CN113107524B - Supporting method for roadway specially used for treating rock burst and application - Google Patents
Supporting method for roadway specially used for treating rock burst and application Download PDFInfo
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- CN113107524B CN113107524B CN202110364821.3A CN202110364821A CN113107524B CN 113107524 B CN113107524 B CN 113107524B CN 202110364821 A CN202110364821 A CN 202110364821A CN 113107524 B CN113107524 B CN 113107524B
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- 239000011435 rock Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000009434 installation Methods 0.000 claims abstract description 13
- 239000003245 coal Substances 0.000 claims abstract description 12
- 238000004873 anchoring Methods 0.000 claims description 26
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 238000005553 drilling Methods 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 238000013316 zoning Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
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- 238000005755 formation reaction Methods 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/006—Lining anchored in the rock
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention belongs to the technical field of support, in particular to a support method and application of a roadway specially used for treating rock burst, which comprises a coal mine roadway, a support unit and an anchor cable net tensioning assembly, wherein the coal mine roadway comprises a roadway top and a roadway side, a support area and a lap area are preset on the side surface of the roadway side, a support eye is arranged on the support area, a lap anchor eye is arranged on the lap area, the support unit comprises an anchor cable net, a support anchor rod, a support gasket, a support nut, a lap anchor rod, a lap gasket and a lap nut, the anchor cable net tensioning assembly comprises a bottom plate, a horizontal sliding groove, a horizontal sliding block, a connecting plate, a telescopic inner screw rod, an outer screw cylinder, a vertical plate, a driving screw rod, a rotating rod, an installation rectangular groove, a vertical sliding groove, a servo motor, a vertical screw rod, a vertical sliding block, a lower lap joint rod, a through hole, an extension rod, a top block, an upper lap joint rod and a power supply box, and for the anchor cable net with longer length, and the single person can realize laying, so that the efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of support, and particularly relates to a support method for a roadway specially used for treating rock burst and application of the support method.
Background
Coal mines are reasonable spaces excavated by humans when excavating geological formations rich in coal and generally include roadways, wells, and mining surfaces, among others. Coal mine roadways are various passages drilled between the surface and the ore body for carrying ore, ventilation, drainage, pedestrian and various necessary preparation passages for mining ore for metallurgical equipment. Rocks in a natural state are classified into consolidated rocks, cohesive rocks, granular rocks, fluid rocks, and the like, according to the binding characteristics between solid mineral particles. The term "consolidated rock" refers to a rock in which solid particles of a rock-making mineral are rigidly connected to each other and which can retain a predetermined shape after being crushed. In the construction of coal mine tunnels, most of the rocks are consolidated rocks, and the consolidated rocks can be divided into hard rocks and soft rocks according to the mechanical strength and the firmness of the rocks. The soft rock has the characteristics of loose structure, small volume weight, large porosity, low strength, easy expansion when meeting water, obvious rheological property and the like. The soft rock area often causes great difficulty in the supporting work. With the development of the technology, coal mine roadway support goes through the processes of wood support, bricklaying support, steel frame shed support to anchor rod net cable support.
Disclosure of Invention
To soft rock tunnel, adopt the mode of shaped steel frame canopy support to strut, because shaped steel frame canopy support is a passive protection mode, the support is along with the emergence and the increase of deformation, the extrusion force that bears increases, the in-process of its effect carries out the process of lane wall deformation, can lead to the support to destroy finally, support inefficacy, stock net cable support is as a neotype means of supporting, belong to an initiative support mode, can prevent the deformation of tunnel lateral wall, at the in-process that the anchor rope net was laid, to the longer anchor rope net of length, need many people to tension anchor rope net both sides and operate, lay the efficiency low, and be not convenient for to the anchor rope net of eminence is laid. The invention provides a supporting method for a roadway specially used for treating rock burst and application thereof, and for an anchor cable net with longer length, a single person can lay the anchor cable net, so that the efficiency is improved.
