CN117823201A - Deep well high-ground-stress stoping roadway roof thick-layer anchoring supporting device and method - Google Patents
Deep well high-ground-stress stoping roadway roof thick-layer anchoring supporting device and method Download PDFInfo
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- CN117823201A CN117823201A CN202410048639.0A CN202410048639A CN117823201A CN 117823201 A CN117823201 A CN 117823201A CN 202410048639 A CN202410048639 A CN 202410048639A CN 117823201 A CN117823201 A CN 117823201A
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- 238000004873 anchoring Methods 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000008093 supporting effect Effects 0.000 title claims description 60
- 238000011084 recovery Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 125000003003 spiro group Chemical group 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 11
- 239000011435 rock Substances 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005065 mining Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the 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
-
- 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
- E21D21/008—Anchoring or tensioning means
-
- 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
- E21D21/0093—Accessories
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to the technical field of roadway roof support, and relates to a deep well high ground stress stoping roadway roof thick-layer anchoring support device and a deep well high ground stress stoping roadway roof thick-layer anchoring support method, wherein the deep well high ground stress stoping roadway roof thick-layer anchoring support device comprises the following steps: the rod body is sequentially provided with an anchoring section, a pre-tightening section and a connecting section; the anchoring section is used for anchoring with an anchor hole formed in the top of the roadway; the pre-tightening section is arranged on the top plate, one end of the pre-tightening section penetrates through the top plate and is in sliding fit with the anchoring section, wherein when the pre-tightening section moves along the direction away from the anchoring section, a support piece which is elastically connected with the anchoring section abuts against the inner wall of the anchor hole, and when the support piece abuts against the inner wall of the anchor hole, the pre-tightening section moves along the direction close to the anchoring section and abuts against the top plate; the connecting section is rotationally fixed relative to the pre-tightening section, a tensioner is arranged on the connecting section, and the tensioning end of the tensioner is connected with the connecting section and used for tensioning the connecting section along the direction away from the pre-tightening section. The invention can improve anchoring stability, effectively apply pre-tightening force to the top plate and improve bearing strength of deformation resistance of the top plate.
Description
Technical Field
The invention belongs to the technical field of roadway roof support, and particularly relates to a deep well high-ground-stress stoping roadway roof thick-layer anchoring support device and method.
Background
Along with the continuous extension of coal seam exploitation, the surrounding rock mass of the roadway is subjected to high ground stress and mining pressure, so that the deformation of surrounding rock of the roadway is large, roof collapse accidents are easy to occur, a deep high ground stress roadway roof is required to construct a thick-layer anchoring layer supporting structure, the requirement on the bearing strength of a supporting device is high, the supporting effect of a conventional anchor rod and anchor cable combination corresponding to the roadway is poor, and the anchor rod is of a rigid integrated structure, so that the anchor rod cannot construct a roof thick-layer anchoring bearing structure to realize effective supporting of the roof, meanwhile, the anchoring form and supporting structure of the existing anchor rod and anchor cable in surrounding rock enable the high ground stress and mining superposition stress effect to be easily released or broken, and the deep high ground stress stoping roadway roof is easy to deform.
Disclosure of Invention
The invention aims to provide a deep well high-ground stress recovery roadway roof thick-layer anchoring supporting device and method, so as to solve the problems, improve the anchoring thickness and the supporting structure stability of a roof, effectively apply pre-tightening acting force to the roof and improve the bearing strength of the roof in deformation resistance.
In order to achieve the above object, the present invention provides the following solutions: a deep well high ground stress stoping roadway roof thick-layer anchoring supporting device comprises:
the rod body is sequentially provided with an anchoring section, a pre-tightening section and a connecting section;
the anchoring section is used for anchoring with an anchor hole formed in the top of the roadway;
the pre-tightening section is arranged on the top plate, one end of the pre-tightening section penetrates through the top plate and is in sliding fit with the anchoring section, wherein when the pre-tightening section moves along the direction away from the anchoring section, a support piece which is elastically connected with the anchoring section abuts against the inner wall of the anchor hole, and when the support piece abuts against the inner wall of the anchor hole, the pre-tightening section moves along the direction close to the anchoring section and abuts against the top plate;
the connecting section is rotationally fixed relative to the pre-tightening section, a tensioner is arranged on the connecting section, and the tensioning end of the tensioner is connected with the connecting section and used for tensioning the connecting section along the direction away from the pre-tightening section.
