CN108709809A - A kind of simple rock weathering, creep integration experimental rig and test method - Google Patents
A kind of simple rock weathering, creep integration experimental rig and test method Download PDFInfo
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- CN108709809A CN108709809A CN201810031886.4A CN201810031886A CN108709809A CN 108709809 A CN108709809 A CN 108709809A CN 201810031886 A CN201810031886 A CN 201810031886A CN 108709809 A CN108709809 A CN 108709809A
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- 239000011435 rock Substances 0.000 title claims abstract description 154
- 230000010354 integration Effects 0.000 title claims abstract description 23
- 238000010998 test method Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000012360 testing method Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 238000001035 drying Methods 0.000 claims abstract description 27
- 238000002474 experimental method Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 230000001351 cycling effect Effects 0.000 claims abstract description 14
- 239000004575 stone Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 238000013401 experimental design Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 9
- 230000007774 longterm Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000006253 efflorescence Methods 0.000 description 3
- 206010037844 rash Diseases 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000243 solution Substances 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
- 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
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- 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
- G01N2203/0048—Hydraulic means
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- 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
- G01N2203/0071—Creep
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Abstract
A kind of simple rock weathering, creep integration experimental rig and test method, the device can be used for carrying out the creep test of the lower rock of stable dead load effect, and it is carried out at the same time atmospheric disintegration of rocks experiment during creep test, realizes the long time creep test of rock under " stablizing dead load-drying and watering cycle or cold cycling " coupling.It includes sample container system, lever loading mechanism, water circulation system and blower system.Sample container system has the heating device that rock sample is formed the hole cylinder shape bucket of sidewise restraint and heated to rock sample, water circulation system humidifies rock sample, blower system is dried and cools down to rock sample, and rock sample is made to realize drying and watering cycle and cold cycling.Lever loading mechanism vertically acts on rock sample, and constant weight load, unloading are carried out to it.
Description
Technical field
The present invention relates to rock property test device and method, especially one kind can carrying out rock in sidewise restraint, axis
With the deformation of creep experimental rig and its test method of efflorescence under to load action.
Background technology
Currently, China express railway operating mileage reaches 2.2 ten thousand kilometers, rank the first in the world.Meanwhile also a large amount of lines
Road is being built, and 3.0 ten thousand kilometers are up to the year two thousand twenty.The construction of high-speed railway is related to a large amount of rock engineerings, including rock matter
Heavy cut excavation, deep tunnel excavation, bridge Deep Foundation Excavation etc., these all must be set up in clear understanding Related Rocks
On the basis of physical and mechanical property.Among these, under rock occurs under external environmental activity weathering phenomenon and load action with
The deformation of creep that time passage generates is to influence the key factor of High Speed Rail Projects structural stability.How effective evaluation rock
The weathering characteristic and creep properties of stone have become an important topic of High Speed Rail Projects construction.
Natural rock in nature, occurrence status change with engineering construction, residing stress state and outside
Environment can all send out change, to make rock physics mechanical property change, and generate short-term and long-term deformation, rock
These deformations are an important factor for influencing High Speed Rail Projects structural stability, and especially long-term continuous deformation will seriously threaten
High-speed railway circuit operation security.Slacking is the main reason for causing rock physics mechanical property to change, currently, rock
The variation of environment in nature, rock are generally simulated in the research of weathering characteristic by indoor drying and watering cycle or cold cycling
TERM DEFORMATION feature then simulated using indoor creep test, obtain deformation of the specific rock under action of long-term load
Feature.That is, existing research is that two process independent studies of atmospheric disintegration of rocks and creep are carried out experiment acquisition respectively
Respective physics classroom teaching and its changing rule, this is not obviously inconsistent with the virtual condition of rock.The actual situation is that
Rock of the preservation in nature, slacking and the deformation of creep are simultaneous under external environmental activity.Steadily in the long term
The deformation process of rock is the efflorescence along with rock itself under load action, and efflorescence causes rock physics power
Learn the change of property, reflection in the change of rock TERM DEFORMATION characteristic namely rock external environment change drying and watering cycle,
The process of TERM DEFORMATION is generated under cold cycling and load coupling.Therefore, more rational experiment should be compacted in rock
Become experiment and be carried out at the same time atmospheric disintegration of rocks experiment in the process, is i.e. rock " weathering-creep " is tested, the test result being achieved in that
It more coincide with the practical long-term deformation behaviour of rock in engineering, test result can be used for rock engineering structure long-time stable
The evaluation and prediction of property.In addition, existing creep of rock experimental rig will realize prolonged dead load effect, often through electricity
Fluid servo system realizes, and very high to system control precision and stability requirement, to also make testing equipment cost high
Expensive, testing expenses are high, and due to the difference of experimental condition and actual conditions, test result is difficult to be directly used in high-speed iron again
Structure TERM DEFORMATION caused by the excavation of road cutting, tunnel, bridge foundation etc. is evaluated.Therefore, rock is accurately grasped with weathering
Creep deformation properties under effect are of great significance, and it is necessary to develop a kind of simple rock weathering-creep integration examination
Check system.
Invention content
Technical problem to be solved by the invention is to provide a kind of simple rock weathering, creep integration experimental rigs, should
Device can be used for carrying out the creep test of the lower rock of stable dead load effect, and is carried out at the same time during creep test
Atmospheric disintegration of rocks is tested, and realizes the long-term creep examination of rock under " stablizing dead load-drying and watering cycle or cold cycling " coupling
It tests.
The technical solution adopted by the present invention to solve the technical problems is as follows：
A kind of simple rock weathering of the present invention, creep integration experimental rig, it is characterized in that：It includes sample container system
System, lever loading mechanism, water circulation system and blower system；The sample container system, which has, forms laterally rock sample
The hole cylinder shape bucket of constraint and the heating device that rock sample is heated, the water circulation system to rock sample into
Row humidification, the blower system is dried and cools down to rock sample, and rock sample is made to realize drying and watering cycle and cold and hot follow
Ring；The lever loading mechanism vertically acts on rock sample, and constant weight load, unloading are carried out to it.
Another technical problem to be solved by this invention is to provide a kind of using above-mentioned simple rock weathering, creep one
Change the test method of experimental rig, this method comprises the following steps
1. cylindric rock sample is placed in drying in oven at least 24 hours to constant weight, drying temperature is 50 DEG C；
2. rock sample is placed in sample container system, by the hole cylinder shape for being seated quadrangle box middle position
Bucket provides sidewise restraint to rock sample；
3. based on lever principle according to the vertical on-load pressure value of experimental design, by required weights quantity carry in hanging
On bar, carry out stablizing constant weight vertically loading to rock sample；Two amesdial acquisition rock examinations are begun through from weights are hung
The vertical compressive deformation magnitude of sample, it is primary every 10min records, until continuous 3 times record numerical value are constant；
4. carrying out drying and watering cycle slacking to rock sample, water circulation system water filling into quadrangle box is opened, until
The upper round permeable stone at the top of rock sample is flooded, water filling is stopped and impregnates rock sample 24 hours in water；Water is opened to follow
Loop system drains water from quadrangle box；It opens blower system and pumps normal temperature air into quadrangle box, while opening heating
Device, and temperature is adjusted to experiment set temperature, drying rock sample 24 hours；
5. carrying out cold cycling slacking to rock sample, the water in quadrangle box is drained, opens heating device,
Temperature is adjusted to experimental design high temperature values, rock sample is heated 24 hours, is then shut off heating device, while opening air blast
System persistently pumps cold air, cooling rock sample 24 hours into quadrangle box；
6. according to experimental design, the drying and watering cycle of setting number is carried out to rock sample and cold cycling acts on；
7. after completing setting slacking test, two amesdial readings of record are continued for, until stabilization, stops examination
It tests, removal weights, takes out rock sample.
The beneficial effects are mainly as follows following aspects：
1, rock sample is applied using lever loading mechanism and stablizes vertical pressure, added with traditional manual hydraulic jack
Load mode is compared, and weight linear meter thick stick on-load pressure the case where increasing or reducing will not occur as rock sample deforms, and realize
Constant weight loads；And compared with electrohydraulic servo-controlling system, present invention load and experiment process control are very simple, equipment manufacturing cost
It is cheap, and several groups parallel test can be carried out simultaneously, the efficiency of creep test is substantially increased, is obtained more accurate
Test result；
2, by simply changing experiment process, it can also realize and creep is vertically unloaded under sidewise restraint to rock sample
Slacking test under experiment, the vertical unloading of the slacking test under rock certain pressure, rock etc. and weathering under rock load action
With the relevant experiment of creep；
3, simple in structure, dismounting is easy to assembly, cheap, is very suitable for the more simple and crude engineering site examination of condition
Room is tested, while carrying out a large amount of rock weatherings, creep test, greatly improves test efficiency, there is wide promotion prospect.
Description of the drawings
The present invention includes following five width attached drawing：
Fig. 1 be a kind of simple rock weathering of the present invention, creep integration experimental rig stereogram；
Fig. 2 be a kind of simple rock weathering of the present invention, creep integration experimental rig front view；
Fig. 3 is the section view of sample containment system in a kind of simple rock weathering of the present invention, creep integration experimental rig
Figure；
Fig. 4 is the vertical view of sample containment system in a kind of simple rock weathering of the present invention, creep integration experimental rig
Figure；
Fig. 5 is that the structure of lever loading mechanism in a kind of simple rock weathering of the present invention, creep integration experimental rig is shown
It is intended to；
Component, position and corresponding label in figure：Portal frame 10, column 11, sample container system 20, rectangular box
Body 21, water injection hole 22, osculum 23, air admission hole 24, rectangular heating plate 25, rectangular permeable stone 26, hole cylinder shape bucket 27, band
Hole cylindrical heater plate 28, upper round permeable stone 29, lower round permeable stone 30, circular steel cushion block 31, lever loading mechanism 40,
Crossbeam 41, U-shaped movable ram 42, bearing 43, arc groove cushion block 44, solid cylindrical roller bearing 45, amesdial 46, sunpender 47,
Weights 48, water circulation system 51, blower system 52.
Specific implementation mode
Make the description of a step to the present invention below with reference to drawings and examples.
Referring to Figures 1 and 2, a kind of simple rock weathering of the invention, creep integration experimental rig include sample container
System 20, lever loading mechanism 40, water circulation system 51 and blower system 52.The sample container system 20 has to rock
Sample forms the hole cylinder shape bucket 27 of sidewise restraint and to the heating device that rock sample is heated, the water cyclic system
51 pairs of rock samples of system humidify, and the blower system 52 is dried and cools down to rock sample, and rock sample is made to realize
Drying and watering cycle and cold cycling；The lever loading mechanism 40 vertically acts on rock sample, and constant weight load is carried out to it, is unloaded
It carries.
Referring to Fig.1, the portal frame 10, lever loading mechanism 40, sample container system 20 are horizontally arranged at interval, respectively
Portal frame 10 connects to form whole frame by crossbar member, can carry out multigroup rock weathering, creep test simultaneously, significantly
Improve test efficiency.
With reference to Fig. 2 and Fig. 5, the lever loading mechanism 40 is articulated with the cross on 10 column 11 of portal frame including one end
Beam 41, the other end of crossbeam 41 and the sunpender 47 for carrying weights 48 are hinged, are hingedly set by bearing 43 on crossbeam 41
U-shaped movable ram 42 is set, U-shaped movable ram 42 is vertically acted on by solid cylindrical roller bearing 45, the arc groove cushion block 44 under it
In rock sample.With reference to Fig. 5, the axis pin for being horizontally through crossbeam 41 is installed, in the transverse direction of crossbeam 41 on 43 endoporus of the bearing
Respectively one amesdial 46 of setting, amesdial 46 are fixed on by Magnetic gauge stand on portal frame 10 for both sides, and measurement head contact is in pin
On axis, the vertical compressive deformation magnitude of rock sample is acquired by two amesdials 46.By lever loading mechanism 40 to rock sample
Apply and stablize vertical pressure, compared with traditional manual hydraulic jack load mode, weight linear meter thick stick on-load pressure will not be with rock
Stone sample deformation and there is the case where increasing or reducing, realize constant weight load.And compared with electrohydraulic servo-controlling system, add
It carries and experiment process control is very simple, equipment manufacturing cost is cheap, and can carry out several groups parallel test simultaneously, carries significantly
The high efficiency of creep test, and obtain more accurate test result.
With reference to Fig. 3 and Fig. 4, the sample container system 20 is set to the lower section of U-shaped movable ram 42, except to rock examination
Sample is formed outside the hole cylinder shape bucket 27 of sidewise restraint, further includes the quadrangle box 21 with upper end opening, the quadrangle box 21
Side wall on the air admission hole 24 that is connected with blower system 52 is set, interval is arranged on bottom wall is connected with water circulation system 51
Water injection hole 22, osculum 23.The bottom of quadrangle box 21 is from bottom to top sequentially placed rectangular heating plate 25, rectangular permeable stone
26.The hole cylinder shape bucket 27 is located on rectangular permeable stone 26, is inside from bottom to top sequentially placed lower round permeable stone
30, rock sample, upper round permeable stone 29 and circular steel cushion block 31 are arranged on the annular outer wall of hole cylinder shape bucket 27 with holes
Cylindrical heater plate 28.The heating device is made of rectangular heating plate 25 and hole cylinder shape heating plate 28.When experiment, arc
Shape slot cushion block 44 is positioned on circular steel cushion block 31, and the load of lever loading mechanism 40 is by U-shaped movable ram 42, filled circles
Cylindricality roller bearing 45, arc groove cushion block 44, circular steel cushion block 31 and upper round permeable stone 29 are applied to by sidewise restraint in circle with holes
On rock sample in cylindricality bucket 27.
The water circulation system 51 by the water filling into quadrangle box 21 of water injection hole 22, by osculum 23 by water from
It excludes, and is stored in water circulation system 51 in quadrangle box 21, used for wetting-drying test next time.
The blower system 52 can continue pumping normal temperature air and cold air, and coordinate in sample container system 20
Heating device (rectangular heating plate 25, hole cylinder shape heating plate 28) use.In dry rock specimen, air blast is opened
System 52 pumps normal temperature air into quadrangle box 21 by air admission hole 24, while opening heating device, and temperature is adjusted to try
Set temperature is tested, the air after heating is carried to be excluded from the vapor that rock sample evaporates from 21 top port of quadrangle box, is dried
Dry rock sample realizes the drying and watering cycle effect of rock sample.
The method for realizing the cold cycling of rock sample is, after the water in quadrangle box 21 is drained, opens heating device
Temperature is adjusted to experimental design high temperature values by (rectangular heating plate 25, hole cylinder shape heating plate 28), heat run design time,
It is then shut off heating device, while opening blower system 52 and cold air is persistently pumped into quadrangle box 21 by air admission hole 24,
Cooling rock sample.
