CN106872284A - Device and method for detecting rock toughness under simulation stratum condition - Google Patents
Device and method for detecting rock toughness under simulation stratum condition Download PDFInfo
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- CN106872284A CN106872284A CN201510916858.7A CN201510916858A CN106872284A CN 106872284 A CN106872284 A CN 106872284A CN 201510916858 A CN201510916858 A CN 201510916858A CN 106872284 A CN106872284 A CN 106872284A
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
-
- 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
- G01N3/02—Details
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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
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
Abstract
The invention discloses the apparatus and method for detecting rock toughness under simulation stratum condition.The device includes：Outer barrel, it is internally formed first annular seal space body；Fixture, is arranged in first annular seal space body, the position for keeping rock sample；Temperature control equipment and confined pressure control device, the temperature for being respectively used to control in first annular seal space body and the confined pressure applied to rock sample；Pressure applying means, for applying pressure to rock sample；Strain acquirement device, for gathering rock sample corresponding strain information when bringing device pressure applied is under pressure.Lasting strain information of the rock under the conditions of true stratum is can obtain using the disclosure, anti-bent modulus of rock etc. is also can obtain, it is significant for Cap Assessment for Cap Assessment provides new method and index.
Description
Technical field
This disclosure relates to rock toughness parameter detecting field, more particularly to it is a kind of for detecting simulation stratum condition
The device of lower rock toughness and a kind of method for detecting rock toughness under simulation stratum condition.
Background technology
In research in the past to rock physical property, generally using the measurement such as rock triaxial stress method of testing
The Young's modulus of elasticity of rock, Poisson's ratio, compression strength, cohesive force, internal friction angle, intensive parameter are (all
Such as compression strength, uniaxial tension test and shearing strength), and have ignored the reaction such as anti-bent modulus of rock
The information of rock toughness.Anti- bent modulus can generally weigh the ability that material resists flexural deformation, be to characterize material
The physical quantity of self attributes.
Found during for the petroleum geology exploration of formation of marine facies in southern China carbonate rock area, it is mainly by hydrocarbon
Source rock and cap rock are constituted.The Roughness Parameter of cap rock, particularly anti-bent modulus, can weigh it under external force
Whether flexural deformation is prone to, this is extremely important for the exploration and development in this kind of area, therefore for cap rock
The evaluation of Roughness Parameter of such as anti-bent modulus rise to an extremely important status.
In the prior art, the measurement for anti-bent modulus typically uses 3 points of curved experiments, will given size
Rectangle material is placed on two fulcrums of given size, and the density of load is continued to increase from centre, until rock
Rupture, pacing amount is carried out to the deformation after rupture if necessary.Fig. 1 is shown in the prior art using letter
Branch disk concentrfated load ballistic method determines the schematic diagram of silicon chip bending strength.The method is using certain altitude
Steel ball slides impact silicon chip center to calculate the bending strength of silicon chip.The defect of the method is：The experiment can only
Carried out under normal temperature, condition of normal pressure, it is impossible to reduce testing sample under true strata pressure and temperature conditionss
Situation.Additionally, it is tested every time can only record one-shot, experimental error is larger.Therefore, the method
It is not suitable for obtaining the Roughness Parameter of the rock under the conditions of true stratum.
The content of the invention
The first purpose of the disclosure is to provide a kind of toughness for being easy to detection rock sample under simulation stratum condition
The device of parameter.The disclosure additionally provides a kind of for detecting toughness of the rock sample under simulation stratum condition
The method of parameter.
