CN103557020A - Energy-absorption and impact-prevention supporting and protecting device for combined type circular tunnel - Google Patents
Energy-absorption and impact-prevention supporting and protecting device for combined type circular tunnel Download PDFInfo
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- CN103557020A CN103557020A CN201310555082.1A CN201310555082A CN103557020A CN 103557020 A CN103557020 A CN 103557020A CN 201310555082 A CN201310555082 A CN 201310555082A CN 103557020 A CN103557020 A CN 103557020A
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Abstract
The invention discloses an energy-absorption and impact-prevention supporting and protecting device for a combined type circular tunnel, belongs to the field of coal mine tunnel supporting technologies and is mainly applied to an energy-absorption and impact-prevention supporting and protecting device for impact ground pressure of a deep coal mine. According to the energy-absorption and impact-prevention supporting and protecting device, energy-absorption anchor rods are coupled with surrounding rocks of the tunnel to form a whole, so that the supporting and protecting strength of the surrounding rocks of the tunnel is improved, and the problem of overlarge pressure caused by rheology of the surrounding rocks of the tunnel is solved. The energy-absorption and impact-prevention supporting and protecting device comprises arc frames, wherein the adjacent arc frames are connected with each other through an energy-absorption connection rod; the arc frames consist of outer ring plates, energy-absorption cushion blocks and inner ring plates; two ends of the inner ring plates and two ends of the outer ring plates are connected through clamps; the energy-absorption cushion blocks consist of energy-absorption outer barrels and energy-absorption plates; the energy-absorption connection rods comprise hydraulic cylinders; left hinge lifting ring heads are fixed at the bottom ends of the hydraulic cylinders; pistons are arranged in the hydraulic cylinders; liquid injection holes are formed in the side walls of the hydraulic cylinders; cylinder covers are fixed at the right ends of the hydraulic cylinders; the left ends of supporting columns are connected with the pistons; the right ends of the supporting columns are arranged in the left ends of energy-absorption barrels; right hinge lifting ring heads are fixed at the bottom ends of the energy-absorption barrels.
Description
Technical field
The invention belongs to colliery tunnel support technical field, particularly relate to a kind of combined type circular tunnel energy-absorbing erosion control suspension device, be mainly used in the energy-absorbing erosion control suspension device of deep coalmine bump.
Background technology
Along with the increase of China's demand for energy and the exhaustion of superficial part coal resources, colliery cutting depth is deepened increasingly, and east China part mine has entered into the deep mining stage, and thousands of meters of dark mines are of common occurrence.Deep Mine buried depth is large, the stress of primary rock is large, and roadway surrounding rock is out of shape greatly under high-ground stress, uses the raising of the mining rate of modernization mining equipment in addition, frequency and strength increase that Deep Mine bump occurs, require roadway support device to have energy-absorbing flush-prevention function.
The suspension device that existing shaped steel forms is fairly simple, supporting capacity is larger, especially it is fast that closed U-shaped steel suspension device has the resistance of increasing speed, the advantages such as supporting intensity height and contractibility, be widely used in the soft-rock tunnel that deflection is larger, and be subject to dynamic pressure to affect larger stope of coal mines tunnel, it has overcome the not contractile shortcoming of rigid support, when the pressure of shoulder bed effects on closed U-shaped steel suspension device reaches certain value, it is moving to there is slip contracting in the support body of closed U-shaped steel suspension device in junction, the moving result of contracting of sliding makes the pressure drop of shoulder bed effects on support body, thereby the destruction of avoiding pressure from surrounding rock to be greater than the bearing capacity of support body and causing support body.But closed U-shaped steel suspension device belongs to passive protecting at present, cannot improve country rock residual strength, the expansion in uncontrollable rock crusher district, and the not coupling contacting with country rock, the support body unbalance stress that causes closed U-shaped steel suspension device, there is concentrated load and eccentric load in part, causes the interaction of support body and country rock poor, make support body integrated carrying ability lower, even cause support body deformation failure.
