CN116182668A - Measuring device for monitoring coal mine tunnel roof deflection - Google Patents
Measuring device for monitoring coal mine tunnel roof deflection Download PDFInfo
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- CN116182668A CN116182668A CN202310451815.0A CN202310451815A CN116182668A CN 116182668 A CN116182668 A CN 116182668A CN 202310451815 A CN202310451815 A CN 202310451815A CN 116182668 A CN116182668 A CN 116182668A
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- roof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention relates to the technical field of measuring devices, in particular to a measuring device for monitoring the deviation of a top plate of a coal mine tunnel, which comprises a top plate and a tunnel, wherein the top plate is supported on the top wall of the tunnel, auxiliary hydraulic support rods are arranged on two sides of the top plate, main hydraulic support rods are arranged at the middle position of the bottom of the top plate, measuring columns are connected on two sides of the main hydraulic support rods, scale marks are arranged on the outer walls of the measuring columns, mounting blocks are sleeved at one ends of the measuring columns, a cavity is formed in one end, far away from the measuring columns, of each mounting block, a winding disc is rotatably arranged in the cavity, a rope is wound on the winding disc, one side of each mounting block is provided with a telescopic rod, one end of each mounting block is fixedly provided with an end plate, one side of each end plate is rotatably provided with a marking rod, each winding disc is connected with the marking rod, a plurality of preset holes are formed in the top wall of the tunnel, and the upper ends of the telescopic rods and the mounting sleeves are inserted into the preset holes. The invention does not need to manually measure by using tools one by one, is convenient and visual to observe, and prevents safety accidents.
Description
Technical Field
The invention relates to the technical field of measuring devices, in particular to a measuring device for monitoring the deviation of a roof of a coal mine tunnel.
Background
When the coal mine tunnel is mined, the internal support is needed, wherein the top support is particularly important, the top surface of the top support is usually reinforced by a top plate, the phenomenon that the coal mine tunnel is dropped by ore or is collapsed is avoided, the top plate of the tunnel possibly deflects and sinks along with the extrusion of rocks in the tunnel when the top plate of the tunnel is supported, the top plate is needed to be monitored, and serious safety accidents caused by overlarge deflection are avoided.
At present, the tunnel roof support offset mainly depends on manual periodic measurement record, manual measurement can possibly cause omission, the workload is large, certain errors exist, the tunnel roof support offset is manually observed through a staff gauge, but coal ash in the tunnel is more, the coal ash is adhered to the surface of the staff gauge very quickly, and the coal ash cannot be watched.
Disclosure of Invention
Therefore, the invention aims to provide a measuring device for monitoring the drift of a coal mine tunnel roof, so as to solve the problems of omission and large workload of the conventional manual measurement of tunnel roof supports one by one.
Based on the above purpose, the invention provides a measuring device for monitoring the deviation of the roof of a coal mine tunnel.
The utility model provides a measuring device for monitoring colliery tunnel roof skew, includes roof, tunnel, the roof supports in the tunnel roof, the roof both sides all are equipped with auxiliary hydraulic support pole, roof bottom intermediate position department is equipped with main hydraulic support pole, and main hydraulic support pole both sides all are connected with the measurement post, the measurement post outer wall is equipped with the scale mark, measurement post one end all overlaps and is equipped with the installation piece, and the installation piece is kept away from measurement post one end and all is opened there is the cavity, and the cavity internal rotation is equipped with the rolling dish, winds the back rope on the rolling dish, and it has the round hole to open on the installation piece, and rope one end passes the round hole and be fixed with the installation cover, the telescopic link is installed to installation piece one side, and the telescopic link is the inside cavity of both ends opening, and the rope runs through the telescopic link, and the installation cover activity inserts and locate the telescopic link upper end, installation piece one end all is fixed with the end plate, and end plate one side all rotates and is equipped with the marking the pole and is connected, the rolling dish drives the marking pole when rolling dish is received and is opened a plurality of predetermineeing the hole, telescopic link upper end and installation cover all insert and predetermine downthehole, predetermine hole, all be equipped with locking mechanism between telescopic link upper end, the installation cover and the equal locking mechanism.
