CN113374498B - High rock burst roadway support system based on underground soft rock replacement technology - Google Patents
High rock burst roadway support system based on underground soft rock replacement technology Download PDFInfo
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- CN113374498B CN113374498B CN202110817016.1A CN202110817016A CN113374498B CN 113374498 B CN113374498 B CN 113374498B CN 202110817016 A CN202110817016 A CN 202110817016A CN 113374498 B CN113374498 B CN 113374498B
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- 239000011435 rock Substances 0.000 title claims abstract description 124
- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- 230000008093 supporting effect Effects 0.000 claims abstract description 49
- 230000000670 limiting effect Effects 0.000 claims abstract description 36
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000002441 reversible effect Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000007569 slipcasting Methods 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 36
- 239000004567 concrete Substances 0.000 description 5
- 239000011378 shotcrete Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000036961 partial effect Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 238000000518 rheometry Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910052900 illite Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000013598 vector Substances 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
- 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
-
- 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
-
- 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
- E21D11/14—Lining predominantly with metal
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Landscapes
- 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)
- Sewage (AREA)
Abstract
The invention relates to a high rock burst roadway support system based on an underground soft rock replacement technology, which comprises a roadway, wherein a first support layer is arranged on the side surface of the roadway, a bottom plate is arranged at the lower end of the first support layer, a plurality of groups of slots are formed in the lower surface of the bottom plate, a plurality of groups of vertical plates are fixed on the lower surface of the bottom plate, limiting rods are fixed above the opposite surfaces of the plurality of groups of vertical plates, limiting grooves are formed in the two sides of the upper surface of the limiting rods, limiting blocks are fixed above the opposite surfaces of the plurality of groups of vertical plates, a plurality of groups of baffle plates are arranged on the lower surface of the bottom plate, a plurality of groups of baffle plates are arranged between the plurality of groups of vertical plates, and sliding rods are fixed on the two sides of the side surfaces of the baffle plates. The invention has the beneficial effects that: utilize the baffle to cut apart the rock mass that flows to flowing, can make the constructor clear away the rock mass that flows fast convenient, accomplish construction safety convenient, and after clear away, can reset the baffle, avoided the destruction to first supporting layer, guaranteed supporting construction's completion.
Description
Technical Field
The invention relates to a high rock burst roadway support system based on an underground soft rock replacement technology, and belongs to the technical field of underground roadway engineering support equipment.
Background
In the high-stress structure complex region of the deep mine, the extremely soft rock and the expanded rock mass of the superficial part in the surrounding rock of the roadway are replaced, particularly, the extremely soft rock and the expanded rock of the bottom corner and the bottom plate and the rock mass which loosens and becomes rheological under the action of external force are partially removed, the sprayed concrete is used for replacing part of the rock which is extremely easy to expand, such as kaolin, montmorillonite, illite and the like, and the expansion pressure brought by the superficial part and the initial stage of the expanded rock can be greatly relieved. And a part of extremely soft rock, namely the argillaceous cementing compound, the rock with low tissue maturity and low structural maturity is replaced, so that the anchor rod combination and grouting solidification of surrounding rock are facilitated. The two bottom corners of the roadway are the junction points of stress transmission, the sensitive areas generating the sharp angle effect and the foothold points of the roadway support surrounding rock vectors. Therefore, when a roadway is excavated, soft rock bodies at the bottom corners are deeply excavated, concrete is sprayed to the foundation pits at the bottom corners for replacement, namely, the unstable soft rock in the foundation pits is replaced by the concrete, so that the foundation pits become a strong foundation for supporting, and the supporting effect is improved.
When clearing up the rock mass of becoming flexible and rheological of base angle, need to implement the roadway support for the first time in advance for guarantee constructor's operation safety, before the construction, nevertheless need destroy the support of lower extreme, lead to the construction to have certain potential safety hazard, in the in-process of construction moreover, lead to easily becoming flexible or the rock mass top of rheological lacks the support, arouses to a certain extent and drops, influence constructor's life health safety.
Disclosure of Invention
The invention aims to provide a high rock burst roadway support system based on an underground soft rock replacement technology, which can effectively solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a high rock burst roadway support system based on soft rock replacement technique in pit, includes the roadway, the side-mounting of roadway has first supporting layer, the bottom plate is installed to the lower extreme of first supporting layer, a plurality of groups slots have been seted up to the lower surface of bottom plate, the lower surface mounting of bottom plate has a plurality of sets of riser, and the top of the opposite face of a plurality of sets of riser is fixed with the limit pole, limit groove has been seted up to the both sides of the upper surface of limit pole, and the opposite face top of a plurality of sets of riser is fixed with the limit piece, the lower surface of bottom plate is provided with a plurality of groups of baffles, and the baffle is in the in-process of using, inserts the baffle to the top of the rock mass of becoming flexible and rheological rock mass, utilizes the baffle to laminate, and supports the upper end, is convenient for clear away not hard up and rheological rock mass, and protects constructor, a plurality of sets of the baffle all is provided with between a plurality of sets of riser, the both sides of baffle side are fixed with the litter, the litter corresponds with the limit groove, the side of baffle has seted up the limit groove, limit the limit piece is located the limit groove on the limit pole, limit groove is convenient for install the baffle on the limit groove.
Further, the cavity has been seted up to the inside of baffle, one side of cavity inside is fixed with a plurality of groups of first bearing frames, is provided with first bearing frame in the cavity bottom, the inside of first bearing frame is fixed with the dead lever, the gangbar is installed to the one end of dead lever, the both ends of gangbar are fixed with the connecting plate, the connecting plate inserts the one end of dead lever, and rotates with the dead lever to be connected, when dragging the gangbar, the one end and the dead lever rotation of gangbar are connected for the dead lever can avoid producing the removal along with the upset of gangbar, is convenient for the fixed of dead lever and first bearing frame.
Further, the movable rod is installed to the other end of gangbar, the one end of movable rod is fixed with the drill bit, the drill bit is located the slot, the movable rod inserts in the second bearing frame, and both fixed connection, a plurality of groups the one end of gangbar opposite face all is fixed with the connecting rod.
Further, the side of second bearing is fixed with the connecting piece, the side-mounting of connecting piece has the piece of rotating, the side of rotating is fixed with the spring, the other end of spring is fixed in the inside of fixed block, the dead slot has been seted up in the fixed block, the fixed block is fixed on the inner wall of baffle, when pulling the gangbar for the one end of movable rod moves along with the upset of gangbar, at the in-process of removal, the second bearing seat separates with the fixed block under the effect of spring to be convenient for the drill bit leave the slot, make the baffle can insert the top of prescribing a limit to the pole.
Further, a plurality of groups the belt has been cup jointed between the dead lever, and a plurality of groups set up flutedly on the dead lever, and set up the belt in the recess, the driving medium is installed to the center department of belt, utilizes the rotation of driving medium, drives the rotation of belt to make the dead lever rotate, at pivoted in-process, promote the baffle to the rock mass inside, make the removal of baffle more convenient.
Further, both sides and the belt in close contact of driving medium, the recess is seted up on the surface of driving medium, and the belt sets up in the recess, the through-hole has been seted up on the driving medium, and the draw-in groove has been seted up to the side of driving medium, the draw-in groove sets up the edge at the through-hole.
Further, the dwang has been installed to the inside of driving medium, the one end of dwang side is fixed with the fixture block, the fixture block is corresponding with the draw-in groove, the one end of dwang is fixed with the connecting block, the jack has been seted up on the connecting block, through pulling the dwang for the fixture block of dwang one end is embedded into the inside of draw-in groove, inserts the jack with the steel pipe in, makes the driving medium rotate through rotating the steel pipe, thereby makes the driving medium drive the belt and carries out the transmission, can drive the dead lever then, the promotion of the baffle of being convenient for.
Further, the second supporting layer is installed on the side face of the first supporting layer, the third supporting layer is installed on the side face of the second supporting layer, the ground supporting layers are arranged on the two sides of the lower end of the roadway, the grouting anchor rod is installed on the side face of the roadway, and the grouting anchor rod is fixed on the side face of the third supporting layer.
Further, the backup pad is installed to the side of baffle, the spout has been seted up in the both sides of backup pad in the baffle hugging closely, the one end of backup pad both sides face is fixed with the installed part, install the rotor plate on the installed part.
