CN105424527A - Tester simulating soaking-air drying rock cyclic action of hydro-fluctuation belt of reservoir bank slope - Google Patents
Tester simulating soaking-air drying rock cyclic action of hydro-fluctuation belt of reservoir bank slope Download PDFInfo
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- CN105424527A CN105424527A CN201610000352.6A CN201610000352A CN105424527A CN 105424527 A CN105424527 A CN 105424527A CN 201610000352 A CN201610000352 A CN 201610000352A CN 105424527 A CN105424527 A CN 105424527A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- 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
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
Abstract
A tester simulating the soaking-air drying rock cyclic action of a hydro-fluctuation belt of a reservoir bank slope comprises a test instrument shell. A cover plate is arranged on the upper portion of the shell, a base is arranged on the lower portion of the shell, the cover plate is provided with a sampling port, a deflating bolt and a water inlet pipe, the base is provided with a water outlet pipe and connected with a water tank, a water circulating system is formed by all the components, a metal water permeable plate sample bracket is arranged in the shell, and a pressure air bag is arranged in the shell and connected with a pressure control system. A temperature control heating device is arranged on the base. A dynamic water circulation control device and a static water circulation control device are arranged at the same time, a soaking-air drying circulating device is arranged, and the rise and fall changes of the water level of a reservoir and the dissolving characteristics and the scouring action of rock in a reservoir water pressure state can be simulated. Due to a simulation experiment, a reliable test data basis can be provided for research on protection of a large reservoir bank slope and geological disaster evaluation and prediction.
Description
Technical field
The present invention relates to the water-rock Experiment on Function device in rock mechanics experiment field, can be used to study damage deteriorating effect under immersion-air-dry cycling condition, under different water pressure condition and under condition of different temperatures of reservoir stability falling zone rock mass and degradation mechanism.
Background technology
A large amount of geotechnical engineering problems needs the characteristic understanding water-rock effect.Reservoir stability is due to the change of reservoir level, water-rock effect carries out under immersion-air-dry circulation environment and certain water pressure condition, water rock chemical reaction will by immersion-air-dry circulation, water pressure and Water Temperature, and under water-rock effect, the physico mechanical characteristic deterioration rule of reservoir stability rock mass will directly affect the safety of reservoir stability.At present, different moisture state or short-term, long-term immersion are focused on to the research of water-rock effect, seldom consider to soak-air-dry cyclic process, when also not considering preferably to soak, the change of water pressure, lacks the actual Environmental effect that a kind of instrument better can simulate reservoir stability falling zone rock mass.
Summary of the invention
The object of the invention is to provide a kind of water-rock Experiment on Function instrument can simulating the immersion-air-dry cyclic process of reservoir stability falling zone and water pressure eustasy.
The object of the present invention is achieved like this: a kind of simulation reservoir stability falling zone immersion-air-dry ringing test unit comprises test instrument housing; housing upper is provided with cover plate; bottom is provided with base; metal porous disc sample holder is provided with in housing; by hollow steel pipe with holes by bearing bearing metal porous disc sample holder, cover plate is provided with water inlet pipe, bleeder screw and sample tap; pressure air bag is placed in housing, and pressure air bag is connected with air bag gas admittance valve;
Steel pipe hollow with holes in housing is by hollow bearing support; Hollow bearing inside is hollow, and each hollow interlayer in both sides, and hollow holder top has hole;
There are heating rod and temperature sensor at hollow bearing internal fixtion, and are provided with ventilating opening in hollow bearing lower end and discharge excess water and to hold concurrently water sampling mouth, and fan blower is set at ventilating opening place.
Further, be provided with between cover plate and base by adding the fixing reinforcing rod of fixing bolt, and be provided with packing ring between cover plate and housing, between base and housing.
Further, water circulation control system comprises water inlet pipe, inlet valve, water pump, rising pipe, flowing water Valve and water tank operation valve and water tank, water tank is communicated with housing bottom by rising pipe, rising pipe is provided with outlet valve, water tank is communicated with housing upper by water inlet pipe, water inlet pipe is provided with inlet valve, and water pump is by the water suction water inlet pipe in water tank.
