CN114718620A - 7 type tray and big inclination coal seam tunnel high group anchor in coordination protect structure - Google Patents
7 type tray and big inclination coal seam tunnel high group anchor in coordination protect structure Download PDFInfo
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- CN114718620A CN114718620A CN202111594060.7A CN202111594060A CN114718620A CN 114718620 A CN114718620 A CN 114718620A CN 202111594060 A CN202111594060 A CN 202111594060A CN 114718620 A CN114718620 A CN 114718620A
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- 239000003245 coal Substances 0.000 title claims abstract description 61
- 238000004873 anchoring Methods 0.000 claims abstract description 34
- 230000000903 blocking effect Effects 0.000 claims abstract description 12
- 239000011435 rock Substances 0.000 claims description 25
- 230000000149 penetrating effect Effects 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 239000003351 stiffener Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 125000006239 protecting group Chemical group 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate 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
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0086—Bearing plates
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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
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Geology (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention relates to a 7-type tray and a high slope collaborative anchoring structure of a high slope of a roadway of a high dip angle coal seam, belongs to the technical field of safety and stability control of the high slope of the roadway, and solves the problems that the control effect of the existing high slope coal seam roadway slope is poor and the high slope of the roadway is easy to collapse. The 7-type tray comprises a tray plate and a beam blocking plate, wherein the tray plate and the beam blocking plate are square plates, the tray plate is connected with the beam blocking plate, and an included angle between the tray plate and the beam blocking plate is the same as an included angle between a roadway top plate and a high upper of a high-inclination coal seam. The invention realizes the cooperative anchoring and protection of the side wall protecting beam and the supporting piece through the 7-type tray, thereby forming the cooperative control action of 'hardness and softness combined' and preventing the coal side from toppling or generating large deformation, thereby promoting the safe and efficient production of a coal mine.
Description
Technical Field
The invention relates to the technical field of safety and stability control of roadway high walls, in particular to a 7-type tray and high-slope cooperative anchoring structure of a roadway of a high-dip-angle coal seam.
Background
A considerable part of the coal reserves in China exist in the form of large-inclination-angle coal seams, and the inclination angles of the large-inclination-angle coal seams are between 30 and 60 degrees. When the coal seam inclination is too large, the included angle formed by the rock gravity direction and the rock bedding direction of the coal seam roadway is reduced, the acting force of the gravity along the bedding direction is increased, and the roadway is easy to be subjected to rib caving and large in deformation. Especially, when the high side is mainly coal, the coal is easy to collapse downwards along the inclination angle direction of the coal seam, thereby causing large deformation of the roadway and restricting the safe and efficient production of the coal mine.
Aiming at the control of the roadway side of the large-inclination coal seam, two modes of anchor rods, anchor nets and shed erection are mainly adopted at present. Because the high slope of the roadway is mainly a coal body and the inclination angle is large, the roadway can still generate large deformation and slope caving even if the anchor rod, the anchor net and the coal slope are collapsed together only by adopting the anchor rod and the anchor net for control. The control is carried out only by adopting a shed erecting mode, and large deformation can be generated, so that shed legs are crushed, and the support is invalid.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide a 7-type tray and a high slope collaborative anchoring structure for a large-dip angle coal seam roadway, so as to solve the problems that the existing high-dip angle coal seam roadway slope has poor control effect and the roadway high slope is easy to collapse.
The purpose of the invention is mainly realized by the following technical scheme:
the utility model provides a 7 type tray, includes tray board and fender beam board, tray board and fender beam board are square board, tray board and fender beam board are connected just contained angle between tray board and the fender beam board is the same with the contained angle of big inclination coal seam tunnel roof and high group.
The tray plate is characterized by further comprising a reinforcing rib plate, the reinforcing rib plate is a triangular plate, two sides of the triangle are respectively connected with the tray plate and the beam blocking plate, and the other side of the triangle is in an inwards concave arc shape.
Furthermore, the reinforcing rib plates are arranged in two parallel.
Furthermore, a first cable passing hole is formed in the middle of the tray plate, and the length direction of the first cable passing hole is parallel to the beam blocking plate.
