CN107192653B - The test device and test method of underground water seal cave depot rock mass water sealing condition - Google Patents
The test device and test method of underground water seal cave depot rock mass water sealing condition Download PDFInfo
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- CN107192653B CN107192653B CN201710539307.2A CN201710539307A CN107192653B CN 107192653 B CN107192653 B CN 107192653B CN 201710539307 A CN201710539307 A CN 201710539307A CN 107192653 B CN107192653 B CN 107192653B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 203
- 239000011435 rock Substances 0.000 title claims abstract description 81
- 238000012360 testing method Methods 0.000 title claims abstract description 60
- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 230000000007 visual effect Effects 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 230000005520 electrodynamics Effects 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 238000010008 shearing Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000005304 joining Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000011017 operating method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 72
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
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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
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Abstract
The present invention relates to the test devices and test method of a kind of underground water seal cave depot rock mass water sealing condition, the wherein test device of underground water seal cave depot rock mass water sealing condition, it is characterized by comprising rack and it is set on the rack rock core fastener, the rock core fastener top is connected with water tank by upper plug head, the rock core fastener lower part is connected with gas tank by lower end cap, the water tank is equipped with water filling port and upper discharge outlet, the electrodynamic pump that the water filling port connection is supplied water, the upper discharge outlet connection counterbalance valve is to control, stablize hydraulic pressure in case, visual window is additionally provided on the water tank；The gas tank is set there are four connector, and two of them connector is connected in liquidometer, water level in gas tank when measuring test；Apparatus of the present invention can be used for testing the water sealing condition of underground water seal cave depot rock mass, the advantage is that: can be when testing rock mass water sealing condition, while guaranteeing that gas-liquid normally inputs, outside is in sealing state in experimental rig.
Description
Technical field:
The invention mainly relates to the parameter testing field of Geological Engineering, Oil-Gas Storage and Transportation Engineering, geotechnical engineering, more particularly, to
A kind of test device and test method of underground water seal cave depot rock mass water sealing condition.
Background technique:
Underground water seal cave depot is that cavern is excavated under steadily water level line, and artificial water is then arranged in cavern's surrounding rock body
Curtain, so that generating specific groundwater pressure and hydraulic gradient in surrounding rock of chamber crack, prevents petroleum and liquefied petroleum gas from passing through
Rock cranny leakage, to achieve the purpose that sealed storage.
Improved year by year, under the background of western countries' oil conservation system gradual perfection in dependence on foreign countries for oil, China in
Start within 2003 to establish national strategy oil reserve base, tentatively point three phases carry out.In view of International Underground Storage Facility it is safe and environment-friendly,
Save money the advantage with Economization on land etc., the second stage of Huang Island, Zhanjiang, Huizhou and 4, Jinzhou, the Danzhous of three phases, Jieyang,
Anqing, Chuxiong and Jagdaqi 5 are all made of underground water seal cave depot form.Meanwhile storing the underground water seal hole of liquefied petroleum gas
Library is also built in China many places, built and mainly have many places such as Shantou, Ningbo, Zhuhai, Huang Island Long Ze and Yantai Wanhua what is built
Place.The oil and gas reserve construction plan of the Chinese government and enterprise is made a general survey of it is found that underground water seal cave depot has become oil gas energy storage
One of principal mode.
The core technology of underground water seal cave depot is underground water sealing technique (water seal technology).Currently, China is to water seal technology
Still grasp crucial construction technique (water curtain system design and the efficiency test, the examination of cave depot airtightness for not enough leading to underground water seal cave depot
Test and criterion, the control of construction time level of ground water and operation phase country rock long-time stability etc.) it still mostlys come from France, Sweden etc. and consults
Inquiry company.Cave depot engineering construction is usually under one's control.
Summary of the invention:
The purpose of the present invention is to provide the test device and test method of a kind of underground water seal cave depot rock mass water sealing condition,
The test device of the underground water seal cave depot rock mass water sealing condition is conducive to disclose the water sealing condition of underground water seal cave depot rock mass.