Further, housing is also provided with the trapping cover be enclosed within steel pipe, described trapping overlaps that one end is located in housing, the other end is located at outside housing, and the termination be located at outside housing is provided with cover plate, and the trapping be located in housing puts and is provided with multiple air hole.
Further, temperature sensor and power sources in series, and control heating rod work by temperature detect switch (TDS).
Further, pressure air bag is hollow annular structure.
Further, be provided with air release between gas bomb and tensimeter, air pressure regulator is connected with tensimeter, and air pressure regulator is connected with air bag gas admittance valve by connecting pipe, thus common decomposition pressure control system.
Further, sample holder is made up of two pieces of half-round metal porous discs that can freely rotate by the discrepancy in elevation, and is respectively equipped with spacing column and hole at the intersection of two pieces of half-round metal porous discs.
All right, outer surface of steel tube and trapping are overlapped between inside surface and are provided with filling material.
All right, filling material is sand, stone or earth.
The invention provides simulation reservoir stability falling zone immersion-air-dry water-rock ringing test instrument, the water pressure of the pressure chamber of this instrument is controlled by external pressure controller, can realize simulation rock and the interaction of water under different water pressure condition; Simultaneously test instrument is provided with dynamic and static water circulation control device, by water tank respectively with the connection of water pump and cover plate and base, the disturbance of simulated reservoir water; Water sampling mouth is set, conveniently can obtains water sample, to carry out aqueous solution analysis; In addition, test instrument is provided with dry, wet circulating control device, the impact of simulated reservoir bank storehouse water rise and fall.
The present invention also has simple, easy to operate, the safe and reliable feature of structure: the dissolution characteristics can simulating rock under storehouse water pressure repeated action and temperature action, for research large reservoir riverside rebuilding mechanism provides test platform; Simultaneously can also the disintegrating procedue of simulation rock under flowing pressure state, coordinate the research of rock mechanics damage test, further clear and definite under dynamic hydraulic condition rock mechanics micromechanism of damage, for bank slopes maintenance and Advance geological prediction and forecast provide reliable test figure.
Mentality of designing of the present invention is as follows: the requirement considering capacity and operability, is one meter in diameter, the right cylinder of high a meter by Instrument Design; Transparent shell facilitates test situation in optical viewer; Top sampling lid avoids the situation dismantling whole cover plate, considers into drainage situation, is provided with vent port, water inlet pipe and rising pipe respectively at cover plate and base; Sample tray is designed to metal porous disc, be beneficial to the contact of sample and water or air, simultaneously every layer of sample tray is designed to the two panels semicircular plate of the discrepancy in elevation, gets lower sample after being convenient to stack, correspondence position is provided with spacing column and hole in addition, is convenient to be fixed prevent slippage from overturning sample; The center pillar of supporting tray is made up of hollow steel pipe with holes, is connected, improves air-dry efficiency with the hollow bearing of the square box of base center; Adopt roller bottom instrument, facilitate carrying and the movement of instrument.
accompanying drawing illustrates:
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the structural representation that the present invention simulates reservoir stability falling zone immersion-air-dry ringing test unit.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is immersion-air-dry circulation and the water temp. heating system schematic that the present invention simulates reservoir stability falling zone immersion-air-dry ringing test unit.
Fig. 4 is the sampling lid detail drawing that the present invention simulates reservoir stability falling zone immersion-air-dry ringing test unit.
Fig. 5 is the metal porous disc style bracket detail drawing that the present invention simulates reservoir stability falling zone immersion-air-dry ringing test unit.
Fig. 6 is the preferred structure schematic diagram that the present invention simulates reservoir stability falling zone immersion-air-dry ringing test unit.
