CN108333008A - A kind of experimental rig and method for making more cracks and regulating and controlling crack arrangement mode - Google Patents
A kind of experimental rig and method for making more cracks and regulating and controlling crack arrangement mode Download PDFInfo
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- CN108333008A CN108333008A CN201810074690.3A CN201810074690A CN108333008A CN 108333008 A CN108333008 A CN 108333008A CN 201810074690 A CN201810074690 A CN 201810074690A CN 108333008 A CN108333008 A CN 108333008A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
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Abstract
The invention discloses a kind of experimental rigs and method for making more cracks and regulating and controlling crack arrangement mode, for single test device, it solves the problems, such as that the prefabricated quantity through crack and spatial arrangement mode can not be changed at any time in the prior art, there is wide applicability and flexibility to the making through crack, can meet the needs of different experiments scheme simultaneously, reduce the cost of experiment equipment to a certain extent；The present invention is embedded in using banded plasticine on the surface of pedestal, the time-consuming problem of experimental rig later stage cleaning is efficiently solved, in addition, the small holes reserved on the side plate of experimental provision can carry out the experiment of crack water filling.
Description
Technical field
The present invention relates to standard cement mortar specimens can be made through the prefabricated experimental rig in crack more particularly to one kind it is multiple
Through crack and the experimental rig of controllable arrangement mode, belong to geomaterial field.
Background technology
Since reform and opening-up, as the industries such as China's mining, water conservancy, the energy and national defence continue to develop, large-scale ground underground
The exploitation of engineering is also increased, however, the rock stratum residing for underground engineering is there is structural planes such as crack, joint, tomographies, these
The presence of structural plane brings the factors of instability to the safety of underground engineering, therefore, for underground engineering, research
Crack propagation mechanism has important directive significance and actual demand.
Laboratory test is to study one of the effective means of crack rock mechanical property and crack propagation mechanism, domestic at present main
What is carried out is the research for running through crack and three-dimensional built-in crack about two dimension, for three-dimensional built-in crack, built-in crack
Crack initiation angle and crack extending length is inconvenient intuitive measures, the phenomenon that secondary crack propagation, does not also occur, therefore often carries out two dimension
Through crack laboratory test research, but for each fixed experimental provision, pour the crack quantity that is formed when test specimen and
The space layout in crack is fixed, once experimental program is slightly changed, it will cause cannot be satisfied the more cracks of testing program
The predicament of making and the requirement of different spaces arrangement.
Therefore, it is necessary to carry out new research and design to the prefabricated experimental rig through crack.
Invention content
For overcome the deficiencies in the prior art, the present invention provides one kind can making more cracks and controllable crevice space
The experimental rig of arrangement, the bottom plate and side plate of the device, side plate carry out precisely contraposition by bolt with positioning slit device and connect
It connects, using fixed riveting between partition board and side plate, so as to form overall assembled structure, the fixation positioned in slit device is split
Gap component achievees the purpose that adjust the spacing between crack by the movement on guide rail.
In order to achieve the above object, the present invention adopts the following technical scheme that：：
A kind of experimental rig for making more cracks and regulating and controlling crack arrangement mode, including test specimen building mortion and positioning are split
Gap device；The test specimen building mortion includes a rectangular frame encircled a city by bottom plate and multiple side plates, in the rectangle frame
It is equipped with multiple partition boards in frame, frame is divided into multiple spaces, positioning slit device is equipped in each space；The positioning
Slit device includes the guide rail being mounted at the top of rectangular frame, and being equipped on the guide rail can split along the fixation that it slidably reciprocates
Gap component, the fixation crack component are equipped with a plurality of different crack, vertical in the crack to be fitted with shear-steel
Ruler, the positioning slit device upright projection region on the inside of the bottom plate are equipped with groove, plasticine have been disposed in the groove, so as to
It is attached across the band shear-steel ruler of positioning slit device.
Further, the bottom plate refers to one piece of rectangular steel plates, the side that bottom plate is connected with side plate have 2 it is threaded
Hole, bottom plate and side plate carry out preliminary vertically-mounted connection by the form of fixed riveting before this in space layout, then with
Side plate is bolted.
Further, the groove energy that fluted, described plasticine can be reserved just with bottom plate is reserved on the bottom plate
Enough fit closely.
