CN102606181A - Hyperstatic scour prevention four-dimensional roadway support device and support method thereof - Google Patents
Hyperstatic scour prevention four-dimensional roadway support device and support method thereof Download PDFInfo
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- CN102606181A CN102606181A CN2012100707672A CN201210070767A CN102606181A CN 102606181 A CN102606181 A CN 102606181A CN 2012100707672 A CN2012100707672 A CN 2012100707672A CN 201210070767 A CN201210070767 A CN 201210070767A CN 102606181 A CN102606181 A CN 102606181A
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Abstract
The invention discloses a hyperstatic scour prevention four-dimensional roadway support device, which comprises anchor cables and anchor rods, wherein the anchor cables are distributed on a laneway top, a laneway side or a bottom plate in an arrayed manner according to a certain regularity, and the anchor rods are arranged on the laneway top, the laneway side or the bottom plate. A hole protecting bowl-shaped lock is arranged at an anchor cable hole of each anchor cable, each anchor cable exposed in a laneway is disassembled into a plurality of steel strands, the steel strands are connected with the adjacent anchor rods through locks in different directions or are connected with steel strands of the anchor cables, and a deformation block is arranged between each steel strand and a coal-rock mass surface. By the aid of the hyperstatic scour prevention four-dimensional roadway support device in the technical scheme, axial, tangential and radial acting force of the laneway can be controlled, and the support device is applicable to control of large deformation of engineering surrounding rocks with strong disturbance and outburst-proneness in an area of high stress. The invention further discloses a support method of the hyperstatic scour prevention four-dimensional roadway support device, which is simple, convenient and reliable in operation and convenient in construction.
Description
Technical field
The present invention relates to a kind of tunnel (chamber) support reinforcement device and supporting method thereof, four-dimensional suspension device of the indeterminate erosion control in region of high stress tunnel and supporting method thereof under especially a kind of coal mine.
Technical background
Along with the increase of the coal mining degree of depth, overlying strata motion and mine pressure have all shown some new features.Problems such as the country rock of deep stope, tunnel and chamber presents characteristics such as stress height, temperature is high, underground water hydraulic pressure is high, strength of turbulence is high, danger of burst is high, creep is obvious, distortion is big, causes tunnel and chamber support difficulty, reprocesses frequently, and maintenance cost is huge.
At present, the tunnel of high stress areas and chamber support mainly adopt technology such as common anchor rete cord, truss anchor pole, anchor notes, U-shaped steel bushing canopy.These adopt method support technologies such as reinforcement; Relatively be fit to superficial part exploitation surrouding rock deformation control; But the Deformation control to deep wall rock with characteristics such as stress height, temperature are high, underground water hydraulic pressure is high, strength of turbulence is high, danger of burst is high, creep is obvious, distortion is big can not reach better effects.
Common anchor rete cord supporting: mainly improve roadway surrounding rock subregion non-deformability radially, can not apply along the tunnel axially and the active force of tangential, can't better control between anchor pole, the distortion of country rock between anchor cable and between anchor pole and anchor cable to country rock; Particularly the backwardness that collapses large deformation appears and in country rock when between the anchor pole, can cause bolt support to lose efficacy, and causes disasters such as roof fall.
The patent No. is 200410041465.8 disclosed a kind of heading 3-D anchorage cable net support technologies,
(1) direction being arranged is one steel strand, can make all directions discontinuity;
(2) anchor cable afterbody steel strand in outer, anchor cable hole horizontal plane cross direction separately, after the stretch-draw, forward and backward steel strand axially do not have squeezing action to the power Compositional balance power system of anchor cable to coal petrography along the tunnel;
(3) along single interval, back axis the fixedly anchor cable of roof strata is set, only is applicable to the tunnel that section is less;
(4) this steel strand connected mode causes eccentric tension easily, makes the part steel strand because load is bigger and disrumpent feelings;
(5) anchor cable and anchor pole are in same row, receive the influence of anchor pole exposed parts and lockset, can't be right after top board, and steel strand can't apply radial load to top board.
(6), when the disconnected thigh of steel strand, will weaken the control action of anchor cable to roof deformation because the guard aperture bowl does not have locking function to anchor cable.