Preferably, an empty groove is formed in one end, close to the anchoring section, of the pre-tightening section, a first thread is formed in the portion, located in the empty groove, of the anchoring section, the first thread is in threaded connection with the empty groove, a second thread is formed in the portion, away from the empty groove, of the anchoring section, and the second thread is used for anchoring with the anchor hole.
Preferably, the first thread and the second thread are in opposite thread directions.
Preferably, the inner wall of the bottom end of the empty slot is fixedly connected with one end of a fixing rod, a clamping slot is formed in the pre-tightening section, the other end of the fixing rod stretches into the clamping slot to be fixedly connected with a clamping block, the diameter of the fixing rod is smaller than that of the clamping block, and the clamping block is in sliding fit with the clamping slot.
Preferably, the axial direction of the port of the empty slot is fixedly connected with a limit sleeve, the diameter of the empty slot is smaller than that of the limit sleeve, a plurality of through holes are formed in the outer side wall of the limit sleeve, when the first thread is in threaded connection with the empty slot, the limit sleeve is propped against the supporting piece, and the limit sleeve is in sliding fit with the supporting piece.
Preferably, the support member includes:
the outer wall surface of the anchoring section is provided with a plurality of grooves at equal intervals in the circumferential direction, the number of the grooves is the same as that of the supporting rods, the supporting rods are in one-to-one correspondence, and the supporting rods are arranged in the grooves;
the elastic plate is arranged at the top end of the groove, one end of the elastic plate is fixedly connected with the pre-tightening section, the other end of the elastic plate is fixedly connected with the top end of the supporting rod, an included angle is formed between the elastic plate and the supporting rod, and the supporting rod extends out of the groove through the elastic plate.
Preferably, the pre-tightening section is fixedly connected with a nut, the diameter of the pre-tightening section is smaller than that of the nut, and the nut is used for propping against the top plate.
Preferably, the bottom end of the pre-tightening section is connected with a connecting seat through a rotating shaft, a rotating rod is arranged on the connecting seat in a penetrating mode, two ends of the rotating rod extend out of the connecting seat to be connected with a mounting seat in a connecting mode, and one end of the connecting section is welded on the mounting seat;
and the connecting section is provided with a third thread, and the tensioner is used for being connected with the third thread.
A deep well high ground stress stoping roadway roof thick-layer anchoring and supporting method is based on the deep well high ground stress stoping roadway roof thick-layer anchoring and supporting device and comprises the following steps:
the top of the roadway is provided with a plurality of anchor holes, and the anchor holes are equally divided into two groups and symmetrically distributed relative to the top plate;
a rod body is correspondingly arranged at each anchor hole position, and the anchoring section is anchored in the anchor hole;
penetrating the pre-tightening section through the top plate to enable the nut to be located on the bottom surface of the top plate, rotating the nut along the first thread direction to enable the limit sleeve to slide and enable the supporting rod to pop up;
rotating the nut to tightly prop the nut against the top plate;
and connecting the two connecting sections which are oppositely arranged with a tensioner respectively, so that the tensioner can maintain the force applied by stretching the two connecting sections along the mutual approaching direction, and the anchoring and supporting of the top plate are completed.
Preferably, when the nut is turned to tighten the nut against the top plate, the anchoring section is secured against the inner wall of the anchor hole by the abutment bar and then the nut is turned in a direction opposite to the first thread.
