CN110259495A - A kind of compound support method based on erosion control decompression anchor cable - Google Patents
A kind of compound support method based on erosion control decompression anchor cable Download PDFInfo
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- CN110259495A CN110259495A CN201910593308.4A CN201910593308A CN110259495A CN 110259495 A CN110259495 A CN 110259495A CN 201910593308 A CN201910593308 A CN 201910593308A CN 110259495 A CN110259495 A CN 110259495A
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- country rock
- anchor cable
- erosion control
- pallet
- resistance
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- 230000003628 erosive effect Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000006837 decompression Effects 0.000 title claims abstract description 16
- 150000001875 compounds Chemical class 0.000 title claims abstract description 14
- 239000011435 rock Substances 0.000 claims abstract description 102
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 238000003780 insertion Methods 0.000 claims abstract description 5
- 230000037431 insertion Effects 0.000 claims abstract description 5
- 238000007569 slipcasting Methods 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000011378 shotcrete Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 239000003245 coal Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
Abstract
The invention discloses a kind of compound support methods based on erosion control decompression anchor cable, including country rock, uniformly insertion is equipped with anchor pole inside the country rock, described anchor pole one end is socketed with the first pallet, first pallet side is equipped with increasing resistance sleeve assembly, structure of the invention is scientific and reasonable, it is safe and convenient to use, it is provided with increasing resistance sleeve assembly, increase resistance sleeve under pressure, axial shrinkage, radial expansion, to to hole wall addition to pressure, and then it is gradually increased the frictional force of anchor cable device and hole wall also, improve the supporting power of device, realize secondary increasing resistance, when pressure from surrounding rock bearing capacity in parallel with resistance sleeve is increased more than constant-resistance relief spring, increasing resistance sleeve, deformation occurs, resistance relief spring continues to compress, realize second energy absorption and secondary pressure, cooperate deep injected hole, the effect of steel mesh and superficial part injected hole, make roadway surrounding rock Operating condition is fundamentally improved, and sufficiently improves the steady and bearing capacity certainly of country rock.
Description
Technical field
The present invention relates to Roadway Support Technology field, specially a kind of compound support method based on erosion control decompression anchor cable.
Background technique
With the increase of the mining depth and intensity of coal resources, the dynamic disasters such as impulsion pressure frequently occur further,
The safety in production of coal industry is seriously constrained, impulsion pressure refers in process of coal mining, the product under high-stress state
It is poly- have great number of elastic can coal or rock mass, mutate suddenly under certain conditions and destroy, inbreak or dish out, keep energy prominent
It is more tighter than general strata behaviors that apparent dynamic effect, the degrees of danger such as the sound, vibration and blast is presented in so release
Weight, can cause serious natural hazard, the tunnel after being impacted, surrounding geological environment is sufficiently complex, face in underground mining
To this high stress, the tunnel situation of large deformation, roadway support is all the problem in coal mining all the time, is especially rushed
Press the roadway support of influence with hitting, the mode of roadway support usually goes to consider in terms of two: first is that improving surrounding rock structure and its property
Can, second is that taking reasonable support technology；
Traditional roadway support is the bar for using single bolt-spary supports tunnel, and carrying out increase and anchor to the quantity of anchor pole
Body carries out overstriking, increases cost, and the inadaptable tunnel in the case where the high stress thump of deep carries out supporting, so
It is badly in need of a kind of compound support method based on erosion control decompression anchor cable to solve the above problems.
Summary of the invention
The present invention provides a kind of compound support method based on erosion control decompression anchor cable, can effectively solve above-mentioned background technique
It is middle to propose that traditional roadway support is the body of rod for using single bolt-spary supports tunnel, and carrying out increase and anchor to the quantity of anchor pole
Overstriking is carried out, increases cost, and be not suitable with the problem of supporting is carried out to the tunnel in the case where the high stress thump of deep.
To achieve the above object, described the invention provides the following technical scheme: a kind of erosion control depressurizes anchor cable, including country rock
Uniformly insertion is equipped with anchor pole inside country rock, and described anchor pole one end is socketed with the first pallet, and the anchor pole is adjacent with the first pallet
The second pallet is socketed at position, the anchor pole is equipped with constant-resistance relief spring, institute between the first pallet and the second pallet
It states the first pallet side and increasing resistance sleeve assembly is installed；
The increasing resistance sleeve assembly includes increasing resistance sleeve, thin segment, groove and heavy wall section；
First pallet side is equipped with increasing resistance sleeve, and the increasing resistance sleeve is located at the first pallet side and is provided with heavy wall
Section, the increasing resistance sleeve other side are provided with thin segment, are uniformly provided with groove at the thin segment port.
