block 3, the rotating shaft rod 8 is coaxially and fixedly connected with a driving gear 9, the driving gear 9 is meshed with a driving rack 10 which is connected to the base 1 in a left-right sliding way, the driving rack 10 is in threaded connection with a reciprocating lead screw 11 which is connected to the base 1 in a rotating way, the reciprocating lead screw 11 is connected with a driving motor 12 which is fixedly connected to the base 1, the driving motor 12 rotates to drive the reciprocating screw rod 11 to rotate, the reciprocating screw rod 11 rotates to drive the driving rack 10 to slide in a reciprocating manner, the driving rack 10 slides in a reciprocating manner to drive the driving gear 9 to rotate in a reciprocating manner, the driving gear 9 drives the rotating shaft rod 8 to rotate synchronously, the rotating shaft rod 8 rotates to drive the inner wall wiper to synchronously rotate in a reciprocating manner along the inner wall of the fractured rock mass test block 3, so that the inner wall of the fractured rock mass test block 3 is wiped, the permeated water body is cleaned and collected in time, the permeated water body is convenient to collect in time, and the permeability of the fractured rock mass test block 3 is tested by collecting the amount of the water body;
in the specific implementation of this embodiment, firstly, the fractured rock mass test block 3 is slid into the water-filled ring sleeve 2, so that the inner wall of the water-filled ring sleeve 2 is tightly attached to the outer wall of the fractured rock mass test block 3, then the external water supply device is started to supply water into the water-filled ring sleeve 2 through the water supply pipe 5, so as to ensure that the water in the water-filled ring sleeve 2 is in an inflated state, then the pressure sensor is started to test the pressure in the water-filled ring sleeve 2, the air supply pump is inflated through the pressure sensor to pressurize the water in the air-filled ring sleeve, so as to ensure that the fractured rock mass test block 3 is in a high water pressure state, then the water permeates the fractured rock mass test block 3, and at the same time, the driving motor 12 is started to rotate to drive the reciprocating screw 11 to rotate, the reciprocating screw rod 11 rotates to drive the driving rack 10 to slide in a reciprocating mode, the driving rack 10 slides in a reciprocating mode to drive the driving gear 9 to rotate in a reciprocating mode, the driving gear 9 drives the rotating shaft rod 8 to rotate synchronously, the rotating shaft rod 8 rotates to drive the inner wall wiper to synchronously rotate in a reciprocating mode along the inner wall of the fractured rock mass test block 3, the inner wall of the fractured rock mass test block 3 is wiped, permeated water is cleaned and collected in time, the permeated water is collected in time conveniently, and the permeability of the fractured rock mass test block 3 is tested by collecting the amount of the water.
In the second embodiment, on the basis of the first embodiment, since the inner wall of the fractured rock mass test block 3 is uneven, and in order to achieve the purpose of scraping and delivering the water body to the upper end of the base 1, the inner wall wiper of the fractured rock mass test block 3 which avoids being stuck and is suitable for size deviation is provided in the present embodiment, specifically, the inner wall wiper includes a primary telescopic rod 13 tube fixedly connected to both ends of the rotating shaft 8, a secondary telescopic rod 14 is slidably connected in the primary telescopic rod 13, a telescopic spring 15 is fixedly connected to one end of the secondary telescopic rod 14 close to the primary telescopic rod 13, the other end of the telescopic spring 15 is fixedly connected to the primary telescopic rod 13, and under the action of the telescopic spring 15, the secondary telescopic rod 14 slides in the primary telescopic rod 13, the adjustment of the telescopic length of the inner wall wiper is realized, the close fitting between the inner wall wiper and the inner wall of the fractured rock mass test block 3 is ensured, the wiping effect is ensured, a rotating truss 16 is fixedly connected between the two second-stage telescopic rods 14, one end, close to the fractured rock mass test block 3, of the rotating truss 16 is in an arc surface shape, and the cleaning of the inner wall of the fractured rock mass test block 3 is realized through the contact between the rotating truss 16 and the fractured rock mass test block 3;
the base 1 is provided with two liquid storage tanks 17, the liquid storage tanks 17 are located between the two limiting wedge-shaped plates 4, the two liquid storage tanks 17 are respectively attached to the two limiting wedge-shaped plates 4, the water on the inner wall of the fractured rock mass test block 3 is collected through the liquid storage tanks 17, the water on the inner wall of the fractured rock mass test block 3 is collected in the liquid storage tanks 17 through the rotating truss 16, meanwhile, the penetrated water is collected through the liquid storage tanks 17, the volume of the penetrated water is observed, and then the permeability of the fractured rock mass test block 3 is tested.
