CN106437777B - A kind of method at the top of the cured tunnel in top and solidification tunnel - Google Patents
A kind of method at the top of the cured tunnel in top and solidification tunnel Download PDFInfo
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- CN106437777B CN106437777B CN201611182327.0A CN201611182327A CN106437777B CN 106437777 B CN106437777 B CN 106437777B CN 201611182327 A CN201611182327 A CN 201611182327A CN 106437777 B CN106437777 B CN 106437777B
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- 238000007711 solidification Methods 0.000 title claims abstract description 11
- 230000008023 solidification Effects 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title abstract description 12
- 238000005192 partition Methods 0.000 claims abstract description 51
- 238000012876 topography Methods 0.000 claims abstract description 17
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims description 65
- 230000009977 dual effect Effects 0.000 claims description 28
- 239000004568 cement Substances 0.000 claims description 18
- 239000011083 cement mortar Substances 0.000 claims description 18
- 239000004575 stone Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000004576 sand Substances 0.000 claims description 12
- 239000004615 ingredient Substances 0.000 claims description 8
- 235000019353 potassium silicate Nutrition 0.000 claims description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 8
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 4
- 239000011440 grout Substances 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 230000008569 process Effects 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
- 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
-
- 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
- E21D11/14—Lining predominantly with metal
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
There is the top that part is located at the first tunnel in method at the top of a kind of cured tunnel in top and solidification tunnel, including the first tunnel, the second tunnel, the second tunnel.Further include outer only pulp layer, interior only pulp layer, cured layer, the inner surface in the first tunnel is arranged in interior only pulp layer, outer only pulp layer is located in the second tunnel part above the first tunnel, cured layer setting is inside only between pulp layer and outer only pulp layer, when the lower surface of the second tunnel part above the first tunnel is inclined, further include partition wall, partition wall is located in the second tunnel and positioned at the side of outer only pulp layer, and the topography of partition wall position is less than the topography of outer only pulp layer position.The advantages of invention, is：The top structure in cured tunnel is solid, and it is simple to cure the method at the top of tunnel.
Description
Technical field
The present invention relates to the methods at the top of the cured tunnel in coal mine field more particularly to a kind of top and solidification tunnel.
Background technology
Abandoned in the tunnel in coal mine field, an aging, and need around the aging tunnel to dig out one it is new
Tunnel, due to having disturbance to ambient earth environment when digging old working road, to loose band occur, when between old working road and new tunnel
Distance it is closer when, may cause new tunnel in loose band theres is a phenomenon where cave in this way, in time to the bottom in old working road with
Cured at the top of new tunnel, but since the soil between two tunnels is disturbed, cured effect or unobvious, institute
Compare method at the top of nearby new tunnel to need a kind of cured tunnel in top and solidification to be located at distance below old working road.
Invention content
Technical problem to be solved by the present invention lies in：Dig before new tunnel due to dig old working road to soil have disturbance or
Dirt bed between old working road and new tunnel, so as to cause the landslide in new tunnel, there is provided herein a kind of top solidification than relatively thin
Tunnel and solidification tunnel at the top of method.
A kind of cured tunnel in top, including the first tunnel, the second tunnel, second tunnel have part to be located at the first lane
The top in road, further includes outer only pulp layer, interior only pulp layer, cured layer, and the inner surface in the first tunnel, institute is arranged in the interior only pulp layer
It states outer only pulp layer to be located in the second tunnel part above the first tunnel, the cured layer is arranged inside only pulp layer and outside stops
Between pulp layer.
Optimization, further include partition wall, the lower surface of the second tunnel part above the first tunnel be it is inclined, it is described
Partition wall is located in the second tunnel and positioned at the side of outer only pulp layer, and the topography of the partition wall position is less than the ground of outer only pulp layer position
Gesture, the level height of partition wall is higher than the outer level height for stopping pulp layer.
Optimization, the lower surface of second tunnel part being located above the first tunnel is horizontal.
Optimization, described sleeve pipe is steel pipe, and the first sleeve, the second casing, third casing have more respectively.
Optimization, the interior only pulp layer and outer only pulp layer are single slurry, and the single slurry is by mixed mud, water, accelerator
Composition, the concrete is made of 32.5 class g cements of P.S.A, yellow sand, stone, the cement, yellow sand, stone weight proportion
It is 1：(1~3)：The weight proportion of (1~3), water and mixed mud is (0.35~0.55):1, accelerator is the 3% of cement weight
~5%.
