CN208280965U - Coal mine deep well tunnel smooth surface concrete spraying support structure - Google Patents
Coal mine deep well tunnel smooth surface concrete spraying support structure Download PDFInfo
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- CN208280965U CN208280965U CN201820848470.7U CN201820848470U CN208280965U CN 208280965 U CN208280965 U CN 208280965U CN 201820848470 U CN201820848470 U CN 201820848470U CN 208280965 U CN208280965 U CN 208280965U
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- 239000004567 concrete Substances 0.000 title claims abstract description 53
- 239000003245 coal Substances 0.000 title claims abstract description 36
- 238000005507 spraying Methods 0.000 title claims abstract description 30
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 87
- 238000010276 construction Methods 0.000 claims abstract description 37
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 32
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 239000002023 wood Substances 0.000 claims description 7
- 239000007921 spray Substances 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 14
- 238000011161 development Methods 0.000 abstract description 8
- 238000009416 shuttering Methods 0.000 abstract description 6
- 239000011435 rock Substances 0.000 abstract description 5
- 239000011378 shotcrete Substances 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 11
- 238000009415 formwork Methods 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 239000004568 cement Substances 0.000 description 10
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000010408 sweeping Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 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
- 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
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/02—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means
- E04G1/04—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means the members being exclusively poles, rods, beams, or other members of similar form and simple cross-section
-
- 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
- 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model provides a kind of coal mine deep well tunnel smooth surface concrete spraying support structure, and the coal mine deep well tunnel smooth surface concrete spraying support structure includes: bottom plate, and the bottom plate is cuboid thin plate, and along tunnel, length is moved towards to be laid with；Scaffold, the scaffold building is on the bottom plate, for providing support；Arch bone, the arch bone in arcuation and move towards direction in tunnel cross section by the scaffold support；Template, the template-setup is between the arch bone and tunnel surface, and the lower surface of the template is supported on the lateral surface of tangible arch bone；The technical solution of the utility model is a kind of active support method of deep-well tunnel deformation controlling for rock surrounding gateways, complex especially suitable for coal bed texture, soft stratum cranny development deep-well tunnel.The method for protecting support of the utility model sprays arch using shuttering, and no rebound material saves material and cost, alleviates construction early period and the late maintaining labor intensity of worker, realizes mine laneway quality standardization.
Description
Technical field
The utility model belongs to roadway support field, and in particular to, soft stratum complex suitable for coal bed texture is split
The coal mine deep well tunnel smooth surface concrete spraying support method of the deep-well tunnel of gap development.
Background technique
Effectively control deformation of the surrounding rock in tunnel guarantees that tunnel safety is unobstructed, is the most important condition of mine safety production.In western part
Area, great burying mine is more rare, and coal bed texture is complex, cranny development, different from the geological conditions in other areas, can
The data of reference is less.After entering deep mining, it may appear that crustal stress is high, mining influence is violent, surrounding rock structure is soft, fracture
The phenomenon that structure development.Using fully-mechanized excavating construction technique, Bolt net and jet+cable bolting mode, laneway molding is poor, discontinuity；Lane
Road water drenching is big, and whitewashing body easily falls off, and seriously affects into lane construction speed.Anchor pole (rope) hole periphery water drenching is larger, the failure period
Long, whitewashing body easily falls off, and repeatedly multiple spray still effect is poor, and rebound degree is up to 50%；Both the effect of whitewashing closing scar is not had
Fruit also can not meet mine quality standardization and manufacturing schedule requirement.Tunnel is chronically at unbalance stress state；Exist simultaneously spray
Dust pollution is serious during slurry, and operating environment is poor, and labor intensity of workers is heavy, and top plate falls a series of security risks such as Gunning material.
Therefore, the method for protecting support of deep-well tunnel and its research of construction technology have ten under the conditions of the western buried mine of development
Divide important meaning.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, propose a kind of injection of coal mine deep well tunnel smooth surface
Concrete supporting structure and its construction method.The technical solution of the utility model is a kind of master of deep-well tunnel deformation controlling for rock surrounding gateways
Dynamic method for protecting support, complex especially suitable for coal bed texture, soft stratum cranny development deep-well tunnel.The utility model
Method for protecting support sprays arch using shuttering, and no rebound material saves material and cost, alleviates construction early period and the late maintaining of worker
Labor intensity realizes mine laneway quality standardization.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of coal mine deep well tunnel smooth surface concrete spraying support structure, it is preferable that coal mine deep well tunnel smooth surface injection
Concrete supporting structure includes:
Bottom plate, the bottom plate are cuboid thin plate, and along tunnel, length is moved towards to be laid with；
Scaffold, the scaffold building is on the bottom plate, for providing support；
Arch bone, the arch bone in arcuation and move towards direction in tunnel cross section by the scaffold support；
Template, the template-setup is between the arch bone and tunnel surface, and tangible arch is supported in the lower surface of the template
On the lateral surface of bone；
Concrete, the concrete ejection are used for shape in the gap between the upper surface and tunnel surface of the template
At smooth surface concrete spraying support structure.