In the third embodiment, on the basis of the second embodiment, in the water infiltration process, in the rotating and water wiping process of the rotating truss 16, water can be smeared on the inner wall of the fractured rock mass test block 3, so that the accuracy of water collection is reduced, so that the present embodiment provides a structure for pre-smearing the inner wall of the fractured rock mass test block 3 with water and ensuring that the water can be accurately collected, so that the present embodiment provides a structure for pre-smearing the inner wall of the fractured rock mass test block 3 with a water pre-coating film and preventing the infiltrated water from completely entering the reservoir 17, specifically, a wiping sponge strip 18 is fixedly connected to one side of the rotating truss 16 close to the fractured rock mass test block 3, the wiping sponge strip 18 is pre-soaked with the water, so that the sponge wiping can not absorb the infiltrated water in the water wiping process, the permeable water body can completely enter the liquid storage tank 17, and the observation and the comparison of the permeability of the fractured rock mass test block 3 are realized through the change of the volume of the water body in the liquid storage tank 17.
In a fourth embodiment, based on the first embodiment, in the process of filling water into the water filling ring sleeve 2, the problem of water leakage occurs at the contact position between the water filling ring sleeve 2 and the fractured rock mass test block 3, and the water leakage is severe due to the unevenness of the surface of the fractured rock mass test block 3, so that the embodiment provides a structure for enhancing the sealing property, specifically, the elastic sealing strip 19 matched with the fractured rock mass test block 3 is fixedly connected to one side of the front end and the rear end of the water filling ring sleeve 2, which is close to the fractured rock mass test block 3, and the water filling ring sleeve 2 and the fractured rock mass test block 3 are tightly attached to each other by squeezing the elastic sealing strip 19, thereby avoiding the problem of a large amount of water leakage occurring in the process of filling water into the water filling ring sleeve 2.
In the fifth embodiment, on the basis of the fourth embodiment, when the water body permeates through the elastic sealing strip 19 to the outside, the water body flows around, so that the stability of the device is reduced, and the flowing water body cannot be collected, so that the structure for adsorbing liquid is provided in the present embodiment, specifically, the fractured rock mass test block 3 is provided with the water absorption sponge 20 fixedly connected with the water filling ring sleeve 2, and the permeated water body is adsorbed by the water absorption sponge 20, so that the water body is prevented from flowing around.
Sixth embodiment, on the basis of the fifth embodiment, the water absorption capacity of the water absorption sponge 20 is limited, and when the process of pressurizing the inside of the water-filled ring sleeve 2 is performed, the water absorption capacity of the water absorption sponge 20 cannot meet the requirement, so the present embodiment provides a structure for extruding water out of the water absorption sponge 20, specifically, the front end and the rear end of the base 1 are respectively connected with a sliding door frame 21 in a front-back sliding manner, the sliding door frame 21 is arranged outside the fractured rock mass test block 3, the left side and the right side of the lower end of the water-filled ring sleeve 2 are respectively connected with a double-lead screw 22 in a rotating manner, the front end and the rear end of the double-lead screw 22 are respectively connected with the sliding door frame 21 in a threaded manner, one of the double-lead screws 22 is connected with a rotating motor 23 fixedly connected to the base 1, the two double-lead screws 22 are connected through a chain transmission mechanism, so that the two double-lead screws 22 rotate synchronously, the two double-threaded lead screws 22 synchronously rotate to drive the two sliding door sub-frames 21 to slide in opposite directions, and the two ends of the double-threaded lead screws 22 are both provided with reciprocating threads, so that the sliding door sub-frames 21 slide in a reciprocating manner under the action of the rotation of the double-threaded lead screws 22;
the sliding door sub-frame 21 is internally and fixedly connected with an arc-shaped fixing frame 24, the sliding door sub-frame 21 drives the arc-shaped fixing frame 24 to synchronously slide in the sliding process, the arc-shaped fixing frame 24 is connected with an arc-shaped water squeezing ring 25 matched with the outer wall of the fractured rock mass test block 3 in a rotating mode, the water absorbing sponge 20 is in a wedge shape, the sliding door sub-frame 21 drives the arc-shaped fixing frame 24 to synchronously slide in the reciprocating sliding process, and then the arc-shaped water squeezing ring 25 is driven to squeeze the water absorbing sponge 20, so that water in the water absorbing sponge 20 is squeezed out and flows to the upper end of the base 1, and meanwhile, a water collecting groove is formed in the upper end of the base 1 to collect the reserved water body.
