CN212428834U - Mining high-voltage discharge auxiliary rock breaking development machine - Google Patents
Mining high-voltage discharge auxiliary rock breaking development machine Download PDFInfo
- Publication number
- CN212428834U CN212428834U CN202021933284.7U CN202021933284U CN212428834U CN 212428834 U CN212428834 U CN 212428834U CN 202021933284 U CN202021933284 U CN 202021933284U CN 212428834 U CN212428834 U CN 212428834U
- Authority
- CN
- China
- Prior art keywords
- voltage
- rock
- electrode
- breaking
- heading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a mining high-voltage discharge auxiliary rock-breaking development machine, wherein a plurality of cutting head picks and a plurality of rock-breaking electrode groups are uniformly arranged at intervals on the development surface of a tool bit; when the tunneling machine tunnels, the rock breaking electrode group of the cutter head forms a discharge channel at the rock stratum so that the rock stratum is loosened to improve the tunneling efficiency; the utility model discloses help improving tunnelling speed, reduce the working face dust, effectively solve the slow problem of rock gangway tunnelling speed.
Description
Technical Field
The utility model belongs to the technical field of the engineering construction technique and specifically relates to a mining high-voltage discharge assists entry driving machine of broken rock.
Background
The rock roadway of the mine is mainly constructed by a drilling and blasting construction method, a cantilever type tunneling machine construction method or a TBM machine excavation construction method.
In the drilling and blasting construction method, due to the problems of low rock breaking efficiency, low loading and transporting efficiency, low supporting efficiency, high dust concentration and the like, the tunneling speed is slow, occupational diseases are high, particularly, the tunneling of large-section rock roadways such as development preparation and the like is slower, and the orderly succession of a horizontal mining area is seriously restricted; although the TBM machine has a plurality of advantages, the engineering progress is limited in hard rock areas, and the cutter head loss is accelerated.
The traditional cantilever type heading machine and the construction method of the TBM machine have the following defects:
1. cutting efficiency is lower, influences the construction progress, and is high to the environmental requirement. The mechanized operation line mainly based on the cantilever type heading machine is mainly suitable for the conditions that geological conditions are simple, the section of a roadway is 16-35 m2, the Poulension coefficient of rock is not more than 8, the length of the roadway is more than 2000 m, the curvature radius of the excavated roadway is required to be large, the requirement of the roadway in China cannot be met, particularly, the lithological change is large, the adaptability is poor when the geological conditions such as water burst and fault fracture zones are met, the heading speed is obviously reduced, and even the operation cannot be carried out.
2. And the dust fall efficiency of the tunneling working face is low. The currently generally adopted internal and external spraying dust-settling modes can not meet the environmental requirements of underground tunneling working faces.
3. The engineering progress of harder rock sections is often restricted to a certain extent, and the cutter head loss is accelerated.
4. The potential safety hazard is higher, causes mechanical injury easily, and the rock damage degree is big.
Disclosure of Invention
The utility model provides a mining high-voltage discharge assists entry driving machine of broken rock improves tunnelling speed, reduces the working face dust, effectively solves the slow problem of rock gangway tunnelling speed.
The utility model adopts the following technical scheme.
A mining high-voltage discharge rock-breaking-assisted heading machine is characterized in that a plurality of cutting heads (9) and a plurality of rock-breaking electrode groups are uniformly arranged at intervals on a heading face of a cutter head (6); when the heading machine is heading, the rock breaking electrode group of the cutter head forms a discharge channel (1) at the rock stratum to loosen the rock stratum (4) so as to improve the heading efficiency.
The spiral line position that cutting head pick, broken rock electrode group are located is the heliciform overall arrangement setting on the tool bit, in the heliciform overall arrangement, cutting head pick place helix, broken rock electrode group place helix are parallel to each other.
The rock breaking electrode group comprises a high-voltage electrode (2) and a low-voltage electrode (3); the high-voltage electrode and the low-voltage electrode in each rock breaking electrode group are arranged on the position of a spiral line where the rock breaking electrode group is located, and the distance between the high-voltage electrode and the low-voltage electrode in the same group is smaller than the distance between the high-voltage electrode and the low-voltage electrode in different groups.
The high-voltage electrodes and the low-voltage electrodes in the rock breaking electrode groups are the same in distance.
An electrode cavity for accommodating a high-voltage electrode and a low-voltage electrode is arranged in the rock breaking electrode group; the electrode cavity is communicated with a water pipe (17); when the heading machine is heading, deionized water (5) injected by a water pipe in the electrode cavity forms an insulating layer so as to prevent the high-voltage electrode and the low-voltage electrode from forming discharge arcs in the electrode cavity.