Furthermore, a first rope through hole is formed in the beam blocking plate and is perpendicular to the beam blocking plate, and the two first rope through holes are formed in the outer sides of the two reinforcing rib plates respectively.
A high-slope collaborative anchoring structure of a large-dip-angle coal seam roadway comprises the 7-type tray in the technical scheme.
Further, the 7-type tray is connected with the first anchor cable through the first cable penetrating hole.
Further, the shoe frame also comprises a side wall protecting beam, and the 7-type tray is connected with the side wall protecting beam through the first rope threading hole.
The 7-type tray is characterized by further comprising a second anchor cable, wherein a second rope threading hole is formed in the bottom end of the 7-type tray, and the second anchor cable penetrates through the second rope threading hole and is installed on the upper portion.
The anchor rod is arranged on a rock mass side of the high side and is arranged on the same section with the side guard beam and the second anchor cable.
The invention can realize at least one of the following beneficial effects:
(1) the invention realizes the cooperative anchoring and protection of the side wall protecting beam and the supporting piece through the 7-type tray, thereby forming the cooperative control action of 'hardness and softness combined' and preventing the coal side from toppling or generating large deformation, thereby promoting the safe and efficient production of a coal mine.
(2) According to the cooperative anchoring and protecting structure, the first anchor cable and the side protecting beam 4 are utilized for cooperative anchoring and protecting, on one hand, deformation damage and side caving of soft coal bodies are limited through the side protecting beam 4 and the anchor net, on the other hand, the side protecting beam 4 is locked on a deeper stable rock mass through the first anchor cable and the 7-type tray, when the high-side coal bodies generate larger pressure on the side protecting beam 4, stress can be transferred to the deeper rock mass of a roadway top plate through the first anchor cable and the 7-type tray, cooperative bearing is achieved, accordingly, stability of the roadway high side is guaranteed, and construction is simple and convenient.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings, in which like reference numerals refer to like parts throughout, are for the purpose of illustrating particular embodiments only and are not to be considered limiting of the invention.
FIG. 1 is a schematic structural view of a 7-type pallet according to an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1 (without the tray plate);
FIG. 3 is a cross-sectional view of a roadway with a large inclination angle according to an embodiment of the present invention;
FIG. 4 is a structural diagram of the high-rise cooperative anchoring structure of the roadway of the large-dip-angle soft coal seam according to the embodiment of the invention;
FIG. 5 is a schematic structural view of an upper guard beam according to an embodiment of the present invention.
Reference numerals:
1-first anchor cable, 2-7 type tray, 201-tray plate, 202-beam blocking plate, 203-reinforcing rib plate, 204-first rope penetrating hole, 205-first rope penetrating hole, 3-anchor, 4-side wall protecting beam, 401-web, 402-second rope penetrating hole, 403-second rope penetrating hole, 404-third rope penetrating hole, 5-second anchor cable, 6-third anchor cable and 7-anchor rod.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection via an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative to the position of components of the device, such as the relative position of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.
Example 1
An embodiment of the invention, as shown in fig. 1 to 2, discloses a 7-type tray, which is used for a high-slope collaborative anchoring structure of a roadway of a high-dip angle coal seam, wherein the 7-type tray is used for fixing a supporting member located at the top plate closest to a high slope and simultaneously connecting a slope beam 4 of the high slope of the roadway, when a high-slope coal body generates a large pressure on the slope beam 4, the supporting member and the 7-type tray can transfer the stress to a deeper rock body of the top plate of the roadway to realize collaborative bearing, so that the stability of the high slope of the roadway is ensured.
In the embodiment, the 7-type tray is used for realizing the cooperative anchoring and protection of the side wall protecting beam and the supporting piece, so that the cooperative control action of 'rigidity and flexibility combined' is formed, the coal side is prevented from toppling or generating large deformation, and the safe and efficient production of a coal mine can be promoted.
In this embodiment, the supporting member is an anchor rod or an anchor cable.