A kind of coal mine deep well tunnel smooth surface concrete spraying support structure as described above, it is preferable that the scaffold includes:
Cross bar: the cross bar is located at below the arch of the arch bone, and the cross bar both ends side with the arch bone respectively
Portion's medial surface supports real；
Upright bar: the upright bar connection is on the cross bar and vertical with the cross-car, and the upright bar lower end is located at institute
It states at the upper surface of bottom plate, upper end contradicts at the medial surface of the arch of the arch bone；
Diagonal brace: the diagonal brace is connected on the cross bar and upright bar by iron wire, and described diagonal brace one end contradicts the arch
On the medial surface of the arch of bone, the other end is fixed on bottom plate；
Big plate: the big plate is set up on the cross bar, for the operating platform as construction；
Preferably, a height of 0.5-1.5m of scaffold layer；
More preferably, a height of 1m of scaffold layer, the spacing of multiple cross bars are 1m, the spacing of multiple upright bars
For 1m；
More preferably, the angle of the diagonal brace and the bottom plate is 60 °.
A kind of coal mine deep well tunnel smooth surface concrete spraying support structure as described above, it is preferable that further include:
Wood support, the wood support are located between the lateral surface and tunnel surface of the arch bone, are used to support and stablize the arch
Bone；
Preferably, it is made of in the arch bone of arcuation two sections of vertical portions of side and two sections of arc arch；More preferably, two
Portion of Duan Suoshu side is the stalk of high 1.8m；Two sections of arch are the circular arc of long 4.428m, and two sections of circular arc arch are combined
The arch of the arch bone is formed together；
More preferably, the arch skeleton sets spacing as 1m.
A kind of coal mine deep well tunnel smooth surface concrete spraying support structure as described above, it is preferable that under the scaffold
The left side in portion is equipped with traffic space, right side reserved belt space；
Preferably, the width × height=1.5 × 1.2m for crossing belt space, width × height=2.5 of the traffic space ×
2.2m。
A kind of construction method of coal mine deep well tunnel smooth surface concrete spraying support structure, it is preferable that the coal mine deep well lane
Road smooth surface concrete spraying support method the following steps are included:
Preparation of construction: step 1 prepares multi rack arch bone, and arch bone is fixed on tunnel surface by reinforcing bar drag hook；
Prepare high-quality plank as template, the quantity of plank is no less than the dosage in the tunnel of 10m length；
The steel pipe, fastener and high-quality big plate of scaffold are set up in preparation；
Step 2, formwork erection installation: before steady arch bone, first stringcourse is deep and levelling by arch bone footing pointing chisel of taking root in, then
Scaffold is set up in construction area, and bar of sweeping the floor is set, makes bar abutting bottom plate of sweeping the floor, sets up scaffold and reserve belt in the process
Machine, pedestrian and mistake vehicle passage space；
Elder generation's stalk rear arch when steady arch bone, and be connected in time securely, and by arch bone fixation on scaffold；
After arch bone is surely got well, successively symmetrical formwork supporting plate, every piece of template both ends are fixed on arch bone with iron wire from bottom to top；
Step 3, whitewashing pour and demoulding: gunite concrete is using pulp shooting machine progress, first with clear water by lane side before operation
Floating dust is rinsed well, then sprays spray head alignment template rear, whitewash must it is continuous, be layered, two sides symmetrically carry out, often
High 500~the 800mm of layer；Demoulding must at least be carried out after the completion of injection after 8 hours, personnel stand on the operational platform, from upper
Downward successively demoulding.
The construction method of coal mine deep well tunnel as described above smooth surface concrete spraying support structure, it is preferable that the step
In one, the high-quality plank is the high-quality plank of 40 × 200 × 2000mm of δ, and the quantity of the plank is no less than 10m length
The dosage in tunnel；
Preferably, the reinforcing bar drag hook is the reinforcing bar drag hook of φ 18mm.
