CN109339835A - A kind of anchoring system and underground engineering construction method - Google Patents
A kind of anchoring system and underground engineering construction method Download PDFInfo
- Publication number
- CN109339835A CN109339835A CN201811326790.7A CN201811326790A CN109339835A CN 109339835 A CN109339835 A CN 109339835A CN 201811326790 A CN201811326790 A CN 201811326790A CN 109339835 A CN109339835 A CN 109339835A
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- anchoring system
- anchorage
- backing plate
- aperture
- porous backing
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- 238000004873 anchoring Methods 0.000 title claims abstract description 97
- 238000010276 construction Methods 0.000 title claims abstract description 40
- 239000011435 rock Substances 0.000 claims abstract description 64
- 238000009412 basement excavation Methods 0.000 claims abstract description 22
- 238000005728 strengthening Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 210000005069 ears Anatomy 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- QLMNCUHSDAGQGT-UHFFFAOYSA-N sintofen Chemical compound N1=C(C(O)=O)C(=O)C=2C(OCCOC)=CC=CC=2N1C1=CC=C(Cl)C=C1 QLMNCUHSDAGQGT-UHFFFAOYSA-N 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000009798 Shen-Fu Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D13/00—Large underground chambers; Methods or apparatus for making them
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to underground chamber construction supporting fields, and in particular to a kind of anchoring system and underground engineering construction method.The underground construction method uses a kind of anchoring system, the anchoring system includes the first anchoring system for instant supporting, with the second anchoring system for later period strengthening supporting, first anchoring system includes the first anchorage and porous backing plate, and the second anchoring system includes the second anchorage added on the basis of the first anchoring system；Adjacent porous backing plate is locally overlapping, and the first anchorage and the second anchorage respectively correspond the aperture on porous backing plate and be staggered, and the first anchorage protrudes into the length of rock mass less than the second anchorage.Anchoring system of the invention is suitable for the first branch the case where performing limited space during partial excavation, does not allow vulnerable, and anchoring system connecting is good, and supporting power is incremented by gradually；Excavated surface, preliminary bracing face and the later period branch mask of construction method promote in proper order, can guarantee place safety, shorten digging time, accelerate construction progress.
Description
Technical field
The present invention relates to underground chamber construction supporting fields, apply in particular to a kind of anchoring system and underground engineering
Work method.
Background technique
Under the conditions of high-ground stress and weak broken wall rock, after underground chamber excavates, surrouding rock deformation is fast and deflection is big, if
Anchor pole or cable bolting are used immediately, are easily influenced the failure for leading to anchoring system, and anchor pole or cable bolting by large deformation
Construction time is long, it is difficult to which instant supporting country rock influences to continue to excavate, construction speed is slow.
Summary of the invention
The present invention is intended to provide a kind of anchoring system, for solving high-ground stress and weak surrounding rock condition in the prior art
Under, anchoring system is easy failure, and long the time required to supporting, excavation off time is long, the slow problem of construction speed.
Another object of the present invention is to provide a kind of underground engineering construction methods to be guaranteed using above-mentioned anchoring system
Under the conditions of high-ground stress and weak surrounding rock, guarantee construction site safety, shorten the off time of excavated section, quickening construct into
Degree.
The embodiment of the present invention is achieved in that
The embodiment of the present invention provides a kind of anchoring system comprising for the first anchoring system of instant supporting, and is used for
Second anchoring system of later period strengthening supporting, first anchoring system include the first anchorage and porous backing plate, second anchor
Solid system includes the second anchorage added on the basis of the first anchoring system；
The adjacent porous backing plate is locally overlapping, and first anchorage and second anchorage respectively correspond described porous
It aperture on backing plate and is staggered, the length that first anchorage protrudes into rock mass is less than second anchorage.
