CN117780405A - Colliery tunnel supporting monitoring devices - Google Patents

Abstract

The invention relates to a roadway support technology, which is used for solving the problems that the inside of a roadway needs to be drilled for a plurality of times when being supported, more time is consumed, the abnormal type cannot be judged in time when the abnormality occurs in the drilling process, and the drill bit is damaged and the progress is delayed; according to the invention, the installation of the anchor rod is realized through drilling, anchoring and grouting, the drilling, anchoring and grouting work can be completed only by one drilling, the anchor rod is not required to be installed again, drilling and grouting are not required to be performed, the drilling, anchoring and grouting integration is truly realized, more time is saved, the improvement of working efficiency is facilitated, the acquisition and analysis of each data are carried out when the water injection drilling operation is carried out on the anchor rod body of the hollow structure through a plurality of modules, whether the blocking occurs during the drilling operation to cause the failure of water injection cooling of the drill bit is judged, and whether collapse occurs in the drilling to influence the later anchoring is prevented, so that abnormal conditions are not found in time and measures are taken to influence the normal operation of the anchoring support and the anchoring and grouting support.

Description

Colliery tunnel supporting monitoring devices

Technical Field

The invention relates to a roadway support technology, in particular to a coal mine roadway support monitoring device.

Background

The anchor bolt support is an economic and effective support technology, and compared with the shed type support, the anchor bolt support remarkably improves the roadway support effect, reduces the roadway support cost and lightens the labor intensity of workers;

in the prior art, operations such as drilling, anchoring and grouting are respectively carried out on a coal mine roadway by using an anchor rod drilling machine, anchoring and supporting are carried out on an anchor rod, anchoring and grouting are respectively carried out on a grouting anchor rod, and the anchor rod and the grouting anchor rod are required to be additionally installed in a punching mode, so that time and labor are wasted, meanwhile, the situation that grouting holes are blocked exists, great potential safety hazards are brought to safe production of the coal mine roadway, grouting is carried out by re-drilling grouting holes during secondary grouting operation, time and labor are consumed, and improvement of working efficiency is not facilitated;

aiming at the technical problems, the application provides a solution.

Disclosure of Invention

The invention aims to realize the installation of an anchor rod through drilling, anchoring and grouting, and can complete the drilling, anchoring and grouting work by only one drilling, the anchor rod is not required to be installed again, drilling and grouting are not required to be performed again, drilling and anchoring integration is truly realized, time is saved, the improvement of working efficiency is facilitated, when the water injection drilling operation is performed on the anchor rod body with a hollow structure through a plurality of modules, the acquisition and analysis of each data are carried out, whether the drill bit cannot be injected with water and cooled due to blockage during the drilling operation is judged, whether the collapse occurs in the drill hole to influence the later anchoring is prevented, abnormal conditions are not found in time, measures are taken to influence the normal operation of anchoring support and anchoring support, the problem that a plurality of times of drilling are required when the three operations of drilling, anchoring and anchoring are performed in the tunnel are solved, more time is consumed, the abnormal conditions are generated in the drilling process, the problem that the abnormal type is easy to cause the damage and the delay progress of the drill bit cannot be judged in time is solved, and the coal mine support monitoring device is provided.

The aim of the invention can be achieved by the following technical scheme:

the utility model provides a colliery roadway support monitoring devices, includes support subassembly and monitoring components, support subassembly includes the stock body, the inside hollow structure that is of stock body, stock body lateral wall one side has been seted up external screw thread one, stock body lateral wall one side corresponds the one position department of external screw thread installs the fastening swivel nut, the stock body outside corresponds the fastening swivel nut position department installs the grout stop, the grout stop is close to the one end of fastening swivel nut is installed the tray, the grout stop is corresponding the one end of tray position department is installed the slip casting ware, the grout stop is kept away from the slip casting hole is installed to one end of tray position department, the dust cap is installed through the slip casting return bend to slip casting ware lateral wall one side, the stock body is kept away from the one end of external screw thread one is installed the drill bit.

