CN114086998A - Bottom expanding and filling integrated anchoring monitoring device and method based on electromagnetic ultrasonic technology - Google Patents
Bottom expanding and filling integrated anchoring monitoring device and method based on electromagnetic ultrasonic technology Download PDFInfo
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- CN114086998A CN114086998A CN202111384547.2A CN202111384547A CN114086998A CN 114086998 A CN114086998 A CN 114086998A CN 202111384547 A CN202111384547 A CN 202111384547A CN 114086998 A CN114086998 A CN 114086998A
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- 238000004873 anchoring Methods 0.000 title claims abstract description 111
- 238000012806 monitoring device Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000005516 engineering process Methods 0.000 title claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 46
- 238000005553 drilling Methods 0.000 claims abstract description 37
- 230000006698 induction Effects 0.000 claims abstract description 25
- 239000011435 rock Substances 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims abstract description 13
- 230000005284 excitation Effects 0.000 claims description 19
- 230000009471 action Effects 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000002788 crimping Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 238000007569 slipcasting Methods 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims 1
- 230000008093 supporting effect Effects 0.000 abstract description 8
- 238000011160 research Methods 0.000 abstract description 6
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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Abstract
The base-expanding filling-up integrated anchoring monitoring device based on the electromagnetic ultrasonic technology comprises drilling, expanding and injecting integrated equipment, an anchoring assembly and electromagnetic ultrasonic monitoring equipment; drilling, expanding and injecting integrated equipment, drilling an anchoring hole with a certain depth at the top of a mine roadway, and then connecting the anchoring hole with a high-pressure pump station, wherein the high-pressure pump station injects high-pressure slurry into a filling area of surrounding rock through the drilling, expanding and injecting integrated equipment; the anchoring component is anchored in the anchoring hole, and an electromagnetic exciting coil and an induction receiving coil are wound on the anchoring component; the electromagnetic ultrasonic monitoring equipment is respectively connected with the electromagnetic exciting coil and the induction receiving coil through signal wires. The invention integrates drilling, expanding and injecting into an integrated device, saves cost, greatly simplifies operation procedures, has good hole protection effect, utilizes the electromagnetic ultrasonic technology to carry out high-precision omnibearing real-time monitoring on the supporting condition of a mine roadway, can store and copy monitoring data, is favorable for scientific research personnel to collect on-site monitoring data and further research and analyze the supporting condition.
Description
Technical Field
The invention relates to the field of mining engineering and underground engineering, in particular to a bottom-expanding filling integrated anchoring monitoring device and method based on an electromagnetic ultrasonic technology.
Background
The anchor bolt support is widely applied to the coal mine roadway support. The tensile force of the structure is transmitted through the shearing action between the anchor rod and the coal rock body, so that the mechanical property and the bearing capacity of the surrounding rock of the supporting roadway are improved, and the effect of supporting the roadway is achieved. At present, anchor rod support is not only used in mines, but also in engineering technology for main body reinforcement of side slopes, tunnels and dams.
The cementation of the coal bed and the top floor rock layer in the soft rock roadway is poor, and the characteristics of low strength, loose crushing, easy weathering, easy collapse, water swelling and the like of the coal rock body are shown, so that the mine roadway is difficult to support, most roadways have to be overhauled for many times in a service period, the normal propulsion of the stoping work is seriously influenced, the supporting cost is high, and the great safety threat is brought.
At present, two methods of increasing anchoring length and expanding anchoring hole bottom are mainly used for improving anchoring performance of the anchor rod. The method improves the anchoring force to a certain extent by increasing the anchoring length, but the method does not change the surrounding rock property of the anchor rod hole and does not improve the anchoring effect of the anchoring system fundamentally, so that the anchoring force improving effect is not obvious, the hole bottom reaming of the anchoring hole can improve the anchoring force of the anchor rod theoretically and influences the stirring effect of the anchoring agent in the hole and further influences the anchoring effect of the anchoring system.
The bottom expanding filling anchoring is a novel mode for improving the anchoring performance of the anchor rod, the bottom expanding filling is to expand the bottom of an anchor rod hole into a set shape, and a high-strength material is filled in a hole expanding part under the condition of keeping the original anchor rod hole so as to improve the physical and mechanical properties of the anchoring section drilling surrounding rock, so that the purpose of increasing the bonding capacity between an anchoring agent and the drilling surrounding rock is achieved.