Further, the plasticine refers to slightly larger than the band cuboid plasticine of positioning slit device upright projection
Block.
Further, it is described with shear-steel ruler refer to the side band sword being connected with bottom plate and its thickness can pass through just it is solid
Determine crack component.
Further, the side plate refers to rectangular steel plates with groove, the side of side plate and bottom plate and positioning slit device
There is threaded hole, the lateral dimension that groove size is slightly larger than side plate and partition board is reserved on the inside of bottom plate, fixed riveting can be passed through
It connects and carries out vertical connection with it.
Further, the partition board refers to the rectangular steel plates that the 2 pieces of test specimens that will be poured are split and constrain, outboard partition
On reserved small holes；If you need to carry out water injection test to prefabricated crack, cylindrical small iron prop can be allowed to wear before test specimen pours
Cross the water filling duct that hole formation carries out crack water injection test.
Further, the crack fixation kit refers to being equipped with the rectangle plate that different angle runs through crack in centre bit,
The crack of crack fixation kit is respectively 30 °, 45 °, 60 ° and 120 °, 135 °, 150 ° with horizontal angle in its plane,
The geometric dimension in six cracks is identical, and its center intersects at same point；The width in crack is slightly larger than the thickness with shear-steel ruler,
It can be penetrated into just by this crack in the plasticine of bottom plate with shear-steel ruler.
Further, the guide rail refers to that a pair is arranged symmetrically and the graduated L-type steel in side, the both sides of L-type steel
It is divided into long side and short side, is bonded with fixed crack component bottom plane on the inside of short side, the upper top surface of short side both ends and side plate is detachable
Connection；The side of long side and the side of fixed crack component fit closely.Fixed crack component can be on guide rail according to graduated scale
It is free to travel to designated position, guide rail is fixed on test specimen building mortion at this time, and is split fixation by the long side of guide rail
Gap component clamps.
The present invention also provides for example a kind of experimental rig operations making more cracks and controllable crevice space arrangement
Method is as follows：
First, plasticine is closely embedded in the reserved groove of bottom plate, and concordant with the inner surface of bottom plate, is then passed through
Bottom plate and side plate are carried out preliminary fixing and riveted by the reserved groove of side plate, wait for that test specimen building mortion has certain globality
Afterwards, then by the reserved screw thread hole in side plate side and bottom panel side it is bolted；
Second, the upper side of partition board is beaten, it is made one by one to be caught in along the vertical groove that side plate is reserved, until downside
It is bonded with the medial surface of bottom plate；
Guide rail is first placed near the reserved screw thread hole in side plate upper surface by third, and fixed crack component can be according to leading
The scale of rail lateral surface is moved to the specified position of test requirements document, is then bolted at guide rail short side both ends with side plate,
It, also will fixed crack component while guide rail is fixed since the distance between two bolts hole are slightly smaller than the width in fixed crack
It is clamped positioning；
4th, the crack of fixed crack component will be passed through with shear-steel ruler and is tightly pierced into the plasticine of bottom plate, then
Test specimen forming is can be carried out to pour.
Beneficial effects of the present invention are as follows：
For traditional fabrication is through the single test device in crack, each experimental provision it is prefabricated through crack
Quantity and spatial arrangement mode be it is changeless, and the testing program for generally relating to crack usually will pass through crack quantity and
Spatial arrangement mode is studied as variable, therefore needs to make different crack quantity and spatial arrangement mode during experiment
Experimental rig, high test equipment cost will be caused in this way.The present invention is in order to solve at any time change in the prior art
The problem of becoming the prefabricated quantity through crack and spatial arrangement mode, by the way that guide rail is arranged, enable fixed crack component along
Guide rail moves freely, and the position of different fixed crack components represents the different positions for running through crack, so as to according to reality
Proved recipe case demand changes the spatial arrangement mode and quantity through crack at any time：Guide rail side indicates scale, fixed fracture set
The position that part can be specified according to the digital accurate movement on graduated scale to testing program, realizes in testing program and runs through crack not
The function of isospace arrangement；Crack component is fixed in test specimen process of vibrating in order to prevent to move, guide rail is connected by bolt
Will produce the power on the inside of being directed toward after connecing makes its crack component that is fixedly clamped, since what the present invention made runs through crack with extensive
Applicability and flexibility can meet the needs of different experiments scheme, reduce the cost of experiment equipment to a certain extent simultaneously.