As a preferred implementation mode of the grouting device, the grouting stopper is sleeved outside the grouting device and then is arranged at a position corresponding to the first external thread on the anchor rod body, a sealing ring is arranged between the nut and the grouting device corresponding to the outer side of the anchor rod body, and a plurality of grouting holes which are uniformly distributed are formed in one side, away from the grouting stopper, of the outer side of the grouting device.

As a preferred implementation mode of the invention, a plurality of anchor agent outflow holes are formed in the outer side wall of the anchor rod body corresponding to the position of the drill bit, a plurality of cone thorns are formed in the anchor rod body corresponding to the position of the drill bit, and the cone thorns incline to one side of the external thread I in the anchor rod body.

As a preferred embodiment of the invention, a sealing ring fixing groove is formed at one end of the grouting device corresponding to the sealing ring, an internal threaded hole is formed at the outer side wall of the grouting device corresponding to the grouting elbow, an external thread III is formed at one end of the grouting elbow, which is close to the internal threaded hole, and an external thread II is formed at one end of the grouting elbow, which is close to the dust cap.

As a preferred embodiment of the present invention, the monitoring assembly includes a data acquisition module, a data processing module, and a data execution module;

the data acquisition module is used for monitoring the water pressure of the water flowing in the anchor rod body in real time during drilling, monitoring the water flow of each section in the drilling in real time, monitoring the propelling force of the anchor rod body in real time, and transmitting the detected water pressure data, water flow data and propelling force data to the data acquisition module;

the several places module receives the water pressure data, the water flow data and the propulsion force data transmitted by the data acquisition module, processes the water pressure data, the water flow data and the propulsion force data, generates a reverse test execution signal and a water flushing test execution signal, and transmits the reverse test execution signal and the water flushing test execution signal to the several pieces module;

and the digital execution module is used for respectively controlling the propulsion equipment and the water injection equipment to execute corresponding operations after receiving the reversing test execution signal and the water flushing test execution signal.

As a preferred embodiment of the present invention, the steps of data processing performed by the several modules are as follows:

step one: processing water pressure data, water flow data and propulsion force data, performing extremum removing and average value calculating operation on the water pressure data, the water flow data and the propulsion force data acquired in each time period to respectively obtain a water pressure average value, a water flow average value and a propulsion force average value, drawing coordinate points in a first coordinate system, a second coordinate system and a third coordinate system which are formed by the time period, the water pressure average value, the water flow average value and the propulsion force average value, and performing connecting operation on each coordinate point to obtain a connecting line;

step two: comparing the data changes corresponding to the coordinate points in a coordinate system, setting stable water pressure data as Sp, an abnormal water pressure average value as Sy, stable propulsion force data as Tp, an abnormal propulsion force average value as Ty, stable water flow data as Lp, and an abnormal water flow average value as Ly, if Sy > Sp and Ty > Tp, judging that an anchor outflow hole is blocked by hard rock, generating a reverse test execution signal, and transmitting the reverse test execution signal to a digital execution module; if Sy is greater than Sp and Ty=Tp, judging that the anchor agent outflow hole is blocked, generating a water flushing test execution signal, and transmitting the water flushing test execution signal to the number execution module; if Sy is greater than Sp and Ty is less than Tp, judging that the anchor agent outflow hole is blocked, and judging the average change of the water flow in the drill hole;

step three: if Sy > Sp, ty < Tp and Ly < Lp, judging that collapse occurs in the drill hole; if Sy > Sp, ty < Tp, and Ly > Lp or ly=lp, determining that the detection is wrong, and re-measuring; if Ly > Lp, judging that the detection is wrong, and re-measuring; if ly=lp, it is determined that the water flow is smooth; and if Ly < Lp, judging that collapse occurs in the drilling hole.