The existing bottom-expanding filling and anchoring equipment mainly comprises a mining anchor rod hole thread driving type reaming drill rod and surrounding rock reinforcing and grouting equipment, namely, the reaming drill rod is firstly used for reaming, then grouting equipment is used for grouting, the reaming drill rod needs to be pulled out before grouting, the operation process is complex, and the hole collapse phenomenon is easy to occur in soft surrounding rock.
With the wide use of anchor rod anchoring and supporting systems, the monitoring of the health state of the anchor rod anchoring system becomes more and more important. The traditional monitoring method mainly comprises a drawing test and a coring method, both the two methods have certain destructiveness, the speed is low, the efficiency is low, only a small amount of sampling monitoring can be carried out to judge the overall situation, and the missing detection situation is easy to occur.
Compared with the traditional ultrasonic monitoring technology, the electromagnetic ultrasonic monitoring has the advantages of high precision, no need of a coupling agent, non-contact, suitability for high-temperature monitoring, easiness in exciting various ultrasonic waveforms and the like. Compared with the traditional anchor rod monitoring method, the electromagnetic ultrasonic monitoring has the characteristics of rapidness, convenience, long distance and the like, is a new research direction in the field of nondestructive monitoring, and is less applied to mines at present.
Disclosure of Invention
The invention aims to provide a bottom expanding and filling integrated anchoring monitoring device and method based on an electromagnetic ultrasonic technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the base-expanding filling-up integrated anchoring monitoring device based on the electromagnetic ultrasonic technology comprises drilling, expanding and injecting integrated equipment, an anchoring assembly and electromagnetic ultrasonic monitoring equipment;
drilling an anchoring hole with a certain depth at the top of a mine roadway by the drilling, expanding and injecting integrated equipment, and connecting the expanded anchoring hole with a high-pressure pump station, wherein the high-pressure pump station injects high-pressure slurry into a filling area of surrounding rock around the anchoring hole through the drilling, expanding and injecting integrated equipment;
the anchoring component is anchored in the anchoring hole, and an electromagnetic exciting coil and an induction receiving coil are wound on the anchoring component;
the electromagnetic ultrasonic monitoring equipment is respectively connected with the electromagnetic excitation coil and the induction receiving coil through signal wires, the electromagnetic ultrasonic monitoring equipment applies alternating current signals to the electromagnetic excitation coil, the electromagnetic excitation coil induces an alternating magnetic field, and the induction receiving coil generates induction voltage under the action of the alternating magnetic field and transmits the induction voltage to the electromagnetic ultrasonic monitoring equipment.
The drilling, expanding and injecting integrated equipment comprises a hollow drill bit and a hole protecting sleeve, the hollow drill bit is of a conical structure with a thin front part and a thick rear part, the rear end of the hollow drill bit is fixedly connected with the front end of the hole protecting sleeve integrally, the maximum diameter of the hollow drill bit is slightly larger than the outer diameter of the hole protecting sleeve, a plurality of funnel-shaped grouting openings which are through from inside to outside and are large in outside and small in inside are uniformly arranged on the outer circumference of the hollow drill bit and the outer circumference of the front side of the middle part of the hole protecting sleeve, three cutter grooves are arranged on the outer circumference of the hollow drill bit and are arranged in a circumferential array, the cutter grooves are arranged along the bus direction of the hollow drill bit, each cutter groove is internally provided with a reaming blade, the rear end of each reaming blade is hinged in the cutter groove at the connection part of the hollow drill bit and the hole protecting sleeve through a pin shaft, the pin shaft is vertical to the center line of the hole protecting sleeve, the diameter of the pin shaft is larger than the thickness of the hole protecting sleeve, and one side of the pin shaft, which is close to the center line of the hole protecting sleeve, is positioned in the hole protecting sleeve and the hollow drill bit, the hole protecting sleeve is fixedly arranged in the anchoring hole, and the rear end of the hole protecting sleeve is flush with the hole opening of the anchoring hole.
The anchor subassembly includes the stock, gasket and nut, the diameter of stock is the same with the sheathed tube internal diameter of hole protection, the length of stock is greater than the sheathed tube length of hole protection, the winding of electromagnetic excitation coil is fixed on the outer circumference of the preceding tip of stock, the winding of response receiving coil is fixed on the outer circumference of the rear end portion of stock, the outer circumference of stock is equipped with the external screw thread, the stock anchor is in the hole protection sleeve pipe, the front end of stock stretches into in the hole protection sleeve pipe and flushes with the sheathed tube front end of hole protection, the rear end of stock stretches out the sheathed tube rear end of hole protection, the gasket cover is in the rear lateral part of stock and is pressed tightly with the lane top in mine tunnel and contact, nut threaded connection is at the rear lateral part of stock and is pressed tightly with the gasket and is contacted.
An alternating current signal applying transmission button and a safety value setting button are arranged on the lower portion of the front side of the electromagnetic ultrasonic monitoring device, a display is arranged on the upper portion of the front side of the electromagnetic ultrasonic monitoring device, an alarm and a USB data interface are arranged on the top of the electromagnetic ultrasonic monitoring device, and the safety value setting button is in signal connection with the alarm.
The monitoring method of the bottom expanding and filling integrated anchoring monitoring device based on the electromagnetic ultrasonic technology specifically comprises the following steps:
(1) drilling an anchoring hole with a certain depth on the roadway top of the mine roadway by using the drilling, expanding and grouting integrated equipment;
(2) reaming the hole bottom of the anchoring hole by using drilling, reaming and injecting integrated equipment;
(3) grouting the filling area of the surrounding rock;
(4) anchoring the anchor rod in the anchoring hole;
(5) and monitoring the anchoring effect through electromagnetic ultrasonic monitoring equipment.
The step (1) is specifically as follows: and (3) drilling to a specified depth at the roadway top of the mine roadway by using the hollow drill bit, so as to drill the anchoring hole, so that the hole protection sleeve is fixedly arranged in the anchoring hole, the hole protection is carried out on the anchoring hole, and the rear end of the hole protection sleeve is flush with the orifice of the anchoring hole.
The step (2) is specifically as follows: the front end of the ejector rod is inserted into the hollow drill bit and extrudes the three pin shafts, so that the three reaming blades pop out to a specified angle at the same time, then the hollow drill bit continues to rotate, the three reaming blades ream the hole bottom of the anchoring hole, the anchoring hole is formed into an inverted conical hole with a large inside and a small outside, after reaming is finished, the hollow drill bit stops rotating, the ejector rod is pulled out, the three pin shafts are not extruded any more, and the three reaming blades are correspondingly retracted into the three cutter grooves respectively.
The step (3) is specifically as follows: and the rear end of the hole protection sleeve is connected with a high-pressure pump station, the high-pressure pump station pumps high-pressure slurry into the hole protection sleeve, and the high-pressure slurry is uniformly injected into a filling area of surrounding rocks around the anchoring hole through the hollow drill bit and each funnel-shaped grouting opening in the hole protection sleeve.
The step (4) is specifically as follows: after the slip casting, hole protecting sleeve and high-pressure pump station split, install hole packer in hole protecting sleeve's outer circumference middle part, carry out the shutoff to the gap between anchor hole and the hole protecting sleeve, prevent that the thick liquid from outflowing influences the anchor effect, directly squeeze into the hole protecting sleeve with the stock, make the front end of stock flush with hole protecting sleeve's front end, the rear end of stock stretches out hole protecting sleeve's rear end, overlap the gasket at the rear side portion of stock and with the lane top crimping contact in mine tunnel, nut threaded connection is at the rear side portion of stock and with the gasket crimping contact, it is firm to make the stock anchor.
