CN110805443A - Mining and remaining integrated coal mining method - Google Patents
Mining and remaining integrated coal mining method Download PDFInfo
- Publication number
- CN110805443A CN110805443A CN202010011929.XA CN202010011929A CN110805443A CN 110805443 A CN110805443 A CN 110805443A CN 202010011929 A CN202010011929 A CN 202010011929A CN 110805443 A CN110805443 A CN 110805443A
- Authority
- CN
- China
- Prior art keywords
- coal
- coal mining
- roadway
- cutting
- mining
- 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.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/20—General features of equipment for removal of chippings, e.g. for loading on conveyor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The disclosure provides a mining and remaining integrated coal mining method, and relates to the technical field of coal seam mining. The coal mining method comprises the following steps: cutting coal in a beveling mode according to the corresponding cutting distance of the coal mining machine, and conveying the cut coal body to a scraper conveyor; performing real-time support on the working face at one side of the coal mining machine far away from the coal wall of the working face, wherein the support at least comprises a roadway support and a waste rock blocking support; and when the coal mining machine runs to the preset boundary of the working face, cutting the arc-shaped profile of the entity coal side of the roadway through a roller of the coal mining machine so as to form the arc-shaped roadway side. The mining and retaining integrated coal mining method can retain a roadway in the coal mining process, avoid roadway digging in advance, reduce the coal mining cost and improve the coal mining efficiency.
Description
Technical Field
The disclosure relates to the technical field of coal seam mining, in particular to a mining and retaining integrated coal mining method.
Background
Coal is widely used as an energy source in the fields of electric power and industrial technology. With the development of economy, people have increasingly growing demands for coal resources, and efficient coal resource exploitation is particularly important.
In the traditional coal mining method, before the working face is mined, a tunnel needs to be tunneled firstly, then the working face is arranged for coal mining, the coal mining of the working face and the tunneling of a stoping tunnel are separated, so that the production continuation is easy to be tense, the tunneling tunnel engineering quantity is large, the tunneling time is long, the coal mining cost is high, and the coal mining efficiency is low.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a mining and retaining integrated coal mining method, which can reduce the coal mining cost and improve the coal mining efficiency.
According to one aspect of the disclosure, there is provided a mining and retention integrated coal mining method, comprising:
cutting coal in a beveling mode according to the corresponding cutting distance of the coal mining machine, and conveying the cut coal body to a scraper conveyor;
the method comprises the following steps that a working face is supported in real time on one side, far away from the coal wall of the working face, of the coal mining machine, wherein the support at least comprises a roadway support and a waste rock blocking support;
and when the coal mining machine runs to the preset boundary of the working face, cutting an arc-shaped profile of the entity coal side of the roadway through a roller of the coal mining machine so as to form an arc-shaped roadway side.
In an exemplary embodiment of the present disclosure, the performing the coal cutting in a beveling manner according to a corresponding cutting distance of the shearer, and conveying the cut coal body to the scraper conveyor includes:
cutting coal in a beveling mode according to the corresponding cutting distance of the coal mining machine, and enabling the coal mining machine to run to the straight line of the scraper conveyor;
the coal mining machine reversely cuts the triangular coal at the straight line until the triangular coal moves to the end part of the coal body;
turning the running direction of the coal mining machine to cut the coal wall of the working surface until the coal mining machine runs to the end part of the scraper conveyor;
conveying the cut coal bodies to the scraper conveyor so as to be carried out by the scraper conveyor.
In an exemplary embodiment of the present disclosure, the roadway support includes:
and drilling a plurality of anchor cable drill holes at a first preset position of the roadway top plate, wherein each anchor cable drill hole is used for installing an anchor cable.
In an exemplary embodiment of the present disclosure, the mine spoil support comprises:
connect the metal mesh in one side that the tunnel roof is close to the tunnel bottom plate, support scalable U shaped steel top in the lateral wall in tunnel, and its one end connect in the tunnel roof is close to the surface of tunnel bottom plate, the other end connect in the tunnel bottom plate is close to the surface of tunnel roof.