Compared with the prior art, the invention has the following advantages and technical effects:
according to the invention, the rod body is arranged on the roadway roof, the rod body is divided into the anchoring section, the pre-tightening section and the connecting section, the anchoring section stretches into an anchor hole formed in the roadway rock body in advance, the pre-tightening section is arranged on the roof, the pre-tightening section is in sliding fit with the anchoring section, when the pre-tightening section moves in the direction away from the anchoring section, a supporting piece arranged on the anchoring section pops up to abut against the inner wall of the anchor hole to improve the connection stability of the anchoring section, meanwhile, after the anchoring section is stably fixed with the roadway, the pre-tightening section moves to abut against the roof in the direction close to the anchoring section, under the premise that the anchoring section is fixed with the roadway, the pre-tightening section can generate pre-stress on the roof, so that the supporting strength of the roof is improved, meanwhile, the connecting section is arranged at the bottom end of the roof and is connected with a tensioner, and the tensioner can exert tensioning effect in any direction from the anchoring section and the pre-tightening section, and the tensioning effect is provided for the roof after the pre-tightening section abuts against, so that the purpose of improving the deformation resistance of the roof is achieved.
Drawings
For a clearer description of an embodiment of the invention or of the solutions of the prior art, the drawings that are needed in the embodiment will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:
FIG. 1 is a diagram showing the positional relationship between a rod and a top plate;
FIG. 2 is a structural cross-sectional view of the pretensioning section;
FIG. 3 is a cross-sectional view of the structure of the card slot;
FIG. 4 is a schematic view of the structure of the support rod and the elastic plate;
FIG. 5 is a schematic view of the structure of the nut;
wherein, 1, a rod body; 101. an anchor section; 102. a pre-tightening section; 103. a connection section; 2. a top plate; 3. a tensioner; 4. a hollow groove; 5. a fixed rod; 6. a clamping block; 7. a limit sleeve; 8. a supporting rod; 9. an elastic plate; 10. a nut; 11. a connecting seat; 12. a rotating shaft; 13. a rotating rod; 14. and (5) a mounting seat.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Examples: referring to fig. 1-5, a deep well high ground stress recovery roadway roof thick layer anchoring support device comprises:
the rod body 1, wherein an anchoring section 101, a pre-tightening section 102 and a connecting section 103 are sequentially formed on the rod body 1;
the anchoring section 101 is used for anchoring with an anchor hole formed in the top of a roadway;
the pre-tightening section 102 is arranged on the top plate 2, one end of the pre-tightening section 102 penetrates through the top plate 2 and is in sliding fit with the anchoring section 101, wherein when the pre-tightening section 102 moves along the direction away from the anchoring section 101, a support piece elastically connected to the anchoring section 101 abuts against the inner wall of the anchor hole, and when the support piece abuts against the inner wall of the anchor hole, the pre-tightening section 102 moves along the direction close to the anchoring section 101 and abuts against the top plate 2;
the connecting section 103 is rotatably fixed relative to the pre-tightening section 102, a tensioner 3 is arranged on the connecting section 103, and the tensioning end of the tensioner 3 is connected with the connecting section 103 and is used for tensioning the connecting section 103 along the direction away from the pre-tightening section 102.
According to the invention, the rod body 1 is arranged on the roadway roof 2, the rod body 1 is divided into the anchoring section 101, the pre-tightening section 102 and the connecting section 103, the anchoring section 101 stretches into an anchor hole formed in the roadway rock body in advance, the pre-tightening section 102 is arranged on the roof 2, the pre-tightening section 102 is in sliding fit with the anchoring section 101, when the pre-tightening section 102 moves in the direction far away from the anchoring section 101, a supporting piece arranged on the anchoring section 101 pops up to abut against the inner wall of the anchor hole to improve the connection stability of the anchoring section 101, meanwhile, after the anchoring section 101 is stably fixed with the roadway, the pre-tightening section 102 moves to abut against the roof 2 in the direction close to the anchoring section 101, on the premise that the anchoring section 101 is fixed with the roadway, the pre-tightening section 102 can generate pre-stress on the roof 2, meanwhile, the connecting section 103 is arranged at the bottom end of the roof 2 and is connected with the tensioner 3, and the tensioner 3 can exert tensioning effect in any direction, and can act on the anchoring section 101 and the pre-tightening section 102 to realize the purpose of resisting deformation of the roof 2.