For the more tunnel of the dynamic phenomenons such as bump, impact and discharge a large amount of impact energys, act directly on suspension device, it is produced to strong impact failure, this just requires suspension device not only can bear powerful country rock static load, more want it to withstand shocks and press the strong dynamic load of high speed of generation, and existing closed U-shaped steel suspension device impact strength is lower, after the support body slippage of closed U-shaped steel suspension device is shunk, card is pulled pretightning force and is increased, and the type of attachment that card is pulled overlap joint cannot accomplish to shrink fast release, therefore cannot step down fast, the energy discharging in impact-absorbing ground pressure process in time, cannot effectively resist the high-strength dynamic load that bump produces.
Summary of the invention
The problem existing for prior art, the invention provides a kind of combined type circular tunnel energy-absorbing erosion control suspension device, this suspension device is coupled into one by energy-absorption anchor rod and roadway surrounding rock, improved the supporting intensity to roadway surrounding rock, impact energy while utilizing energy-absorbing cushion block impact-absorbing, utilize energy-absorbing connecting rod to shrink release and solved the excessive problem of pressure that roadway surrounding rock rheology causes, the hydraulic system being connected in series by hinged energy-absorbing connecting rod and energy-absorbing connecting rod makes suspension device have automatic regulating function, prevents that local pressure is excessive.
To achieve these goals, the present invention adopts following technical scheme: a kind of combined type circular tunnel energy-absorbing erosion control suspension device, comprise some sections of arc frames, between adjacent arc frame, leave distance, form inc circular support body, between adjacent arc frame, by energy-absorbing connecting rod, be connected, form closed support body, arc frame is by outer girth sheets, several energy-absorbing cushion blocks and interior girth sheets form, outer girth sheets, energy-absorbing cushion block and interior girth sheets are arc, the diameter of outer girth sheets is greater than the diameter of interior girth sheets, and be arranged on the outside of interior girth sheets, energy-absorbing cushion block is arranged between outer girth sheets and interior girth sheets, in every section, girth sheets is all pulled and is connected by card with the two ends of outer girth sheets, at interior girth sheets inner side, card, fastens and is provided with card and pulls hinged-support, is provided with energy-absorption anchor rod outside on girth sheets, described energy-absorbing cushion block is comprised of energy-absorbing urceolus and several energy-absorbing plates that are arranged in energy-absorbing urceolus, on the sidewall of the energy-absorbing urceolus adjacent with inside and outside girth sheets, be provided with guide rail, guide rail matches with inside and outside girth sheets respectively, inside and outside girth sheets can slide along the guide rail of energy-absorbing urceolus, energy-absorbing plate is the surperficial plate with hollow boss, and the diametric(al) of energy-absorbing plate circular support body along place is successively set on the inside of energy-absorbing urceolus, described energy-absorbing connecting rod comprises hydraulic cylinder, the bottom of hydraulic cylinder is fixed with left hinged suspension ring head, in hydraulic cylinder, be provided with piston, on the hydraulic cylinder sidewall in piston left side, be provided with liquid injection hole, the cylinder cap fixedly at the right-hand member of hydraulic cylinder with through hole, the internal diameter of cylinder cap is less than the external diameter of piston, the left end of pillar is connected with piston by the through hole of cylinder cap, it is inner that the right-hand member of pillar is arranged on energy-absorbing cylinder left end, on energy-absorbing cylinder left end sidewall, be provided with groove, be provided with several turn-buckles having on the energy-absorbing drum outer wall of groove, the bottom of energy-absorbing cylinder is fixed with right hinged suspension ring head.
Described card is pulled and by card, is fastened plate, fastening bolt, card and pull lower plate and form, card is fastened plate and is matched with outer girth sheets, card is pulled lower plate and is matched with interior girth sheets, card is fastened plate and is pulled lower plate with card and be fixedly connected with by fastening bolt, described card is pulled hinged-support and is fixed on card and pulls in lower plate, and the left and right hinged suspension ring head of described energy-absorbing connecting rod and the adjacent card of adjacent arc frame are pulled hinged-support and be hinged.
The cross section of described inside and outside girth sheets is circular, square or U-shaped.
The distance leaving between described adjacent arc frame is identical.
Described energy-absorbing plate is the plate that a side surface has hollow boss.
Described adjacent energy-absorbing plate is arranged on the inside of energy-absorbing urceolus according to projection and projection mode relative or that plate is relative with plate.
The hollow boss of described energy-absorbing plate is truncated cone-shaped.
Between described pillar and piston, with screw thread, be connected.