The step (5) is specifically as follows: pressing down a transmission button for applying an alternating current signal, applying the alternating current signal to an electromagnetic excitation coil by an electromagnetic ultrasonic monitoring device, inducing an alternating magnetic field by the electromagnetic excitation coil, enabling the alternating magnetic field to act on an anchor rod, generating a stress wave in the anchor rod, transmitting the stress wave backwards in a guided wave mode after reflection and refraction, leading the guided wave to cause a space magnetic field change, generating an induced voltage by an induction receiving coil under the action of the alternating magnetic field, transmitting the induced voltage to the electromagnetic ultrasonic monitoring device in an electric signal mode, processing the electric signal by the electromagnetic ultrasonic monitoring device, displaying a processed image through a display, storing the processed image and data in a storage of the electromagnetic ultrasonic monitoring device, inserting a USB flash disk into a USB data interface by a worker according to needs, copying the data onto the USB flash disk, inserting the USB flash disk into a computer for further analysis of the data, and manually setting or modifying a safety value by the safety value setting button by the worker, and when the received monitoring data exceeds a safety value, triggering an alarm to automatically alarm.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, in particular, the invention bases drilling and expanding injection on the same equipment, when a hollow drill bit drills, a hole-protecting sleeve pipe drills along with the hollow drill bit, in the drilling process, three reaming blades are contained in three cutter grooves, after the hollow drill bit drills to a specified depth, the three reaming blades are simultaneously controlled to expand through a steel wire rope on the hollow drill bit to ream the bottom of an anchoring hole, then the hole-protecting sleeve pipe is fixedly supported in the anchoring hole, the rear end of the hole-protecting sleeve pipe is connected with a high-pressure pump station, the high-pressure slurry is pumped into the hole-protecting sleeve pipe by the high-pressure pump station, the high-pressure slurry is uniformly injected into a filling area of surrounding rocks around the anchoring hole through funnel-shaped grouting ports on the hollow drill bit and the hole-protecting sleeve pipe, after grouting, an anchor rod is directly injected into the hole-protecting sleeve pipe to be anchored, the mine roadway support condition high-precision all-dimensional real-time monitoring is realized through the electromagnetic ultrasonic monitoring equipment, the omission is effectively avoided, the support condition of the mine roadway can be timely judged through the alarm, corresponding measures are taken, the monitoring data can be stored and copied, so that scientific research personnel can collect the on-site monitoring data, the support condition is further researched and analyzed, the cost is saved, the operation procedures are greatly simplified, and the hole protection effect is good.
The invention integrates drilling, expanding and injecting into an integrated device, saves cost, greatly simplifies operation procedures, has good hole protection effect, utilizes the electromagnetic ultrasonic technology to carry out high-precision omnibearing real-time monitoring on the supporting condition of a mine roadway, can store and copy monitoring data, is favorable for scientific research personnel to collect on-site monitoring data and further research and analyze the supporting condition.
Drawings
Fig. 1 is a schematic diagram of the operation of the present invention.
Fig. 2 is a schematic view of the assembly structure of the drilling and reaming injection integrated equipment and the anchor rod of the invention.
Fig. 3 is an assembled perspective view of the integrated drill and injection apparatus and bolt of the present invention.
Fig. 4 is a schematic view of the structure of the core drill bit and the hole guard when the reaming blades of the present invention are not ejected.
Fig. 5 is a schematic view showing the construction of the core drill bit and the hole guard when the reamer blade of the present invention is ejected.
Detailed Description
The embodiments of the present invention are further described below with reference to the drawings.
As shown in fig. 1-5, the base-expanding and filling-up integrated anchoring monitoring device based on the electromagnetic ultrasonic technology comprises a drilling, expanding and injecting integrated device, an anchoring assembly and an electromagnetic ultrasonic monitoring device 1;
drilling, expanding and injecting integrated equipment drills an anchoring hole with a certain depth at the top of a mine roadway, expands the hole and then is connected with a high-pressure pump station (not shown), and the high-pressure pump station injects high-pressure slurry into a filling area of surrounding rock 2 around the anchoring hole through the drilling, expanding and injecting integrated equipment;
the anchoring component is anchored in the anchoring hole, and an electromagnetic exciting coil 3 and an induction receiving coil 4 are wound on the anchoring component;
the electromagnetic ultrasonic monitoring device 1 is respectively connected with the electromagnetic excitation coil 3 and the induction receiving coil 4 through signal wires 5, the electromagnetic ultrasonic monitoring device 1 applies alternating current signals to the electromagnetic excitation coil 3, the electromagnetic excitation coil 3 induces an alternating magnetic field, and the induction receiving coil 4 generates induction voltage under the action of the alternating magnetic field and transmits the induction voltage to the electromagnetic ultrasonic monitoring device 1.