The electrode cavity is provided with a water drainage hole; when the heading machine is heading, the water pipe injects flowing deionized water into the electrode cavity to prevent dust from entering the electrode cavity.
A high-voltage electric disc (12) communicated with the electrode cavity is arranged behind the cutter head of the heading machine; when the development machine develops, the water pipe sends deionized water to the high-voltage disk, so that the deionized water enters the electrode cavity; a high-voltage energy storage capacitor (10) connected with the rock breaking electrode group is arranged at the high-voltage electric disc; the high-voltage energy storage capacitor is formed by connecting a plurality of capacitors with low inductance in series; the high-voltage energy storage capacitor is connected with a transformer (13); the transformer is connected with a high-voltage pulse power supply (16) through a pulse transmission line (15).
The heading machine comprises a vehicle body (107) with a traveling part (101); the upper part of the front end of the vehicle body supports a cutter head (6) through a support rod, and a shovel plate part (109) connected with the vehicle body is arranged below the cutter head; a transport part (108) is arranged at the upper part of the rear end of the vehicle body;
when the heading machine is heading, the supporting part (11) at the rear part of the vehicle body is abutted against the ground to prevent the vehicle body from retreating, the amplitude voltage of the rock breaking electrode group of the cutter head is 30-50kV, and the single energy is 10-20J.
The mining high-voltage discharge rock-breaking-assisted tunneling machine comprises the following steps during construction;
a1, firstly, conveying deionized water to the position of a rock breaking electrode group of the heading machine tool bit through a water pipe, so that a cavity between a high-voltage electrode and a low-voltage electrode of the rock breaking electrode group is filled with the deionized water;
a2, starting a high-voltage pulse power supply, outputting high-voltage pulses to an electrode through a pulse transmission line, and enabling the high-voltage electrode and a low-voltage electrode to be in contact with rocks to be crushed; when the high voltage pulse arrives, electric discharge is generated between the high voltage electrode and the low voltage electrode, and the rock to be crushed is initially crushed.
Step A3, the high-voltage electrode and the low-voltage electrode also rotate along with the cutter head when discharging; the rock becomes loose under the action of the discharge channel, and the tip of the electrode rotates along with the cutter head to scrape the rock;
the cutter head rotates and moves forward, and the cutting head picks at the cutter head are driven to cut the rock at the tunneling face again, so that the rock is further crushed.
Before the step A1, equipment and surrounding roadway working condition inspection needs to be carried out on the heading machine, and corresponding hidden danger treatment needs to be carried out; in step a3, the further crushed rock falls on the blade portion below the cutter head, and is then discharged by the transport portion at the rear of the heading machine.
The utility model discloses be favorable to improving big section rock tunnel tunnelling efficiency, shorten the ore deposit and build the cycle, effectively solve the slow problem of big section rock tunnel tunnelling speed. Improving the mechanization level and reducing the labor intensity. All construction operations are carried out under reliable support, and the operation safety is further improved. The smoke and dust generated by blasting are avoided in construction, the construction operation environment is improved, and the health level of workers is guaranteed.
The utility model discloses a tunnelling mechanized construction, furthest has reduced the damage degree to the tunnel country rock, reduces the country rock disturbance for tunnel shaping is of high quality, thereby has maintained the bearing capacity of tunnel country rock, has reduced the tunnel maintenance cost.
The high-voltage pulse discharge crushing adopted by the utility model is a green and controllable crushing technology with high speed, has selectivity to the crushing of ores with metal inclusions, controllable energy, no pollution and no flying stones; the technology has the technical advantages that after the electric breakdown of the rock, the plasma channel is generated at the place with the largest field intensity distortion, usually at the interface of a mineral metal crystal grain and the rock body, the ore can be selectively crushed by utilizing the property, and the method can be used for crushing precious metal ore with high crushing value and recycling and refining gold and silver materials, so as to realize the enrichment treatment of the precious metal ore with insufficient grade.
The amplitude voltage of equipment 30-50kV, single energy are 10-20J pulse discharge broken rock, use pulse discharge under this condition just can realize the miniaturization of broken equipment, long-life and the security that improves equipment. And continuous tunneling of the rock is realized.