Further, the roof divide into arc portion, horizontal part, arc portion both ends and horizontal part both ends welding, the welding has a plurality of strengthening ribs between arc portion, the horizontal part, horizontal part intermediate position department is opened there is the through-hole, main hydraulic support pole runs through the through-hole, auxiliary hydraulic support pole upper end supports in the horizontal part, main hydraulic support pole upper end supports in the arc portion.
Further, the circular slot is all opened to installation piece one end, and two measuring column one ends are slided respectively and are located two circular slots, the switch of dabbing is all installed to circular slot one end inner wall, alarm lamp is all installed to installation piece one side outer wall, and two switch of dabbing control two alarm lamps respectively and open and close.
Further, one side of the winding disc is connected with a driving gear, one side in the cavity is rotationally provided with a driven gear, the driving gear is meshed with the driven gear, and the driven gear is connected with the marking rod through a connecting shaft.
Further, the inner wall of one side of the cavity is fixed with a fixed disc, a coil spring is arranged in the fixed disc, a pin shaft is coaxially fixed on one side of the winding disc, the other end of the pin shaft is rotationally arranged in the fixed disc, and two ends of the coil spring are respectively fixed on the fixed disc and the pin shaft.
Further, the telescopic rod is divided into a fixed part and a movable part, the fixed part is fixed on the installation block, the movable part is sleeved on the upper end of the fixed part in a sliding manner, and the installation sleeve is inserted on the upper end of the movable part.
Further, locking mechanism includes a plurality of fixture blocks, and a plurality of fixture blocks all rotate and locate installation cover round outer wall, the cover is equipped with first sleeve pipe, second sleeve pipe on the movable part, the second sleeve pipe rotates with first sleeve pipe to be connected, second sleeve pipe and movable part outer wall threaded connection, first sleeve pipe and movable part swing joint, the movable part has a plurality of second connecting rods along its upper portion round hinge, and the second connecting rod other end all articulates there is first connecting rod, the first connecting rod other end articulates in first sleeve pipe upper end respectively.
Further, a plurality of gaps are formed in the outer wall of the mounting sleeve in a circle, a plurality of clamping blocks are respectively connected in the gaps in a rotating mode, springs are fixed on the inner walls of the gaps, and the other ends of the springs are connected to the clamping blocks.
Furthermore, a plurality of clamping nails are fixed at one end of the clamping block.
Further, the two sides of the main hydraulic support rod are respectively provided with a thread groove, and the two measuring columns are respectively connected with the two sides of the main hydraulic support rod in a threaded mode.
The invention has the beneficial effects that:
according to the invention, through the measuring columns fixed at the two ends of the main hydraulic support rod, the two mounting blocks and the telescopic rods are matched, during mounting, the upper ends of the telescopic rods are inserted and fixed in the preset holes, the two measuring columns are respectively movably inserted into the round grooves at one ends of the two mounting blocks, the two measuring columns are symmetrically arranged, when the top plate is transversely offset, the offset can be observed through observing scale marks on the measuring columns, when the offset exceeds a safety distance, one end of the measuring column contacts a tact switch, an alarm lamp is triggered to give an alarm, an operator is reminded to process the offset, when the top plate is offset in the vertical direction, the top plate is indicated to be sunken in a rock, the top plate is moved downwards to squeeze the telescopic ends of the main hydraulic support rod and the auxiliary hydraulic support rod, at the moment, the movable part and the mounting sleeve are moved downwards synchronously, at the moment, the winding disc is relatively wound under the action of the coil spring, so that the winding rope is rotated, the marking rods are driven to deflect (the initial state of the marking rods is in the vertical state, the initial position of the marking rods can be controlled by inserting the movable part and the mounting sleeve into the distance of the preset holes), when the marking rods are in the vertical state, whether the offset angle of the marking rods exceeds the safety distance, the top plate can be directly observed, the sinking angle of the marking rods can be obtained, a plurality of the top plates can be visually observed, a plurality of safety accidents can be observed, and the safety accidents can be avoided, and the user can be visually observed, and the device can be observed conveniently, and has no need to observe the top plate.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic plan view of a rear surface of a roadway for supporting the roadway according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a measuring mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic perspective cross-sectional view of a mounting block according to an embodiment of the present invention;
FIG. 5 is a perspective view of a mounting sleeve according to an embodiment of the present invention;
fig. 6 is a schematic plan view of a fixed disk according to an embodiment of the present invention.
