CN217716288U - Coal mine tunnel looseness range measuring device - Google Patents
Coal mine tunnel looseness range measuring device Download PDFInfo
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- CN217716288U CN217716288U CN202221754081.0U CN202221754081U CN217716288U CN 217716288 U CN217716288 U CN 217716288U CN 202221754081 U CN202221754081 U CN 202221754081U CN 217716288 U CN217716288 U CN 217716288U
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Abstract
The utility model discloses a colliery tunnel looseness circle range measuring device, the wire is established ties power, switch, slide rheostat, forms the trunk circuit of circuit, the wire will establish ties ampere meter A, ampere meter B, ampere meter C, ampere meter D respectively, and the access circuit forms the circuit branch road, and in each branch road one end access circuit's trunk circuit, the other end is respectively with survey box A, survey box B, survey box C, survey box D's wire switch-on. The device mainly comprises a power supply, a switch, a slide rheostat, a lead, an ammeter, a drill hole, a measuring box and the like. The main principle is that when a drill hole is contracted, a spring in the measuring box can be contracted to generate elastic force, the resistance value of the piezoresistor is changed by the elastic force generated by the contraction of the spring, so that the ammeter indicating number of a branch in a circuit is changed, and the range of the roadway side part loosening ring can be measured through the change condition of the ammeter indicating number.
Description
Technical Field
The utility model belongs to the technical field of the monitoring is pressed in the ore deposit, concretely relates to coal mine tunnel looseness circle range measuring device.
Background
The tunnel excavation causes the surrounding rock stress to redistribute, the rock strength and the rock mass internal stress change, and an annular fracture area is formed around the excavation space, which is called a tunnel surrounding rock loosening zone, and is called a loosening zone for short. In the process of coal mine underground working face extraction, the loosening zone range of a working face roadway often needs to be measured, so that the supporting mode of the roadway is determined, and the current methods for measuring the loosening zone of the roadway mainly comprise the following two methods:
the method comprises the following steps: measuring method of ultrasonic wave surrounding rock crack detector: the principle is that ultrasonic waves are transmitted to the roadway wall by an ultrasonic surrounding rock crack detector, and the loosening range of the roadway is judged according to the condition of receiving the reflected ultrasonic waves. The method has the main disadvantages that the equipment cost is high, and the ultrasonic surrounding rock crack detector needs to be cooperatively matched by a plurality of people and is not suitable for large-scale use.
The second method comprises the following steps: drilling and peeping method: drilling holes in the roadway side part, enabling a camera probe of the drilling peeping instrument to extend into the drilling holes, enabling the camera probe to peep the crack development condition in the drilling holes, and judging the range of the roadway loosening area of the working face according to the crack development condition. The method has the main defects that the camera probe of the drilling peeping instrument is easily blocked by a collapsed drill hole, so that the probe of the drilling peeping instrument is scrapped to cause loss, the loosening ring range needs to be artificially judged according to cracks in the drill hole, and judgment errors exist
Therefore, the coal mine roadway looseness circle range measuring device is provided to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcomings of the prior art and providing the coal mine tunnel looseness circle range measuring device.
In order to solve the technical problem, the utility model provides a following technical scheme: a coal mine roadway loosening zone measuring device comprises a power supply, a switch, a sliding rheostat, a wire, an ammeter A, an ammeter B, an ammeter C, an ammeter D, a drill hole, an upper cover, a fixing plate A, a fixing plate B, a fixing plate C, a fixing plate D, a lower cover, a spring, a weight block, a hydraulic rod, a hydraulic cylinder and a piezoresistor, wherein the power supply, the switch and the sliding rheostat are connected in series through the wire to form a main circuit of a circuit, the ammeter A, the ammeter B, the ammeter C and the ammeter D are connected in series through the wire to form a circuit branch, one end of each branch is connected into the main circuit of the circuit, the other end of each branch is connected with the wires of a measuring box A, a measuring box B, a measuring box C and a measuring box D, the measuring box A, the measuring box B, the measuring box C and the measuring box D are respectively located at a measuring point A, a measuring point B, a measuring point C and a measuring point D in a roadway side drill hole, and the measuring box A, the measuring box B, the measuring box C and the measuring box D are internally connected in a mode that: the upper cover is connected with the upper end of the fixing plate A, the lower end of the fixing plate A is connected with the upper surface of the fixing plate B, the left end and the right end of the lower surface of the fixing plate B are respectively connected with a hydraulic rod, the lower end of the hydraulic rod is a hydraulic cylinder, the hydraulic rod can be retracted into the hydraulic cylinder, the fixing plate C is fixed at the lower end of the hydraulic cylinder, the spring is connected to the middle of the lower surface of the fixing plate B, the weight block is fixed at the lower end of the spring, the piezoresistor is arranged below the weight block, the fixing plate C is arranged below the piezoresistor, the fixing plate D is connected with the lower end of the fixing plate C, and the lower cover is fixed at the lower end of the fixing plate D.
As an optimized technical solution of the present invention, the varistor is characterized in that the resistance value changes with the change of the pressure.