According to an aspect of this disclosure, disclose a kind of for detecting rock toughness under simulation stratum condition
Device, the device includes：Clamper outer barrel, it is internally formed first annular seal space body；Fixture, is arranged at institute
State in first annular seal space body, the position for keeping rock sample；Temperature control equipment, it is described for controlling
Temperature in first annular seal space body；Confined pressure control device, for the confined pressure for controlling to apply to rock sample；Pressure
Power bringing device, including it is arranged at the gas suction device of first annular seal space external body and to be arranged at first close
The first piston of inside cavity is sealed, first piston has top, gas suction dress towards the side of rock sample
Put and be communicated in the first annular seal space body to drive first piston to move so that come directly towards and apply to rock sample
Pressure；Strain acquirement device, for gathering rock sample when bringing device pressure applied is under pressure
Corresponding strain information, the strain information includes the deflection degree of rock sample.
According to another aspect of the present disclosure, a kind of rock toughness for detecting under simulation stratum condition is disclosed
Method, the method includes：Rock sample is fixed in airtight cavity；Control the temperature in the airtight cavity
Degree, and control applies to the confined pressure of rock sample；Apply pressure to rock sample, and obtain rock sample
Corresponding strain information when by pressure applied, the strain information includes the deflection degree of rock sample；
Based on pressure applied and strain information acquisition rock sample under relevant temperature and confined pressure environment
Roughness Parameter.
The disclosure is in certain temperature and confined pressure environment by making rock sample, to simulate real stratum
Condition, and by under simulation stratum condition rock sample apply pressure and gather rock sample pressure
Produced strain information obtains the parameters such as the bent amount of the anti-mould of rock under power.Using the disclosure, rock is can obtain
Lasting strain information of the stone under the conditions of true stratum, suffered pressure etc. when can be also broken according to rock sample
The anti-bent modulus of rock is obtained, for Cap Assessment provides new method and index, there is weight for Cap Assessment
Want meaning.Additionally, the disclosure also has the advantages that error is small, certainty of measurement is high.
Brief description of the drawings
Disclosure illustrative embodiments are described in more detail by with reference to accompanying drawing, the disclosure it is above-mentioned
And other purposes, feature and advantage will be apparent, wherein, in disclosure illustrative embodiments
In, identical reference number typically represents same parts.
Fig. 1 is the apparatus structure schematic diagram for determining the anti-Qu Qiangdu of silicon chip using 3 points of curved experiments in the prior art；
Fig. 2 is a specific example according to the disclosure for detecting rock toughness under simulation stratum condition
The structural representation of device；
Fig. 3 is the rock sample pressure under simulation stratum condition and deflection degree obtained using the disclosure
Relation curve schematic diagram.
Description of reference numerals
1- clamper outer barrels；The hold assemblies of 2- first；The hold assemblies of 3- second；5- confined pressure pumps；
6- foil gauges；7- deformeters；8- hydraulic pumps；9- cylinder bodies；10- first pistons；
11- second pistons；12- comes directly towards；13- temperature controllers；14- confined pressure sets；15- pressure transmitters；
16- valves；17- processing units；18- display units
Specific embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although being shown in accompanying drawing
The preferred embodiment of the disclosure, however, it is to be appreciated that may be realized in various forms the disclosure without should be by
Embodiments set forth herein is limited.Conversely, thesing embodiments are provided so that the disclosure is more saturating
It is thorough and complete, and the scope of the present disclosure can intactly be conveyed to those skilled in the art.
The present disclosure discloses a kind of device for monitoring rock toughness under simulation stratum condition.The device includes
Clamper outer barrel, fixture, temperature control equipment, confined pressure control device, pressure applying means, strain acquirement
Device.Clamper outer barrel forms first annular seal space body.Fixture is arranged in the first annular seal space body,
Position for keeping rock sample.Temperature control equipment is used to control the temperature in the first annular seal space body.
Confined pressure control device, for the confined pressure for controlling to apply to rock sample.Pressure applying means include being arranged at the
Gas suction device outside one seal cavity and the first piston in portion in first annular seal space body is arranged at,
One piston has top towards the side of rock sample, and gas suction device is communicated to the first annular seal space body
It is interior driving first piston to move so that come directly towards and apply pressure to rock sample.Strain acquirement device is used to adopt
Collection rock sample corresponding strain information when bringing device pressure applied is under pressure, the strain letter
Breath includes the deflection degree of rock sample.