Drawings
The invention will be described in further detail with reference to the following drawings and detailed description:
FIG. 1 is a schematic diagram of the discharge channel for breaking rock strata according to the present invention;
FIG. 2 is a schematic diagram of the heading machine tool bit and power supply connection of the present invention;
fig. 3 is a schematic structural diagram of the unmanned excavator of the present invention;
in the figure: 1-a discharge channel; 2-a high voltage electrode; 3-a low voltage electrode; 4-a rock formation; 5-deionized water; 6, a cutter head; 9-cutting head picks; 10-high voltage energy storage capacitor; 11-a support; 12-high voltage electrical panel; 13-a transformer; 14-an infrared device; 15-a pulse transmission line; 16-a high voltage pulse power supply; 17-a water pipe;
101-a walking part; 107-vehicle body; 108-a transport section; 109-shovel portion.
Detailed Description
As shown in the figure, a high-voltage discharge rock-breaking-assisted tunneling machine for mines is characterized in that a plurality of cutting head picks 9 and a plurality of rock-breaking electrode groups are uniformly arranged at intervals on a tunneling surface of a tool bit 6; when the heading machine is heading, the rock breaking electrode group of the cutter head forms a discharge channel 1 at the rock stratum to loosen the rock stratum 4 so as to improve the heading efficiency.
The spiral line position that cutting head pick, broken rock electrode group are located is the heliciform overall arrangement setting on the tool bit, in the heliciform overall arrangement, cutting head pick place helix, broken rock electrode group place helix are parallel to each other.
The rock breaking electrode group comprises a high-voltage electrode 2 and a low-voltage electrode 3; the high-voltage electrode and the low-voltage electrode in each rock breaking electrode group are arranged on the position of a spiral line where the rock breaking electrode group is located, and the distance between the high-voltage electrode and the low-voltage electrode in the same group is smaller than the distance between the high-voltage electrode and the low-voltage electrode in different groups.
The high-voltage electrodes and the low-voltage electrodes in the rock breaking electrode groups are the same in distance.
An electrode cavity for accommodating a high-voltage electrode and a low-voltage electrode is arranged in the rock breaking electrode group; the electrode cavity is communicated with a water pipe 17; when the heading machine is heading, deionized water 5 injected into the electrode cavity through a water pipe forms an insulating layer so as to prevent the high-voltage electrode and the low-voltage electrode from forming discharge arcs in the electrode cavity.
The electrode cavity is provided with a water drainage hole; when the heading machine is heading, the water pipe injects flowing deionized water into the electrode cavity to prevent dust from entering the electrode cavity.
A high-voltage electric disc 12 communicated with the electrode cavity is arranged behind the cutter head of the tunneling machine; when the development machine develops, the water pipe sends deionized water to the high-voltage disk, so that the deionized water enters the electrode cavity; a high-voltage energy storage capacitor 10 connected with the rock breaking electrode group is arranged at the high-voltage electric disc; the high-voltage energy storage capacitor is formed by connecting a plurality of capacitors with low inductance in series; the high-voltage energy storage capacitor is connected with a transformer 13; the transformer is connected to a high voltage pulse power supply 16 via a pulse transmission line 15.
The heading machine includes a vehicle body 107 with a traveling part 101; the upper part of the front end of the vehicle body supports the cutter head 6 through a support rod, and a shovel plate part 109 connected with the vehicle body is arranged below the cutter head; a transportation part 108 is arranged at the upper part of the rear end of the vehicle body;
when the heading machine is heading, the supporting part 11 at the rear part of the vehicle body is abutted against the ground to prevent the vehicle body from retreating, the amplitude voltage of the rock breaking electrode group of the cutter head is 30-50kV, and the single energy is 10-20J.
The mining high-voltage discharge rock-breaking-assisted tunneling machine comprises the following steps during construction;
a1, firstly, conveying deionized water to the position of a rock breaking electrode group of the heading machine tool bit through a water pipe, so that a cavity between a high-voltage electrode and a low-voltage electrode of the rock breaking electrode group is filled with the deionized water;
a2, starting a high-voltage pulse power supply, outputting high-voltage pulses to an electrode through a pulse transmission line, and enabling the high-voltage electrode and a low-voltage electrode to be in contact with rocks to be crushed; when the high voltage pulse arrives, electric discharge is generated between the high voltage electrode and the low voltage electrode, and the rock to be crushed is initially crushed.
Step A3, the high-voltage electrode and the low-voltage electrode also rotate along with the cutter head when discharging; the rock becomes loose under the action of the discharge channel, and the tip of the electrode rotates along with the cutter head to scrape the rock;
the cutter head rotates and moves forward, and the cutting head picks at the cutter head are driven to cut the rock at the tunneling face again, so that the rock is further crushed.