The patent No. is 200410041386.7 disclosed a kind of truss support technology of controlling the distortion of coal petrography top group,
(1) two anchor cable connects whole group of control or top coal petrography, and the extruding scope is big, act on limitedly, particularly group or crown center coal petrography is not partly almost had effect;
(2) the steel strand overwhelming majority can not be close to the surface, tunnel, can't apply extruding force;
(3) coal petrography there be not the active force axial along the tunnel;
(4) coupling bears unbalance loading, damages easily;
(5) anchor cable part component has effect to surrouding rock deformation control, and most of power is used for mutual balance, and efficient is not high.
Notification number is the disclosed a kind of 3-D anchorage cable of CN2564755Y
(1) direction being arranged is one steel strand, can make all directions discontinuity;
(2) rope one beyond the anchor hole is divided into four, is locked on two corresponding tightrope steel wires of anchor hole by the double-way opposed-pulling lockset.After the stretch-draw, front and back steel wire, left and right sides steel wire be to the power of anchor cable Compositional balance power system respectively, to coal petrography along the tunnel axially and the tangential do not have squeezing action;
(3) the guard aperture bowl is pintongs wing circle, when the bending steel wire connects, when stretch-draw and later stage distortion, steel wire slips into notch easily, isolates country rock; In addition, because the guard aperture bowl does not have locking function, when the disconnected thigh of steel wire, will weaken the control action of rope to crushing;
(4) rope receives the influence of guard aperture bowl and lockset, and steel wire can't be close to top board, can't apply radial load to top board.
(5) steel wire that does not link with other rope, fixedly difficulty is very big for it; When not so good, can weaken the control action of rope when fixing equally to crushing.
Summary of the invention
Technical problem: the objective of the invention is to the deficiency to prior art, provide the indeterminate erosion control in a kind of tunnel four-dimensional suspension device, this device is applicable to the region of high stress, strong disturbance, Deformation control and the protection of impacting tendentious big section engineering surrounding rock is arranged.Another one purpose of the present invention is to provide the supporting method of the four-dimensional suspension device of the indeterminate erosion control in said tunnel, and this method is easy and simple to handle reliable, is convenient to construction.
Technical scheme: the four-dimensional suspension device of the indeterminate erosion control in tunnel of the present invention; Comprise according to the anchoring anchor cable that is arranged on lane top, lane group or base plate of certain rule array distribution and be arranged on the anchor pole of top, lane, lane group or base plate; The anchoring anchor cable is provided with guard aperture bowl lock at place, anchor cable hole; Described anchoring anchor cable exposes anchor cable in the tunnel and breaks and be some groups of steel strand; Described steel strand are connected the perhaps steel strand connection of anchoring anchor cable to different directions through lockset with adjacent anchor pole, be provided with deformation block between described steel strand and the coal and rock surface.
The central straight steel strand of described anchoring anchor cable are provided with the sensor that is used for nondestructive testing instrument.
Described lockset comprises lock collar, taper pintle hook lock, volute spring and catch; Symmetry has bellmouth on the lock collar; Put into the taper pintle hook lock in the bellmouth; There is volute spring on taper pintle hook lock afterbody top, and the volute spring afterbody is provided with catch, and the bellmouth arranged outside is useful on the pin of regulating taper pintle hook lock taper angle.Go deep into the size change taper pintle hook lock of bellmouth and the frictional resistance between the steel strand through regulating pin; The taper angle of taper pintle hook lock can guarantee that the frictional resistance between taper pintle hook lock and the steel strand is constant after setting, and can dynamically control the inner tensile force of steel strand of anchoring anchor cable.
Described deformation block can be according to the different colors that change of stressing conditions.