Optimization, the partition wall and cured layer are dual slurry, and the dual slurry is made of cement mortar and waterglass, described
The ingredient of cement mortar is identical with single slurry with the ratio of each ingredient, and the cement mortar and silicate ratio are 1：(5~7).
A kind of method at the top of solidification tunnel, which is characterized in that its step are as follows：
(1) to the first tunnel inner surface whitewashing, interior only pulp layer is formed after grout cures air-dry；
(2) stop inside in pulp layer and make a call to the first via and the second via, first via and the second via both pass through first
First sleeve and the second casing are crossed the first tunnel and by tunnel and the second tunnel by the first via and the second via respectively
Two tunnels；
(3) dual slurry is injected by first sleeve in the second tunnel out of first tunnel, the shape after dual slurry initial set
At partition wall, then single slurry is injected by the second casing in the second tunnel out of first tunnel, the single liquid of partition wall blocking at this time
It starches and trickles to the low direction of topography, form outer only pulp layer after single slurry solidification air-dries；
(4) by dual slurry it is with pressure by third casing be injected into only pulp layer and outside only between pulp layer, formed after solidifying solid
Change layer.
Optimization, it is 15~25s that the dual slurry initial set, which forms partition wall,.
Optimization, the thickness for the interior only pulp layer that the whitewashing in the step (1) is formed is not more than 0.1m, and interior only pulp layer
Intensity is C20.
Cured method at the top of a kind of tunnel according to claim 7, which is characterized in that single in the step (3)
It is for low-pressure grouting that slurry is injected by the second casing in the second tunnel out of first tunnel, and the pressure is no more than
0.5Mpa。
The advantage of the invention is that：
(1) the first tunnel is new tunnel in the present invention, and the second tunnel is the tunnel discarded, and the surface in the first tunnel is provided with
Interior only pulp layer the phenomenon that preventing to caving in when the plug-in-sleeve of top, is provided with outer only pulp layer and partition wall in the second tunnel, every
Wall prevents outer stop before pulp layer cures not yet from trickling to low-lying place in the second tunnel, to not realize the work of outer only pulp layer
With cured layer setting stops pulp layer and outer only pulp layer inside, to enhance the intensity at the top of new tunnel.
(2) topography of interval wall displacement of the present invention is less than the outer only external topography of pulp layer, in the case of the topography, partition wall
Level height be also above the level height of outer only pulp layer, can effectively prevent uncured only pulp layer to low land potential barrier in this way
It drops down.
(3) effect of first sleeve being arranged in the present invention is by dual slurry from the first tunnel delivered inside to the second tunnel
Interior and quickly form partition wall, the second casing is to form out of first tunnel delivered inside to the second tunnel and quickly single slurry outer
Only pulp layer, third casing are that single slurry out of first tunnel delivered inside to loose band and is quickly formed to outer cured layer.
(4) setting thus facilitates to different positions and outer only pulp layer, partition wall is respectively set there are many casing in the present invention
And cured layer, and a variety of casings are multigroup, can make outer only pulp layer, partition wall and cured layer structural strength higher in this way.
(5) the interior only pulp layer in the present invention, the material that only pulp layer, partition wall and cured layer use outside make at the top of tunnel more
It is solid.
(6) method is simple in the present invention, efficient, and intensity is high at the top of the tunnel eventually formed.
Description of the drawings
Fig. 1 is the structural schematic diagram in tunnel in the present invention.
Specific implementation mode
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment one
As shown in Figure 1, there is part in a kind of cured tunnel in top, including the first tunnel 1, the second tunnel 2, the second tunnel 2
Top positioned at the first tunnel 1.Wherein the first tunnel 1 is new tunnel, and the second tunnel 2 is the tunnel discarded.Tunnel further includes outer
Only pulp layer 4, interior only pulp layer 3, cured layer 6, casing, interior only pulp layer 3 are arranged the inner surface in the first tunnel 1, prevent from inserting top
The phenomenon that caving in when entering casing.Outer only pulp layer 4 is located in 2 part of the second tunnel of 1 top of the first tunnel, cured layer
Between 6 settings stop pulp layer 3 and stop pulp layer 4 outside inside, to the intensity at the top of the first tunnel of enhancing 1.When on the first tunnel 1
The lower surface of 2 part of the second tunnel of side is inclined, further includes partition wall 5, and partition wall 5 is located in the second tunnel 2 and is located at outside only
The side of pulp layer 4, the topography of 5 position of partition wall are less than the topography of outer only 4 position of pulp layer, optimization, and the level height of partition wall 5 is higher than
The level height of outer only pulp layer, such partition wall 5 prevent it is outer before only pulp layer 4 cures not yet in the second tunnel 2 to low-lying place
Trickling.