Preferably, it is connected between the anchor pole and country rock by nut check.
Preferably, the original state of the constant-resistance relief spring is in some compression, the constant-resistance relief spring
For a kind of component of 2 manganese material of 60 silicon.
Preferably, the increasing resistance sleeve lining is a kind of desk-top inner wall.
Preferably, the country rock edge is deeply internal offers deep injected hole, and the anchor pole one end is connected with reinforcing bar
Net offers superficial part injected hole after the country rock edge wall.
A kind of compound support method based on erosion control decompression anchor cable, comprises the following specific steps that,
S1, deep grouting and reinforcing: opening up deep injected hole, carries out grouting and reinforcing to country rock deep by deep injected hole；
S2, setting erosion control depressurize anchor cable: uniformly distributed erosion control depressurizes anchor cable inside to country rock；
S3, steel mesh shotcrete: fixed steel bars net, and to whitewashing inside it；
S4, secondary anchor note: opening up superficial part injected hole, by superficial part injected hole to carrying out secondary anchor note after country rock wall.
Preferably, in the step S1, deep injected hole is opened up, slip casting is carried out to country rock deep by deep injected hole and is added
Gu strengthening breaking surrounding rock by deep slip casting, wherein the characteristic of injecting paste material includes not drying shrinkage, rapid hardening, early strong and elasticity modulus
It is low, and guarantee some strength, when slip casting, according to the concrete condition of live country rock, slip casting hole depth, spacing and slip casting pressure are set
Power.
Preferably, in the step S2, anchor cable is depressurized to the uniformly distributed erosion control in country rock inside, wherein erosion control depressurizes anchor cable
It is made of anchor pole, nut, the first pallet, the second pallet, constant-resistance relief spring and increasing resistance sleeve assembly, wherein the body of rod of anchor pole
Diameter is adjusted selection according to pressure from surrounding rock size, and constant-resistance relief spring passes through selection according to the concrete condition of live country rock
Constant-resistance relief spring different geometric parameter adapts to different anchoring pretightning force and the different compressive strain amount that allows.
Preferably, in the step S3, fixed steel bars net, and to whitewashing inside it, the specific steps are that: pass through anchor
Bar passes through the mesh of steel mesh, and the two is attached fixation by nut and the first pallet, to steel mesh inside sprayed
Slurry reinforces surface layer rock mass, improves its globality, improves the power transmission between country rock and anchor cable.
Preferably, in the step S4, deep injected hole is opened up, by superficial part injected hole to carrying out secondary anchor after country rock wall
Note makes country rock superficial part obtain further filling reinforcing, further improves country rock globality and self-bearing capacity.
Compared with prior art, beneficial effects of the present invention: structure of the invention is scientific and reasonable, safe and convenient to use:
1, by the effect of deep injected hole, slip casting is carried out to country rock deep, strengthens breaking surrounding rock, is provided with anchor pole, is led to
The effect of nut is crossed, applies initial pretightening force for anchor pole, constant-resistance relief spring is in some compression at this time, thus to enclose
Rock provides the initial supporting power of constant-resistance, after pressure from surrounding rock supporting power initial more than constant-resistance, by compressing constant-resistance relief spring, so that
Country rock deforms therewith, realizes that primary energy is absorbed and once depressurized.
2, it is provided with increasing resistance sleeve assembly, when constant-resistance relief spring, which is reduced to, to be flushed with increasing resistance sleeve, cooperation increases resistance sleeve
Effect, make both jointly by constant-resistance relief spring and power, increase resistance sleeve under pressure, axial shrinkage, radial expansion,
Thus to hole wall addition to pressure, and then it is gradually increased the frictional force of anchor cable device and hole wall also, the supporting power of device is improved,
It realizes secondary increasing resistance, when pressure from surrounding rock bearing capacity in parallel with resistance sleeve is increased more than constant-resistance relief spring, increases resistance sleeve generation shape
Become, resistance relief spring continues to compress, and second energy absorption and secondary pressure is realized, to further increase the erosion control decompression of device
Ability, so that device is more safe and reliable.