The invention provides the following technical scheme:
the supporting method comprises a coal mine tunnel, a supporting unit and an anchor cable net tensioning assembly, wherein the coal mine tunnel comprises a tunnel top and a tunnel side, a supporting area and a lap area are preset on the side surface of the tunnel side, a supporting anchor eye is formed in the supporting area, a lap anchor eye is formed in the lap area, the supporting unit comprises an anchor cable net, a supporting anchor rod, a supporting gasket, a supporting nut, a lap anchor rod, a lap gasket and a lap nut, the anchor cable net is hung on the tunnel side, the supporting anchor rod is installed in the supporting anchor eye, the supporting gasket is sleeved on the side wall of the supporting anchor rod, the supporting nut is in threaded connection with the end portion of the supporting anchor rod, the lap anchor rod is installed in the lap anchor eye, the lap gasket is adjusted on the side wall of the lap anchor rod, the lap nut is in threaded connection with the end portion of the lap anchor rod, and the anchor cable net tensioning assembly comprises a bottom plate, The horizontal sliding grooves are arranged at the top end of the bottom plate, two groups of horizontal sliding blocks are symmetrically arranged in the horizontal sliding grooves in a sliding manner, the connecting plate is fixed at the center of the top end of the horizontal sliding block, the telescopic inner screw rod is fixed at the center of the side surface of the connecting plate, the outer screw cylinder is in threaded connection with the outer wall of the telescopic inner screw rod, the vertical plate is arranged at the side surface of the connecting plate, the driving screw rod penetrates through the connecting plate in a threaded manner, the rotating rod is fixed at the end part of the driving screw rod and penetrates through the vertical plate in a rotating manner, the mounting rectangular groove penetrates through the side surface of the vertical plate, and the vertical sliding groove is arranged on the central line of the side surface of the vertical plate, the servo motor is installed in the installation rectangular groove, vertical screw rod rotates to be connected at vertical spout both ends center, vertical slider slide in vertical spout and with vertical screw rod screw-thread fit, lap joint bar fixes in vertical slider side down, the through hole runs through vertical spout top setting, the extension rod runs through the through hole and fixes on vertical slider top, the kicking block is fixed on the extension rod top, go up the lap joint bar and fix in the kicking block side, the power supply box is installed on the bottom plate top.
The anchor cable net is formed by weaving steel wire ropes, the shape of the inner portion of each mesh hole is square, the side faces of the support gasket and the side faces of the lap joint gasket are both square, and the length of each support gasket is larger than that of each mesh hole of the anchor cable net.
The horizontal sliding groove is close to the vertical side face of the length direction of the bottom plate, the horizontal distance from two ends of the horizontal sliding groove to two sides of the bottom plate is the same, the connecting plate is a counterweight plate, and the top end of the horizontal sliding block is parallel to the top end of the horizontal sliding groove.
The two groups of telescopic inner screw rods are fixed in the centers of the opposite vertical side surfaces of the two groups of connecting plates, the length of each telescopic inner screw rod is greater than one fourth of the length of the horizontal sliding chute, and the length of the outer screw cylinder is equal to one half of the length of the horizontal sliding chute.
The riser is installed on the side that the connecting plate is close to the vertical side of bottom plate length direction, the length of drive screw is greater than the connecting plate and runs through ascending length of side at its drive screw, the position that drive screw runs through the connecting plate highly is close to the connecting plate top and sets up, dwang both ends and riser both sides parallel and level.
And, the horizontal plane that installation square tank bottom end was located and the horizontal plane parallel and level that the connecting plate top was located, servo motor spiro union is in installation square tank bottom, vertical spout bottom center rotates and runs through there is the connecting rod, connecting rod top and vertical screw rod bottom link to each other, servo motor's output shaft passes through the shaft coupling and the connecting rod tip links to each other.
The through holes are two groups and are symmetrically arranged, and the length of the extension rod is equal to the vertical distance from the bottom end of the vertical sliding groove to the top end of the vertical plate.
The power box is internally provided with a power supply for supplying power to the two groups of servo motors, and the two groups of servo motors work synchronously.
The outer cylinder lateral wall center is seted up and is held the groove, it arranges the antiskid groove on the groove table wall to hold.