Before the step A1, equipment and surrounding roadway working condition inspection needs to be carried out on the heading machine, and corresponding hidden danger treatment needs to be carried out; in step a3, the further crushed rock falls on the blade portion below the cutter head, and is then discharged by the transport portion at the rear of the heading machine.
In the embodiment, the construction operation is mainly divided into two stages, wherein the first stage is the high-voltage electric strike on the rock surface, the technology is that the rock is damaged by using the mechanical effect of shock waves, jet flow or plasma channels generated by pulse discharge, a discharge electrode at the front end of the equipment is tightly contacted with the rock, the electric field intensity is strong enough to break down the rock body, and the plasma channels are generated in the rock body. The rock becomes loose under the action of the electric discharge, thereby realizing the rapid drilling of the hard rock. And in the second stage, the rock surface is cut by rotating the cutter head, the cutter head with the hob is used for extruding and cutting the rock, and the cut rock is conveyed to a rear slag car by the bottom shovel plate through the conveying equipment arranged on the machine body.
In this example, the process of breaking rock by pulsed plasma can be divided into two stages: the first stage is a plasma shock wave propagation process, in the process, the shock wave transfers energy to rock mass around a channel and is completely converted into kinetic energy of the rock mass, the duration of the process is short, the process can be considered to be completed instantly, and the rock is not deformed and crushed; the rock mass around the passage in the second stage starts to move at the speed obtained in the first stage, and because the initial speed obtained by the rock mass medium is not consistent, the displacement difference generated by the relative movement can deform the rock mass, and finally the rock is crushed.
In this example, the discharge voltage is regulated by a transformer.
Claims (9)
1. The utility model provides a mining high-voltage discharge assists entry driving machine of broken rock which characterized in that: the heading machine is characterized in that a plurality of cutting heads (9) and a plurality of rock breaking electrode groups are uniformly arranged at intervals on the heading face of a cutter head (6); when the heading machine is heading, the rock breaking electrode group of the cutter head forms a discharge channel (1) at the rock stratum to loosen the rock stratum (4) so as to improve the heading efficiency.
2. The mining high-voltage discharge rock-breaking-assisted heading machine according to claim 1, characterized in that: the spiral line position that cutting head pick, broken rock electrode group are located is the heliciform overall arrangement setting on the tool bit, in the heliciform overall arrangement, cutting head pick place helix, broken rock electrode group place helix are parallel to each other.
3. The mining high-voltage discharge rock-breaking-assisted heading machine according to claim 2, characterized in that: the rock breaking electrode group comprises a high-voltage electrode (2) and a low-voltage electrode (3); the high-voltage electrode and the low-voltage electrode in each rock breaking electrode group are arranged on the position of a spiral line where the rock breaking electrode group is located, and the distance between the high-voltage electrode and the low-voltage electrode in the same group is smaller than the distance between the high-voltage electrode and the low-voltage electrode in different groups.
4. The mining high-voltage discharge rock-breaking-assisted heading machine according to claim 3, characterized in that: the high-voltage electrodes and the low-voltage electrodes in the rock breaking electrode groups are the same in distance.
5. The mining high-voltage discharge rock-breaking-assisted heading machine according to claim 4, characterized in that: an electrode cavity for accommodating a high-voltage electrode and a low-voltage electrode is arranged in the rock breaking electrode group; the electrode cavity is communicated with a water pipe (17); when the heading machine is heading, deionized water (5) injected by a water pipe in the electrode cavity forms an insulating layer so as to prevent the high-voltage electrode and the low-voltage electrode from forming discharge arcs in the electrode cavity.
6. The mining high-voltage discharge rock-breaking-assisted heading machine according to claim 5, characterized in that: the electrode cavity is provided with a water drainage hole; when the heading machine is heading, the water pipe injects flowing deionized water into the electrode cavity to prevent dust from entering the electrode cavity.
7. The mining high-voltage discharge rock-breaking-assisted heading machine according to claim 5, characterized in that: a high-voltage electric disc (12) communicated with the electrode cavity is arranged behind the cutter head of the heading machine; when the development machine develops, the water pipe sends deionized water to the high-voltage disk, so that the deionized water enters the electrode cavity; a high-voltage energy storage capacitor (10) connected with the rock breaking electrode group is arranged at the high-voltage electric disc; the high-voltage energy storage capacitor is formed by connecting a plurality of capacitors with low inductance in series; the high-voltage energy storage capacitor is connected with a transformer (13); the transformer is connected with a high-voltage pulse power supply (16) through a pulse transmission line (15).