3, by the effect of steel mesh, anchor pole and steel mesh are connected and fixed, to steel mesh inside whitewash, reinforce table
Layer rock mass, improves its globality, improves the power transmission between country rock and anchor cable, through the effect of superficial part injected hole, to after country rock wall
Secondary anchor note is carried out, makes country rock superficial part obtain further filling reinforcing, further improves country rock globality and self-bearing capacity, make
Roadway surrounding rock operating condition is fundamentally improved, sufficiently improve tunnel from steady and bearing capacity, reach science, safety, economy, effective
Control high stress tunnel deformation and prevention surrounding rock failure purpose.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
In the accompanying drawings:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of surrounding rock supporting of the present invention；
Fig. 3 is the main view that the present invention increases resistance sleeve；
Fig. 4 is the structural schematic diagram of the desk-top inner wall increasing resistance sleeve of the present invention；
Fig. 5 is the cross-sectional view in the present invention desk-top inner wall increasing resistance face sleeve main view A-A；
Fig. 6 is the structural schematic diagram of bevel-type inner wall increasing resistance sleeve of the present invention；
Fig. 7 is the cross-sectional view in the face main view A-A of bevel-type inner wall increasing resistance sleeve of the present invention；
Fig. 8 is compound support method flow chart of the present invention；
Figure label: 1, country rock；2, anchor pole；3, nut；4, the first pallet；5, the second pallet；6, constant-resistance relief spring；
7, increase resistance sleeve assembly；701, increase resistance sleeve；702, thin segment；703, groove；704, heavy wall section；
8, deep injected hole；9, steel mesh；10, superficial part injected hole.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1: as shown in Figure 1-3, the present invention provides a kind of technical solution, a kind of erosion control decompression anchor cable, including country rock
1, uniformly insertion is equipped with anchor pole 2 to 1 inside of country rock, and 2 one end of anchor pole is socketed with the first pallet 4, and anchor pole 2 is adjacent with the first pallet 4
The second pallet 5 is socketed at position, anchor pole 2 is equipped with constant-resistance relief spring 6, anchor between the first pallet 4 and the second pallet 5
By the locking connection of nut 3 between bar 2 and country rock 1, realization anchor pole 2 is connected and fixed with country rock 1.
When the device is made operational, anchor pole 2 is fixed by nut 3, and applies initial pretightening force by nut 3, this
When, constant-resistance relief spring 6 is in some compression, to provide constant-resistance initial supporting power for country rock 1, when country rock 1 receives punching
It when hitting, is supported first by the impact that initial supporting power receives country rock 1, when 1 pressure of country rock is more than the initial supporting of constant-resistance
After power, constant-resistance relief spring 6 compresses, so that country rock 1 deforms therewith, to realize that primary energy is absorbed and once depressurized.
In order to improve the buffering effect of device, 4 side of the first pallet is equipped with increasing resistance sleeve assembly 7, increases resistance sleeve assembly 7
Including increasing resistance sleeve 701, thin segment 702, groove 703 and heavy wall section 704,4 side of the first pallet is equipped with increasing resistance sleeve 701,
Increasing resistance sleeve 701 is located at 4 side of the first pallet and is provided with heavy wall section 704, increases resistance 701 other side of sleeve and is provided with thin segment 702,
Thin segment is uniformly provided with groove 703 at 702 port, for the ease of adapting to different anchoring pretightning force and the different buckling that allows
Shape amount, the original state of constant-resistance relief spring 6 are in some compression, and constant-resistance relief spring 6 is a kind of 2 manganese material of 60 silicon
Component.
As illustrated in figures 4-5, increasing resistance 701 inner wall of sleeve is a kind of desk-top inner wall, is hindered when constant-resistance relief spring 6 is compressed to increasing
701 end of sleeve flushes, at this time the common stress of both constant-resistance relief spring 6 and increasing resistance sleeve 701, increases resistance sleeve 701 in pressure
Under effect, axial shrinkage, radial expansion to apply normal pressure to constant-resistance relief spring 6 and borehole wall, and then makes anchor cable
The frictional force of device and hole wall is also gradually increased, and improves supporting power, realizes secondary increasing resistance, wherein thin segment 702 passes through groove
703 weaken, can certain pressure effect under buckling, pressure is buffered, at the same constant-resistance relief spring 6 be increase resistance sleeve 701
Radial pressure is provided, sleeve stress is improved, when the impact force that country rock 1 receives is more than constant-resistance relief spring 6 and increases resistance sleeve 701 simultaneously
When joining bearing capacity, increasing resistance sleeve 701, deformation occurs, so that constant-resistance relief spring 6 continues to compress, to realize that second energy absorbs
And secondary pressure.