Between described hydraulic cylinder and cylinder cap, with screw thread, be connected.
The port of described turn-buckle is connected by turn-buckle screw rod, turn-buckle nut.
Beneficial effect of the present invention:
The application of suspension device of the present invention with promote can significantly improve the technical level of China's coal-mine safety and take precautions against natural calamities, anti-disaster ability, the generation of the major accident that effectively control dynamic disaster causes, reduce casualties, improve colliery digging speed and labor productivity, reduce prevention and cure project expense, have good social benefit, concrete advantage is as follows:
1, suspension device of the present invention is coupled into one by energy-absorption anchor rod and roadway surrounding rock, has improved the supporting intensity to roadway surrounding rock, and suspension device is become to active support by passive protecting, realizes prestressing force supporting, strengthens roadway surrounding rock residual strength; By energy-absorbing connecting rod and card, pull the closed support body of hinged formation, realized suspension device with the self-adjusting function of deformation of the surrounding rock in tunnel, integrate erosion control energy-absorbing, erosion control energy absorption ability is strong, simple in structure, easy for installation;
2, the hydraulic system of energy-absorbing connecting rod of the present invention is for being connected in series, and prevented the local failure that stress raisers that the unbalance stress because of different energy-absorbing connecting rods causes cause, improved the integer support performance of suspension device;
3, the hydraulic cylinder safety valve of energy-absorbing connecting rod of the present invention can arrange different safe threshold values from turn-buckle, realize quiet, moving separated composite endergonic, during roadway surrounding rock Slow Deformation, by the piston release of stepping down, impact while occurring, hydraulic system has little time the release of stepping down, and utilizes the quick erosion control energy-absorbing of energy-absorbing cylinder;
4, when inside and outside girth sheets of the present invention adopts the U-shaped steel of inside and outside circle, energy-absorbing cushion block has retrained the wing plate of the U-shaped steel in outer ring and the U-shaped steel of inner ring and has opened outward, increased the supporting intensity of suspension device, energy-absorbing cushion block plays energy-absorbing buffering effect simultaneously, the U-shaped steel of last supporting guarantee inner ring in protection tunnel is avoided impact failure, has guaranteed constructor's personal safety;
5, because the present invention has folding integral structure: energy-absorbing connecting rod and card are pulled and be hinged, energy-absorbing connecting rod can shrink in discharge opeing, can extract easily and efficiently hinging pin shaft, is convenient to dismounting, installs and carrying.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of combined type circular tunnel energy-absorbing erosion control suspension device of the present invention;
Fig. 2 is the structural representation of energy-absorbing connecting rod of the present invention;
Fig. 3 is the A-A sectional view of Fig. 1;
Fig. 4 is the structural representation of energy-absorbing plate of the present invention;
Fig. 5 is the B-B sectional view of Fig. 2;
Fig. 6 is the structural representation of energy-absorbing cylinder of the present invention;
Fig. 7 is the C-C sectional view of Fig. 6;
In figure, 1-energy-absorption anchor rod (anchor cable), the U-shaped steel in 2-outer ring, 3-energy-absorbing cushion block, 31-energy-absorbing urceolus, 32-energy-absorbing plate, 33-guide rail, 4-card is pulled, 41-card is fastened plate, 42-fastening bolt, 43-card is pulled lower plate, 44-card is pulled hinged-support, 5-energy-absorbing connecting rod, 51-left hinged suspension ring head, 52-liquid injection hole, 53-hydraulic cylinder, 54-piston, 55-cylinder cap, 56-pillar, 57-turn-buckle, 571-turn-buckle screw rod, 572-turn-buckle nut, 58-energy-absorbing cylinder, 59-right hinged suspension ring head, the U-shaped steel of 6-inner ring, 7--arc frame, the closed support body of 8--.