By application said apparatus, rock sample to be measured can be made to be placed in the environment of the true formation condition of simulation,
Then apply pressure to rock sample and gather its strain information, so as to can obtain the lasting strain of rock sample
Information, suffered pressure etc. obtains the anti-bent modulus of rock when can be also broken according to rock sample.
Fig. 2 is a specific example according to the disclosure for detecting rock toughness under simulation stratum condition
The structural representation of device.
In the specific example, clamper outer barrel 1 is the tube structure of closing, and the first sealing can be formed inside it
Cavity.
Fixture can include the first hold assembly 2 and the second hold assembly 3.First hold assembly 2 and second adds
Holding the outer end of part 3 can be mounted respectively to the first end face and second end face of clamper outer barrel 1, the first clamping
Inner and between second blessing part 3 the inner the gap of part 2 can be used to clamp rock sample to be measured.For example,
The outer end of the first hold assembly 2 can be fixed by screw thread with the inner surface of the first end face of clamper outer barrel 1
Connection, the outer end of the second hold assembly 3 can be by screw thread and the interior table of the second end face of clamper outer barrel 1
Face is fixedly connected, and the tightness of clamping can be adjusted by rotating screw thread.First hold assembly 2 can be
Hollow cylinder.First piston 10 can be arranged in the cavity of the hollow cylinder, and with clamper outer barrel 1
The second seal cavity is formed between end face.Gas suction device can be communicated in first annular seal space body this second
Seal cavity, to drive first piston 10 to move, so as to give the surface (example of rock sample by top 12
Such as the center on surface) apply pressure.During the shape of top 12 can be rectangle, hemispherical and cone
Any one, such as a diameter of 5mm's is hemispherical.Term " inside and outside " herein refers to Fig. 2.
In this specific example, the first hold assembly 2 and the second hold assembly 3 can be hollow cylinder,
Its external diameter (radius) is 25mm, and internal diameter (radius) is 18mm, and the axis of the two with always
On line, for example, it is respectively positioned on the central axis of first annular seal space body, so that the rock-like in detection process
It is the corresponding balanced and reverse power of lifting surface area that product are subject to the power of the fixture from both sides.
Gas pumping part in the specific example can include hydraulic pump 8, cylinder body 9 and be placed in the cylinder body 9
Second piston 11.It is mutual disconnected two parts that second piston 11 can separate the cavity in cylinder body 9.
Hydraulic pump 8 can be fixed on outside clamper outer barrel 1 by four connecting rods, and its input can be communicated to pressure
Power source, its output end can be communicated to the cavity of the side of second piston 11 in cylinder body 9, and second piston 11
The cavity of opposite side can then be communicated to the second seal cavity in first annular seal space body.Hydraulic pump 8 can be to
Second piston 11 in cylinder body 9 is pressurizeed, so that second piston 11 is promoted along the axial movement of cylinder body 9, and
In the motion process of second piston 11, the gas in second piston 11 to the gas passage between first piston 10
Body is compressed, so as to promote first piston 10 to move, and then is applied axially to rock sample by top 11
Pressure, deforms upon rock sample.By this two-stage piston structure, hydraulic pump 8 can be fully ensured that
In liquid do not pollute clamper outer barrel 1 and fixture etc., to extend the service life of instrument, and beneficial to instrument
Reclaim.
The detection means may also include pressure transmitter 15.Pressure transmitter 15 can be connected to from second piston
The gas of 11 to first annular seal space body (the second seal cavity in first annular seal space body is specially in this example)
Path, to gather the gas pressure in the gas passage.Those skilled in the art can be according to being collected
Gas pressure obtains the single-point load pressure that now rock sample is born.In order to realize wide range measure, should
Pressure transmitter 15 may include three pressure inverting units of parallel connection：(range is extremely for low pressure transducing unit
2Mpa), (range is extremely for middle pressure pressure transducing unit (range to 20Mpa) and high-pressure transducing unit
50Mpa), its input can be respectively connecting to the gas passage, and its output end can be respectively connecting to processing unit
17, to ensure that more accurate pressure value can be measured in each pressure limit.Wherein, in low pressure
Can respectively connect a valve 16 on transducing unit and middle pressure pressure transducing unit, to be closed when outranging
Respective valves 16, it is to avoid damage corresponding pressure inverting unit.