The test device of underground water seal cave depot rock mass water sealing condition of the present invention, it is characterised in that: including rack and be located at machine
Rock core fastener on frame, the rock core fastener top are connected with water tank by upper plug head, and the rock core fastener lower part is logical
It crosses lower end cap and is connected with gas tank, the water tank is equipped with water filling port and upper discharge outlet, and the water filling port connects the electrodynamic pump to supply water,
The upper discharge outlet connection counterbalance valve is additionally provided with visual window on the water tank to control, stablize hydraulic pressure in case；The gas tank is equipped with
Four connectors, two of them connector are connected in liquidometer, water level in gas tank when measuring test, other two connector
It is respectively connected to lower discharge outlet and gas injection port, gas injection port is sequentially connected gas pressure regulating valve, compressed air source unit, and lower discharge outlet is for being discharged reality
Water extra in the process is tested, pressure rod is also embedded with inside the gas tank, pressure rod connects adding below gas tank by pressurization screw rod
Motor is carried, when implementing shearing force, loading motor drives pressure rod to be located at the intracorporal core sample of rock core fastener
Part is cut to occur at the uniform velocity to be displaced；Water passage, with joining water box and core sample, the lower end cap are equipped in the upper plug head
In be equipped with air-liquid body flow channel.
Further, the size of above-mentioned water tank cavity part is diameter of phi=270mm, height h=80mm, and bottom is left and right
Two sides are separately connected the water filling port and upper discharge outlet；The visual window cylinder is divided into two parts, and a part is top visual window,
Another part is side visual window；During test, determine the gas for flowing through rock sample crack in upper plug head by each visual window
At the time of emerging in channel, to the critical state for judging to keep water seal effect under a certain gas pressure.
Further, Φ=100mm is placed in above-mentioned rock core fastener, the core sample of h=200mm is tried in the core
Setting pressurization bed course around sample, rock core fastener lower section connector is connected with confining pressure hand pump, by shaking hand pump to core
The water filling of clamper internal pressurization bed course applies confining pressure to sample to reach.
Further, above-mentioned upper and lower plug is fixed on the both ends of the surface of clamper with plug flange respectively, is connected with box flange
Water receiving case, gas tank keep the airtightness of experimentation Instrumental to prevent rock mass sample from upper and lower displacement occurs in test.
Further, the arch empty slot that a height is 15mm is set on above-mentioned upper plug head with core sample connecting portion,
To be displaced reserved space to core sample local under shear action.
Further, above-mentioned rack is equipped with display system, power supply, pressurized system, and top is followed successively by for showing
The load speed regulation table of core sample shear velocity, for showing the liquid meter of fluid flow in water tank, for showing gas tank
Gas flow meter, loading power, liquid pumping source and the general supply of interior gas flow；It next is inner-ring gas pressure table, water tank pressure
Power table and gas tank pressure gauge pass through in test the reading of pressure gauge numerical value, can get corresponding water, atmospheric pressure, to measure
Water sealing condition；It is down again ring pressure valve, water tank counterbalance valve and gas tank pressure regulator valve, for regulating and controlling the pressure size of each component；It is most lower
Face is the electrodynamic pump for injecting the confining pressure hand pump of confining pressure for core sample and injecting certain pressure water to water tank.
The test method of underground water seal cave depot rock mass water sealing condition test device of the present invention, it is characterised in that: the underground
The test device of water seal cave depot rock mass water sealing condition includes rack and is set on the rack rock core fastener, the rock core fastener
Top is connected with water tank by upper plug head, and the rock core fastener lower part is connected with gas tank by lower end cap, sets on the water tank
Have a water filling port and upper discharge outlet, the electrodynamic pump that the water filling port connection is supplied water, the upper discharge outlet connection counterbalance valve to control, surely
Determine hydraulic pressure in case, is additionally provided with visual window on the water tank；The gas tank is set there are four connector, and two of them connector is connected to liquid
In the meter of position, water level in gas tank when measuring test, other two connector is respectively connected to lower discharge outlet and gas injection port, gas injection port
It is sequentially connected gas pressure regulating valve, compressed air source unit, lower discharge outlet is gone back inside the gas tank for water extra in experimentation to be discharged
Embedded with pressure rod, pressure rod connects the loading motor below gas tank by pressurization screw rod, when implementing shearing force, load electricity
Machine drive pressure rod make be located at the intracorporal core sample of rock core fastener cut part occur at the uniform velocity be displaced；In the upper plug head
Equipped with water passage, with joining water box and core sample, air-liquid body flow channel is equipped in the lower end cap；Making step:
(1) production of core sample and placement, manufacturing specification are diameter of phi=100mm, the cylindrical rock mass of height h=200mm
Sample (can contain crack) at central axes, be loaded into rock core fastener, and fixed device；
(2) confining pressure loads, and applies confining pressure (confining pressure for preferably first carrying out minimum level is tested) using confining pressure hand pump, until predetermined
Confining pressure value and stablize the magnitude；
(3) water pressure loads, and water source is connected to electrodynamic pump, applies water pressure using electrodynamic pump and (preferably first carries out minimum level
Water pressure test, and ensure water pressures at different levels be respectively less than test when confining pressure), injected water into water tank by water filling port, directly
After to scheduled hydraulic pressure value, hydraulic pressure is stablized by water tank counterbalance valve.