Marked in the figure as:
1. a top plate; 2. roadway; 3. a main hydraulic support bar; 4. an auxiliary hydraulic support rod; 5. a mounting block; 6. a telescopic rod; 61. a fixing part; 62. a movable part; 7. a mounting sleeve; 8. a marking rod; 11. a first sleeve; 12. a second sleeve; 13. a first link; 14. an end plate; 15. an alarm lamp; 16. a measuring column; 17. a reel; 18. a cavity; 19. a rope; 20. a drive gear; 21. a driven gear; 22. a circular groove; 23. touching the switch; 24. a fixed plate; 25. a coil spring; 26. a pin shaft; 27. a spring; 28. a notch; 29. a clamping block; 30. a staple; 31. a second link; 32. the hole is preset.
Detailed Description
The present invention will be further described in detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent.
It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Referring to fig. 1-6, a measuring device for monitoring the deviation of a coal mine tunnel roof comprises a roof 1 and a tunnel 2, wherein the roof 1 is supported on the top wall of the tunnel 2, auxiliary hydraulic support rods 4 are arranged on two sides of the roof 1, main hydraulic support rods 3 are arranged at the middle position of the bottom of the roof 1, measuring columns 16 are connected to two sides of the main hydraulic support rods 3, thread grooves are formed in two sides of the main hydraulic support rods 3, the two measuring columns 16 are respectively connected to two sides of the main hydraulic support rods 3 in a threaded mode, scale marks are arranged on the outer walls of the measuring columns 16, mounting blocks 5 are sleeved at one ends of the measuring columns 16, cavities 18 are formed in one end of each mounting block 5 far away from the measuring column 16, a winding disc 17 is arranged in each cavity 18 in a rotating mode, ropes 19 are wound on the winding disc 17, round holes are formed in the mounting blocks 5, one end of each ropes 19 penetrates through the round holes and are fixed with mounting sleeves 7, telescopic rods 6 are arranged on one side of each mounting block 5, the telescopic rods 8 are hollow inside the two ends of each telescopic rods 6, the telescopic rods 8 are movably inserted into the upper ends of the telescopic rods 6, one end plate 5 is fixed with an end plate 14, one end plate 14 is rotatably arranged on one side of each end plate 14, a marking rod 8 is rotatably arranged on one side, a plurality of the winding disc 17 is connected with one end plate 8, and one end plate is provided with one end plate 32 is rotatably, and one end plate 32 is convenient to use is provided with one end plate 32, and one end plate is conveniently is provided with one end hole 32, and is rotatably and has one end hole is arranged.
The roof 1 is divided into arc portion, horizontal portion, arc portion both ends and horizontal portion both ends welding, and the welding has a plurality of strengthening ribs between arc portion, the horizontal portion, and open in horizontal portion intermediate position department has the through-hole, and main hydraulic support pole 3 runs through the through-hole, and auxiliary hydraulic support pole 4 upper end supports in the horizontal portion, and main hydraulic support pole 3 upper end supports in the arc portion.
The circular groove 22 has all been opened to installation piece 5 one end, and two measurement post 16 one end slides respectively and locates in two circular grooves 22, and the tact switch 23 is all installed to circular groove 22 one end inner wall, and alarm lamp 15 is all installed to installation piece 5 one side outer wall, and two tact switches 23 control two alarm lamps 15 respectively and open and close, and when roof 1 lateral offset exceeded safe distance, measurement post 16 one end contact tact switch 23 triggered alarm lamp 15 and reported to the police, reminds operating personnel to handle.
One side of the rolling disc 17 is connected with a driving gear 20, one side in the cavity 18 is rotationally provided with a driven gear 21, the driving gear 20 is meshed with the driven gear 21, the driven gear 21 is connected with the marking rod 8 through a connecting shaft, the diameter of the driving gear 20 is larger than that of the driven gear 21, a speed change effect is achieved, the deflection angle of the marking rod 8 is amplified when the top plate 1 moves downwards slightly, and observation is facilitated.