Temperature control equipment can include heater block (not shown) and temperature controller 13.Heater block can be set
On the lateral wall of clamper outer barrel 1.Temperature controller 13 can control heater block heating.Can be by processing unit
17 set temperature to temperature controller 13, and the temperature control heater block that temperature controller 13 can be based on the setting is heated,
To the temperature conditionss of simulated formation.
Confined pressure control device can include confined pressure pump 5.The output end of confined pressure pump 5 can be communicated to first annular seal space body,
Apply confined pressure to rock sample so that confined pressure liquid is pressed into the first annular seal space body.In this specific example,
The integral structure and clamper outer barrel 1 of the first hold assembly 2, the second hold assembly 3 and rock sample composition
Closed annular space can be formed between inwall.The output end of confined pressure pump 5 can be connected with the closed loop Kongxiang.Can
By processing unit 17 to confined pressure pump 5 set confined pressure value, confined pressure pump 5 can the setting confined pressure value to rock
Sample applies corresponding confined pressure load, to the pressure condition of simulated formation.
The confined pressure set 14 that will can be made of rubber is socketed in the outer of the integral structure of fixture and rock sample composition
On the wall of side, confined pressure is covered 14 by confined pressure and pass to rock sample, so as to prevent confined pressure liquid and rock sample
Directly contact.For example, rock sample to be measured can be processed into the cylinder that end face radius is 25mm, make this
The lateral wall of integral structure is uniform, such that it is able to avoid confined pressure liquid and rock sample directly contact
While do not influence the confined pressure that applies to rock sample, with more realistically simulation stratum condition.
Strain acquirement device can include foil gauge 6 and deformeter 7.Foil gauge can snugly be arranged on rock
Sample dorsad comes directly towards 12 side, and such as laminating is arranged on the center of the side.Deformeter 7 may be provided at
The outside of clamper outer barrel 1 and it is electrically connected to foil gauge 6.The strain information that deformeter 7 is collected can be passed
Deliver to processing unit 17.
Processing unit 17 can be set the temperature that the confined pressure that confined pressure control device provided and temperature control equipment are provided
Degree is applied to the pressure and corresponding strain information of rock sample with simulation stratum condition based on top 12
Obtain the Roughness Parameter (such as anti-bent modulus) of the rock under the formation condition.Processing unit 17 can be meter
Calculation machine.Display unit 18 can show parameter and result of calculation of set or collection etc..
The disclosure also discloses a kind of method for detecting the rock toughness under simulation stratum condition.The method
Including：Rock sample is fixed in airtight cavity；The temperature in the airtight cavity, and control is controlled to apply
Add to the confined pressure of rock sample；Apply pressure to rock sample, and obtain rock sample by being applied
Corresponding strain information during pressure, the strain information includes the deflection degree of rock sample；Based on what is applied
Pressure and the strain information obtain Roughness Parameter of the rock sample under relevant temperature and confined pressure environment.
The Roughness Parameter can include maximum deflection degree W, the single-point load intensity P and anti-Qu Mo of rock sample
Amount K.In the case where rock sample is cylinder, with following relation：
Wherein W is the maximum deflection degree of rock sample, and P is the single-point load pressure being subject to when rock sample is broken
Power, R is the radius of the end face of rock sample, and S is the thickness of rock sample.
The party can be realized by the as described above device for being used to detecting rock toughness under simulation stratum condition
Method, detail is no longer repeated one by one.
Using example
For ease of understanding the scheme and its effect of the embodiment of the present disclosure, a concrete application example given below.