In an exemplary embodiment of the present disclosure, the coal mining method further includes:
and drilling a plurality of joint cutting drill holes arranged side by side at a second preset position of the roadway roof, and cutting joints of the roadway roof according to the arrangement direction of the joint cutting drill holes.
In an exemplary embodiment of the present disclosure, the coal mining method further includes:
and abutting the top beam of the top-cutting side-protecting support against the roadway top plate, and abutting the cross beam of the top-cutting side-protecting support against the telescopic U-shaped steel.
In an exemplary embodiment of the present disclosure, the coal mining method further includes:
and after the working face is pushed for a preset distance, removing the roof cutting protective support, and spraying a closed coating on the surface of one side of the roadway close to the goaf.
In an exemplary embodiment of the present disclosure, the thickness of the hermetic coating is 30mm to 50 mm.
In an exemplary embodiment of the present disclosure, the cutting distance is derived from a first formula:
D=2 L1+ L2
wherein D is the feed distance, L1Is the length of the body of the coal mining machine, L2Is the length of the curved section of the scraper conveyor.
In an exemplary embodiment of the present disclosure, the coal mining method further includes:
and carrying out machine following and frame moving in real time according to the running state of the coal mining machine.
According to the mining and retaining integrated coal mining method, a coal mining machine can replace tunneling equipment, so that parallel operation of coal mining and retained roadway is realized, a roadway is formed while coal mining is carried out, integration of coal mining and retained roadway is realized, the advance tunneling of the roadway is avoided, time is saved, and coal mining cost is reduced; the coal mining machine can also convey the coal mining charcoal to the scraper conveyor, and the coal mining charcoal can be completely conveyed out through the scraper conveyor. Meanwhile, in the excavation process, the roadway can be supported in real time so as to form a stable roadway side, and therefore coal mining and roadway retaining integration is realized; in addition, coal mining and roadway retaining can be carried out synchronously, processes are not affected mutually, time is saved, and coal mining efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a flowchart of a mining and retention integrated coal mining method according to an embodiment of the present disclosure.
Fig. 2 is a flowchart of step S110 in fig. 1.
Fig. 3 is a schematic diagram of mining and retention integrated coal mining operation according to the embodiment of the disclosure.
Fig. 4 is a schematic view of a roof cutting support according to an embodiment of the disclosure.
In the figure: 1. a gob; 2. the telescopic U-shaped steel; 3. cutting a top and protecting a side support; 4. cutting a suture line; 5. drilling an anchor cable; 6. and (6) cutting and drilling holes.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "the" and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. The terms "first" and "second" are used merely as labels, and are not limiting on the number of their objects.
The embodiment of the disclosure provides a mining and retention integrated coal mining method, as shown in fig. 1, the coal mining method may include:
step S110, performing inclined cutting to cut coal according to the corresponding cutting distance of the coal mining machine, and conveying the cut coal to a scraper conveyor;
step S120, performing real-time support on the working face on one side of the coal mining machine far away from the coal wall of the working face, wherein the support at least comprises a roadway support and a waste rock blocking support;
and S130, when the coal mining machine runs to a preset boundary of the working face, cutting an arc-shaped profile of the entity coal side of the roadway through a roller of the coal mining machine so as to form an arc-shaped roadway side.
According to the mining and retaining integrated coal mining method, a coal mining machine can replace tunneling equipment, so that parallel operation of coal mining and retained roadway is realized, a roadway is formed while coal mining is carried out, integration of coal mining and retained roadway is realized, the advance tunneling of the roadway is avoided, time is saved, and coal mining cost is reduced; the coal mining machine can also convey the coal mining charcoal to the scraper conveyor, and the coal mining charcoal can be completely conveyed out through the scraper conveyor. Meanwhile, in the excavation process, the roadway can be supported in real time so as to form a stable roadway side, and therefore coal mining and roadway retaining integration is realized; in addition, coal mining and roadway retaining can be carried out synchronously, processes are not affected mutually, time is saved, and coal mining efficiency is improved.