Casing includes first sleeve 71, the second casing 72, third casing 73, first sleeve 71, the second casing 72 both ends
It stretches to respectively in the second tunnel 2 and the first tunnel 1,73 one end of third casing is arranged through interior only pulp layer 3 and reaches the first tunnel 1
Interior, the other end is arranged in cured layer 6.The effect of first sleeve 71 is by dual slurry from 1 delivered inside of the first tunnel to the second lane
Partition wall 5 is formed in road 2 and quickly, the second casing 72 is that single slurry is in from 1 delivered inside of the first tunnel to the second tunnel 2 and fast
Speed forms outer only pulp layer 4, and third casing 73 is by single slurry out of the first tunnel 1 delivered inside to loose band and outside quickly being formed
Cured layer 6.Optimization, casing is steel pipe, and first sleeve, the second casing, third casing have more respectively.It can make so defeated
The single slurry and dual slurry sent are more uniform, so that stopping pulp layer, partition wall and cured layer structural strength higher outside.
Optimization, interior only pulp layer and outer only pulp layer are single slurry, and single slurry is made of mixed mud, water, accelerator, coagulation
Soil is made of 32.5 class g cements of P.S.A, yellow sand, stone, cement, yellow sand, stone weight proportion be 1：(1~3)：(1~3),
In the present solution, cement, yellow sand, stone weight proportion be 1：2：2, the weight proportion of water and mixed mud be (0.35~
0.55):1, in the present solution, water and the weight proportion of mixed mud are 0.45:1, accelerator is the 3%~5% of cement weight.
Partition wall and cured layer are dual slurry, and dual slurry is made of cement mortar and waterglass, the ingredient of the cement mortar and
The ratio of each ingredient is identical with single slurry, and cement mortar and silicate ratio are 1：(5~7), in the present solution, cement mortar and water glass
Glass proportioning is 1：6.
Embodiment two
As shown in Figure 1, there is part in a kind of cured tunnel in top, including the first tunnel 1, the second tunnel 2, the second tunnel 2
Top positioned at the first tunnel 1.Wherein the first tunnel 1 is new tunnel, and the second tunnel 2 is the tunnel discarded.Tunnel further includes outer
Only pulp layer 4, interior only pulp layer 3, cured layer 6, casing, interior only pulp layer 3 are arranged the inner surface in the first tunnel 1, prevent from inserting top
The phenomenon that caving in when entering casing.Outer only pulp layer 4 is located in 2 part of the second tunnel of 1 top of the first tunnel, cured layer
Between 6 settings stop pulp layer 3 and stop pulp layer 4 outside inside, to the intensity at the top of the first tunnel of enhancing 1.When on the first tunnel 1
The lower surface of 2 part of the second tunnel of side is inclined, further includes partition wall 5, and partition wall 5 is located in the second tunnel 2 and is located at outside only
The side of pulp layer 4, the topography of 5 position of partition wall are less than the topography of outer only 4 position of pulp layer, optimization, and the level height of partition wall 5 is higher than
The level height of outer only pulp layer, such partition wall 5 prevent it is outer before only pulp layer 4 cures not yet in the second tunnel 2 to low-lying place
Trickling.
Casing includes first sleeve 71, the second casing 72, third casing 73, first sleeve 71, the second casing 72 both ends
It stretches to respectively in the second tunnel 2 and the first tunnel 1,73 one end of third casing is arranged through interior only pulp layer 3 and reaches the first tunnel 1
Interior, the other end is arranged in cured layer 6.The effect of first sleeve 71 is by dual slurry from 1 delivered inside of the first tunnel to the second lane
Partition wall 5 is formed in road 2 and quickly, the second casing 72 is that single slurry is in from 1 delivered inside of the first tunnel to the second tunnel 2 and fast
Speed forms outer only pulp layer 4, and third casing 73 is by single slurry out of the first tunnel 1 delivered inside to loose band and outside quickly being formed
Cured layer 6.Optimization, casing is steel pipe, and first sleeve, the second casing, third casing have more respectively.It can make so defeated
The single slurry and dual slurry sent are more uniform, so that stopping pulp layer, partition wall and cured layer structural strength higher outside.