It will be understood by those skilled in the art that the example is only for the purposes of understanding the disclosure, its any detail is not
It is intended to limit the disclosure by any way.
The rock toughness under simulation stratum condition is detected in this application example using device as shown in Figure 2,
The detection method is under pressure, the temperature conditionss of simulation actual formation, according to barometric gradient to the rock
Sample presses, and obtains the maximum deflection degree when rock sample ruptures, single-point load intensity and resists
Bent modulus, and the rock sample according to evaluation, comprise the following steps that.
Step 1, prepares rock sample：
By the rock sample grinding process to cylinder, 5mm is intercepted along the thickness direction of cylinder, and will
The rock sample drying；
Step 2, builds experiment porch：
The first piston 10 is arranged on the inwall of the first hold assembly 2, and by the first piston 10
The top 12 of side presses closer residence and states rock sample；
The cross searching of the foil gauge 6 is pasted and fixed on the circle centre position on the rock sample surface, described will be answered
The lead for becoming the two ends of piece 6 is connected with adapter, then the second hold assembly 3 is arranged on into the rock sample
Opposite side；
Step 3, equipment initial survey：
Detect the resistance value of the two ends lead of the foil gauge 6；
If resistance value is consistent with the calibration value of the foil gauge 6, the lead is connected to the deformeter 7
Input, start the deformeter 7, and the deformeter 7 is reset；
If resistance value is inconsistent with the calibration value of the foil gauge 6, the foil gauge 6 is changed, and repeat
The step 3；
Step 4, sets experiment parameter；
Experiment parameter is set by the processing unit, the experiment parameter includes the confined pressure pump 5 output
The temperature upper limit of upper pressure limit value and the temperature controller 13；
The upper pressure limit value of the output of confined pressure pump 5 can be set as 150Mpa, the temperature of the temperature controller 13
Degree higher limit can be set as 150 DEG C.
Step 5, loads confined pressure：
Start the confined pressure pump 5, pumped into the clamper outer barrel 1 pressure fluid by the confined pressure pump 5
The sealing ring of side is aerial, confined pressure loading is carried out to the rock sample, until pre- in reaching the step 4
If value；
Step 6, loading heating：
Start the temperature controller 13, temperature control signals sent to the temperature controller 13 by processing unit 17,
Heat the clamper outer barrel 1 of the temperature controller 13 pairs, until reaching preset value in the step 4；
Step 7, loading single-point load applies：
Step 71, starts the hydraulic pump 8, and using the hydraulic pump, 8 pairs make the second piston 11 pressurize,
And the second piston 11 is promoted along the axial movement of the cylinder body 9, the second piston 11 is compressed described
The gas compartment of the side of first piston 10, and then the gas pressure in the gas compartment is improved, so that
The first piston 10 is axially moved along the inner chamber of the first hold assembly 2；
The top 12 applies axial force to the rock sample center so that the rock sample is produced
Deformation；
The dependent variable of the rock sample is detected by the foil gauge 6, sample frequency is 1 time/second, and is led to
Cross the deformeter 7 to transmit to processing unit 17 testing result, the is gathered by the pressure transmitter 15
The gas pressure value of the side of two piston 11；
Step 72, judges whether the rock sample is broken；
If the rock sample is unbroken, retracts to the step 71 order and perform；
If the rock sample fracture, stops pressurizeing the second piston 11, and jump to step 8；
During the step 7, the valve 16 of three pressure inverting units and its input is kept
Open, when low pressure transducing unit full scale, closing is connected on the valve of the pressure inverting unit input
Door 16；During central pressure pressure transducing unit full scale, closing is connected on the valve of the pressure inverting unit input
Door 16；After experiment terminates, the data that each pressure inverting unit is gathered are transmitted to place by data collecting card
Reason unit 17；
Step 8, according to the dependent variable of the rock sample gathered under each pressure condition in the step 72,
Single-point load pressure-deflection degree the relation curve of the rock sample is obtained by processing unit 17, Fig. 3 is should
The relation of two kinds of different rock sample pressures and deflection degree under simulation stratum condition obtained with the disclosure
Curve synoptic diagram, abscissa is single-point load pressure (unit：N), ordinate is deflection degree (mm)；
Step 9, fitting a straight line is carried out by the straight line portion of the deflection degree-load relation curve, obtains described
The maximum deflection degree W of rock sample；
Step 10, the composite bending modulus K of the rock sample is calculated by following equation, and result of calculation is entered
Row output analysis；
Wherein W is the maximum deflection degree of rock sample, and P is the single-point load pressure being subject to when rock sample is broken
Power, R is the radius of the end face of rock sample, and S is the thickness of rock sample.