After the supporting method tunnelling of the four-dimensional suspension device of the indeterminate erosion control in a kind of tunnel, under the protection of temporary lining, at first set, install the middle anchor pole in centre position, top, lane; Next sets, installs top, lane and the drift angle anchor pole at group drift angle place, lane, portion of group anchor pole, the drift angle anchor pole at base angle and the base plate anchor pole of base plate of lane group; Beat the anchor cable hole along the vertical working surface direction at last, the anchoring anchor cable is stirred in the anchoring agent of packing into; Guard aperture bowl lock according to the selected corresponding taper angle of the design anchor cable maximum working load that can bear; Go into the anchoring anchor cable to guard aperture bowl lock tube, and push in the anchor cable hole, described anchoring anchor cable is broken anchor cable at place, anchor cable aperture; Outside steel strand after breaking are divided into some groups; Lockset according to the selected corresponding taper angle of the design steel strand maximum working load that can bear is connected with drift angle anchor pole or base angle anchor pole through the limit lockset towards different directions, is connected through the steel strand of middle lockset with other anchoring anchor cable; Between steel strand and coal and rock, install deformation block; Simultaneously the steel strand of all directions are carried out pretension with tensioning equipment, reach and the central straight steel strand are cut off apart from a distance, aperture after setting pretightning force, the sensor that is used for nondestructive testing instrument that can monitor anchoring anchor cable state is installed on the central straight steel strand; Repeat above-mentioned steps and accomplish the supporting of portion of group, the anchor pole in tunnel is as a whole through the steel strand connection tractive of anchoring anchor cable.What described lockset was used to connect steel strand and drift angle anchor pole is called the limit lockset, is used for connecting the lockset that is called of steel strand and steel strand.
About hysteresis heading end 15m according to field condition by single or three the flower or the five figured cloth modes of putting beat the pressure relief vent of the certain pore size and the degree of depth.
Beneficial effect: the present invention compared with prior art, its beneficial effect is:
(1) make tunnel or surrounding rock of chamber in new balanced structure, be in the three-dimensional isopiestic state; Give full play to the supporting capacity of country rock self; Help keeping the integrality of top board, between guard aperture bowl lock and the middle lockset connect steel strand and can when roadway surrounding rock generation large deformation, stretch automatically, and keep constant work frictional resistance; Absorb the country rock energy through constant resistance and large deformation, can under country rock large deformation condition, still have support action preferably;
(2) use guard aperture bowl lock with in, the limit lockset, improved the safety of supporting;
(3) reach and anchor cable middle straight steel strand are cut off sensor installation apart from a distance, aperture after setting pretightning force, can realize anchoring anchor cable length and stressed is carried out nondestructive testing;
(4) guard aperture bowl lock, lockset all have overload protection and the underload function of nourishing, and can regularly regulate according to the surrouding rock deformation situation, the strong supporting of coordinating such as can realize;
(5) through beating pressure relief vent, realize that stress is whole straight to deep transfer and surface, maintenance tunnel, reduce shock hazard.
Description of drawings
Fig. 1 is the schematic perspective view of the four-dimensional suspension device of the indeterminate erosion control in tunnel of the present invention;
Fig. 2 is the on-the-spot scheme sketch map of the four-dimensional suspension device of the indeterminate erosion control in tunnel of the present invention;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the structural representation of lockset;
Fig. 5 is the sectional view of Fig. 4.
Among the figure: anchor pole among the 1-; 2-drift angle anchor pole; 3-limit lockset; Portion of 4-group anchor pole; 5-anchoring anchor cable; 6-guard aperture bowl lock; Lockset among the 7-; The 8-deformation block; The 9-pressure relief vent; The 10-sensor; The 11-lock collar; 12-taper pintle hook lock; The 13-volute spring; The 14-catch; The 15-bellmouth; The 16-steel strand; The 17-pin; 18-base plate anchor pole.
The specific embodiment
Below in conjunction with accompanying drawing, through a most preferred embodiment, technical scheme of the present invention is elaborated, but protection scope of the present invention is not limited to said embodiment.