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Fig. 1～Fig. 5, a kind of combined type circular tunnel energy-absorbing erosion control suspension device, be included in four sections of arc frames 7 in same perpendicular, between adjacent arc frame 7, leave distance, form inc circular support body, between adjacent arc frame 7, by energy-absorbing connecting rod 5, be connected, form closed support body 8, arc frame 7 is by the U-shaped steel 2 in outer ring, the U-shaped steel 6 of three energy-absorbing cushion blocks 3 and inner ring forms, the U-shaped steel 2 in outer ring, and the U-shaped steel 6 of energy-absorbing cushion block 3 and inner ring is concentric arcs, the diameter of the U-shaped steel 2 in outer ring is greater than the diameter of the U-shaped steel 6 of inner ring, and is arranged on the outside of the U-shaped steel 6 of inner ring; The length of the U-shaped steel 2 in outer ring is greater than the length of the U-shaped steel 6 of inner ring, and the two ends of the U-shaped steel 2 in outer ring extend in the two ends of the U-shaped steel 6 of inner ring, and energy-absorbing cushion block 3 is evenly distributed between the U-shaped steel 2 in outer ring and the U-shaped steel 6 of inner ring; The two ends of every section of U-shaped steel 6 of inner ring are all pulled 4 by high-strength card and are connected with the U-shaped steel 2 in outer ring, at the U-shaped steel of inner ring 6 inner sides, high-strength card, pull and on 4, are provided with card and pull hinged-support 44; Two ends at the U-shaped steel 2 in outer ring not contacting with the U-shaped steel 6 of inner ring are provided with energy-absorption anchor rod (anchor cable) 1, for being coupled into one with roadway surrounding rock; Described energy-absorbing cushion block 3 is comprised of energy-absorbing urceolus 31 and several energy-absorbing plates 32 that are arranged in energy-absorbing urceolus 31, on the sidewall of the energy-absorbing urceolus 31 adjacent with the U-shaped steel of inside and outside circle, be provided with guide rail 33, guide rail 33 matches with the U-shaped steel of inside and outside circle respectively, and the U-shaped steel of inside and outside circle can slide along the guide rail 33 of energy-absorbing urceolus 31, the guide rail 33 of energy-absorbing urceolus 31 can retrain the wing plate of the U-shaped steel of inside and outside circle, while preventing that the U-shaped steel of inside and outside circle is crooked, the U-shaped steel wing plate of inside and outside circle generation bending deformation, strengthens the flexural strength of the U-shaped steel of inside and outside circle; Between energy-absorbing cushion block 3 and the U-shaped steel of inside and outside circle, all can produce slip along the circumferential direction, while preventing that the U-shaped steel 2 in roadway surrounding rock extruding outer ring from deforming, the U-shaped steel 2 in 3 pairs of outer rings of energy-absorbing cushion block produces extra Moment, thereby has improved the anti-pressure ability of suspension device; Energy-absorbing plate 32 is the steel plate that a side surface has hollow boss, and hollow boss is evenly distributed on steel plate, and the diametric(al) of energy-absorbing plate 32 circular support body along place stacks gradually the inside at energy-absorbing urceolus 31; When roadway surrounding rock Rheological Deformation, energy-absorbing cushion block 3, the U-shaped steel 2 in outer ring and the U-shaped steel 6 of inner ring can increase the flexural strength of suspension device, when impacting generation, roadway surrounding rock snap action is U-shaped steel 2 in outer ring, can make the U-shaped steel 2 in outer ring that strong being damaged deformation occurs, the U-shaped steel 2 in outer ring acts on energy-absorbing cushion block 3, the hollow boss of the energy-absorbing plate 32 of energy-absorbing cushion block 3 is under quick high-strength load, to be extruded elastic-plastic deformation and destruction will occur, impact-absorbing energy, play cushioning effect, the load of reducing effect on the U-shaped steel 6 of inner ring, prevents that the U-shaped steel 6 of inner ring from destroying;
Described energy-absorbing connecting rod 5 comprises hydraulic cylinder 53, the bottom of hydraulic cylinder 53 is fixed with left hinged suspension ring head 51, in hydraulic cylinder 53, be provided with piston 54, on hydraulic cylinder 53 sidewalls in piston 54 left sides, be provided with liquid injection hole 52, during use, 52 series connection of the liquid injection hole of four energy-absorbing connecting rods 5 are communicated with, and be connected with triple-use valve, realize the function of fluid injection and overload overflow; The cylinder cap 55 fixedly at the right-hand member of hydraulic cylinder 53 with through hole, the internal diameter of cylinder cap 55 is less than the external diameter of piston 54, be used for preventing that piston 54 from departing from from hydraulic cylinder 53, the left end of pillar 56 is connected with piston 54 by the through hole of cylinder cap 55, it is inner that the right-hand member of pillar 56 is arranged on energy-absorbing cylinder 58 left ends, on energy-absorbing cylinder 58 left end sidewalls, be provided with vertically groove, be provided with several turn-buckles 57 having on energy-absorbing cylinder 58 outer walls of groove, by adjusting the pretightning force of turn-buckle 57, regulate the force of sliding friction between energy-absorbing cylinder 58 and pillar 56; The bottom of energy-absorbing cylinder 58 is fixed with right hinged suspension ring head 59.