Using the disclosure, can detect different rock samples single-point load intensity (maximum load during destruction),
Maximum deflection degree, anti-bent modulus etc..Table 1 shows the testing result to part rock sample.
Table 1
From table 1 it follows that the single-point load of marl, silty and argillaceous siltstoue each sample
Pressure-deflection degree relation is substantially in linear relation, illustrates that these samples are main with elasticity in single-point loading procedure
Based on deformation, plastic deformation is little.And the single-point load of cream rock-amount of deflection relation curve can be seen that and be divided into two sections,
In main based on elastic deformation, the linear section compared with cream rock under low load；Cream salt occurs bright under high load
Aobvious plastic deformation, and flow amount is very big, under geological conditions, it is easy to which the rock of plastic deformation could conduct
The Roofrock of Natural Gas of high-quality.
It is described above the presently disclosed embodiments, described above is exemplary, and non-exclusive,
And it is also not necessarily limited to disclosed each embodiment.In the scope and spirit without departing from illustrated each embodiment
In the case of, many modifications and changes will be apparent from for those skilled in the art.
The selection of term used herein, it is intended to best explain the principle of each embodiment, practical application or to market
In technology improvement, or make the art other those of ordinary skill be understood that it is disclosed herein each
Embodiment.
Claims (10)
1. a kind of device for detecting rock toughness under simulation stratum condition, the device includes：
Clamper outer barrel (1), it is internally formed first annular seal space body；
Fixture, is arranged in the first annular seal space body, the position for keeping rock sample；
Temperature control equipment, for controlling the temperature in the first annular seal space body；
Confined pressure control device, for the confined pressure for controlling to apply to rock sample；
Pressure applying means, including be arranged at the gas suction device of first annular seal space external body and be arranged at
The first piston (10) in portion in first annular seal space body, first piston (10) has towards the side of rock sample
Top (12), gas suction device is communicated in the first annular seal space body to drive first piston (10) to transport
It is dynamic so that top (12) applies pressure to rock sample；
Strain acquirement device, for gathering rock sample in the bringing device pressure applied phase that is under pressure
The strain information answered, the strain information includes the deflection degree of rock sample.
2. the device for detecting rock toughness under simulation stratum condition according to claim 1, wherein,
The fixture includes the first hold assembly (2) and the second hold assembly (3)；
First hold assembly (2), its outer end is attached to the first end face of clamper outer barrel (1)；
Second hold assembly (3), its outer end is attached to the second end face of clamper outer barrel (1), the first clamping
Inner and between the second hold assembly (3) the inner the gap of part (2) is used to clamp rock sample；
Wherein, the first hold assembly (2) is hollow cylinder, and first piston (10) is arranged at the hollow cylinder
Cavity in, form the second seal cavity between the first end face of first piston (10) and clamper outer barrel (1),
Gas suction device is communicated to second seal cavity in the first annular seal space body Nei to drive first piston
(10) move.
3. the device for detecting rock toughness under simulation stratum condition according to claim 2, wherein,
First hold assembly (2) and the second hold assembly (3) are hollow cylinder, and its internal diameter and external diameter distinguish phase
Deng, and its axis is on the same line.