The drilling, expanding and injecting integrated equipment comprises a hollow drill bit 6 and a hole protection sleeve 7, the hollow drill bit 6 is of a conical structure with a thin front part and a thick rear part, the rear end of the hollow drill bit 6 is fixedly connected with the front end of the hole protection sleeve 7 integrally, the maximum diameter of the hollow drill bit 6 is slightly larger than the outer diameter of the hole protection sleeve 7, a plurality of funnel-shaped grouting openings 8 which are through from inside to outside and are large and small in outside are uniformly arranged on the outer circumference of the hollow drill bit 6 and the outer circumference of the front side of the middle part of the hole protection sleeve 7, three cutter grooves 9 are arranged on the outer circumference of the hollow drill bit 6 in a circumferential array mode, the cutter grooves 9 are arranged along the bus direction of the hollow drill bit 6, each cutter groove 9 is internally provided with a reaming blade 10, the rear end of the reaming blade 10 is hinged in the cutter groove 9 at the connection part of the hollow drill bit 6 and the hole protection sleeve 7 through a pin shaft 19, the pin shaft 19 is vertical to the center line of the hole protection sleeve 7, the diameter of the pin shaft 19 is larger than the thickness of the hole protection sleeve 7, and one side of the pin shaft 19 close to the center line of the hole protection sleeve 7 is positioned at the position In the hole protecting sleeve 7 and the hollow drill bit 6, the hole protecting sleeve 7 is fixedly arranged in the anchoring hole, and the rear end of the hole protecting sleeve 7 is flush with the hole opening of the anchoring hole.
The anchor assembly comprises an anchor rod 11, a gasket 12 and a nut 13, the diameter of the anchor rod 11 is the same as the inner diameter of the hole protection sleeve 7, the length of the anchor rod 11 is larger than that of the hole protection sleeve 7, an electromagnetic excitation coil 3 is wound and fixed on the outer circumference of the front end of the anchor rod 11, an induction receiving coil 4 is wound and fixed on the outer circumference of the rear end of the anchor rod 11, an external thread is arranged on the outer circumference of the anchor rod 11, the anchor rod 11 is anchored in the hole protection sleeve 7, the front end of the anchor rod 11 extends into the hole protection sleeve 7 and is flush with the front end of the hole protection sleeve 7, the rear end of the anchor rod 11 extends out of the rear end of the hole protection sleeve 7, the gasket 12 is sleeved on the rear side of the anchor rod 11 and is in pressing contact with the top of a mine roadway, and the nut 13 is in threaded connection with the rear side of the anchor rod 11 and in pressing contact with the gasket 12.
An alternating current signal applying transmission button 14 and a safety value setting button 15 are arranged on the lower portion of the front side of the electromagnetic ultrasonic monitoring device 1, a display 16 is arranged on the upper portion of the front side of the electromagnetic ultrasonic monitoring device 1, an alarm 17 and a USB data interface 18 are arranged on the top of the electromagnetic ultrasonic monitoring device 1, and the safety value setting button 15 is in signal connection with the alarm 17.
The monitoring method of the bottom expanding and filling integrated anchoring monitoring device based on the electromagnetic ultrasonic technology specifically comprises the following steps:
(1) drilling an anchoring hole with a certain depth on the roadway top of the mine roadway by using the drilling, expanding and grouting integrated equipment;
(2) reaming the hole bottom of the anchoring hole by using drilling, reaming and injecting integrated equipment;
(3) grouting the filling area of the surrounding rock 2;
(4) anchoring the anchor rod 11 in the anchoring hole;
(5) and monitoring the anchoring effect through the electromagnetic ultrasonic monitoring equipment 1.
The step (1) is specifically as follows: and (3) drilling to a specified depth at the roadway top of the mine roadway by using the hollow drill bit 6 so as to drill an anchoring hole, so that the hole protection sleeve 7 is fixedly arranged in the anchoring hole, the hole protection is carried out on the anchoring hole, and the rear end of the hole protection sleeve 7 is flush with the orifice of the anchoring hole.
The step (2) is specifically as follows: an ejector rod 20 with a conical front end is pushed into the hole protecting sleeve 7, the front end of the ejector rod 20 is inserted into the hollow drill bit 6 and extrudes the three pin shafts 19, three reaming blades 10 are simultaneously popped to a specified angle, then the hollow drill bit 6 continues to rotate, so that the three reaming blades 10 ream the hole bottom of the anchoring hole, the anchoring hole is formed into an inverted conical hole with a large inside and a small outside, after reaming is finished, the hollow drill bit 6 stops rotating, the ejector rod 20 is pulled out, the three pin shafts 19 are not extruded any more, and the three reaming blades 10 are correspondingly retracted into the three cutter grooves 9 respectively.
