CN107328385A - Goaf roof and floor deformation and obturation stress monitoring integrated apparatus and method - Google Patents
Goaf roof and floor deformation and obturation stress monitoring integrated apparatus and method Download PDFInfo
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- CN107328385A CN107328385A CN201710695470.8A CN201710695470A CN107328385A CN 107328385 A CN107328385 A CN 107328385A CN 201710695470 A CN201710695470 A CN 201710695470A CN 107328385 A CN107328385 A CN 107328385A
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/02—Measuring force or stress, in general by hydraulic or pneumatic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
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- General Physics & Mathematics (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of deformation of goaf roof and floor and obturation stress monitoring integrated apparatus and method, the stress monitoring instrument that device fills body stress by the displacement monitor and monitoring of measuring staff and the monitoring roof and floor displacement being attached on measuring staff is constituted；Goaf top plate and the deformation data of roof and floor deep rock stratum are obtained by displacement monitor；Meanwhile, collect obturation vertical stress and horizontal stress data by two stress monitoring instruments for being additional to agent set；By these comprehensive monitoring data, reliable foundation is provided to be fully understood by stress and deformation relationship etc. between top plate and obturation interaction mechanism, top plate and obturation.
Description
Technical field
The invention belongs to mining engineering monitoring technical field, more particularly, to goaf under the solid filling mining conditions of colliery
Roof and floor settles monitoring integrated with filling body stress.
Background technology
Coal seam, which is excavated, causes strata displacement boundary constraint to be released, and will promote while caused goaf surrouding rock stress is concentrated
Extension, the changing of the relative positions and the insertion on top, bottom plate preexisting crack and structural plane, or even new microfissure is generated, so that roof collapse, bottom
Plate is deformed, displacement and destruction.Goaf is one of the major casualty source in mine, to the research of goaf stability by
The great attention in mine and the extensive concern of scholar.
In recent years, waste filling production technique is promoted in coal mining, waste filling body displacement coal body after into
For support overlying rock and the stable direct subject of maintenance, as roof and floor is extruded obturation, its bearing capacity, which is played, more fills
Point, when overburden pressure is larger and obturation can not be resisted, inside cracks and expanded, and starts softening.To ensure to fill
Fill out the safe efficient progress of mining operations, it is necessary to which filling mining working face roof and floor settlement law and filling body stress are entered
Row research, is determination, overburden deformation rupture rule and the Quality of filling body control effect of solid filling design of material scheme
Grasp and effective, reliable foundation is provided, so as to reasonable arrangement cycle operation progress, and take effective supporting measure in time.
Application for a patent for invention publication number：The A of CN 1061223767 disclose " a kind of coal wall filling mining top plate sink
Monitoring method drops ", Authorization Notice No.：The B of CN 102589763 are disclosed " a kind of obturation performance on-line monitoring system ".The former
Disclosed monitoring method lays particular emphasis on the monitoring to roof and floor displacement, and does not shift near and crush progress area roof and floor
Point, and roof and floor deformation in goaf is uniformly classified as the amount of crushing, it have ignored the pucking amount in goaf.Prison disclosed in the latter
Survey method lays particular emphasis on the monitoring of obturation stress, and actually roof and floor displacement and obturation stress is interaction.Both enter
Row is observed respectively, and the data caused can not be corresponded to effectively, is unfavorable for understanding obturation and roof and floor interaction mechanism.
The content of the invention
In order to study stress and deformation relationship between roof and floor and obturation, and avoid both monitoring what is caused respectively
Data can not effectively corresponding situation, the present invention propose a kind of monitoring point in same position can monitor roof and floor deformation, together
When can monitor obturation again answer power integrated device；Propose a kind of method that utilization device is monitored simultaneously.