As in figure, housing 1, cover plate 2, base 3, sample tray 4, steel pipe 5, bearing 6, water inlet pipe 7, bleeder screw 8, sample tap 9, pressure air bag 10, air bag gas admittance valve 11, add fixing bolt 12, reinforcing rod 13, packing ring 14, inlet valve 15, water pump 16, rising pipe 17, flowing water Valve 18, hollow bearing 21, heating rod 22, temperature sensor 23, ventilating opening 24, discharge excess water to hold concurrently water sampling mouth 25, fan blower 26, attaching plug 27, temperature detect switch (TDS) 28, air pressure regulator 29, tensimeter 30, air release 31, gas bomb 32, spacing column 33, hole 34, air intake valve 39, bottom valve 40, hand is 41, rock sample 42, trapping cover 43.
embodiment:
A kind of simulation reservoir stability falling zone immersion-air-dry ringing test unit, comprise test instrument body housing, housing upper is provided with cover plate, bottom is provided with base and water tank, metal porous disc sample holder is provided with in housing, cover plate is provided with sampling lid, water inlet pipe and bleeder screw, and pressure air bag is placed in housing, and pressure air bag is connected with control pressurer system by air bag gas admittance valve.Temperature control heating device is arranged on lower housing portion, is connected with ventilating opening and water sampling mouth.Be provided with between cover plate and base by adding the fixing reinforcing rod of fixing bolt.Pressure air bag is hollow annular structure.Control pressurer system comprises gas bomb, is provided with air release between gas bomb and tensimeter, and air pressure regulator is connected with tensimeter, and air pressure regulator is connected with air bag gas admittance valve by connecting pipe.Temperature control heating device is arranged at base center.Based on square supporting, comprise heating rod, temperature sensor, temperature detect switch (TDS), be connected with power supply in outside.
As Fig. 1, 2, in 4, simulation reservoir stability falling zone immersion-air-dry ringing test unit comprises housing 1, housing 1 top is provided with cover plate 2, bottom is provided with base 3, metal porous disc sample holder 4 is provided with in housing 1, base 3 is provided with hollow bearing 21, sample tray 4(is shown in Fig. 5, sample holder 4 is made up of two pieces of half-round metal porous discs that can freely rotate by the discrepancy in elevation, and be respectively equipped with spacing column 33 at the intersection of two pieces of half-round metal porous discs to be connected by bearing 6 with hollow steel pipe 5 with holes with hole 34, cover plate 2 is provided with water inlet pipe 7, bleeder screw 8 and sample tap 9, lower base 3 is provided with rising pipe 17, air bag gas admittance valve 11.Pressure air bag 10 is placed in housing 1, and pressure air bag 10 is connected with control pressurer system by air bag gas admittance valve 11, and eliminating excess water water sampling mouth 25 of holding concurrently communicates with the hollow bearing 21 of the inner square box of housing 1.Ventilating opening 24 and get rid of excess water water sampling mouth 25 of holding concurrently and be connected.As in Fig. 1,3, the steel pipe 5 hollow with holes in housing 1 is supported by hollow bearing 21; Hollow bearing 21 inside is hollow, and each hollow interlayer in both sides, and hollow bearing 21 top has hole;
Heating rod 22 and temperature sensor 23 is had at hollow bearing 21 internal fixtion, and be provided with ventilating opening 24 in hollow bearing 21 lower end and discharge excess water and to hold concurrently water sampling mouth 25, and fan blower 26 is set at ventilating opening 24 place, heating rod 22 and temperature sensor 23 are separately fixed at base 3 square box hollow bearing 21 side-walls, base 3 outside is provided with temperature detect switch (TDS) 28 and heating rod 22, temperature sensor 23 is connected, in immersion-air-dry circulation and water temp. heating system, temperature sensor 23 is connected with heating rod 22, and temperature detect switch (TDS) 28 is set in centre, temperature sensor 23 is directly connected with attaching plug 27, pressure air bag 10 is hollow annular structure.
Preferably, between cover plate 2 and base 3, be provided with the reinforcing rod 13 adding fixing bolt 12 and fix.
Control pressurer system comprises gas bomb 32, is provided with air release 31 between gas bomb 32 and tensimeter 30, and air pressure regulator 29 is connected with tensimeter 30, and air pressure regulator 29 is connected with air bag gas admittance valve 11 by connecting pipe.
In water circulation system, water inlet pipe 7 is connected with water pump 16, and the rising pipe 17 of base 3 bottom is provided with flowing water Valve 18, is provided with water tank operation valve 19 between water pump 16 and water tank, is provided with inlet valve 15 between water pump 16 and water inlet pipe 7.