A supporting method for a roadway specially used for treating rock burst and an application thereof comprise the following steps:
s1, zoning: determining an anchoring position on the side wall of the roadway side, partitioning a supporting surface upwards from the lower part of the side wall of the roadway side to form a supporting area, and simultaneously determining the position of a lap joint area;
s2, drilling a bolt hole: determining the position of a supporting anchor eye on a supporting area on the roadway side from the supporting area on the side wall of the lower portion of the roadway side, punching the supporting anchor eye by using a jumbolter, and cleaning;
s3, putting a support anchor rod: feeding an anchoring agent into a supporting anchorage hole of the supporting area, inserting the supporting anchorage into the supporting anchorage hole to enable the supporting anchorage to support the anchoring agent, and screwing the supporting anchorage by using an anchor rod drilling machine;
s4, hanging an anchor cable net: laying an anchor cable net from a support area on the side wall of the lower part of the roadway wall, enabling a support anchor rod to penetrate through meshes of the anchor cable net to fix the anchor cable net, and meanwhile, fixing the anchor cable net by utilizing a support gasket and a support nut;
s5, lap fixing: determining an anchoring position on the overlapping area, utilizing an anchor rod drilling machine to perform overlapping anchor eye punching, cleaning, feeding an anchoring agent into the overlapping anchor eye, inserting the overlapping anchor rod into the overlapping anchor eye to enable the overlapping anchor rod to prop against the anchoring agent, and utilizing the anchor rod drilling machine to screw the overlapping anchor rod;
s6, protection of adjacent support areas: repeating S2, S3, S4 and S5, operating adjacent supporting areas, enabling the lap joint anchor rods to penetrate through meshes of the anchor cable net, fixing the anchor cable net, and meanwhile fixing the anchor cable net by using lap joint gaskets and lap joint nuts;
s7, guniting protection: carrying out guniting protection on the anchor cable net in the S6 which is fixed in an overlapping way;
s8, protection of other supporting areas: and repeating the steps S6 and S7 to realize the integral support of the roadway side.
Compared with the prior art, the invention has the beneficial effects that: by arranging the anchor cable net tensioning assembly, rotating the outer screw barrel through the holding groove to drive two groups of telescopic inner screws to extend out, adjusting the distance between two groups of connecting plates under the matching of the horizontal sliding block and the horizontal sliding groove to enable the distance to be equal to the length of the anchor cable net, lapping meshes on two sides of the uppermost part of the anchor cable net to be laid with two groups of lower lapping rods, starting a servo motor to drive a vertical screw to rotate to drive a vertical slide block to move upwards so as to enable the anchor cable net to rise until the top end of the anchor cable net is flush with the top end of a supporting area, finally rotating the driving screw to push a vertical plate to approach the supporting area so as to enable the anchor cable net to be laid on the supporting area, when the roadway side is higher, when the lower lapping rods cannot meet the requirement of hanging the anchor cable net on the supporting area at a higher position, hanging and supporting of the anchor cable net at a higher position can be carried out by utilizing the upper lapping rods on the top blocks on the extension rods, and simultaneously hanging and supporting the anchor cable net in a multi-unit mode in different areas, construction is convenient, and the efficiency of anchor rope net whole laying is promoted.
The parts not involved in the apparatus/method are the same as or can be implemented using existing technology.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the arrangement of the supporting area of the present invention;
fig. 3 is a schematic view of an anchor cable net structure according to the present invention;
FIG. 4 is a schematic view of an anchor cable net overlapping structure according to the present invention;
FIG. 5 is a schematic view of a cable net tensioning assembly according to the present invention;
FIG. 6 is an enlarged view of part A of the present invention;
FIG. 7 is an enlarged view of the part B of the present invention.
In the figure: 1. performing roadway jacking; 2. lane walls; 3. a support area; 4. a lap zone; 5. supporting the anchor eye; 6. overlapping the anchor eye; 7. an anchor cable net; 8. supporting an anchor rod; 9. supporting a gasket; 10. supporting nuts; 11. overlapping the anchor rods; 12. overlapping gaskets; 13. a base plate; 14. a horizontal chute; 15. a horizontal slider; 16. a connecting plate; 17. a telescopic inner screw; 18. an outer barrel; 19. a vertical plate; 20. a drive screw; 21. rotating the rod; 22. mounting a rectangular groove; 23. a vertical chute; 24. a servo motor; 25. a vertical screw; 26. a vertical slide block; 27. a lower lap joint rod; 28. a through hole; 29. an extension rod; 30. a top block; 31. an upper lap joint rod; 32. a power supply box; 33. a holding groove; 34. an anti-slip groove; 35. and (4) overlapping the nuts.
