CN208171111U - A kind of static crushing control device - Google Patents
A kind of static crushing control device Download PDFInfo
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- CN208171111U CN208171111U CN201820692012.9U CN201820692012U CN208171111U CN 208171111 U CN208171111 U CN 208171111U CN 201820692012 U CN201820692012 U CN 201820692012U CN 208171111 U CN208171111 U CN 208171111U
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- static
- hole
- electrothermal tube
- voussoir
- crushing
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Abstract
The utility model discloses a kind of static crushing control devices.The static crushing control device includes：Hole packer（It includes：Voussoir, side wall are equipped with inclined-plane；Key matches with inclined-plane；Screw rod is connected to voussoir top surface with one heart；Nut is set on screw rod；Wherein, voussoir and pitch are equipped with axial through hole）；Electrothermal tube, is internally provided with temperature sensor, and electrothermal tube inserts in the through hole in hole packer；Temperature controller is connected with electrothermal tube, and controls electrothermal tube heating.The utility model efficiently solves the problems, such as that static crushing technology crushing performance is low, construction risk is higher low with crushing effect controllability.
Description
Technical field
The invention belongs to static crushing technical fields, and in particular to arrive a kind of static crushing control device.
Background technique
Traditional demolition reduction technology has artificial process, Mechanical Method, blasting procedure etc..Wherein, artificial process construction efficiency is low, economical
It is at high cost, it is not suitable for heavy construction；Mechanical Method energy consumption is larger, can not construct in part special operation face；Explosion rule
Risk is higher, the safety of work progress be difficult to ensure it is low in stone mining borehole blasting method lumber recovery, since rock material resource is limited, generation
Boundary's national laws, which have been prohibited, exploits rock using explosive, and explosive blasting has " seven big harm "：Attenuation of seismic waves, blast impulse
Wave, slungshot, noise, poison gas, dust and blind big gun.
Compared with traditional demolition reduction technology, static crushing technology overcomes the above problem, have construction efficiency it is higher,
Consuming energy, low, economic cost is lower, the environmentally friendly advantage safer with construction.The realistic meaning of static crushing technology is：(1) exist
In the case where no explosive blasting " seven big harm ", rock and concrete disintegrating；(2) static breaking agent belongs to common building materials, no
By the dangerous material relevant laws and regulations control such as explosive, construction personnel can be operated through simple training.
Static breaking agent is that material is crushed used in static crushing technology.Static breaking agent is a kind of solid powder material
Material, main component are f-CaO (free calcium oxide) and a small amount of additive.Static breaking agent occurs hydration reaction after mixing with water and produces
Raw expansion of solids, apparent volume increase several times, if reaction occurs under constraint condition, will generate the turgor pressure for reaching tens of megapascal.
At present static crushing technology there are the problem of mainly have.
1, crushing performance is low.Show as low two aspect long with the broken time of breaking capacity.The main reason for breaking capacity is low
It is that effective expansion when static breaking agent is broken is forced down, the static breaking agent aquation about 30MPa ~ 50MPa of turgor pressure for 24 hours, deficiency
The 50% of its aquation peak expansion pressure, and static breaking agent reaches hydration reaction time 1 year of peak expansion pressure or more, in engineering
The broken time of left and right is much unable to reach its peak expansion pressure for 24 hours.And broken time length be then relative to explosive moment it is quick-fried
Broken effect, the broken time of static crushing technology is usually at 10 hours or more；When environment temperature is lower, the aquation of static breaking agent
Expansion rate is greatly reduced, and so that the broken time is extended a couple of days, in some instances it may even be possible to static breaking agent be made to lose expansion.
2, construction risk is high.Powder charge initial stage static breaking agent slurry is in fluid state, and boring aperture is larger or environment
When temperature is higher, the heat of hydration of static breaking agent is deposited in drilling rapidly, sprays slurry boiling out of drilling, spray orifice occurs
Accident endangers operating personnel's safety, causes crushing operation to fail, schedule delays.
3, crushing effect controllability is low.Static crushing construction is commonly porous operation, since the broken time is longer, multiple brills
Static breaking agent is difficult to keep that turgor pressure development process is synchronous in hole, whether crackle occurs and occurs between drilling position and
Time randomness is stronger, applies and is restricted in the engineering for needing accurate control crushing effect.