(4) atmospheric pressure loads, and gas source is opened, high pressure gas is changed into certain pressure-sustaining gas by gas source pressure regulator valve,
Gas injects gas tank, improves atmospheric pressure step by step later, if the water sealing condition under test shear displacemant-confining pressure synergy,
Apply shearing force while applying atmospheric pressure, bubble is observed by visual window and is emerged moment, corresponding water pressure, air pressure are recorded
Power, tangential displacement, you can get it, and corresponding gas leaks critical condition.
Apparatus of the present invention can be used for testing the water sealing condition of underground water seal cave depot rock mass, the advantage is that:
(1) can be when testing rock mass water sealing condition, while guaranteeing that gas-liquid normally inputs, outside is in experimental rig
Sealing state.
(2) different confining pressures, shear displacemant, crack geometrical characteristic (gap wide, roughness, angle) can be tested to rock mass water seal
The influence of condition, and when can test Multiple factors coupling rock mass water sealing condition.
(3) can both test pore water, crevice water seals problem up for safekeeping, can also study under confining pressure effect, shear displacemant-confining pressure
Problem is sealed up for safekeeping under synergy.
Reusability is high, this experimental rig each section is mutually indepedent, can dismantle, clean after test, repeating benefit
With.And integral replacing is not needed when instrument is damaged, as long as the device for corresponding portion carries out local replacement, is subtracted
The maintenance cost of instrument is lacked.
Detailed description of the invention:
Fig. 1 is the schematic view of the front view of instrument of the present invention；
Fig. 2 is the side structure schematic view of instrument of the present invention；
Fig. 3 is the upper plug head upper surface figure of instrument of the present invention；
Fig. 4 is the lower end cap lower end surface figure of instrument of the present invention；
In figure, 1, visual window, 2, water tank, 3, upper discharge outlet, 4, upper plug head, 5, pressurization bed course, 6, rock core fastener, 7, rock
Core sample, 8, lower end cap, 9, rack, 10, pressure rod, 11, liquidometer, 12, gas tank, 13, loading motor, 14, water filling port, 15,
Gas injection port, 16, lower discharge outlet, 17, tangential force load speed regulation table, 18, liquid meter, 19, gas flow meter, 20, general supply,
21, loading power, liquid pumping source, 22, tank pressure table, 23, inner-ring gas pressure table, 24, air box pressure table, 25, gas tank pressure regulation
Valve, 26, ring pressure valve, 27, water tank counterbalance valve, 28, confining pressure hand pump, 29, electrodynamic pump, 30, pressurization screw rod, 31, water passage,
32, air-liquid body flow channel, 33, arch empty slot.
Specific embodiment:
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
The test device of underground water seal cave depot rock mass water sealing condition of the present invention, including rack 9 and the core being located in rack 9
Clamper 6,6 top of rock core fastener are connected with water tank 2 by upper plug head 4, and 6 lower part of rock core fastener passes through lower stifled
First 8 are connected with gas tank 12, and the water tank 2 is equipped with water filling port 14 and upper discharge outlet 3(pressure stabilizing discharge outlet), the water filling port 14
The electrodynamic pump 29 to supply water is connected, the upper discharge outlet 3 connects counterbalance valve 27 to control, stablize hydraulic pressure in case, goes back on the water tank
Equipped with visual window 1；The gas tank 12 is set there are four connector, and two of them connector is connected in liquidometer 11, to measure examination
Water level in gas tank when testing, other two connector are respectively connected to lower discharge outlet 16 and gas injection port 15, and gas injection port 15 is sequentially connected gas
Body pressure regulator valve 25, compressed air source unit (air pump), lower discharge outlet 16 are gone back inside the gas tank for water extra in experimentation to be discharged
Embedded with pressure rod 10, pressure rod 10 connects the loading motor 13 below gas tank by pressurization screw rod 30, is implementing shearing force
When, loading motor 13 drives pressure rod 10 to be cut generation at the uniform velocity position in part positioned at the intracorporal core sample 7 of rock core fastener
It moves；It is equipped with water passage 31 in the upper plug head, with joining water box and core sample, air-liquid body stream is equipped in the lower end cap
Dynamic channel 32.