Furthermore, the application method of the high rock burst roadway support system based on the underground soft rock replacement technology provided by the invention comprises the following specific steps:
step one: after the first supporting layer is installed by the construction team, a bottom plate is installed at the lower end of the first supporting layer, a vertical plate is installed on the lower surface of the bottom plate for supporting, a sliding rod on the side surface of the baffle corresponds to the limiting groove, and the linkage rod pulls the movable rod through pulling the connecting rod, so that the drill bit is positioned in the cavity;
step two: in the process of installing the baffle, as the two ends of the side surface of the baffle are provided with the through holes, the through holes are correspondingly installed to the limiting blocks, so that the limiting blocks enter the vertical grooves, at the moment, the limiting blocks pass through the vertical grooves at the two ends of the side surface of the baffle, at the moment, the connecting rods are reset, so that the drill bit is positioned in the slot, and the baffle is fixed at the fixed door plate;
step three: when the loose and rheological rock mass of the bottom corner is cleared, the door plate is opened, the connecting rod is pulled, the baffle is rotated to the upper side of the limiting rod, the connecting rod is reset again, the door plate is fixed, the baffle moves above the limiting rod, before moving, the rotating rod is pulled out by pulling the connecting block, a clamping block on the side face of the rotating rod is embedded in the clamping groove, a steel pipe is inserted in the inserting hole, the steel pipe is rotated, the transmission piece rotates, the transmission piece drives the belt to rotate, the fixing rod rotates, the baffle is quickly inserted above the rheological rock mass on the side face of the roadway under the action of the drill bit, the baffle is fixed by pulling the supporting plate, after clearing, the loose and rheological rock mass is reset by the opposite operation, grouting is completed after the second protecting layer and the third protecting layer are installed, and replacement is realized.
In the safety protection environment of the first supporting unit, partial extremely soft rock, expansion rock and rock mass which is loosened and changed under the action of external force of the partial extremely soft rock, the expansion rock and the rock mass which is loosened and changed under the action of the external force of the partial extremely soft rock and the expansion rock are dug out of a designed section of the roadway in advance, and then the method and means for filling the dug part with sprayed concrete are called reasonable replacement.
Characteristics of reasonable replacement
1. Broken and muddy rock is cleaned, sprayed concrete is adhered to the surface of surrounding rock, rebound of the concrete is reduced, and the spraying efficiency is improved.
2. The surrounding rock surface, especially the bottom angle and the weak part of the bottom plate are replaced by sprayed concrete, so that the rock is prevented from becoming a channel for releasing energy and an early weak body for expansion when the internal stress of the rock body changes.
3. The surface of the surrounding rock after cleaning and replacement is stable and smooth, and the adhesion degree of the concrete spraying layer and the surrounding rock is improved.
4. And the broken, deformed and rheological weak surrounding rock is removed, and the sprayed concrete is taken, so that the strength of the whole support ring body is improved.
In actual operation, the weak parts of surrounding rock surfaces, particularly bottom corners and bottom plates, are removed, reinforcement measures are applied, and the rock is prevented from becoming an energy release channel and an early weak body of expansion when the internal stress of the rock body changes. The following substitution modes are adopted:
1. advanced replacement
And adjusting and amplifying the section design of the roadway in advance according to the surrounding rock condition provided by geological data. If the roadway passes through the swelling rock more obviously or in the structural belt, the section should be enlarged by 10-15% (under the condition of safety and benefit permission, only reasonable and limited enlargement) so as to be beneficial to re-reinforcement after the surrounding rock is moved and changed.
2. Positioning replacement
Mainly aims at the weak rock coal bodies at the fixed position of two opposite base angles of the roadway to be used as key replacement, and is called positioning replacement.
3. Targeted replacement
The method is used for reasonably and carefully replacing the expansive rock, the weak mudstone and the broken and disintegrated rock mass of the shallow roadway.
4. Post-relaxation replacement
In the areas with high stress and strong structural stress of the deep well, the stress is released for a certain time, the replacement is carried out prematurely, the effect is affected to a certain extent, and the replacement can be carried out after the support at one layer is carried out, namely the replacement after the relaxation.
5. Dynamic displacement
Because the tough sealing layer is adopted, the roadway is moved without falling and burst disintegration, and the part which affects the safe use locally can be dynamically replaced at any time during the whole process service of the roadway on the basis of monitoring.