8. The mining high-voltage discharge rock-breaking-assisted heading machine according to claim 1, characterized in that: the heading machine comprises a vehicle body (107) with a traveling part (101); the upper part of the front end of the vehicle body supports a cutter head (6) through a support rod, and a shovel plate part (109) connected with the vehicle body is arranged below the cutter head; a transport part (108) is arranged at the upper part of the rear end of the vehicle body;
when the heading machine is heading, a supporting part (11) at the rear part of the vehicle body is abutted against the ground to prevent the vehicle body from retreating.
9. The mining high-voltage discharge rock-breaking-assisted heading machine according to claim 1, characterized in that: the amplitude voltage of the rock breaking electrode group discharge of the cutter head is 30-50kV, and the single energy is 10-20J.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021933284.7U CN212428834U (en) | 2020-09-07 | 2020-09-07 | Mining high-voltage discharge auxiliary rock breaking development machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021933284.7U CN212428834U (en) | 2020-09-07 | 2020-09-07 | Mining high-voltage discharge auxiliary rock breaking development machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212428834U true CN212428834U (en) | 2021-01-29 |
Family
ID=74275123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021933284.7U Active CN212428834U (en) | 2020-09-07 | 2020-09-07 | Mining high-voltage discharge auxiliary rock breaking development machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212428834U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894620A (en) * | 2020-09-07 | 2020-11-06 | 福州大学 | High-voltage electric auxiliary rock-breaking roadway tunneling construction method |
| CN115653626A (en) * | 2022-12-15 | 2023-01-31 | 中国矿业大学(北京) | Plasma rock breaking equipment and tunnel construction method |
-
2020
- 2020-09-07 CN CN202021933284.7U patent/CN212428834U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894620A (en) * | 2020-09-07 | 2020-11-06 | 福州大学 | High-voltage electric auxiliary rock-breaking roadway tunneling construction method |
| CN115653626A (en) * | 2022-12-15 | 2023-01-31 | 中国矿业大学(北京) | Plasma rock breaking equipment and tunnel construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103883329B (en) | Mine hard rock excavation construction method | |
| WO2021103533A1 (en) | Operation-controllable, roof-cutting, pressure-relief, gob-side entry retaining method | |
| CN212428834U (en) | Mining high-voltage discharge auxiliary rock breaking development machine | |
| CN106499395A (en) | The quick-fried power scraper of shallow bore hole rock drilling cooperates with haulage Sublevel room mining | |
| CN109869150B (en) | Mine resource subsection full-mining local-charging mining method | |
| CN106677788A (en) | Mechanical excavation method for hard-rock tunnel with medium-short length | |
| CN102094668A (en) | High-pressure hydraulic drilling, pressure releasing and protrusion removing method for upper drainage roadway | |
| CN110656938B (en) | Subsequent filling mining method suitable for gently inclined medium-thickness broken ore body | |
| CN111677509B (en) | Cooperative mining method for inclined thick and large ore body | |
| CN110656939B (en) | Large-stage efficient mining method for steeply inclined medium-thickness ore body meeting water argillization surrounding rock | |
| CN112377241B (en) | Roof extraction roadway cross-layer drilling and presplitting blasting combined multi-branch directional hole extraction method | |
| CN112983418A (en) | Method for hydraulic fracturing pressure relief of coal mine underground coal face withdrawal channel | |
| CN101158287A (en) | Honey comb structure consolidated fill mining method | |
| CN109488316A (en) | High pressure pulse discharge-mechanically combining broken rock complete-section tunnel boring machine | |
| CN108457652A (en) | A kind of blockette segmentation full blast pressure shortwall even adopts placement method | |
| CN105370280B (en) | A kind of double-deck thin jade ore deposit nondestructive blasting mining methods of underground low-angle dip | |
| CN113389548B (en) | Method for coal mine stope face to rapidly pass through coal-free area | |
| CN105298493B (en) | Underground low-angle dip lamelliform jade ore deposit nondestructive blasting mining methods | |
| CN112177626B (en) | Method for tunneling roadway by electrode directional impact operation | |
| CN214424500U (en) | Full-face tunneling machine based on controllable shock wave auxiliary rock breaking | |
| CN110359910B (en) | Fully mechanized caving high-level filling mining method for thick coal seam strips under coal mine railway | |
| CN110259450B (en) | Mining method for inclined-steeply inclined medium-thickness ore body | |
| CN108708721B (en) | Mechanized upward segmented stoping method | |
| CN109630116B (en) | Mining method for inclined medium-thickness blind ore body | |
| CN111894620A (en) | High-voltage electric auxiliary rock-breaking roadway tunneling construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |