CN110030014A - A kind of Soft Rock Roadway Floor Heave allows pressure camber shell administering method - Google Patents
A kind of Soft Rock Roadway Floor Heave allows pressure camber shell administering method Download PDFInfo
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- CN110030014A CN110030014A CN201910204817.3A CN201910204817A CN110030014A CN 110030014 A CN110030014 A CN 110030014A CN 201910204817 A CN201910204817 A CN 201910204817A CN 110030014 A CN110030014 A CN 110030014A
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- camber
- camber shell
- shell structure
- rock
- bottom plate
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- 239000011435 rock Substances 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000012856 packing Methods 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 238000010009 beating Methods 0.000 claims description 4
- 230000001413 cellular effect Effects 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000011265 semifinished product Substances 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 230000008093 supporting effect Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 11
- 239000003245 coal Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 241001211590 Lanelater Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
It is allowed the invention discloses a kind of Soft Rock Roadway Floor Heave and presses camber shell administering method, step are as follows: back and two helps normal mounting anchor pole and anchor cable；Big bottom plate camber cross dimensions is brushed, reserves to allow and presses space；With the flexible packing material mixed, allow pressure space to be filled to pour to what is reserved；Pour hollow camber shell structure；Short fine and closely woven anchor pole is beaten on camber shell structure；Long anchor cable is beaten on camber shell structure.Soft Rock Roadway Floor Heave of the invention allows pressure camber shell administering method that yield supporting and camber shell structure are applied to bottom plate, to improve bottom plate superficial part Surrounding Rock Control effect, make full use of characteristics of surrounding rock, support efficiency is improved, the effect of soft-rock tunnel bottom plate supporting is improved, there is strong operability, roadway floor superficial part country rock can be improved, tunnel service life is further increased, repair of laneway workload can be reduced, improves coal mine working security.
Description
Technical field
The invention belongs to the technical fields of soft-rock tunnel floor rocks control more particularly to a kind of Soft Rock Roadway Floor Heave to allow pressure
Camber shell administering method.
Background technique
As coal mining is extended to deep, the increase of roadway excavation depth, roadway surrounding rock stress increases, and country rock is cashed out
Soft rock characteristic is further obvious, and roadway support difficulty increases.Soft-rock tunnel has deformation velocity fast, and deflection is big, deformation time is long
Country rock feature, for many years it was verified that for soft-rock tunnel, since country rock cementing properties is poor, Surrounding Rock Strength is low and rheological characteristic is stronger
Etc. features, deformation take a long time could stablize, so, from change superficial part surrounding rock structure, make superficial part country rock formation intensity height,
Thickness is thin, structural integrity supporting construction body, and can absorb part strain energy of distortion, reaches the mesh for lowering floor rocks stress
's.The advantages of shell structure has plate concurrently compared to beam simultaneously and encircle the advantages of comparing beam.The shell of certain forms, can be in various differences
Accomplish in shell that the internal force in most of region is along the film power of shell curved surface under the load effect of form, moment of flexure is zero or very
It is small.The horizontal thrust of support is only leaned on to work because reducing moment of flexure in encircleing, and the support in shell rim can provide various differences
The support of distribution, to reduce moment of flexure in shell, so the strength and stiffness of shell are high, shell is adaptive for different form load
Power is strong, material can be made to be fully used.So it is maximum so that tunnel superficial part country rock is formed shell structure superiority.
General Soft Rock Roadway Floor Heave administering method is reached by improving support rigidity, reducing country rock exposure duration mostly
To the purpose for preventing and slowing down surrouding rock deformation, effect is very unobvious.Therefore, support rigidity is improved merely, and " with rigid Zhi Gang " is relied on
The method that once supporting solves support issues does not adapt to the large deformation rule of high stress and soft rock mine roadway, will also result in lane later
Road is reprocessed, and when failure and deformation of surrounding rocks is serious, pucking is serious, and artificial bottom plate rupture jacks up, and in shape is erect, at this moment can only take lane
Road is reprocessed, repair of laneway heavy workload, not only influences production, the workload of the worker also increased.Existing method is generally exactly soft
Rock roadway floor supporting, using rigid protection, effect is obvious at first, in soft-rock tunnel after rheology after a period of time, bottom
Plate rigid protection gradually fails, and pucking is serious, needs to carry out repair of laneway, and bottom plate supporting again mainly has reclamation work amount big, at
This height, inefficiency, pucking Surrounding Rock Control is unobvious, and there is no prevent and treat floor structure.
In addition, some schemes can take bottom plate U-shaped steel for soft rock roadway support, although alleviating pucking to a certain degree,
But the characteristic of soft rock is not made full use of, floor rocks structure is utilized.This supporting scheme is time-consuming and laborious expensive,
In practical operation, installation is slow, and the supporting effect later period is undesirable, also significantly impacts mine progress.