As a preferred embodiment of the present invention, the execution steps of the several execution modules are as follows;

step one: when receiving the reversing test execution signal, the digital execution module controls and pushes the anchor rod body to retract for a certain distance, and if the average value of water pressure is gradually reduced after retraction, the digital execution module judges that the hard rock blocks the outflow hole of the anchoring agent on the drill bit, so that the water pressure is increased; if the water pressure average value does not change obviously after retraction, judging that the outflow hole of the anchoring agent on the drill bit is blocked, so that the water pressure is increased, and generating a water flushing test execution signal;

step two: the number execution module gradually increases the water pressure in the anchor rod body when receiving the water flushing test execution signal, monitors the change of the water pressure at the same time, and judges that the blocking of the position of the anchoring agent outflow hole on the drill bit reaches the dredging effect through the increase of the water pressure if the average value of the water pressure suddenly decreases after the increase; if the water pressure average value is increased to the set maximum water pressure value, no obvious change exists, the blocking of the anchoring agent outflow hole on the drill bit is judged to be serious, and the anchor rod body is taken out to be manually dredged.

Compared with the prior art, the invention has the beneficial effects that:

1. through installing the drill bit at one end of the anchor rod body with a hollow structure, the anchor rod body is installed while drilling, the anchor supporting and the anchor grouting supporting operation are carried out in the anchor rod body with the hollow structure, the slurry outflow speed is accelerated during secondary grouting, the grouting time is shortened, drilling, anchoring and grouting work can be completed only by one drilling, the anchor rod body is not required to be installed again, drilling and grouting are not required to be carried out again, drilling, anchoring and grouting integration is truly realized, the time is saved, and the improvement of the working efficiency is facilitated;

2. when the water injection drilling operation is carried out on the anchor rod body of the hollow structure through the number of modules, the acquisition and analysis of each data are carried out, whether the drill bit cannot be injected with water for cooling due to blockage during the drilling operation is judged, whether collapse occurs in the drill hole to affect later anchoring is judged, and the execution of corresponding execution operation is carried out through the number of execution modules according to the judging result, so that the influence on the normal operation of the anchoring support and the anchoring support is prevented.

Drawings

The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

FIG. 1 is a main block diagram of the present invention;

FIG. 2 is a cross-sectional structural view of the present invention;

FIG. 3 is a partial cross-sectional view of the structure of the present invention;

FIG. 4 is a block diagram of various components of the present invention;

FIG. 5 is a cross-sectional view of the grouting device according to the present invention;

FIG. 6 is a mounting block diagram of the present invention;

in the figure: 1. a bolt body; 2. a drill bit; 3. an anchor agent outflow hole; 4. taper thorn; 5. an external thread I; 6. fastening the screw sleeve; 7. a nut; 8. a grouting device; 9. a dust cap; 10. grouting bent pipe; 11. a tray; 12. a grout stop plug; 13. grouting holes; 14. a seal ring; 15. an external thread II; 16. an external thread III; 17. an internal threaded hole; 18. a seal ring fixing groove; 19. drilling holes; 20. surrounding rock; 21. roadway; 22. and monitoring the assembly.

Detailed Description

The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1:

referring to fig. 1-6, a coal mine roadway support monitoring device comprises a surrounding rock 20, wherein a roadway 21 is arranged in the surrounding rock 20, a drilling 19 is arranged on one side of the inner side wall of the roadway 21, a support component and a monitoring component 22 are arranged on the inner side of the roadway 21, the support component comprises an anchor rod body 1, the inside of the anchor rod body 1 is of a hollow structure, an external thread 5 is arranged on one side of the outer side wall of the anchor rod body 1, the external thread 5 is matched with the inner diameter of a fastening screw sleeve 6, a nut 7 and a grouting device 8, a fastening screw sleeve 6 is arranged on one side of the outer side wall of the anchor rod body 1 corresponding to the position of the external thread 5, a grout stop plug 12 is arranged on one end of the grout stop plug 12, which is close to the fastening screw sleeve 6, a tray 11 is arranged on one end of the outer side wall of the anchor rod body 1, which is close to the tray 11, a grouting device 8 is arranged on one end of the grout stop plug 12 corresponding to the position of the tray 11, the outer diameter of the grouting device 8 is matched with the inner diameters of the tray 11 and the grouting stop 12, the head of the grouting device 8 is provided with a sealing ring fixing groove 18 and an internal threaded hole 17, the tail of the grouting device 8 is provided with a plurality of grouting holes 13, the dustproof cap 9 is connected with one end of the grouting elbow 10 through the external threads 15, the grouting hole 13 is arranged at one end of the grouting stop 12, which is far away from the tray 11, one side of the outer side wall of the grouting device 8 is provided with the dustproof cap 9 through the grouting elbow 10, one end of the anchor rod body 1, which is far away from the external threads 5, is provided with the drill bit 2, the grouting stop 12 is sleeved outside the grouting device 8 and then is arranged at the position of the anchor rod body 1, which corresponds to the external threads 5, a sealing ring 14 is arranged between the nut 7 and the grouting device 8, a plurality of evenly distributed grouting holes 13 are arranged at one side of the outer side of the grouting device 8, which is far away from the grouting stop 12, the anchor rod body 1 outer side wall corresponds drill bit 2 position department and has offered a plurality of anchor agent outflow hole 3, the inside drill bit 2 position department that corresponds of anchor rod body 1 is provided with a plurality of awl thorn 4, can directly be pricked by awl thorn 4 when anchor agent pushes into drill bit 2 from the inside of anchor rod body 1, and flow into drilling 19 bottom through drill bit 2 both sides anchor agent outflow hole 3, awl thorn 4 inclines in the inside one side of outside screw thread 5 of anchor rod body 1, sealing washer fixed slot 18 has been seted up to the one end of slip casting machine 8 corresponding to sealing washer 14 position department, sealing washer 14 internal diameter and the outer diameter looks adaptation of anchor rod body 1, sealing washer 14 external diameter and slip casting machine 8 head sealing washer fixed slot 18 internal diameter looks adaptation, slip casting machine 8 outer side wall corresponds slip casting return bend 10 position department and has seted up internal thread hole 17, slip casting return bend 10 links to each other with slip casting machine 8 through external thread three 16 and slip casting machine 8 head internal thread hole 17 looks adaptation, slip casting return bend 10 is close to one end of internal thread 17 has seted up external thread three 16, slip casting return bend 10 is close to one end 15 of slip casting machine 9 and has been close to the second of the internal thread 15, the outer thread 15 looks dustproof cap 9 is suited.

The installation steps of the anchor rod body 1 are specifically as follows:

step one: according to the design requirement of the coal mine tunnel 21, determining the position and depth of a drilling hole 19 required by the section of the tunnel 21, and determining the length of the corresponding anchor rod body 1 required by the repeated grouting;

step two: because the drill bit 2 is arranged at one end of the anchor rod body 1, the anchor rod body 1 can be directly used for drilling until the required length is reached, water is continuously injected while drilling, water flows into the drill bit 2 through the inside of the anchor rod body 1 and finally flows out of the anchoring agent outflow hole 3, and the continuous water injection can prevent the damage caused by overheating of the grouting drill bit 2 and can also prevent the blocking of the anchoring agent outflow hole 3;

step three: pushing the anchoring agent into the drill bit 2 from the inside of the anchor rod body 1, directly piercing the anchoring agent when the anchoring agent contacts the conical thorn 4 in the drill bit 2, and flowing into the bottom of the drilling 19 through the anchoring agent outflow holes 3 at the two sides of the drill bit 2;

step four: the grouting device 8, the grouting bent pipe 10 and the dustproof cap 9 are assembled for standby, after the anchoring agent is dried, the grouting device 8 and the grouting stop 12 are plugged into the drilling hole 19, the anchor rod body 1 and the grouting device 8 are fixed through the tray 11, the nut 7 and the fastening screw sleeve 6, and the grouting is effectively prevented from flowing out of the drilling hole 19 due to the double sealing of the sealing ring 14 and the grouting stop 12;

step five: grouting the surrounding rock 20 of the roadway 21 for the first time through the anchor rod body 1, enabling grout to flow into the drill bit 2 through the inside of the anchor rod body 1 and flow out of the anchoring agent outflow hole 3, and starting to flow back when the grout fills the bottom of the drilling 19, wherein the grout is prevented from flowing out of the drilling 19 due to the double sealing of the sealing ring 14 and the grout stop plug 12;