Further, in order to design rationally, the size of above-mentioned water tank cavity part is diameter of phi=270mm, height h=
80mm, bottom arranged on left and right sides are separately connected the water filling port 14 and upper discharge outlet 3；The visual window cylinder is divided into two parts,
A part is top visual window, and another part is side visual window；During test, determine that gas passes through by each visual window
Rock sample crack and at the time of emerge in upper plug head channel, keeps the critical of water seal effect to judge under a certain gas pressure
State.
Further, Φ=100mm is placed in above-mentioned rock core fastener, the core sample of h=200mm is tried in the core
Setting pressurization bed course 5 around sample, rock core fastener lower section connector is connected with confining pressure hand pump 28, right by shaking hand pump 28
The water filling of rock core fastener internal pressurization bed course applies confining pressure to sample to reach.
Further, above-mentioned upper and lower plug is fixed on the both ends of the surface of clamper with plug flange respectively, is connected with box flange
Water receiving case, gas tank keep the airtightness of experimentation Instrumental to prevent rock mass sample from upper and lower displacement occurs in test.
Further, the arch empty slot that a height is 15mm is set on above-mentioned upper plug head with core sample connecting portion
33, to be displaced reserved space to core sample local under shear action.Lower end cap is in addition to a length of 90mm, the air-liquid that width is 12mm
Body flow channel 32 further includes that the pressure rod reserved for pressure rod is vented channel, and cross section size and pressure rod cross section are big
It is small almost the same.
Further, above-mentioned rack is equipped with display system, power supply, pressurized system, and top is followed successively by for showing
The load speed regulation table 17 of core sample shear velocity, the liquid meter 18 for showing fluid flow in water tank, for showing
The gas flow meter 19 of gas flow, loading power, liquid pumping source 21 and general supply 20 in gas tank；It next is inner-ring gas pressure
Table 23, tank pressure table 22 and gas tank pressure gauge 24, in test by the reading of pressure gauge numerical value, can get corresponding water,
Atmospheric pressure, to measure water sealing condition；It is down again ring pressure valve 26, water tank counterbalance valve 27 and gas tank pressure regulator valve 25, for regulating and controlling
The pressure size of each component；Bottom is to inject the confining pressure hand pump 28 of confining pressure for core sample and inject certain pressure to water tank
The electrodynamic pump 29 of water.
The test method of underground water seal cave depot rock mass water sealing condition test device of the present invention, the underground water seal cave depot rock mass
The test device of water sealing condition includes rack 9 and the rock core fastener 6 that is located in rack 9, and 6 top of rock core fastener passes through
Upper plug head 4 is connected with water tank 2, and 6 lower part of rock core fastener is connected with gas tank 12 by lower end cap 8, and the water tank 2 is equipped with
Water filling port 14 and upper discharge outlet 3(pressure stabilizing discharge outlet), the electrodynamic pump 29 that the connection of water filling port 14 is supplied water, the upper discharge outlet
3 connection counterbalance valves 27 are additionally provided with visual window 1 to control, stablize hydraulic pressure in case on the water tank；The gas tank 12 connects there are four setting
Interface, two of them connector are connected in liquidometer 11, water level in gas tank when measuring test, other two connector difference
It accesses lower discharge outlet 16 and gas injection port 15, gas injection port 15 is sequentially connected gas pressure regulating valve 25, compressed air source unit (air pump), lower discharge outlet
16, for water extra in experimentation to be discharged, are also embedded with pressure rod 10, pressure rod 10 passes through pressurization screw rod inside the gas tank
Loading motor 13 below 30 connection gas tanks, when implementing shearing force, loading motor 13 drives pressure rod 10 to be located at
The intracorporal core sample 7 of rock core fastener is cut part and occurs at the uniform velocity to be displaced；Water passage 31 is equipped in the upper plug head, with even
Water flowing case and core sample are equipped with air-liquid body flow channel 32 in the lower end cap；Operating procedure:
(1) production of core sample and placement, manufacturing specification are diameter of phi=100mm, the cylindrical rock mass of height h=200mm
Sample (can contain crack) at central axes, be loaded into rock core fastener, and fixed device；
(2) confining pressure loads, and applies confining pressure (confining pressure for preferably first carrying out minimum level is tested) using confining pressure hand pump, until predetermined
Confining pressure value and stablize the magnitude；
(3) water pressure loads, and water source is connected to electrodynamic pump, applies water pressure using electrodynamic pump and (preferably first carries out minimum level
Water pressure test, and ensure water pressures at different levels be respectively less than test when confining pressure), injected water into water tank by water filling port, directly
After to scheduled hydraulic pressure value, hydraulic pressure is stablized by water tank counterbalance valve.
(4) atmospheric pressure loads, and gas source is opened, high pressure gas is changed into certain pressure-sustaining gas by gas source pressure regulator valve,
Gas injects gas tank, improves atmospheric pressure step by step later, if the water sealing condition under test shear displacemant-confining pressure synergy,
Apply shearing force while applying atmospheric pressure, bubble is observed by visual window and is emerged moment, corresponding water pressure, air pressure are recorded
Power, tangential displacement, you can get it, and corresponding gas leaks critical condition.
Apparatus of the present invention can be used for testing the water sealing condition of underground water seal cave depot rock mass, the advantage is that:
(1) can be when testing rock mass water sealing condition, while guaranteeing that gas-liquid normally inputs, outside is in experimental rig
Sealing state.
(2) different confining pressures, shear displacemant, crack geometrical characteristic (gap wide, roughness, angle) can be tested to rock mass water seal
The influence of condition, and when can test Multiple factors coupling rock mass water sealing condition.
(3) can both test pore water, crevice water seals problem up for safekeeping, can also study under confining pressure effect, shear displacemant-confining pressure
Problem is sealed up for safekeeping under synergy.
Reusability is high, this experimental rig each section is mutually indepedent, can dismantle, clean after test, repeating benefit
With.And integral replacing is not needed when instrument is damaged, as long as the device for corresponding portion carries out local replacement, is subtracted
The maintenance cost of instrument is lacked.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (5)
1. a kind of test device of underground water seal cave depot rock mass water sealing condition, it is characterised in that: including rack and set on the rack
Rock core fastener, the rock core fastener top is connected with water tank by upper plug head, under the rock core fastener lower part passes through
Plug is connected with gas tank, and the water tank is equipped with water filling port and upper discharge outlet, and the electrodynamic pump that the water filling port connection is supplied water is described
Upper discharge outlet connection counterbalance valve is additionally provided with visual window on the water tank to control, stablize hydraulic pressure in case；There are four the gas tank is set
Connector, two of them connector are connected in liquidometer, water level in gas tank when measuring test, other two connector difference
Lower discharge outlet and gas injection port are accessed, gas injection port is sequentially connected gas pressure regulating valve, compressed air source unit, and lower discharge outlet was tested for being discharged
Extra water in journey, pressure rod is also embedded with inside the gas tank, and pressure rod connects the load electricity below gas tank by pressurization screw rod
Machine, when implementing shearing force, loading motor drives pressure rod to be cut positioned at the intracorporal core sample of rock core fastener
Part occurs at the uniform velocity to be displaced；Water passage is equipped in the upper plug head to set in the lower end cap with joining water box and core sample
There is air-liquid body flow channel, Φ=100mm is placed in the rock core fastener, the core sample of h=200mm is tried in the core
Setting pressurization bed course around sample, rock core fastener lower section connector is connected with confining pressure hand pump, by shaking hand pump to core
The water filling of clamper internal pressurization bed course applies confining pressure to sample to reach, sets on the upper plug head with core sample connecting portion
The arch empty slot that a height is 15mm is set, to be displaced reserved space to core sample local under shear action.
2. the test device of underground water seal cave depot rock mass water sealing condition according to claim 1, it is characterised in that: the water
The size of box cavity part be diameter of phi=270mm, height h=80mm, bottom arranged on left and right sides be separately connected the water filling port and
Upper discharge outlet；The visual window is divided into two parts, and a part is top visual window, and another part is side visual window；Test
In the process, at the time of determining that the gas for flowing through rock sample crack is emerged in upper plug head channel by each visual window, to judge
The critical state of water seal effect is kept under a certain gas pressure.
3. the test device of underground water seal cave depot rock mass water sealing condition according to claim 1, it is characterised in that: described
Upper and lower plug is fixed on the both ends of the surface of clamper with plug flange respectively, water tank, gas tank is connected with box flange, to prevent rock
In test upper and lower displacement occurs for body sample, keeps the airtightness of experimentation Instrumental.
4. the test device of underground water seal cave depot rock mass water sealing condition according to claim 1, it is characterised in that: the machine
Frame is equipped with display system, power supply, pressurized system, and top is followed successively by the load tune for showing core sample shear velocity
Fast table, for show the liquid meter of fluid flow in water tank, for show the gas flow meter of gas flow in gas tank, plus
Carry power supply, liquid pumping source and general supply；It next is inner-ring gas pressure table, tank pressure table and gas tank pressure gauge, in test
By the reading of pressure gauge numerical value, corresponding water, atmospheric pressure can get, to measure water sealing condition；It is again down ring pressure valve, water
Case counterbalance valve and gas tank pressure regulator valve, for regulating and controlling the pressure size of each component；Bottom is to inject enclosing for confining pressure for core sample
Press hand pump and the electrodynamic pump to water tank injection certain pressure water.
5. a kind of test method of underground water seal cave depot rock mass water sealing condition test device, it is characterised in that: the underground water seal
The test device of cave depot rock mass water sealing condition includes rack and is set on the rack rock core fastener, the rock core fastener top
It is connected with water tank by upper plug head, the rock core fastener lower part is connected with gas tank by lower end cap, and the water tank is equipped with note
The mouth of a river and upper discharge outlet, the electrodynamic pump that the water filling port connection is supplied water, the upper discharge outlet connection counterbalance valve is to control, stablize case
Interior hydraulic pressure is additionally provided with visual window on the water tank；The gas tank is set there are four connector, and two of them connector is connected to liquidometer
In, water level in gas tank when measuring test, other two connector is respectively connected to lower discharge outlet and gas injection port, and gas injection port is successively
Gas pressure regulating valve, compressed air source unit are connected, lower discharge outlet is also embedded with inside the gas tank for water extra in experimentation to be discharged
Pressure rod, pressure rod connect the loading motor below gas tank, when implementing shearing force, loading motor band by pressurization screw rod
Dynamic pressure rod make be located at the intracorporal core sample of rock core fastener cut part occur at the uniform velocity be displaced；It is equipped in the upper plug head
Water passage is equipped with air-liquid body flow channel with joining water box and core sample in the lower end cap；Operating procedure:
(1) core sample production and place, manufacturing specification be diameter of phi=100mm, the cylindrical rock mass sample of height h=200mm,
Contain crack at central axes, be loaded into rock core fastener, and fixed device；
(2) confining pressure loads, and applies confining pressure using confining pressure hand pump, the confining pressure test of minimum level is first carried out, until scheduled confining pressure
It is worth and stablizes the scheduled confining pressure value；
(3) water pressure loads, and water source is connected to electrodynamic pump, applies water pressure using electrodynamic pump, first carries out the hydraulic pressure of minimum level
Power test, and ensure that water pressures at different levels are respectively less than confining pressure when testing, it is injected water into water tank by water filling port, until scheduled
After hydraulic pressure value, hydraulic pressure is stablized by water tank counterbalance valve；
(4) atmospheric pressure loads, and gas source is opened, high pressure gas is changed into certain pressure-sustaining gas by gas source pressure regulator valve, gas
Gas tank is injected, improves atmospheric pressure step by step later, if the water sealing condition under test shear displacemant-confining pressure synergy, is applying
Apply shearing force while atmospheric pressure, bubble is observed by visual window and is emerged moment, corresponding water pressure is recorded, atmospheric pressure, cuts
Shear force, you can get it, and corresponding gas leaks critical condition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710539307.2A CN107192653B (en) | 2017-07-04 | 2017-07-04 | The test device and test method of underground water seal cave depot rock mass water sealing condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710539307.2A CN107192653B (en) | 2017-07-04 | 2017-07-04 | The test device and test method of underground water seal cave depot rock mass water sealing condition |
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| CN107192653A CN107192653A (en) | 2017-09-22 |
| CN107192653B true CN107192653B (en) | 2019-09-13 |
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