Referring to Fig.1, a kind of simple rock weathering of the present invention, creep integration experimental rig test method, including it is as follows
Step：
1. cylindric rock sample is placed in drying in oven at least 24 hours to constant weight, drying temperature is 50 DEG C；
2. rock sample is placed in sample container system 20, by the circle with holes for being seated 21 middle position of quadrangle box
27 pairs of rock samples of cylindricality bucket provide sidewise restraint；
3. based on lever principle according to the vertical on-load pressure value of experimental design, by 48 quantity carry of required weights in
On sunpender 47, carry out stablizing constant weight vertically loading to rock sample；Two amesdials 46 are begun through from extension weights 48 to adopt
Collect the vertical compressive deformation magnitude of rock sample, it is primary every 10min records, until continuous 3 times record numerical value are constant；
4. carrying out drying and watering cycle slacking to rock sample, the water filling into quadrangle box 21 of water circulation system 51 is opened,
Until flooding the upper round permeable stone 29 at the top of rock sample, stopping water filling and impregnating rock sample 24 hours in water；It opens
Water circulation system 51 is opened to drain water from quadrangle box 21；It opens blower system 52 and pumps room temperature sky into quadrangle box 21
Gas, while heating device is opened, and temperature is adjusted to experiment set temperature, drying rock sample 24 hours；
5. carrying out cold cycling slacking to rock sample, the water in quadrangle box 21 is drained, opens heating dress
It sets, temperature is adjusted to experimental design high temperature values, rock sample is heated 24 hours, is then shut off heating device, while opening drum
Wind system 52 persistently pumps cold air, cooling rock sample 24 hours into quadrangle box 21；
6. according to experimental design, the drying and watering cycle of setting number is carried out to rock sample and cold cycling acts on；
7. after completing setting slacking test, continuing for two amesdials 46 of record and reading, until stabilization, stops
Experiment, removal weights 48 take out rock sample.
4. rock sample immersion starts the step in drying course neutralization procedure 5. rock heat and cooling procedure
When primary two amesdials 46 reading is recorded per 10min, if continuous 3 difference of readings are less than 0.001mm, it is primary to be changed to 1h records.
1. the step to experiment 7., carries out the parallel test of 4 identical rock samples, mean value is taken to make simultaneously every time
For test result.
It should be pointed out that the present invention a kind of simple rock weathering described above that only explains through diagrams, creep integration
Experimental rig and test method concrete structure and specific method, due to being for the those of ordinary skill in same technique field
It is easy to carry out several modifications and change on this basis.Therefore, this specification, which is not intended to invent, is confined to shown and institute
In the concrete structure and the scope of application stated, therefore every corresponding modification for being possible to be utilized and equivalent, belong to this hair
Bright apllied the scope of the claims.
Claims (9)
1. a kind of simple rock weathering, creep integration experimental rig, it is characterized in that：It includes sample container system (20), thick stick
Bar load maintainer (40), water circulation system (51) and blower system (52)；The sample container system (20), which has, tries rock
The hole cylinder shape that sample forms sidewise restraint bucket (27) and the heating device that is heated to rock sample, the water circulation system
(51) rock sample is humidified, the blower system (52) is dried and cools down to rock sample, keeps rock sample real
Existing drying and watering cycle and cold cycling；The lever loading mechanism (40) vertically acts on rock sample, it is carried out constant weight load,
Unloading.
2. a kind of simple rock weathering as described in claim 1, creep integration experimental rig, it is characterized in that：The lever
Load maintainer (40) includes the crossbeam (41) that one end is articulated on portal frame (10) column (11), the other end of crossbeam (41) with
Sunpender (47) for carry weights (48) is hinged, and U-shaped movable ram is hingedly arranged by bearing (43) on crossbeam (41)
(42), U-shaped movable ram (42) vertically acts on rock by solid cylindrical roller bearing (45), the arc groove cushion block (44) under it
Sample.
3. a kind of simple rock weathering as described in claim 1, creep integration experimental rig, it is characterized in that：The bearing
(43) axis pin for being horizontally through crossbeam (41) is installed on endoporus, one amesdial is respectively set in the both lateral sides of crossbeam (41)
(46), amesdial (46) is fixed on by Magnetic gauge stand on portal frame (10), and measurement head contact is on axis pin.
4. a kind of simple rock weathering as claimed in claim 2, creep integration experimental rig, it is characterized in that：The gate-type
Frame (10), lever loading mechanism (40), sample container system (20) are horizontally arranged at interval, and each portal frame (10) passes through cross bar
Component connects to form whole frame.
5. a kind of simple rock weathering as claimed in claim 2, creep integration experimental rig, it is characterized in that：The sample
Containment system (20) is set to the lower section of U-shaped movable ram (42), includes the quadrangle box (21) with upper end opening, this is rectangular
The air admission hole (24) being connected with blower system (52) is set on the side wall of box body (21), and interval is arranged and water cyclic system on bottom wall
Water injection hole (22), the osculum (23) that system (51) is connected.