Summary of the invention
It is an object of the invention to solve at least the above problems, and provide the advantages of at least will be described later.
In order to realize these purposes and other advantages according to the present invention, a kind of static crushing control device is provided, is wrapped
It includes：
Hole packer comprising：Voussoir, side wall are equipped with several inclined-planes；Key matches with the inclined-plane, the wedge
The height of piece is higher than wedge height；Screw rod is connected to the voussoir top surface with one heart；Nut is set on the screw rod, institute
It is inconsistent with key to state nut bottom；Wherein, the voussoir and pitch are equipped with the through hole axially penetrated through；
Electrothermal tube, is internally provided with temperature sensor, and the electrothermal tube inserts in the through hole in the hole packer；
Temperature controller is connected with the electrothermal tube, and controls the electrothermal tube heating.
Preferably, wherein gasket is equipped between the nut and key.
Preferably, wherein the temperature sensor is thermocouple temperature sensor or thermal resistance type temperature sensor.
The present invention is include at least the following beneficial effects.
1, crushing performance is improved.It improves breaking capacity and shortens the broken time；By electrothermal tube to static crushing in drilling
Agent is heated at high temperature, and static breaking agent hydration swelling rate is greatly improved, and reaches static breaking agent turgor pressure in 30min
Peak value；Using the simple key formula hole packer of structure, static breaking agent axial expansion is limited, its turgor pressure is made sufficiently to act on brill
Hole hole wall.
2, working security is improved.Using the simple key formula hole packer of structure, static breaking agent expansion is limited in brill
In hole, spray orifice is efficiently solved the problems, such as.
3, crushing effect controllability is improved.When porous operation, high temperature is carried out to static breaking agent in drilling by electrothermal tube
Heating, greatly improves static breaking agent hydration swelling rate, synchronizes the static breaking agent in multiple drillings in a short time and reach
To peak expansion pressure, is conducive to crackle synchronized development between drilling, improves the controllability of crack propagation.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention：
Fig. 1 is static crushing control device schematic diagram of the present invention；
Fig. 2 is static test schematic diagram described in the embodiment of the present invention 1；
Fig. 3 is turgor pressure growth curve schematic diagram described in the embodiment of the present invention 1；
Fig. 4 is that single hole rock static state described in the embodiment of the present invention 2 is crushed schematic diagram；
Fig. 5 is porous rock static crushing schematic diagram described in the embodiment of the present invention 3.
Specific embodiment：
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
Static crushing control device provided by the invention and static crushing method are described in detail first.
The present invention provides a kind of static crushing control device, schematic diagram is as shown in Figure 1, static crushing control dress
Set including：
Hole packer (1) comprising：Voussoir (11), side wall are equipped with several inclined-planes；Key (12), with the inclined-plane phase
Matching, the height of the key (12) are higher than voussoir (11) height；Screw rod (13) is connected to the voussoir (11) top with one heart
Face；Nut (14) is set on the screw rod (13), and nut (14) bottom surface and key (13) are inconsistent；Wherein, described
Voussoir (11) and screw rod (13) center are equipped with axial through hole；
Electrothermal tube (2) is internally provided with temperature sensor (21), and the electrothermal tube (2) inserts in the hole packer (1)
Through hole in；
Temperature controller (3) is connected with the electrothermal tube (2), and controls electrothermal tube (2) heating；
Wherein, gasket (15) are equipped between the nut (14) and key (13)；The temperature sensor (21) is thermoelectricity
Even formula temperature sensor or thermal resistance type temperature sensor；Resistance wire (22) are provided in the electrothermal tube.
Implementation principle：The voussoir (11) for being connected with screw rod (13) is vertically put into drilling, keeps the bottom surface of voussoir (11) proper
Static breaking agent slurry in good contact drilling, the nut (14) in fastening hole packer (1), using gasket (15) limitation key with
Relative displacement between nut (14) forms upward pulling force to voussoir (11) by screw rod (13), via voussoir (11) and wedge
Inclined-plane between piece (12) makes key (12) generate great pressure to drilling inner hole wall, due to key the amplification of power
(12) drilling inner hole wall between frictional force effect, make hole packer (1) be locked at drilling in be not subjected to displacement, by static crushing
Agent slurry constrains in drilling, while static breaking agent also can be through voussoir to the pressure of voussoir (11) bottom surface of hole packer (1)
(11) inclined-plane increases key (12) to the pressure of borehole wall to the amplification of power between key (12), and then enhances wedge
Frictional force between piece (12) and borehole wall enhances the locking effect of hole packer (1), static breaking agent slurry is constrained in drilling
It is interior, solve spray orifice hidden danger.High temperature is carried out to static breaking agent in drilling by temperature controller (3) control electrothermal tube (2) to add
Heat, the interior static that makes to drill rapidly increase to peak value, improve breaking capacity, shorten the broken time.