Detailed Description
Referring to fig. 1-7, the present invention provides the following technical solutions:
a supporting method and application of a roadway special for treating rock burst comprise a coal mine roadway, a supporting unit and an anchor cable net tensioning assembly, wherein the coal mine roadway comprises a roadway roof (1) and a roadway side (2), a supporting area (3) and a lap area (4) are preset on the side surface of the roadway side (2), a supporting anchor eye (5) is arranged on the supporting area (3), a lap anchor eye (6) is arranged on the lap area (4), the supporting unit comprises an anchor cable net (7), a supporting anchor rod (8), a supporting gasket (9), a supporting nut (10), a lap anchor rod (11), a lap gasket (12) and a lap nut (35), the anchor cable net (7) is hung on the roadway side (2), the supporting anchor rod (8) is installed in the supporting anchor eye (5), the supporting gasket (9) is sleeved on the side wall of the anchor rod (8), and the supporting nut (10) is in threaded connection with the end part of the supporting anchor rod (8), the lap joint anchor rod (11) is arranged in the lap joint anchor eye (6), the lap joint gasket (12) is adjusted on the side wall of the lap joint anchor rod (11), and the lap joint nut (35) is in threaded connection with the end part of the lap joint anchor rod (11);
the anchor cable net tensioning assembly comprises a bottom plate (13), a horizontal sliding groove (14), a horizontal sliding block (15), a connecting plate (16), a telescopic inner screw (17), an outer screw cylinder (18), a vertical plate (19), a driving screw (20), a rotating rod (21), an installation rectangular groove (22), a vertical sliding groove (23), a servo motor (24), a vertical screw (25), a vertical sliding block (26), a lower lap joint rod (27), a through hole (28), an extension rod (29), a top block (30), an upper lap joint rod (31) and a power supply box (32);
the utility model discloses a horizontal sliding groove, including horizontal sliding groove (14), bottom plate (13) top is seted up to horizontal sliding groove (14), horizontal sliding block (15) are total two sets of and the symmetry slides and set up in horizontal sliding groove (14), connecting plate (16) are fixed at horizontal sliding block (15) top center, flexible interior screw rod (17) are fixed at connecting plate (16) side center, outer barrel (18) threaded connection is at flexible interior screw rod (17) outer wall, riser (19) are installed in connecting plate (16) side, driving screw rod (20) screw thread runs through connecting plate (16), dwang (21) are fixed at driving screw rod (20) tip and are rotated and run through riser (19), installation square groove (22) run through riser (19) side and set up, vertical spout (23) are seted up on riser (19) side central line, servo motor (24) are installed in installation square groove (22), vertical screw rod (25) rotate to be connected at vertical spout (23) both ends center, vertical slider (26) slide in vertical spout (23) and with vertical screw rod (25) screw-thread fit, overlap rod (27) are fixed in vertical slider (26) side down, through hole (28) run through vertical spout (23) top setting, extension rod (29) run through hole (28) and fix on vertical slider (26) top, ejector pad (30) are fixed on extension rod (29) top, it fixes in ejector pad (30) side to go up overlap rod (31), power supply box (32) are installed on bottom plate (13) top.
Anchor rope net (7) have wire rope to weave and form and the inside mesh internal form be the square, it is square and length is greater than the length of anchor rope net (7) mesh to strut gasket (9) and overlap joint gasket (12) side, when utilizing and strut gasket (9) and overlap joint gasket (12) to fasten anchor rope net (7), guarantee to strut gasket (9) and overlap joint gasket (12) and tightly touch the wire rope that covers on anchor rope net (7), under the cooperation of strutting stock (8) and overlap joint stock (11), realize that the overlap joint between anchor rope net (7) is fixed and with the fixed of group lane (2).
Horizontal chute (14) are close to the horizontal distance that bottom plate (13) a vertical side of length direction set up and both ends are the same to bottom plate (13) both sides, connecting plate (16) are the counterweight plate, horizontal slider (15) top and horizontal chute (14) top parallel and level for connecting plate (16) bottom and bottom plate (13) top contact, when horizontal slider (15) removal is followed in connecting plate (16), increase contact surface, and connecting plate (16) and riser (19) whole focus lean on down simultaneously, make riser (19) of following connecting plate (16) removal more stable.