As a preferred technical scheme of the utility model, both ends are connected with the wire about the piezo-resistor, the wire at both ends inserts in each branch road about the piezo-resistor.
Compared with the prior art, the utility model discloses the beneficial effect that can reach is:
1. this practicality is through inserting devices such as ammeter and survey box in the parallel circuit, through digging a hole at tunnel group portion, and then will survey the box and place at downthehole fixed measurement station position, when drilling because the working face is adopted to influence and take place the shrinkage cavity, leads to surveying the resistance value of box inner piezo-resistor and change, and then leads to the ampere number in the circuit to change, comes indirect shrinkage cavity condition of reflecting drilling through the change situation of ampere number in the circuit, the slack circle scope condition promptly. Compared with the original measuring method, the device has the advantages of simple structure, low manufacturing cost, simple and convenient operation, portability and accurate result, and can effectively monitor the range of the coal mine roadway loosening ring.
Drawings
Fig. 1 is a schematic plan layout view of a coal mine tunnel loosening zone range measuring device of the present invention;
fig. 2 is a schematic plan view of the coal mine tunnel loosening range measuring device of the present invention;
fig. 3 is one of the three-dimensional schematic views of the measuring box structure of the coal mine tunnel loosening zone range measuring device of the present invention;
fig. 4 is the utility model discloses a coal mine tunnel looseness range measuring device's survey box structure drawing two in a perspective.
Wherein: 1. a power source; 2. a switch; 3. a slide rheostat; 4. a wire; 5. an ammeter A; 6. an ammeter B; 7. an ammeter C; 8. an ammeter D; 9. drilling; 10. an upper cover; 11. fixing a plate A; 12. a fixing plate B; 13. a fixing plate C; 14. a fixing plate D; 15. a lower cover; 16. a spring; 17. a weight block; 18. a hydraulic lever; 19. a hydraulic cylinder; 20. a voltage dependent resistor.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the invention easy to understand, the invention is further explained below with reference to the specific embodiments, but the following embodiments are only the preferred embodiments of the invention, not all. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental procedures in the following examples were carried out in a conventional manner unless otherwise specified, and materials, reagents and the like used in the following examples were commercially available unless otherwise specified.
The embodiment is as follows:
as shown in figures 1-4, a coal mine roadway loosening zone range measuring device comprises a power supply 1, a switch 2, a slide rheostat 3, a lead 4, an ammeter A5, an ammeter B6, an ammeter C7, an ammeter D8, a drill hole 9, an upper cover 10, a fixed plate A11, a fixed plate B12, a fixed plate C13, a fixed plate D14, a lower cover 15, a spring 16, a weight 17, a hydraulic rod 18, a hydraulic cylinder 19 and a piezoresistor 20, wherein the power supply 1, the switch 2 and the slide rheostat 3 are connected in series through the lead 4 to form a main circuit of a circuit, an ammeter A5, an ammeter B6, an ammeter C7 and an ammeter D8 are respectively connected in series by a lead 4 and are connected into a circuit to form circuit branches, one end of each branch is connected into a trunk circuit of the circuit, the other end of each branch is respectively connected with a lead 4 of a measuring box A, a measuring box B, a measuring box C and a measuring box D, the measuring box A, the measuring box B, the measuring box C and the measuring box D are respectively positioned at a measuring point A, a measuring point B, a measuring point C and a measuring point D in a roadway wall drilling hole 9, and the measuring box A, the measuring box B, the measuring box C and the measuring box D are internally connected in the following mode: upper cover 10 is connected with fixed plate A11 upper end, fixed plate A11 lower extreme is connected with fixed plate B12 upper surface, both ends are connected with hydraulic stem 18 respectively about fixed plate B12 lower surface, the lower extreme of hydraulic stem 18 is pneumatic cylinder 19, and hydraulic stem 18 is collapsible to in the pneumatic cylinder 19, fixed plate C13 is being fixed to the lower extreme of pneumatic cylinder 19, spring 16 is being connected at fixed plate B12 lower surface middle part, pouring weight 17 is being fixed to spring 16's lower extreme, pouring weight 17's below is piezo-resistor 20, piezo-resistor 20 below is fixed plate C13, the lower extreme of fixed plate C13 is connected with fixed plate D14, the lower extreme of fixed plate D14 is fixed with lower cover 15.
In other embodiments, the piezo-resistor 20 may be characterized by a resistance that changes with a change in the applied pressure.
In other embodiments, the left and right ends of the varistor 20 are connected with the conducting wires 4, and the conducting wires 4 at the left and right ends of the varistor 20 are connected into the branches.