Preferably, cover plate 2 is provided with hand 41.
as in Fig. 6,housing 1 is also provided with the trapping cover 43 be enclosed within steel pipe 5, trapping overlaps that 43 one end are located in housing, the other end is located at outside housing 1, and the termination be located at outside housing is provided with cover plate, covers cover plate during work, and the trapping be located in housing puts and is provided with multiple air hole.
Preferably, steel pipe 5 outside surface and trapping are overlapped between inside surface and are provided with filling material, if filling material is sand, stone or earth, the gas that can be blown out by steel pipe 5, filling material is blown out trapping cover 43, thus the more real physical environment of simulation, in reality, reservoir not only has washing away of water, also has the mud be mingled with in water, the impact of sand, can by adding sand, stone, the ratio of earth and the speed of blow gas carry out the souring under simulation varying environment, if when filling material is steel disc, the gas in steel pipe 5 can be stoped to be blown in housing 1 by trapping cover 43, by controlling the height that filling material is filled, the air hole ventilation of that position on trapping cover 43.
principle of work is as follows:
First put into by housing 1 by the rock sample 42 made, the water pressure that cover plate 2 and base 3 etc. are formed is indoor, layered putting, or as in Fig. 6, puts into the rock sample 42 of a monoblock within the case 1;
Close air intake valve 39 and bottom valve 40, sealing sample tap 9, open inlet valve 15 and water tank operation valve 19, the water of 20 li, water tank is passed through water pump 16 by water inlet pipe 7 to the indoor water filling of water pressure, between the injection life, bleeder screw 8 is opened, and is discharged by water pressure room air, until after water diffuses out water inlet pipe 7, close water tank operation valve 19, tighten bleed screw 8.In process of the test, water pump 16 continuous firing makes water be in the state of circulating, and simulates rivers bank water flow dynamic by controlling water pump 16 rotating speed.
Pressure air bag 10 is connected with external pressure control system, the gas bomb 32 of control system adopts the gas cylinder being filled with nitrogen, open gas bomb 32 master switch, the tensimeter 30 of source of the gas shows the force value of gas bomb 32, close air bag gas admittance valve 11, open air release 31 to detect and whether have air-flow to discharge, close air release 31 afterwards, slow circumvolve air pressure regulator 29, after the pressure of display on tensimeter 30 reaches the pressure required for test, open air bag gas admittance valve 11 to inflate to pressure air bag 10, now by external pressure system, pressure needed for stable test is transmitted feedwater by the pressure air bag 10 be positioned over bottom water pressure room, form the pressure identical with external pressure system, achieve the simulation of storehouse water pressure.
Be energized by heating rod 22, control heating rod 22 work by temperature sensor 23 and temperature detect switch (TDS) 28, when water temperature reaches predetermined temperature range, now temperature sensor passes on instruction to temperature switch 28, and temperature detect switch (TDS) 28 disconnects, then heating rod 22 quits work; When temperature sensor 28 measures water temperature lower than predetermined temperature range, temperature detect switch (TDS) 28 closes automatically, thus heating rod is started working, and achieves the temperature of soaking aqueous solution and controls, in immersion process, ion component and concentration analysis can be carried out from water sampling mouth 25 water sampling as requested.
After having a pressure immersion terminating, close gas bomb 32 master switch, open pressure-regulating valve 29 and air release 31, the residual gas in pressure release air bag; Close inlet valve 7, open flowing water Valve 18, water pump 16 and water tank operation valve 19, water is pumped into water tank 20, after the water in device drains, open and discharge remaining water water sampling mouth 25 of holding concurrently and discharge water in the hollow bearing of square box; Then close bottom valve 40, open air intake valve 39, adopt heating rod 22 to heat, ventilate in housing with fan blower 24, thus it is air-dry that rock sample is accelerated, simulation falling zone air drying process.
According to the testing program of setting, rock sample can be taken out in immersion end or air-dry ending phase and carry out physical mechanics test, test correlation parameter.
When needing simulation to carry out the test of washing away containing mud, sand, stone, can overlap in 43 in trapping the mud, sand, the stone that add and prepare, and start fan blower 26, close bottom valve 40, be made the mud in trapping cover 43, sand, stone blowout by fan blower 26.