The following describes in detail each step of the mining and retention integrated coal mining method according to the embodiment of the present disclosure:
as shown in fig. 1, in step S110, coal is cut by performing a beveling operation according to a cutting distance corresponding to the shearer, and the cut coal is conveyed to the scraper conveyor.
The shearer may be a shearer loader, which may have a front drum and a rear drum, and the front drum and the rear drum may simultaneously cut coal during operation of the shearer, and both may convey the cut coal into the scraper conveyor for carrying out the coal by the scraper conveyor. Feed may refer to the process of entering the shearer's drum into the body of coal before each cut of coal. The roller can be directly pushed into the feed perpendicular to the coal body or obliquely cut into the feed at a preset angle with the surface of the coal body in the process that the roller enters the medium, and is not particularly limited. In one embodiment, the coal may be cut by obliquely cutting according to the corresponding cutting distance of the coal mining machine, and the cutting distances of different coal mining machines are different. The distance of feed may be derived from a first formula, which may be:
D=2 L1+ L2
wherein D may be the feed distance, L1Can be the length of the body of the coal mining machine L2May be the length of the curved section of the scraper conveyor.
In one embodiment, as shown in fig. 2, step S110 may include:
and step S1101, performing inclined cutting on the coal by using a corresponding cutting distance of the coal mining machine, and enabling the coal mining machine to run to a straight line of a scraper conveyor.
Can press close to the scraper conveyor and place the coal wall, and can divide into the three-section with the scraper conveyor as required, its first straightway, crooked section and the second straightway that can be connected gradually, wherein, crooked section can be the broken line part of connecting between first straightway and second straightway, and first straightway can be located the one side that the coal wall was kept away from to the broken line part, and the second straightway can be located one side that the broken line part is close to the coal wall. The length of the first straight section can be greater than or equal to the length of the body of the coal mining machine, the length of the bent section can be the minimum bendable length of the scraper conveyor, and the length of the second straight section can be the length of the scraper conveyor except for the length of the first straight section and the length of the bent section.
The distance between the first straight line segment and the coal wall can be equal to or slightly larger than the width of the coal mining machine, the coal mining machine can be arranged between the first straight line segment and the coal wall, the coal mining machine can run from the first straight line segment to the second straight line segment through the bent segment, a beveling feed mode can be adopted to cut coal when the coal mining machine enters the bent segment, the coal wall corresponding to the bent segment is made to be triangular coal, and the coal cutting is stopped when the coal mining machine runs to the second straight line segment.
And step S1102, the coal mining machine reversely cuts the triangular coal at the straight line until the triangular coal is moved to the end part of the coal body.
The coal cutter is used for reversely cutting coal at the positions of the front roller and the rear roller which are turned at the straight line and is mainly used for cutting triangular coal in a bent section and a coal body corresponding to the first straight line section. In the working process, a roller on the upper part of the coal mining machine cuts top coal and a roller on the lower part of the coal mining machine cuts bottom coal, and coal falls onto the scraper conveyor by using a helical blade of the roller of the coal mining machine and a coal blocking and collecting device at the tail of the machine so as to convey coal out in real time through the scraper conveyor. And the scraper conveyor can be pushed to slide in real time at a certain distance behind the coal mining machine while the coal mining machine mines coal, namely: the pushing and sliding process and the coal mining process of the coal mining machine are carried out simultaneously, the scraper conveyor can carry out pushing and sliding at a corresponding distance at a position lagging behind the coal mining machine by a certain distance every time the coal mining machine moves forward, and the coal missing from the coal mining machine can be loaded into the scraper conveyor by the coal shoveling plate and the float coal cleaning device at the tail of the coal mining machine in the pushing and sliding process, so that the coal body can be transported out by the scraper conveyor.
It should be noted that pushing and slipping can be carried out in the running process of the scraper conveyor, the bending section needs to be in uniform transition, and the pushing and slipping step pitch can be a coal cutting step pitch; the pushing and sliding can be in the same direction, namely the pushing and sliding can be carried out from the machine head to the machine tail or can be carried out from the machine tail to the machine head in sequence.