The specific using method comprises the following steps: drilling a hole 9 in the roadway wall, and respectively arranging a measuring box A, a measuring box B, a measuring box C and a measuring box D at a measuring point A, a measuring point B, a measuring point C and a measuring point D in the drilled hole 9 of the roadway wall, wherein the arrangement positions of the measuring point A, the measuring point B, the measuring point C and the measuring point D can be adjusted. When the roadway is affected by mining on a working face to form a loose circle, the drill hole 9 at the roadway wall part can be contracted, and the like, when the drill hole 9 is contracted, the upper covers 10 of the measuring box A, the measuring box B, the measuring box C and the measuring box D which are positioned in the drill hole 9 can move downwards due to the contraction of the drill hole 9, when the upper cover 10 moves downwards, the fixing plate A11 can be pushed to move downwards, the fixing plate B12 can be pushed to move downwards, the hydraulic rod 18 can be pushed to contract towards the inside of the hydraulic cylinder 19 by the downward movement of the fixing plate B12, meanwhile, the spring 16 can be caused to contract downwards by the downward movement of the fixing plate B12, the elastic force generated by the contraction of the spring 16 can be increased along with the force acted on the piezoresistor 20 by the weight 17, and the resistance value of the piezoresistor 20 is changed at the moment, at the moment, the current in the branch is changed, each branch can check the change condition of the current in the branch through an ammeter A5, an ammeter B6, an ammeter C7 and an ammeter D8 respectively, the shrinkage condition of the drill holes 9 at the measuring points A, B, C and D can be indirectly reflected through the change condition of the indication numbers of the ammeter A5, the ammeter B6, the ammeter C7 and the ammeter D8 in each branch, the loose circle range of the roadway side part can be measured through the shrinkage condition of the drill holes 9 at the measuring points A, B, C and D, and the indication numbers of the ammeter A5, the ammeter B6, the ammeter C7 and the ammeter D8 in the branch can be changed when the measuring points A, B, C and D are in the loose circle range; when the measuring point A, the measuring point B, the measuring point C and the measuring point D are outside the loosening range, the indication numbers of the ammeter A5, the ammeter B6, the ammeter C7 and the ammeter D8 in the branch can not be changed, and the loosening range of the roadway side can be obtained through the change condition of the indication numbers of the ammeter A5, the ammeter B6, the ammeter C7 and the ammeter D8 in the branch.
The device is simple and exquisite in structure, the more the measuring points are, the accurate measuring result is obtained, the number of the measuring points can be adjusted artificially, and the purpose of effectively monitoring the loosening circle range of the coal mine tunnel can be achieved.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a coal mine tunnel looseness circle range measuring device which characterized in that: the device comprises a power supply (1), a switch (2), a sliding rheostat (3), a wire (4), an ammeter A (5), an ammeter B (6), an ammeter C (7), an ammeter D (8), a drill hole (9), an upper cover (10), a fixing plate A (11), a fixing plate B (12), a fixing plate C (13), a fixing plate D (14), a lower cover (15), a spring (16), a weight block (17), a hydraulic rod (18), a hydraulic cylinder (19) and a piezoresistor (20), wherein the power supply (1), the switch (2) and the sliding rheostat (3) are connected in series by the wire (4) to form a main circuit of the circuit, the wire (4) is respectively connected in series with the ammeter A (5), the ammeter B (6), the ammeter C (7) and the ammeter D (8) to form a circuit branch, one end of each branch is connected in the main circuit, the other end of each branch is respectively connected with the wire (4) of the test box A, the test box B, the test box C and the test box D, the other end of each branch is respectively connected with the test box A, the test box B, the test box C and the test point B, the tunnel, the test box C and the test point B are respectively located in the inner part of the test box A, the test box, the test point A, the test point B, the test point B, and the test point connecting mode: the upper cover (10) is connected with fixed plate A (11) upper end, fixed plate A (11) lower extreme is connected with fixed plate B (12) upper surface, both ends are connected with hydraulic stem (18) respectively about fixed plate B (12) lower surface, the lower extreme of hydraulic stem (18) is pneumatic cylinder (19), just hydraulic stem (18) collapsible extremely in pneumatic cylinder (19), fixed plate C (13) are being fixed to the lower extreme of pneumatic cylinder (19), spring (16) are being connected to fixed plate B (12) lower surface middle part, pouring weight (17) are being fixed to the lower extreme of spring (16), the below of pouring weight (17) is piezo-resistor (20), piezo-resistor (20) below is fixed plate C (13), the lower extreme of fixed plate C (13) is connected with fixed plate D (14), the lower extreme of fixed plate D (14) is fixed with lower cover (15).
2. A coal mine roadway slack range measurement device as claimed in claim 1, wherein said piezoresistor (20) is characterized by a resistance that changes with changes in the pressure to which it is subjected.
3. The coal mine roadway looseness range measuring device according to claim 1, wherein conducting wires (4) are connected to the left end and the right end of the piezoresistor (20), and the conducting wires (4) at the left end and the right end of the piezoresistor (20) are connected into the branches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221754081.0U CN217716288U (en) | 2022-07-07 | 2022-07-07 | Coal mine tunnel looseness range measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221754081.0U CN217716288U (en) | 2022-07-07 | 2022-07-07 | Coal mine tunnel looseness range measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN217716288U true CN217716288U (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221754081.0U Active CN217716288U (en) | 2022-07-07 | 2022-07-07 | Coal mine tunnel looseness range measuring device |
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| CN (1) | CN217716288U (en) |
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2022
- 2022-07-07 CN CN202221754081.0U patent/CN217716288U/en active Active
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