Two sets of flexible inner screw rod (17) are fixed in the relative vertical side center of two sets of connecting plates (16), the length of flexible inner screw rod (17) is greater than the quarter of horizontal spout (14) length, the length of outer barrel (18) equals the half of horizontal spout (14) length, and when utilizing outer barrel (18) rotation drive flexible inner screw rod (17) to stretch out, when adjusting the distance between two sets of risers (19), ensure the length that can reach horizontal spout (14) the most, avoid simultaneously when the distance is transferred to the biggest, separate between outer barrel (18) and the flexible inner screw rod (17).
The vertical plate (19) is installed on the side face, close to the vertical side face in the length direction of the bottom plate (13), of the connecting plate (16), the length of the driving screw (20) is larger than the length of the connecting plate (16) in the penetrating direction of the driving screw (20), the position, where the driving screw (20) penetrates through the connecting plate (16), of the driving screw is close to the top end of the connecting plate (16), the two ends of the rotating rod (21) are flush with the two sides of the vertical plate (19), when the driving screw (20) is rotated, the length, extending out of the connecting plate (16), of the rotating rod is adjusted, and therefore the vertical plate (19) is pushed to be close to the roadway side (2).
The utility model discloses a servo motor, including installation rectangular groove (22), connecting plate (16), connecting rod top and servo motor (24), installation rectangular groove (22) bottom horizontal plane and connecting plate (16) top horizontal plane parallel and level are located, servo motor (24) spiro union is in installation rectangular groove (22) bottom, vertical spout (23) bottom center is rotated and is run through there is the connecting rod, connecting rod top and vertical screw rod (25) bottom link to each other, the output shaft of servo motor (24) passes through the shaft coupling and the connecting rod tip links to each other, the maintenance and the change of servo motor (24) of being convenient for.
Through hole (28) are total two sets of and the symmetry sets up, the length of extension rod (29) equals vertical chute (23) bottom to the perpendicular distance on riser (19) top, and when overlap joint pole (27) can't satisfy anchor rope net (7) on higher position strut area (3) and hang and establish down, can utilize last overlap joint pole (31) on kicking block (30) on extension rod (29), carry out hanging of anchor rope net (7) of eminence and establish.
The power box (32) is internally provided with a power supply for supplying power to the two groups of servo motors (24), and the two groups of servo motors (24) work synchronously.
The outer screw cylinder (18) is characterized in that a holding groove (33) is formed in the center of the side wall of the outer screw cylinder (18), and anti-slip grooves (34) are distributed in the surface wall of the holding groove (33), so that slipping can be effectively avoided when the outer screw cylinder (18) is rotated.
A supporting method for a roadway specially used for treating rock burst and application thereof also comprise the following steps:
s1, zoning: determining an anchoring position on the side wall of the roadway side (2), partitioning a supporting surface from the lower part of the side wall of the roadway side (2) upwards to form a supporting area (3), and determining the position of a lap joint area (4);
s2, drilling a bolt hole: determining the position of a supporting anchor eye (5) on a supporting area (3) on the roadway side (2) from the supporting area (3) on the side wall of the lower part of the roadway side (2), and punching and cleaning the supporting anchor eye (5) by using a jumbolter;
s3, putting a support anchor rod: feeding an anchoring agent into a supporting eye (5) of the supporting area (3), inserting a supporting anchor rod (8) into the supporting eye (5) to enable the supporting anchor rod to prop against the anchoring agent, and screwing the supporting anchor rod (8) by using a jumbolter;
s4, hanging an anchor cable net: laying an anchor cable net (7) from a supporting area (3) on the side wall of the lower part of the roadway side (2), enabling a supporting anchor rod (8) to penetrate through meshes of the anchor cable net (7) to fix the anchor cable net (7), and meanwhile, fixing the anchor cable net (7) by utilizing a supporting gasket (9) and a supporting nut (10);
s5, lap fixing: determining an anchoring position on the overlapping area (4), utilizing an anchor rod drilling machine to perform overlapping anchor eye (6) punching, cleaning, sending an anchoring agent into the overlapping anchor eye (6), inserting an overlapping anchor rod (11) into the overlapping anchor eye (6) to enable the overlapping anchor rod to prop against the anchoring agent, and utilizing the anchor rod drilling machine to screw the overlapping anchor rod (11);
s6, protection of adjacent support areas: repeating the steps of S2, S3, S4 and S5, operating the adjacent supporting areas (3), enabling the lap anchor rods (11) to penetrate through meshes of the anchor cable net (7), fixing the anchor cable net (7), and fixing the anchor cable net (7) by using the lap gaskets (12) and the lap nuts (35);
s7, guniting protection: carrying out guniting protection on the anchor cable net (7) in the S6 which is fixed in an overlapping way;
s8, protection of other supporting areas: and repeating the steps S6 and S7 to realize the integral support of the roadway side (2).