Specifically, 7 type tray 2 is overall structure, including tray board 201, fender roof beam board 202 and deep floor 203, and tray board 201 and fender roof beam board 202 are square board, and tray board 201 and fender roof beam board 202 are connected and the contained angle between tray board 201 and the fender roof beam board 202 is the same with the contained angle of roof and high group for when 7 type tray 2 installed, tray board 201 and fender roof beam board 202 can be parallel with roof and high group respectively.
Further, the reinforcing rib plate 203 is a triangular plate, two sides of the triangle are respectively connected with the tray plate 201 and the stop beam plate 202, and the other side of the triangle is in an inward concave arc shape, so that the weight of the 7-type tray 2 is reduced while the reinforcing effect is not influenced.
In this embodiment, the 7-type tray 2 is provided with two reinforcing rib plates 203, and the two reinforcing rib plates 203 are parallel to each other.
Further, the specification of the tray plate 201 is a × b × a1(length × width × thickness, unit mm); the dimension of the breast board 202 is c x b x c1(length × width × thickness, unit mm); the web 203 has a thickness b2mm, distance between two webs is b3mm, two web plates are respectively spaced from the edge of the stop beam plate1mm。
Preferably, when the 7-type pallet 2 is used for fixing anchor cables, a, b, c, 300mm, a1＝20mm，c130 mm; when the 7-type pallet 2 is used for fixing anchor rods, a, b, c, 150mm, a1＝10mm，c1＝20mm。
Further, the middle position of the tray plate 201 is provided with a diameter R1The first reeving hole 204, and the length direction of the first reeving hole 204 is parallel to the stop beam plate 202.
Preferably, R when the 7-type pallet 2 is used for fixing anchor lines1(anchor cable diameter +10) mm; when the 7-type pallet 2 is used for fixing anchor rods, R1The diameter of the anchor rod is (diameter of the anchor rod +5) mm.
Further, the stop beam plate 202 is provided with a diameter R2The first rope threading hole 205, the first rope threading hole 205 is perpendicular to the stop beam plate 202. The two first rope threading holes 205 are respectively positioned at the outer sides of the two reinforcing rib plates 203.
Preferably, R2The diameter of the steel wire rope is multiplied by 2+10 mm, wherein the steel wire rope is used for connecting the 7-type pallet 2 and the side wall beam 4.
In this embodiment, the 7-tray is mounted on the brace of the top plate closest to the highwall, and the brace passes through the first reeving hole 204 and the anchor.
Further, the 7-type pallet 2 is installed parallel to the course of the roadway, that is, the beam blocking plate 202 is parallel to the course of the high wall of the roadway.
Further, when the anchor cables are adopted, the tensile force of the anchor cables is 160-200kN, so that enough extrusion force on the 7-type tray is ensured, and the stability of the 7-type tray is kept. If the anchor rod is adopted, the pretightening force of the anchor rod is 120 kN.
Example 2
One embodiment of the invention, as shown in fig. 3 to 5, discloses a high-upper cooperative anchoring structure of a roadway of a high-inclination coal seam, and uses the 7-type pallet of embodiment 1.
Specifically, anchor structure in coordination includes 7 type trays 2, first anchor rope 1 and protects group roof beam 4, and first anchor rope 1 is installed and is close to high group department at the roof, uses 7 type trays 2 anchors, protects group roof beam 4 along high group installation and with 7 type trays 2 locking, supports the high group coal body in tunnel.
The anchor in coordination of this embodiment protects the structure, utilize first anchor rope and protect group roof beam 4 to carry out anchor in coordination and protect, on the one hand through protecting group roof beam 4 and the deformation destruction and the piece group of the soft coal body of anchor net restriction, on the other hand will protect group roof beam 4 to lock in darker stable rock mass through first anchor rope and 7 type trays, when the high group coal body produces great pressure to protecting group roof beam 4, can shift stress to the darker rock mass of tunnel roof through first anchor rope and 7 type trays, realize bearing in coordination, thereby guarantee the stability of tunnel high group, and the construction is simple and convenient.
In this embodiment, the horizontal distance between the installation position of the first anchor cable 1 and the high wall is 80-120mm, and the drilling angle of the anchor eye for installing the first anchor cable 1 is 90 °, that is, the anchor eye is parallel to the high wall.