The combined replacement technology reflects the design concept of active support, actively cleans broken, deformed and rheological weak surrounding rock, replaces the broken, deformed and rheological weak surrounding rock with a concrete spraying layer, obviously reduces the breaking speed and the expansion force of the shallow surrounding rock of the roadway, and enhances the bearing effect of the bottom and the bottom angle.
Compared with the prior art, the invention has the following beneficial effects:
1. the bottom plates are arranged at the two ends of the first supporting layer, the vertical plates are fixed on the lower surface of the bottom plates, the bottom corners can be loosened and rheological rock mass is exposed outside while the first supporting layer is fixed, the baffle plates convenient to move are arranged between the vertical plates, when loosening and rheological rock mass cleaning are carried out, the baffle plates are pushed to the inside of the rock mass under the action of the limiting rods and the limiting blocks to clean the rock mass, the rock mass is prevented from falling off, the safety of constructors is guaranteed, after cleaning, the baffle plates can be reset, the damage to the first supporting layer is avoided, and the integrity of a supporting structure is guaranteed;
2. through being provided with the dead lever in the inside of baffle, and cup jointed the belt on the dead lever, and the dead lever is fixed on first bearing frame, and the center department of belt is provided with the driving medium, has inserted the dwang in the driving medium, utilizes the rotation of dwang, drives the rotation of driving medium, thereby makes the dead lever rotate, makes the drill bit can rotate in the rock mass of rheology, the quick promotion of baffle of being convenient for utilizes the baffle to cut apart the rock mass of rheology, can make the constructor clear away the rock mass of rheology fast convenient, accomplish construction safety convenient.
Drawings
FIG. 1 is a block diagram of a high rock burst roadway support system based on the soft rock replacement technique in the pit of the present invention.
FIG. 2 is a block diagram of the lower end of a first jacket in a high rock burst roadway support system based on the soft rock replacement technique in the pit of the present invention.
Fig. 3 is a cross-sectional view of fig. 2 of a high rock burst roadway support system based on a soft rock replacement technique downhole in accordance with the present invention.
Fig. 4 is an enlarged view of a portion of the high rock burst roadway support system of fig. 3 at a based on the soft rock replacement technique of the present invention downhole.
Fig. 5 is a schematic diagram of a connection structure of a second bearing in a high rock burst roadway support system based on the soft rock replacement technique in the pit.
Fig. 6 is a partial cross-sectional view of fig. 2 of a high rock burst roadway support system based on a soft rock replacement technique downhole in accordance with the present invention.
Reference numerals in the drawings: 1. roadway; 2. a first protective layer; 3. a second protective layer; 4. a third protective layer; 5. a bottom plate; 6. a riser; 7. grouting an anchor rod; 8. a ground support layer; 9. a limiting rod; 10. defining a slot; 11. a baffle; 12. a slide rod; 13. a support plate; 14. a slot; 15. defining a block; 16. a vertical groove; 17. a cavity; 18. a first bearing seat; 19. a fixed rod; 20. a linkage rod; 21. a connecting plate; 22. a second bearing seat; 23. a connecting rod; 24. a movable rod; 25. a drill bit; 26. a door panel; 27. a transmission member; 28. a clamping groove; 29. a rotating lever; 30. a clamping block; 31. a connecting block; 32. a jack; 33. a belt; 34. a connecting piece; 35. a rotating member; 36. a spring; 37. a hollow groove; 38. a fixed block; 39. a chute; 40. a mounting member; 41. and rotating the plate.
