CN103969133B - A kind of method for comprehensive detection of stress of coal seam - Google Patents
A kind of method for comprehensive detection of stress of coal seam Download PDFInfo
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- CN103969133B CN103969133B CN201410168017.8A CN201410168017A CN103969133B CN 103969133 B CN103969133 B CN 103969133B CN 201410168017 A CN201410168017 A CN 201410168017A CN 103969133 B CN103969133 B CN 103969133B
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- coal seam
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- pressure measurement
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- comprehensive detection
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Abstract
The invention provides the method for comprehensive detection of a kind of stress of coal seam, including: step one, the first tunnel and the second tunnel are set in both sides, coal seam；Step 2, gets out exploration hole on coal seam；Step 3, arranges composite braces in exploration hole, and composite braces the first end connects the hydraulic power unit in the first tunnel, and the second end connects first detector unit in the second tunnel；Step 4, composite braces is pulled by hydraulic power unit, in the first detector unit during the second tunnel arrives the first tunnel through coal seam: impact coal seam by the punching press end face of the pressure measurement base plate the first detector unit and form punching, record the value of thrust of hydraulic power unit simultaneously thus obtain coal seam shearing resistance；By the movable pressure measurement plate in the first detector unit by punching, record the hole wall of punching simultaneously and to the force value of movable pressure measurement plate thus obtain coal seam crustal stress.It is an object of the invention to can detect coal seam crustal stress, shearing resistance and elastic force simply and easily.
Description
Technical field
The present invention relates to the analysis method of coal seam mechanical property, particularly relate to the comprehensive inspection of a kind of stress of coal seam
Survey method.
Background technology
In underground mine recovery process, coal seam is carried out stress mornitoring and can not only predict gas storage in coal seam
Amount, moreover it is possible to evidence-based directive function is played in the prevention to gas accident.Existing detection method is typically to make
With pressure transducer, stress of coal seam is detected, pressure transducer is arranged on coal seam, passes through the signal of telecommunication
Being connected with operating board, manual operation detection device detects.Detected by then passing through sensor, because of
It is complicated to there is detection method in this prior art, the problem that testing result is single.
For the deficiencies in the prior art, it is necessary to propose a kind of simple, multiple stress can be detected simultaneously
Stress of coal seam detection method.
Summary of the invention
The invention aims to provide the method for comprehensive detection of a kind of stress of coal seam, it is possible to examine simply and easily
Survey coal seam crustal stress, shearing resistance and elastic force.
To achieve these goals, the invention provides the method for comprehensive detection of a kind of stress of coal seam, including:
Step one, is respectively provided with the first tunnel and the second tunnel in both sides, coal seam to be measured；
Step 2, gets out, on described coal seam to be measured, the exploration hole matched with composite braces diameter；
Step 3, arranges described composite braces in described exploration hole, the first end of described composite braces and institute
The hydraulic power unit stating the first tunnel connects, and the second end of described composite braces connects described second tunnel
First detector unit；
Step 4, pulls described composite braces by described hydraulic power unit, in described first detector unit
During described second tunnel arrives described first tunnel through described coal seam to be measured:
Impact described coal seam to be measured by the punching press end face of the pressure measurement base plate in described first detector unit to be formed
Punching, records the value of thrust of described hydraulic power unit simultaneously thus obtains coal seam shearing resistance；
By the movable pressure measurement plate in described first detector unit by described punching, record described punching simultaneously
The hole wall in hole is to the force value of described movable pressure measurement plate thus obtains coal seam crustal stress.
Preferably, in above-mentioned method for comprehensive detection, also include:
Afterbody in described first detector unit connects the second detector unit, passes in described first detector unit
Behind described coal seam to be measured, described second detector unit is stayed inside described coal seam to be measured；By in scheduled duration
The change of the force value of the movable pressure measurement plate in interior described second detector unit determines coal seam elastic force.
Preferably, in above-mentioned method for comprehensive detection, described scheduled duration is more than 12 hours, if described
The force value of the movable pressure measurement plate in the second detector unit rises, then confirm that described coal seam elastic force is more than institute
State coal seam crustal stress；
If the force value of the movable pressure measurement plate in described second detector unit declines, then confirm described coal seam
Elastic force is less than described coal seam crustal stress.