In one embodiment, the shearer cutting coal back at the position of the front and rear drums that are turned in line may include: the positions of a front roller and a rear roller of the coal mining machine are adjusted, so that the front roller descends, the rear roller ascends, bottom coal is cut by the front roller, top coal is cut by the rear roller until the first straight line section runs to the end part far away from the bending section, and coal bodies cut by the front roller and the rear roller can be conveyed to a scraper conveyor to be conveyed out.
And S1103, turning the running direction of the coal mining machine to cut the coal wall of the working face until the coal mining machine runs to the end part of the scraper conveyor.
When the coal mining machine runs to the end part of the coal body, the rear roller of the coal mining machine can be lowered, the front roller of the coal mining machine is raised, the running direction of the coal mining machine is transferred, the coal mining machine is enabled to run to the second straight line section and cut coal, the scraper conveyor can be pushed back for a certain distance and then pushed back sequentially, and the scraper conveyor is enabled to move into the coal wall until the coal mining machine runs to the end part of the scraper conveyor.
And step S1104, conveying the cut coal body to the scraper conveyor so as to be carried out by the scraper conveyor.
The scraper conveyor can be provided with an open chute which can be used for bearing coal bodies and can drive materials to move along the chute through the circulating operation of the scraper chain until the materials are unloaded at the head of the conveyor. The shearer can convey the cut coal into the chute of the scraper conveyor so as to convey the cut coal out through the chute.
As shown in fig. 1, in step S120, performing real-time support on the working surface on a side of the shearer away from the coal wall of the working surface, where the support at least includes a roadway support and a waste rock retaining support.
After the working face is mined, the roadway roof begins to collapse, and a certain time is required from collapse to stability, so that the area within a certain range from the working face needs to be subjected to permanent roof support and temporary reinforced support in sections. With the continuous propulsion of the working face, when the roadway is far away from the working face, the movement of the top plate basically tends to be stable, equipment for temporarily reinforcing the support can be removed, and only a gangue retaining support is reserved.
The waste rock retaining support can include that the metal mesh is connected to one side of the roadway top plate close to the roadway bottom plate, the telescopic U-shaped steel top is supported to the side wall of the roadway, one end of the telescopic U-shaped steel top is connected to the surface of the roadway top plate close to the roadway bottom plate, and the other end of the telescopic U-shaped steel top is connected to the surface of the roadway bottom plate close to the roadway top plate. For example, a waste rock blocking metal net can be laid close to a waste rock blocking plate along the vertical direction, the upper part of the metal net and the metal net on the top plate of the roadway can be bound and fixed by using iron wires, and the lower end of the metal net is laid on the bottom plate of the roadway; after the gangue blocking metal net is laid, the retractable U-shaped steel 2 can be erected tightly to the reinforcing mesh along the vertical direction, each group of retractable U-shaped steel 2 can be formed by stacking two U-shaped steel and is fastened by a matched clamping cable, and the upper end and the lower end of each group of retractable U-shaped steel 2 are in firm contact with the top bottom plate respectively.
Roadway support may include drilling a plurality of anchor cable bores at a first predetermined location of a roadway roof, and each anchor cable bore may be used to install an anchor cable. In addition, the roadway support can be operated in parallel with coal cutting of the coal mining machine, a special intelligent anchor cable drilling machine can be used for drilling, the first preset position can be aimed at through the translation and angle adjusting mechanism for drilling, anchor cable drilling holes can be formed, the anchor cable drilling holes can be used for installing anchor cables, and tensioning and pre-tightening operation can be carried out. As shown in fig. 3, the first preset position may be located at the top of the roadway, the number of anchor cable drill holes in the same section may be multiple, and the multiple anchor cable drill holes may be arranged side by side according to a preset interval, for example, the number of anchor cable drill holes may be 3, 4, 5, or 6, and of course, other numbers may also be used, which is not particularly limited herein.
The mining and remaining integrated coal mining method can further comprise roof directional joint cutting, for example, a plurality of joint cutting drill holes arranged side by side can be drilled at a second preset position of the roadway roof, and joint cutting is carried out on the roadway roof according to the arrangement direction of the joint cutting drill holes.