In order to achieve the above object, the present invention is adopted the technical scheme that：
A kind of deformation of goaf roof and floor and obturation stress monitoring integrated apparatus, it is characterised in that by measuring staff and attached
The displacement monitor and the stress monitoring instrument composition of monitoring filling body stress of the monitoring roof and floor displacement on measuring staff；
Described displacement monitor is made up of the displacement transducer of three stay-supporteds, is installed in the fixed disk of the lower body of rod
On, the monitoring of roof deformation, roof to floor convergence and bottom deformation is respectively used to, successively by No. 1 sensor, No. 2 sensors, 3
Number sensor is monitored；
Described stress monitoring instrument has two sets, is respectively used to monitoring obturation horizontal stress and vertical stress；
Described measuring staff is set with is constituted successively by the upper body of rod, three hollow rods of middle part connecting rod and the lower body of rod, the upper body of rod
It relative can be slided in the connecting rod of insertion middle part, certain height can be formed by regulation in the lower body of rod of middle part connecting rod insertion；Institute
The middle part and bottom for stating the lower body of rod are respectively equipped with pore through body of rod both sides；Strip top plate is provided with the top of the described upper body of rod
The threading hole that No. 1 sensor bracing wire passes through that is used for communicated with measuring staff inner chamber is offered in the middle of fixed disk, top plate fixed disk, is passed through
Top plate fixed disk can be such that measuring staff upper end is fixed on top plate；Lower post is provided with the middle of bottom plate fixed disk, bottom plate fixed disk and opened
It is used for the threading hole of No. 3 sensor bracing wires provided with what is communicated with measuring staff inner chamber, can fixes measuring staff lower end by bottom plate fixed disk
On bottom plate；The bracing wire groove of No. 2 sensor bracing wires is offered on the external wall length direction of described upper boom, bracing wire groove lower end is provided with
Fix the binding post and the threading hole into upper boom intracoelomic cavity of No. 2 sensor bracing wire terminations；The body of rod of described middle part connecting rod
Top is provided with bracing wire guide.
Described stress monitoring instrument, by pressure capsule, cambered surface housing, liquid-pressure pick-up, liquid injection pipe and single-pass solenoid valve block
Into；Cambered surface housing is buckled in the pressure for being used to bear obturation on pressure capsule, and liquid-pressure pick-up is placed in the intracapsular portion of pressure, fluid pressure
Signal is sent to the controller of monitoring station and single-pass magnetic valve；Liquid injection pipe passes through the lower body of rod, and single-pass magnetic valve is placed in lower beam body
Chamber is simultaneously serially connected on liquid injection pipe, and liquid injection pipe one end is connected with liquid-injection equipment, and the other end is with pressing intracapsular portion to connect；Wherein, level should
Power monitor is attached at the middle part pore of the lower body of rod, the horizontal direction of the positive arc of cambered surface housing facing to obturation；Vertically should
Power monitor is attached at the bottom pore of the lower body of rod, and the positive arc of cambered surface housing is face-up；
Symmetrically opened up on the body of rod of the middle part connecting rod of the measuring staff on the equidistant adjustment hole of two rows, the body of rod of the lower body of rod
Screw corresponding with adjustment hole is machined with, screw, which is installed, makes measuring staff be fixed in certain height after bolt.
In order that cambered surface housing non-resistance is pressurized, the case top and housing surrounding of cambered surface housing are designed as being flexibly connected.
Illustrate the method for the present invention below.
Above-mentioned goaf roof and floor deformation and the application method of obturation stress monitoring integrated apparatus, it is characterised in that
Step is as follows：
The first step：The field condition monitored as needed, determines that roof and floor monitors drilling depth；Wherein Roof Monitor drills
Depth should be not less than caving zone height, and caving zone is highly calculated by existing caving zone calculation formula；Bottom plate monitoring drilling depth Hf
Calculated according to A.S.Vesic formula：
Wherein, xp is to move towards plastic zone scope along working face,For floor rock internal friction angle；
Second step：Drilled according to the top of calculating, bottom plate monitoring drilling depth, the one of the mounting arrangements present invention after drilling
Body makeup is put；
Three stay-supported type displacement sensors are arranged first, and No. 1 sensor bracing wire for monitoring roof deformation is anchored into top plate prison
Survey after foot of hole from the threading hole introduction inner chamber of top plate fixed disk, draw and be connected on No. 1 sensor from the pore of the lower body of rod；
No. 3 sensor bracing wires of bottom deformation will be monitored, introduced after anchoring into bottom plate monitoring foot of hole from the threading hole of bottom plate fixed disk