In this technical scheme, tensioning ware 3 can adopt the extending structure such as hydro-cylinder, hydraulic piston rod according to actual need to can add a plurality of with body of rod 1, with a plurality of body of rod 1 symmetric distributions, be connected with the link 103 of two opposite positions respectively with the both ends of cylinder, hydraulic piston rod, when tensioning ware 3 acts on, the tensioning effect is produced to the mutual close of two bodies of rod 1, further reinforcing promotes the effect of roof 2 anti deformation strength.
Further, the pretension section 102 is provided with a hollow groove 4 near one end of the anchor section 101, a first thread is provided on a portion of the anchor section 101 located in the hollow groove 4, the first thread is in threaded connection with the hollow groove 4, a second thread is provided on a portion of the anchor section 101 away from the hollow groove 4, and the second thread is used for anchoring with an anchor hole.
Further, the first thread is in the opposite direction of the second thread.
Referring to fig. 2, by providing the hollow groove 4 on the pre-tightening section 102, the area provided with the first thread on the anchoring section 101 is in threaded connection with the hollow groove 4, while the second thread on the anchoring section 101 is anchored with the anchor hole, the anchoring section 101 is connected through grouting or glue injection after being stretched into the anchor hole, the connection friction force is improved through the second thread, the stability is enhanced, meanwhile, a worker can realize the sliding control of the pre-tightening section 102 and the anchoring section 101 by rotating the pre-tightening section 102 at the bottom end of the top plate 2, the practical operation is convenient, the use cost is saved compared with the driving structures such as an air cylinder, an oil cylinder and the like, and the device is convenient and widely arranged;
and the screw thread direction of first screw thread and second screw thread are opposite, avoid twisting anchor section 101 when rotating pretension section 102 for anchor section 101 and the joint strength of anchor eye reduces and influences the support intensity.
Further, the inner wall of the bottom end of the empty slot 4 is fixedly connected with one end of a fixing rod 5, a clamping slot is formed in the pre-tightening section 102, the other end of the fixing rod 5 stretches into the clamping slot to be fixedly connected with a clamping block 6, the diameter of the fixing rod 5 is smaller than that of the clamping block 6, and the clamping block 6 is in sliding fit with the clamping slot.
Through the dead lever 5 of dead lever 4 bottom rigid coupling in pretension section 102, utilize dead lever 5 fixed fixture block 6, stretch into the draw-in groove of seting up in the anchor section 101 with the one end of fixture block 6 in, with fixture block 6 only restrict in the draw-in groove slip control, be connected spacing with pretension section 102 and anchor section 101 through fixture block 6 and draw-in groove cooperation, the overall structure intensity of guarantee body of rod 1 when supporting the effect to prestressing force tensioning effect of roof 2.
Further, the axial fixedly connected with of the port of the empty groove 4 is provided with a limit sleeve 7, the diameter of the empty groove 4 is smaller than that of the limit sleeve 7, the outer side wall of the limit sleeve 7 is provided with a plurality of through holes, when the first thread is in threaded connection with the empty groove 4, the limit sleeve 7 abuts against the supporting piece, and the limit sleeve 7 is in sliding fit with the supporting piece.
The support piece is coated by the limit sleeve 7, so that the anchoring section 101 is conveniently stretched into the anchor hole to be anchored, the assembly efficiency is improved, and when the pre-tightening section 102 rotates along the first thread direction, the support piece can slide to stretch out of the limit sleeve 7, so that the support piece is stably supported against the inner wall of the anchor hole.
Further, the support member includes:
the outer wall surface of the anchoring section 101 is provided with a plurality of grooves at equal intervals in the circumferential direction, the number of the grooves is the same as that of the supporting rods 8, the supporting rods 8 are in one-to-one correspondence, and the supporting rods 8 are arranged in the grooves;
the elastic plate 9 is arranged at the top end of the groove, one end of the elastic plate 9 is fixedly connected with the pre-tightening section 102, the other end of the elastic plate 9 is fixedly connected with the top end of the supporting rod 8, an included angle is arranged between the elastic plate 9 and the supporting rod 8, and the supporting rod 8 extends out of the groove through the elastic plate 9.