This anchoring system includes the first anchoring system and the second anchoring system, is beaten immediately in section country rock after section excavation
Enter the first anchorage, and be set between the first anchorage and rock mass using porous backing plate, using overlapping porous backing plate by multiple
As soon as anchorage integrates, squeezes into a small amount of anchorage and form the stronger system of anchoring ability, and the first anchoring body is being set
Certain prestressing force can be applied to the first anchorage when being and accelerate the speed and branch of instant supporting to promote the bearing capacity of country rock
Intensity is protected, to protect construction site safe, shortens the off time of excavation, conveniently continues section excavation, accelerate construction
Progress；
Strengthening supporting is carried out after the release of rock mass internal pressure, rock mass deformation are stablized, then to country rock, by the second anchorage from corresponding
Rock mass is squeezed into second aperture, and the length of the second anchorage is greater than the length of the first anchorage, and the second anchorage further gos deep into rock stratum, with the
One anchoring system integrates the second anchoring system to be formed and take into account deep layer anchoring and shallow-layer anchoring, to having released internal pressure
The country rock strengthening supporting to tend towards stability plays the role of firm rock mass, the deformation of prevention and treatment later period.
The present invention combines single anchorage by backing plate and forms connection by the first anchoring system of setting and the second anchoring system
Dynamic anchor system, under the conditions of solving high-ground stress in the prior art and weak surrounding rock, anchoring system is easy failure, and supporting is taken
Between it is long, excavate off time it is long, the slow problem of construction speed.
In an embodiment of the present invention, further, described in order to properly increase the anchor force of the first anchoring system
The apertures in alignment of porous backing plate overlap position.
In an embodiment of the present invention, further, the porous backing plate close to rock mass one side setting it is fluted,
It is correspondingly arranged on raised line on one side away from rock mass, the raised line at the overlapping position of the adjacent porous backing plate is matched with the groove
It closes, to limit the adjacent porous backing plate Relative sliding.
In an embodiment of the present invention, further, the porous backing plate is in bar shaped, and the aperture includes that interval is set
The first aperture and the second aperture set, first anchorage are correspondingly arranged in first aperture, and the second anchorage correspondence is set
The length that second aperture, first aperture and second aperture are placed in along the porous backing plate is arranged in a word interval
Column.
In an embodiment of the present invention, further, first aperture than second aperture quantity more than one
A, first aperture is located at the both ends of the porous backing plate of bar shaped, and the end of the adjacent porous backing plate overlaps and institute
State the first apertures in alignment.
In an embodiment of the present invention, further, first anchorage includes pressure-relieving achor bar, second anchorage
Including anchor cable.
In an embodiment of the present invention, further, first anchorage, second anchorage and the porous pad
It is separately provided for preventing the pad hoop of sliding between plate, first anchorage and second anchorage are equipped with for accommodating
The annular groove of pad hoop is stated, the pad hoop is split ring, and ears and monaural, the monaural is circumferentially respectively set in opening position both sides
It can slide to change the diameter that the pad is bound round along the ears.
In an embodiment of the present invention, further, the porous backing plate includes L shape, the L-shaped porous backing plate
It is closed with palisades, the rock topstick of section, aperture is respectively set in the turning point both sides of the L-shaped backing plate.
In an embodiment of the present invention, further, first anchoring system further includes being set to rock mass and institute
The first concrete layer between porous backing plate is stated, second anchoring system further includes being fixed on first anchorage and described
Steel mesh between two anchorages, the reinforcing bar net surface are provided with the second concrete layer, and second concrete layer is mixed for fiber
Solidifying soil.
A kind of underground engineering construction method comprising excavate excavated surface, the initial stage branch that direction successively promotes in proper order in edge
Mask and later period branch mask, the section that the excavated surface excavates out use the above-mentioned instant supporting of the first anchoring system, to
The second above-mentioned anchoring system strengthening supporting is used after section adjoining rock stability.
The excavation work that underground engineering construction method provided by the invention is successively promoted by setting along excavation direction in proper order
Face, preliminary bracing face and later period branch mask come guarantee construction site safety, shorten excavate off time.Have first by setting
The preliminary bracing face of anchoring system and later period branch mask with the second anchoring system, the first anchoring system carry out after excavation
Instant supporting guarantees under the security situation of construction site, shortens and excavates off time, continues excavated section, and the second anchoring system exists
Reinforcing, control efficiency, excavated surface, preliminary bracing face and later period branch mask, these three working face edges are played after adjoining rock stability
It excavates direction to promote in proper order, can guarantee construction site safety under the conditions of high-ground stress and weak surrounding rock, shorten excavated section
Off time, accelerate construction progress.