The construction method of coal mine deep well tunnel as described above smooth surface concrete spraying support structure, it is preferable that the step
In two, the scaffold during setting up, strictly by middle line be close to set up on the inside of arch tire, and cross bar necessarily has to extend into side simultaneously by upright bar
It is set to reality, and in the scaffold, diagonal brace diagonal brace and ground angle are 60 °, and support real bottom plate；
Preferably, the steel pipe for setting up scaffold is Ф 48mm steel pipe, high-quality big plate with a thickness of 70mm.
The construction method of coal mine deep well tunnel as described above smooth surface concrete spraying support structure, it is preferable that the step
In three, the strength grade of gunite concrete is C20, and according to cement: yellow sand: rubble=1:2:2 is prepared, and ratio of mud control exists
0.4~0.5, accelerator will be uniformly added into proportion, and volume is the 3% of cement weight；
More preferably, before construction, above pedestrian side and belt, the big plate of close paving δ 70mm uses 8# as operating platform
Iron wire and scaffold binding and fixing；
More preferably, construction period while keeping template wet, in one layer of waste and old diesel oil of the template surface brush, is used
It is more convenient in guarantee later period demoulding.
The construction method of coal mine deep well tunnel as described above smooth surface concrete spraying support structure, it is preferable that the step
In three, from east to west, sequence carries out the construction of spray arch, and mono- batch of 10m, plug is arranged using scaffold and wooden model version in front and back；It is disconnected to spray arch
From side to arch, chi sequence is carried out in face, finally injection top, convenient for closure door.
The construction method of coal mine deep well tunnel as described above smooth surface concrete spraying support structure, it is preferable that the step
In three, the pulp shooting machine is located at the rear of spray arch job location.
Compared with the immediate prior art, technical solution provided by the utility model has following excellent effect:
1, technical solution provided by the utility model is conducive to keep the safety in production, and tunnel is poured fully according to arch, sufficiently sends out
Wave arched tunnel uniform force, pressure-resistant feature.Be not in that local place stress is concentrated, improve and form poor, stress early period
Uneven situation.Later maintenance project amount is few simultaneously, relatively safety, saves road maintenance expense.
2, technical solution provided by the utility model is conducive to mine quality standardization, is constructed using this method, and tunnel is seen
Feel high-quality, as the developing main entry of connection shaft station, is conducive to the development of the quality standardization work in mine.
3, technical solution provided by the utility model saves material and cost, sprays arch using shuttering, no rebound material mitigates
The labor intensity of worker, every meter is averagely saved gunite concrete 3.5m3, be converted into cement 1.6t, middle sand 4.1t, rubble 4.0t,
Accelerator 60kg adds up to and saves 1261 yuan/meter of material cost；Mitigate the workload of mine shaft conveyance system, at least reduces transport three
Tank, cost add up in 3000 yuan/meter and save 4261 yuan/meter of cost.
4, technical solution provided by the utility model is conducive to carry out production strictly in line with rules and regulations, using this method, closing whitewashing, reduce with
Pollution toward whitewashing to systems such as pipeline, belt, cables in tunnel, while decreasing worker and protecting cable, pipeline, belt
Deng workload.
5, technical solution provided by the utility model is conducive to underground ventilating system, sprays arch using formwork erection, drift section is flat
Whole, ventilation resistance is small, as the main distinguished and admirable tunnel in underground, greatly reduced distinguished and admirable resistance, reduces the booting power of main air blower,
Save the electricity charge.
Detailed description of the invention
Fig. 1 is the deep-well tunnel construction cross-section diagram of the utility model embodiment；
Fig. 2 is that the arch bone of the utility model embodiment sets up figure；
Fig. 3 is the scaffold building and spray arch cross-section diagram of the utility model embodiment.
In figure: 1, roadway construction range line profile；2, excavated section contour line is designed；3, center line in roadway；4, skewback line；
5, arch bone curved section；6, arch bone straightway；7, bottom plate；8, cross bar；9, upright bar；10, diagonal brace；11, template；12, arch bone；13, row
Vehicle space；14, belt space is crossed；15, tunnel surface；16, concrete.
Specific embodiment
Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Example is applied, those of ordinary skill in the art's every other embodiment obtained is fallen within the protection scope of the utility model.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that not conflicting
In the case where, the feature in the embodiments of the present invention and embodiment can be combined with each other.
Term used in the utility model " connected ", " connection " shall be understood in a broad sense in the description of the present invention,
For example, it may be being fixedly connected, may be a detachable connection；It can be directly connected, it can also be indirect by intermediate member
It is connected, for the ordinary skill in the art, can understands the concrete meaning of above-mentioned term as the case may be.
