CN105891014A - Rock and soil body shear rheometer giving consideration to dry-wet cyclic damage effect - Google Patents
Rock and soil body shear rheometer giving consideration to dry-wet cyclic damage effect Download PDFInfo
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- CN105891014A CN105891014A CN201610279213.1A CN201610279213A CN105891014A CN 105891014 A CN105891014 A CN 105891014A CN 201610279213 A CN201610279213 A CN 201610279213A CN 105891014 A CN105891014 A CN 105891014A
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0224—Thermal cycling
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention provides a rock and soil body shear rheometer giving consideration to a dry-wet cyclic damage effect. The rock and soil body shear rheometer comprises a shear unit, a temperature regulation control unit and a rainfall regulation control unit. The shear unit comprises a test stand, a normal jack, a shear jack, a left shear box, a right shear box and a sliding mechanism, wherein the left shear box and the right shear box are distributed in the X-axis direction and are opposite in opening, the normal jack is installed on the test stand in the X-axis direction and is connected with the right shear box, the shear jack is installed on the test stand in the Y-axis direction and is connected with the left shear box, and the sliding mechanism is installed on the left shear box and is in contact with the test stand. The temperature regulation control unit comprises an air electrical-heating wire, a temperature detection device and a fan. The rainfall regulation control unit comprises a water pump, a water inlet pipe and a spray head, wherein the water pump is installed on the water inlet pipe, and the spray head is installed on an outlet of the water inlet pipe. The rheometer utilizes the spray head and the air electrical-heating wire to simulate the rainfall process and drying process respectively and can perform a dry-wet cyclic damage test of a rock sample.
Description
Technical field
The present invention relates to a kind of Rock And Soil shear rheology instrument, be specifically related to a kind of Rock And Soil considering drying and watering cycle damage effect
Shear rheology instrument, belongs to Geotechnical Engineering field.
Background technology
Rock And Soil direct shear test is one of modal conventional mechanical test in Geological Engineering, is to obtain rock or structural plane is cut
Cutting the important means of mechanics parameter, the design of follow-up Geological Engineering and construction are all had important with precision by its result of the test
Directive significance.
The basic step that Rock And Soil is carried out direct shear test is: the Rock And Soil sample of field acquisition is processed into standard by (1)
Sample, is placed in specific shear box；(2) shear box being applied certain axial stress, the size of axial stress is general
Crustal stress size according to sampling site determines；(3) with certain loading speed applying shear stress on shear box,
And read the deformation values of rock sample, until rock sample destroys under certain one-level shear stress.
Existing Rock And Soil shearing test apparatus typically has following development trend: (1) is according to concrete engineer applied, design
Exploitation can be used for the boxshear apparatus of specific Rock And Soil, as being applied to the boxshear apparatus of Colophonium, gravelly soil, coarse-grained soil, frozen soil etc.；
(2) employ new technology new supplementary instrument, improve measuring accuracy, such as novel pressure instrument and deformation test technology etc.；(3)
Should for the impact of rock mechanical characteristic, such as height by various disturbance factors in laboratory test means simulating natural environment
Rock And Soil shearing test apparatus under the special environment such as power, low temperature.
Water is the most active factor of nature, studies it significant to the bad effect of Rock And Soil.Water is to rock
Model of action is varied, such as softening, chemical attack, washes away.It addition, for mine high slope, road and rail limit
For the Rock And Soil of slope, periodically rainfall and air drying process are a kind of fatigue damages to Rock And Soil throughout the year；For water
From the point of view of the reservoir stability of storehouse, periodic water-retention and draining also have for the Rock And Soil of reservoir stability falling zone and repeatedly weaken work
With.Therefore the research drying and watering cycle effect reduction rule to rock mechanical character, exploitation considers the Rock And Soil of dry and wet damage
Direct shear apparatus, significant for specific engineering slope stability study.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, and a kind of frame for movement novelty is provided, is prone to observation, side
Rock sample just carries out drying and watering cycle damage test, the small-sized Rock And Soil being applicable to soil and soft rock that deformation measurement precision is higher is cut
Cut flow graph.