The beneficial effect comprise that
The case where anchoring system provided by the invention performs limited space suitable for the first branch during partial excavation, makes
Single anchorage is combined by backing plate and forms linkage anchor system, under the conditions of solving high-ground stress in the prior art and weak surrounding rock,
Anchoring system is easy failure, long the time required to supporting, and excavation off time is long, the slow problem of construction speed.
Underground engineering construction method provided by the invention, by be arranged have the first anchoring system preliminary bracing face and
Later period branch mask with the second anchoring system, the first anchoring system carry out instant supporting after excavation, guarantee construction site peace
In full situation, shorten and excavate off time, continue excavated section, the second anchoring system plays reinforcing, prevention and treatment after adjoining rock stability
Effect, excavated surface, preliminary bracing face and later period branch mask, these three working faces promote in proper order along direction is excavated, increase gradually
Add supporting power, anchoring system connecting is good, can guarantee construction site safety under the conditions of high-ground stress and weak surrounding rock, shorten
It the off time of excavated section, accelerates construction progress.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram in construction working face provided in an embodiment of the present invention.
Fig. 2 is the structural schematic diagram of anchoring system provided in an embodiment of the present invention；
Fig. 3 is the layout drawing of porous backing plate provided in an embodiment of the present invention；
Fig. 4 is the A-A sectional view of porous backing plate in Fig. 3；
Fig. 5 is a kind of mounting means schematic diagram of porous backing plate provided in an embodiment of the present invention；
Fig. 6 is another mounting means schematic diagram of porous backing plate provided in an embodiment of the present invention；
Fig. 7 is the another mounting means schematic diagram of porous backing plate provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of pad hoop provided in an embodiment of the present invention；
Fig. 9 is the B-B sectional view that hoop is padded in Fig. 8；
Icon: 1- excavated surface；The first concrete layer of 2-；The porous backing plate of 3-；The first anchorage of 4-；The second anchorage of 5-；6-
Second concrete layer；7- pad hoop；71- ears；72- monaural；The preliminary bracing face 8-；9- later period branch mask.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that if occur term " center ", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
Either the invention product using when the orientation or positional relationship usually put, be merely for convenience of the description present invention and simplification retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.If only being used in addition, occurring term " first ", " second " etc. in description of the invention
It is described in distinguishing, is not understood to indicate or imply relative importance.
If being not offered as requiring component absolute in addition, occurring the terms such as term "horizontal", "vertical" in description of the invention
Horizontal or pendency, but can be slightly tilted.If "horizontal" only refers to that its direction is more horizontal with respect to for "vertical", not
It is to indicate that the structure is had to fully horizontally, but can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, if there is term
" setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachably connect
It connects, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
Embodiment
A kind of underground engineering construction method under the conditions of guaranteeing high-ground stress and weak surrounding rock, guarantees construction site safety, contracting
It the off time of short excavated section, accelerates construction progress.
Above-mentioned underground engineering construction method includes excavation, preliminary bracing, later period supporting three process, and three process is sequential
It carries out, please refers to shown in attached drawing 1, excavated surface 1, preliminary bracing face 8 and later period branch mask 9 are simultaneously in the construction process simultaneously
In the presence of, and promoted in proper order along direction is excavated.
After section excavation goes out, the first anchoring system is set in Rock Mass immediately and is anchored immediately, preliminary bracing is formed
Face 8；After Stress relieving of surrounding rocks, the first anchoring system is reinforced, forms later period branch mask 9.Three working faces can carry out simultaneously
Construction operation, the first anchoring system is there are the surplus for allowing surrouding rock deformation, so that anchoring system is not easy damage inactivation, second
Anchoring system reinforces anchor force, is conducive to that Rock Mass is made to remain steady in a long-term.
Attached drawing 2 is please referred to, the first anchoring system includes the first anchorage 4 and porous backing plate 3.
Attached drawing 2 is please referred to, the second anchoring system includes the second anchorage 5 added on the basis of the first anchoring system.