As shown in fig. 3 to 4, the second preset position may be located at a junction of the roadway roof and the gob 1, a plurality of slit holes arranged side by side may be drilled at the second preset position by a slit drilling machine, and two adjacent slit holes in the plurality of slit holes may be arranged at equal intervals. Directional cutting seams of the roadway roof can be cut according to the arrangement direction of the cutting seam drill holes 6, so that a stress transfer path of the roof is cut off, the roadway roof forms a roof cutting short-arm beam, and the influence of the stope pressure on the coal body on the side of the goaf 1 is reduced.
It should be noted that the real-time supporting can be performed simultaneously with the coal mining operation in terms of time, and each supporting process has a corresponding construction site and construction range, and the processes are not interfered with each other in terms of time and space and are performed synchronously, so that the coal mining time is further saved, and the coal mining efficiency is improved. In addition, the cutting and drilling can be carried out through the cutting and drilling machine at the position about 1500mm behind the first-column anchor cable support, meanwhile, the powder can be charged into the cutting and drilling hole in the range of 1 m-5 m behind the cutting and drilling machine, and after 5-10 holes are completed by the powder to be charged, one-time blasting is uniformly carried out, and the cutting and drilling work is completed.
As shown in fig. 1, in step S130, when the shearer runs to a preset boundary of the working face, an arc-shaped profile of a roadway solid coal slope is cut through the drums of the shearer, so as to form an arc-shaped roadway slope.
The preset boundary can be a boundary line preset at the end part of the scraper conveyor, when the coal mining machine runs to the boundary line, the arc-shaped outline of the entity coal side of the roadway can be cut through the roller, the arc radian can be set according to the width and the height of the roadway, and no special limitation is made here.
The mining and retention integrated coal mining method provided by the embodiment of the disclosure can further comprise:
and step S140, supporting the top beam of the top cutting side protection support against a roadway top plate, and supporting the cross beam of the top cutting side protection support against the telescopic U-shaped steel.
In the working face propelling process, the top-cut side wall protecting support 3 can be used for temporarily reinforcing support within 0 m-150 m behind the working face, the top-cut side wall protecting support 3 can be gradually withdrawn after the working face is 150m away from the working face according to actual conditions, at the moment, a coal pillar does not need to be reserved, and resource waste is avoided.
The top-cutting side wall protection support 3 can be provided with a top beam, the top beam top of the top beam can be supported against the top plate of the roadway, and the top gangue of the roadway is prevented from falling off.
The top cutting side wall protection supports 3 can be multiple, the top cutting side wall protection supports 3 can be transversely arranged side by side along a cutting line formed after the cutting drill 6 is blasted, the distance between every two adjacent top cutting side wall protection supports 3 can be 2.4m, and of course, other distances can be provided, which are not listed one by one.
The mining and retention integrated coal mining method provided by the embodiment of the disclosure can further comprise:
and S150, removing the roof cutting protective support after the working face is pushed for a preset distance, and spraying a sealing coating on the surface of one side of the roadway close to the goaf.
In order to prevent air leakage at the side of the goaf 1 of the roadway and harmful gas in the goaf 1 from overflowing into the roadway, a closed coating can be sprayed on the surface of one side of the roadway close to the goaf 1, so that the gangue blocking side of the roadway retaining section is closed, and the safety of personnel is ensured. The spraying can be performed once every 50m to 100m, and each spraying can be connected with the coating sprayed last time to ensure that the airtight coating completely covers the roadway surface, and the thickness of the airtight coating can be 30mm to 50mm, for example, 30mm, 35mm, 40mm, 45mm or 50mm, and of course, other thicknesses can be used, which are not listed any more.
The mining and retention integrated coal mining method provided by the embodiment of the disclosure can further comprise:
and S160, carrying out machine following and frame moving in real time according to the running state of the coal mining machine.