The working principle and the using process of the invention are as follows:
when the roadway sides (2) on two sides in the roadway are supported, firstly regionalization is carried out, a supporting surface is upwards divided from the lower parts of the side walls of the roadway sides (2) to form supporting areas (3), meanwhile, the positions of overlapping areas (4) are determined, an anchoring agent is fed into the supporting eyes (5) of the supporting areas (3) from the supporting areas (3) of the side walls on the lower parts of the roadway sides (2), supporting anchor rods (8) are inserted into the supporting eyes (5) to support the anchoring agent, supporting anchor rods (8) are drilled by a bolt drilling machine and cleaned, the anchor cable net (7) is screwed from the supporting areas (3) of the side walls on the lower parts of the roadway sides (2) to be paved, the supporting anchor rods (8) penetrate through meshes of the anchor cable net (7) to fix the anchor cable net (7), meanwhile, a support gasket (9) and a support nut (10) are utilized to fix an anchor cable net (7), then an anchoring position on the overlapping area (4) is determined, an anchor bolt drilling machine is utilized to drill the overlapping anchor eye (6) and clean the overlapping anchor eye (6), an anchoring agent is fed into the overlapping anchor eye (6), the overlapping anchor bolt (11) is inserted into the overlapping anchor eye (6) to prop against the anchoring agent, the overlapping anchor bolt (11) is screwed by the anchor bolt drilling machine, then the anchoring position on the overlapping area (4) is determined, the overlapping anchor eye (6) is drilled by the anchor bolt drilling machine and cleaned, the anchoring agent is fed into the overlapping anchor eye (6), the overlapping anchor bolt (11) is inserted into the overlapping anchor eye (6) to prop against the anchoring agent, the overlapping anchor bolt (11) is screwed by the anchor bolt drilling machine, finally the steps are repeated on the adjacent support areas (3), and the overlapping anchor bolt (11) passes through meshes of the anchor cable net (7), fixing the anchor cable net (7), fixing the anchor cable net (7) by using the lap joint gasket (12) and the lap joint nut (35), and carrying out guniting protection on the anchor cable net (7) which is fixed in a lap joint way to realize protection on the roadway side (2);
wherein the anchor cable net (7) is hung by a cable net tensioning assembly, an outer screw barrel (18) is rotated through a holding groove (33) to drive two groups of telescopic inner screws (17) to extend out, under the matching of a horizontal sliding block (15) and a horizontal sliding groove (14), the distance between two groups of connecting plates (16) is adjusted to be equal to the length of the anchor cable net (7), meshes on two sides of the upper part of the anchor cable net (7) to be laid are lapped with two groups of lower lapping rods (27), a servo motor (24) is started to drive a vertical screw (25) to rotate to drive a vertical sliding block (26) to move upwards, so that the anchor cable net (7) is lifted until the top end of the anchor cable net is flush with the top end of a supporting area (3), finally, a driving screw (20) is rotated to push a vertical plate (19) to approach the supporting area (3), so that the anchor cable net (7) is laid on the supporting area (3), and when the roadway is higher, the lower lapping rods (27) cannot meet the requirement of the anchor cable net (7) on the supporting area (3) at a higher position When in use, the anchor cable net (7) at a high position can be hung by utilizing the upper lap joint rod (31) on the top block (30) on the extension rod (29).