Implementation method：First according to requirement of engineering, drill on object to be broken (rock or concrete component)；Jiang Shui with it is quiet
State cracking agent is packed into drilling after mixing；Install control device the step of be：Voussoir (11) dress of screw rod (13) will be connected with
Enter drilling to voussoir (11) bottom surface and be exactly in contact with static breaking agent slurry in drilling, to obtain optimal sealing of hole effect, then will
At two panels key (12) installation to voussoir (11) two sides inclined-plane, by gasket (15) installation to screw rod (13), nut (14) are covered
To on screw rod (13), and spanner fastening nut is utilized, finally the through hole insertion by electrothermal tube (2) through hole packer (1) is until bore
Hole bottom；Then control electrothermal tube (2) is heated：First with the heating temperature of temperature controller (3) control electrothermal tube (2)
It is 50 DEG C ~ 100 DEG C, and heats 5min ~ 15min, to accelerate the condensation cure process of static breaking agent slurry, keeps heating temperature
It avoids the cause in static breaking agent slurry condensation cure completion less than 100 DEG C to be in fluid state and overheat boiling, through sealing
In gap between hole device (1) and borehole wall outside squit hole, slurry mass loss is caused, weakens static crushing effect；Then
The heating temperature that electrothermal tube (2) is arranged is 50 DEG C ~ 500 DEG C, due to the hydrated product Ca of the expansion sources f-CaO of static breaking agent
(OH)2It can decompose being higher than 500 DEG C, setting heating upper limit is 500 DEG C can improve static breaking agent to greatest extent
Hydration swelling rate, improve breaking capacity, shorten the broken time.
Static crushing control device provided by the invention is illustrated combined with specific embodiments below.All implementations below
Example uses 220V AC power source.
Embodiment 1
The present embodiment is the static test experiments that static crushing control device provided by the invention carries out.
Pressure measuring unit is devised in conjunction with static crushing control device, device feature part specification is as shown in table 1：
1. pressure measuring unit component specification table of table.
The present embodiment has used two steel pipes, is denoted as A, B.Wherein strain ga(u)ge is circumferentially pasted on two steel pipes respectively
Middle part, wherein the final heating temperature of A steel pipe be 90 DEG C, B steel pipe does not heat.
First by water and static breaking agent with weight ratio 0.26:1 is uniformly mixed.A steel pipe test schematic diagram as shown in Fig. 2,
Strain ga(u)ge (5) is along the circumferential direction pasted in the middle part of steel pipe, and strain ga(u)ge (5) is led with resistance strain gauge (7) using dedicated
Line connects, the temperature controller (31) of thermocouple and resistance wire terminals and temperature controller (3) at the top of electrothermal tube (2) and friendship
Contactor (32) connection is flowed, the static breaking agent (6) mixed is packed into A steel pipe (4) at away from top about 80mm, by hole packer
(1) it is installed on pipe inner top, and uses spanner fastening nut, electrothermal tube (2) is inserted into steel pipe through hole packer (1) through hole
(4) bottom puts on polybag and is vertically placed in sink, powers on, and sets heating temperature as 90 DEG C and keeps heating 12min,
Then control heating temperature is 150 DEG C, measurement strain development process.B steel pipe strain ga(u)ge uses dedicated with resistance strain gauge
Conducting wire connection, the static breaking agent mixed is filled to B steel pipe, puts on polybag, is placed in 30 DEG C of waters bath with thermostatic control, measurement strain
Development process.