Realizing the technical scheme that the object of the invention used is, a kind of Rock And Soil shear flow considering drying and watering cycle damage effect
Become instrument, at least include cut cells, cut cells be arranged above temperature regulation unit and rainfall regulation controls single
Unit；Described cut cells includes testing stand, normal direction jack, shears jack, left shear box, right shear box and slip
Mechanism, left shear box and right shear box are relative along X-direction distribution and opening, and normal direction jack is installed along X-direction
Be connected on testing stand and with right shear box, shear jack be installed on testing stand along Y direction and with left shearing
Box connects, and slide mechanism is installed on left shear box and contacts with testing stand；Described temperature regulation unit includes sky
Pneumoelectric heated filament, temperature-detecting device and fan, air heating wire and fan are mounted on above cut cells and all with left
Shear box is relative with right shear box；Described rainfall regulation unit includes water pump, water inlet pipe and shower nozzle, and water pump is installed on
On water inlet pipe, shower nozzle is installed in the outlet of water inlet pipe and is positioned at directly over left shear box and right shear box.
Described slide mechanism includes end roller group and sidewinders wheels, and end roller group and side wheel group are respectively arranged in left shear box
Bottom surface and left surface on.
Offering installation cavity along Y direction on described testing stand, end roller group is positioned in installation cavity, and testing stand offers
Two groups of chutes, end roller group and side wheel group lay respectively in two groups of chutes.
Described cut cells, temperature regulation unit and rainfall regulation unit are mounted in proof box, testing stand
Being fixed on the base bottom proof box, temperature regulation unit and rainfall regulation unit are mounted on proof box
On tank wall.
Described rainfall regulation unit also includes tank, filter and goes out the network of rivers, and tank is positioned at bottom proof box, water outlet
Net is installed on base and the opening of sealing flume upper end, and filter is positioned in tank and with the entrance of water inlet pipe even
Logical.
Effusion meter and flowing water Valve are installed on described water inlet pipe.
Described temperature-detecting device and air heating wire are mounted on the sidewall paneling of proof box, and fan is installed on proof box
On top board.
Proof box is provided with controller, the outer surface of proof box is provided with controller be electrically connected with touch display screen and
On and off switch, touches display screen and connects the input of controller, and air heating wire, fan and water pump are all connected with controller
Outfan, temperature-detecting device is temperature sensor, and temperature sensor connects the input of controller.
Being mounted on Pressure gauge and displacement transducer on normal direction jack and shearing jack, displacement transducer connects controller
Input.
The chamber door of proof box is provided with transparent windows.
As shown from the above technical solution, the Rock And Soil shear rheology instrument considering drying and watering cycle damage effect that the present invention provides,
Main body includes three funtion parts, 1, cut cells, rock sample is carried out shearing test, and very heavy including testing stand, normal direction
Top, shearing jack, left shear box, right shear box and slide mechanism, in the present invention, cut cells uses horizontally disposed,
Left shear box is relative along X-direction distribution and opening with right shear box, is respectively used to place dish and rock sample lower wall on rock sample,
Normal direction jack is installed on testing stand along X-direction and is connected with right shear box, is used for applying normal load, normal direction
The direction of load is along X-direction, and testing stand is counterforce device simultaneously, and loading for normal load provides counter-force, shears very heavy
Top is installed on testing stand along Y direction and is connected with left shear box, is used for applying shearing force, the edge, direction of shearing force
Y direction, slide mechanism is installed on left shear box and contacts with testing stand, and slide mechanism is in the Y-axis direction without about
Bundle, therefore slide mechanism is, along the displacement of Y direction, the deflection that rock sample is sheared；2, temperature regulation unit,
For rock sample is carried out drying and processing, including air heating wire, temperature-detecting device and fan, air heating wire and fan
Common effect, the drying temperature of regulation rock sample, the drying temperature of temperature-detecting device detection rock sample；3, rainfall regulation control
Unit processed, for carrying out saturated process to rock sample, with the environment that temperature regulation unit is collectively forming drying and watering cycle, bag
Including water pump, water inlet pipe and shower nozzle, shower nozzle is positioned at directly over left shear box and right shear box, the rainfall in simulating natural environment,
Thus rock sample is carried out saturated process.