As shown in Figure 1 to Figure 3, the embodiments of the present invention provide a kind of coal mine deep well tunnel smooth surface gunite concrete branch
Protection structure and its construction method, the method for protecting support of the utility model spray arch using shuttering 11, no rebound material, saving material and at
This, alleviates construction early period and the late maintaining labor intensity of worker, realizes mine laneway quality standardization.The utility model mentions
The technical solution of confession can be effectively controlled deformation of the surrounding rock in tunnel, make tunnel that long-term security be kept to stablize.
Specific embodiment according to the present utility model, 16 supporting construction of coal mine deep well tunnel smooth surface gunite concrete include:
Bottom plate 7: bottom plate 7 is cuboid thin plate, and along tunnel, length direction is laid on the bottom surface of tunnel；Bottom plate 7, which helps to ensure that, entirely to be applied
The stationarity on work basis is also convenient for setting up the unification of the upright bar specification of scaffold.
Scaffold: scaffold building is on bottom plate 7, for providing support.
Arch bone 12: arch bone 12 is made of portion of side and arch, and arch bone 12 is connected on scaffold.
Template 11: template 11 is rectangular-shape, and template 11 is connected on arch bone 12, is used to form tunnel deep-well injection coagulation
The smooth surface of soil 16.
Wood support: wood support is located between 12 outside of arch bone and tunnel surface 15, is used to support and stablizes arch bone 12.
In specific embodiment according to the present utility model, scaffold includes:
Cross bar 8: cross bar 8 and 12 portion of side of arch bone support in fact, and it is to make cross bar 8 to arch bone that cross bar 8 supports real with 12 portion of side of arch bone
12 provide the support force of a transverse direction, shape arch bone 12 easily, and multiple 8 spacing of cross bar are 1m.Cross bar setting not only makes at one meter
The appearance for obtaining scaffold seems more neat, also makes being more uniformly stressed for scaffold.
Upright bar 9: upright bar 9 is close to be arranged on the inside of arch bone 12, and 9 upper end of upright bar contradicts 12 arch of arch bone, and upright bar 9 is used to support
12 arch bone arch, the spacing of multiple upright bars 9 are 1m.It is arranged to 1m to be convenient for being cooperatively connected with multiple cross bars 8, the arch bone 12 also made encircles
Portion is easier to stable formation.
Diagonal brace 10: 10 one end of diagonal brace contradicts 12 arch of arch bone, and the upper end of diagonal brace 10 contradicts 12 arch of arch bone, rises to arch bone 12
To the effect supported again, the other end is fixed on bottom plate 7, and the lower end of diagonal brace 10 is pacified by the mounting base being reserved on bottom plate 7
In seat, convenient for engineering after dismantlement work progress, and diagonal brace 10 is connected in cross bar 8 and upright bar by iron wire,
Iron wire is commonly to tie up silk in engineering, and it is easy to disassemble that this ties up silk, and can play the role of being connected and fixed.
Big plate: big plate rides upon on cross bar 8, and big plate can be high-quality bamboo clappers, can be the plate of other materials, great Ban Pu
It is located on the cross bar 8 of scaffold for the operating platform as construction.
Preferably, a height of 1m of scaffold layer；More preferably, the diameter of steel tube for setting up scaffold is 48mm；More preferably,
The angle of diagonal brace 10 and bottom plate 7 is 60 °.
Specific embodiment according to the present utility model, arch bone 12 are held together by 12# iron wire with scaffold；Template 11 is used
14# iron wire (No. 14 iron wires) is fixed on arch bone 12.The cross bar 8 of scaffold is connected with upright bar 9 by dedicated fastener, dedicated fastener
Cheap scaffold disassembly.The portion of side of arch bone 12 has two sections, and two sections of portions of side are the stalk of high 1.8m；The arch of arch bone 12 has two
Section, two sections of arch are the circular arc of long 4.428m, and arch bone 12 is arranged to four sections and is readily transported, is also convenient in the limited sky in tunnel
It is interior preferably to set up assembling.Preferably, arch bone 12 has 20 framves；More preferably, it is 1m that arch bone 12, which sets up spacing,.
Specific embodiment according to the present utility model, 16 method for protecting support of coal mine deep well tunnel smooth surface gunite concrete include with
Lower step:
Preparation of construction: step 1 prepares 12 multi rack of arch bone, and arch bone 12 is fixed on tunnel surface by reinforcing bar drag hook
15。
Prepare high-quality plank as template 11, the quantity of plank is no less than the dosage in the tunnel 10m.