A supporting method for a roadway specially used for treating rock burst and application thereof can effectively protect the rock burst of a soft rock roadway and have wide application prospects.
Claims (4)
1. A supporting method of a roadway specially used for treating rock burst is characterized in that: the coal mine roadway comprises a roadway top and a roadway side, a supporting area and a lapping area are preset on the side face of the roadway side, supporting anchor eyes are formed in the supporting area, lapping anchor eyes are formed in the lapping area, the supporting unit comprises an anchor cable net, a supporting anchor rod, a supporting gasket, a supporting nut, a lapping anchor rod, a lapping gasket and a lapping nut, the anchor cable net is hung on the roadway side, the supporting anchor rod is installed in the supporting anchor eye, the supporting gasket is sleeved on the side wall of the supporting anchor rod, the supporting nut is in threaded connection with the end portion of the supporting anchor rod, the lapping anchor rod is installed in the lapping anchor eye, the lapping gasket is adjusted on the side wall of the lapping anchor rod, the lapping nut is in threaded connection with the end portion of the lapping anchor rod, and the anchor cable net tensioning assembly comprises a bottom plate, a horizontal sliding groove, a horizontal sliding block, a sliding block and a bolt, The device comprises a connecting plate, a telescopic inner screw rod, an outer screw cylinder, a vertical plate, a driving screw rod, a rotating rod, an installation rectangular groove, a vertical sliding groove, a servo motor, a vertical screw rod, a vertical sliding block, a lower overlapping rod, a through hole, an extension rod, a top block, an upper overlapping rod and a power box, wherein the horizontal sliding groove is formed in the top end of a bottom plate, the horizontal sliding blocks are symmetrically arranged in the horizontal sliding groove in two groups, the connecting plate is fixed at the top end center of the horizontal sliding block, the telescopic inner screw rod is fixed at the side center of the connecting plate, the outer screw cylinder is in threaded connection with the outer wall of the telescopic inner screw rod, the vertical plate is arranged on the side surface of the connecting plate, the driving screw rod is in threaded connection with the connecting plate, the rotating rod is fixed at the end part of the driving screw rod and rotates to penetrate through the vertical plate, the installation rectangular groove is arranged on the side surface of the vertical plate, the vertical sliding groove is formed on the central line of the side surface of the vertical plate, the servo motor is arranged in the installation rectangular groove, the vertical screw rod is rotatably connected to the centers of two ends of the vertical sliding groove, the vertical sliding block slides in the vertical sliding groove and is in threaded fit with the vertical screw rod, the lower lap joint rod is fixed on the side surface of the vertical sliding block, the through hole penetrates through the top end of the vertical sliding groove to be arranged, the extension rod penetrates through the through hole to be fixed on the top end of the vertical sliding block, the top block is fixed on the top end of the extension rod, the upper lap joint rod is fixed on the side surface of the top block, the power box is installed on the top end of the bottom plate, the anchor cable net is woven by steel wire ropes, the inner shape of a mesh hole in the anchor cable net is square, the side surfaces of the supporting gasket and the lap joint gasket are both square, the length of the supporting gasket and the length of the lap joint gasket are larger than that of the mesh hole of the anchor cable net, the horizontal sliding grooves are arranged close to the vertical side surface of the length direction of the bottom plate, the horizontal sliding block is parallel to the top end of the horizontal sliding groove, two groups of telescopic inner screw rods are fixed at the centers of the opposite vertical side surfaces of two groups of connecting plates, the length of each telescopic inner screw rod is greater than one fourth of the length of each horizontal sliding groove, the length of each outer screw cylinder is equal to one half of the length of each horizontal sliding groove, the vertical plates are installed on the side surfaces, close to the vertical side surfaces in the length direction of the bottom plate, of the connecting plates, the length of each driving screw rod is greater than the length of each connecting plate in the penetrating direction of the driving screw rod, the height of the driving screw rod penetrating through the connecting plates is close to the top end of each connecting plate, the two ends of each rotating rod are flush with the two sides of each vertical plate, the horizontal plane at the bottom end of each mounting square groove is flush with the horizontal plane at the top end of each connecting plate, the servo motor is screwed at the bottom end of each mounting square groove, a connecting rod penetrates through the center of the bottom end of each vertical sliding groove in a rotating manner, the top end of each connecting rod is connected with the bottom end of each vertical screw rod, and the output shaft of the servo motor is connected with the end of the connecting rod through a shaft coupler, the through holes are two groups and are symmetrically arranged, and the length of the extension rod is equal to the vertical distance from the bottom end of the vertical sliding groove to the top end of the vertical plate.