In order to improve the protection effect of country rock 1,1 edge of country rock is deeply internal to offer deep injected hole 8,2 one end of anchor pole
Portion is connected with steel mesh 9, offers superficial part injected hole 10 after 1 edge wall of country rock.
Embodiment 2: as shown in Fig. 1-5 and 8, a kind of erosion control decompression anchor cable, including country rock 1,1 inside of country rock uniformly pacify by insertion
Equipped with anchor pole 2,2 one end of anchor pole is socketed with the first pallet 4, and anchor pole 2 and 4 adjacent position of the first pallet are socketed with the second pallet 5,
Anchor pole 2 is equipped with constant-resistance relief spring 6 between the first pallet 4 and the second pallet 5, passes through nut between anchor pole 2 and country rock 1
3 locking connections, realization anchor pole 2 are connected and fixed with country rock 1.
When the device is made operational, anchor pole 2 is fixed by nut 3, and applies initial pretightening force by nut 3, this
When, constant-resistance relief spring 6 is in some compression, to provide constant-resistance initial supporting power for country rock 1, when country rock 1 receives punching
It when hitting, is supported first by the impact that initial supporting power receives country rock 1, when 1 pressure of country rock is more than the initial supporting of constant-resistance
After power, constant-resistance relief spring 6 compresses, so that country rock 1 deforms therewith, thus realize that primary energy is absorbed and once depressurized,
In order to improve the buffering effect of device, 4 side of the first pallet is equipped with increasing resistance sleeve assembly 7, increases resistance sleeve assembly 7
Including increasing resistance sleeve 701, thin segment 702, groove 703 and heavy wall section 704,4 side of the first pallet is equipped with increasing resistance sleeve 701,
Increasing resistance sleeve 701 is located at 4 side of the first pallet and is provided with heavy wall section 704, increases resistance 701 other side of sleeve and is provided with thin segment 702,
Thin segment is uniformly provided with groove 703 at 702 port, for the ease of adapting to different anchoring pretightning force and the different buckling that allows
Shape amount, the original state of constant-resistance relief spring 6 are in some compression, and constant-resistance relief spring 6 is a kind of 2 manganese material of 60 silicon
Component.
As illustrated in figures 4-5, increasing resistance 701 inner wall of sleeve is a kind of desk-top inner wall, makes to increase resistance sleeve 701 by desk-top inner wall
It is divided into thin segment 702 and heavy wall section 704, is flushed when constant-resistance relief spring 6 is compressed to increasing resistance 701 end of sleeve, at this time constant-resistance
The common stress of both relief spring 6 and increasing resistance sleeve 701, increases resistance sleeve 701 under pressure, axial shrinkage, radial expansion,
To apply normal pressure to constant-resistance relief spring 6 and borehole wall, and then make the frictional force of anchor cable device and hole wall also gradually
Increase, improve supporting power, realizes secondary increasing resistance, while constant-resistance relief spring 6 is to increase resistance sleeve 701 to provide radial pressure, is improved
Sleeve stress increases resistance set when the impact force that country rock 1 receives is more than constant-resistance relief spring 6 and increases resistance 701 bearing capacity in parallel of sleeve
Deformation occurs for cylinder 701, so that constant-resistance relief spring 6 continues to compress, to realize second energy absorption and secondary pressure.
In order to improve the protection effect of country rock 1,1 edge of country rock is deeply internal to offer deep injected hole 8,2 one end of anchor pole
Portion is connected with steel mesh 9, offers superficial part injected hole 10 after 1 edge wall of country rock.
A kind of compound support method based on erosion control decompression anchor cable, comprises the following specific steps that,
S1, deep grouting and reinforcing: opening up deep injected hole 8, carries out slip casting to 1 deep of country rock by deep injected hole 8 and adds
Gu；
S2, setting erosion control depressurize anchor cable: depressurizing anchor cable to the 1 uniformly distributed erosion control in inside of country rock；
S3,9 shotcrete of steel mesh: fixed steel bars net 9, and to whitewashing inside it；
S4, secondary anchor note: opening up superficial part injected hole 10, by superficial part injected hole 10 to carrying out secondary anchor note after 1 wall of country rock.