The eye depth of the anchor eye of the first anchor cable 1 is 3600-.
Further, the diameter of the drill hole of the first anchor cable 1 is matched with the diameter of the first anchor cable 1 and the diameter of the anchoring agent, namely the diameter of the drill hole of the first anchor cable is equal to the diameter of the anchoring agent + 4-6 mm, the diameter of the anchoring agent is equal to the diameter of the first anchor cable 1 + 3-5 mm, and other anchor cables and anchor rods are selected according to the mode.
Further, after the anchor cable hole is drilled, the anchoring agent is first filled, and then the first anchor cable 1 is installed using the 7-type tray 2 and the anchorage 3. When the 7-type tray 2 is installed, the tray plate 201 is flatly pressed on the top plate of the roadway, and the stop beam plate 202 is vertical.
In this embodiment, ground tackle 3 adopts spherical ground tackle, and the top surface of spherical ground tackle is arc, to the tray board 201 of different angles, can both guarantee that first anchor rope 1 keeps perpendicular to avoid producing the shearing force in first anchor rope 1, influence the anchor effect of first anchor rope 1.
Further, a spherical anchor is installed along the tray plate 201, and the first anchor cable 1 is inserted into the anchor cable eye after passing through the eye hole of the spherical anchor and the first cable passing hole 204.
Furthermore, the tensioning force of the first anchor cable 1 is 160-200kN, and the tensioning time of 30S needs to be kept after the rated pressure is reached.
After the first anchor cable 1 is installed, the side protecting beam 4 is installed to effectively support the high-side coal body of the roadway and prevent the coal body from caving and falling in the roadway.
In this embodiment, the height h of the side wall beam 43According to the softness condition of coal body h1And h2The size of (d) and the like. Preferably:
when h is less than 5000mm, h1H < 3000mm3H +200mm, and guarantee that rib roof beam 4 can insert the bottom plate 200mm, keep rib roof beam 4's stability.
When h is more than 5000mm, h1H < 3000mm3＝h1And +/-400-600 mm, the lower end of the side wall protecting beam 4 can be fixed on the rock mass side by using an anchor rod, and the overlapping length of the side wall protecting beam 4 and the rock mass side is not less than 400mm, so that the rock mass side is prevented from collapsing after being stressed.
When h is more than 5000mm, h1Greater than 3000mm and h2When more than 2000mm, h3＝h1And 500-700 mm, the lower end of the side wall protecting beam 4 can be fixed on the rock mass side by using an anchor rod, and the overlapping length of the side wall protecting beam 4 and the rock mass side is not less than 500mm, so that the rock mass side is prevented from collapsing after stress.
Further, the side wall protecting beam 4 is made of metal beams and columns, and the types of the metal beams and the columns are calculated and selected according to the thickness of the coal seam, stress distribution along the bedding direction and the like.
In this embodiment, the side wall protecting beam 4 is made of i-steel.
As shown in fig. 5, a second rope threading hole 402, one or more third rope threading holes 404 and a second rope threading hole 403 are arranged on a web 401 of the i-shaped steel from top to bottom.
Wherein, the distance between the second rope threading hole 402 and the upper end of the side wall beam 4 is 150 mm; the distance between the second rope penetrating hole 403 and the bottom end of the side wall protecting beam 4 is 200 mm; the number q of the third rope holes 4041S distance of1According to the softness degree of the coal body and the coal bodyHeight of upper1To determine, preferably, the quantity q1And a spacing s1Calculated and selected by the following formula:
q1＝ROUND(h11800) in root; wherein, ROUND refers to the pair (h)1The value of/1800) is rounded off according to the rule of rounding;
s1＝INT(h1/(q1+1)) in mm; wherein INT is p (h)1/(q1+1)) to remove decimal place and only take integer place;
exemplarily, when the height h of the coal body upper1When q is 2000mm11 anchor cable needs to be drilled and installed, and the distance is 1000 mm; when the height h of the coal body upper1When q is 3000mm, q 12 anchor cables need to be drilled and installed, and the distance between the anchor cables is 1000 mm; when the height h of the coal body upper1When the thickness is 5000mm, q 13 anchor cables need to be drilled and installed, and the distance is 1250 mm.