It please refers to shown in attached drawing 2,5 length of the second anchorage is less than the first anchorage 4, and 4 installation speed of the first anchorage is faster.
It please refers to shown in attached drawing 1 and attached drawing 5, is provided with the first aperture and the second aperture on porous backing plate 3, wherein first opens
Hole is corresponding with the first anchorage 4, and the second aperture is corresponding with the second anchorage 5, the first aperture and the setting of the second aperture interval.
It should be noted that the difference of the first aperture and the second aperture is only that the area of its corresponding anchorage in the present invention
Not, it can be adjusted according to required initial stage anchor force.It please refers to shown in attached drawing 5, there are three apertures for the porous tool of backing plate 3, if needing
The initial stage anchor force wanted is larger, then the aperture at porous 3 both ends of backing plate is as the first aperture；If desired initial stage anchor force is smaller,
Then both ends with the porous backing plate 3 of the first aperture and middle part there is the backing plate transpostion interval of the first aperture to be arranged；If desired into one
Reduction initial stage anchor force is walked, then the first aperture of each porous backing plate 3 is respectively positioned on middle part.
After section excavation, the first concrete layer 2 first please be sprayed on Rock Mass surface, temporarily shown in Shenfu Fig. 1 and attached drawing 2
And firm rock mass.
Then, anchor hole is drilled through on rock mass, and the floating ash in anchor hole is cleaned out using high pressure blower, is then arranged first
Anchoring system carries out instant supporting.
Referring to shown in attached drawing 5, porous backing plate 3 is installed on rock mass surface, adjacent 3 part of porous backing plate is overlapping.
For the ease of installation, the orderly support system of framework, further, the porous backing plate 3 be in bar shaped, described first
Aperture and second aperture are arranged along the length of the porous backing plate 3 in a word interval.
Further, in order to keep the first anchoring system more firm, quantity of first aperture than second aperture
More one, first aperture is located at the both ends of the porous backing plate 3 of bar shaped.
Referring to shown in attached drawing 1, attached drawing 2 and attached drawing 5, the first anchorage 4 is squeezed into the corresponding anchor hole of the first aperture and is fixed, this reality
It applies the first anchorage 4 in example and uses anchor pole, in order to further function as the effect for preventing the first anchoring system from failing, first anchor
Tool 4 uses pressure-relieving achor bar.
The first above-mentioned anchoring system is arranged immediately after section excavation, using porous backing plate 3 be set to the first anchorage 4 with
Between rock mass, multiple first anchorages 4 are integrated using overlapping porous backing plate 3, a small amount of anchorage is squeezed into and just forms anchor
Gu the stronger system of ability, and certain prestressing force can be applied to the first anchorage 4 when the first anchoring system is arranged, to be promoted
The bearing capacity of country rock, accelerates the speed and supporting intensity of instant supporting, to protect construction site safe, shortens between excavation
The gap time, conveniently continue section excavation, accelerates construction progress.
Then, after the release of rock mass internal pressure, rock mass deformation are stablized, then the second anchor is added on the basis of the first anchoring system
Tool 5.It please refers to shown in attached drawing 5, there are three apertures for the porous tool of backing plate 3 in the present embodiment, wherein the first aperture is located at both ends, second
Aperture is located at centre, and porous backing plate 3 becomes one the first anchorage 4, the second anchorage 5, to carry out strengthening supporting to country rock.
Second anchorage 5 is squeezed into the corresponding anchor hole of the second aperture to fix.Attached drawing 2 is please referred to, the length of the second anchorage 5 is greater than
First anchorage 4, the second anchorage 5 further go deep into rock mass, integrated with the first anchoring system to be formed take into account deep layer anchoring and
Second anchoring system of shallow-layer anchoring plays firm rock mass, anti-to the country rock strengthening supporting for having released internal pressure and tending towards stability
Control the effect of later period deformation.The second anchorage 5 in the present embodiment uses anchor cable.