4. according to any one in claims 1 to 3 for detecting simulation stratum condition under rock it is tough
The device of property, the device also includes：
Confined pressure set (14), is made up of rubber, the lateral wall for being socketed in fixture and rock sample.
5. the device for detecting rock toughness under simulation stratum condition according to claim 1, wherein,
The gas suction device includes hydraulic pump (8), cylinder body (9) and the second work being arranged in cylinder body (9)
Plug (11), the output end of hydraulic pump (8) is communicated to the cavity of cylinder body (9) interior second piston (11) side,
The cavity of cylinder body (9) interior second piston (11) opposite side is communicated to the first annular seal space body.
6. the device for detecting rock toughness under simulation stratum condition according to claim 1, wherein,
The detection means also includes pressure transmitter (15), and pressure transmitter (15) is connected to from second piston (11)
To the gas passage of first annular seal space body, to gather the gas pressure in the gas passage.
7. the device for detecting rock toughness under simulation stratum condition according to claim 1, wherein,
The temperature control equipment includes being arranged on heater block and the control of clamper outer barrel (1) lateral wall
Make the temperature controller (13) that the heater block is heated；
The confined pressure control device includes confined pressure pump (5), and the output end of confined pressure pump (5) is communicated to described first
Seal cavity, confined pressure liquid is pressed into the first annular seal space body and applies confined pressure to rock sample.
8. the device for detecting rock toughness under simulation stratum condition according to claim 1, wherein,
The strain acquirement device includes foil gauge (6) and deformeter (7), and foil gauge (6) is snugly arranged on
Rock sample dorsad comes directly towards the side of (12), and deformeter is arranged at clamper outer barrel (1) outside and electrically connects
To foil gauge (6).
9. a kind of method for detecting the rock toughness under simulation stratum condition, the method includes：
Rock sample is fixed in airtight cavity；
The temperature in the airtight cavity, and control is controlled to apply to the confined pressure of rock sample；
Rock sample applying pressure is given, and obtains rock sample and strained accordingly when by pressure applied
Information, the strain information includes the deflection degree of rock sample；
Rock sample is obtained in relevant temperature and confined pressure environment based on pressure applied and the strain information
Under Roughness Parameter.
10. method according to claim 9, wherein, the Roughness Parameter includes rock sample most
Big deflection degree W, single-point load intensity P and anti-bent modulus K；
Wherein, in the case where rock sample is cylinder, with following relation：
Wherein W is the maximum deflection degree of rock sample, and P is the single-point load pressure being subject to when rock sample is broken
Power, R is the radius of the end face of rock sample, and S is the thickness of rock sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916858.7A CN106872284B (en) | 2015-12-10 | 2015-12-10 | For detecting the device and method of rock toughness under simulation stratum condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510916858.7A CN106872284B (en) | 2015-12-10 | 2015-12-10 | For detecting the device and method of rock toughness under simulation stratum condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106872284A true CN106872284A (en) | 2017-06-20 |
| CN106872284B CN106872284B (en) | 2019-11-05 |
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| CN110646284A (en) * | 2019-09-29 | 2020-01-03 | 东北大学 | Multi-axis loading and water saturation coupling type rock three-point bending experimental device and method |
| CN111579438A (en) * | 2020-05-29 | 2020-08-25 | 中国石油大学(华东) | Warm-pressing clamping device |
| CN112485112A (en) * | 2020-11-16 | 2021-03-12 | 成都理工大学 | Method for measuring and calculating deformation parameters of undisturbed sample of weak and cracked rock mass |
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| CN112485112A (en) * | 2020-11-16 | 2021-03-12 | 成都理工大学 | Method for measuring and calculating deformation parameters of undisturbed sample of weak and cracked rock mass |
| CN112485112B (en) * | 2020-11-16 | 2022-11-01 | 成都理工大学 | Method for measuring and calculating deformation parameters of undisturbed sample of weak and cracked rock mass |
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