In step S1, deep injected hole 8 is opened up, grouting and reinforcing is carried out to 1 deep of country rock by deep injected hole 8, is passed through
Breaking surrounding rock 1 is strengthened in deep slip casting, wherein and the characteristic of injecting paste material is low including not drying shrinkage, rapid hardening, early strong and elasticity modulus, and
Guarantee some strength, when slip casting, according to the concrete condition of live country rock 1, slip casting hole depth, spacing and grouting pressure are set.
In step S2, anchor cable is depressurized to the 1 uniformly distributed erosion control in inside of country rock, wherein erosion control depressurizes anchor cable by anchor pole 2, spiral shell
Female 3, first pallet 4, the second pallet 5, constant-resistance relief spring 6 and increasing resistance sleeve assembly 7 are constituted, wherein the body of rod of anchor pole 2 is straight
Diameter is adjusted selection according to 1 pressure size of country rock, and constant-resistance relief spring 6 passes through choosing according to the concrete condition of live country rock 1
6 different geometric parameter of constant-resistance relief spring is selected, different anchoring pretightning force and the different compressive strain amount that allows are adapted to.
In step S3, fixed steel bars net 9, and to whitewashing inside it, the specific steps are that: steel is passed through by anchor pole 2
The mesh of muscle net 9, and the two is attached by fixation by nut 3 and the first pallet 4, to steel mesh 9 inside whitewash, add
Gu surface layer rock mass improves its globality, improve the power transmission between country rock 1 and anchor cable.
In step S4, deep injected hole 8 is opened up, by superficial part injected hole 10 to secondary anchor note is carried out after 1 wall of country rock, makes to enclose
1 superficial part of rock is obtained further filling and be reinforced, and further improves 1 globality of country rock and self-bearing capacity.
By anchor pole 2, constant-resistance relief spring 6, increase resistance sleeve assembly 7, deep injected hole 8, steel mesh 9 and superficial part injected hole
10 effect is fundamentally improved 1 operating condition of roadway surrounding rock, sufficiently improves the steady and bearing capacity certainly in tunnel, reaches science, peace
Entirely, the purpose of the economical and effective deformation of control high stress tunnel and prevention roadway damage.
Embodiment 3: as shown in fig. 6-7, increasing resistance sleeve 701 can also be a kind of bevel-type inner wall, to increase by cone tank and hinder
Sleeve 701 divides for thin segment 702 and heavy wall section 704, when constant-resistance relief spring 6 is compressed to and is increased resistance 701 end of sleeve and is flushed, this
When constant-resistance relief spring 6 and increase the common stress of both resistance sleeves 701, increase resistance sleeve 701 under pressure, axial shrinkage, diameter
To extension, to apply normal pressure to constant-resistance relief spring 6 and borehole wall, and then make the frictional force of anchor cable device and hole wall
Also it is gradually increased, improves supporting power, realize secondary increasing resistance, wherein thin segment 702 is weakened by groove 703, can be in certain pressure
Lower buckling is acted on, pressure is buffered, while constant-resistance relief spring 6 is to increase resistance sleeve 701 to provide radial pressure, improves sleeve
Stress increases resistance sleeve when the impact force that country rock 1 receives is more than constant-resistance relief spring 6 and increases resistance 701 bearing capacity in parallel of sleeve
701 deformation occurs, so that constant-resistance relief spring 6 continues to compress, to realize that second energy absorbs and secondary pressure.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely preferred embodiment of the invention, to the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, for those skilled in the art, still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of erosion control depressurizes anchor cable, including country rock, it is characterised in that: uniformly insertion is equipped with anchor pole inside the country rock, institute
It states anchor pole one end and is socketed with the first pallet, the anchor pole and the first pallet adjacent position are socketed with the second pallet, the anchor pole
Constant-resistance relief spring is installed between the first pallet and the second pallet, first pallet side is equipped with increasing resistance sleeve group
Part；
The increasing resistance sleeve assembly includes increasing resistance sleeve, thin segment, groove and heavy wall section；
First pallet side is equipped with increasing resistance sleeve, and the increasing resistance sleeve is located at the first pallet side and is provided with heavy wall section,
The increasing resistance sleeve other side is provided with thin segment, is uniformly provided with groove at the thin segment port.
2. a kind of erosion control according to claim 1 depressurizes anchor cable, it is characterised in that: pass through spiral shell between the anchor pole and country rock
Mother's locking connection.