In order to further protect rock mass, long-term firm, prevention and treatment deformation effect is played, is please referred to shown in attached drawing 2, first
Steel mesh is fixedly installed between anchorage 4 and the second anchorage 5, steel mesh can be welded on the first anchorage 4 and the second anchorage 5, be led to
Steel mesh connection is crossed, the globality of the second anchoring system is reinforced, and anchoring, supporting power are promoted.
In order to preferably protect rock mass and support system, the second concrete layer 6 is sprayed in reinforcing bar net surface.In order to reinforce propping up
Watch box system tension, bending strength, the second concrete layer 6 use fiber concrete, and the toughness of fiber concrete body is strong, can be effective
Rock mass external crack is inhibited to carry out, in the case where concrete layer band crack works, durability is more preferable.
In order to enhance tension, the bending strength of support system the first concrete layer 2 and the second concrete layer 6, in fixed steel
Before muscle net, first the sticking carbon fiber item on the first concrete layer 2, is then arranged steel mesh, the second concrete layer 6 of injection again.
Please referring to attached drawing 1, attached drawing 2, shown in attached drawing 3, multiple end to end arrangements of the porous backing plates 3 are in strip group,
Multiple bar shaped groups are sequentially arranged along section excavation direction, form the skeleton of support palisades and rock top.Further, above-mentioned carbon fiber
It ties up item and porous 3 bar shaped group of backing plate forms reticular structure, to further enhance the globality of the second anchoring system, improve supporting
Ability.
In order to suitably enhance the anchor force of the first anchoring system, the apertures in alignment at the overlapping position of porous backing plate 3, i.e., as attached
Shown in Fig. 6, porous 3 overlapping length of backing plate increases, and the first apertures in alignment of two porous backing plates 3 squeezes into the first anchorage 4,
Satisfaction allow compressive strain surplus while, reinforce initial stage anchor force.
In rock mass weak part, the overlapping length of porous backing plate 3 can increase to reinforce initial stage anchor force or porous pad
Plate 3 can also reinforce initial stage anchor force using multiple while overlapping forms.Please refer to attached drawing 7, it is thin in rock mass in the present embodiment
Weak position is overlapping using three porous backing plates 3, and the first anchorage 4 is squeezed into first and opened by the first apertures in alignment of three porous backing plates 3
The corresponding anchor hole in hole is fixed.
For rock top and palisades delivery position, porous backing plate 3 is set as L shape, the L-shaped porous backing plate 3 and section
Palisades, rock topstick close, and the first aperture is respectively set in the turning point both sides of the L-shaped backing plate, thus to palisades and two, rock top
Face carries out initial stage anchoring respectively.
In order to further increase the attachment force of porous backing plate 3, prevents porous backing plate 3 from sliding, enhance the bending resistance of porous backing plate 3
Roll over effect, please refer to shown in attached drawing 4, the one side of porous backing plate 3 close to the rock mass be arranged it is fluted, faced away from the one of rock mass
It should be provided with raised line, the raised line and the groove at the overlapping position of the adjacent porous backing plate 3 cooperate, to limit adjacent
3 Relative sliding of porous backing plate causes to be staggered.
In order to further increase porous 3 antiskid ability of backing plate, preferably anchor, the groove and the raised line separate phase
Adjacent aperture, and around the aperture.
Further, in order to keep anchorage installation more secured, first anchorage 4, second anchorage 5 with it is described porous
It is separately provided for preventing the pad hoop 7 of sliding between backing plate 3, first anchorage 4 and second anchorage 5, which are equipped with, to be used for
Accommodate the annular groove of the pad hoop 7.
Attached drawing 8 and attached drawing 9 are please referred to, the pad hoop 7 is split ring, and ears 71 are circumferentially respectively set in opening position both sides
With monaural 72, the monaural 72 can slide to change the diameter of the pad hoop 7 along the ears 71.