Further, the side wall protecting beam 4 is erected perpendicular to the direction of the roadway, and the web 401 is parallel to the direction of the roadway.
When the side wall protecting beam 4 is erected, the side wall protecting beam 4 and the 7-type tray 2 are bound through the second rope penetrating hole 402 at the end part of the side wall protecting beam 4 and the first rope penetrating hole 205 of the 7-type tray 2 by adopting materials such as steel wire ropes, and the side wall protecting beam 4 is prevented from falling.
Alternatively, one first rope threading hole 205 is provided, and the side wall beam 4 is connected with the 7-type pallet through a bolt.
In this embodiment, the high-wall cooperative anchoring structure further includes a second anchor cable 5, and the second anchor cable 5 fixes the wall-protecting beam 4 to the rock wall through the second cable-passing hole 403.
Further, the second anchor cable 5 is used for fixing the side wall protecting beam 4, and can perform an anchoring effect on the high side wall. Preferably, the length of the second anchor cable 5 is 5200mm, the eye depth is 5000mm, and the exposed length is 200 mm. The total length of the anchoring agent filled into the second anchor cable 5 is not less than 2000mm, and the second anchor cable 5 is smoothly installed by using the quick and medium-speed anchoring agent in a matching way.
In this embodiment, the high-wall cooperative anchoring structure further includes a third anchor cable 6, and the third anchor cable 6 fixes the wall-protecting beam 4 in the rock stratum of the coal seam floor through the third cable-passing hole 404.
Further, the third anchor cable 6 is used for fixing the side wall protecting beam 4 and anchoring the coal body, and can also play a role in anchoring the main body of the high side, particularly the coal body side. Preferably, the length of the third anchor cable 6 is equal to the length drilled in the coal body + the depth of the anchoring into the bottom plate rock body + the exposed length, wherein the depth of the anchoring into the bottom plate rock body is not less than 2000mm, and the exposed length is 200 mm. The total length of the anchoring agent filled into the third anchor cable 6 is not less than 2000mm, and the third anchor cable 6 is smoothly installed by using the quick and medium-speed anchoring agent in a matching way.
In the embodiment, an anchor rod 7 is further arranged, and the anchor rod 7 is installed on a rock body side of a high side and is arranged on the same section with the side protecting beam 4, the second anchor cable 5 and the third anchor cable 6.
Further, the number q of anchor rods 72S distance of2According to the height h of the rock mass side wall2To determine, preferably, the quantity q2S distance of2Calculated and selected by the following formula:
q2＝ROUND(h2/900) in units of roots;
s2＝INT(h2/(q2+1)) in mm.
In this embodiment, the stock 7 adopts the left-handed no longitudinal bar high strength stock that the afterbody is the filament thread, and the length of filament thread is 140 and 160mm, and the stock 7 adopts flat tray and nut to install.
Further, the number of anchor rods 7 needs to be determined by the height h of the rock mass side with high side2Determining rock mass structure and performance and the like.
Preferably, the length of the anchor rod 7 is 2400-2600 mm.
Further, the downward binding angle of the bottom angle anchor rod 7 positioned at the lowest end of the high upper is 30-45 degrees, the bottom angle anchor rod 7 is installed by a spherical anchorage device in a deviation manner.
Further, the pre-tightening force of the anchor rod 7 is 90-110kN, so that the anchor rod is cooperatively anchored with the anchor cable 5 and the anchor cable 6.
In summary, in the 7-type tray and high-inclination-angle coal seam roadway high-slope collaborative anchoring structure provided by the embodiment of the invention, collaborative anchoring of the slope protecting beam and the supporting member is realized through the 7-type tray, so that a 'rigid and flexible' collaborative control effect is formed, coal slopes are prevented from toppling or generating large deformation, and therefore, safe and efficient production of a coal mine can be promoted; utilize first anchor rope and protect group roof beam 4 to carry out anchor in coordination and protect, on the one hand through protecting group roof beam 4 and the deformation destruction and the rib of the soft coal body of anchor net restriction, on the other hand will protect group roof beam 4 to lock in darker stable rock mass through first anchor rope and 7 type trays, when the high group coal body produces great pressure to protecting group roof beam 4, can shift the stress to the darker rock mass of tunnel roof through first anchor rope and 7 type trays, realize bearing in coordination, thereby guarantee the stability of the high group of tunnel, and the construction is simple and convenient.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a 7 type tray, its characterized in that, includes tray board (201) and fender beam board (202), tray board (201) and fender beam board (202) are square board, tray board (201) and fender beam board (202) are connected just contained angle between tray board (201) and the fender beam board (202) is the same with the contained angle of big inclination coal seam tunnel roof and high group.