A fixed disc 24 is fixed on the inner wall of one side of the cavity 18, a coil spring 25 is arranged in the fixed disc 24, a pin shaft 26 is coaxially fixed on one side of the winding disc 17, the other end of the pin shaft 26 is rotatably arranged in the fixed disc 24, and two ends of the coil spring 25 are respectively fixed on the fixed disc 24 and the pin shaft 26.
The telescopic link 6 divide into fixed part 61, movable part 62, and fixed part 61 is fixed in on the installation piece 5, and movable part 62 slip cap locates fixed part 61 upper end, and installation cover 7 inserts and locates movable part 62 upper end for in can bringing installation cover 7 together into predetermineeing hole 32 when we inject movable part 62, the setting of telescopic link 6 avoids two installation pieces 5 to rely on rope 19 taut horizontal rocking alone, and does not influence the distance between installation piece 5 and the tunnel 2 roof to change.
The locking mechanism comprises a plurality of clamping blocks 29, a plurality of clamping nails 30 are fixed at one end of each clamping block 29, a plurality of notches 28 are formed in one circle of the outer wall of the installation sleeve 7, the clamping blocks 29 are respectively connected in the notches 28 in a rotating mode, springs 27 are respectively fixed on the inner walls of the notches 28, the other ends of the springs 27 are respectively connected with the clamping blocks 29, the clamping blocks 29 extruded by the springs 27 are clamped in the preset holes 32 in a matching mode when the installation sleeve 7 is inserted into the preset holes 32, a first sleeve 11 and a second sleeve 12 are sleeved on the movable portion 62, the second sleeve 12 is connected with the first sleeve 11 in a rotating mode, the second sleeve 12 is connected with the outer wall of the movable portion 62 in a threaded mode, the first sleeve 11 is movably connected with the movable portion 62 in a hinged mode, a plurality of second connecting rods 31 are hinged to the movable portion 62 in a circle of the upper portion of the movable portion, the other ends of the second connecting rods 31 are hinged to the first connecting rods 13, the other ends of the first connecting rods 13 are respectively hinged to the upper ends of the first sleeve 11, the second sleeve 12 are rotated, and the second sleeve 12 is enabled to move upwards due to the fact that the second sleeve 12 is in threaded connection with the movable portion 62, and the first sleeve 11 is driven to move upwards, and the plurality of first connecting rods 11 are enabled to move upwards, and the first connecting rods 13 are tightly arranged in the preset positions against the preset holes 32.
Working principle: during installation, the top plate 1 is supported on the top wall of the roadway 2, the main hydraulic support rod 3 and the auxiliary hydraulic support rod 4 are supported on the top plate 1, the two measuring columns 16 are fixed on two sides of the main hydraulic support rod 3, the installation block 5 is sleeved at one end of the measuring column 16 through the circular groove 22, the two measuring columns 16 are symmetrically arranged, the movable part 62 at the upper end of the telescopic rod 6 is inserted into the preset hole 32, the installation sleeve 7 is inserted into the preset hole 32 together with the movable part 62 at the moment, the rope 19 is pulled to move when the installation sleeve 7 is inserted, the winding disc 17 is unwound, the winding disc 17 rotates to drive the marking rod 8 to rotate through the driving gear 20 and the driven gear 21, the initial position of the marking rod 8 is controlled by controlling the distance of the installation sleeve 7 inserted into the preset hole 32, the initial position is kept vertical, the clamping block 29 extruded by the spring 27 is clamped in the preset hole 32 in a clamping way, further, the second sleeve 12 is rotated, because the second sleeve 12 is in threaded connection with the movable part 62, the second sleeve 12 moves upwards to drive the first sleeve 11 to move upwards, a plurality of first connecting rods 13 and second connecting rods 31 are unfolded to be tightly abutted against the inner wall of the preset hole 32 to be positioned, when the top plate 1 is laterally offset, the offset can be observed through the scale marks on the observation measuring column 16, when the offset exceeds the safe distance, one end of the measuring column 16 contacts the tact switch 23 to trigger the alarm lamp 15 to alarm, remind an operator to process, when the top plate 1 is offset in the vertical direction, the rock of the top of a roadway is indicated to sink, the movable part 62 and the installation sleeve 7 positioned in the preset hole 32 move downwards along with the sinking of the rock synchronously, the winding rope 19 is correspondingly wound under the action of the coil spring 25, the rolling disc 17 rotates to drive the marking rods 8 to deflect, so that the deviation angle of the marking rods 8 relative to the vertical state can be directly observed to obtain whether the pressing distance of the top plate 1 is in a safe range, and when a plurality of top plates 1 in the roadway 2 are observed, the sinking amount of the plurality of top plates 1 can be observed through the plurality of marking rods 8.
