CN108775855A - The measuring device of through-hole hoop strain during a kind of static crushing - Google Patents
The measuring device of through-hole hoop strain during a kind of static crushing Download PDFInfo
- Publication number
- CN108775855A CN108775855A CN201810777469.4A CN201810777469A CN108775855A CN 108775855 A CN108775855 A CN 108775855A CN 201810777469 A CN201810777469 A CN 201810777469A CN 108775855 A CN108775855 A CN 108775855A
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- China
- Prior art keywords
- sheet metal
- blasthole
- hoop strain
- amesdial
- measuring device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
Abstract
The present invention proposes a kind of measuring device of through-hole hoop strain during static crushing, belongs to static crushing and removes rock or technical field of concrete, more particularly to a kind of measuring device of through-hole hoop strain during static crushing.Solve the problems, such as that static breaking agent exothermic heat of reaction causes measurement result bigger than normal.It includes sensor and sheet metal.It is mainly used for the measurement of through-hole hoop strain during static crushing.
Description
Technical field
The invention belongs to static crushings to remove rock or technical field of concrete, more particularly to a kind of static crushing process
The measuring device of middle through-hole hoop strain.
Background technology
Static crushing technology is by the way that blasthole is arranged in rock or inside concrete, and filling static breaking agent simultaneously expands, into
And reach the method for being crushed under the conditions of without friction, noiseless or cutting rock or concrete.
Using the hydration reaction of the Static Blasting Agent in blasthole, so that medicament deformation is generated volume expansion, slowly pacify again
Quiet is applied to hole wall by the bulbs of pressure.The tensile stress caused by radial pressure is tangentially upper in hole wall is more than the tension for the body that is broken
When intensity, object is just broken.Static blasting operational procedure is generally：Concrete is abolished in blasting arrangement investigation → explosion designs →
Protective layer → exposing reinforcing bar → cuts off reinforcing bar, constraint relief → drilling → selection cracking agent → filling perfusion → health → secondary broken
Broken → cleaning.
Currently, still lacking effective measuring device of through-hole hoop strain during static crushing.
Invention content
The present invention in order to solve the problems in the prior art, proposes a kind of survey of through-hole hoop strain during static crushing
Measure device.
To achieve the above object, the present invention uses following technical scheme：Through-hole hoop strain during a kind of static crushing
Measuring device, it includes sensor and sheet metal, and the sheet metal is arc-shaped, sheet metal outer surface arc radius and blasthole
Radius is equal, and the sheet metal height is higher than blasthole height, and the sensor includes amesdial and amesdial pedestal, described thousand points
Table is connect with amesdial pedestal, and the amesdial pedestal contains magnet, and the sheet metal circular arc crowning and blasthole hole wall are close
Bonding makes sheet metal penetrate through blasthole, and the sheet metal is arranged in pairs, and the arc-shaped centre of form line of sheet metal is made to pass through the blasthole center of circle,
The sensor is arranged in pairs on the arc-shaped centre of form line of sheet metal, is made in amesdial gauge head and sheet metal circular arc crowning
Heart position contacts, and so that amesdial pedestal is stably connected with armored concrete test specimen by the magnet contained in amesdial pedestal, institute
Plug is placed in the lower part for stating blasthole, and centre filling static breaking agent, top is clogged with plug, during static crushing, is inserted into big gun
Sheet metal in hole is moved with the expansion of static breaking agent, measures the radial displacement of sheet metal and foundation in real time by amesdial
It can be obtained the variation numerical value and curve of the hoop strain of blasthole after formula scales.
Further, the sheet metal uses steel disc.
Further, the sheet metal arc length is less than the half of blasthole perimeter.
Further, the sheet metal arc length is equal to a quarter of blasthole perimeter.
Further, it is closely bonded using 502 adhesive between the sheet metal circular arc crowning and blasthole hole wall.
Further, the conversion foundation formula isWherein, ε is blasthole hoop strain, Δ1For
First sheet metal displacement, Δ2For the second sheet metal displacement, D is blasthole diameter.