Summary of the invention
Based on the above the deficiencies in the prior art, technical problem solved by the invention is to provide a kind of Soft Rock Roadway Floor Heave
It allows and presses camber shell administering method, yield supporting and camber shell structure are applied to bottom plate, Lai Gaishan bottom plate superficial part Surrounding Rock Control effect
Fruit makes full use of characteristics of surrounding rock, improves support efficiency, improves the effect of soft-rock tunnel bottom plate supporting.
In order to solve the above-mentioned technical problem, the present invention is achieved through the following technical solutions:
The present invention provides a kind of Soft Rock Roadway Floor Heave and allows pressure camber shell administering method, comprising the following steps:
S1: with tunnelling, back and two helps normal mounting anchor pole and anchor cable, and top plate is laid with metal mesh, then right
Back and two is helped to carry out whitewashing closing, constitutes armored concrete sealing layer；
S2: the construction of bottom plates in tunnel is reserved to allow and is pressed space by the big bottom plate camber cross dimensions of design size brush；
S3: proportionally mixing flexible packing material in underground, with the flexible packing material mixed, to the pressure that allows reserved
Space, which is filled, to be poured, and is laid with metal mesh after the completion of pouring, is closed；
S4: transport camber shell structure installs camber shell structure, and be embedded into camber and allow after the solidification of flexible packing material
It presses in space, and mixes flexible packing material, pour hollow camber shell structure, wait to be solidified；
S5: beating short fine and closely woven anchor pole on mounted camber shell structure, and camber shell structure and superficial part country rock is enable to be formed
Stable structure；
S6: beating long anchor cable on mounted camber shell structure, and camber shell structure and bottom plate deep wall rock is made to form stabilization
Structure.
Optionally, in step s3:
The flexibility packing material proportion is cement: waterglass: flyash=1:0.2:0.3.
Optionally, in step s 4: using camber shell structure is processed on well, semi-finished product are transported to underground, underground installation；Arc
The structure size of shell can oneself processing customization according to the actual situation, cellular construction should be less than 3000mm, can put into cage into
Row transport.
In step s 5: the diameter of the short fine and closely woven anchor pole is 14mm, and length 1500mm, anchor pole is vertical with arcwall face,
Camber shell structure and superficial part country rock is set to form stable structure, the energy of superficial part country rock release can be absorbed in flexible packing material
Power.
In step s 6: the length of the long anchor cable is 6000mm, keeps bottom plate cross dimensions.
By upper, Soft Rock Roadway Floor Heave of the invention allows pressure camber shell administering method to be to reserve to allow in soft-rock tunnel to press through journey sky
Between, filling flexible material can absorb energy, while installation allows and presses camber shell structure, short fine and closely woven anchor pole is installed, with superficial part country rock
Rock-steady structure is formed, long anchor cable is installed, forms rock-steady structure with deep wall rock, camber shell is able to bear certain deformation, absorption portion
Divide energy, to control soft-rock tunnel pucking phenomenon.Allowing pressure camber shell structure and superficial part country rock to be formed, intensity is high, thickness is thin, structure
Complete supporting construction body, principle is constant, and size can be processed according to actual condition of mines and be customized.Yield supporting and camber shell knot
Structure is applied to bottom plate, and Lai Gaishan bottom plate superficial part Surrounding Rock Control effect makes full use of characteristics of surrounding rock, improves support efficiency, improves soft
The effect of rock roadway floor supporting has strong operability, can improve roadway floor superficial part country rock, further increasing tunnel makes
With the time limit, repair of laneway workload can be reduced, improves coal mine working security.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, below in conjunction with preferred embodiment, and cooperates attached drawing, detailed description are as follows.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, the attached drawing to embodiment is simply situated between below
It continues.
Fig. 1 be Soft Rock Roadway Floor Heave of the invention allow pressure camber shell administering method flow chart；
Fig. 2 is soft-rock tunnel top plate of the invention, two help suspension roof support schematic diagram；
Fig. 3 is the big bottom plate cross dimensions schematic diagram of brush of the invention；
Fig. 4 is bottom plate filling flexible material schematic diagram of the invention；
Fig. 5 allows for bottom plate mounting base of the invention and presses camber shell schematic diagram；
Fig. 6 is that bottom plate of the invention installs anchor pole schematic diagram；
Fig. 7 is that bottom plate of the invention installs anchor cable schematic diagram；
Fig. 8 is the front view of camber shell structure of the invention；
Fig. 9 is the top view of camber shell structure of the invention；
Figure 10 is the side view of camber shell structure of the invention.
Specific embodiment
The embodiment of the invention will now be described in detail with reference to the accompanying drawings, and as part of this specification passes through
Embodiment illustrates the principle of the present invention, and other aspects of the present invention, feature and its advantage will become by the detailed description
It is very clear.In the attached drawing of institute's reference, the same or similar component is indicated using identical drawing reference numeral in different figures.