The present invention is embedded in using banded plasticine on the surface of pedestal, and the cleaning of experimental rig later stage is efficiently solved
Time-consuming problem；Specifically, the present invention by glue by plasticine bottom and groove adhesion.If bottom plate directly formed
Be connected between crack and steel ruler, it is to be tested finish after, cleaning floor crack remaining cement mortar the time is expended into pole, in addition,
When vibrating cement mortar, due to the presence of floor crack, the loss of cement mortar can be caused, intensity after specimen molding is generated
It influences, therefore the present invention is solved the problems, such as using plasticine floor crack spacing present on；In addition, the process vibrated in test specimen
In must fix formed with shear-steel ruler it is stable run through crack, while must will be extracted with shear-steel ruler before test specimen initial set from
And formed and run through crack, and the position of crack component and quantity are fixed in experimentation to change according to requirement of experiment, this
Allowing for the other end of the bottom plate fixation with shear-steel ruler becomes abnormal difficult, and the present invention is embedded in by using banded plasticine
On the surface of pedestal, how the spatial arrangement for no matter fixing crack component changes, as long as the upright projection of guide rail is fallen in plasticine
In, band shear-steel ruler just can be tightly inserted into plasticine, will easily can also be extracted with shear-steel ruler after test specimen initial set, effectively be solved
Problem above.
The small holes reserved on the side plate of the experimental provision of the present invention can carry out the experiment of crack water filling according to experiment demand.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is apparatus of the present invention overall appearance schematic diagram；
Fig. 2 is positioning slit device schematic diagram；
Wherein：1. bottom plate, 2. side plates, 3. partition boards, 4. guide rails, 5. band shear-steel rulers, 6. fix crack component, 7. band rubbers
Mud.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, what the current country was substantially carried out is split through crack and three-dimensional built-in about two dimension
The research of gap, for three-dimensional built-in crack, the crack initiation angle of built-in crack and the inconvenient intuitive measurement of crack extending length are secondary
The phenomenon that crack propagation, does not also occur, therefore often carries out two dimension and run through crack laboratory test research, but for each fixed reality
For experiment device, the space layout for pouring the crack quantity and crack that are formed when test specimen is fixed, once experimental program omits
There is change, it will cause the predicaments that cannot be satisfied the requirement that the more cracks of testing program make and different spaces are arranged, in order to solve
Technical problem as above, present applicant proposes in a kind of Rock soil similar material test specimen made containing more cracks and controllable test specimen
The experimental rig and method of crack arrangement mode.
In a kind of typical embodiment of the application, as shown in Figure 1, one kind of the present invention can make more cracks and adjustable
Controlling the experimental rig that crevice space is arranged includes：Mainly by bottom plate 1, side plate 2, partition board 3, guide rail 4, band shear-steel ruler 5 and fixation
Crack component 6 forms.Bottom plate 1, side plate 2 and partition board 3 constitute test specimen building mortion；Guide rail 4, band shear-steel ruler 5, fixed fracture set
Part 6 and band plasticine 7 constitute positioning slit device.
In order to which demoulding is convenient after solidification for cement mortar specimen, the present invention before each component of experimental provision assembles,
Transparent adhesive tape is laid with one layer in the inside of bottom plate 1, side plate 2 and partition board 3, to ensure medial surface flat smooth.
The bottom plate 1 is made of one piece of thickness of the rectangular steel plates of 18-20mm, and bottom plate 1 is in 4 upright projection position of inboard track
It sets and is provided with the identical groove of a pair of of size, the depth of groove is about 8-10mm, and band plasticine 7 is closely inlayed by glue
In groove, upper surface is concordant with baseplate inner surface.
The inside of the side plate 2 is reserved fluted, is carried out with bottom plate 1 and partition board 3 by way of fixed rivet tentatively vertical
Assembly connection makes test specimen building mortion have certain globality；The reserved screw thread hole in 2 side of side plate and 1 side of bottom plate
Axle center is on the same line on spatial position, and pore diameter size is consistent, can be connected by bolted connection
It connects, and then partition board 3 is made tightly to stick into 2 groove of side plate；The reserved screw thread hole in 2 top surface of side plate and 4 short side both ends of guide rail are reserved
Screw thread hole be attached reinforcing again by bolt.
