CN108952679A - Drilling hole stress directional monitoring device and method - Google Patents
Drilling hole stress directional monitoring device and method Download PDFInfo
- Publication number
- CN108952679A CN108952679A CN201811100848.6A CN201811100848A CN108952679A CN 108952679 A CN108952679 A CN 108952679A CN 201811100848 A CN201811100848 A CN 201811100848A CN 108952679 A CN108952679 A CN 108952679A
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- China
- Prior art keywords
- stress
- drilling
- mounting rod
- strain gauge
- control apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000005553 drilling Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012806 monitoring device Methods 0.000 title claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims abstract description 24
- 239000003245 coal Substances 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000011156 evaluation Methods 0.000 abstract 1
- 238000005065 mining Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- 239000010883 coal ash Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
- E21B47/017—Protecting measuring instruments
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A kind of drilling hole stress directional monitoring device and method.Device is made of pressure data Acquisition Instrument, conducting wire, pressure sensor, direction-control apparatus and protective shell.Direction-control apparatus is by bearing and with being reconstructed into；Protective shell is made of the pvc pipe and steel wire cut.By counterweight identified sign measurement direction, pressure sensor is kept not change in direction during being advanced in drilling by direction-control apparatus, and then accurately measure direction and the size of coal road internal drilling stress.Structure and method are simple, are easy to execute-in-place, the dynamic change of energy real-time monitoring drilling hole stress size, to realize the real-time testing to drilling hole stress, evaluation.
Description
Technical field
The present invention relates to a kind of device and method for measuring rock body drilled stress, especially a kind of drilling hole stress directional monitorings
Device and method.
Background technique
Rich coal resources in China, distributional region is wide, and stresses re-distribution generation can be caused to adopt in mining process and answered
Power accurately measures the size and Orientation of mining induced stress, is selection support pattern, guarantees the premise of digging safety.Into 21 generation
It records, world's superficial part mining mineral resource is petered out, and domestic and international mining mineral resource gradually turns to deep, the number of km depth mine
Amount is stepped up.Deep mining activity at present is ahead of deep mining fundamental research, specifically for the basis of deep resource
Theory is not set up simultaneously.Therefore extremely urgent for the innovation and development of rock mechanics indepth and mining science theory.With exploitation
The increase of depth, crustal stress level are continuously improved, and horizontal crustal stress and the ratio of vertical crustal stress are different with superficial part, into deep
After exploitation, while bearing high-ground stress, most of tunnels will be subjected to strong bearing stress caused by great excavation
Effect, makes the roadway surrounding rock stress several times by mining influence, even closely decuples the stress of primary rock.Deep mining can also generate strongly
Unloading Effect, to tunnel generate strong disturbance, increase supporting difficulty.Currently, since the drilling in coal road is shorter using length
Drilling rod drill out, bore path is tortuous, and coal ash is more, and traditional borehole stressmeter is unable to control stress biography in inside push
The direction of sensor can not accurately measure the drilling hole stress of assigned direction.Therefore directional monitoring drilling hole stress is significant, Ke Yigeng
Good instructs support pattern, guarantees digging safety.
Summary of the invention
Technical problem: the purpose of the present invention is being directed in coal road to measure practical problem existing for drilling hole stress, the one of proposition
Kind low cost, easy to operate, drilling hole stress directional monitoring device and method.
Technical solution: drilling hole stress directional monitoring device of the invention, including stress data acquisition instrument, conducting wire, stress pass
Sensor, direction-control apparatus and protective shell；Strain gauge is connected by conducting wire with stress data acquisition instrument, direction-control apparatus
It is mounted on strain gauge, protective shell is mounted on except direction-control apparatus.
The direction-control apparatus, including two bearings and a counterweight；Two bearings are fixed on strain gauge
Both ends keep the stress induction area on strain gauge to remain unchanged in direction during equipment is promoted into drilling, axis
The internal diameter held should be slightly bigger than the outer diameter of strain gauge, and the steel ball in bearing should be equipped with protection, and lubricating oil should be used before use
It is adequately lubricated, actual effect under the influence of coal ash is avoided；Counterweight is the suitable iron block of a size, by the way that counterweight to be fixed on
Strain gauge side makes the stress induction area on strain gauge be in defined direction.
The protective shell includes the pvc pipe and steel wire cut；By the circumferential trisection of pvc pipe, respectively in equal part
Identical width is cropped at line position, end position part retains, and it is whole for making pvc pipe still；Steel wire is fixed on PVC again
The assembling of tube outside completion protective shell；The pvc pipe should have certain intensity and torsional strength, can satisfy push process
In the pvc pipe that does not twist, while cutting may insure sufficiently be filled out between strain gauge and protective shell when slip casting
It fills；
The strain gauge is cylinder, and front end is equipped with tip convenient for pushing into drilling, and diameter is 40~50mm, long
Degree is 200~300mm；
The stress data acquisition instrument has 4 channels, can acquire the data of 4 sensors, the data of acquisition simultaneously
Data can be stored in real time by usb data reservoir, can also be supervised by standard signal output interface and existing KJ safety of coal mines
Examining system substation connection, by real-time data transmission to ground.
Drilling hole stress monitoring method of the invention, includes the following steps:
A. place of drilling, this coal bed drilling stress test hole of constructing are selected；
B. bearing is fixed on strain gauge both ends, sufficient lubrication bearing ball；
C., counterweight is fixed on to certain side of strain gauge, so that stress test direction is in defined direction, then will
Direction-control apparatus is placed in protective shell；
D. borehole stressmeter is placed on aperture, then picks out the mounting rod that end has bayonet, mounting rod bayonet is female
Head is connect with strain gauge bayonet male connector, inwardly promotes mounting rod；
E. the bayonet of mounting rod is connected with next mounting rod with nut and screw, continues to send pipe into hole；
F. it connects in the same way, send pipe, until strain gauge is advanced into designated depth；
G. it rotates counterclockwise and firmly pulls out mounting rod outward, and take out mounting rod section by section, and keep mounting rod company
Connected nut and screw；
H. cement slurry injection hole sealing is used；
I. data collecting instrument and each pipeline are connected, writes down borehole stressmeter factory number, initial reading and peace
Fill depth.
The advantage is that:
(1) by measurement direction control device, the disadvantage that traditional strain gauge is unable to control stress test direction is overcome
End, and then significantly more efficient coal roadway support is instructed to practice；
(2) data collecting instrument uses 4 channels, has saved Acquisition Instrument number, has reduced the manufacturing cost of device；
(3) data collecting instrument can store data by USB interface and in real time by standard signal output interface and KJ coal
Mine safety monitoring system is connected, and enables staff that can monitor drilling hole stress on well, when data, which are transmitted, to break down,
The data that USB can be called to store in real time, it is unlikely monitoring blind area occur；
(4) structure is simple, and manufacturing cost is low, easy to operate, high reliablity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of drilling hole stress directional monitoring device of the present invention.
Fig. 2 is the main view of protective shell in Fig. 1
In figure, 1, data collecting instrument；2, conducting wire；3, strain gauge；4, bearing；5, counterweight；6, pvc pipe；7, steel wire.
Specific embodiment
Example of the present invention is described further with reference to the accompanying drawing:
Embodiment 1: the test device, including stress data acquisition instrument 1, conducting wire 2, strain gauge 3, direction-control apparatus
And protective shell；Strain gauge 3 is connected by conducting wire 2 with stress data acquisition instrument 1, and direction-control apparatus is mounted on stress sensing
On device 3, protective shell is mounted on except direction-control apparatus.
The direction-control apparatus, including two bearings 4 and a counterweight 5；Two bearings 4 are fixed on stress sensing
The both ends of device 3 come keep the stress induction area on strain gauge 3 during equipment is promoted into drilling direction keep not
Become, the internal diameter of bearing 4 should be slightly bigger than the outer diameter of strain gauge 3, and the steel ball in bearing 4 should be equipped with protection, should make before use
It is adequately lubricated with lubricating oil, avoids actual effect under the influence of coal ash；Counterweight 5 be the suitable iron block of a size, pass through by
Counterweight 5 is fixed on certain side of strain gauge 3, and the stress induction area on strain gauge 3 is made to be in defined direction.
The protective shell includes the pvc pipe 6 and steel wire 7 cut；By the circumferential trisection of pvc pipe 6, waiting respectively
Identical width is cropped at separated time position, end position part retains, and it is whole for making pvc pipe 6 still；It is again that steel wire 7 is fixed
The assembling of protective shell is completed outside pvc pipe 6；The pvc pipe 6 should have certain intensity and torsional strength, can satisfy
The pvc pipe 6 for not twisting during push, while cutting may insure when slip casting between strain gauge 3 and protective shell
It can be fully filled；
The strain gauge 3 is cylinder, and front end is equipped with tip convenient for pushing into drilling, and diameter is 40~50mm,
Length is 200~300mm；
The stress data acquisition instrument 1 has 4 channels, can acquire the data of 4 sensors, the data of acquisition simultaneously
Data can be stored in real time by usb data reservoir, can also be supervised by standard signal output interface and existing KJ safety of coal mines
Examining system substation connection, by real-time data transmission to ground.
Drilling hole stress monitoring method of the invention, includes the following steps:
A. place of drilling, this coal bed drilling stress test hole of constructing are selected；
B. bearing 4 is fixed on 3 both ends of strain gauge, sufficient lubrication bearing ball；
C., counterweight 5 is fixed on to certain side of strain gauge 3, so that stress test direction is in defined direction, then
Direction-control apparatus is placed in protective shell；
D. borehole stressmeter is placed on aperture, then picks out the mounting rod that end has bayonet, mounting rod bayonet is female
Head is connect with strain gauge bayonet male connector, inwardly promotes mounting rod；
E. the bayonet of mounting rod is connected with next mounting rod with nut and screw, continues to send pipe into hole；
F. it connects in the same way, send pipe, until strain gauge is advanced into designated depth；
G. it rotates counterclockwise and firmly pulls out mounting rod outward, and take out mounting rod section by section, and keep mounting rod company
Connected nut and screw；
H. cement slurry injection hole sealing is used；
I. data collecting instrument 4 and each pipeline are connected, writes down borehole stressmeter factory number, initial reading and peace
Fill depth.
Drilling hole stress test device of the invention mainly includes stress data acquisition instrument 1, conducting wire 2, strain gauge 3, side
To control device and protective shell.Stress data acquisition instrument 1 has 4 channels, can acquire the data of 4 sensors simultaneously, acquisition
Data can store in real time data by usb data reservoir, standard signal output interface and existing KJ coal mine can also be passed through
Safety monitoring system substation connection, by real-time data transmission to ground.The length of conducting wire 2 should be greater than test depth.Stress sensing
Device 3 is cylinder, and front end is equipped with tip convenient for pushing into drilling, and diameter is 40~50mm, and length is 200~300mm.Direction control
Device processed includes two bearings 4 and a counterweight 5.Protective shell includes the pvc pipe 6 and steel wire 7 cut, by the ring of pvc pipe 6
To trisection, identical width is cropped at equal part line position respectively, end position part retains, and it is whole for making pvc pipe 6 still
Body；Steel wire 7 is fixed on to the assembling that protective shell is completed outside pvc pipe 6 again；The pvc pipe 6 should have certain intensity and
Torsional strength can satisfy push and not twist in the process,.
Drilling hole stress test method of the invention, firstly, the drilling hole stress instrument connection for the 30m that constructs in this coal seam, with this
Bearing 4 is fixed on 3 both ends of strain gauge simultaneously, counterweight 5 is fixed on strain gauge 3 by the ball of sufficient lubrication bearing 4
Certain side so that stress test direction is in horizontal direction, then protective shell is fixed on outside direction-control apparatus.It will bore later
Hole stress meter is placed on aperture, then picks out the 2m long every mounting rod that end has bayonet, by mounting rod bayonet female head and
The connection of 3 bayonet male connector of strain gauge, inwardly promotes mounting rod, by the bayonet of mounting rod and next mounting rod nut and spiral shell
Nail is connected, and continues to send pipe into hole, connect in the same way, send pipe, strain gauge is advanced into finger by totally 15 installing pipes
Depthkeeping degree.Later, it rotates counterclockwise and firmly pulls out mounting rod outward, and take out mounting rod section by section, and keep mounting rod
Attaching nut and screw.Later, with cement slurry injection hole sealing.Finally, data collecting instrument 1 and each pipeline are connected, write down
Borehole stressmeter factory number, initial reading and fitting depth.
Claims (6)
1. a kind of drilling hole stress directional monitoring device, it is characterized in that: the device includes pressure data Acquisition Instrument, conducting wire, pressure biography
Sensor, direction-control apparatus and protective shell；Pressure sensor is connected by conducting wire with pressure data Acquisition Instrument, direction-control apparatus
It is mounted on pressure sensor, protective shell is mounted on except direction-control apparatus.
2. according to drilling hole stress directional monitoring device described in right 1, it is characterized in that: the pressure data Acquisition Instrument has 4
Channel can acquire the data of 4 sensors simultaneously, and the data of acquisition can store in real time data by usb data reservoir,
It can be connect by standard signal output interface with existing KJ Coal Mine Safety Monitoring System substation, by real-time data transmission to ground
Face.
3. according to drilling hole stress directional monitoring device described in right 1, it is characterized in that: the pressure sensor is cylinder,
Front end is equipped with tip convenient for pushing into drilling, and diameter is 40~50mm, and length is 200~300mm.
4. according to drilling hole stress directional monitoring device described in right 1, it is characterized in that: the direction-control apparatus includes two
Bearing and a counterweight；Two bearings are fixed on the both ends of strain gauge to keep the stress induction area on strain gauge
Direction remains unchanged during equipment is promoted into drilling；Counterweight is the suitable iron block of a size, by fixing counterweight
In strain gauge side, the stress induction area on strain gauge is made to be in defined direction.
5. according to drilling hole stress directional monitoring device described in right 1, it is characterized in that: the protective shell includes cutting
Pvc pipe and steel wire；By the circumferential trisection of pvc pipe, identical width, end position are cropped at equal part line position respectively
Part retains, and it is whole for making pvc pipe still；Steel wire is fixed on to the assembling that protective shell is completed outside pvc pipe again；The PVC
Pipe should have certain intensity and torsional strength, can satisfy push and do not twist in the process, while the pvc pipe cut can
It can be fully filled between strain gauge and protective shell when ensuring slip casting.
6. a kind of drilling hole stress directional monitoring device, it is characterized in that: including the following steps
A. place of drilling, this coal bed drilling stress test hole of constructing are selected；
B. bearing is fixed on pressure sensor both ends, sufficient lubrication bearing ball；
C., counterweight is fixed on to certain side of pressure sensor, so that stress test direction is in the direction of requirement, then will protection
Shell is fixed on outside direction-control apparatus；
D. borehole stressmeter is placed on aperture, then pick out end have bayonet mounting rod, by mounting rod bayonet female head with
The connection of pressure sensor bayonet male connector, inwardly promotes mounting rod；
E. the bayonet of mounting rod is connected with next mounting rod with nut and screw, continues to send pipe into hole；
F. it connects in the same way, send pipe, until pressure sensor is advanced into designated depth；
G. it will rotate counterclockwise and firmly pull out mounting rod outward, and take out mounting rod section by section, and keep mounting rod connection
Nut and screw；
H. cement slurry injection hole sealing is used；
I. data collecting instrument and each pipeline are connected, it is deep writes down borehole stressmeter factory number, initial reading and installation
Degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100848.6A CN108952679A (en) | 2018-09-20 | 2018-09-20 | Drilling hole stress directional monitoring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811100848.6A CN108952679A (en) | 2018-09-20 | 2018-09-20 | Drilling hole stress directional monitoring device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108952679A true CN108952679A (en) | 2018-12-07 |
Family
ID=64471903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811100848.6A Pending CN108952679A (en) | 2018-09-20 | 2018-09-20 | Drilling hole stress directional monitoring device and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108952679A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107280A (en) * | 2019-04-10 | 2019-08-09 | 中国水利水电科学研究院 | Sensor, method is installed in monoblock type positioning and directing hole |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513016A (en) * | 2013-10-21 | 2014-01-15 | 武汉大学 | Detection method for soft rock multi-point ground stress by adopting sensing columns |
| CN103512693A (en) * | 2013-10-08 | 2014-01-15 | 中国矿业大学 | Coal and rock mass stress orientation monitoring method and device |
| CN205642679U (en) * | 2016-05-06 | 2016-10-12 | 中国矿业大学(北京) | Novel ground stress test device |
| US20170122822A1 (en) * | 2014-08-04 | 2017-05-04 | China University Of Mining And Technology | Multipoint Coal and Rock Mass Stress Real-Time Monitoring Device and Method |
-
2018
- 2018-09-20 CN CN201811100848.6A patent/CN108952679A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512693A (en) * | 2013-10-08 | 2014-01-15 | 中国矿业大学 | Coal and rock mass stress orientation monitoring method and device |
| CN103513016A (en) * | 2013-10-21 | 2014-01-15 | 武汉大学 | Detection method for soft rock multi-point ground stress by adopting sensing columns |
| US20170122822A1 (en) * | 2014-08-04 | 2017-05-04 | China University Of Mining And Technology | Multipoint Coal and Rock Mass Stress Real-Time Monitoring Device and Method |
| CN205642679U (en) * | 2016-05-06 | 2016-10-12 | 中国矿业大学(北京) | Novel ground stress test device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107280A (en) * | 2019-04-10 | 2019-08-09 | 中国水利水电科学研究院 | Sensor, method is installed in monoblock type positioning and directing hole |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20181207 |