Described high-strength card pull 4 by card fasten plate 41, fastening bolt 42, card is pulled lower plate 43 and is formed, card is fastened plate 41 and is matched with the U-shaped steel 2 in outer ring, card is pulled lower plate 43 and is matched with the U-shaped steel 6 of inner ring, card is fastened plate 41 and is pulled lower plate 43 with card and be fixedly connected with by fastening bolt 42, described card is pulled hinged-support 44 and is fixed on card and pulls in lower plate 43, the left and right hinged suspension ring head of described energy-absorbing connecting rod 5 and the adjacent card of adjacent arc frame 7 are pulled hinged-support 44 and are hinged, and in the time of can avoiding arc frame 7 to shrink, between arc frame 7, produce additional bending moment.
The distance leaving between described adjacent arc frame 7 is identical.
Described adjacent energy-absorbing plate 32 stacks gradually the inside at energy-absorbing urceolus 31 according to projection with projection mode relative or that plate is relative with plate.
The hollow boss of described energy-absorbing plate 32 is truncated cone-shaped.
Between described pillar 56 and piston 54, with screw thread, be connected.
Between described hydraulic cylinder 53 and cylinder cap 55, with screw thread, be connected.
The port of described turn-buckle 57 is connected by turn-buckle screw rod 571, turn-buckle nut 572.
Below in conjunction with accompanying drawing, a use procedure of the present invention is described:
As shown in Fig. 1～Fig. 7, first energy-absorbing cushion block 3 is placed between the U-shaped steel of inside and outside circle, and pull 4 connections by high-strength card, form one section of arc frame 7, with same method, make altogether four sections of arc frames 7, again adjacent card on adjacent arc frame 7 is pulled to hinged-support 44 and be hinged with the two ends of same energy-absorbing connecting rod 5, finally by four energy-absorbing connecting rods 5, four sections of arc frames 7 are connected, form a closed support body 8; Set the hydraulic cylinder safety valve of energy-absorbing connecting rod 5 and the safe threshold values of turn-buckle 57: the safe threshold values of hydraulic cylinder safety valve is less than the safe threshold values of turn-buckle 57.
By liquid injection hole 52 to the interior injection liquid hydraulic fluid of hydraulic cylinder 53, closed support body 8 is risen, supported laneway country rock, when closed support body 8 approaches roadway surrounding rock, stop topping up, after using the fillers such as backboard that the space-filling between closed support body 8 and roadway surrounding rock is sturdy, continuation is to the interior injection liquid hydraulic fluid of hydraulic cylinder 53, make 8 pairs of roadway surrounding rocks of closed support body produce active support power, the hydraulic pressure in hydraulic cylinder 53 arrives after the specified resistance of closed support body 8, finishes fluid injection.On the roadway surrounding rock corresponding with energy-absorption anchor rod (anchor cable) 1, hole, after hole forms, energy-absorption anchor rod (anchor cable) 1 is installed, make closed support body 8 and roadway surrounding rock form an integer support, improved the supporting intensity to roadway surrounding rock, suspension device is become to active support by passive protecting, realize prestressing force supporting, strengthen country rock residual strength.