Inner chamber, is connected on No. 3 sensors by drawing wire conduit from the pore extraction of the lower body of rod；The 2 of roof to floor convergence will be monitored
Number sensor bracing wire is connected on the binding post of bracing wire groove lower end, is risen along upper body of rod bracing wire groove, at the top of the connecting rod of middle part
After bracing wire guide is turned back, inner chamber is introduced from upper body of rod threading hole, then No. 2 sensors are connected to by the pore extraction of the lower body of rod
On；
The upper body of rod of measuring staff is stretched out, measuring staff height is adjusted by middle part connecting rod, makes measuring staff two ends and top, base top
Tightly, and ensure top, bottom fixed disk and threading hole it is consistent with drilling, two stress monitoring instruments are in obturation side, and pass through
Top fixed disk and bottom plate fixed disk are fixed with top, bottom plate；
By the intracapsular fluid injection of the pressure of topping-up pump to two sets of stress monitoring instruments to predetermined value, single-pass magnetic valve is closed；To reduce
Influence during filling to device with filler, it is necessary to bury stress monitoring instrument, and it is residing for horizontal stress monitor to bury height
Position；Mounting arrangements are finished；
3rd step：Displacement transducer bracing wire is tightened up, stress monitoring instrument, displacement monitor signal wire are accessed by data wire
Monitoring station, it is to be filled after be monitored；During working face filling mining, crush, bottom plate is heaved and obturation is applied
Pressure, will cause measuring staff to compress, is relatively moved between the upper body of rod and middle part connecting rod, make No. 1, No. 2 and No. 3 sensor bracing wire
Tensioning, produces displacement data signal, while two sets of stress monitoring instruments produce horizontal stress and vertical stress data-signal respectively；On
Data signal transmission is stated to monitoring station；Wherein, the Monitoring Data of No. 2 sensors is roof to floor convergence, the monitoring of No. 2 sensors
The Monitoring Data that data subtract No. 3 sensors is the deflection that top plate is directly pushed up, and the Monitoring Data of No. 1 sensor subtracts No. 3 biographies
The Monitoring Data of sensor is the deflection of top plate base object model, and the Monitoring Data of No. 3 sensors is the pucking amount of bottom plate.
Beneficial effects of the present invention are as follows：
(1) based on the agent set of three rod member compositions, goaf top plate and top bottom are obtained by displacement monitor
The deformation data of plate deep rock stratum；Deformation data includes deflection that roof to floor convergence, top plate directly push up, top plate base object model
The pucking amount of deflection and bottom plate；Obturation vertical stress and water are collected by two stress monitoring instruments for being additional to agent set
Horizontal stress data；
By these comprehensive monitoring data, to be fully understood by top plate and obturation interaction mechanism, top plate and obturation
Between stress and deformation relationship etc. provide reliable foundation；
(2) present apparatus simultaneously obturation vertical stress and horizontal stress are monitored, and stress monitoring point with it is mined out
Area's roof and floor deformation monitoring is in same point, with good correspondence；
(3) apparatus structure is simple, reliable, the roof and floor displacement being applicable under the conditions of different pack completeness and filling body stress
Monitoring, and avoid because obturation inhomogeneous deformation cause device tilt can not normal work situation.
Brief description of the drawings
Fig. 1 is overall structure diagram of the embodiment of the present invention；
Fig. 2 is the upper body of rod, middle part connection bar part right view in Fig. 1；
Fig. 3 is Tu1Zhong B areas enlarged drawing；
Fig. 4 is embodiment measuring staff bottom profile；
Fig. 5 is filling use state schematic diagram.
In figure：The upper bodies of rod of 1-, 2- top plate fixed disks, 3- crab-bolts, the bracing wire of 4a-1 sensors, the drawing of 4b-2 sensors
The body of rod, 9- bottom plate fixed disks, 10- under connecting rod in the middle part of line, the bracing wire of 4c-3 sensors, 5- coal bodies, 6-, 7- obturations, 8-
Displacement monitor, 11- bolts, 12- draws wire conduit, 13- adjustment holes, 14- horizontal stress monitors, the monitoring of 15- vertical stresses
Instrument, 16- bracing wire grooves, 17- grooves, 18- bracing wire guides, 19- binding posts, 20- pores, 21- cambered surface housings, 22- pressure capsules, 23-
Cambered surface housing, 24- liquid-pressure pick-ups, 25- single-pass magnetic valves, 26- liquid injection pipes, the drilling of 27- Roof Monitors, 28- bottom plates prison
Survey drilling.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings：
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of goaf roof and floor deformation and obturation stress monitoring integrated apparatus,
By the level of the displacement monitor 10 and monitoring filling body stress of measuring staff and the monitoring roof and floor displacement being attached on measuring staff
Stress monitoring instrument 14 and vertical stress monitor 15 are constituted.