The step (3) is specifically as follows: the rear end of the hole-protecting sleeve 7 is connected with a high-pressure pump station, the high-pressure pump station pumps high-pressure slurry into the hole-protecting sleeve 7, and the high-pressure slurry is uniformly injected into a filling area of the surrounding rock 2 around the anchoring hole through the hollow drill 6 and the funnel-shaped grouting openings 8 in the hole-protecting sleeve 7.
The step (4) is specifically as follows: after grouting, the hole protecting sleeve 7 is detached from the high-pressure pump station, the hole packer 21 is installed in the middle of the outer circumference of the hole protecting sleeve 7, a gap between an anchoring hole and the hole protecting sleeve 7 is plugged, slurry outflow is prevented from influencing the anchoring effect, the anchor rod 11 is directly driven into the hole protecting sleeve 7, the front end of the anchor rod 11 is flush with the front end of the hole protecting sleeve 7, the rear end of the anchor rod 11 extends out of the rear end of the hole protecting sleeve 7, the gasket 12 is sleeved on the rear side portion of the anchor rod 11 and is in tight pressing contact with the roadway top of a mine roadway, the nut 13 is in threaded connection with the rear side portion of the anchor rod 11 and is in tight pressing contact with the gasket 12, and the anchor rod 11 is firmly anchored.
The step (5) is specifically as follows: an alternating current signal transmission button 14 is pressed, an alternating current signal is applied to an electromagnetic excitation coil 3 by an electromagnetic ultrasonic monitoring device 1, an alternating magnetic field is induced by the electromagnetic excitation coil 3, the alternating magnetic field acts on an anchor rod 11, stress waves are generated in the anchor rod 11 and are transmitted backwards in a guided wave mode after being reflected and refracted, the guided wave causes a space magnetic field to change, an induction receiving coil 4 generates induction voltage under the action of the alternating magnetic field and transmits the induction voltage to the electromagnetic ultrasonic monitoring device 1 in an electric signal mode, the electromagnetic ultrasonic monitoring device 1 receives the electric signal and processes the electric signal and displays the processed image through a display 16, the processed image and data are stored in a storage of the electromagnetic ultrasonic monitoring device 1, a worker inserts a USB flash disk on a USB data interface 18 according to needs, copies the data to the USB flash disk, then inserts the USB flash disk on a computer to further analyze the data, the worker sets or modifies the safety value manually through the safety value setting button 15, and triggers the alarm 17 to automatically alarm when the received monitoring data exceeds the safety value.
The above embodiments are merely to illustrate rather than to limit the technical solutions of the present invention, and although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention any modifications and equivalents.
Claims (10)
1. Expand end benefit and fill up integration anchor monitoring devices based on electromagnetic ultrasonic technology, its characterized in that: the device comprises drilling, expanding and injecting integrated equipment, an anchoring assembly and electromagnetic ultrasonic monitoring equipment;
drilling an anchoring hole with a certain depth at the top of a mine roadway by the drilling, expanding and injecting integrated equipment, and connecting the expanded anchoring hole with a high-pressure pump station, wherein the high-pressure pump station injects high-pressure slurry into a filling area of surrounding rock around the anchoring hole through the drilling, expanding and injecting integrated equipment;
the anchoring assembly is anchored in the anchoring hole, and an electromagnetic excitation coil and an induction receiving coil are wound on the anchoring assembly;
the electromagnetic ultrasonic monitoring equipment is respectively connected with the electromagnetic excitation coil and the induction receiving coil through signal wires, the electromagnetic ultrasonic monitoring equipment applies alternating current signals to the electromagnetic excitation coil, the electromagnetic excitation coil induces an alternating magnetic field, and the induction receiving coil generates induction voltage under the action of the alternating magnetic field and transmits the induction voltage to the electromagnetic ultrasonic monitoring equipment.