step six: in the initial stage of tunneling of the roadway 21, the surrounding rock 20 of the roadway 21 is seriously deformed, the dust cap 9 is opened after the surrounding rock 20 of the roadway 21 is stabilized, the grouting elbow 10 is connected, the surrounding rock 20 of the roadway 21 is subjected to secondary grouting through the grouting device 8, the inside of the roadway 21 in the surrounding rock 20 is reinforced, and the stability of the surrounding rock 20 around the roadway 21 is increased.

The anchor rod body 1 is drilled, the anchor rod body 1 is installed at the same time, the anchor rod body 1 is not required to be installed again, time and labor are saved, and the operation is convenient; primary grouting is carried out through anchor rod bodies 1 and anchor agent outflow holes 3 on two sides of a drill bit 2, secondary grouting can be carried out through a grouting device 8 after surrounding rocks 20 of a roadway 21 are stabilized, the secondary grouting can better strengthen the inside of the surrounding rocks 20 of the roadway 21, and the stability of the surrounding rocks 20 of the roadway 21 is improved; one end of the grouting device 8 is provided with a grouting bent pipe 10, one end of the grouting bent pipe 10 is provided with a dust cap 9, and grouting can be performed by only opening the dust cap 9 during secondary grouting, so that re-punching grouting is not needed, the grouting is convenient and quick, and time and labor are saved; the tail part of the grouting device 8 is provided with a plurality of grouting holes 13, so that a single grouting hole 13 can be prevented from being blocked during installation, the outflow speed of slurry can be increased during secondary grouting, and the grouting time can be shortened; the drill bit 2 is internally provided with a cone thorn 4, when the anchoring agent is pushed into the drill bit 2 from the inside of the anchor rod body 1, the anchoring agent can be directly penetrated by the cone thorn 4 and flows into the bottom of the drilling 19 through anchor agent outflow holes 3 at two sides of the drill bit 2; the two sides of the drill bit 2 are provided with a plurality of anchoring agent outflow holes 3, the drilling can be used as water injection holes, the installation can be used as the anchoring agent outflow holes 3, the grouting can be used as grouting holes 13, and the drilling is multipurpose; the two sides of the drill bit 2 are provided with a plurality of anchoring agent outflow holes 3, when the drill bit is installed, the single anchoring agent outflow holes 3 can be prevented from being blocked, when grouting is performed for the first time, the slurry outflow speed can be increased, and the grouting time can be shortened.

Example 2:

referring to fig. 1-6, the monitoring assembly 22 includes a data acquisition module, a data processing module, and a data execution module;

the data acquisition module monitors the water pressure of the water flowing in the anchor rod body 1 in real time when drilling through a water pressure meter, monitors the water flow of each section in the drill 19 in real time through a flowmeter, and monitors the propelling force of the anchor rod body 1 in real time through a pressure sensor;

when the data acquisition module receives the water pressure data, the water flow data and the propulsion force data transmitted by the data acquisition module, the data acquisition module processes the water pressure data, the water flow data and the propulsion force data, performs extremum value removal and average value calculation on the water pressure data, the water flow data and the propulsion force data acquired in each time period to respectively obtain a water pressure average value, a water flow average value and a propulsion force average value, then performs coordinate point drawing in a coordinate system of the time period and the water pressure average value, and performs connection operation on each coordinate point to obtain a connection SY; drawing coordinate points of the water flow average value corresponding to each section in the drill hole 19 in a second time period and a water flow average value coordinate system, and carrying out connection operation on each coordinate point to obtain SL1, SL2, SLn; drawing coordinate points in a coordinate system III with a time period and a propulsion force average value, and carrying out connection operation on each coordinate point to obtain a connection LD;