3. a kind of erosion control according to claim 1 depressurizes anchor cable, it is characterised in that: the initial shape of the constant-resistance relief spring
State is in some compression, and the constant-resistance relief spring is a kind of component of 2 manganese material of 60 silicon.
4. a kind of erosion control according to claim 1 depressurizes anchor cable, it is characterised in that: the increasing resistance sleeve lining is a kind of
Formula inner wall.
5. a kind of erosion control according to claim 1 depressurizes anchor cable, it is characterised in that: the country rock edge is deeply internal to be opened up
There is deep injected hole, the anchor pole one end is connected with steel mesh, offers superficial part injected hole after the country rock edge wall.
6. a kind of compound support method based on erosion control decompression anchor cable, feature described in -5 any one according to claim 1
It is: comprises the following specific steps that,
S1, deep grouting and reinforcing: opening up deep injected hole, carries out grouting and reinforcing to country rock deep by deep injected hole；
S2, setting erosion control depressurize anchor cable: uniformly distributed erosion control depressurizes anchor cable inside to country rock；
S3, steel mesh shotcrete: fixed steel bars net, and to whitewashing inside it；
S4, secondary anchor note: opening up superficial part injected hole, by superficial part injected hole to carrying out secondary anchor note after country rock wall.
7. a kind of compound support method based on erosion control decompression anchor cable according to claim 6, it is characterised in that: the step
In rapid S1, deep injected hole is opened up, grouting and reinforcing is carried out to country rock deep by deep injected hole, is strengthened by deep slip casting broken
Broken country rock, wherein the characteristic of injecting paste material is low including not drying shrinkage, rapid hardening, early strong and elasticity modulus, and guarantees some strength, note
When slurry, according to the concrete condition of live country rock, slip casting hole depth, spacing and grouting pressure are set.
8. a kind of compound support method based on erosion control decompression anchor cable according to claim 6, it is characterised in that: the step
In rapid S2, to country rock inside uniformly distributed erosion control depressurize anchor cable, wherein erosion control depressurize anchor cable by anchor pole, nut, the first pallet,
Second pallet, constant-resistance relief spring and increasing resistance sleeve assembly are constituted, wherein the shank diameter of anchor pole, according to pressure from surrounding rock size
It is adjusted selection, constant-resistance relief spring passes through selection constant-resistance relief spring difference geometry according to the concrete condition of live country rock
Parameter adapts to different anchoring pretightning force and the different compressive strain amount that allows.
9. a kind of compound support method of erosion control decompression anchor cable according to claim 6, it is characterised in that: the step S3
In, fixed steel bars net, and to whitewashing inside it, the specific steps are that: the mesh of steel mesh is passed through by anchor pole, and is passed through
The two is attached fixation by nut and the first pallet, to steel mesh inside whitewash, reinforce surface layer rock mass, improve its entirety
Property, improve the power transmission between country rock and anchor cable.
10. a kind of compound support method based on erosion control decompression anchor cable according to claim 6, it is characterised in that: described
In step S4, open up deep injected hole, by superficial part injected hole to secondary anchor note is carried out after country rock wall, make country rock superficial part obtain into
The filling of one step is reinforced, and country rock globality and self-bearing capacity are further improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910593308.4A CN110259495A (en) | 2019-07-03 | 2019-07-03 | A kind of compound support method based on erosion control decompression anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910593308.4A CN110259495A (en) | 2019-07-03 | 2019-07-03 | A kind of compound support method based on erosion control decompression anchor cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110259495A true CN110259495A (en) | 2019-09-20 |
Family
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| CN111456784A (en) * | 2020-04-20 | 2020-07-28 | 北京中矿创新联盟能源环境科学研究院 | Constant-resistance anchor cable structure and anchoring method |
| CN114517702A (en) * | 2022-02-23 | 2022-05-20 | 中国矿业大学 | Circulating type energy-absorbing yielding large-deformation anchoring device and using method thereof |
| 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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| CN111456784A (en) * | 2020-04-20 | 2020-07-28 | 北京中矿创新联盟能源环境科学研究院 | Constant-resistance anchor cable structure and anchoring method |
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| CN114517702A (en) * | 2022-02-23 | 2022-05-20 | 中国矿业大学 | Circulating type energy-absorbing yielding large-deformation anchoring device and using method thereof |
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| 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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