The supporting rod 8 is fixedly connected in the groove by the elastic plate 9, an included angle is formed between the elastic plate 9 and the supporting rod 8, the supporting rod 8 keeps an elastic trend of extending out of the groove, the supporting rod 8 is fixed by the limiting sleeve 7, and when the pre-tightening section 102 is rotated, the limiting sleeve 7 is in sliding connection with the supporting rod 8, so that the supporting rod 8 pops out and props against the inner wall of the anchor hole, and the connection strength of the anchoring section 101 is improved.
Further, the pre-tightening section 102 is fixedly connected with a nut 10, the diameter of the pre-tightening section 102 is smaller than that of the nut 10, and the nut 10 is used for propping against the top plate 2.
Referring to fig. 1-3, by fixedly connecting the nut 10 on the pre-tightening section 102, setting the nut 10 on the bottom surface of the top plate 2, controlling the pre-tightening section 102 to rotate by rotating the nut 10, conveniently controlling the ejection of the abutment rod 8, and after the abutment rod 8 extends out, the nut 10 rotates in the opposite direction to enable the pre-tightening section 102 and the limit sleeve 7 to be close to the abutment rod 8 to lift, after the limit sleeve 7 abuts against the abutment rod 8, not only the supporting strength of the abutment rod 8 against the inner wall of the anchor hole is further improved, but also the nut 10 can abut against the ejector rod, under the premise that the anchoring section 101 is fixed, the nut 10 and the abutment rod 8 form clamping force relative to the top plate 2 and the roadway rock body, thereby realizing the pre-tightening action of the top plate 2, and effectively improving the connection stability of the rod body 1.
Further, the bottom end of the pre-tightening section 102 is connected with a connecting seat 11 through a rotating shaft 12, a rotating rod 13 is arranged on the connecting seat 11 in a penetrating manner, two ends of the rotating rod 13 extend out of the connecting seat 11 and are connected with a mounting seat 14 in a connecting manner, and one end of a connecting section 103 is welded on the mounting seat 14;
wherein, the connecting section 103 is provided with a third thread, and the tensioner 3 is used for being connected with the third thread.
By providing the third screw thread on the connecting section 103, the tensioner 3 is preferably but not limited to a rope tightener, a ratchet type tensioner, a chain tensioner and the like connected with the connecting section 103, the tensioner 3 with a threaded connection structure is adopted, one end of the tensioner 3 is screwed with the third screw thread, the other end of the tensioner is screwed with a fixed structure in a roadway, the tensioning and tightening of the connecting section 103 are realized by rotating the tensioner 3, and as can be understood, referring to fig. 1, by arranging a plurality of rod bodies 1 on the roadway roof 2, the rod bodies 1 are uniformly distributed in two groups and symmetrically arranged on two sides of the roof 2, the tensioner 3 is arranged between two opposite connecting sections 103, two ends of the tensioner 3 are respectively screwed with the third screw threads of the two connecting sections 103, so that the two rod bodies 1 interact to tighten the roof 2 and provide arch clamping force for the roof 2, the deformation resistance of the top of the roof 2 is fully improved,
a deep well high ground stress stoping roadway roof thick layer anchoring and supporting method based on a deep well high ground stress stoping roadway roof thick layer anchoring and supporting device comprises the following steps:
the top of the roadway is provided with a plurality of anchor holes, and the anchor holes are equally divided into two groups and symmetrically distributed relative to the top plate 2;
a rod body 1 is correspondingly arranged at each anchor hole position, and the anchoring section 101 is anchored in the anchor hole;
penetrating the pre-tightening section 102 through the top plate 2 to enable the nut 10 to be positioned on the bottom surface of the top plate 2, rotating the nut 10 along the first thread direction to enable the limit sleeve 7 to slide so as to eject the supporting rod 8;
rotating the nut 10 to tightly press the nut 10 against the top plate 2;
the two connecting sections 103 which are oppositely arranged are respectively connected with a tensioner 3, so that the tensioner 3 can maintain the force applied by tensioning the two connecting sections 103 along the mutual approaching direction, and the anchoring and supporting of the top plate 2 are completed.