Underground engineering construction method provided by the invention and anchoring system have the initial stage of the first anchoring system by being arranged
Branch mask 8 and later period branch mask 9 with the second anchoring system, the first anchoring system carry out instant supporting after excavation, guarantee
Under the security situation of construction site, shorten and excavate off time, continue excavated section, the second anchoring system plays after adjoining rock stability
It reinforces, control efficiency, excavated surface 1, preliminary bracing face 8 and later period branch mask 9, direction is excavated in proper order in these three working faces edge
It promotes, under the conditions of solving high-ground stress in the prior art and weak surrounding rock, anchoring system is easy failure, and place is dangerous, supporting
Required time is long, and excavation off time is long, the slow problem of construction speed.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of anchoring system, it is characterised in that: reinforce branch including the first anchoring system for instant supporting, and for the later period
Second anchoring system of shield, first anchoring system include the first anchorage and porous backing plate, and second anchoring system includes
The second anchorage added on the basis of the first anchoring system；
The adjacent porous backing plate is locally overlapping, and first anchorage and second anchorage respectively correspond the porous backing plate
On aperture and be staggered, first anchorage protrude into rock mass length be less than second anchorage.
2. a kind of anchoring system according to claim 1, it is characterised in that: the aperture pair of the porous backing plate overlap position
Together.
3. a kind of anchoring system according to claim 1, it is characterised in that: the porous backing plate is set on one side close to rock mass
It is equipped with groove, is correspondingly arranged on raised line, the raised line at the overlapping position of the adjacent porous backing plate and institute on one side away from rock mass
Groove cooperation is stated, to limit the adjacent porous backing plate Relative sliding.
4. a kind of anchoring system according to claim 1, it is characterised in that: the porous backing plate is in bar shaped, the aperture
Including spaced first aperture and the second aperture, first anchorage is correspondingly arranged in first aperture, and described second
Anchorage be correspondingly arranged in second aperture, first aperture and second aperture along the porous backing plate length in one
Word interval arrangement.
5. a kind of anchoring system according to claim 4, it is characterised in that: first aperture is than second aperture
Quantity is one more, and first aperture is located at the both ends of the porous backing plate of bar shaped, the end of the adjacent porous backing plate
Overlapping and described first apertures in alignment.
6. a kind of anchoring system according to claim 1, it is characterised in that: first anchorage includes pressure-relieving achor bar, institute
Stating the second anchorage includes anchor cable.
7. a kind of anchoring system according to claim 1, it is characterised in that: first anchorage, second anchorage with
It is separately provided for preventing the pad hoop of sliding between the porous backing plate, first anchorage and second anchorage are equipped with
For accommodating the annular groove of the pad hoop, the pad hoop is split ring, and ears and list are circumferentially respectively set in opening position both sides
Ear, the monaural can slide to change the diameter of the pad hoop along the ears.
8. a kind of anchoring system according to claim 1, it is characterised in that: the porous backing plate includes L shape, L-shaped institute
Palisades, the conjunction of rock topstick of porous backing plate and section are stated, aperture is respectively set in the turning point both sides of the L-shaped backing plate.
9. a kind of anchoring system according to claim 1, it is characterised in that: first anchoring system further includes being set to
The first concrete layer between rock mass and the porous backing plate, second anchoring system further include being fixed on first anchorage
Steel mesh between second anchorage, the reinforcing bar net surface are provided with the second concrete layer, second concrete layer
For fiber concrete.