According to Elasticity thick-cylinder theory and building material industry standard JC 506-2008, the turgor pressure of static breaking agent
Calculating is given by the following formula：
Wherein：For the turgor pressure that steel pipe is subject to, Pa；For the elasticity modulus of steel pipe, Pa；For outer diameter of steel pipes and internal diameter
Ratio；For the strain of steel pipe circumferencial direction；For the Poisson's ratio of steel pipe.The strain value measured is calculated by above formula, obtains two steel
The turgor pressure growth curve of static breaking agent in managing, as shown in Figure 3.
Spray orifice phenomenon does not occur for A steel pipe in experimentation, and axial displacement does not occur for hole packer.A steel pipe in about 30min just
Reach turgor pressure peak value, about 78MPa.And almost not formed effective turgor pressure when B steel pipe 30min, react 400min turgor pressure
About 26MPa.
The result shows that：Static crushing control device provided by the invention effectively inhibits spray orifice, greatly improved static broken
Broken dose of peak expansion pressure and turgor pressure rate of rise, is greatly shortened turgor pressure and reaches peak value required time, hole packer is in pipe
Mouth generates good only lock effect, so that expansion pressure energy is sufficiently acted on tube wall, takes full advantage of the potential for gas expansion of static breaking agent.
Achieve the purpose that improve static crushing technology crushing performance and working security.
Embodiment 2
The present embodiment is broken for single hole rock static state.
The equipment department divider lattice used are as shown in table 2：
2. material specifications table of table.
As shown in figure 4, the present embodiment uses square granite test specimen (8), taking minimum burden, (drill center is to recently
The shortest distance on the scope of freedom) W=0.7m, the depth that drilled on test specimen center using 40mm drill bit is the hole of 1.2m；Electrothermal tube (2) with
The temperature controller (31) of temperature controller (3) is connected with A.C. contactor (32).By weight by water and static breaking agent
0.26:1 ratio mixes.It is packed into the static breaking agent mixed into drilling at the 60mm of aperture, pacifies at the top of drilling
It fills hole packer (1), and uses spanner fastening nut, electrothermal tube (2) is inserted into drilling bottom through hole packer (1) medium pore immediately
Portion connects temperature controller (3) power supply, sets 90 DEG C of heating temperature and the temperature is kept to heat 10min, then setting heating temperature
Degree is 200 DEG C and the temperature is kept to heat.
By about 13min after beginning to warm up, there is 4 Cracks, 15min along minimum burden from 4 scope of freedoms are bored into
4 Cracks expand as the crack of width about 10mm afterwards, and test specimen is split into 4 sillars having a size of 0.7m x 0.7m x1.4m, are crushed
Spray orifice phenomenon does not occur for process.
Using static crushing control device provided by the invention by test specimen successful fracture be 4 sillars, the static crushing
Static breaking agent is constrained in drilling by control device, and the potential for gas expansion of static breaking agent is made sufficiently to act on borehole wall, is led to
Cross electrothermal tube to drill in static breaking agent heat, turgor pressure rate of rise greatly improved, by the broken time by 10h with
On foreshorten to 15min, using small-bore (40mm) drill, complete traditional static crushing technology and aperture 50mm or more needed to drill
The crushing operation that could be completed has saved static breaking agent dosage.Compared with traditional static crushing technology, brokenness is improved
Can, so that can reduce boring aperture under same operating condition, saving static breaking agent dosage and reducing cost.Reach and has mentioned
High static crushing technology crushing performance, the purpose for improving working security.
Embodiment 3
The present embodiment is porous rock static crushing.Test site is certain marble mine.
The material specifications used are as shown in table 3：
3. material specifications table of table.
As shown in figure 5, the maximum scope of freedom takes minimum burden W=1m, the two sides scope of freedom takes minimum burden W1=0.4m, hole
Space D takes 0.7m, and drilling hole amount 8.It the use of 40mm drill bit is 1.2m's by above parameter drilling depth on marble test specimen (9)
Hole；8 electrothermal tubes (2) are connected to temperature controller (3).Water and static breaking agent are mixed by weight 0.26 ratio.
Same operation is carried out to each drilling：It is packed into the static breaking agent mixed into drilling at the 60mm of aperture, is drilling
Hole packer (1) is installed at top, and uses spanner fastening nut, and electrothermal tube (2) is inserted into brill through hole packer (1) through hole immediately
Hole bottom.Temperature controller (3) power supply is connected, 90 DEG C of heating temperature is set and the temperature is kept to heat 10min, then setting adds
Hot temperature is 200 DEG C and the temperature is kept to heat.