For ensureing that device entirety is not disturbed by external environment, cut cells, temperature regulation unit and rainfall regulation control
Unit processed is mounted in proof box so that proof box is internal is and external environment isolation and the adjustable test of experimental condition
Environment；Rainfall regulation unit also includes tank, filter and goes out the network of rivers, and tank is positioned at bottom proof box, is used for receiving
Collection shower nozzle ejection and the water not absorbed by rock sample, go out the opening of sealing flume upper end, the network of rivers, filters residue water for preliminary
In impurity, filter is positioned in tank and connects with the entrance of water inlet pipe, the impurity in further filtering trough, water
Groove, water inlet pipe, shower nozzle form water circulation, using water wisely；Chamber door is provided with transparent windows, is used for observing drying and watering cycle
The state of rear rock sample and the process of failure by shear.
For guarantee test precision, proof box arrange controller and touches display screen, controlling Rock And Soil dry and wet by controller
Condition required for circulation, as dried temperature, rain time, rainfall size, the number of times etc. of drying and watering cycle, touches aobvious
Display screen is used for arranging the condition required for Rock And Soil drying and watering cycle, the temperature signal that controller collecting temperature sensor detects,
And compare with the design temperature touching display screen transmission, and then control air heating wire or fan operation, controller
Controlling operation time and then the regulation rain time of water pump, rainfall is by the effusion meter installed on water inlet pipe and flowing water Valve
Carry out showing and regulating.
Compared with prior art, the advantage of the Rock And Soil shear rheology instrument considering drying and watering cycle damage effect that the present invention provides
As follows:
(1), in the cut cells that the present invention provides, left shear box and right shear box are along X-direction distribution and opening phase
Right so that the required normal force applied of shearing test and shearing force complete the most in the horizontal plane, it is thus susceptible to rock sample is applied
Simulation Exposure to Sunlight and the experimental condition of rainfall, in order to carry out the shearing test after experience different drying and watering cycle damage, or carry out
Shearing test under different moisture state；
(2) the Rock And Soil shear rheology instrument frame for movement that the present invention provides is simple, can easily be accommodated, and utilizes shower nozzle, air
Heating wire respectively simulated rainfall and Exposure to Sunlight drying course, and easily controllable rainfall and dry temperature, conveniently carry out difference
Rock And Soil direct shear test under drying moistening cycle, research Rock And Soil shears the damage effect of mechanical characteristic, rainfall regulation control
Unit processed uses water circulation use, reduces experimentation cost；
(3) the Rock And Soil shear rheology instrument that the present invention provides has cheap, the feature of compact conformation, easy to operate,
It is applicable to Geotechnical Engineering type student and carries out the indoor direct shear test of the rock-soil materials such as soft rock, soil, structural plane.
Accompanying drawing explanation
The structural representation of the Rock And Soil shear rheology instrument considering drying and watering cycle damage effect that Fig. 1 provides for the present invention.
Wherein, 1-testing stand, roller group at the bottom of 2-, 3-sidewinders wheels, the left shear box of 4-, the right shear box of 5-, 6-normal direction thousand
Jin top, 7-shears jack, 8-water inlet pipe, 9-flowing water Valve, 10-shower nozzle, 11-proof box, 12-dead ring, 13-
Air heating wire, 14-touches display screen, 15-on and off switch, 16-water pump, 17-filter, and 18-goes out the network of rivers, and 19-is saturating
Bright observation window, 20-chamber door, 21-chute, 22-fan, 23-temperature sensor, 24-effusion meter, 25-tank, 26-
Base, 27-installation cavity.
Detailed description of the invention
Illustrating the present invention in detail with embodiment below in conjunction with the accompanying drawings, present disclosure is not limited to following reality
Execute example.