2. The base-expanding and filling integrated anchoring monitoring device based on the electromagnetic ultrasonic technology as claimed in claim 1, wherein: the drilling, expanding and injecting integrated equipment comprises a hollow drill bit and a hole protecting sleeve, the hollow drill bit is of a conical structure with a thin front part and a thick rear part, the rear end of the hollow drill bit is fixedly connected with the front end of the hole protecting sleeve integrally, the maximum diameter of the hollow drill bit is slightly larger than the outer diameter of the hole protecting sleeve, a plurality of funnel-shaped grouting openings which are through from inside to outside and are large in outside and small in inside are uniformly arranged on the outer circumference of the hollow drill bit and the outer circumference of the front side of the middle part of the hole protecting sleeve, three cutter grooves are arranged on the outer circumference of the hollow drill bit and are arranged in a circumferential array, the cutter grooves are arranged along the bus direction of the hollow drill bit, each cutter groove is internally provided with a reaming blade, the rear end of each reaming blade is hinged in the cutter groove at the connection part of the hollow drill bit and the hole protecting sleeve through a pin shaft, the pin shaft is vertical to the center line of the hole protecting sleeve, the diameter of the pin shaft is larger than the thickness of the hole protecting sleeve, and one side of the pin shaft, which is close to the center line of the hole protecting sleeve, is positioned in the hole protecting sleeve and the hollow drill bit, the hole protecting sleeve is fixedly arranged in the anchoring hole, and the rear end of the hole protecting sleeve is flush with the hole opening of the anchoring hole.
3. The base-expanding and filling integrated anchoring monitoring device based on the electromagnetic ultrasonic technology as claimed in claim 2, wherein: the anchor subassembly includes the stock, gasket and nut, the diameter of stock is the same with the sheathed tube internal diameter of hole protection, the length of stock is greater than the sheathed tube length of hole protection, the winding of electromagnetic excitation coil is fixed on the outer circumference of the preceding tip of stock, the winding of response receiving coil is fixed on the outer circumference of the rear end portion of stock, the outer circumference of stock is equipped with the external screw thread, the stock anchor is in the hole protection sleeve pipe, the front end of stock stretches into in the hole protection sleeve pipe and flushes with the sheathed tube front end of hole protection, the rear end of stock stretches out the sheathed tube rear end of hole protection, the gasket cover is in the rear lateral part of stock and is pressed tightly with the lane top in mine tunnel and contact, nut threaded connection is at the rear lateral part of stock and is pressed tightly with the gasket and is contacted.
4. The base-expanding and filling integrated anchoring monitoring device based on the electromagnetic ultrasonic technology as claimed in claim 3, wherein: an alternating current signal applying transmission button and a safety value setting button are arranged on the lower portion of the front side of the electromagnetic ultrasonic monitoring device, a display is arranged on the upper portion of the front side of the electromagnetic ultrasonic monitoring device, an alarm and a USB data interface are arranged on the top of the electromagnetic ultrasonic monitoring device, and the safety value setting button is in signal connection with the alarm.
5. The monitoring method of the bottom-expanding filling-up integrated anchoring monitoring device based on the electromagnetic ultrasonic technology as claimed in claim 4, wherein: the method specifically comprises the following steps:
(1) drilling an anchoring hole with a certain depth at the top of a mine roadway by using drilling, expanding and injecting integrated equipment;
(2) reaming the hole bottom of the anchoring hole by using drilling, reaming and injecting integrated equipment;
(3) grouting the filling area of the surrounding rock;
(4) anchoring the anchor rod in the anchoring hole;
(5) and monitoring the anchoring effect through electromagnetic ultrasonic monitoring equipment.
6. The monitoring method of the under-reamed and filling integrated anchoring monitoring device based on the electromagnetic ultrasonic technology as claimed in claim 5, wherein: the step (1) is specifically as follows: and (3) drilling to a specified depth at the roadway top of the mine roadway by using the hollow drill bit, so that the anchoring hole is drilled, the hole protection sleeve is fixedly arranged in the anchoring hole, the hole protection is carried out on the anchoring hole, and the rear end of the hole protection sleeve is flush with the orifice of the anchoring hole.