The steel pipe, fastener and high-quality big plate of scaffold are set up in preparation.
Step 2, formwork erection installation: before steady arch bone 12, first 12 footing of arch bone pointing chisel of taking root is reached depth and looked for by stringcourse in
It is flat, then set up scaffold in construction area, and bar of sweeping the floor is set, bar of sweeping the floor is close to bottom plate 7, sets up scaffold and reserves in the process
Belt feeder, pedestrian and mistake vehicle passage space.Elder generation's wall rear arch when steady arch bone 12, and being connected in time securely, and by arch bone 12
It is fixed on scaffold.After arch bone 12 is surely got well, successively symmetrical formwork supporting plate 11, every piece of 11 both ends of template are fixed with iron wire from bottom to top
On arch bone 12.
Step 3, whitewashing pour and demoulding: gunite concrete 16 is carried out using pulp shooting machine, first with clear water by lane side before operation
Floating dust rinse well, then 11 rear of spray head alignment template is sprayed, whitewash must continuous, layering, two sides symmetrically into
Row, 500~800mm every layer high (such as 525mm, 550mm, 575mm, 600mm, 625mm, 650mm, 675mm, 700mm, 725mm,
750mm,775mm).After 8 hours must at least be waited after the completion of injection can demoulding, personnel stand on the operational platform, on to
Under successively demoulding.
Specific embodiment according to the present utility model, in step 1:
High-quality plank is 40 × 200 × 2000mm of δ (i.e. thickness × width × length=40mm × 200mm × 2000mm's)
High-quality plank, and the quantity of plank is no less than the dosage in the tunnel 10m；Preferably, reinforcing bar drag hook is the reinforcing bar drag hook of φ 18mm.
Specific embodiment according to the present utility model, in step 2, for scaffold during setting up, middle line is strictly pressed in upright bar
It is close to set up on the inside of arch tire, cross bar 8, which necessarily has to extend into, to be helped and support in fact, and sets bridging in scaffold, diagonal brace 10 and ground angle
It is 60 °, and supports real bottom plate 7.
Preferably, the steel pipe for setting up scaffold is Ф 48mm steel pipe, high-quality big plate with a thickness of 70mm.
Specific embodiment according to the present utility model, in step 3, the pulp shooting machine of gunite concrete 16 is the whitewashing of VII type of ZP-
Machine, and spraying concrete strength grade is C20, according to cement: yellow sand: rubble=1:2:2 is prepared, ratio of mud control 0.4~
0.5 (such as 0.41,0.42,0.43,0.44,0.45,0.46,0.47,0.48,0.49), accelerator will be uniformly added into proportion, be mixed
Amount is the 3% of cement weight.
Before construction, above pedestrian side and belt, the big plate of close paving δ 70mm is as operating platform, and with 8# iron wire and foot
Hand cradle binding and fixing.
Construction period while keeping template 11 to moisten, brushes one layer of waste and old diesel oil on 11 surface of template, for guaranteeing the later period
Demoulding is more convenient.
Specific embodiment according to the present utility model, in step 3, the operating procedure for the door that joins the two sections of a bridge, etc is specifically referred to: spray arch construction
From east to west, sequence carries out, and mono- batch of 10m, front and back, which is used, is arranged plug using scaffold and wooden model version.Spray arch section from side to
Arch, chi sequence carry out, finally injection top, convenient for closure door.
Specific embodiment according to the present utility model, in step 3, gunite concrete quality control method is specifically: whitewashing
Machine is located at the rear of spray arch job location, to reduce voids and pits, it is desirable that the proportion of control cement and water, according to the arch after demoulding
Weight can properly increase cement proportion, while in view of water drenching size in tunnel controls water.
Specific embodiment according to the present utility model, form of construction work are parallel construction, and due to meeting head on normally to tunnel, rear is vertical
Mould spray arch must not block tunnel, so must reserve traffic space 13 and cross belt space 14, when setting scaffold, on a tunnel left side
Side reserved belt space 14, belt feeder 1.2m wide, height 0.8m, and reserved space is wide × height >=1.5 × 1.2m；Simultaneously in tunnel
Right side reserves pedestrian and crosses vehicle space, rubber tire vehicle width 2.0m, high 1.8m, and reserved space is wide × height >=2.5 × 2.2m；To guarantee vehicle
The safety of safety and operator, before construction, above pedestrian side and belt, the big plate of close paving δ 70mm, as operating platform.
The release treatment of template 11, template 11 is after Reusability, and surface speckles with whitewashing clast, and dismounting is extremely inconvenient, because
This needs to carry out template 11 release treatment, and construction period while keeping template 11 to moisten, brushes one layer of waste and old bavin on its surface
Oil, later period demoulding are more convenient.
Laneway molding control, arch bone 12 are simple type, are processed using 10# channel steel, to guarantee the specification matter after tunnel pours
Amount during steady arch bone 12, will be substantially reduced the mobile possibility of 12 stress of arch bone, therefore with 8# iron wire by arch bone 12 and roadway support anchor
Bar strap energetically, while supportting (wood support is removed with gunite concrete 16) in the inboard wood of stamping between tunnel surface 15 of arch bone 12,
Arch bone 12 and scaffolding steel pipe are connected and fixed with iron wire.To sum up, the utility model using simple arch bone+template+scaffold+
Gunite concrete joint construction, by the upward formwork erection in tunnel bottom, two sides crosswise jet concrete, until last closure door；To protect
Card is worked continuously, and formwork erection and whitewashing do not stop, advanced guncreting 10m of formwork erection or so parallel operations.
The utility model main contents include the following steps:
1, preparation of construction: prepare arch bone totally 20 frame, processed by 10# channel steel, every frame arch bone is made of 4 parts, wherein arch
Two parts are the circular arc of long 4.428m；Side portion's two parts are the stalk of long 1.8m.Arch skeleton sets spacing 1m, passes through φ
The reinforcing bar drag hook of 18mm is fixed, and is held together with 12# iron wire with scaffold.Template uses δ 40 × 200 × 2000 (1000) mm
High-quality plank, the no less than dosage in the tunnel 10m.Scaffold Ф 48mm steel pipe and the thick high-quality big plate of fastener, 70mm are set up.Foot
Array pitch and the control of layer height are in 1m or so between hand cradle upright bar, cross bar, and upright bar strictly is close to set up on the inside of arch tire by middle line, and scaffold tubes are horizontal
Bar, which necessarily has to extend into, to be helped and supports in fact, and bridging is set in scaffold, and diagonal brace and ground angle are 60 °, and support real bottom plate.
2, formwork erection is installed: before steady arch bone first in stringcourse arch bone footing is taken root a little look for it is enough deep and levelling.Then it is applying
Work area domain is set up solid and reliable scaffold (also serving as operating platform after spreading big plate), and interlamellar spacing is controlled in 1m or so, if sweeping the floor bar,
It is close to bottom plate, belt feeder and pedestrian is reserved during setting up, crosses vehicle passage space.Elder generation's wall rear arch when steady arch bone, and spiral shell is used in time
Bolt is connected firmly, and with 8# iron wire by arch bone binding and fixing in frame hand cradle.After arch bone is surely good, successively symmetrical formwork from bottom to top
Plate, every piece of template both ends are fixed on arch bone using 14# iron wire.
3, whitewashing pours and demoulding: gunite concrete is using the progress of VII type pulp shooting machine of ZP-, first with clear water by lane side before operation
Floating dust rinse well, injection concrete strength grade be C20, according to cement: yellow sand: rubble=1:2:2 is prepared, ratio of mud control
0.4~0.5, accelerator will be uniformly added into system in proportion, and volume is the 3% of cement weight.Operating personnel holds spray tightly when whitewashing
Rifle, alignment template rear are sprayed.Whitewashing must it is continuous, be layered, two sides symmetrically carry out, 500~800mm every layer high.Injection
It can demoulding after 8 hours must at least be waited after the completion.Personnel stand on the operational platform, successively demoulding from the top down.
In conclusion the utility model also has the following technical effect that
1, the utility model using shuttering spray arch method for protecting support method, be conducive to keep the safety in production, tunnel fully according to
Arch pours, and gives full play to arched tunnel uniform force, pressure-resistant feature.Tunnel is not in that local place is answered after the completion of construction
Power is concentrated, and is improved and is formed poor, the situation of unbalance stress early period.This method later maintenance project amount is few simultaneously, relatively safety, section
Save road maintenance expense.
2, the utility model is conducive to mine quality standardization, is constructed using this method, and tunnel impression quality is good, as even
The developing main entry for connecing shaft station is conducive to the development of the quality standardization work in mine.