The transmittance process of through-hole hoop strain is during static crushing of the present invention：When blasthole is in static breaking agent
When circumferential deformation occurring under expansion, sheet metal can also be forced to move radially along blasthole due to being close to blasthole hole wall, drive thousand
Divide moving radially for table gauge head, so as to real-time monitor the displacement of sheet metal.It can realize as a result, broken in static state to blasthole
The monitoring of hoop strain in broken overall process.
Compared with prior art, the beneficial effects of the invention are as follows：There is provided that a kind of assembling is simple, measures accurate, repeatable profit
Measuring device.To measure static breaking agent expansion strain, quantization crushing effect provides foundation.It is anti-to solve static breaking agent
The problem for answering heat release to cause measurement result bigger than normal eliminates the step of pasting foil gauge, and reasonable design is simple in structure, user
Just, high sensitivity.
Description of the drawings
Fig. 1 is the measuring device schematic top plan view of through-hole hoop strain during a kind of static crushing of the present invention
Fig. 2 is the positive elevational schematic view of measuring device of through-hole hoop strain during a kind of static crushing of the present invention
Fig. 3 is the measuring device side elevation schematic diagram of through-hole hoop strain during a kind of static crushing of the present invention
Fig. 4 is the measuring device axonometric drawing of through-hole hoop strain during a kind of static crushing of the present invention
1- sheet metals, 2- amesdials, 3- amesdial pedestals, 4- blastholes, 5- static breaking agents, 6- plugs, 7- reinforced concretes
Native test specimen, 8- circular arc crownings
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation illustrates.
Illustrate present embodiment referring to Fig. 1-4, the measuring device of through-hole hoop strain during a kind of static crushing, it is wrapped
Sensor and sheet metal 1 are included, the sheet metal 1 is arc-shaped, and 1 outer surface arc radius of sheet metal is equal with 4 radius of blasthole, institute
1 height of sheet metal is stated higher than 4 height of blasthole, the sensor includes amesdial 2 and amesdial pedestal 3, the amesdial 2 and thousand
Table pedestal 3 is divided to connect, the amesdial pedestal 3 contains magnet, and 1 circular arc crowning 8 of the sheet metal is closely glued with 4 hole wall of blasthole
It connects, so that sheet metal 1 is penetrated through blasthole 4, the sheet metal 1 is arranged in pairs, so that 1 arc-shaped centre of form line of sheet metal is passed through blasthole 4 and is justified
The heart, the sensor are arranged in pairs on the arc-shaped centre of form line of sheet metal 1, keep 2 gauge head of amesdial and 1 circular arc of sheet metal convex
The contact of 8 center of face is played, keeps amesdial pedestal 3 steady with armored concrete test specimen 7 by the magnet contained in amesdial pedestal 3
Plug 6, centre filling static breaking agent 5 are placed in the lower part of fixed connection, the blasthole 4, and top plug 6 clogs, static crushing
In the process, the sheet metal 1 being inserted into blasthole 4 is moved with the expansion of static breaking agent 5, and metal is measured in real time by amesdial 2
The radial displacement of piece 1 and variation numerical value and curve according to the hoop strain that can be obtained blasthole 4 after formula scales.
Sheet metal 1 of the present invention preferentially uses steel disc, arc-shaped arc length to be less than the half of 4 perimeter of blasthole, for just
In a quarter that the preferred arc length of flexible arrangement is 4 perimeter of blasthole, used between 1 circular arc crowning 8 of sheet metal and 4 hole wall of blasthole
502 adhesive closely bond, and the conversion is according to formulaWherein, ε is blasthole hoop strain, Δ1For
First sheet metal displacement, Δ2For the second sheet metal displacement, D is 4 diameter of blasthole.To ensure the mobile energy of measured sheet metal 1
The 4 true radial strain of precise reaction blasthole makes 1 circular arc crowning 8 of sheet metal closely bond with 4 hole wall of blasthole, make sheet metal 1
Arc-shaped centre of form line is arranged in pairs at sheet metal by 4 center of circle of blasthole, by amesdial 2.To ensure that static breaking agent 5 is expanding
When not by extra constraint, be mutually not connected between two metal sheets 1.