The drilling machine support can be moved in real time according to the operation state of the coal mining machine, so that the anchor cable drill hole 5 can be conveniently and timely drilled, and the anchor cable support can be carried out on the roadway. In the working process, the bracket can be moved firstly and then pushed to slide, and a cut-off distance exists between the bracket and the scraper conveyor after the pushing to slide. The quantity of support can be a plurality of, and move a plurality of supports after the frame and can distribute in line, a plurality of supports can equidistant even setting. When the support is moved, the supports can be moved forwards in sequence along the traction direction of the coal mining machine, and the moving step distance can be equal to the cutting depth.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A mining and retention integrated coal mining method is characterized by comprising the following steps:
cutting coal in a beveling mode according to the corresponding cutting distance of the coal mining machine, and conveying the cut coal body to a scraper conveyor;
the method comprises the following steps that a working face is supported in real time on one side, far away from the coal wall of the working face, of the coal mining machine, wherein the support at least comprises a roadway support and a waste rock blocking support;
and when the coal mining machine runs to the preset boundary of the working face, cutting an arc-shaped profile of the entity coal side of the roadway through a roller of the coal mining machine so as to form an arc-shaped roadway side.
2. The mining and retention integrated coal mining method according to claim 1, wherein the obliquely cutting coal feeding and cutting according to the corresponding cutting distance of the coal mining machine and conveying the cut coal body to the scraper conveyor comprises:
cutting coal in a beveling mode according to the corresponding cutting distance of the coal mining machine, and enabling the coal mining machine to run to the straight line of the scraper conveyor;
the coal mining machine reversely cuts the triangular coal at the straight line until the triangular coal moves to the end part of the coal body;
turning the running direction of the coal mining machine to cut the coal wall of the working surface until the coal mining machine runs to the end part of the scraper conveyor;
conveying the cut coal bodies to the scraper conveyor so as to be carried out by the scraper conveyor.
3. The mining-retention integrated coal mining method according to claim 1, wherein the roadway support comprises:
and drilling a plurality of anchor cable drill holes at a first preset position of the roadway top plate, wherein each anchor cable drill hole is used for installing an anchor cable.
4. The mining-retention integrated coal mining method according to claim 3, wherein the gangue stopping support comprises:
connect the metal mesh in one side that the tunnel roof is close to the tunnel bottom plate, support scalable U shaped steel top in the lateral wall in tunnel, and its one end connect in the tunnel roof is close to the surface of tunnel bottom plate, the other end connect in the tunnel bottom plate is close to the surface of tunnel roof.
5. The mining-retention integrated coal mining method according to claim 4, further comprising:
and drilling a plurality of joint cutting drill holes arranged side by side at a second preset position of the roadway roof, and cutting joints of the roadway roof according to the arrangement direction of the joint cutting drill holes.
6. The mining-retention integrated coal mining method according to claim 4, further comprising:
and abutting the top beam of the top-cutting side-protecting support against the roadway top plate, and abutting the cross beam of the top-cutting side-protecting support against the telescopic U-shaped steel.
7. The coal mining method of claim 6, further comprising:
and after the working face is pushed for a preset distance, removing the roof cutting protective support, and spraying a closed coating on the surface of one side of the roadway close to the goaf.
8. The mining and retention integrated coal mining method according to claim 7, wherein the thickness of the sealing coating is 30 mm-50 mm.
9. The mining-retention integrated coal mining method according to claim 1, wherein the feed distance is derived from a first formula:
D=2 L1+ L2
wherein D is the feed distance, L1Is the length of the body of the coal mining machine, L2Is the length of the curved section of the scraper conveyor.