analyzing a connecting line SY in a coordinate system, recording stable water pressure data after water pressure tends to be stable after water injection operation starts, setting the stable water pressure data as stable water pressure data Sp, comparing water pressure average values corresponding to coordinate points, marking a time period corresponding to the coordinate points when the water pressure average value corresponding to the coordinate points is found to be larger than the stable water pressure data, marking the time period as an abnormal time period, wherein the abnormal water pressure average value is Sy, recording a propulsion force average value Ty corresponding to the time period, recording propulsion force data is Tp during stable operation, if Sy is larger than Sp and Ty is larger than Tp, judging that the drilling position of the drill bit 2 is a rock part, plugging an anchor agent outflow hole 3 on the drill bit 2 by hard rock, increasing water pressure, generating a reverse test execution signal, and transmitting the reverse test execution signal to a number execution module; if Sy > Sp and ty=tp, determining that the anchoring agent outflow hole 3 on the drill bit 2 is blocked, increasing water pressure, generating a water flushing test execution signal, and transmitting the water flushing test execution signal to the number execution module; if Sy > Sp and Ty < Tp, judging that the anchoring agent outflow hole 3 on the drill bit 2 is blocked, increasing the water pressure, and judging the average change of the water flow in the drill hole 19;

the stable water flow data is Lp, the abnormal water flow average value is Ly, if Ly is greater than Lp, the detection is judged to be wrong, and the measurement is carried out again; if ly=lp, it is determined that the water flow is smooth; if Ly < Lp, judging that collapse occurs in the drill hole 19; if Sy > Sp, ty < Tp, and Ly < Lp, determining that collapse occurs in the borehole 19; if Sy > Sp, ty < Tp, and Ly > Lp or ly=lp, it is determined that the detection is wrong, and the measurement is repeated.

When receiving the reversing test execution signal, the digital execution module controls and pushes the anchor rod body 1 to retract for a certain distance, and if the average water pressure value is gradually reduced after retraction, the digital execution module judges that the hard rock seals the anchor agent outflow hole 3 on the drill bit 2, so that the water pressure is increased; if the mean value of the water pressure does not change obviously after retraction, judging that the anchoring agent outflow hole 3 on the drill bit 2 is blocked, so that the water pressure is increased, and generating a water flushing test execution signal; when receiving the water burst test execution signal, the digital execution module gradually increases the water pressure in the anchor rod body 1 and monitors the change of the water pressure at the same time, and if the average value of the water pressure suddenly decreases after the water pressure is increased, the blocking of the anchor agent outflow hole 3 on the drill bit 2 is judged to achieve the effect of dredging through the increase of the water pressure; if the water pressure average value is increased to the set maximum water pressure value, no obvious change exists, the blocking of the anchoring agent outflow hole 3 on the drill bit 2 is judged to be serious, and the anchor rod body 1 is taken out to be manually dredged.

When the drilling machine is used, the position and depth of a drilling hole 19 required by the section of a roadway 21 are determined according to the design requirement of the coal mine roadway 21, and the length of the required grouting type drilling and anchoring integrated anchor rod is determined, as one end of the anchor rod body 1 is provided with the drill bit 2, the anchor rod body 1 can be directly used for drilling until the required length is reached, water is continuously injected while drilling, water flows into the drill bit 2 through the inside of the anchor rod body 1 and finally flows out from the anchor agent outflow hole 3, and the continuous water injection can not only prevent the damage caused by overheating of the grouting type drill bit 2, but also prevent the anchor agent outflow hole 3 from being blocked;

comparing the data changes corresponding to the coordinate points in the coordinate system I, the coordinate system II and the coordinate system III, setting stable water pressure data as Sp, setting abnormal water pressure average value as Sy, setting stable propulsion force data as Tp, setting abnormal propulsion force average value as Ty, setting stable water flow data as Lp, setting abnormal water flow average value as Ly, if Sy > Sp and Ty > Tp, judging that the anchor agent outflow hole 3 is blocked by hard rock, generating a reverse test execution signal, and transmitting the reverse test execution signal to a digital execution module; if Sy > Sp and ty=tp, determining that the anchor agent outflow hole 3 is blocked, generating a water burst test execution signal, and transmitting the water burst test execution signal to the several-execution module; if Sy > Sp and Ty < Tp, determining that the anchor agent outflow hole 3 is blocked, and determining the change of the average flow rate of the water flow in the drill hole 19;