Like Fig. 1, Fig. 2 and shown in Figure 3; The four-dimensional suspension device of the indeterminate erosion control in a kind of tunnel; Comprise the middle anchor pole 1 and drift angle anchor pole 2 that are arranged on the top, lane, portion of the group anchor pole 4 of lane group is arranged on the base plate anchor pole 18 of base plate and the drift angle anchor pole at base angle; Also comprise the anchoring anchor cable 5 that is arranged on top, lane, lane group and base plate that distributes according to rectangular array; Described anchoring anchor cable 5 exposes anchor cable in the tunnel breaks and is some groups of steel strand 16, and described steel strand 16 are connected the perhaps steel strand connection of anchoring anchor cable to different directions through lockset with adjacent anchor pole, be provided with deformation block 8 between described steel strand and the coal and rock surface; The central straight steel strand of described anchoring anchor cable are provided with the sensor 10 that is used for nondestructive testing instrument; Described anchoring anchor cable is provided with guard aperture bowl lock 6 at anchor cable hole place, between the steel strand of described different anchoring anchor cables, be connected through middle lockset 7 between steel strand and the anchor pole, be connected through limit lockset 3 between described steel strand and the drift angle anchor pole.Like Fig. 4 and shown in Figure 5; Middle lockset, limit lockset comprise lock collar 11, taper pintle hook lock 12, volute spring 13 and catch 14; Symmetry has bellmouth 15 on the lock collar 11, puts into taper pintle hook lock 12 in the bellmouth 15, and there is volute spring 13 on taper pintle hook lock 12 afterbodys top; The volute spring afterbody is provided with catch 14, and bellmouth 15 arranged outside are useful on the pin 17 of regulating taper pintle hook lock taper angle.Go deep into the size change taper pintle hook lock of bellmouth and the frictional resistance between the steel strand through regulating pin; The taper angle of taper pintle hook lock can guarantee that the frictional resistance between taper pintle hook lock and the steel strand is constant after setting, and can dynamically control the inner tensile force of steel strand of anchoring anchor cable, thus in lockset, limit lockset be called the constant-resistance lockset; Be used for dynamically controlling the inner tensile force of steel strand; Have overload protection and the underload function of nourishing, connecting steel strand between guard aperture bowl lock and the lockset can self adaptive slippage when roadway surrounding rock generation large deformation, and keeps constant working resistance; Described deformation block 8 can provide caution to the user according to the different colors that change of stressing conditions.
The supporting method of the four-dimensional suspension device of the indeterminate erosion control in a kind of tunnel is after the tunnelling, under the protection of temporary lining; At first set, install the middle anchor pole 1 in centre position, top, lane, next sets, installs top, lane and the drift angle anchor pole 2 at group drift angle place, lane and portion of the group anchor pole 4 of lane group, the drift angle anchor pole at base angle and the base plate anchor pole 18 of base plate; Beat the anchor cable hole along the vertical working surface direction at last, anchor cable hole rectangular array distributes, the anchoring agent of in the anchor cable hole, packing into; Stir anchoring anchor cable 5, the guard aperture bowl lock of the selected corresponding taper angle of maximum working load that can bear according to the design anchor cable is inserted in anchoring anchor cable 5 to guard aperture bowl lock 6; And push in the anchor cable hole; Described anchoring anchor cable is broken anchor cable at anchor cable aperture place, and the outside steel strand after breaking are divided into some groups, the lockset of the selected corresponding taper angle of maximum working load that can bear according to the design steel strand; Be connected with drift angle anchor pole 2 through limit lockset 3 towards different directions; Be connected with the steel strand of other anchoring anchor cable through middle lockset 7, between steel strand and coal and rock, install deformation block 8, simultaneously the steel strand of all directions are carried out pretension with tensioning equipment; After reaching the setting pretightning force central straight steel strand are cut off apart from a distance, aperture, the sensor that is used for nondestructive testing instrument 10 that can monitor the anchorage cable anchoring state is installed on the central straight steel strand; Repeat above-mentioned steps and accomplish the supporting of portion of group; The anchor pole in tunnel connects the four-dimensional supporting of the as a whole realization of tractive through the steel strand of anchoring anchor cable; About hysteresis heading end 15m according to field condition by single or three the flower or the five figured cloth modes of putting beat the pressure relief vent 9 of the certain pore size and the degree of depth; Between guard aperture bowl lock 6 and the middle lockset 7 connect steel strand and can when roadway surrounding rock generation large deformation, stretch automatically; And keep constant work frictional resistance, and absorb the country rock energy through constant resistance and large deformation, can under country rock large deformation condition, still have support action preferably.