Preferably, in above-mentioned method for comprehensive detection, before described step 4, also include:
Afterbody in described second detector unit connects the 3rd detector unit；Described first detector unit, described
Second detector unit is identical with described 3rd detector unit.
Preferably, in above-mentioned method for comprehensive detection, in described step 4, by hydraulic jack pressurising,
Drive pushing tow dish, pushing tow pull bar, pressure measurement pulling plate forward successively, thus pull composite braces to travel forward.
Preferably, in above-mentioned method for comprehensive detection, described composite braces is set and is formed by connecting by multistage rod member,
Every section of described rod member can individually be dismantled.
Preferably, in above-mentioned method for comprehensive detection, described hydraulic power unit arranges preposition pressure gauge
Show the value of thrust of described hydraulic power unit.
Preferably, in above-mentioned method for comprehensive detection, arrange after described movable pressure measurement plate pressurized below compressing
Tubular pressure measurement oil storage body, rearmounted pressure gauge is set and shows the force value of described movable pressure measurement plate.
The present invention at least has following technical effect that
1), in the present invention, the shearing in coal seam is overcome owing to pressure measurement base plate is dependent on the pulling force of hydraulic power unit
Power is proal, therefore there is calculated relationship between pulling force and shearing force, by record hydraulic power unit
Value of thrust just can know that the size of coal seam shearing resistance again through certain calculating.Exist simultaneously because coal seam is internal
Stress, the most movable pressure measurement plate can be by the pressure from punching hole wall, pressure size and coal seam crustal stress
There is calculated relationship between size, by record hole wall, the force value of movable pressure measurement plate is devised a stratagem through one again
Calculate and just can know that coal seam crustal stress size.Detection method is simple and convenient, can detect two kinds of stress simultaneously, detection
Diverse in function.
2) in the present invention, it is connected to the second detector unit at the first detector unit afterbody, by record second
The force value of the movable pressure measurement plate in detector unit just can know that coal seam crustal stress size, by observing second
Movable pressure measurement plate in detector unit force value situation of change in the given time, just can know that coal seam bullet
Property power and coal seam crustal stress magnitude relationship.Detection method is easy, and principle is simple, it is easy to operation.
3), in the present invention, multiple identical detector unit is set and repeats coal seam is carried out stress measurement, repeatedly
Measure the elastic force in coal seam, crustal stress and shearing resistance, it is ensured that the accuracy of measurement result.
According to below in conjunction with the accompanying drawing detailed description to the specific embodiment of the invention, those skilled in the art will
More understand the above-mentioned of the present invention and other purposes, advantage and feature.
Accompanying drawing explanation
Some describing the present invention the most by way of example, and not by way of limitation in detail are concrete
Embodiment.Reference identical in accompanying drawing denotes same or similar parts or part.Art technology
Personnel are it should be understood that what these accompanying drawings were not necessarily drawn to scale.In accompanying drawing:
Fig. 1 is the flow chart of the stress of coal seam method for comprehensive detection that one embodiment of the invention provides；
Fig. 2 is the enforcement installation drawing of the stress of coal seam method for comprehensive detection that another embodiment of the present invention provides.
Description of reference numerals is as follows: Hydraulic Station 1, hydraulic oil pipe 2, operating board 3, and hydraulic control valve 4 is front
Put pressure gauge 5, hydraulic jack 6, pushing tow pull bar 7, pushing tow dish 8, oil pipe 9 on hydraulic jack, hydraulic pressure
Oil pipe 10 under oil cylinder, hydraulic oil cylinder support legs 11, pressure measurement pulling plate 12, composite braces 13, pressure measurement base plate 14,
Movable pressure measurement plate 15, tubular pressure measurement oil storage body 16, pressure measurement oil pipe 17, rearmounted pressure gauge 18, main body is propped up
Tray 19, adjustable support leg 20.