The Rock And Soil shear rheology instrument considering drying and watering cycle damage effect that the present invention provides, its structure is as it is shown in figure 1, wrap
Including cut cells, temperature regulation unit, rainfall regulation unit and proof box 11, cut cells, temperature regulate
Control unit and rainfall regulation unit are mounted in proof box 11, and cut cells is positioned at the bottom of proof box 11,
Temperature regulation unit and rainfall regulation unit are mounted on the tank wall of proof box 11 and are positioned at cut cells
Top, the chamber door 20 of proof box 11 is provided with transparent windows 19；
Described cut cells includes testing stand 1, normal direction jack 6, shears jack 7, left shear box 4, right shear box
5 and slide mechanism, testing stand 1 is fixed on the base 26 bottom proof box, and left shear box 4 and right shear box 5 are along X
Direction of principal axis distribution and opening are relative, normal direction jack 6 be installed on testing stand 1 along X-direction and with right shear box
5 connect, and shear jack 7 and are installed on testing stand 1 along Y direction and are connected with left shear box 4, and normal direction is very heavy
Being mounted on Pressure gauge and displacement transducer on top 6 and shearing jack 7, slide mechanism is installed on left shear box 4 also
And contact with testing stand 1, slide mechanism includes end roller group 2 and sidewinders wheels 3, end roller group 2 and sidewinder wheels 3
It is respectively arranged on bottom surface and the left surface of left shear box 4, testing stand 1 offers installation cavity 27, the end along Y direction
Roller group 2 is positioned in installation cavity 27, and testing stand 1 offers two groups of chutes 21, end roller group 2 and sidewinder wheels 3
Lay respectively in two groups of chutes 21；
Described temperature regulation unit includes air heating wire 13, temperature sensor 23 and fan 22, temperature sensor
23 are directly mounted on the sidewall paneling of proof box, and air heating wire 13 is installed on the sidewall paneling of proof box by dead ring 12
Upper and relative with left shear box 4 and right shear box 5, fan be installed on the top board of proof box and with left shear box 4
Relative with right shear box 5；
Described rainfall regulation unit includes water pump 16, water inlet pipe 8, shower nozzle 10, tank 25, filter 17 and goes out
The network of rivers 18, water pump 16 is installed on water inlet pipe 8, and shower nozzle 10 is installed in the outlet of water inlet pipe 8 and is positioned at left shearing
Directly over box 4 and right shear box 5, tank 25 is positioned at bottom proof box, goes out the network of rivers 18 and is installed on base and closes
The opening of tank upper end, filter 17 is positioned in tank 25 and connects with the entrance of water inlet pipe 8, and water inlet pipe 8 is pacified
Equipped with effusion meter 24 and flowing water Valve 9, the valve of flowing water Valve preferably band regulation handle；
Being provided with controller in proof box, controller is packaged in the inside of proof box tank wall, and the outer surface of proof box is provided with
The touch display screen 14 being electrically connected with controller and on and off switch 15, temperature sensor 23, touch display screen 14 and
Displacement transducer is all connected with the input of controller, and air heating wire, fan and water pump are all connected with the outfan of controller.
The operational approach using this Rock And Soil shear rheology instrument to carry out direct shear test is as follows:
1, direct shear test: two shear boxs are arranged along about X-direction, carries out direct shear test in the Y-axis direction；
During direct shear test, after rock sample is placed in shear box, the normal direction jack being connected by right shear box is applied
The axial stress of level certain one-level size to the left, when Pressure gauge numerical stability, then in the front of left shear box, passes through
Shearing jack and slowly apply shear stress, its shear stress size should be gradually increased, last until sample destroys, test
Process terminates, axial stress, shear stress and the size of sample relative displacement that overall process record applies.