10. a kind of underground engineering construction method, it is characterised in that: including the excavation work successively promoted in proper order along excavation direction
Face, preliminary bracing face and later period branch mask, the section that the excavated surface excavates out use claim 1-9 any one institute
The instant supporting of the first anchoring system stated uses the second anchor described in any one of claim 1-9 after section adjoining rock stability
Solid system strengthening supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811326790.7A CN109339835A (en) | 2018-11-08 | 2018-11-08 | A kind of anchoring system and underground engineering construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012769A (en) * | 2019-06-01 | 2020-12-01 | 中铁十四局集团第二工程有限公司 | Semi-rigid and semi-flexible anti-impact tunnel surrounding rock supporting structure under seismic belt and construction method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226407A (en) * | 2011-05-23 | 2011-10-26 | 中铁二院工程集团有限责任公司 | Four-line large-span tunnel cable-arch combined primary support structure |
| CN202323709U (en) * | 2011-09-21 | 2012-07-11 | 江苏大学 | Composite type anchor group for FRP (fiber reinforce plastic) ribs |
| CN202390751U (en) * | 2011-12-16 | 2012-08-22 | 中国水电顾问集团贵阳勘测设计研究院 | Round steel bar anchor rod structure for cableway |
| CN102937030A (en) * | 2012-11-26 | 2013-02-20 | 山东大学 | Bolting-grouting integrated support method for zonal disintegration of deep roadway surrounding rock |
| CN103075165A (en) * | 2013-01-10 | 2013-05-01 | 中国矿业大学(北京) | Composite supporting method of vertical beam of coal road |
| CN103939110A (en) * | 2014-05-07 | 2014-07-23 | 中铁第一勘察设计院集团有限公司 | Strengthening system for slight cracking of existing tunnel arch portion lining |
| CN203795298U (en) * | 2014-01-20 | 2014-08-27 | 安阳市公路管理局 | Clamping plate type external prestress steel cable anchoring device |
| CN106368721A (en) * | 2016-12-02 | 2017-02-01 | 西南交通大学 | Anti-rockburst supporting method in tunnel and anti-rockburst supporting system in tunnel |
| CN107190757A (en) * | 2017-07-27 | 2017-09-22 | 河北建科唐秦建筑科技有限公司 | The construction method and support system of recyclable system of deep foundation pit support can be assembled |
| CN107218069A (en) * | 2017-07-18 | 2017-09-29 | 陕西陕煤黄陵矿业有限公司 | A kind of back suspension device and method for protecting support |
| CN108194100A (en) * | 2017-12-21 | 2018-06-22 | 山东科技大学 | A kind of accurate three-dimensional prestress strengthening method of crack coal and rock |
| CN209339136U (en) * | 2018-11-08 | 2019-09-03 | 杭州图强工程材料有限公司 | A kind of anchoring system |
-
2018
- 2018-11-08 CN CN201811326790.7A patent/CN109339835A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226407A (en) * | 2011-05-23 | 2011-10-26 | 中铁二院工程集团有限责任公司 | Four-line large-span tunnel cable-arch combined primary support structure |
| CN202323709U (en) * | 2011-09-21 | 2012-07-11 | 江苏大学 | Composite type anchor group for FRP (fiber reinforce plastic) ribs |
| CN202390751U (en) * | 2011-12-16 | 2012-08-22 | 中国水电顾问集团贵阳勘测设计研究院 | Round steel bar anchor rod structure for cableway |
| CN102937030A (en) * | 2012-11-26 | 2013-02-20 | 山东大学 | Bolting-grouting integrated support method for zonal disintegration of deep roadway surrounding rock |
| CN103075165A (en) * | 2013-01-10 | 2013-05-01 | 中国矿业大学(北京) | Composite supporting method of vertical beam of coal road |
| CN203795298U (en) * | 2014-01-20 | 2014-08-27 | 安阳市公路管理局 | Clamping plate type external prestress steel cable anchoring device |
| CN103939110A (en) * | 2014-05-07 | 2014-07-23 | 中铁第一勘察设计院集团有限公司 | Strengthening system for slight cracking of existing tunnel arch portion lining |
| CN106368721A (en) * | 2016-12-02 | 2017-02-01 | 西南交通大学 | Anti-rockburst supporting method in tunnel and anti-rockburst supporting system in tunnel |
| CN107218069A (en) * | 2017-07-18 | 2017-09-29 | 陕西陕煤黄陵矿业有限公司 | A kind of back suspension device and method for protecting support |
| CN107190757A (en) * | 2017-07-27 | 2017-09-22 | 河北建科唐秦建筑科技有限公司 | The construction method and support system of recyclable system of deep foundation pit support can be assembled |
| CN108194100A (en) * | 2017-12-21 | 2018-06-22 | 山东科技大学 | A kind of accurate three-dimensional prestress strengthening method of crack coal and rock |
| CN209339136U (en) * | 2018-11-08 | 2019-09-03 | 杭州图强工程材料有限公司 | A kind of anchoring system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012769A (en) * | 2019-06-01 | 2020-12-01 | 中铁十四局集团第二工程有限公司 | Semi-rigid and semi-flexible anti-impact tunnel surrounding rock supporting structure under seismic belt and construction method thereof |
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