Device for measuring whole-course gradient of upward-inclined drilling hole in high-position rock stratum blasting

Abstract

The utility model relates to the field of coal mine underground roof high-level drilling measurement, in particular to a high-level rock layer blasting upward-inclined drilling whole-course gradient measuring device, which is characterized in that guide rails are arranged on the inner wall of a guide rail sleeve, extend from the outer end of the sleeve to the inner end of the sleeve, are positioned at two ends of the same diameter of the guide rail sleeve and are parallel; the outer diameter of the guide rail sleeve is matched with the aperture of a high-position rock stratum blasting upper inclined drill hole; an inclination measuring sensor and a connecting shaft are arranged in a metal shell of the power self-climbing probe, the two ends, penetrating out of the metal shell, of the rear connecting shaft are each connected with a driving motor, and the other connecting shaft penetrates through the metal shell to be connected with two driven wheels. The driving motor is connected with the driving wheel and drives the driving wheel to rotate at a given speed, and the driving wheel drives the power self-climbing probe to move on the guide rail. According to the utility model, the guide rail sleeve, the annular limiting device and the power self-climbing probe are ingeniously utilized to efficiently and accurately measure the whole-course inclination of the upward-inclined drilling hole, so that the drilling hole-forming quality is ensured, and the operation effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of measurement of high-level boreholes in the roof of coal mines, and particularly relates to a device for measuring the whole-course inclination of upwardly inclined boreholes in high-level rock strata blasting, which is applicable to the accurate and efficient measurement of the whole-course inclination of upwardly inclined boreholes in coal mines. Background Technique

[0002] With the continuous increase of the underground mining depth of mineral resources, the manifestation of mine pressure is becoming increasingly severe, which has a huge impact on the life safety of workers, the production safety of mines and the benefits of mines. Therefore, it is of top priority to control rock bursts from the source. Previously, the main measures for preventing and controlling rock bursts included water injection softening, slotting pressure relief, local blasting pressure relief, etc. However, the pressure relief areas of these measures are small, and the prevention and control effects on rock bursts are not ideal enough. The proposal of the method of forming an "artificial pre-cracked layer" by high-level rock strata blasting provides a new direction for the prevention and control of rock bursts. The high-level rock strata blasting technology can control rock bursts from the source, alleviate the contradiction between mining and mine pressure, and is not affected by the spatial position of the roadway, with obvious pressure relief effect.

[0003] In the high-level rock strata blasting technology, the hole-forming quality of the blasting boreholes is of top priority, which has a crucial impact on the subsequent charging efficiency, blasting and pressure relief effects. Therefore, measuring and ensuring the borehole quality of the blasting boreholes is an indispensable part of the high-level rock strata blasting technology. Since the blasting boreholes in the high-level rock strata blasting technology are upwardly inclined boreholes, and the existing borehole inclination measurement devices and methods are mostly for vertical boreholes or downwardly inclined boreholes, lacking devices and methods for measuring upwardly inclined boreholes; and most of them only measure the inclination of the borehole bottom, lacking the measurement of the inclination of the borehole mouth and the middle section. Therefore, how to accurately and efficiently measure the whole-course inclination of upwardly inclined boreholes has become an urgent problem to be solved in this field. Content of the Utility Model

[0004] Aiming at the problem of difficult measurement of the whole-course inclination of upwardly inclined boreholes, the utility model provides a device for measuring the whole-course inclination of upwardly inclined boreholes in high-level rock strata blasting, which includes a guide rail sleeve and a power self-climbing probe. The inner wall of the guide rail sleeve is provided with guide rails, and the guide rails extend from the outer end of the sleeve to the inner end of the sleeve. The guide rails are located at both ends of the same diameter of the guide rail sleeve and are parallel to each other; the outer diameter of the guide rail sleeve matches the aperture of the upwardly inclined borehole in high-level rock strata blasting; the power self-climbing probe includes a metal shell, and an inclinometer sensor and two connecting shafts are arranged in the metal shell. The two connecting shafts penetrate through the left and right ends of the metal shell, one in front and the other behind. Among them, both ends of the rear connecting shaft are respectively connected to a driving motor, and the output shaft of the driving motor is connected to a driving wheel; both ends of the front connecting shaft are respectively connected to a rotating shaft, and the rotating shaft is connected to a driven wheel; the driving wheel and the driven wheel are located in the same plane.

[0005] Preferably, the guide rails are two parallel strip-shaped racks, and the teeth of the strip-shaped racks are arranged oppositely.