3, the utility model is conducive to save material and cost, sprays arch using shuttering, no rebound material mitigates the labor of worker
Fatigue resistance, every meter is averagely saved gunite concrete 3.5m3, is converted into cement 1.6t, middle sand 4.1t, rubble 4.0t, accelerator
60kg adds up to and saves 1261 yuan/meter of material cost；Mitigate the workload of mine shaft conveyance system, at least reduces three tanks of transport, cost
In 3000 yuan/meter, adds up to and save 4261 yuan/meter of cost.
4, the utility model is conducive to carry out production strictly in line with rules and regulations, and using this method, closing whitewashing reduces previous whitewashing in tunnel
The systems such as pipeline, belt, cable pollution, while decreasing the workload that worker protects cable, pipeline, belt etc..
5, the utility model is conducive to underground ventilating system, sprays arch using formwork erection, and drift section is smooth, and ventilation resistance is small,
As the main distinguished and admirable tunnel in underground, distinguished and admirable resistance greatly reduced, reduce the booting power of main air blower, save the electricity charge.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on, in the pending power of the utility model
Within the scope of benefit is claimed.
Claims (10)
1. a kind of coal mine deep well tunnel smooth surface concrete spraying support structure, which is characterized in that coal mine deep well tunnel smooth surface
Concrete spraying support structure includes:
Bottom plate, the bottom plate are cuboid thin plate, and along tunnel, length is moved towards to be laid with；
Scaffold, the scaffold building is on the bottom plate, for providing support；
Arch bone, the arch bone in arcuation and move towards direction in tunnel cross section by the scaffold support；
Template, the template-setup is between the arch bone and tunnel surface, and tangible arch bone is supported in the lower surface of the template
On lateral surface；
Concrete, the concrete ejection are used to form light in the gap between the upper surface and tunnel surface of the template
Face concrete spraying support structure.
2. a kind of coal mine deep well tunnel smooth surface concrete spraying support structure as described in claim 1, which is characterized in that described
Scaffold includes:
Cross bar: the cross bar is located at below the arch of the arch bone, and the cross bar both ends are respectively and in the portion of side of the arch bone
Side is supported real；
Upright bar: the upright bar connection is on the cross bar and vertical with the cross-car, and the upright bar lower end is located at the bottom
At the upper surface of plate, upper end is contradicted at the medial surface of the arch of the arch bone；
Diagonal brace: the diagonal brace is connected on the cross bar and upright bar by iron wire, and described diagonal brace one end contradicts the arch bone
On the medial surface of arch, the other end is fixed on bottom plate；
Big plate: the big plate is set up on the cross bar, for the operating platform as construction.
3. a kind of coal mine deep well tunnel smooth surface concrete spraying support structure as claimed in claim 2, which is characterized in that described
The a height of 0.5-1.5m of scaffold layer.
4. a kind of coal mine deep well tunnel smooth surface concrete spraying support structure as claimed in claim 2, which is characterized in that described
The a height of 1m of scaffold layer, the spacing of multiple cross bars are 1m, and the spacing of multiple upright bars is 1m.
5. a kind of coal mine deep well tunnel smooth surface concrete spraying support structure as claimed in claim 2, which is characterized in that described
The angle of diagonal brace and the bottom plate is 60 °.
6. a kind of coal mine deep well tunnel smooth surface concrete spraying support structure as described in claim 1, which is characterized in that also wrap
The wooden support is included, the wood support is located between the lateral surface and tunnel surface of the arch bone, is used to support and stablizes the arch bone.
7. a kind of coal mine deep well tunnel smooth surface concrete spraying support structure as claimed in claim 6, which is characterized in that in arch
The arch bone of shape is made of two sections of vertical portions of side and two sections of arc arch.
8. a kind of coal mine deep well tunnel smooth surface concrete spraying support structure as claimed in claim 7, which is characterized in that two sections
The portion of side is the stalk of high 1.8m；Two sections of arch are the circular arc of long 4.428m, and two sections of circular arc arch combinations exist
It is formed together the arch of the arch bone.
9. a kind of coal mine deep well tunnel smooth surface concrete spraying support structure as claimed in claim 6, which is characterized in that described
Arch skeleton sets spacing as 1m.