A seventh embodiment, on the basis of the second embodiment, in order to facilitate observation of the volume of the permeated water body, a vertical scale is arranged in the liquid storage tank 17, and the increment of the volume of the liquid in the liquid storage tank 17 is counted through the vertical scale;
the reservoir 17 is connected with a water supply bin 26 fixedly connected in the base 1 through an electromagnetic valve, the upper end of the base 1 is communicated with the water supply bin 26, the water in the reservoir 17 is recycled and collected through opening and closing of the electromagnetic valve, and meanwhile, the water falling into the upper end of the base 1 is recycled through the water supply bin 26.
Eighth embodiment, on the basis of the second embodiment, because the characteristics of the rock mass are different, the permeability of the fractured rock mass test block 3 under different temperature conditions is also different, so this embodiment provides a structure for controlling the temperature of the test environment, specifically, the base 1 is fixedly connected with a heat-insulating cover 27, the heat-insulating cover 27 is fixedly connected with a temperature sensor, the temperature sensor detects the temperature in the heat-insulating cover 27, the temperature sensor is connected with a heater 28 fixedly connected in the heat-insulating cover 27, the temperature sensor controls the on/off of the heater 28, so as to ensure that the temperature in the heat-insulating cover 27 is in a constant state, the heat-insulating cover 27 is a double-layer heat-insulating structure, and the front end of the heat-insulating cover 27 is rotatably connected with a switch door 29.
When the invention is used specifically, the step one is as follows: firstly, opening the switch door 29, pushing the fractured rock mass test block 3 into the water-filled ring sleeve 2, and tightly attaching the water-filled ring sleeve 2 and the fractured rock mass test block 3 through the elastic sealing strip 19;
step two: the water filling ring sleeve 2 is supplied with water through a water supply device, the air supply pump is started to fill the water filling ring sleeve 2, and the water supply device and the air supply pump are controlled through the pressure sensor;
step four: starting the rotating motor 23 in the water permeability test process, wherein the driving motor 12 drives the inner wall wiper to rotate through the driving rack 10, the driving gear 9 and the rotating shaft lever 8, so as to wipe the water seepage on the inner wall of the fractured rock mass test block 3 and accumulate the water seepage in the liquid storage tank 17;
step five: adjusting the experiment temperature of the fractured rock mass test block 3 by starting the temperature sensor and the heater 28 in the process of the water permeability test;
step six: start rotating electrical machines 23, rotating electrical machines 23 rotate and pass through double-end lead screw 22, sliding door sub-frame 21 drive two arc mount 24 slide in opposite directions, two arc mount 24 drive two arc crowded water ring 25 crowded water treatment is carried out to 20 sponges that absorb water.
The invention is improved aiming at the existing testing device for permeability of fractured rock mass, and effectively solves the problem of real-time adjustment of the pressure state of water pressure by additionally arranging a water-filled ring sleeve, a limiting wedge plate, a pressure sensor, a water supply device and an air supply pump; the problems of collecting the permeated water body and counting the permeability are effectively solved by arranging the inner wall wiper, the water outlet groove and the vertical graduated scale; the problems of water leakage and timely collection and treatment of the leaked water in the permeability test process are effectively solved by arranging the scattered elastic sealing strips, the water absorption sponge, the sliding door sub-frame, the arc-shaped fixing frame and the arc-shaped water squeezing ring; the problem of monitoring and changing the test temperature environment is effectively solved by arranging the heat-insulating cover, the heater and the temperature sensor; and the structure is simple and stable, and the universality is extremely high.