The guide rail 4 is spatially arranged symmetrically by a pair and is in the L-type steel in same level and formed, and passes through spiral shell
A pair of of L-type steel inside horizontal distance after bolt is fixed can be such that fixed crack component 6 is moved back along L-type steel short side direction just
Dynamic, the lateral surface of guide rail 4 indicates scale, the demand according to different tests scheme to crack spatial arrangement spacing, can be according to scale
Fixed crack component 6 is accurately positioned.
There is different angle to run through crack, the geometric dimension phase in crack on the central symmetry position of the fixed crack component 6
Together, and its center intersects at same point；The width in crack is slightly larger than the thickness with shear-steel ruler 5, since fixed crack component 6 hangs down
It delivers directly shadow to fall in band plasticine, can vertically penetrate into the band plasticine 6 of bottom plate by this crack just with shear-steel ruler
In.
The present invention it is a kind of make more cracks and controllable crevice space arrangement experimental rig operating method be：First
Band plasticine 7 is closely embedded in by glue in the reserved groove of bottom plate 1, and concordant with the inner surface of bottom plate 1, is then led to
It crosses the reserved groove of side plate 2 and bottom plate 1 and side plate 2 is carried out to preliminary fixed riveting, wait for that test specimen building mortion has centainly whole
After body, then it is bolted by the reserved screw thread hole in 2 side of side plate and 1 side of bottom plate；Second step is beaten with nail hammer
The upper side of partition board 3 makes it be one by one caught in wherein along the vertical groove that side plate 2 is reserved, until downside and bottom plate 1 is interior
Side is bonded；Third walks, and first guide rail 4 is placed near the reserved screw thread hole in 2 upper surface of side plate, and fixed crack component 6 can
It is moved to the specified position of test requirements document according to the scale of 4 lateral surface of guide rail, then carries out at 4 short side both ends of guide rail with side plate 2
It is bolted, since the distance between two bolts hole are slightly smaller than the width in fixed crack, will also consolidate while guide rail 4 is fixed
Determine crack component 6 and is clamped positioning；4th step will pass through the crack of fixed crack component 6 with shear-steel ruler 5 and tightly be pierced into
In the band plasticine 7 of bottom plate 1, it then can be carried out test specimen forming and pour.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of experimental rig for making more cracks and regulating and controlling crack arrangement mode, which is characterized in that including test specimen at shape dress
Set and position slit device；The test specimen building mortion includes a rectangular frame encircled a city by bottom plate and multiple side plates, in institute
It is equipped with multiple partition boards in the rectangular frame stated, frame is divided into multiple spaces, positioning slit device is equipped in each space；
The positioning slit device includes the guide rail being mounted at the top of rectangular frame, is equipped with and can back and forth be slided along it on the guide rail
Dynamic fixation crack component, the fixation crack component are equipped with a plurality of different crack, vertical in the crack to insert
Equipped with band shear-steel ruler, the positioning slit device upright projection region on the inside of the bottom plate is equipped with groove, is disposed in the groove
Plasticine, to be attached across the band shear-steel ruler of positioning slit device.
2. more cracks can be made as described in claim 1 and regulate and control the experimental rig of crack arrangement mode, which is characterized in that institute
It refers to one piece of rectangular steel plates to state bottom plate, and the side that bottom plate is connected with side plate has multiple threaded holes, bottom plate to exist with side plate
Preliminary vertically-mounted connection is carried out by the form of fixed riveting before this in space layout, is then bolted with side plate.
3. more cracks can be made as described in claim 1 and regulate and control the experimental rig of crack arrangement mode, which is characterized in that institute
State plasticine refers to slightly larger than the band cuboid rubber clod of positioning slit device upright projection.
4. more cracks can be made as described in claim 1 and regulate and control the experimental rig of crack arrangement mode, which is characterized in that institute
It refers to the side band sword being connected with bottom plate with shear-steel ruler to state and its thickness can pass through fixed crack component just.
5. more cracks can be made as described in claim 1 and regulate and control the experimental rig of crack arrangement mode, which is characterized in that institute
It refers to rectangular steel plates with groove to state side plate, and side plate has threaded hole, bottom with bottom plate and the side for positioning slit device
The lateral dimension that groove size is slightly larger than side plate and partition board is reserved on the inside of plate, can carry out vertical connection with it by fixed riveting.