2. The type 7 pallet according to claim 1, further comprising reinforcing rib plates (203), wherein the reinforcing rib plates (203) are triangular plates, two sides of each triangle are respectively connected with the pallet plate (201) and the stop beam plate (202), and the other side of each triangle is in a concave arc shape.
3. Type 7 pallet according to claim 2, characterized in that the stiffeners (203) are provided in two pieces and parallel to each other.
4. Type 7 pallet according to any of the claims 1-3, characterized in that the pallet plate (201) is provided with a first reeving hole (204) in the middle position, the length direction of the first reeving hole (204) being parallel to the stop beam plate (202).
5. The 7-type tray according to claim 3, wherein a first rope penetrating hole (205) is formed in the beam blocking plate (202), the first rope penetrating hole (205) is perpendicular to the beam blocking plate (202), and two first rope penetrating holes (205) are formed and are respectively located on the outer sides of the two reinforcing rib plates (203).
6. A high-slope cooperative anchoring structure for a roadway of a high-dip angle coal seam, which is characterized by comprising a 7-type tray (2) as claimed in claims 1-5.
7. The high-slope cooperative anchoring structure of the roadway of the high-dip angle coal seam as claimed in claim 6, further comprising a first anchor cable (1), wherein the 7-type tray (2) is connected with the first anchor cable (1) through the first cable through hole (204).
8. The high-slope cooperative anchoring structure of the roadway of the high-inclination coal seam as claimed in claim 6, further comprising a side wall beam (4), wherein the 7-type tray (2) is connected with the side wall beam (4) through the first rope penetrating hole (205).
9. The high-rise cooperative anchoring structure of the high-inclination-angle coal seam roadway is characterized by further comprising a second anchor rope (5), wherein a second rope penetrating hole (402) is formed in the bottom end of the 7-type tray (2), and the second anchor rope (5) is installed on the high rise through the second rope penetrating hole (402).
10. The high-slope cooperative anchoring structure of the high-dip-angle coal seam roadway according to claim 9, further comprising anchor rods (7), wherein the anchor rods (7) are installed on the rock mass slope of the high slope and are arranged on the same section with the side wall protecting beams (4) and the second anchor cables (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111594060.7A CN114718620B (en) | 2021-12-23 | 2021-12-23 | 7 tray and high group cooperative anchor structure of high-inclination coal seam tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111594060.7A CN114718620B (en) | 2021-12-23 | 2021-12-23 | 7 tray and high group cooperative anchor structure of high-inclination coal seam tunnel |
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| CN114718620A true CN114718620A (en) | 2022-07-08 |
| CN114718620B CN114718620B (en) | 2023-07-04 |
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| CN107939426A (en) * | 2018-01-15 | 2018-04-20 | 河南理工大学 | A kind of three hole fillet pallets and application method for the anchoring of trapezoidal roadway bolt |
| CN210948737U (en) * | 2019-11-15 | 2020-07-07 | 四川达竹煤电(集团)有限责任公司柏林煤矿 | Efficient and rapid tunneling roadway support facility for inclined small-section half-coal-rock roadway with thin coal seam |
| CN211819433U (en) * | 2019-11-15 | 2020-10-30 | 湖南科技大学 | Supporting device for coal mine roadway shoulder angle |
| US20210087931A1 (en) * | 2020-10-15 | 2021-03-25 | Shandong University Of Science And Technology | Grouting bolt-cable composite beam and supporting method for advanced support of fractured surrounding rock in deep coal mines |
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| CN114718620B (en) | 2023-07-04 |
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