6. a kind of simple rock weathering as claimed in claim 5, creep integration experimental rig, it is characterized in that：It is described rectangular
The bottom of box body (21) is from bottom to top sequentially placed rectangular heating plate (25), rectangular permeable stone (26)；The hole cylinder shape bucket
(27) it is located on rectangular permeable stone (26), is inside from bottom to top sequentially placed lower round permeable stone (30), rock sample, upper circle
Hole cylinder shape heating plate is arranged on the annular outer wall of hole cylinder shape bucket (27) for shape permeable stone (29) and circular steel cushion block (31)
(28)；The heating device is made of rectangular heating plate (25) and hole cylinder shape heating plate (28).
7. using a kind of simple rock weathering, the experiment of creep integration experimental rig as described in claim 1 to 7 any one
Method includes the following steps：
1. cylindric rock sample is placed in drying in oven at least 24 hours to constant weight, drying temperature is 50 DEG C；
2. rock sample is placed in sample container system (20), by the hole cylinder for being seated quadrangle box (21) middle position
Shape bucket (27) provides sidewise restraint to rock sample；
3. based on lever principle according to the vertical on-load pressure value of experimental design, by required weights (48) quantity carry in sunpender
On 47, carry out stablizing constant weight vertically loading to rock sample；Two amesdials (46) are begun through from extension weights (48) to adopt
Collect the vertical compressive deformation magnitude of rock sample, it is primary every 10min records, until continuous 3 times record numerical value are constant；
4. carrying out drying and watering cycle slacking to rock sample, water circulation system (51) is opened to quadrangle box (21) interior water filling,
Until flooding the upper round permeable stone (29) at the top of rock sample, stopping water filling and impregnating rock sample 24 hours in water；
Water circulation system (51) is opened to drain water from quadrangle box (21)；Open blower system (52) pump into quadrangle box (21)
Normal temperature air is sent, while opening heating device, and temperature is adjusted to experiment set temperature, drying rock sample 24 hours；
5. carrying out cold cycling slacking to rock sample, the water in quadrangle box (21) is drained, opens heating device, it will
Temperature is adjusted to experimental design high temperature values, is heated 24 hours to rock sample, then heating device, while opening blower system (52)
Cold air, cooling rock sample 24 hours are persistently pumped into quadrangle box (21)；
6. according to experimental design, the drying and watering cycle of setting number is carried out to rock sample and cold cycling acts on；
7. after completing setting slacking test, two amesdial (46) readings of record are continued for, until stabilization, stops examination
It tests, removal weights (48), takes out rock sample.
8. the test method of a kind of simple rock weathering as claimed in claim 7, creep integration experimental rig, it is characterized in that：
The step 4. rock sample immersion and drying course neutralization procedure 5. in rock heat and cooling procedure, per 10min when beginning
Primary two amesdials (46) reading is recorded, if continuous 3 difference of readings are less than 0.001mm, it is primary to be changed to 1h records.
9. the test method of a kind of simple rock weathering as claimed in claim 7, creep integration experimental rig, it is characterized in that：
1. the step to experiment 7., carries out the parallel test of 4 identical rock samples simultaneously every time, mean value is taken to be tied as experiment
Fruit.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758791A (en) * | 2021-08-03 | 2021-12-07 | 中国电建集团成都勘测设计研究院有限公司 | Method for determining mechanical parameters of rock |
| CN113970466A (en) * | 2021-09-23 | 2022-01-25 | 中国电建集团华东勘测设计研究院有限公司 | Device and method for manufacturing large-scale direct shear test sample of coarse-grained soil under action of on-site dry-wet cycle |
| CN116140335A (en) * | 2023-02-09 | 2023-05-23 | 昆明理工大学 | Method for strengthening coal gangue weathering to soil by utilizing medium-low temperature waste heat |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116140335A (en) * | 2023-02-09 | 2023-05-23 | 昆明理工大学 | Method for strengthening coal gangue weathering to soil by utilizing medium-low temperature waste heat |
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