The present invention is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a measuring device for monitoring colliery tunnel roof skew, includes roof (1), tunnel (2), its characterized in that, roof (1) supports in tunnel (2) roof, roof (1) both sides all are equipped with auxiliary hydraulic support pole (4), roof (1) bottom intermediate position department is equipped with main hydraulic support pole (3), and main hydraulic support pole (3) both sides all are connected with measuring column (16), measuring column (16) outer wall is equipped with the scale mark, measuring column (16) one end all overlaps and is equipped with installation piece (5), and cavity (18) all are opened to measuring column (16) one end is kept away from in installation piece (5), and cavity (18) internal rotation is equipped with reel (17), and reel (19) are gone up around reel back rope (19), and open round hole on installation piece (5), and rope (19) one end is passed the round hole and is fixed with installation cover (7), telescopic link (6) are both ends opening inside hollow, and rope (19) run through telescopic link (6) and installation cover (7) are inserted in movable plug-in (6) one side and are equipped with end plate (14) all, end plate (14) all are equipped with end plate (14), the winding disc (17) is connected with the marking rod (8), the winding disc (17) drives the marking rod (8) to rotate when being wound and unwound, a plurality of preset holes (32) are formed in the top wall of the roadway (2), the upper end of the telescopic rod (6) and the mounting sleeve (7) are inserted into the preset holes (32), and a locking mechanism is arranged between the upper end of the telescopic rod (6) and the mounting sleeve (7) and the preset holes (32).
2. The measuring device for monitoring the deviation of the roof of the coal mine roadway according to claim 1, wherein the roof (1) is divided into an arc-shaped part and a horizontal part, two ends of the arc-shaped part are welded with two ends of the horizontal part, a plurality of reinforcing ribs are welded between the arc-shaped part and the horizontal part, a through hole is formed in the middle position of the horizontal part, the main hydraulic support rod (3) penetrates through the through hole, the upper end of the auxiliary hydraulic support rod (4) is supported on the horizontal part, and the upper end of the main hydraulic support rod (3) is supported on the arc-shaped part.
3. The measuring device for monitoring the deviation of the roof of the coal mine roadway according to claim 1, wherein one end of the mounting block (5) is provided with a circular groove (22), one ends of the two measuring columns (16) are respectively arranged in the two circular grooves (22) in a sliding mode, the inner wall of one end of each circular groove (22) is provided with a tact switch (23), the outer wall of one side of the mounting block (5) is provided with an alarm lamp (15), and the two tact switches (23) respectively control the two alarm lamps (15) to be opened and closed.
4. The measuring device for monitoring the deviation of the roof of the coal mine tunnel according to claim 1, wherein one side of the winding disc (17) is connected with a driving gear (20), one side in the cavity (18) is rotatably provided with a driven gear (21), the driving gear (20) is meshed with the driven gear (21), and the driven gear (21) is connected with the marking rod (8) through a connecting shaft.
5. The measuring device for monitoring the deviation of the roof of the coal mine tunnel according to claim 1, wherein a fixed disc (24) is fixed on the inner wall of one side of the cavity (18), a coil spring (25) is installed in the fixed disc (24), a pin roll (26) is coaxially fixed on one side of the winding disc (17), the other end of the pin roll (26) is rotatably arranged in the fixed disc (24), and two ends of the coil spring (25) are respectively fixed on the fixed disc (24) and the pin roll (26).