2. The supporting method of the roadway special for treating rock burst according to claim 1, characterized in that: the power box is internally provided with a power supply for supplying power to the two groups of servo motors, and the two groups of servo motors work synchronously.
3. The supporting method of the roadway special for treating rock burst according to claim 1, characterized in that: the outer cylinder lateral wall center is seted up and is held the groove, it arranges the antiskid groove on the groove table wall to hold.
4. The support method special for the roadway with the rock burst according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
s1, zoning: determining an anchoring position on the side wall of the roadway side, partitioning a supporting surface upwards from the lower part of the side wall of the roadway side to form a supporting area, and simultaneously determining the position of a lap joint area;
s2, drilling a bolt hole: determining the position of a supporting anchor eye on a supporting area on the roadway side from the supporting area on the side wall of the lower portion of the roadway side, punching the supporting anchor eye by using a jumbolter, and cleaning;
s3, putting a support anchor rod: feeding an anchoring agent into a supporting anchorage hole of the supporting area, inserting the supporting anchorage into the supporting anchorage hole to enable the supporting anchorage to support the anchoring agent, and screwing the supporting anchorage by using an anchor rod drilling machine;
s4, hanging an anchor cable net: laying an anchor cable net from a support area on the side wall of the lower part of the roadway wall, enabling a support anchor rod to penetrate through meshes of the anchor cable net to fix the anchor cable net, and meanwhile, fixing the anchor cable net by utilizing a support gasket and a support nut;
s5, lap fixing: determining an anchoring position on the overlapping area, utilizing an anchor rod drilling machine to perform overlapping anchor eye punching, cleaning, feeding an anchoring agent into the overlapping anchor eye, inserting the overlapping anchor rod into the overlapping anchor eye to enable the overlapping anchor rod to prop against the anchoring agent, and utilizing the anchor rod drilling machine to screw the overlapping anchor rod;
s6, protection of adjacent support areas: repeating S2, S3, S4 and S5, operating adjacent supporting areas, enabling the lap joint anchor rods to penetrate through meshes of the anchor cable net, fixing the anchor cable net, and meanwhile fixing the anchor cable net by using lap joint gaskets and lap joint nuts;
s7, guniting protection: carrying out guniting protection on the anchor cable net in the S6 which is fixed in an overlapping way;
s8, protection of other supporting areas: and repeating the steps S6 and S7 to realize the integral support of the roadway side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110364821.3A CN113107524B (en) | 2021-04-06 | 2021-04-06 | Supporting method for roadway specially used for treating rock burst and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110364821.3A CN113107524B (en) | 2021-04-06 | 2021-04-06 | Supporting method for roadway specially used for treating rock burst and application |
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| CN113107524A CN113107524A (en) | 2021-07-13 |
| CN113107524B true CN113107524B (en) | 2022-03-01 |
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| DE3817420A1 (en) * | 1988-05-21 | 1989-11-30 | Kloeckner Becorit Ind | Heading-face protection |
| CN105134264B (en) * | 2015-06-29 | 2018-04-10 | 上海大屯能源股份有限公司 | A kind of bolting and shotcreting with wire mesh construction technology |
| CN207667079U (en) * | 2017-12-18 | 2018-07-31 | 山西工商学院 | A kind of volleyball frame convenient for adjusting height and width |
| CN109114304A (en) * | 2018-10-10 | 2019-01-01 | 中山市爱科应用科技有限公司 | A kind of drainage pipe fitting, which quickly connects, uses top removal device |
| CN109595014B (en) * | 2018-11-06 | 2021-05-25 | 首钢集团有限公司 | Anchor net supporting method |
| CN111088990B (en) * | 2019-07-31 | 2022-06-07 | 太原理工大学 | Full-automatic anchor rod drill carriage for coal mine |
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