Claims (8)
1. A testing device for high water pressure permeability characteristics of fractured rocks comprises a base (1), and is characterized in that a water filling ring sleeve (2) is fixedly connected to the base (1), fractured rock mass test blocks (3) are connected to the inside of the water filling ring sleeve (2) in a front-back sliding manner, and limiting wedge plates (4) which are attached to the inner walls of the fractured rock mass test blocks (3) are fixedly connected to the base (1);
the inner part of the water filling ring sleeve (2) is fixedly connected with a pressure sensor, the upper end of the water filling ring sleeve (2) is fixedly communicated with a water supply pipe (5), the water supply pipe (5) is connected with a water supply device fixedly connected in the base (1), the inner wall of the water filling ring sleeve (2) is of an airbag structure to form an inflation pressure bin (6), and the inflation pressure bin (6) is connected with an external air supply pump;
the automatic cleaning device is characterized in that a support frame (7) is fixedly connected to the middle of the base (1), a rotating shaft rod (8) is connected to the support frame (7) in a rotating mode, inner wall wipers are fixedly connected to the front end and the rear end of the rotating shaft rod (8), a driving gear (9) is coaxially and fixedly connected to the rotating shaft rod (8), the driving gear (9) is meshed with a driving rack (10) which is connected to the base (1) in a left-right sliding mode, the driving rack (10) is in threaded connection with a reciprocating lead screw (11) which is rotatably connected to the base (1), and the reciprocating lead screw (11) is connected with a driving motor (12) which is fixedly connected to the base (1);
the inner wall wiper comprises a first-stage telescopic rod (13) barrel fixedly connected with two ends of the rotating shaft rod (8), two-stage telescopic rods (14) are respectively connected in the first-stage telescopic rods (13) in a sliding manner, one ends, close to the first-stage telescopic rods (13), of the second-stage telescopic rods (14) are respectively and fixedly connected with a telescopic spring (15), the other ends of the telescopic springs (15) are respectively and fixedly connected with the first-stage telescopic rods (13), a rotating truss (16) is fixedly connected between the two second-stage telescopic rods (14), and one ends, close to the fractured rock mass test block (3), of the rotating trusses (16) are arc-surface-shaped;
the base (1) on seted up two reservoir (17), reservoir (17) all be located two spacing wedge plate (4) between, two reservoir (17) respectively with two spacing wedge plate (4) laminate mutually.
2. The device for testing the high water pressure permeability characteristic of the fractured rock mass according to claim 1, wherein a wiping sponge strip (18) is fixedly connected to one side of the rotating truss (16) close to the fractured rock mass test block (3).
3. The device for testing the high water pressure permeability of the fractured rock mass according to claim 2, wherein the front end and the rear end of the water-filled ring sleeve (2) close to one side of the fractured rock mass test block (3) are fixedly connected with elastic sealing strips (19) matched with the fractured rock mass test block (3).
4. The device for testing the high water pressure permeability of the fractured rock mass according to claim 3, wherein the fractured rock mass test block (3) is provided with a water absorption sponge (20) fixedly connected with the water filling ring sleeve (2).
5. The device for testing the high water pressure permeability of the fractured rock mass according to claim 4, wherein the front end and the rear end of the base (1) are respectively connected with a sliding door frame (21) in a front-back sliding manner, the left side and the right side of the lower end of the water filling ring sleeve (2) are respectively connected with a double-threaded lead screw (22) in a rotating manner, the front end and the rear end of each double-threaded lead screw (22) are respectively connected with the sliding door frame (21) in a threaded manner, one of the double-threaded lead screws (22) is connected with a rotating motor (23) fixedly connected to the base (1), and the two double-threaded lead screws (22) are connected through a chain transmission mechanism;
the sliding door is characterized in that an arc-shaped fixing frame (24) is fixedly connected in the sliding door frame (21), an arc-shaped water squeezing ring (25) matched with the outer wall of the fractured rock mass test block (3) is rotatably connected to the arc-shaped fixing frame (24), and the water absorbing sponge (20) is in a wedge shape.
6. The device for testing the high water pressure permeability characteristic of the fractured rock mass according to claim 5, wherein a vertical graduated scale is arranged in the liquid storage tank (17);
the liquid storage tank (17) is connected with a water supply bin (26) fixedly connected in the base (1) through an electromagnetic valve, and the upper end of the base (1) is communicated with the water supply bin (26).