[0006] Preferably, teeth are circumferentially provided on the driving wheel and the driven wheel, and the teeth on the circumferences of the driving wheel and the driven wheel mesh with the teeth of the strip rack.

[0007] Preferably, when the teeth on the circumferences of the driving wheel and the driven wheel mesh with the teeth of the strip rack, there is a certain gap to adapt to the slight change in the tooth pitch on the strip rack when the strip rack inclines due to the inclination change of the self-guiding sleeve.

[0008] Preferably, a telescopic spring is provided at a position where the connecting shaft is close to the metal housing.

[0009] Preferably, a rubber protective layer is provided on the outer surface of the top end of the metal housing.

[0010] Preferably, an annular limiting device is further included, and the annular limiting device can be in interference fit with the upper inclined drill hole to prevent the guide sleeve from sliding out of the upper inclined drill hole in the high-level rock formation blasting due to its own weight.

[0011] Preferably, the annular limiting device is selected as an annular rubber plug structure or an annular expansion spring.

[0012] Preferably, it is connected to the inclinometer sensor through the first cable for transmitting energy and data to the inclinometer sensor; it is connected to the driving motor through the second cable for transmitting kinetic energy to the driving wheel; the first cable and the second cable are combined into a composite cable outside the metal housing.

[0013] Preferably, the composite cable is connected to the host through a cable drum, and the cable drum is used for winding and unwinding the composite cable.

[0014] Preferably, the host includes a display screen, and the host is used for storing and displaying the measured inclination data of the upper inclined drill hole. The host controls the driving motor to rotate forward or backward to control the power self-climbing probe to move from the outer end to the inner end or from the inner end to the outer end of the guide sleeve.

[0015] Preferably, the host can also control the rotation speed of the driving motor.

[0016] Advantages of the utility model: The utility model ingeniously designs the guide sleeve, the annular limiting device and the power self-climbing probe. The guide sleeve closely fits the inner wall of the upper inclined drill hole and is fixed by the annular limiting device. The power self-climbing probe moves on the guide rail inside the guide sleeve, and the movement track is consistent with the inclination change of the upper inclined drill hole, so that the inclination of each point in the whole process of the upper inclined drill hole can be accurately measured, and then the hole-forming quality of the blasting drill hole can be obtained more accurately to ensure the charging, blasting and pressure relief effects; each component of the utility model is fully recycled, saving costs. Description of the Drawings

[0017] Figure 1 This is a schematic diagram of the overall structure of the device for measuring the full - length inclination of the upper - inclined borehole in high - position rock - layer blasting of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the guide - rail sleeve in the device for measuring the full - length inclination of the upper - inclined borehole of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the power - self - climbing probe in the device for measuring the full - length inclination of the upper - inclined borehole of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the annular expansion spring in the device for measuring the full - length inclination of the upper - inclined borehole of the utility model;

[0021] In the figure: 1 - guide - rail sleeve; 2 - power - self - climbing probe; 3 - composite cable; 4 - cable drum; 5 - main unit; 6 - upper - inclined borehole; 7 - high - position pre - blasting rock layer; 8 - roadway; 9 - annular limiting device (annular expansion spring); 10 - guide rail; 11 - rubber protective layer; 12 - inclinometer sensor; 13 - driven wheel; 14 - telescopic spring; 15 - driving wheel; 16 - driving motor; 17 - first cable; 18 - second cable; 19 - connecting shaft; 20 - metal shell; 21 - shell opening. Specific implementation manners

[0022] The device of the utility model will be further described in detail below in conjunction with the specific implementation manners with reference to the attached drawings.

[0023] As Figures 1 to 4 shown, a device for measuring the full - length inclination of the upper - inclined borehole in high - position rock - layer blasting provided by the utility model includes a guide - rail sleeve 1, a power - self - climbing probe 2, a composite cable 3, a cable drum 4, a main unit 5, and an annular limiting device 9; the guide - rail sleeve 1 is a sleeve with a certain deformation ability to adapt to the inclination change of the upper - inclined borehole 6 in high - position rock - layer blasting. For example, the guide - rail sleeve 1 can be a thin - wall metal sleeve or a plastic sleeve with a certain deformation ability; the inner wall of the guide - rail sleeve 1 is provided with a guide rail 10, the guide rail 10 extends from the outer end of the sleeve to the inner end of the sleeve, the guide rail 10 is two parallel bar - shaped racks and is located at both ends of the same diameter of the guide - rail sleeve 1, and the teeth of the bar - shaped racks are arranged oppositely; the outer diameter of the guide - rail sleeve 1 matches the diameter of the upper - inclined borehole 6 in high - position rock - layer blasting so that the outer wall of the guide - rail sleeve 1 can be closely attached to the upper - inclined borehole 6 in high - position rock - layer blasting; the annular limiting device 9 can be in interference fit with the upper - inclined borehole 6 in high - position rock - layer blasting to prevent the guide - rail sleeve 1 from sliding out of the upper - inclined borehole 6 in high - position rock - layer blasting under its own weight, and the sum of the lengths of the annular limiting device 9 and the guide - rail sleeve 1 is equal to the length of the upper - inclined borehole 6 in high - position rock - layer blasting. During operation, the annular limiting device 9 is on the outside and the guide - rail sleeve 1 is on the inside;

[0024] The main body of the power self-climbing probe 2 is a pointed cylindrical metal housing 20. Inside the metal housing 20, there are an inclinometer sensor 12 and two connecting shafts 19. The two connecting shafts 19 pass through the left and right ends of the metal housing 20, one in the front and the other in the back. Among them, both ends of the rear connecting shaft 19 are respectively connected to a driving motor 16. The output shaft of the driving motor 16 is connected to a driving wheel 15 to drive the driving wheel 15 to rotate at a given speed. Both ends of the front connecting shaft 19 are respectively connected to a rotating shaft, and the rotating shaft is connected to a driven wheel 13. The output shaft of the driving motor 16 and the rotating shaft are both perpendicular to the connecting shaft 19, so that the driving wheel 15 and the driven wheel 13 are located in the same plane. The connecting shaft 19 is fixedly connected to the metal housing 20, and there is a housing opening 21 at the place where it passes through the metal housing 20. The driving wheel 15 and the driven wheel 13 are provided with teeth circumferentially. The teeth on the circumferences of the driving wheel 15 and the driven wheel 13 are meshed with the teeth of the strip-shaped rack, so that the driving wheel 15 can drive the power self-climbing probe 2 to move in the direction of the length of the guide rail sleeve 1 (between the outer end and the inner end of the guide rail sleeve 1). When the teeth on the circumferences of the driving wheel 15 and the driven wheel 13 are meshed with the teeth of the strip-shaped rack, there is a certain gap to adapt to the slight change in the tooth pitch on the strip-shaped rack when the strip-shaped rack tilts due to the inclination change of the guide rail sleeve 1. A telescopic spring 14 is provided near the housing opening 21 of the connecting shaft 19 to adapt to the change in the inclination of the upper inclined borehole 6 in high-position rock blasting and provide buffering. A rubber protective layer 11 is provided on the outer surface of the pointed end of the metal housing to protect the power self-climbing probe 2.

[0025] The first cable 17 is connected to the inclinometer sensor 12 to transmit energy and data for the inclinometer sensor 12. The second cable 18 is connected to the driving motor 16 to transmit kinetic energy to the driving wheel 15. The first cable 17 and the second cable 18 are combined into a composite cable 3 outside the metal housing 20. The composite cable 3 is connected to the host 5 through a cable drum 4. The cable drum 4 is used to wind and unwind the composite cable 3. The host 5 includes a display screen. The host 5 is used to store and display the measured inclination data of the upper inclined borehole 6. The host 5 controls the power self-climbing probe 2 to move from the outer end of the guide rail sleeve 1 to the inner end or from the inner end of the guide rail sleeve 1 to the outer end by controlling the forward or reverse rotation of the driving motor 16. Preferably, the host 5 can also control the rotation speed of the driving motor 16 and thus control the movement speed of the power self-climbing probe 2 inside the guide rail sleeve 1, etc.

[0026] As Figure 4 shown, the annular limiting device 9 can be selected as an annular rubber plug structure or an annular expansion spring 9. The annular limiting device 9 is arranged at the outer end of the guide rail sleeve 1 during operation to fix the guide rail sleeve 1 in the upper inclined borehole 6. The annular limiting device 9 is in a tightened state under normal conditions. When working, the annular expansion spring 9 expands to fix the guide rail sleeve 1 in the upper inclined borehole 6.

[0027] The usage method of the present utility model is as follows: a. Construct an upwardly inclined borehole 6 from the roadway 8 into the high-level pre-blasted rock stratum 7;

[0028] b. Assemble the measuring device of the present utility model;

[0029] c. Insert the guide rail sleeve 1 into the upwardly inclined borehole 6. After complete insertion, install the annular limit device 9 to fix the guide rail sleeve 1 in the upwardly inclined borehole 6;

[0030] d. Install the power self-climbing probe 2 on the guide rail 10 of the guide rail sleeve 1. Turn on the main machine 5 to make the power self-climbing probe 2 move from the outer end to the inner end of the guide rail sleeve 1, and at the same time perform full-course inclination measurement; it can be measured once, or multiple measurements can be taken and averaged to make the measurement result more reliable;

[0031] e. The main machine 5 controls the driving motor 16 to reverse, so that the power self-climbing probe 2 moves from the inner end to the outer end of the guide rail sleeve 1, and at the same time rotates the cable drum 4 to retract the composite cable 3, recover the power self-climbing probe 2, recover the annular limit device 9, and recover the guide rail sleeve 1.

[0032] The above embodiments are only used to illustrate rather than limit the technical solutions of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, any person skilled in the art should understand that the present utility model can still be modified or equivalently replaced. Any modification or partial replacement without departing from the spirit and scope of the present utility model shall be covered by the scope of the claims of the present utility model and fall within the protection scope of the present utility model.

Claims

1. An inclination measurement device for the whole process of an upwardly inclined borehole in high-level rock stratum blasting, comprising a guide rail sleeve and a power self-climbing probe, characterized in that, A guide rail is provided on the inner wall of the guide rail sleeve. The guide rail extends from the outer end of the sleeve to the inner end of the sleeve. The guide rails are located at both ends of the same diameter of the guide rail sleeve and are parallel to each other. The outer diameter of the guide rail sleeve matches the aperture of the upper inclined borehole for high-level rock stratum blasting. The power self-climbing probe includes a metal housing. A clinometer sensor and two connecting shafts are arranged in the metal housing. The two connecting shafts penetrate through the left and right ends of the metal housing, one in front of the other. Wherein, both ends of the rear connecting shaft are respectively connected to a driving motor, and the output shaft of the driving motor is connected to a driving wheel. Both ends of the front connecting shaft are respectively connected to a rotating shaft, and the rotating shaft is connected to a driven wheel. The driving wheel and the driven wheel are located in the same plane.

2. The measuring device according to claim 1, characterized in that, The guide rails are two parallel bar-shaped racks, and the teeth of the bar-shaped racks are arranged oppositely. The driving wheel and the driven wheel are circumferentially provided with teeth, and the circumferential teeth of the driving wheel and the driven wheel mesh with the teeth of the bar-shaped rack.

3. The measuring device according to claim 2, characterized in that, When the circumferential teeth of the driving wheel and the driven wheel mesh with the teeth of the bar-shaped rack, there is a certain gap to adapt to the slight change in the tooth pitch distance of the bar-shaped rack when it tilts due to the inclination change of the guide rail sleeve.

4. The measuring device according to any one of claims 1-3, characterized in that A telescopic spring is provided at the position where the connecting shaft is close to the metal housing.

5. The measuring device according to claim 1, characterized in that, A rubber protection layer is provided on the outer surface of the top end of the metal housing.

6. The measuring device according to claim 1, characterized in that, It further includes an annular limiting device, which can be in interference fit with the upper inclined borehole to prevent the guide rail sleeve from sliding out of the upper inclined borehole for high-level rock stratum blasting under the action of its own weight.

7. The measuring device according to claim 6, characterized in that, The annular limiting device is selected as an annular rubber plug structure or an annular expansion spring.

8. The measuring device according to claim 1, characterized in that, It is connected to the clinometer sensor through a first cable for transmitting energy and data to the clinometer sensor; it is connected to the driving motor through a second cable for transmitting kinetic energy to the driving wheel; the first cable and the second cable are combined into a composite cable outside the metal housing.

9. The measuring device according to claim 8, characterized in that, The composite cable is connected to the host through a cable drum, and the cable drum is used for winding and unwinding the composite cable.

10. The measuring device according to claim 9, characterized in that, The host includes a display screen. The host is used for storing and displaying the measured inclination data of the upper inclined borehole. The host controls the power self-climbing probe to move from the outer end of the guide rail sleeve to the inner end or from the inner end of the guide rail sleeve to the outer end by controlling the forward or reverse rotation of the driving motor; the host can also control the rotation speed of the driving motor.

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