Present invention is generally directed to the prior arts for the single of soft-rock tunnel bottom plate method for protecting support, existing means control efficiency
It is unobvious, propose a kind of new control method.As shown in Figures 1 to 10, Soft Rock Roadway Floor Heave of the invention allows pressure camber shell to control
Reason method the following steps are included:
Step 1: with tunnelling, back and two helps normal mounting anchor pole 11 and anchor cable 12, and anchor pole 11 usesHigh strength bolt, anchor cable 12 useAnchor cable, top plate be laid with metal mesh
(referring to step S1), then back and two are helped to carry out whitewashing closing, constitute armored concrete sealing layer 10；
Step 2: the bottom plate 13 in tunnel is constructed, and by the big bottom plate camber cross dimensions of design size brush (referring to step S2), is stayed
Sell pressure space；
Step 3: proportionally mixing flexible packing material 30 in underground, with the flexible packing material 30 mixed, to staying
Out allow pressure space to be filled and pour (referring to step S3), be laid with metal mesh after the completion of pouring, closed；
Step 4: transport camber shell structure 20, after the solidification of flexible packing material, installation, which allows, presses (the reference of camber shell structure
Step S4), and be embedded into camber and allow in pressure space, and flexible packing material is mixed, pour hollow camber shell structure, waited solidifying
Gu.
Step 5: short 40 (reference step of fine and closely woven anchor pole is beaten according to design scheme on mounted camber shell structure 20
S5), camber shell structure and superficial part country rock is enable to form stable structure；
Step 6 beats long anchor cable 50 (referring to step S6) on mounted camber shell structure 20, make camber shell structure with
Bottom plate deep wall rock forms stable structure.
In step 3, flexible packing material uses the method mixed in underground, matches as cement: waterglass: flyash
=1:0.2:0.3.
In step 4, using camber shell structure is processed on well, semi-finished product are transported to underground, underground installation, underground construction
Method, reduce worker's workload, the structure size of camber shell can oneself processing customization according to the actual situation, cellular construction is answered small
In 3000mm, cage can be put into and transported.
In step 5, the diameter of short fine and closely woven anchor pole 40 is 14mm, and length 1500mm, anchor pole is vertical with arcwall face, makes
Camber shell structure 20 can form stable structure with superficial part country rock, and the energy of superficial part country rock release can be absorbed in flexible packing material
Power.
In step 6,6000mm long anchor cable 50 is installed, forms camber shell structure 20 and bottom plate deep wall rock stable
Structure, is able to maintain bottom plate cross dimensions, does not influence shaft production transport.
Soft Rock Roadway Floor Heave of the invention rationally allowed using design and construction bottom plate by be allowed pressure camber shell administering method and presses space ruler
It is very little, it is filled using flexible material, plays the role of allowing pressure；For camber shell structure using processing on well, the time is saved in underground installation；
Mounted camber shell structure 20 is poured using flexible packing material 30；Short fine and closely woven anchor is installed on camber shell structure 20
Bar 40 and long anchor cable 50 form stable structure with floor rocks.Method of the invention allows pressure to soft-rock tunnel bottom plate one
Space allows soft-rock tunnel bottom plate to can produce a degree of deformation, after deforming a period of time, partial pressure release, and part energy
Amount is absorbed；Cross dimensions is determined, big bottom plate cross dimensions is brushed, reserves to allow and presses space, selects flexible material, filling makes pressure empty
Between, this space is closed, installation, which allows, presses camber shell structure, to absorb the portion of energy of floor rocks release；In camber shell structure 20
It is upper to beat short fine and closely woven anchor pole 40, stable structure is formed with camber shell structure and superficial part country rock, and beat on camber shell structure 20 long
Anchor cable 50 makes camber shell structure and bottom plate deep wall rock form stable structure.Yield supporting and camber shell structure are applied to
Bottom plate, Lai Gaishan bottom plate superficial part Surrounding Rock Control effect make full use of characteristics of surrounding rock, improve support efficiency, improve soft-rock tunnel bottom
The effect of slab supporting has strong operability, can improve roadway floor superficial part country rock, further increase tunnel service life,
Repair of laneway workload can be reduced, coal mine working security is improved.
The above is a preferred embodiment of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, it is noted that for those skilled in the art, without departing from the principle of the present invention, may be used also
To make several improvement and variation, these, which improve and change, is also considered as protection scope of the present invention.