7. The fractured rock mass high water pressure permeability characteristic testing device according to claim 6, wherein a heat preservation cover (27) is fixedly connected to the base (1), a temperature sensor is fixedly connected to the inside of the heat preservation cover (27), the temperature sensor is connected to a heater (28) fixedly connected to the inside of the heat preservation cover (27), the heat preservation cover (27) is of a double-layer heat preservation structure, and a switch door (29) is rotatably connected to the front end of the heat preservation cover (27).
8. The use method of the fractured rock mass high water pressure permeability characteristic testing device according to claim 7 is characterized by comprising the following steps:
the method comprises the following steps: firstly, opening the switch door (29), pushing the fractured rock mass test block (3) into the water-filled ring sleeve (2), and tightly attaching the water-filled ring sleeve (2) and the fractured rock mass test block (3) through the elastic sealing strip (19);
step two: the water filling ring sleeve (2) is supplied with water through a water supply device, the air supply pump is started to inflate the water filling ring sleeve (2), and the water supply device and the air supply pump are controlled through the pressure sensor;
step four: the rotating motor (23) is started in the water permeability test process, the driving motor (12) drives the inner wall wiper to rotate through the driving rack (10), the driving gear (9) and the rotating shaft lever (8), the water seepage of the inner wall of the fractured rock mass test block (3) is wiped, and meanwhile, the water is accumulated in the liquid storage tank (17);
step five: adjusting the experiment temperature of the fractured rock mass test block (3) by starting the temperature sensor and the heater (28) in the process of the water permeability test;
step six: start rotating motor (23), rotating motor (23) rotate and pass through double-end lead screw (22), sliding door sub-frame (21) drive two arc mount (24) slide in opposite directions, two arc mount (24) drive two arc crowded water ring (25) carry out crowded water treatment to absorbent sponge (20).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231226B (en) * | 2008-01-29 | 2010-12-15 | 成都理工大学 | Rock high pressure infiltration experiment system |
| CN201188081Y (en) * | 2008-01-29 | 2009-01-28 | 成都理工大学 | Rock high voltage infiltration experiment system |
| CN101358916B (en) * | 2008-09-09 | 2011-05-11 | 同济大学 | Concrete permeameter under loading action |
| CN102252951B (en) * | 2011-07-14 | 2013-03-06 | 中国科学院武汉岩土力学研究所 | High-temperature fractured rock mass permeation test device and method |
| CN203443860U (en) * | 2013-09-17 | 2014-02-19 | 陈万祥 | Analog loading device and testing device for deep rock mass high ground stress |
| CN106198934B (en) * | 2016-09-14 | 2018-01-19 | 山东大学 | The experimental rig and test method of a kind of crack rock landslide chip off-falling and crack gushing water |
| CN206804489U (en) * | 2017-04-13 | 2017-12-26 | 中国电建集团华东勘测设计研究院有限公司 | A kind of seabed Flow In Jointed Rock Masses observation device |
| CN108444889B (en) * | 2018-04-20 | 2020-05-19 | 大连理工大学 | Variable-pressure adjustable rock mass fracture permeability testing device |
| CN208399335U (en) * | 2018-07-12 | 2019-01-18 | 中国电建集团华东勘测设计研究院有限公司 | A kind of crack rock high pressure permeability properties test device |
| CN209148504U (en) * | 2018-11-26 | 2019-07-23 | 陕西汉通建设工程质量检测有限公司 | A kind of concrete penetrometer |
| CN109470619B (en) * | 2018-12-07 | 2021-06-25 | 湖南大学 | Saturated permeability coefficient testing system and method capable of simulating dry-wet circulation effect of rock-soil body |
| CN109946212B (en) * | 2019-04-01 | 2021-08-31 | 东北大学 | Testing device and method for testing seepage characteristics of rough fracture |
| CN110320343A (en) * | 2019-07-08 | 2019-10-11 | 中国石油大学(华东) | A kind of reservoir damage test device taken out convenient for rock core |
| CN111504871A (en) * | 2019-12-11 | 2020-08-07 | 南通市飞宇石油科技开发有限公司 | Rock mass fracture unsaturated seepage test system |
| CN212989118U (en) * | 2020-05-29 | 2021-04-16 | 中南大学 | Air bag confining pressure type seepage device |
| CN111879814B (en) * | 2020-07-31 | 2023-08-22 | 武汉大学 | Fracture rock mass hydrothermal transmission mechanism experimental device and system |
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