Above to the measuring device of through-hole hoop strain during a kind of static crushing provided by the present invention, carry out in detail
Thin to introduce, principle and implementation of the present invention are described for specific case used herein, and above example is said
The bright method and its core concept for being merely used to help understand the present invention；Meanwhile for those of ordinary skill in the art, foundation
The thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (6)
1. the measuring device of through-hole hoop strain during a kind of static crushing, which is characterized in that it includes sensor and metal
Piece (1), the sheet metal (1) are arc-shaped, and sheet metal (1) outer surface arc radius is equal with blasthole (4) radius, the metal
Piece (1) is highly higher than blasthole (4) height, and the sensor includes amesdial (2) and amesdial pedestal (3), the amesdial (2)
It is connect with amesdial pedestal (3), the amesdial pedestal (3) contains magnet, sheet metal (1) the circular arc crowning (8) and big gun
Hole (4) hole wall closely bonds, and sheet metal (1) is made to penetrate through blasthole (4), and the sheet metal (1) is arranged in pairs, makes sheet metal (1) circle
Arc centre of form line is arranged in pairs at by blasthole (4) center of circle, the sensor on the arc-shaped centre of form line of sheet metal (1),
So that amesdial (2) gauge head is contacted with sheet metal (1) circular arc crowning (8) center, passes through what is contained in amesdial pedestal (3)
Magnet makes amesdial pedestal (3) be stably connected with armored concrete test specimen (7), and plug (6) is placed in the lower part of the blasthole (4),
Centre filling static breaking agent (5), top is clogged with plug (6), during static crushing, the sheet metal in insertion blasthole (4)
(1) it is moved with the expansion of static breaking agent (5), measures the radial displacement of sheet metal (1) and foundation in real time by amesdial (2)
It can be obtained the variation numerical value and curve of the hoop strain of blasthole (4) after formula scales.
2. the measuring device of through-hole hoop strain during a kind of static crushing according to claim 1, it is characterised in that：
The sheet metal (1) uses steel disc.
3. the measuring device of through-hole hoop strain during a kind of static crushing according to claim 1, it is characterised in that：
Sheet metal (1) arc length is less than the half of blasthole (4) perimeter.
4. the measuring device of through-hole hoop strain during a kind of static crushing according to claim 1, it is characterised in that：
Sheet metal (1) arc length is equal to a quarter of blasthole (4) perimeter.
5. the measuring device of through-hole hoop strain during a kind of static crushing according to claim 1, it is characterised in that：
It is closely bonded using 502 adhesive between sheet metal (1) the circular arc crowning (8) and blasthole (4) hole wall.
6. the measuring device of through-hole hoop strain during a kind of static crushing according to claim 1, it is characterised in that：
The conversion is according to formulaWherein, ε is blasthole hoop strain, Δ1For the first sheet metal displacement, Δ2
For the second sheet metal displacement, D is blasthole (4) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810777469.4A CN108775855B (en) | 2018-07-16 | 2018-07-16 | Measuring device for circumferential strain of through hole in static crushing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810777469.4A CN108775855B (en) | 2018-07-16 | 2018-07-16 | Measuring device for circumferential strain of through hole in static crushing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108775855A true CN108775855A (en) | 2018-11-09 |
| CN108775855B CN108775855B (en) | 2021-02-12 |
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| CN201810777469.4A Active CN108775855B (en) | 2018-07-16 | 2018-07-16 | Measuring device for circumferential strain of through hole in static crushing process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752062A (en) * | 2019-01-21 | 2019-05-14 | 哈尔滨工业大学 | A kind of real-time monitoring system of static breaking agent volume expansion |
| CN110986727A (en) * | 2019-12-13 | 2020-04-10 | 陕西凝远新材料科技股份有限公司 | Evaporate and press aerated concrete reinforcing bar displacement testing arrangement for panel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752062A (en) * | 2019-01-21 | 2019-05-14 | 哈尔滨工业大学 | A kind of real-time monitoring system of static breaking agent volume expansion |
| CN110986727A (en) * | 2019-12-13 | 2020-04-10 | 陕西凝远新材料科技股份有限公司 | Evaporate and press aerated concrete reinforcing bar displacement testing arrangement for panel |
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| Publication number | Publication date |
|---|---|
| CN108775855B (en) | 2021-02-12 |
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