2, the direct shear test under drying and watering cycle effect:
First pass through touch display screen and set certain drying temperature and drying time, and control air electric heating by controller
The fever time of silk and the size of heating temp, temperature sensor the real time temperature signal in case is sent to controller and
Showing and touching on display screen, fan reduces test the temperature inside the box when temperature is too high, with air heating wire cooperatively
Regulation test the temperature inside the box；
After sample drying, send order by touching display screen, control pump working, current through water inlet pipe, effusion meter,
Flowing water Valve, shower nozzle, apply certain rainfall to sample, and controller controls the time rained, and wherein effusion meter can be added up
The water yield passed through, the handle of rotary water-out valve makes flowing water Valve control the size of rainfall, waits the rainfall reaching set
Rear stopping is sprayed water；
Repeat front two tasks, several times after circulation, temperature be set in the temperature value that simulation is extraneous, finally carry out as
On direct shear test, study and obtain under drying and watering cycle effect the deterioration rule to Rock And Soil physical property.
Claims (10)
1. consider a Rock And Soil shear rheology instrument for drying and watering cycle damage effect, at least include cut cells, its feature
Be: cut cells be arranged above temperature regulation unit and rainfall regulation unit；Described cut cells bag
Include testing stand, normal direction jack, shear jack, left shear box, right shear box and slide mechanism, left shear box and the right side
Shear box is relative along X-direction distribution and opening, normal direction jack be installed on testing stand along X-direction and with the right side
Shear box connects, and shears jack and is installed on testing stand along Y direction and is connected with left shear box, and slide mechanism is pacified
It is loaded on left shear box and contacts with testing stand；Described temperature regulation unit includes air heating wire, temperature detection
Device and fan, air heating wire and fan be mounted on above cut cells and all with left shear box and right shear box phase
Right；Described rainfall regulation unit includes water pump, water inlet pipe and shower nozzle, and water pump is installed on water inlet pipe, and shower nozzle is installed
In the outlet of water inlet pipe and be positioned at directly over left shear box and right shear box.
The Rock And Soil shear rheology instrument of consideration drying and watering cycle damage effect the most according to claim 1, its feature exists
In: described slide mechanism includes end roller group and sidewinders wheels, and end roller group and side wheel group are respectively arranged in left shear box
Bottom surface and left surface on.
The Rock And Soil shear rheology instrument of consideration drying and watering cycle damage effect the most according to claim 2, its feature exists
In: offering installation cavity along Y direction on described testing stand, end roller group is positioned in installation cavity, and testing stand offers
Two groups of chutes, end roller group and side wheel group lay respectively in two groups of chutes.
The Rock And Soil shear rheology instrument of consideration drying and watering cycle damage effect the most according to claim 1, its feature exists
In: described cut cells, temperature regulation unit and rainfall regulation unit are mounted in proof box, testing stand
Being fixed on the base bottom proof box, temperature regulation unit and rainfall regulation unit are mounted on proof box
On tank wall.
The Rock And Soil shear rheology instrument of consideration drying and watering cycle damage effect the most according to claim 4, its feature exists
In: described rainfall regulation unit also includes tank, filter and goes out the network of rivers, and tank is positioned at bottom proof box, water outlet
Net is installed on base and the opening of sealing flume upper end, and filter is positioned in tank and with the entrance of water inlet pipe even
Logical.
The Rock And Soil shear rheology instrument of consideration drying and watering cycle damage effect the most according to claim 5, its feature exists
In: effusion meter and flowing water Valve are installed on described water inlet pipe.
The Rock And Soil shear rheology instrument of consideration drying and watering cycle damage effect the most according to claim 4, its feature exists
In: described temperature-detecting device and air heating wire are mounted on the sidewall paneling of proof box, and fan is installed on proof box
On top board.
The Rock And Soil shear rheology instrument of consideration drying and watering cycle damage effect the most according to claim 4, its feature exists
In: proof box is provided with controller, the outer surface of proof box is provided with controller be electrically connected with touch display screen and
On and off switch, touches display screen and connects the input of controller, and air heating wire, fan and water pump are all connected with controller
Outfan, temperature-detecting device is temperature sensor, and temperature sensor connects the input of controller.