7. The monitoring method of the under-reamed and filling integrated anchoring monitoring device based on the electromagnetic ultrasonic technology as claimed in claim 5, wherein: the step (2) is specifically as follows: the front end of the ejector rod is inserted into the hollow drill bit and extrudes three pin shafts, three reaming blades are simultaneously popped out to a specified angle, then the hollow drill bit continues to rotate, so that the three reaming blades ream the hole bottom of the anchoring hole, the anchoring hole is formed into an inverted conical hole with a large inside and a small outside, after reaming is finished, the hollow drill bit stops rotating, the ejector rod is pulled out, the three pin shafts are not extruded any more, and the three reaming blades respectively correspond to be retracted into the three cutter grooves.
8. The monitoring method of the under-reamed and filling integrated anchoring monitoring device based on the electromagnetic ultrasonic technology as claimed in claim 5, wherein: the step (3) is specifically as follows: and the rear end of the hole protection sleeve is connected with a high-pressure pump station, the high-pressure pump station pumps high-pressure slurry into the hole protection sleeve, and the high-pressure slurry is uniformly injected into a filling area of surrounding rocks around the anchoring hole through the hollow drill bit and each funnel-shaped grouting opening in the hole protection sleeve.
9. The monitoring method of the under-reamed and filling integrated anchoring monitoring device based on the electromagnetic ultrasonic technology as claimed in claim 5, wherein: the step (4) is specifically as follows: after the slip casting, hole protecting sleeve and high-pressure pump station split, install hole packer in hole protecting sleeve's outer circumference middle part, carry out the shutoff to the gap between anchor hole and the hole protecting sleeve, prevent that the thick liquid from outflowing influences the anchor effect, directly squeeze into the hole protecting sleeve with the stock, make the front end of stock flush with hole protecting sleeve's front end, the rear end of stock stretches out hole protecting sleeve's rear end, overlap the gasket at the rear side portion of stock and with the lane top crimping contact in mine tunnel, nut threaded connection is at the rear side portion of stock and with the gasket crimping contact, it is firm to make the stock anchor.
10. The monitoring method of the under-reamed and filling integrated anchoring monitoring device based on the electromagnetic ultrasonic technology as claimed in claim 5, wherein: the step (5) is specifically as follows: pressing a transmission button for applying an alternating current signal, applying the alternating current signal to an electromagnetic excitation coil by an electromagnetic ultrasonic monitoring device, inducing an alternating magnetic field by the electromagnetic excitation coil, enabling the alternating magnetic field to act on an anchor rod, generating stress waves in the anchor rod, transmitting the stress waves backwards in a guided wave mode after reflection and refraction, leading the guided wave to cause space magnetic field change, generating induction voltage by an induction receiving coil under the action of the alternating magnetic field, transmitting the induction voltage to the electromagnetic ultrasonic monitoring device in an electric signal mode, processing the electric signal by the electromagnetic ultrasonic monitoring device, displaying a processed image through a display, storing the processed image and data in a storage of the electromagnetic ultrasonic monitoring device, inserting a USB flash disk into a USB data interface by a worker according to needs, copying the data to the USB flash disk, inserting the USB flash disk into a computer for further analysis, and manually setting or modifying a safety value through a safety value setting button by the worker, and when the received monitoring data exceeds a safety value, triggering an alarm to automatically alarm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111384547.2A CN114086998A (en) | 2021-11-22 | 2021-11-22 | Bottom expanding and filling integrated anchoring monitoring device and method based on electromagnetic ultrasonic technology |
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| CN202111384547.2A CN114086998A (en) | 2021-11-22 | 2021-11-22 | Bottom expanding and filling integrated anchoring monitoring device and method based on electromagnetic ultrasonic technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118008414A (en) * | 2024-04-08 | 2024-05-10 | 山东创力邦迈智能科技有限公司 | Automatic anchor loading equipment |
| CN118110541A (en) * | 2024-04-30 | 2024-05-31 | 北京科技大学 | Surrounding rock reinforcing grouting system for underworkings of metal mines |
-
2021
- 2021-11-22 CN CN202111384547.2A patent/CN114086998A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118008414A (en) * | 2024-04-08 | 2024-05-10 | 山东创力邦迈智能科技有限公司 | Automatic anchor loading equipment |
| CN118008414B (en) * | 2024-04-08 | 2024-07-23 | 山东创力邦迈智能科技有限公司 | Automatic anchor loading equipment |
| CN118110541A (en) * | 2024-04-30 | 2024-05-31 | 北京科技大学 | Surrounding rock reinforcing grouting system for underworkings of metal mines |
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