Described measuring staff is set with is constituted successively by the upper body of rod 1,8 three hollow rods of middle part connecting rod 6 and the lower body of rod, upper boom
It relative can be slided in the connecting rod 6 of the insertion of body 1 middle part, certain height can be formed by regulation in the lower body of rod 8 of the insertion of middle part connecting rod 6
Degree；Adjustment structure is that the body of rod of middle part connecting rod 6 is symmetrically opened up 8 on the equidistant adjustment hole 13 of two rows, the body of rod of the lower body of rod 8
It is machined with and installs bolt 11 with the corresponding screw of adjustment hole 13, screw.
The middle part and bottom of the body of rod of the described lower body of rod 8 are respectively equipped with the pore 20 through body of rod both sides.
Described displacement monitor 10 is made up of three stay-supported type displacement sensors, and the bottom plate installed in the lower body of rod 8 is fixed
On disk 9；Three stay-supported type displacement sensors are represented with No. 1, No. 2 and No. 3 sensor respectively, are respectively used to the prison of roof deformation
Survey, the monitoring of roof to floor convergence and the monitoring of bottom deformation.
Described stress monitoring instrument has two sets, including horizontal stress monitor 14 and vertical stress monitor 15, uses respectively
In monitoring obturation horizontal stress and vertical stress；Stress monitoring instrument is by pressure capsule 22, cambered surface housing 23, liquid-pressure pick-up
24th, liquid injection pipe 26 and single-pass magnetic valve 25 are constituted；The case top and housing surrounding of cambered surface housing 23 are designed as being flexibly connected；Arc
Face-piece body 23 is buckled in the pressure for being used to bear obturation on pressure capsule 22, and liquid-pressure pick-up 24 is placed in inside pressure capsule 22, liquid
Pressure signal is sent to the controller of monitoring station and single-pass magnetic valve 25；Liquid injection pipe 26 passes through the lower body of rod 8, and single-pass magnetic valve 25 is put
In the lower inner chamber of the body of rod 8 and be serially connected on liquid injection pipe 26, the one end of liquid injection pipe 26 is connected with liquid-injection equipment, the other end with inside pressure capsule 22
Connection；Wherein, horizontal stress monitor 14 is attached at the middle part pore of the lower body of rod 8, the cambered surface shell of horizontal stress monitor 14
Horizontal direction of the positive arc of body facing to obturation；Vertical stress monitor 15 is attached at the bottom pore of the lower body of rod 8, vertically
The positive arc of the cambered surface housing of stress monitoring instrument 15 is face-up.
The described top of the upper body of rod 1 is provided with to offer in the middle of top plate fixed disk 2, top plate fixed disk 2 to be communicated with measuring staff inner chamber
The bracing wire 4a for being used for No. 1 sensor threading hole, by top plate fixed disk 2 measuring staff upper end can be made to be fixed on top plate；Lower beam
The bottom of body 8 is provided with the drawing for No. 3 sensors for offering and being communicated with measuring staff inner chamber in the middle of bottom plate fixed disk 9, bottom plate fixed disk 9
Line 4c threading hole, can be such that measuring staff lower end is fixed on bottom plate by bottom plate fixed disk 9.
The described upper body of rod 1 opens up the bracing wire groove 16 passed through for the bracing wire 4b of No. 2 sensors, the lower end of bracing wire groove 16 vertically
Provided with the binding post 19 and the threading hole into the upper inner chamber of the body of rod 1 for fixing No. 2 sensor bracing wire terminations；Described middle part connecting rod
It is provided with the top of 6 body of rod in groove 17, groove 17 and is provided with bracing wire guide 18, and it is corresponding with the bracing wire groove 16 of the upper body of rod 1；Draw
Wire casing 16, binding post 19 and bracing wire guide 18 are used for the bracing wire 4b for installing No. 2 sensors.