The Rock And Soil shear rheology instrument of consideration drying and watering cycle damage effect the most according to claim 8, its feature exists
In: being mounted on Pressure gauge and displacement transducer on normal direction jack and shearing jack, displacement transducer connects controller
Input.
The Rock And Soil shear rheology instrument of consideration drying and watering cycle damage effect the most according to claim 4, its feature exists
In: the chamber door of proof box is provided with transparent windows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610279213.1A CN105891014B (en) | 2016-04-29 | 2016-04-29 | A kind of Rock And Soil shear rheology instrument considering drying and watering cycle damage effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610279213.1A CN105891014B (en) | 2016-04-29 | 2016-04-29 | A kind of Rock And Soil shear rheology instrument considering drying and watering cycle damage effect |
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| CN105891014A true CN105891014A (en) | 2016-08-24 |
| CN105891014B CN105891014B (en) | 2019-01-01 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771079A (en) * | 2017-01-10 | 2017-05-31 | 中国地质大学（武汉） | A kind of soft rock shear rheology instrument for realizing drying and watering cycle and energetic disturbance |
| CN109342229A (en) * | 2018-08-27 | 2019-02-15 | 青岛理工大学 | Mechanical property testing device and method for electrochemically improved soil under dry-wet circulation action |
| CN110779811A (en) * | 2019-10-25 | 2020-02-11 | 武汉科技大学 | Rainfall seepage and blasting vibration coupling simulation soft rock shear rheology test system |
| CN111521755A (en) * | 2020-04-29 | 2020-08-11 | 中铁第四勘察设计院集团有限公司 | Testing device and testing method for research on single-side water-soaking disintegration characteristics of mudstone |
| CN112504872A (en) * | 2020-11-19 | 2021-03-16 | 贵州省水利水电勘测设计研究院有限公司 | Rock structural surface shearing creep device capable of realizing dry-wet circulation |
| CN112665947A (en) * | 2021-01-13 | 2021-04-16 | 中国科学院西北生态环境资源研究院 | Acoustic monitoring device and method for rock damage in freeze-thaw-dry-wet environment |
| CN114544387A (en) * | 2022-01-10 | 2022-05-27 | 广城建设集团有限公司 | Dry-wet cycle test device with oblique shear test function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771079A (en) * | 2017-01-10 | 2017-05-31 | 中国地质大学（武汉） | A kind of soft rock shear rheology instrument for realizing drying and watering cycle and energetic disturbance |
| CN109342229A (en) * | 2018-08-27 | 2019-02-15 | 青岛理工大学 | Mechanical property testing device and method for electrochemically improved soil under dry-wet circulation action |
| CN110779811A (en) * | 2019-10-25 | 2020-02-11 | 武汉科技大学 | Rainfall seepage and blasting vibration coupling simulation soft rock shear rheology test system |
| CN110779811B (en) * | 2019-10-25 | 2020-10-30 | 武汉科技大学 | Rainfall seepage and blasting vibration coupling simulation soft rock shear rheology test system |
| CN111521755A (en) * | 2020-04-29 | 2020-08-11 | 中铁第四勘察设计院集团有限公司 | Testing device and testing method for research on single-side water-soaking disintegration characteristics of mudstone |
| CN112504872A (en) * | 2020-11-19 | 2021-03-16 | 贵州省水利水电勘测设计研究院有限公司 | Rock structural surface shearing creep device capable of realizing dry-wet circulation |
| CN112665947A (en) * | 2021-01-13 | 2021-04-16 | 中国科学院西北生态环境资源研究院 | Acoustic monitoring device and method for rock damage in freeze-thaw-dry-wet environment |
| CN112665947B (en) * | 2021-01-13 | 2022-12-20 | 中国科学院西北生态环境资源研究院 | Acoustic monitoring device and method for rock damage in freeze-thaw-dry-wet environment |
| CN114544387A (en) * | 2022-01-10 | 2022-05-27 | 广城建设集团有限公司 | Dry-wet cycle test device with oblique shear test function |
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| CN105891014B (en) | 2019-01-01 |
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