Further, when the nut 10 is turned to tighten the nut 10 against the top plate 2, the anchor section 101 is fixed by the abutment rod 8 against the inner wall of the anchor hole, and then the nut 10 is turned in the opposite direction to the first screw.
Through setting up a plurality of with body of rod 1 to anchor eye and body of rod 1 one-to-one offer, stretch into anchor eye and fixed anchor segment 101, make limit sleeve 7 slide through rotating pretension section 102 and pop out the pole 8 that will support, then reverse rotation nut 10, when nut 10 offsets with roof 2, limit sleeve 7 and support pole 8 butt, make support pole 8 and anchor eye inner wall connection stable, rotate connecting seat 11 simultaneously through rotating mount pad 14, rotate two connecting sections 103 in the symmetry position along the direction of being close to each other and lie in same axis, with the both ends of tensioning ware 3 respectively with two third screw thread spiro union, thereby connecting section 103 carries out the tensioning effect, realize that two connecting sections 103 provide the deformation resistance application of force to roof 2, and produce prestressing force between roof 2 and the rock mass, reinforcing roof 2 supporting strength, in addition, still realized reinforcing anchor segment 101 connection stability's effect.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (10)
1. The utility model provides a deep well high ground stress stope roof thick layer anchor strutting arrangement which characterized in that includes:
the device comprises a rod body (1), wherein an anchoring section (101), a pre-tightening section (102) and a connecting section (103) are sequentially formed on the rod body (1);
the anchoring section (101) is used for anchoring with an anchor hole formed in the top of a roadway;
the pre-tightening section (102) is arranged on the top plate (2), one end of the pre-tightening section (102) penetrates through the top plate (2) to be in sliding fit with the anchoring section (101), wherein when the pre-tightening section (102) moves along the direction away from the anchoring section (101), a support piece which is elastically connected with the anchoring section (101) abuts against the inner wall of the anchor hole, and when the support piece abuts against the inner wall of the anchor hole, the pre-tightening section (102) moves along the direction close to the anchoring section (101) to abut against the top plate (2);
the connecting section (103) is rotatably fixed relative to the pre-tightening section (102), a tensioner (3) is arranged on the connecting section (103), and the tensioning end of the tensioner (3) is connected with the connecting section (103) and used for tensioning the connecting section (103) along the direction away from the pre-tightening section (102).
2. The deep well high ground stress recovery roadway roof thick-layer anchoring and supporting device according to claim 1, wherein the device comprises: the pre-tightening section (102) is close to one end of the anchoring section (101) and is provided with an empty groove (4), a first thread is arranged on the portion, located in the empty groove (4), of the anchoring section (101), the first thread is in threaded connection with the empty groove (4), a second thread is arranged on the portion, away from the empty groove (4), of the anchoring section (101), and the second thread is used for anchoring with the anchor hole.
3. The deep well high ground stress recovery roadway roof thick-layer anchoring and supporting device according to claim 2, wherein: the first thread is in an opposite thread direction to the second thread.
4. The deep well high ground stress recovery roadway roof thick-layer anchoring and supporting device according to claim 2, wherein: the clamping groove is formed in the pre-tightening section (102), a clamping block (6) is fixedly connected in the clamping groove, the diameter of the fixing rod (5) is smaller than that of the clamping block (6), and the clamping block (6) is in sliding fit with the clamping groove.
5. The deep well high ground stress recovery roadway roof thick-layer anchoring and supporting device according to claim 2, wherein: the utility model discloses a support piece, including support piece, spacing sleeve pipe (7) is fixed with in the axial of empty slot (4) port, just empty slot (4) diameter is less than spacing sleeve pipe (7) diameter, a plurality of through-holes have been seted up to spacing sleeve pipe (7) lateral wall, works as first screw thread spiro union is in empty slot (4), spacing sleeve pipe (7) with support piece offsets, spacing sleeve pipe (7) with support piece sliding fit.