10. a kind of coal mine deep well tunnel smooth surface concrete spraying support structure as described in claim 1, which is characterized in that institute
The left side for stating the lower part of scaffold is equipped with traffic space, right side reserved belt space, and the width × height for crossing belt space=
1.5 × 1.2m, width × height=2.5 × 2.2m of the traffic space.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810502221 | 2018-05-23 | ||
| CN2018105022217 | 2018-05-23 |
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| CN208280965U true CN208280965U (en) | 2018-12-25 |
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| CN201810560850.5A Active CN108643938B (en) | 2018-05-23 | 2018-05-25 | Smooth surface shotcrete supporting structure of deep coal mine tunnel and construction method thereof |
| CN201820848470.7U Expired - Fee Related CN208280965U (en) | 2018-05-23 | 2018-05-25 | Coal mine deep well tunnel smooth surface concrete spraying support structure |
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| CN201810560850.5A Active CN108643938B (en) | 2018-05-23 | 2018-05-25 | Smooth surface shotcrete supporting structure of deep coal mine tunnel and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643938A (en) * | 2018-05-23 | 2018-10-12 | 淮矿西部煤矿投资管理有限公司 | Coal mine deep well tunnel smooth surface concrete spraying support structure and its construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109915149B (en) * | 2019-03-18 | 2021-05-04 | 中交第二航务工程局有限公司 | Variable-section tunnel excavation construction method based on climbing pilot tunnel |
| CN110410128B (en) * | 2019-07-12 | 2020-12-11 | 湖南三五二环保科技有限公司 | Crawler-type coal face retracting device and using method thereof |
| CN110318797B (en) * | 2019-07-12 | 2020-07-17 | 湖南三五二环保科技有限公司 | Coal face withdrawing device and using method thereof |
| CN110410127B (en) * | 2019-07-12 | 2020-12-15 | 湖南三五二环保科技有限公司 | Withdrawal device for self-moving coal face and use method thereof |
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| CN101975073B (en) * | 2009-09-30 | 2013-08-07 | 王晓利 | Retractable concrete arch and anchor rod combined support system and construction method |
| CN201517419U (en) * | 2009-09-30 | 2010-06-30 | 王晓利 | One-time bendable template device for pouring double-layer concrete skewback of underground engineering |
| CN102505708B (en) * | 2011-10-21 | 2014-05-07 | 中冶建工集团有限公司 | Construction method of tunnel at oversized cross section open cut area in track traffic |
| CN102425422B (en) * | 2011-11-17 | 2013-12-04 | 大同煤矿集团有限责任公司 | Method for constructing cross-over chambers with full-coal outsize cross section under host lane ceaseless transportation condition |
| CN102587936B (en) * | 2012-04-01 | 2013-12-11 | 中国矿业大学 | Fully-enclosed integral assembly grid concrete support method |
| CN102937027B (en) * | 2012-11-30 | 2016-09-07 | 中铁十九局集团第二工程有限公司 | A kind of construction method of edge top arch and bottom arch of concrete pouring tunnel |
| CN103244142A (en) * | 2013-05-23 | 2013-08-14 | 中煤科工集团武汉设计研究院 | Device and method for supporting concrete strip of flexible formwork for tunnel laid coal conveying pipeline |
| CN203374284U (en) * | 2013-07-05 | 2014-01-01 | 煤炭工业济南设计研究院有限公司 | Soft rock roadway totally-closed fracture surface arching support |
| CN204419199U (en) * | 2014-09-11 | 2015-06-24 | 安徽恒源煤电股份有限公司祁东煤矿 | A kind of down-hole Simple hydraulic metal arch bone device |
| CN105443143B (en) * | 2016-01-08 | 2018-02-06 | 陕西开拓建筑科技有限公司 | A kind of coal mine gob roadway support device and its construction method |
| CN106930767B (en) * | 2017-03-28 | 2019-01-08 | 中国五冶集团有限公司 | Big cross section arcading tunnel construction method |
| CN207194920U (en) * | 2017-09-08 | 2018-04-06 | 山西新元煤炭有限责任公司 | A kind of U-shaped frame roadway support structure |
| CN108643938B (en) * | 2018-05-23 | 2024-04-05 | 淮矿西部煤矿投资管理有限公司 | Smooth surface shotcrete supporting structure of deep coal mine tunnel and construction method thereof |
-
2018
- 2018-05-25 CN CN201810560850.5A patent/CN108643938B/en active Active
- 2018-05-25 CN CN201820848470.7U patent/CN208280965U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643938A (en) * | 2018-05-23 | 2018-10-12 | 淮矿西部煤矿投资管理有限公司 | Coal mine deep well tunnel smooth surface concrete spraying support structure and its construction method |
| CN108643938B (en) * | 2018-05-23 | 2024-04-05 | 淮矿西部煤矿投资管理有限公司 | Smooth surface shotcrete supporting structure of deep coal mine tunnel and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108643938B (en) | 2024-04-05 |
| CN108643938A (en) | 2018-10-12 |
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