6. more cracks can be made as described in claim 1 and regulate and control the experimental rig of crack arrangement mode, which is characterized in that institute
It refers to the rectangular steel plates that the test specimen that will be poured is split and constrains to state partition board, and small holes have been reserved on outboard partition, is being carried out
When water injection test, the small holes are as water filling hole.
7. more cracks can be made as described in claim 1 and regulate and control the experimental rig of crack arrangement mode, which is characterized in that institute
It refers to being equipped with the rectangle plate that different angle runs through crack in centre bit to state crack fixation kit, and the crack of crack fixation kit exists
In its plane and horizontal angle is respectively 30 °, 45 °, 60 ° and 120 °, 135 °, 150 °, the geometric dimension phase in six cracks
Together, and its center intersects at same point；The width in crack is slightly larger than the thickness with shear-steel ruler, and band shear-steel ruler can pass through just
This crack penetrates into the plasticine of bottom plate.
8. more cracks can be made as described in claim 1 and regulate and control the experimental rig of crack arrangement mode, which is characterized in that institute
It refers to that a pair is arranged symmetrically and the graduated L-type steel in side, the both sides of L-type steel are divided into long side and short side, short side to state guide rail
Inside is bonded with fixed crack component bottom plane, and the upper top surface of short side both ends and side plate is detachably connected；The side of long side with it is solid
The side for determining crack component fits closely.
9. more cracks can be made as claimed in claim 8 and regulate and control the experimental rig of crack arrangement mode, which is characterized in that institute
Designated position can be free to travel on guide rail according to graduated scale by stating fixed crack component, and guide rail is fixed on test specimen building mortion
On, and clamped fixed crack component by the long side of guide rail.
10. the operating method of the experimental rig for making more cracks and regulating and controlling crack arrangement mode as described in claim 1-9,
It is characterized in that,
First, plasticine is closely embedded in the reserved groove of bottom plate, and concordant with the inner surface of bottom plate, then passes through side plate
Bottom plate and side plate are carried out preliminary fixed riveting by reserved groove, after having certain globality after test specimen building mortion, then
It is bolted by the reserved screw thread hole in side plate side and bottom panel side；
Second, the upper side of partition board is beaten, it is made one by one to be caught in along the vertical groove that side plate is reserved, until downside and bottom
The medial surface of plate is bonded；
Guide rail is first placed near the reserved screw thread hole in side plate upper surface by third, and fixed crack component can be according to outside guide rail
The scale of side is moved to the specified position of test requirements document, is then bolted at guide rail short side both ends with side plate, due to
The distance between two bolts hole are slightly smaller than the width in fixed crack, also carry out fixed crack component while guide rail is fixed
Clamping and positioning；
4th, the crack of fixed crack component will be passed through with shear-steel ruler and is tightly pierced into the plasticine of bottom plate, with that may be used
It is poured with carrying out test specimen forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810074690.3A CN108333008A (en) | 2018-01-25 | 2018-01-25 | A kind of experimental rig and method for making more cracks and regulating and controlling crack arrangement mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810074690.3A CN108333008A (en) | 2018-01-25 | 2018-01-25 | A kind of experimental rig and method for making more cracks and regulating and controlling crack arrangement mode |
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| Publication Number | Publication Date |
|---|---|
| CN108333008A true CN108333008A (en) | 2018-07-27 |
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ID=62926020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810074690.3A Pending CN108333008A (en) | 2018-01-25 | 2018-01-25 | A kind of experimental rig and method for making more cracks and regulating and controlling crack arrangement mode |
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| CN (1) | CN108333008A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113203617A (en) * | 2021-06-23 | 2021-08-03 | 重庆大学 | Fractured rock mass test piece sample preparation mold and sample preparation method thereof |
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| CN113203617A (en) * | 2021-06-23 | 2021-08-03 | 重庆大学 | Fractured rock mass test piece sample preparation mold and sample preparation method thereof |
| CN113203617B (en) * | 2021-06-23 | 2024-05-24 | 重庆大学 | Sample preparation mold and sample preparation method for fractured rock mass test piece |
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