Claims (5)
1. a kind of Soft Rock Roadway Floor Heave, which allows, presses camber shell administering method, which comprises the following steps:
S1: with tunnelling, back and two helps normal mounting anchor pole and anchor cable, and top plate is laid with metal mesh, then to tunnel
Top plate and two is helped to carry out whitewashing closing, constitutes armored concrete sealing layer；
S2: the construction of bottom plates in tunnel is reserved to allow and is pressed space by the big bottom plate camber cross dimensions of design size brush；
S3: proportionally mixing flexible packing material in underground, with the flexible packing material mixed, allows pressure space to what is reserved
It is filled and pours, be laid with metal mesh after the completion of pouring, closed；
S4: transport camber shell structure installs camber shell structure after the solidification of flexible packing material, and is embedded into camber and makes pressure empty
Between in, and mix flexible packing material, pour hollow camber shell structure, wait to be solidified；
S5: beating short fine and closely woven anchor pole on mounted camber shell structure, and camber shell structure and superficial part country rock is enable to form stabilization
Structure；
S6: beating long anchor cable on mounted camber shell structure, and camber shell structure and bottom plate deep wall rock is made to form stable knot
Structure.
2. Soft Rock Roadway Floor Heave as described in claim 1, which allows, presses camber shell administering method, which is characterized in that in step s3:
The flexibility packing material proportion is cement: waterglass: flyash=1:0.2:0.3.
3. Soft Rock Roadway Floor Heave as described in claim 1, which allows, presses camber shell administering method, which is characterized in that in step s 4:
Using camber shell structure is processed on well, semi-finished product are transported to underground, underground installation；The structure size of camber shell can be according to practical feelings
Condition oneself processing customization, cellular construction should be less than 3000mm, can put cage into and be transported.
4. Soft Rock Roadway Floor Heave as described in claim 1, which allows, presses camber shell administering method, which is characterized in that in step s 5:
The diameter of the short fine and closely woven anchor pole is 14mm, and length 1500mm, anchor pole is vertical with arcwall face, enables camber shell structure and shallow
Portion's country rock forms stable structure, and the ability of superficial part country rock release can be absorbed in flexible packing material.
5. Soft Rock Roadway Floor Heave as described in claim 1, which allows, presses camber shell administering method, which is characterized in that in step s 6:
The length of the long anchor cable is 6000mm, keeps bottom plate cross dimensions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910204817.3A CN110030014B (en) | 2019-03-18 | 2019-03-18 | Yielding arc-shaped shell treatment method for floor heave of soft rock roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910204817.3A CN110030014B (en) | 2019-03-18 | 2019-03-18 | Yielding arc-shaped shell treatment method for floor heave of soft rock roadway |
Publications (2)
| Publication Number | Publication Date |
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| CN110030014A true CN110030014A (en) | 2019-07-19 |
| CN110030014B CN110030014B (en) | 2020-10-27 |
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| CN201910204817.3A Active CN110030014B (en) | 2019-03-18 | 2019-03-18 | Yielding arc-shaped shell treatment method for floor heave of soft rock roadway |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529142A (en) * | 2019-07-30 | 2019-12-03 | 太原理工大学 | Deep tunnel pucking control device and method based on intelligent hydraulic bag |
| CN111997657A (en) * | 2020-08-04 | 2020-11-27 | 天地科技股份有限公司 | Fixed bottom angle arc-shaped frame for coal mine stoping roadway bottom plate and mounting method thereof |
| CN112761661A (en) * | 2021-01-04 | 2021-05-07 | 安徽理工大学 | Construction method for governing roadway floor heave by utilizing quadrangular pyramid reinforcing steel bar inverted arch support |
| CN116882012A (en) * | 2023-07-11 | 2023-10-13 | 安徽建筑大学 | Deep roadway floor heave influence factor and feature analysis method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529142A (en) * | 2019-07-30 | 2019-12-03 | 太原理工大学 | Deep tunnel pucking control device and method based on intelligent hydraulic bag |
| CN111997657A (en) * | 2020-08-04 | 2020-11-27 | 天地科技股份有限公司 | Fixed bottom angle arc-shaped frame for coal mine stoping roadway bottom plate and mounting method thereof |
| CN112761661A (en) * | 2021-01-04 | 2021-05-07 | 安徽理工大学 | Construction method for governing roadway floor heave by utilizing quadrangular pyramid reinforcing steel bar inverted arch support |
| CN116882012A (en) * | 2023-07-11 | 2023-10-13 | 安徽建筑大学 | Deep roadway floor heave influence factor and feature analysis method |
| CN116882012B (en) * | 2023-07-11 | 2024-03-29 | 安徽建筑大学 | Deep roadway floor heave influence factor and feature analysis method |
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Effective date of registration: 20210927 Address after: 110085 No. 60-505 (1), Zhongli Chengyue mansion, Xiangyu Road, Shenfu demonstration zone, Shenyang City, Liaoning Province Patentee after: Liaoning Xinda Testing Co.,Ltd. Address before: Fuxin City, Liaoning Province, China Road 123000 Xihe District No. 47 Patentee before: LIAONING TECHNICAL University |