6. The measuring device for monitoring the deviation of the roof of the coal mine tunnel according to claim 1, wherein the telescopic rod (6) is divided into a fixed part (61) and a movable part (62), the fixed part (61) is fixed on the installation block (5), the movable part (62) is slidably sleeved at the upper end of the fixed part (61), and the installation sleeve (7) is inserted at the upper end of the movable part (62).
7. The measuring device for monitoring the deviation of the roof of the coal mine tunnel according to claim 6, wherein the locking mechanism comprises a plurality of clamping blocks (29), the clamping blocks (29) are all rotationally arranged on the outer wall of the circle of the installation sleeve (7), a first sleeve (11) and a second sleeve (12) are sleeved on the movable portion (62), the second sleeve (12) is rotationally connected with the first sleeve (11), the second sleeve (12) is in threaded connection with the outer wall of the movable portion (62), the first sleeve (11) is movably connected with the movable portion (62), a plurality of second connecting rods (31) are hinged to the movable portion (62) along the upper portion of the movable portion, a first connecting rod (13) is hinged to the other ends of the second connecting rods (31), and the other ends of the first connecting rods (13) are respectively hinged to the upper ends of the first sleeve (11).
8. The measuring device for monitoring the deviation of the roof of the coal mine tunnel according to claim 7, wherein a plurality of notches (28) are formed in the outer wall of the mounting sleeve (7) in a circle, a plurality of clamping blocks (29) are respectively connected in the notches (28) in a rotating mode, springs (27) are fixed on the inner walls of the notches (28), and the other ends of the springs (27) are connected to the clamping blocks (29).
9. The measuring device for monitoring the deviation of the roof of the coal mine tunnel according to claim 8, wherein a plurality of clamping nails (30) are fixed at one ends of the clamping blocks (29).
10. A measuring device for monitoring the deviation of a roof of a coal mine tunnel according to any one of claims 1-9, characterized in that the two sides of the main hydraulic support bar (3) are provided with screw grooves, and two measuring columns (16) are respectively screwed on the two sides of the main hydraulic support bar (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310451815.0A CN116182668A (en) | 2023-04-25 | 2023-04-25 | Measuring device for monitoring coal mine tunnel roof deflection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310451815.0A CN116182668A (en) | 2023-04-25 | 2023-04-25 | Measuring device for monitoring coal mine tunnel roof deflection |
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| CN116182668A true CN116182668A (en) | 2023-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310451815.0A Withdrawn CN116182668A (en) | 2023-04-25 | 2023-04-25 | Measuring device for monitoring coal mine tunnel roof deflection |
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| CN (1) | CN116182668A (en) |
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| CN110672018A (en) * | 2019-11-18 | 2020-01-10 | 车志敏 | Underground works is with exploitation tunnel rock stratum displacement monitoring devices |
| CN110671989A (en) * | 2019-05-31 | 2020-01-10 | 南京奥达升智能科技有限公司 | Control system based on bridge jacking intelligence double displacement sensor |
| CN112361923A (en) * | 2020-11-04 | 2021-02-12 | 华北科技学院 | Measuring device for monitoring coal mine tunnel roof deviation |
| CN217110740U (en) * | 2022-04-12 | 2022-08-02 | 山东科大中天安控科技有限公司 | Multipoint mode roof displacement monitor |
-
2023
- 2023-04-25 CN CN202310451815.0A patent/CN116182668A/en not_active Withdrawn
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|---|---|---|---|---|
| JPH04286910A (en) * | 1991-03-15 | 1992-10-12 | Toda Constr Co Ltd | Method and apparatus for automatically measuring in-cavity displacement of tunnel |
| CN2709927Y (en) * | 2004-07-27 | 2005-07-13 | 西安科技大学 | Multi-point displacement measuring indicating instrument for rock separation layer |
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| CN102980476A (en) * | 2012-07-17 | 2013-03-20 | 安徽理工大学 | Separation layer displacement meter |
| ES2424396A1 (en) * | 2013-05-16 | 2013-10-01 | Universidad De Oviedo | Device for continuous measurement of convergence in tunnels (Machine-translation by Google Translate, not legally binding) |
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Application publication date: 20230530 |