In roadway surrounding rock rheology slowly in deformation process, roadway surrounding rock pushes closed support body 8, when closed support body 8 reaches its yield load, be that the hydraulic pressure of energy-absorbing connecting rod 5 is while reaching rated operating pressure, the triple-use valve being connected with the liquid injection hole 52 of energy-absorbing connecting rod 5 starts overflow release, prevent that closed support body 8 from surpassing its yield load, produces distortion and destroy, while impacting dynamic load generation, roadway surrounding rock has applied quick intense impact load to closed support body 8, shock loading far surpasses the yield load of closed support body 8, first roadway surrounding rock is applied on energy-absorbing cushion block 3 by the U-shaped steel 2 in outer ring the effect of closed support body 8, there is elastic-plastic deformation and destruction in the energy-absorbing plate 32 of energy-absorbing cushion block 3, absorption portion impact energy, play cushioning effect, the surge of reduction to the U-shaped steel 6 of inner ring, then shock loading is applied on energy-absorbing connecting rod 5 by the U-shaped steel 6 of inner ring, shock loading far surpasses the hydraulic pressure rated operating pressure of energy-absorbing connecting rod 5, the discharge opeing of energy-absorbing connecting rod 5 is limited in one's ability, the release of discharge opeing in time, now the energy-absorbing cylinder 31 of energy-absorbing connecting rod 5 starts to produce relative sliding contraction with pillar 56, by absorption portion impact energy, energy-absorbing cylinder 31 is punctured into roadway surrounding rock deformation space is provided, reduce the active force of roadway surrounding rock to closed support body 8, reduce the pressure of closed support body 8, prevent the whole unstable failure of closed support body 8, avoid whole tunnel to cave in,
Energy-absorbing connecting rod 5 and card are pulled 4 liquid injection holes 52 hinged and energy-absorbing connecting rod 5 and connects and be communicated with the function with automatic adjustment closure support body 8 support forces, when back pressure increases, closed support body 8 increases perpendicular to back directional pressure, closed support body 8 will be along shrinking perpendicular to back direction, closed support body 8 is parallel to the also increase thereupon of support force of back direction simultaneously, the support force that is 8 pairs of roadway's sides of closed support body increases, roadway's sides is subject to support force, can increase the compressive strength of roadway's sides country rock, improve the support force of roadway's sides country rock to top board, and then reduce the pressure of back to closed support body 8, realize closed support body 8 and the automatic stress adjustment of roadway surrounding rock in deformation process, significantly improve the supporting intensity to whole roadway surrounding rock.
Claims (10)
1. a combined type circular tunnel energy-absorbing erosion control suspension device, it is characterized in that comprising some sections of arc frames, between adjacent arc frame, leave distance, form inc circular support body, between adjacent arc frame, by energy-absorbing connecting rod, be connected, form closed support body, arc frame is by outer girth sheets, several energy-absorbing cushion blocks and interior girth sheets form, outer girth sheets, energy-absorbing cushion block and interior girth sheets are arc, and the diameter of outer girth sheets is greater than the diameter of interior girth sheets, and be arranged on the outside of interior girth sheets, energy-absorbing cushion block is arranged between outer girth sheets and interior girth sheets, in every section, girth sheets is all pulled and is connected by card with the two ends of outer girth sheets, at interior girth sheets inner side, card, fastens and is provided with card and pulls hinged-support, is provided with energy-absorption anchor rod outside on girth sheets, described energy-absorbing cushion block is comprised of energy-absorbing urceolus and several energy-absorbing plates that are arranged in energy-absorbing urceolus, on the sidewall of the energy-absorbing urceolus adjacent with inside and outside girth sheets, be provided with guide rail, guide rail matches with inside and outside girth sheets respectively, inside and outside girth sheets can slide along the guide rail of energy-absorbing urceolus, energy-absorbing plate is the surperficial plate with hollow boss, and the diametric(al) of energy-absorbing plate circular support body along place is successively set on the inside of energy-absorbing urceolus, described energy-absorbing connecting rod comprises hydraulic cylinder, the bottom of hydraulic cylinder is fixed with left hinged suspension ring head, in hydraulic cylinder, be provided with piston, on the hydraulic cylinder sidewall in piston left side, be provided with liquid injection hole, the cylinder cap fixedly at the right-hand member of hydraulic cylinder with through hole, the internal diameter of cylinder cap is less than the external diameter of piston, the left end of pillar is connected with piston by the through hole of cylinder cap, it is inner that the right-hand member of pillar is arranged on energy-absorbing cylinder left end, on energy-absorbing cylinder left end sidewall, be provided with groove, be provided with several turn-buckles having on the energy-absorbing drum outer wall of groove, the bottom of energy-absorbing cylinder is fixed with right hinged suspension ring head.