the anchoring agent is pushed into the drill bit 2 from the inside of the anchor rod body 1, the anchoring agent is directly punctured when contacting the conical thorns 4 in the drill bit 2, and flows into the bottom of the drill hole 19 through the anchoring agent outflow holes 3 at two sides of the drill bit 2, the grouting device 8, the grouting elbow 10 and the dust cap 9 are assembled for standby, after the anchoring agent is dried, the grouting device 8 and the grouting plug 12 are plugged into the drill hole 19, the anchor rod body 1 and the grouting device 8 are fixed through the tray 11, the nut 7 and the fastening screw sleeve 6, the sealing ring 14 and the grouting plug 12 can effectively prevent grout from flowing out of the drill hole 19, primary grouting is carried out on the surrounding rock 20 of a roadway 21 through the anchor rod body 1, the grout flows into the drill bit 2 through the inside of the anchor rod body 1 and flows out of the anchoring agent outflow holes 3, when the bottom of the drill hole 19 is full of the grout, the sealing ring 14 and the grouting plug 12 are prevented from flowing out of the drill hole 19, the roadway 21 is initially driven into the surrounding rock 20 to deform, the surrounding rock 20 is opened after the roadway 21 is stabilized, the dust cap 9 is connected with the grouting elbow 10, the grouting device 21 is connected, the surrounding rock 20 is severely driven into the surrounding rock 20, and the surrounding rock 20 is strengthened in the roadway 20, and the roadway is strengthened by the surrounding rock 20.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims (7)

1. A coal mine roadway support monitoring device comprises a support assembly and a monitoring assembly (22); the utility model provides a drilling machine, its characterized in that, the support subassembly includes stock body (1), stock body (1) inside is hollow structure, stock body (1) lateral wall one side has seted up external screw thread one (5), stock body (1) lateral wall one side corresponds external screw thread one (5) position department installs fastening swivel nut (6), stock body (1) outside corresponds fastening swivel nut (6) position department installs and ends thick liquid stopper (12), it is close to end that ends thick liquid stopper (12) fastens swivel nut (6) tray (11), stock body (1) lateral wall is close to tray (11) position department installs nut (7), it corresponds to end that ends thick liquid stopper (12) located in tray (11) position department installs slip casting ware (8), end that ends thick liquid stopper (12) were kept away from tray (11) position department installs slip casting hole (13), end that ends thick liquid ware (8) lateral wall one side is installed through slip casting elbow (10) dustproof cap (9), stock body (1) one end that ends of keeping away from (5) of installing drill bit (2).

2. The coal mine roadway support monitoring device according to claim 1, wherein the grouting stop plug (12) is sleeved on the outer side of the grouting device (8) and then is arranged at a position corresponding to the first external thread (5) on the anchor rod body (1), a sealing ring (14) is arranged between the nut (7) and the grouting device (8) corresponding to the outer side of the anchor rod body (1), and a plurality of grouting holes (13) which are uniformly distributed are formed in the outer side of the grouting device (8) and away from one side of the grouting stop plug (12).

3. The coal mine roadway support monitoring device according to claim 2, wherein a plurality of anchor agent outflow holes (3) are formed in the outer side wall of the anchor rod body (1) corresponding to the position of the drill bit (2), a plurality of conical spines (4) are arranged in the anchor rod body (1) corresponding to the position of the drill bit (2), and the conical spines (4) incline to one side of the external thread I (5) in the anchor rod body (1).

4. The coal mine roadway support monitoring device according to claim 2, wherein a sealing ring fixing groove (18) is formed in one end of the grouting device (8) corresponding to the sealing ring (14), an internal threaded hole (17) is formed in the outer side wall of the grouting device (8) corresponding to the grouting elbow (10), an external thread III (16) is formed in one end, close to the internal threaded hole (17), of the grouting elbow (10), and an external thread II (15) is formed in one end, close to the dust cap (9), of the grouting elbow (10).