By about 14min after beginning to warm up, drill to the right side scope of freedom most along left side scope of freedom minimum burden through all
There is a through-wall crack in island operation, and crackle expands as the crack of width about 10mm after 16min, and marble divides out one piece of ruler
Spray orifice phenomenon does not occur for the very little sillar for 5.7m x 1m x1.4m, shattering process.
The complete stone material of bulk is successfully produced from marble deposit using static crushing control device provided by the invention.Institute
Design control device constrains in static breaking agent in drilling, and the potential for gas expansion of static breaking agent is made sufficiently to act on drilling hole
The broken time is foreshortened to 16min by wall, using the aperture 40mm, has saved static breaking agent dosage.The present invention then solves biography
Unite the porous operation of static crushing technology when drilling in the reaction of static breaking agent hydration swelling it is asynchronous, crackle is difficult to control, difficult
The problem of crackle control effect to reach needs, to multiple drillings while carrying out sealing of hole heating, makes the turgor pressure of each drilling
Synchronized development in a short time, so that the synchronous extension of porous crackle, the marble section of exploitation is smooth, no internal injury.
The present invention improves crushing performance compared with traditional static crushing technology, so that can reduce brill under same operating condition
Hole aperture saves static breaking agent and reduces cost, has reached raising static crushing technology crushing performance, has improved working security
With the purpose for improving crushing effect controllability.
Key described above, the quantity of electrothermal tube, specification, scale are for simplifying explanation of the invention.To this hair
The application of bright static crushing control device and static crushing method, modifications and variations are aobvious to one skilled in the art
And it is clear to.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (3)
1. a kind of static crushing control device, which is characterized in that including：
Hole packer comprising：Voussoir, side wall are equipped with several inclined-planes；Key matches with the inclined-plane, the key
Height is higher than wedge height；Screw rod is connected to the voussoir top surface with one heart；Nut is set on the screw rod, the spiral shell
Female bottom surface and key are inconsistent；Wherein, the voussoir and pitch are equipped with axial through hole；
Electrothermal tube, is internally provided with temperature sensor, and the electrothermal tube inserts in the through hole in the hole packer；
Temperature controller is connected with the electrothermal tube, and controls electrothermal tube heating.
2. static crushing control device as described in claim 1, which is characterized in that be equipped with pad between the nut and key
Piece.
3. static crushing control device as described in claim 1, which is characterized in that the temperature sensor is thermojunction type temperature
Spend sensor or thermal resistance type temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820692012.9U CN208171111U (en) | 2018-05-10 | 2018-05-10 | A kind of static crushing control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820692012.9U CN208171111U (en) | 2018-05-10 | 2018-05-10 | A kind of static crushing control device |
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| CN208171111U true CN208171111U (en) | 2018-11-30 |
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ID=64366658
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| CN201820692012.9U Expired - Fee Related CN208171111U (en) | 2018-05-10 | 2018-05-10 | A kind of static crushing control device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068256A (en) * | 2019-06-04 | 2019-07-30 | 吕梁学院 | A kind of mechanical swelling type sealing of hole and slip casting integration LARGE APERTURE STATIC IMAGING broken rock device and application method |
| CN112546772A (en) * | 2020-11-27 | 2021-03-26 | 西南科技大学 | Dust removal bubble generator and dust removal method thereof |
-
2018
- 2018-05-10 CN CN201820692012.9U patent/CN208171111U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068256A (en) * | 2019-06-04 | 2019-07-30 | 吕梁学院 | A kind of mechanical swelling type sealing of hole and slip casting integration LARGE APERTURE STATIC IMAGING broken rock device and application method |
| CN110068256B (en) * | 2019-06-04 | 2023-06-20 | 吕梁学院 | Mechanical expansion type hole sealing and grouting integrated large-aperture static rock breaking device and use method |
| CN112546772A (en) * | 2020-11-27 | 2021-03-26 | 西南科技大学 | Dust removal bubble generator and dust removal method thereof |
| CN112546772B (en) * | 2020-11-27 | 2022-07-08 | 西南科技大学 | Dust removal bubble generator and dust removal method thereof |
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