Optimization, interior only pulp layer and outer only pulp layer are single slurry, and single slurry is made of mixed mud, water, accelerator, coagulation
Soil is made of 32.5 class g cements of P.S.A, yellow sand, stone, cement, yellow sand, stone weight proportion be 1：(1~3)：(1~3),
In the present solution, cement, yellow sand, stone weight proportion be 1：1：1, the weight proportion of water and mixed mud be (0.35~
0.55):1, in the present solution, water and the weight proportion of mixed mud are 0.35:1, accelerator is the 3%~5% of cement weight.
Partition wall and cured layer are dual slurry, and dual slurry is made of cement mortar and waterglass, the ingredient of cement mortar and it is each at
The ratio divided is identical with single slurry, and cement mortar and silicate ratio are 1：(5~7), in the present solution, cement mortar and waterglass are matched
Than being 1：5.
Embodiment three
As shown in Figure 1, there is part in a kind of cured tunnel in top, including the first tunnel 1, the second tunnel 2, the second tunnel 2
Top positioned at the first tunnel 1.Wherein the first tunnel 1 is new tunnel, and the second tunnel 2 is the tunnel discarded.Tunnel further includes outer
Only pulp layer 4, interior only pulp layer 3, cured layer 6, casing, interior only pulp layer 3 are arranged the inner surface in the first tunnel 1, prevent from inserting top
The phenomenon that caving in when entering casing.Outer only pulp layer 4 is located in 2 part of the second tunnel of 1 top of the first tunnel, cured layer
Between 6 settings stop pulp layer 3 and stop pulp layer 4 outside inside, to the intensity at the top of the first tunnel of enhancing 1.When on the first tunnel 1
The lower surface of 2 part of the second tunnel of side is inclined, further includes partition wall 5, and partition wall 5 is located in the second tunnel 2 and is located at outside only
The side of pulp layer 4, the topography of 5 position of partition wall are less than the topography of outer only 4 position of pulp layer, optimization, and the level height of partition wall 5 is higher than
The level height of outer only pulp layer, such partition wall 5 prevent it is outer before only pulp layer 4 cures not yet in the second tunnel 2 to low-lying place
Trickling.
Casing includes first sleeve 71, the second casing 72, third casing 73, first sleeve 71, the second casing 72 both ends
It stretches to respectively in the second tunnel 2 and the first tunnel 1,73 one end of third casing is arranged through interior only pulp layer 3 and reaches the first tunnel 1
Interior, the other end is arranged in cured layer 6.The effect of first sleeve 71 is by dual slurry from 1 delivered inside of the first tunnel to the second lane
Partition wall 5 is formed in road 2 and quickly, the second casing 72 is that single slurry is in from 1 delivered inside of the first tunnel to the second tunnel 2 and fast
Speed forms outer only pulp layer 4, and third casing 73 is by single slurry out of the first tunnel 1 delivered inside to loose band and outside quickly being formed
Cured layer 6.Optimization, casing is steel pipe, and first sleeve, the second casing, third casing have more respectively.It can make so defeated
The single slurry and dual slurry sent are more uniform, so that stopping pulp layer, partition wall and cured layer structural strength higher outside.
Optimization, interior only pulp layer and outer only pulp layer are single slurry, and single slurry is made of mixed mud, water, accelerator, coagulation
Soil is made of 32.5 class g cements of P.S.A, yellow sand, stone, cement, yellow sand, stone weight proportion be 1：(1~3)：(1~3),
In the present solution, cement, yellow sand, stone weight proportion be 1：3：3, the weight proportion of water and mixed mud is 0.55:1, at this
In scheme, the weight proportion of water and mixed mud is 0.55:1, accelerator is the 3%~5% of cement weight.
Partition wall and cured layer are dual slurry, and dual slurry is made of cement mortar and waterglass, the ingredient of cement mortar and it is each at
The ratio divided is identical with single slurry, and cement mortar and silicate ratio are 1：(5~7), in the present solution, cement mortar and waterglass are matched
Than being 1：7.
Example IV
As shown in Figure 1, a kind of method at the top of solidification tunnel, its step are as follows：
(1) into the first tunnel, 1 surface is whitewashed, and interior only pulp layer 3 is formed after grout cures air-dry；The interior of whitewashing formation stops
The thickness of pulp layer 3 is not more than 0.1m, and the intensity of interior only pulp layer is C20.
(2) stop inside in pulp layer 3 and make a call to the first via and the second via, the first via and the second via both pass through the first tunnel
1 and second tunnel 2, first sleeve 71 and the second casing 72 are crossed into the first tunnel 1 by the first via and the second via respectively
With the second tunnel 2.