5. The coal mine roadway support monitoring device of claim 1, wherein the monitoring assembly (22) comprises a data acquisition module, a data processing module and a data execution module;

the method comprises the steps of monitoring water pressure of circulating water flow in an anchor rod body (1) in real time when a data acquisition module drills, monitoring water flow in each section in a drill hole (19) in real time, monitoring the propelling force of the anchor rod body (1) in real time, and transmitting detected water pressure data, water flow data and propelling force data to a data processing module;

the data acquisition module is used for acquiring water pressure data, water flow data and propulsion force data transmitted by the data acquisition module, processing the water pressure data, the water flow data and the propulsion force data to generate a reverse test execution signal and a water flushing test execution signal, and transmitting the reverse test execution signal and the water flushing test execution signal to the data acquisition module;

after receiving the reversing test execution signal and the water flushing test execution signal, the digital execution module respectively controls the propulsion equipment and the water injection equipment to execute corresponding operations.

6. The coal mine roadway support monitoring device of claim 5, wherein the data processing of the plurality of modules comprises the steps of:

step one: processing water pressure data, water flow data and propulsion force data, performing extremum removing and average value calculating operation on the water pressure data, the water flow data and the propulsion force data acquired in each time period to respectively obtain a water pressure average value, a water flow average value and a propulsion force average value, drawing coordinate points in a first coordinate system, a second coordinate system and a third coordinate system which are formed by the time period, the water pressure average value, the water flow average value and the propulsion force average value, and performing connecting operation on each coordinate point to obtain a connecting line;

step two: comparing the data changes corresponding to the coordinate points in a coordinate system, setting stable water pressure data as Sp, an abnormal water pressure average value as Sy, stable propulsion force data as Tp, an abnormal propulsion force average value as Ty, stable water flow data as Lp, and an abnormal water flow average value as Ly, if Sy > Sp and Ty > Tp, judging that the anchoring agent outflow hole (3) is blocked by hard rock, generating a reverse test execution signal, and transmitting the reverse test execution signal to a digital execution module; if Sy is greater than Sp and Ty=Tp, judging that the anchoring agent outflow hole (3) is blocked, generating a water flushing test execution signal, and transmitting the water flushing test execution signal to the number execution module; if Sy > Sp and Ty < Tp, judging that the anchoring agent outflow hole (3) is blocked, and judging the average change of the water flow rate in the drilling hole (19);

step three: if Sy > Sp, ty < Tp and Ly < Lp, judging that collapse occurs in the drill hole (19); if Sy > Sp, ty < Tp, and Ly > Lp or ly=lp, determining that the detection is wrong, and re-measuring; if Ly > Lp, judging that the detection is wrong, and re-measuring; if ly=lp, it is determined that the water flow is smooth; if Ly < Lp, judging that collapse occurs in the drill hole (19).

7. The coal mine roadway support monitoring device according to claim 5, wherein the execution steps of the number execution module are as follows;

step one: when receiving the reversing test execution signal, the digital execution module controls and pushes the anchor rod body (1) to retract for a certain distance, and if the average water pressure value is gradually reduced after retraction, the digital execution module judges that hard rock causes blocking to the anchor agent outflow hole (3) on the drill bit (2) so as to increase the water pressure; if the mean value of the water pressure does not change obviously after retraction, judging that the anchoring agent outflow hole (3) on the drill bit (2) is blocked, so that the water pressure is increased, and generating a water flushing test execution signal;

step two: when receiving the water flushing test execution signal, the digital execution module gradually increases the water pressure in the anchor rod body (1) and monitors the change of the water pressure at the same time, and if the average value of the water pressure suddenly decreases after the increase, the blocking of the position of the anchoring agent outflow hole (3) on the drill bit (2) is judged to achieve the dredging effect through the increase of the water pressure; if the water pressure average value is increased to the set maximum water pressure value, no obvious change exists, the blocking of the anchoring agent outflow hole (3) on the drill bit (2) is judged to be serious, and the anchor rod body (1) is taken out to be manually dredged.