Claims (6)
1. the four-dimensional suspension device of the indeterminate erosion control in a tunnel; Comprise according to the anchoring anchor cable that is arranged on lane top, lane group or base plate of certain rule array distribution and be arranged on the anchor pole of top, lane, lane group or base plate; It is characterized in that: the anchoring anchor cable is provided with guard aperture bowl lock at place, anchor cable hole; Described anchoring anchor cable exposes anchor cable in the tunnel and breaks and be some groups of steel strand; Described steel strand are connected the perhaps steel strand connection of anchoring anchor cable to different directions through lockset with adjacent anchor pole, be provided with deformation block between described steel strand and the coal and rock surface.
2. the four-dimensional suspension device of the indeterminate erosion control in tunnel according to claim 1, it is characterized in that: the central straight steel strand of described anchoring anchor cable are provided with the sensor that is used for nondestructive testing instrument.
3. the four-dimensional suspension device of the indeterminate erosion control in tunnel according to claim 1; It is characterized in that: described lockset comprises lock collar, taper pintle hook lock, volute spring and catch; Symmetry has bellmouth on the lock collar, puts into the taper pintle hook lock in the bellmouth, and there is volute spring on taper pintle hook lock afterbody top; The volute spring afterbody is provided with catch, and the bellmouth arranged outside is useful on the pin of regulating taper pintle hook lock taper angle.
4. the four-dimensional suspension device of the indeterminate erosion control in tunnel according to claim 1 is characterized in that: described deformation block can be according to the different colors that change of stressing conditions.
5. the supporting method of the four-dimensional suspension device of the indeterminate erosion control in tunnel is characterized in that: after the tunnelling, under the protection of temporary lining; At first set, install the middle anchor pole (1) in centre position, top, lane, next sets, installs top, lane and the drift angle anchor pole (2) at group drift angle place, lane, portion of group anchor pole (4), the drift angle anchor pole at base angle and the base plate anchor pole of base plate of lane group, beats the anchor cable hole along the vertical working surface direction at last; The anchoring agent of packing into; Stir anchoring anchor cable (5), the guard aperture bowl lock of the selected corresponding taper angle of maximum working load that can bear according to the design anchor cable is inserted in anchoring anchor cable (5) to guard aperture bowl lock (6); And push in the anchor cable hole; Described anchoring anchor cable is broken anchor cable at anchor cable aperture place, and the outside steel strand after breaking are divided into some groups, the lockset of the selected corresponding taper angle of maximum working load that can bear according to the design steel strand; Be connected with drift angle anchor pole (2) through limit lockset (3) towards different directions; Lockset in crossing (7) is connected with the steel strand of other anchoring anchor cable, between steel strand and coal and rock, installs deformation block (8), simultaneously the steel strand of all directions is carried out pretension with tensioning equipment; After reaching the setting pretightning force central straight steel strand are cut off apart from a distance, aperture, the sensor that is used for nondestructive testing instrument (10) that can monitor anchoring anchor cable state is installed on the central straight steel strand; Repeat above-mentioned steps and accomplish the supporting of portion of group, the anchor pole in tunnel is as a whole through the steel strand connection tractive of anchoring anchor cable.