6. The deep well high ground stress recovery roadway roof thick-layer anchoring support device of claim 1, wherein the support comprises:
the outer wall surface of the anchoring section (101) is provided with a plurality of grooves at equal intervals in the circumferential direction, the number of the grooves is the same as that of the supporting rods (8) and the grooves correspond to the number of the supporting rods (8) one by one, and the supporting rods (8) are arranged in the grooves;
elastic plate (9) set up the recess top, the one end of elastic plate (9) with pretension section (102) rigid coupling, the other end of elastic plate (9) with support pole (8) top rigid coupling, just elastic plate (9) with be provided with the contained angle between supporting pole (8), support pole (8) through elastic plate (9) stretch out the recess.
7. The deep well high ground stress recovery roadway roof thick-layer anchoring and supporting device according to claim 1, wherein the device comprises: the nut (10) is fixedly connected to the pre-tightening section (102), the diameter of the pre-tightening section (102) is smaller than that of the nut (10), and the nut (10) is used for propping against the top plate (2).
8. The deep well high ground stress recovery roadway roof thick-layer anchoring and supporting device according to claim 1, wherein the device comprises: the bottom end of the pre-tightening section (102) is connected with a connecting seat (11) in a switching way through a rotating shaft (12), a rotating rod (13) is arranged on the connecting seat (11) in a penetrating way, two ends of the rotating rod (13) extend out of the connecting seat (11) in a switching way, a mounting seat (14) is connected with one end of the connecting section (103) in a switching way, and one end of the connecting section (103) is welded on the mounting seat (14);
wherein, offer the third screw thread on connecting section (103), tensioning ware (3) are used for being connected with the third screw thread.
9. A deep well high ground stress stoping roadway roof thick layer anchoring and supporting method based on the deep well high ground stress stoping roadway roof thick layer anchoring and supporting device as claimed in any one of claims 1-8, characterized by comprising the following steps:
the top of the roadway is provided with a plurality of anchor holes, and the anchor holes are equally divided into two groups and symmetrically distributed relative to the top plate (2);
a rod body (1) is correspondingly arranged at each anchor hole position, and the anchoring section (101) is anchored in the anchor hole;
penetrating the pre-tightening section (102) through the top plate (2) to enable the nut (10) to be positioned on the bottom surface of the top plate (2), rotating the nut (10) along the first thread direction to enable the limit sleeve (7) to slide so as to eject the abutting rod (8);
rotating the nut (10) to enable the nut (10) to be abutted against the top plate (2);
and connecting the two oppositely arranged connecting sections (103) with a tensioner (3) respectively, so that the tensioner (3) keeps the force applied by stretching the two connecting sections (103) along the mutual approaching direction, and the anchoring support of the top plate (2) is completed.
10. The deep well high ground stress recovery roadway roof thick-layer anchoring and supporting method according to claim 9, wherein the method comprises the following steps: when the nut (10) is rotated to tightly press the nut (10) against the top plate (2), the anchoring section (101) is fixed by pressing the pressing rod (8) against the inner wall of the anchor hole, and then the nut (10) is rotated in the direction opposite to the first thread.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410048639.0A CN117823201A (en) | 2024-01-12 | 2024-01-12 | Deep well high-ground-stress stoping roadway roof thick-layer anchoring supporting device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410048639.0A CN117823201A (en) | 2024-01-12 | 2024-01-12 | Deep well high-ground-stress stoping roadway roof thick-layer anchoring supporting device and method |
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| Publication Number | Publication Date |
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| CN117823201A true CN117823201A (en) | 2024-04-05 |
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|---|---|---|---|
| CN202410048639.0A Pending CN117823201A (en) | 2024-01-12 | 2024-01-12 | Deep well high-ground-stress stoping roadway roof thick-layer anchoring supporting device and method |
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| Country | Link |
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| CN (1) | CN117823201A (en) |
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