2. combined type circular tunnel energy-absorbing erosion control suspension device according to claim 1, it is characterized in that described card is pulled fastens plate, fastening bolt, card by card and pulls lower plate and form, card is fastened plate and is matched with outer girth sheets, card is pulled lower plate and is matched with interior girth sheets, card is fastened plate and is pulled lower plate with card and be fixedly connected with by fastening bolt, described card is pulled hinged-support and is fixed on card and pulls in lower plate, and the left and right hinged suspension ring head of described energy-absorbing connecting rod and the adjacent card of adjacent arc frame are pulled hinged-support and be hinged.
3. combined type circular tunnel energy-absorbing erosion control suspension device according to claim 1, the cross section that it is characterized in that described inside and outside girth sheets is circular, square or U-shaped.
4. combined type circular tunnel energy-absorbing erosion control suspension device according to claim 1, is characterized in that the distance leaving between described adjacent arc frame is identical.
5. combined type circular tunnel energy-absorbing erosion control suspension device according to claim 1, is characterized in that described energy-absorbing plate is the plate that a side surface has hollow boss.
6. combined type circular tunnel energy-absorbing erosion control suspension device according to claim 1, is characterized in that described adjacent energy-absorbing plate is arranged on the inside of energy-absorbing urceolus according to projection and projection mode relative or that plate is relative with plate.
7. combined type circular tunnel energy-absorbing erosion control suspension device according to claim 1, the hollow boss that it is characterized in that described energy-absorbing plate is truncated cone-shaped.
8. combined type circular tunnel energy-absorbing erosion control suspension device according to claim 1, is characterized in that with screw thread, being connected between described pillar and piston.
9. combined type circular tunnel energy-absorbing erosion control suspension device according to claim 1, is characterized in that with screw thread, being connected between described hydraulic cylinder and cylinder cap.
10. combined type circular tunnel energy-absorbing erosion control suspension device according to claim 1, is characterized in that the port of described turn-buckle is connected by turn-buckle screw rod, turn-buckle nut.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310555082.1A CN103557020B (en) | 2013-11-07 | 2013-11-07 | Energy-absorption and impact-prevention supporting and protecting device for combined type circular tunnel |
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| CN201310555082.1A CN103557020B (en) | 2013-11-07 | 2013-11-07 | Energy-absorption and impact-prevention supporting and protecting device for combined type circular tunnel |
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| CN103557020B CN103557020B (en) | 2015-07-01 |
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| CN104653201A (en) * | 2015-02-11 | 2015-05-27 | 杨晓东 | Hexagonal short arm half-opened support and construction process thereof |
| CN107237643A (en) * | 2017-08-14 | 2017-10-10 | 成都理工大学 | A kind of novel hydraulic resistance increasing type tunnel is by pressure device |
| CN107237643B (en) * | 2017-08-14 | 2023-03-21 | 成都理工大学 | Novel hydraulic resistance-increasing type tunnel pressure-yielding device |
| CN110863845A (en) * | 2019-12-03 | 2020-03-06 | 宁波朗达工程科技有限公司 | Double-layer telescopic steel arch frame |
| CN112523776A (en) * | 2020-11-23 | 2021-03-19 | 安徽理工大学 | Thin bedrock supporting construction |
| CN112523776B (en) * | 2020-11-23 | 2022-03-08 | 安徽理工大学 | Thin bedrock supporting construction |
| CN112431596A (en) * | 2020-11-26 | 2021-03-02 | 中煤科工开采研究院有限公司 | Three-stage prevention and control method for rock burst roadway |
| CN112431596B (en) * | 2020-11-26 | 2022-02-15 | 中煤科工开采研究院有限公司 | Three-stage prevention and control method for rock burst roadway |
| CN112943294A (en) * | 2021-02-07 | 2021-06-11 | 湖南科技大学 | Assembled roadway reinforcing and supporting structure |
| CN114970161A (en) * | 2022-05-30 | 2022-08-30 | 中南大学 | Method for integrating stability analysis and energy absorption support of joint roadway block |
| CN114970161B (en) * | 2022-05-30 | 2023-09-22 | 中南大学 | Integrated method for stability analysis and energy absorption support of joint roadway block |
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| CN103557020B (en) | 2015-07-01 |
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