6. the supporting method of the four-dimensional suspension device of the indeterminate erosion control in tunnel according to claim 5 is characterized in that: beat the pressure relief vent (9) of the certain pore size and the degree of depth according to field condition by single or three flowers or the five figured cloth modes of putting about hysteresis heading end 15m.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352707A (en) * | 2013-07-19 | 2013-10-16 | 山西潞安环保能源开发股份有限公司常村煤矿 | Multi-dimensional and multistage supporting method |
| CN103742177A (en) * | 2013-12-30 | 2014-04-23 | 北京科技大学 | Design method for strong mine pressure roadway support |
| CN104594928A (en) * | 2014-12-31 | 2015-05-06 | 中国矿业大学 | Four-dimensional support large deformation anchor rod |
| CN105275486A (en) * | 2015-11-09 | 2016-01-27 | 中国矿业大学(北京) | Anchor pole and rope combined strutted structure and construction method thereof |
| CN107420117A (en) * | 2017-07-18 | 2017-12-01 | 济宁学院 | A kind of coal mine roadway supporting attachment means |
| CN109268047A (en) * | 2018-11-01 | 2019-01-25 | 天地科技股份有限公司 | Laminated structure and method are unloaded in a kind of supporting in bump tunnel |
| CN109487786A (en) * | 2018-11-30 | 2019-03-19 | 中国建筑第七工程局有限公司 | A kind of novel large deformation anchor cable component |
| CN112267905A (en) * | 2020-10-23 | 2021-01-26 | 中南大学 | Rock mass embedded truss support structure for roof surrounding rock reinforcement and mounting method thereof |
| CN113339029A (en) * | 2021-06-15 | 2021-09-03 | 山东科技大学 | Anchor cable and channel steel beam cross-connection combined integral roof supporting structure and method through annular connecting disc |
| CN113897956A (en) * | 2021-11-02 | 2022-01-07 | 安徽恒聚精密机械有限公司 | Assembled damping yielding anchor and construction method |
| CN114542149A (en) * | 2022-04-27 | 2022-05-27 | 中国矿业大学 | Underground roadway rock burst prevention supporting anchor cable |
| CN114934800A (en) * | 2022-07-26 | 2022-08-23 | 华北科技学院(中国煤矿安全技术培训中心) | Spring lock type constant-resistance energy-absorbing anchor cable and use method thereof |
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| CN103352707B (en) * | 2013-07-19 | 2015-12-02 | 山西潞安环保能源开发股份有限公司常村煤矿 | A kind of multidimensional multistage support method |
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| CN103742177A (en) * | 2013-12-30 | 2014-04-23 | 北京科技大学 | Design method for strong mine pressure roadway support |
| CN103742177B (en) * | 2013-12-30 | 2016-03-02 | 北京科技大学 | Design method for strong mine pressure roadway support |
| CN104594928A (en) * | 2014-12-31 | 2015-05-06 | 中国矿业大学 | Four-dimensional support large deformation anchor rod |
| CN105275486A (en) * | 2015-11-09 | 2016-01-27 | 中国矿业大学(北京) | Anchor pole and rope combined strutted structure and construction method thereof |
| CN105275486B (en) * | 2015-11-09 | 2017-12-22 | 中国矿业大学(北京) | A kind of anchor shaft anchor cable combined support structure and its construction method |
| CN107420117B (en) * | 2017-07-18 | 2023-07-18 | 济宁学院 | Supporting and connecting device for coal mine tunnel |
| CN107420117A (en) * | 2017-07-18 | 2017-12-01 | 济宁学院 | A kind of coal mine roadway supporting attachment means |
| CN109268047A (en) * | 2018-11-01 | 2019-01-25 | 天地科技股份有限公司 | Laminated structure and method are unloaded in a kind of supporting in bump tunnel |
| CN109487786A (en) * | 2018-11-30 | 2019-03-19 | 中国建筑第七工程局有限公司 | A kind of novel large deformation anchor cable component |
| CN112267905A (en) * | 2020-10-23 | 2021-01-26 | 中南大学 | Rock mass embedded truss support structure for roof surrounding rock reinforcement and mounting method thereof |
| CN113339029A (en) * | 2021-06-15 | 2021-09-03 | 山东科技大学 | Anchor cable and channel steel beam cross-connection combined integral roof supporting structure and method through annular connecting disc |
| CN113897956A (en) * | 2021-11-02 | 2022-01-07 | 安徽恒聚精密机械有限公司 | Assembled damping yielding anchor and construction method |
| CN114542149A (en) * | 2022-04-27 | 2022-05-27 | 中国矿业大学 | Underground roadway rock burst prevention supporting anchor cable |
| CN114934800A (en) * | 2022-07-26 | 2022-08-23 | 华北科技学院(中国煤矿安全技术培训中心) | Spring lock type constant-resistance energy-absorbing anchor cable and use method thereof |
| CN114934800B (en) * | 2022-07-26 | 2022-10-04 | 华北科技学院(中国煤矿安全技术培训中心) | Spring lock type constant-resistance energy-absorbing anchor cable and use method thereof |
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