Claims (10)
1. a simulation reservoir stability falling zone immersion-air-dry ringing test unit, comprise test instrument housing (1), it is characterized in that: housing (1) top is provided with cover plate (2), bottom is provided with base (3), metal porous disc sample holder (4) is provided with in housing (1), by hollow steel pipe with holes (5) by bearing (6) bearing metal porous disc sample holder (4), cover plate (2) is provided with water inlet pipe (7), bleeder screw (8) and sample tap (9), pressure air bag (10) is placed in housing (1), pressure air bag (10) is connected with air bag gas admittance valve (11),
Steel pipe hollow with holes (5) in housing (1) is supported by hollow bearing (21); Hollow bearing (21) inside is hollow, and each hollow interlayer in both sides, and hollow bearing (21) top has hole;
Heating rod (22) and temperature sensor (23) is had at hollow bearing (21) internal fixtion, and be provided with ventilating opening (24) in hollow bearing (21) lower end and discharge excess water and to hold concurrently water sampling mouth (25), and fan blower (26) is set at ventilating opening (24) place.
2. simulation reservoir stability falling zone according to claim 1 immersion-air-dry ringing test unit, it is characterized in that: be provided with between cover plate (2) and base (3) by adding the fixing reinforcing rod (13) of fixing bolt (12), and be provided with packing ring (14) between cover plate (2) and housing (1), between base (3) and housing (1).
3. simulation reservoir stability falling zone according to claim 1 immersion-air-dry ringing test unit, it is characterized in that: water circulation control system comprises water inlet pipe (7), inlet valve (15), water pump (16), rising pipe (17), flowing water Valve (18) and water tank operation valve (19) and water tank (20), water tank is communicated with housing bottom by rising pipe, rising pipe is provided with outlet valve, water tank is communicated with housing upper by water inlet pipe, water inlet pipe is provided with inlet valve, and water pump is by the water suction water inlet pipe in water tank.
4. simulation reservoir stability falling zone according to claim 1 immersion-air-dry ringing test unit, it is characterized in that: described housing (1) is also provided with the trapping cover (43) be enclosed within steel pipe (5), described trapping cover (43) one end is located in housing, the other end is located at housing (1) outward, the termination be located at outside housing is provided with cover plate, and the trapping be located in housing puts and is provided with multiple air hole.
5. simulation reservoir stability falling zone according to claim 1 immersion-air-dry ringing test unit, is characterized in that: temperature sensor (23) is connected with attaching plug (27), and controls heating rod (22) work by temperature detect switch (TDS) (28).
6. simulation reservoir stability falling zone according to claim 1 immersion-air-dry ringing test unit, is characterized in that: pressure air bag (10) is hollow annular structure.
7. simulation reservoir stability falling zone according to claim 1 immersion-air-dry ringing test unit, it is characterized in that: between gas bomb (32) and tensimeter (30), be provided with air release (31), air pressure regulator (29) is connected with tensimeter (30), and air pressure regulator (29) is connected with air bag gas admittance valve (11) by connecting pipe.
8. simulation reservoir stability falling zone according to claim 1 immersion-air-dry ringing test unit, it is characterized in that: sample holder (4) is made up of two pieces of half-round metal porous discs that can freely rotate by the discrepancy in elevation, and is respectively equipped with spacing column (33) and hole (34) at the intersection of two pieces of half-round metal porous discs.
9. simulation reservoir stability falling zone according to claim 4 immersion-air-dry ringing test unit, is characterized in that: described steel pipe (5) outside surface and trapping are overlapped between inside surface and be provided with filling material.
10. simulation reservoir stability falling zone according to claim 9 immersion-air-dry ringing test unit, is characterized in that: described filling material is sand, stone or earth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610000352.6A CN105424527B (en) | 2016-01-01 | 2016-01-01 | The falling zone immersion of one kind simulation reservoir stability air-dries rock ringing test instrument |
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| CN201610000352.6A CN105424527B (en) | 2016-01-01 | 2016-01-01 | The falling zone immersion of one kind simulation reservoir stability air-dries rock ringing test instrument |
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| CN105424527B CN105424527B (en) | 2018-01-12 |
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