10. The mining-retention integrated coal mining method according to claim 1, further comprising:
and carrying out machine following and frame moving in real time according to the running state of the coal mining machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010011929.XA CN110805443A (en) | 2020-01-07 | 2020-01-07 | Mining and remaining integrated coal mining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010011929.XA CN110805443A (en) | 2020-01-07 | 2020-01-07 | Mining and remaining integrated coal mining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110805443A true CN110805443A (en) | 2020-02-18 |
Family
ID=69493421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010011929.XA Pending CN110805443A (en) | 2020-01-07 | 2020-01-07 | Mining and remaining integrated coal mining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110805443A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5368369A (en) * | 1993-03-23 | 1994-11-29 | Council Of Scientific & Industrial Research | Equipment useful for winning ores particularly coal in longwall mining |
| CN105545304A (en) * | 2015-12-18 | 2016-05-04 | 重庆市合川区九峰煤炭有限公司 | Single coal cylinder coal cutter and operation method thereof |
| CN205445606U (en) * | 2015-12-18 | 2016-08-10 | 重庆市合川区九峰煤炭有限公司 | Single coal section of thick bamboo coal -winning machine |
| CN106050227A (en) * | 2016-06-16 | 2016-10-26 | 重庆大学 | Middle single-drum short machine body thin seam coal mining machine and mining method thereof |
| CN107725052A (en) * | 2017-10-31 | 2018-02-23 | 中国中煤能源集团有限公司 | One kind, which is adopted, stays integration exploitation gob side entry top plate constant-resistance anchor body beam method for protecting support |
-
2020
- 2020-01-07 CN CN202010011929.XA patent/CN110805443A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5368369A (en) * | 1993-03-23 | 1994-11-29 | Council Of Scientific & Industrial Research | Equipment useful for winning ores particularly coal in longwall mining |
| CN105545304A (en) * | 2015-12-18 | 2016-05-04 | 重庆市合川区九峰煤炭有限公司 | Single coal cylinder coal cutter and operation method thereof |
| CN205445606U (en) * | 2015-12-18 | 2016-08-10 | 重庆市合川区九峰煤炭有限公司 | Single coal section of thick bamboo coal -winning machine |
| CN106050227A (en) * | 2016-06-16 | 2016-10-26 | 重庆大学 | Middle single-drum short machine body thin seam coal mining machine and mining method thereof |
| CN107725052A (en) * | 2017-10-31 | 2018-02-23 | 中国中煤能源集团有限公司 | One kind, which is adopted, stays integration exploitation gob side entry top plate constant-resistance anchor body beam method for protecting support |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11008860B2 (en) | Equipment system for no-roadway no-coal-pillar retained roadway mining method | |
| CN102606152B (en) | Novel quick digging and anchoring integrated machine for rectangular coal roadway | |
| CN207004567U (en) | Tunnel is exploited with the coal mine filling that gob side entry retaining is combined | |
| CN104405437A (en) | Mining method employing solid filling and fully-mechanized coal mining hybrid working face | |
| CN109139012B (en) | Mining chain arm saw continuous top cutting and seam forming method | |
| AU2015281641A1 (en) | Method for removing hydraulic support for solid filling coal mining | |
| CN107387084A (en) | A kind of gob side entry retaining reduces the construction method for cutting top depth | |
| CN111927482B (en) | Special-shaped full-face tunneling machine capable of being used for hard rock stratum | |
| CN109252860B (en) | High-degree mechanical mining method for thin coal seam continuous mining machine | |
| CN112343617B (en) | Automatic mine roadway tunneling system | |
| CN109538224A (en) | A kind of novel coal lane high-speed driving machine | |
| CN104500070A (en) | Continuous coal mining machine paste filling mining method | |
| CN111379561B (en) | Coal mining system and pillar-free self-entry mining method based on same | |
| CN111119903B (en) | Method for gob-side entry driving of coal mine | |
| CN109763818A (en) | Repair machine in crawler type dress anchor one lane | |
| CN211648172U (en) | Ten-arm tunneling and tracing machine | |
| CN209494569U (en) | A kind of novel coal lane high-speed driving machine | |
| RU2325528C1 (en) | Method to control hard-caving roof | |
| CN111119896A (en) | Bauxite mining method | |
| CN110805443A (en) | Mining and remaining integrated coal mining method | |
| CN111828005B (en) | Face mining method | |
| CN111219191B (en) | Ultra-thin coal seam longwall mining method based on N00 construction method | |
| CN113622912B (en) | Outburst elimination technology for coal mining | |
| CN103982184A (en) | Falling ore directional slip control method adopting underground mine bottom-pillar-free caving mining method | |
| GB2224053A (en) | Mining method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200218 |