As shown in figure 5, above-mentioned goaf roof and floor deformation and the application method of obturation stress monitoring integrated apparatus, step
It is rapid as follows：
The first step：The field condition monitored as needed, determines that roof and floor monitors drilling depth；Wherein Roof Monitor drills
27 depth should be not less than caving zone height, and caving zone is highly calculated by existing caving zone calculation formula；Bottom plate monitoring drilling 28 is deep
Spend HfCalculated according to A.S.Vesic formula：
Wherein, xpTo move towards plastic zone scope along working face,For floor rock internal friction angle；
Second step：Drilled according to the top of calculating, bottom plate monitoring drilling depth, mounting arrangements are integrally disguised after drilling
Put；
Three stay-supported type displacement sensors are arranged first, and the bracing wire 4a that will monitor No. 1 sensor of roof deformation anchors into top
Plate monitoring drilling introduces inner chamber behind 27 bottoms from the threading hole of top plate fixed disk 2, is drawn from the pore 20 of the lower body of rod 8 and is connected to 1
On number sensor；The bracing wire 4c for No. 3 sensors that bottom deformation will be monitored is anchored into after bottom plate monitors 28 bottoms of drilling to be consolidated from bottom plate
The threading hole of price fixing 9 introduces inner chamber, is connected to by drawing wire conduit 12 from the extraction of pore 20 of the lower body of rod 8 on No. 3 sensors；
The bracing wire 4b that No. 2 sensors of roof to floor convergence will be monitored is fastened on binding post 19, along along upper body of rod bracing wire groove 16
Rise, after being turned back through the bracing wire guide 18 in middle part connecting rod groove 17, inner chamber is introduced from the upper bracing wire hole of the body of rod 1, then by lower beam
The pore 20 of body is drawn and is connected on No. 2 sensors；
The upper body of rod 1 of measuring staff is stretched out, measuring staff height is adjusted by middle part connecting rod 6, is fixed with bolt 11, makes measuring staff two
End is held out against with top, bottom plate, and ensures that top, the threading hole of bottom fixed disk 2 and 9 are consistent with drilling, and two stress monitoring instruments, which are in, to be filled
Body side is filled out, and is fixed by pushing up fixed disk 2 and bottom plate fixed disk 9 with crab-bolt 3 with top, bottom plate；
By topping-up pump, into the pressure capsule 22 of two sets of stress monitoring instruments, fluid injection, to predetermined value, closes single-pass magnetic valve 25；For
Influence when reducing filling to device is, it is necessary to bury stress monitoring instrument with filler, and it is horizontal stress monitoring to bury height
The present position of instrument 14；Mounting arrangements are finished；
3rd step：The bracing wire of three displacement transducers is tightened up, by horizontal stress monitor 14, the and of vertical stress monitor 15
The signal wire of displacement monitor 10 by data wire access monitoring station, it is to be filled after be monitored；Opened in the filling of working face coal body 5
During adopting, crush, bottom plate is heaved and obturation 7 is pressed, and measuring staff will be caused to compress, the upper body of rod 1 and middle part connecting rod 6
Between relatively move, make bracing wire 4a, 4b and 4c tensioning of No. 1, No. 2 and No. 3 sensor, produce displacement data signal, make
Horizontal stress monitor 14 and vertical stress monitor 15 produce horizontal stress and vertical stress data-signal respectively；Above-mentioned data
Signal is transferred to monitoring station；Wherein, the Monitoring Data of No. 2 sensors is roof to floor convergence, and the Monitoring Data of No. 2 sensors subtracts
The Monitoring Data for removing No. 3 sensors is the deflection that directly pushes up of top plate, and the Monitoring Data of No. 1 sensor subtracts No. 3 sensors
Monitoring Data is the deflection of top plate base object model, and the Monitoring Data of No. 3 sensors is the pucking amount of bottom plate.
Claims (3)
1. a kind of goaf roof and floor deformation and obturation stress monitoring integrated apparatus, it is characterised in that by measuring staff and attachment
The displacement monitor of monitoring roof and floor displacement on measuring staff and the stress monitoring instrument composition of monitoring filling body stress；
Described displacement monitor is made up of the displacement transducer of three stay-supporteds, on the fixed disk for being installed in the lower body of rod, point
Not Yong Yu roof deformation, roof to floor convergence and bottom deformation monitoring, successively by No. 1 sensor, No. 2 sensors, No. 3 sensings
Device is monitored；
Described stress monitoring instrument has two sets, is respectively used to monitoring obturation horizontal stress and vertical stress；
Described measuring staff is set with is constituted successively by the upper body of rod, three hollow rods of middle part connecting rod and the lower body of rod, upper body of rod insertion
It relative can be slided in the connecting rod of middle part, certain height can be formed by regulation in the lower body of rod of middle part connecting rod insertion；Under described
The middle part and bottom of the body of rod are respectively equipped with the pore through body of rod both sides；Fixed at the top of the described upper body of rod provided with strip top plate
The threading hole that No. 1 sensor bracing wire passes through that is used for communicated with measuring staff inner chamber is offered in the middle of disk, top plate fixed disk, passes through top plate
Fixed disk can be such that measuring staff upper end is fixed on top plate；Lower post is provided with the middle of bottom plate fixed disk, bottom plate fixed disk and offered
What is communicated with measuring staff inner chamber is used for the threading hole of No. 3 sensor bracing wires, by bottom plate fixed disk measuring staff lower end can be made to be fixed on bottom
On plate；The bracing wire groove of No. 2 sensor bracing wires is offered on the external wall length direction of described upper boom, bracing wire groove lower end is provided with fixation
The binding post and the threading hole into upper boom intracoelomic cavity of No. 2 sensor bracing wire terminations；At the top of the body of rod of described middle part connecting rod
Provided with bracing wire guide；
Described stress monitoring instrument, by pressure capsule, cambered surface housing, liquid-pressure pick-up, liquid injection pipe and single-pass solenoid valve block into；Arc
Face-piece body is buckled in the pressure for being used to bear obturation on pressure capsule, and liquid-pressure pick-up is placed in the intracapsular portion of pressure, fluid pressure signal
It is sent to the controller of monitoring station and single-pass magnetic valve；Liquid injection pipe passes through the lower body of rod, and single-pass magnetic valve is placed in lower beam intracoelomic cavity simultaneously
It is serially connected on liquid injection pipe, liquid injection pipe one end is connected with liquid-injection equipment, the other end is with pressing intracapsular portion to connect；Wherein, horizontal stress is supervised
Survey instrument to be attached at the middle part pore of the lower body of rod, the horizontal direction of the positive arc of cambered surface housing facing to obturation；Vertical stress is supervised
Survey instrument to be attached at the bottom pore of the lower body of rod, the positive arc of cambered surface housing is face-up；
Symmetrical open up is processed on the equidistant adjustment hole of two rows, the body of rod of the lower body of rod on the body of rod of the middle part connecting rod of the measuring staff
There is screw corresponding with adjustment hole, screw, which is installed, makes measuring staff be fixed in certain height after bolt.
2. goaf as claimed in claim 1 roof and floor deformation and obturation stress monitoring integrated apparatus, it is characterised in that
The case top and housing surrounding of described cambered surface housing are designed as being flexibly connected.
Carried out 3. a kind of integrated apparatus using described in claim 1 or 2 is deformed to goaf roof and floor with filling body stress
The method of monitoring, it is characterised in that
The first step：The field condition monitored as needed, determines that roof and floor monitors drilling depth；Wherein Roof Monitor drilling depth
Should be not less than caving zone height, caving zone is highly calculated by existing caving zone calculation formula；Bottom plate monitoring drilling depth HfAccording to
A.S.Vesic formula are calculated：
Wherein, xpTo move towards plastic zone scope along working face,For floor rock internal friction angle；
Second step：Drilled according to the top of calculating, bottom plate monitoring drilling depth, mounting arrangements integrated apparatus after drilling；
Three stay-supported type displacement sensors are arranged first, and No. 1 sensor bracing wire for monitoring roof deformation is anchored into Roof Monitor bores
Inner chamber is introduced from the threading hole of top plate fixed disk behind bottom hole portion, draws and is connected on No. 1 sensor from the pore of the lower body of rod；Will prison
No. 3 sensor bracing wires of bottom deformation are surveyed, inner chamber is introduced from the threading hole of bottom plate fixed disk after anchoring into bottom plate monitoring foot of hole,
It is connected to by drawing wire conduit from the pore extraction of the lower body of rod on No. 3 sensors；No. 2 sensings of roof to floor convergence will be monitored
Device bracing wire is connected on the binding post of bracing wire groove lower end, is risen along upper body of rod bracing wire groove, is led through the bracing wire at the top of the connecting rod of middle part
After being turned back to part, inner chamber is introduced from upper body of rod threading hole, then be connected on No. 2 sensors by the pore extraction of the lower body of rod；
The upper body of rod of measuring staff is stretched out, measuring staff height is adjusted by middle part connecting rod, measuring staff two ends is held out against with top, bottom plate, and
Ensure top, bottom fixed disk and threading hole it is consistent with drilling, two stress monitoring instruments are in obturation side, and pass through to push up and fix
Disk and bottom plate fixed disk are fixed with top, bottom plate；
By the intracapsular fluid injection of the pressure of topping-up pump to two sets of stress monitoring instruments to predetermined value, single-pass magnetic valve is closed；To reduce filling
When influence to device, it is necessary to use filler to bury stress monitoring instrument, it is horizontal stress monitor present position to bury height；
Mounting arrangements are finished；
3rd step：Displacement transducer bracing wire is tightened up, stress monitoring instrument, displacement monitor signal wire are accessed by data wire and monitored
Stand, it is to be filled after be monitored；During working face filling mining, crush, bottom plate is heaved and obturation is pressed, will
Cause measuring staff to compress, relatively moved between the upper body of rod and middle part connecting rod, make No. 1, No. 2 and No. 3 sensor bracing wire tensioning,
Displacement data signal is produced, while two sets of stress monitoring instruments produce horizontal stress and vertical stress data-signal respectively；Above-mentioned number
It is believed that number being transferred to monitoring station；Wherein, the Monitoring Data of No. 2 sensors is roof to floor convergence, the Monitoring Data of No. 2 sensors
The Monitoring Data for subtracting No. 3 sensors is the deflection that top plate is directly pushed up, and the Monitoring Data of No. 1 sensor subtracts No. 3 sensors
Monitoring Data be top plate base object model deflection, the Monitoring Datas of No. 3 sensors is the pucking amount of bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710695470.8A CN107328385B (en) | 2017-08-15 | 2017-08-15 | Goaf top and bottom plate deformation and filling body stress monitoring integrated device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710695470.8A CN107328385B (en) | 2017-08-15 | 2017-08-15 | Goaf top and bottom plate deformation and filling body stress monitoring integrated device and method |
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| Publication Number | Publication Date |
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| CN107328385A true CN107328385A (en) | 2017-11-07 |
| CN107328385B CN107328385B (en) | 2023-04-18 |
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| CN201710695470.8A Active CN107328385B (en) | 2017-08-15 | 2017-08-15 | Goaf top and bottom plate deformation and filling body stress monitoring integrated device and method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051125A (en) * | 2017-12-06 | 2018-05-18 | 中国矿业大学(北京) | A kind of closed goaf caving zone stress field evolution measurement method |
| CN109441541A (en) * | 2018-11-06 | 2019-03-08 | 中国矿业大学 | A kind of coal mine gob filling body carrying compression ratio monitoring system and its monitoring method |
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| CN109441541A (en) * | 2018-11-06 | 2019-03-08 | 中国矿业大学 | A kind of coal mine gob filling body carrying compression ratio monitoring system and its monitoring method |
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| CN110514093A (en) * | 2019-09-23 | 2019-11-29 | 山东科技大学 | A kind of wide range roof to floor convergence tester and its application method |
| CN110514093B (en) * | 2019-09-23 | 2024-05-24 | 山东科技大学 | Wide-range top-bottom plate approaching amount tester and use method thereof |
| CN110793672A (en) * | 2019-11-13 | 2020-02-14 | 大同煤矿集团有限责任公司 | Ultra-thick coal seam fully mechanized caving mining device based on bottom plate deformation monitoring system |
| CN112800597A (en) * | 2021-01-13 | 2021-05-14 | 安徽马钢张庄矿业有限责任公司 | Intelligent fine efficient ecological mining analysis method for high and middle segments of mine resources |
| CN112800597B (en) * | 2021-01-13 | 2022-09-13 | 安徽马钢张庄矿业有限责任公司 | Intelligent fine efficient ecological mining analysis method for high and middle segments of mine resources |
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