Detailed description of the invention
Fig. 1 is the flow chart of the stress of coal seam method for comprehensive detection that one embodiment of the invention provides.Such as Fig. 1
Shown in, the embodiment of the present invention provides the method for comprehensive detection of a kind of stress of coal seam, including:
Step 101, is respectively provided with the first tunnel and the second tunnel in both sides, coal seam to be measured；
Step 102, gets out the exploration hole matched with composite braces 13 diameter on coal seam to be measured；
Step 103, arranges composite braces 13 in exploration hole, the first end of composite braces 13 and the first lane
The hydraulic power unit in road connects, and the second end of composite braces 13 connects first detector unit in the second tunnel；
Step 104, pulls composite braces 13 by hydraulic power unit, in the first detector unit from the second lane
During road arrives the first tunnel through coal seam to be measured:
Impact coal seam to be measured by the punching press end face of the pressure measurement base plate 14 in the first detector unit and form punching,
Record the value of thrust of hydraulic power unit simultaneously thus obtain coal seam shearing resistance；
By the movable pressure measurement plate 15 in the first detector unit by punching, record the hole wall of punching simultaneously
To the force value of movable pressure measurement plate 15 thus obtain coal seam crustal stress.
Visible, in the embodiment of the present invention, owing to pressure measurement base plate 14 is dependent on the Lalique of hydraulic power unit
The shearing force taking coal seam is proal, therefore there is calculated relationship between pulling force and shearing force, by record
The value of thrust of hydraulic power unit just can know that the size of coal seam shearing resistance again through certain calculating.Simultaneously because
There is stress inside coal seam, the most movable pressure measurement plate 15 can be by the pressure from punching hole wall, pressure
Calculated relationship is there is, by record hole wall to movable pressure measurement plate 15 between size and coal seam crustal stress size
Force value just can know that coal seam crustal stress size through certain calculating again.Detection method is simple and convenient, can be same
Time detection two kinds of stress, detect diverse in function.
In the embodiment of the present invention, hydraulic power unit is utilized to provide power for the first detector unit, in order to by liquid
Pressure power device and the first detector unit are arranged in coal seam, need first to know the thickness in coal seam, then at coal
The first tunnel and the second tunnel are made in layer both sides, are respectively mounted hydraulic power unit and the first detector unit, then
The boring that the diameter with composite braces 13 is mutually matched is got out between two tunnels, will by composite braces 13
Hydraulic power unit and the first detector unit couple together.Owing to during work, the first measuring unit needs to overcome coal
The shearing force motion of layer, therefore the size of the first measuring unit should be more than the diameter of boring, it is ensured that the
Shear action can be caused in coal seam by one measuring unit, and boring size only need to meet passing through of composite braces simultaneously
, can not be excessive, it is to avoid the first measuring unit loses shear action to coal seam, causes and detects unsuccessfully.
After installing composite braces, hydraulic power unit and the first detector unit, detection can be started.Pass through
Hydraulic power unit pulls the first detector unit to travel forward, during motion in the first detector unit through coal seam
The impact end surface of pressure measurement base plate 14 has percussion to coal seam, can leave punching in motor process on coal seam
Hole.Overcome the shearing force in coal seam owing to pressure measurement base plate 14 is dependent on the pulling force of hydraulic power unit, therefore draw
Calculated relationship is there is, by the value of thrust of record hydraulic power unit again through a devise a stratagem between power and shearing force
Calculate and just can know coal seam shearing resistance size.
And then, movable pressure measurement plate 15 can be by punching under the pulling of hydraulic power unit, due to coal
Layer is internal exists stress, and therefore the hole wall of punching can apply extruding force to movable pressure measurement plate 15, and pressure
Calculated relationship is there is, therefore by the hole wall of record punching to movable pressure measurement between size and coal seam crustal stress
The force value of plate 15 just can know that the crustal stress size in coal seam again through certain calculating.
Visible, the embodiment of the present invention have detected the size of coal seam shearing resistance by arranging pressure measurement base plate 14, profit
With punching and arrange movable pressure measurement plate 15 and have detected the crustal stress size in coal seam.Detection method principle is simple,
Easy to operate, shearing resistance and crustal stress can be measured simultaneously, detect diverse in function.
In order to detect the elastic force in coal seam, in another embodiment of the present invention, at the first detector unit afterbody even
Having connect the second detector unit, after the first detector unit entirety passes coal seam to be measured, the second detector unit continues
Stay inside coal seam to be measured, the second detector unit is stayed in the internal scheduled duration in coal seam to be measured, wait coal seam
Elastic pressure manifests, by the situation of change of the force value of the movable pressure measurement plate in the second detector unit with regard to energy
Enough determine the elastic force size in coal seam.
If the force value of the movable pressure measurement plate in the second detector unit rises, then explanation coal seam elastic force is big
In coal seam crustal stress, if force value declines, then confirm that coal seam elastic force is less than coal seam crustal stress.Detection side
Method is easy, and principle is simple, it is easy to operation.
In order to ensure the accuracy of detection, make scheduled duration be more than 12 hours, will the second detector unit stay
More than 12 hours inside coal seam to be measured.
In order to make the measurement result of stress of coal seam more accurate, the can be connected at the afterbody of the second detector unit
Three detector units；And the first detector unit, the second detector unit are identical with the 3rd detector unit.By many
Individual detector unit can be with the elastic force in repetitive measurement coal seam, crustal stress and shearing resistance, it is ensured that measurement result
Accuracy.
In order to further illustrate the stress of coal seam method for comprehensive detection that the embodiment of the present invention provides, as in figure 2 it is shown,
Additionally provide stress of coal seam method for comprehensive detection in an alternative embodiment of the invention is embodied as device.
As shown in Figure 2.Embodiments provide being embodied as of a kind of stress of coal seam method for comprehensive detection
Device, including Hydraulic Station 1, hydraulic oil pipe 2, operating board 3, hydraulic control valve 4, preposition pressure gauge 5,
Hydraulic jack 6, pushing tow pull bar 7, pushing tow dish 8, oil pipe 9 on hydraulic jack, oil pipe 10 under hydraulic jack,
Hydraulic oil cylinder support legs 11, pressure measurement pulling plate 12, composite braces 13, pressure measurement base plate 14, movable pressure measurement plate 15,
Tubular pressure measurement oil storage body 16, pressure measurement oil pipe 17, rearmounted pressure gauge 18, body abutment dish 19, adjustable support leg
20。
Wherein, Hydraulic Station 1, hydraulic oil pipe 2, operating board 3, hydraulic control valve 4, preposition pressure gauge 5,
Oil pipe 10 under oil pipe 9, hydraulic jack on hydraulic jack 6, pushing tow pull bar 7, pushing tow dish 8, hydraulic jack,
Hydraulic oil cylinder support legs 11, pressure measurement pulling plate 12, body abutment dish 19 and adjustable support leg 20 collectively constitute hydraulic pressure
Power set, pressure measurement base plate 14, movable pressure measurement plate 15, tubular pressure measurement oil storage body 16, pressure measurement oil pipe 17
The first detector unit is collectively constituted with rearmounted pressure gauge 18.
During the shearing resistance of detection coal seam, Hydraulic Station 1 is by oil pipe 9 and on hydraulic oil pipe 2, hydraulic jack
Under hydraulic jack, oil pipe 10 is to hydraulic jack 6 pressurising, promotes pushing tow dish 8 forward after hydraulic jack 6 pressurising
Motion, thus drives pushing tow pull bar 7 and pressure measurement pulling plate 12 to travel forward, thus drive composite braces 13 to
Front motion.Composite braces 13 pulls pressure measurement base plate 14 to travel forward, the punching press end face meeting of pressure measurement base plate 14
Coal seam to be measured is formed punching.
Owing to the rise of hydraulic jack 6 is limited, and the limited length in tunnel, therefore every time to hydraulic jack
After 6 pressurisings all can only pushing tow certain distance, pushing tow complete after device entirety just cannot move on, at this time
If it is intended to make hydraulic jack 6 driving device move forward, need to cancel the pressure in hydraulic jack 6,
Make pushing tow dish 8 and pressure measurement pulling plate 12 backhaul one segment distance, the most again to hydraulic jack 6 pressurising, make liquid
Compressing cylinder 6 advances again.Owing to the also backhaul of the first detector unit can be caused after hydraulic power unit backhaul, make
Become the waste of last forward travel distance, therefore can with hydraulic jack 6 backhaul before remove a joint composite braces 13,
For the backhaul space for the creativity of hydraulic jack 6, ensure the first detector unit invariant position with this.Therefore the present invention
In embodiment, arranging described composite braces 13 and be formed by connecting by multistage rod member, every section of described rod member can be individually
Dismounting, has thus reached the purpose that hydraulic jack 6 pressurising repeatedly drive against pressure first detector unit is advanced.
Time specifically used, when hydraulic jack 6 pushing tow is to certain distance, first cancel one section of composite braces 13,
Then under the control of hydraulic control valve 4, make hydraulic jack 6 backhaul, be connected with remaining composite braces 13
Together, the most again to hydraulic jack 6 pressurising, thus the first detector unit is driven to advance.
When reading detection numerical value, show hydraulic power by arranging preposition pressure gauge 5 in hydraulic power unit
The value of thrust of device, preposition pressure gauge 5 is arranged on operating board 3.When pulling by hydraulic power unit
When one detector unit travels forward, value of thrust can be read by preposition pressure gauge 5 thus obtain through calculating
Coal seam shearing resistance.
During the crustal stress of detection coal seam, movable pressure measurement plate 15 can be squeezed by hole wall when by punching
Pressure, as in figure 2 it is shown, owing to movable pressure measurement plate 15 is horizontal by certain angle of kicking up, when movably
After formula pressure measurement plate 15 is squeezed, the angle with horizontal plane can be reduced, thus oppress the tubular pressure measurement storage of lower section
Oil body 16, tubular pressure measurement oil storage body 16 promotes the fluid in pressure measurement oil pipe 17 after suffering oppression thus promotes rearmounted
Indicators turn on pressure gauge 18, i.e. can read movable pressure measurement plate 15 by rearmounted pressure gauge 18 and is subject to
Force value, calculate through certain thus obtain the crustal stress in coal seam to be measured.
In the embodiment of the present invention, comprising three identical detector units altogether, each detector unit is identical.Profit
During with the first detector unit work, can know according to the numerical value in preposition pressure gauge 5 and rearmounted pressure gauge 18
Coal seam, road shearing resistance and coal seam crustal stress, along with the first detector unit is gradually drawn out coal seam, namely second
After detector unit and the 3rd detector unit are completely into coal seam, hydraulic power unit stops drag work, by
Two detector units and the 3rd detector unit remain entirely in coal seam, at this time according to the reading of rearmounted pressure gauge 18
Number can obtain the numerical value of coal seam crustal stress, through 12 hours or more long afterwards, waits that rearmounted pressure gauge 18 shows
Existing coal seam elastic pressure size, if the force value of the rearmounted pressure gauge 18 in the second detector unit rises also
Be parked in certain numerical value, then explanation coal seam elastic force is more than coal seam crustal stress, if force value declines and is parked in one
Fixed number value, then confirm that coal seam elastic force is less than coal seam crustal stress.
Installing for convenience of the device in the embodiment of the present invention, the embodiment of the present invention is also provided with hydraulic oil cylinder support legs
11, body abutment dish 19 and adjustable support leg 20 are used for fixing single unit system, the height of adjusting means.
From the foregoing, it will be observed that the embodiment of the present invention at least has following technical effect that
1), in the present invention, the shearing in coal seam is overcome owing to pressure measurement base plate is dependent on the pulling force of hydraulic power unit
Power is proal, therefore there is calculated relationship between pulling force and shearing force, by record hydraulic power unit
Value of thrust just can know that the size of coal seam shearing resistance again through certain calculating.Exist simultaneously because coal seam is internal
Stress, the most movable pressure measurement plate can be by the pressure from punching hole wall, pressure size and coal seam crustal stress
There is calculated relationship between size, by record hole wall, the force value of movable pressure measurement plate is devised a stratagem through one again
Calculate and just can know that coal seam crustal stress size.Detection method is simple and convenient, can detect two kinds of stress simultaneously, detection
Diverse in function.
2) in the present invention, it is connected to the second detector unit at the first detector unit afterbody, by record second
The force value of the movable pressure measurement plate in detector unit just can know that coal seam crustal stress size, by observing second
Movable pressure measurement plate in detector unit force value situation of change in the given time, just can know that coal seam bullet
Property power and coal seam crustal stress magnitude relationship.Detection method is easy, and principle is simple, it is easy to operation.
3), in the present invention, multiple identical detector unit is set and repeats coal seam is carried out stress measurement, repeatedly
Measure the elastic force in coal seam, crustal stress and shearing resistance, it is ensured that the accuracy of measurement result.
So far, although those skilled in the art will appreciate that and the most detailed illustrate and describing the present invention's
Multiple exemplary embodiments, but, without departing from the spirit and scope of the present invention, still can be according to this
Disclosure of invention directly determines or derives other variations or modifications of many meeting the principle of the invention.Cause
This, the scope of the present invention is it is understood that and regard as covering other variations or modifications all these.
Claims (8)
1. the method for comprehensive detection of a stress of coal seam, it is characterised in that including:
Step one, is respectively provided with the first tunnel and the second tunnel in both sides, coal seam to be measured；
Step 2, gets out the exploration hole matched with composite braces (13) diameter on described coal seam to be measured；
Step 3, arranges described composite braces (13), described composite braces (13) in described exploration hole
The first end be connected with the hydraulic power unit in described first tunnel, the second end of described composite braces (13)
Connect first detector unit in described second tunnel；
Step 4, pulls described composite braces (13) by described hydraulic power unit, examines described first
Survey unit during described second tunnel arrives described first tunnel through described coal seam to be measured:
Described coal seam to be measured is impacted by the punching press end face of the pressure measurement base plate (14) in described first detector unit
Form punching, record the value of thrust of described hydraulic power unit simultaneously thus obtain coal seam shearing resistance；
By the movable pressure measurement plate (15) in described first detector unit by described punching, record simultaneously
The hole wall of described punching is to the force value of described movable pressure measurement plate (15) thus obtains coal seam crustal stress.
Method for comprehensive detection the most according to claim 1, it is characterised in that also include:
Afterbody in described first detector unit connects the second detector unit, passes in described first detector unit
Behind described coal seam to be measured, described second detector unit is stayed inside described coal seam to be measured；By in scheduled duration
The change of the force value of the movable pressure measurement plate in interior described second detector unit determines coal seam elastic force.
Method for comprehensive detection the most according to claim 2, it is characterised in that described scheduled duration is more than
12 hours, if the force value of the movable pressure measurement plate in described second detector unit rises, then confirm described
Coal seam elastic force is more than described coal seam crustal stress；
If the force value of the movable pressure measurement plate in described second detector unit declines, then confirm described coal seam
Elastic force is less than described coal seam crustal stress.
Method for comprehensive detection the most according to claim 3, it is characterised in that before described step 4,
Also include:
Afterbody in described second detector unit connects the 3rd detector unit；Described first detector unit, described
Second detector unit is identical with described 3rd detector unit.
Method for comprehensive detection the most according to claim 4, it is characterised in that in described step 4 is logical
Cross hydraulic jack (6) pressurising, drive pushing tow dish (8), pushing tow pull bar (7), pressure measurement pulling plate successively
(12) forward, thus pull composite braces (13) to travel forward.
Method for comprehensive detection the most according to claim 5, it is characterised in that described composite braces is set
(13) being formed by connecting by multistage rod member, every section of described rod member can individually be dismantled.
Method for comprehensive detection the most according to claim 6, it is characterised in that fill in described hydraulic power
Center preposition pressure gauge (5) and show the value of thrust of described hydraulic power unit.
Method for comprehensive detection the most according to claim 7, it is characterised in that described movable survey is set
Oppress tubular pressure measurement oil storage body (16) of lower section after pressing plate (15) pressurized, rearmounted pressure gauge (18) is set
Show the force value of described movable pressure measurement plate (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410168017.8A CN103969133B (en) | 2014-04-24 | 2014-04-24 | A kind of method for comprehensive detection of stress of coal seam |
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| CN201410168017.8A CN103969133B (en) | 2014-04-24 | 2014-04-24 | A kind of method for comprehensive detection of stress of coal seam |
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| CN103969133B true CN103969133B (en) | 2016-08-24 |
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| CN109883593B (en) * | 2019-03-15 | 2021-04-06 | 东北大学 | Coal mine rock burst monitoring and early warning device |
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