Detailed Description
Example 1
As shown in fig. 1-6, a high rock burst roadway support system based on the underground soft rock replacement technology comprises a roadway 1, a first supporting layer 2 is installed on the side surface of the roadway 1, a second supporting layer 3 is installed on the side surface of the first supporting layer 2, a third supporting layer 4 is installed on the side surface of the second supporting layer 3, ground supporting layers 8 are arranged on the two sides of the lower end of the roadway 1, grouting anchor rods 7 are installed on the side surface of the roadway 1, the grouting anchor rods 7 are fixed on the side surface of the third supporting layer 4, a bottom plate 5 is installed at the lower end of the first supporting layer 2, a plurality of groups of slots 14 are formed in the lower surface of the bottom plate 5, a plurality of groups of vertical plates 6 are fixed on the lower surface of the bottom plate 5, limiting rods 9 are fixed above the opposite surfaces of the plurality of groups of vertical plates 6, limiting grooves 10 are formed in the two sides of the upper surface of the limiting rods 9, a plurality of groups of baffle plates 11 are arranged on the lower surface of the bottom plate 5, a plurality of groups of baffle plates 11 are arranged on the side surfaces of the bottom plate 5, a plurality of baffle plates 11 are arranged on the side surfaces of the side of the limiting rods, a plurality of baffle plates 11 are arranged on the opposite sides of the side surfaces of the vertical plates, a plurality of the baffle plates 11 are respectively, a plurality of baffle plates 11 are arranged on the sides of the side surfaces of the side plates, a plurality of the baffle plates 11 are respectively and are arranged on the two sides of the side surfaces of the side plates, and are respectively, the baffle plates 11 are respectively connected with a sliding plate 11 and are in a groove 11 and are arranged on the opposite sides, and are in a mode, and are correspondingly and are arranged on the sides and are in the opposite sides and 16, and are respectively by the sides and are convenient to be convenient by the sides and opposite by the sides and 11 and are convenient by a layer and by a layer.
The baffle 11 is internally provided with a cavity 17, one side of the inside of the cavity 17 is fixed with a plurality of groups of first bearing seats 18, the inside of the first bearing seats 18 is fixed with a fixed rod 19, one end of the fixed rod 19 is provided with a linkage rod 20, two ends of the linkage rod 20 are fixed with connecting plates 21, the connecting plates 21 are inserted into one ends of the fixed rod 19 and are rotationally connected with the fixed rod 19, the other ends of the linkage rod 20 are provided with movable rods 24, one ends of the movable rods 24 are fixed with drill bits 25, the drill bits 25 are positioned in slots 14, the movable rods 24 are inserted into second bearing seats 22 and are fixedly connected with the second bearing seats 22, one ends of the opposite sides of the plurality of groups of linkage rods 20 are respectively fixed with connecting rods 23, the side surfaces of the second bearing seats 22 are fixedly provided with connecting pieces 34, the side surfaces of the connecting pieces 34 are provided with rotating pieces 35, the side surfaces of the rotating pieces 35 are fixedly provided with springs 36, the other end of the spring 36 is fixed in the fixed block 38, a hollow groove 37 is formed in the fixed block 38, the fixed block 38 is fixed on the inner wall of the baffle 11, the linkage rod 20 pulls the movable rod 24 by pulling the connecting rod 23, the drill bit 25 is positioned in the cavity 17, when the loose and rheological rock mass of the bottom angle is cleared, the door plate 26 is opened, the connecting rod 23 is pulled, the baffle 11 is rotated above the limiting rod 9, the connecting rod 23 is reset again and the door plate 26 is fixed, the baffle 11 moves above the limiting rod 9, before the baffle 11 moves, the rotating rod 29 is pulled out by pulling the connecting block 31, the clamping block 30 on the side surface of the rotating rod 29 is embedded in the clamping groove 28, the steel pipe is inserted in the jack 32, the transmission piece 27 rotates, the transmission piece 27 drives the belt 33 to rotate, the fixing rod 19 rotates, the baffle 11 is quickly inserted above the rheological rock mass on the side face of the roadway 1 under the action of the drill bit 25, the baffle 11 is fixed by pulling the supporting plate 13, when the connecting rod 23 is pulled, the movable rod 24 can be separated from the fixed block 38 under the action of the spring 36, the movable rod 24 is convenient to move, a plurality of groups of fixing rods 19 are sleeved with the belt 33, a plurality of groups of fixing rods 19 are provided with grooves, the belt 33 is arranged in the grooves, the transmission piece 27 is arranged at the center of the belt 33, two sides of the transmission piece 27 are in close contact with the belt 33, the surface of the transmission piece 27 is provided with the grooves, the belt 33 is arranged in the grooves, the transmission piece 27 is provided with through holes, the side face of the transmission piece 27 is provided with the clamping groove 28, the clamping groove 28 is arranged at the edge of the through holes, a rotating rod 29 is arranged in the transmission piece 27, one end of the side face of the rotating rod 29 is fixedly provided with the clamping block 30 corresponding to the clamping groove 28, one end of the rotating rod 29 is fixedly provided with the belt 33, the two ends of the rotating rod 31 are fixedly provided with the supporting plate 31, the two sides of the supporting plate 13 are provided with the connecting block 40, the two sides of the connecting plate 13 are respectively provided with the connecting block 13, and the two sides of the baffle 13 are respectively provided with the connecting block 13.
The invention provides a use method of a high rock burst roadway support system based on an underground soft rock replacement technology, which comprises the following specific steps:
step one: after the construction team finishes installing the first supporting layer 2, installing a bottom plate 5 at the lower end of the first supporting layer 2, installing a vertical plate 6 on the lower surface of the bottom plate 5 for supporting, and pulling a connecting rod 23 to enable a linkage rod 20 to pull a movable rod 24 by corresponding a sliding rod 12 on the side surface of a baffle 11 to a limiting groove 10 so as to enable a drill bit 25 to be positioned in a cavity 17;
step two: in the process of installing the baffle 11, as the two ends of the side surface of the baffle 11 are provided with through holes, the through holes are correspondingly arranged on the limiting blocks 15, so that the limiting blocks 15 enter the vertical grooves 16, at the moment, the limiting blocks 15 pass through the vertical grooves 16 at the two ends of the side surface of the baffle 11, at the moment, the connecting rods 23 are reset, so that the drill bit 25 is positioned in the slot 14, and the baffle 11 is fixed at the fixed door plate 26;
step three: when the loose and rheological rock mass at the bottom corner is removed, the door plate 26 is opened, the connecting rod 23 is pulled, the baffle 11 is rotated to the position above the limiting rod 9, the connecting rod 23 is reset and the door plate 26 is fixed again, the baffle 11 is moved above the limiting rod 9, before the movement, the rotating rod 29 is pulled out by pulling the connecting block 31, the clamping blocks 30 on the side face of the rotating rod 29 are embedded in the clamping grooves 28, the steel pipes are inserted in the insertion holes 32, the steel pipes are rotated, the transmission piece 27 is rotated, the transmission piece 27 drives the belt to rotate, the fixing rod 19 is rotated, the baffle 11 is quickly inserted above the rheological rock mass on the side face of the roadway 1 under the action of the drill bit 25, the baffle 11 is fixed by pulling the supporting plate 13, after the loose and rheological rock mass is removed, the baffle 11 is reset by the reverse operation, the grouting is completed after the second supporting layer 3 and the third supporting layer 4 are installed, and the grouting is completed after the grouting 7 is inserted.
It should be noted that, in use, the present invention is a high rock burst roadway support system based on the soft rock replacement technology in the pit, after the construction team installs the first supporting layer 2, the bottom plate 5 is installed at the lower end of the first supporting layer 2, the vertical plates 6 are installed on the lower surface of the bottom plate 5 to support, the baffle plates 11 are installed between the adjacent vertical plates 6, the baffle plates 11 are installed, the sliding rods 12 on the sides of the baffle plates 11 are corresponding to the limiting grooves 10, the linkage rods 20 pull the movable rods 24 by pulling the connecting rods 23, the drill bits 25 are located in the cavities 17, the limiting blocks 15 are entered into the vertical grooves 16 through the through holes on the two sides of the baffle plates 11, at this time, the connecting rods 23 are reset, the drill bits 25 are located in the slots 14, the fixed door plates 26 are fixed to the baffle plates 11, when the loose and rheological rock mass at the bottom angle is cleared, the door plates 26 are opened, the connecting rods 23 are pulled, the drill bit 25 is separated from the slot 14, the baffle 11 is rotated to the upper part of the limiting rod 9 under the action of the limiting block 15, the connecting rod 23 is reset again, the door plate 26 is fixed, the baffle 11 moves above the limiting rod 9, before the baffle 11 moves, the rotating rod 29 is pulled out by pulling the connecting block 31, the clamping block 30 on the side surface of the rotating rod 29 is embedded into the clamping groove 28, the steel pipe is inserted into the inserting hole 32, the steel pipe is rotated, the transmission piece 27 drives the belt 33 to rotate, the fixing rod 19 is rotated, the drill bit 25 on one end of the movable rod 24 is driven, the baffle 11 is quickly inserted to the upper part of the rheological rock body on the side surface of the roadway 1 under the action of the drill bit 25, the baffle 11 is fixed by pulling the supporting plate 13, after the loose and rheological rock body is cleared, the baffle 11 is reset by the reverse operation, after the second and third sheaths 3 and 4 are installed, grouting is completed by inserting a grouting anchor rod 7, and replacement is realized.
Claims (10)
1. The utility model provides a high rock burst tunnel support system based on soft rock replacement technique in pit, includes tunnel (1), first supporting layer (2), its characterized in that are installed to the side of tunnel (1): the lower extreme of first jacket (2) is installed bottom plate (5), a plurality of groups of slots (14) have been seted up to the lower surface of bottom plate (5), the lower surface mounting of bottom plate (5) has a plurality of groups riser (6), and the top of the opposite face of a plurality of groups riser (6) is fixed with and prescribes a limit to pole (9), prescribes a limit to the groove (10) have been seted up to the both sides of the upper surface of pole (9), and the opposite face top of a plurality of groups riser (6) is fixed with and prescribes a limit to piece (15), the lower surface of bottom plate (5) is provided with a plurality of groups of baffle (11), a plurality of groups baffle (11) all are provided with between a plurality of groups riser (6), the both sides of baffle (11) side are fixed with slide bar (12), slide bar (12) are corresponding with prescribing a limit to groove (10), vertical groove (16) have been seted up to the side of baffle (11), prescribing a limit to piece (15) are located vertical groove (16), door plant (26) are installed to the opposite side face of baffle (11).
2. A high rock burst roadway support system based on a soft rock replacement technique downhole as claimed in claim 1, wherein: the inside of baffle (11) has been seted up cavity (17), one side of cavity (17) inside is fixed with a plurality of groups of first bearing frame (18), the inside of first bearing frame (18) is fixed with dead lever (19), gangbar (20) are installed to the one end of dead lever (19), the both ends of gangbar (20) are fixed with connecting plate (21), connecting plate (21) insert the one end of dead lever (19), and rotate with dead lever (19) and be connected.
3. A high rock burst roadway support system based on a soft rock replacement technique downhole as claimed in claim 2, wherein: the movable rod (24) is installed to the other end of gangbar (20), the one end of movable rod (24) is fixed with drill bit (25), drill bit (25) are located slot (14), in second bearing frame (22) was inserted to movable rod (24), and both fixed connection, a plurality of groups the one end of gangbar (20) opposite face all is fixed with connecting rod (23).
4. A high rock burst roadway support system based on a soft rock replacement technique in a well as claimed in claim 3, wherein: the side of second bearing (22) is fixed with connecting piece (34), rotation piece (35) are installed to the side of connecting piece (34), the side of rotation piece (35) is fixed with spring (36), the other end of spring (36) is fixed in the inside of fixed block (38), set up empty slot (37) in fixed block (38), fixed block (38) are fixed on the inner wall of baffle (11).
5. The high rock burst roadway support system based on the soft rock replacement technique in the pit of claim 4, wherein: a plurality of groups of fixing rods (19) are sleeved with belts (33), a plurality of groups of fixing rods (19) are provided with grooves, belts (33) are arranged in the grooves, and a transmission part (27) is arranged at the center of each belt (33).
6. The high rock burst roadway support system based on the soft rock replacement technique in the pit of claim 5, wherein: the two sides of the transmission piece (27) are tightly contacted with the belt (33), the surface of the transmission piece (27) is provided with a groove, the belt (33) is arranged in the groove, the transmission piece (27) is provided with a through hole, the side surface of the transmission piece (27) is provided with a clamping groove (28), and the clamping groove (28) is arranged at the edge of the through hole.
7. The high rock burst roadway support system based on the soft rock replacement technique in the pit of claim 6, wherein: the inside of driving medium (27) is installed and is had dwang (29), the one end of dwang (29) side is fixed with fixture block (30), fixture block (30) are corresponding with draw-in groove (28), the one end of dwang (29) is fixed with connecting block (31), jack (32) have been seted up on connecting block (31).
8. A high rock burst roadway support system based on a soft rock replacement technique in the pit of claim 7, wherein: the side mounting of first supporting layer (2) has second supporting layer (3), the side mounting of second supporting layer (3) has third supporting layer (4), the both sides of tunnel (1) lower extreme are provided with ground supporting layer (8), the side mounting of tunnel (1) has slip casting stock (7), slip casting stock (7) are fixed in the side of third supporting layer (4).
9. The high rock burst roadway support system based on the soft rock replacement technique in the pit of claim 8, wherein: the side face of baffle (11) is installed backup pad (13), spout (39) have been seted up in the both sides of backup pad (13) are hugged closely to baffle (11), one end of backup pad (13) both sides face is fixed with installed part (40), install on installed part (40) and rotate board (41).
10. The method for using a high rock burst roadway support system based on the soft rock replacement technology in the pit as claimed in claim 9, wherein: the method comprises the following specific steps:
step one: after the first support layer (2) is installed by a construction team, a bottom plate (5) is installed at the lower end of the first support layer (2), a vertical plate (6) is installed on the lower surface of the bottom plate (5) for supporting, a sliding rod (12) on the side surface of a baffle plate (11) corresponds to a limiting groove (10), and a connecting rod (23) is pulled to enable a linkage rod (20) to pull a movable rod (24) so that a drill bit (25) is located in a cavity (17);
step two: in the process of installing the baffle plate (11), as the two ends of the side surface of the baffle plate (11) are provided with through holes, the through holes are correspondingly provided with limiting blocks (15), so that the limiting blocks (15) enter the vertical grooves (16), at the moment, the limiting blocks (15) pass through the vertical grooves (16) at the two ends of the side surface of the baffle plate (11), at the moment, the connecting rods (23) are reset, the drill bit (25) is positioned in the slot (14), the door plate (26) is fixed, and the baffle plate (11) is fixed;
step three: when the loose and rheological rock mass at the bottom angle is cleared, the door plate (26) is opened, the connecting rod (23) is pulled, the baffle plate (11) is rotated to the upper side of the limiting rod (9), the connecting rod (23) is reset and the door plate (26) is fixed again, the baffle plate (11) moves above the limiting rod (9), before moving, the connecting block (31) is pulled out, the rotating rod (29) is pulled out, the clamping block (30) at the side surface of the rotating rod (29) is embedded in the clamping groove (28), a steel pipe is inserted in the insertion hole (32), the steel pipe is rotated, the transmission piece (27) rotates, the transmission piece (27) drives the belt (19) to rotate, the baffle plate (11) is quickly inserted to the upper side of the rheological rock mass at the side surface of the roadway (1) under the action of the drill bit (25), the baffle plate (11) is fixed, the loose and rheological rock mass is cleared, after the moving, the baffle plate (11) is reset by the reverse operation, the second support layer (3) and the third support layer (7) are installed, and grouting is completed.
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| CN202110817016.1A CN113374498B (en) | 2021-07-20 | 2021-07-20 | High rock burst roadway support system based on underground soft rock replacement technology |
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| CN202110817016.1A CN113374498B (en) | 2021-07-20 | 2021-07-20 | High rock burst roadway support system based on underground soft rock replacement technology |
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| CN113374498B true CN113374498B (en) | 2023-07-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20120282041A1 (en) * | 2011-05-06 | 2012-11-08 | Breedlove John J | Yieldable cambered arch support assembly |
| CN103437770A (en) * | 2013-06-25 | 2013-12-11 | 淮北市平远软岩支护工程技术有限公司 | Supporting method for excitation gap pressure relief soft rock roadway |
| CN103334779A (en) * | 2013-06-25 | 2013-10-02 | 淮北市平远软岩支护工程技术有限公司 | Method for constructing isotropic surrounding rock soft rock roadway support |
| CN104612727A (en) * | 2014-12-18 | 2015-05-13 | 淮北市平远软岩支护工程技术有限公司 | Large plate bottom supporting method for soft rock roadway |
| CN105865820B (en) * | 2016-04-25 | 2018-07-20 | 湖南科技大学 | A kind of laboratory testing rig and method for simulating deep tunnel excavation |
| CN209115131U (en) * | 2018-12-14 | 2019-07-16 | 许波 | A kind of coal cutting roadway supporting of impact resistance |
| CN111022085A (en) * | 2019-12-05 | 2020-04-17 | 华亭煤业集团有限责任公司 | Pre-empty soft rock roadway supporting structure and construction method thereof |
| AU2020101351A4 (en) * | 2020-07-13 | 2020-08-20 | China University Of Mining And Technology | A MEIM-based design method and system for support of a roadway |
| CN112943306A (en) * | 2021-03-11 | 2021-06-11 | 淮北市平远软岩支护工程技术有限公司 | Roadway fault zone supporting method and step based on instability deformation research |
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