(3) dual slurry is injected by first sleeve in the second tunnel out of first tunnel 1, the shape after dual slurry initial set
At partition wall 5, optimization, it is 15~25s that dual slurry initial set, which forms partition wall 5,.Then single slurry is passed through second out of first tunnel 1
Casing 72 is injected into the second tunnel 2, and partition wall 5 stops that single slurry is trickled to the low direction of topography at this time, waits for that single slurry solidifies wind
Outer only pulp layer 4 is formed after dry.Wherein, single slurry be injected into the second tunnel 2 by the second casing 72 out of first tunnel 1 be for
Low-pressure grouting, pressure are no more than 0.5Mpa.
(4) by dual slurry it is with pressure by third casing 73 be injected into only pulp layer 3 and outside only between pulp layer 4, the shape after solidifying
At cured layer 6.
The preferred embodiment that these are only the invention is not intended to limit the invention creation, all in the present invention
All any modification, equivalent and improvement etc., should be included in the guarantor of the invention made by within the spirit and principle of creation
Within the scope of shield.
Claims (10)
1. a kind of cured tunnel in top, including the first tunnel, the second tunnel, second tunnel has part to be located at the first tunnel
Top, which is characterized in that further include outer only pulp layer, interior only pulp layer, cured layer, it is described in only pulp layer be arranged in the first tunnel
Inner surface, the outer only pulp layer are located in the second tunnel part above the first tunnel, and the cured layer setting stops pulp layer inside
Between outer only pulp layer.
2. the cured tunnel in a kind of top according to claim 1, which is characterized in that further include partition wall, be located at the first lane
The lower surface of the second tunnel part above road is inclined, and the partition wall is located in the second tunnel and positioned at the one of outer only pulp layer
Side, for the topography of the partition wall position less than the outer topography for stopping pulp layer position, the level height of partition wall is higher than the level of outer only pulp layer
Highly.
3. the cured tunnel in a kind of top according to claim 1, which is characterized in that described to be located above the first tunnel
The lower surface of second tunnel part is horizontal.
4. the cured tunnel in a kind of top according to claim 1, which is characterized in that further include casing, described sleeve pipe packet
Include first sleeve, the second casing, third casing, the both ends of the first sleeve, the second casing both ends stretch to the second lane respectively
In road and the first tunnel, third casing one end is arranged through interior only pulp layer and reaches in the first tunnel, and other end setting is solid
Change layer.
5. the cured tunnel in a kind of top according to claim 4, which is characterized in that described sleeve pipe is steel pipe, described
Sleeve, the second casing, third casing have more respectively.
6. the cured tunnel in a kind of top according to claim 2, which is characterized in that only pulp layer stops pulp layer with outer in described
It is single slurry, the single slurry is made of concrete, water, accelerator, and the concrete is by 32.5 class g cements of P.S.A, Huang
Husky, stone composition, the cement, yellow sand, stone weight proportion be 1：(1~3)：The weight of (1~3), water and concrete is matched
Than for (0.35~0.55):1, accelerator is the 3%~5% of cement weight.
7. the cured tunnel in a kind of top according to claim 6, which is characterized in that the partition wall and cured layer are double
Slurry, the dual slurry are made of cement mortar and waterglass, the ratio and single liquid of the ingredient of the cement mortar and each ingredient
Starch identical, the cement mortar and silicate ratio are 1：(5~7).
8. a kind of curing in cured tunnel in top as described in claim 1-7 any one, which is characterized in that it is walked
It is rapid as follows：
(1) to the first tunnel inner surface whitewashing, interior only pulp layer is formed after grout cures air-dry；
(2) stop inside in pulp layer and make a call to the first via and the second via, first via and the second via both pass through the first tunnel
With the second tunnel, first sleeve and the second casing are crossed into the first tunnel and the second lane by the first via and the second via respectively
Road；
(3) dual slurry is injected by first sleeve in the second tunnel out of first tunnel, after dual slurry initial set formed every
Then single slurry is injected by the second casing in the second tunnel by wall out of first tunnel, at this time partition wall stop single slurry to
The low direction trickling of topography, forms outer only pulp layer after single slurry solidification air-dries；
(4) by dual slurry it is with pressure by third casing be injected into only pulp layer and outside only between pulp layer, form cured layer after solidifying.
9. a kind of curing in the cured tunnel in top according to claim 8, which is characterized in that at the beginning of the dual slurry
The solidifying time for forming partition wall is 15~25s.
10. a kind of curing in the cured tunnel in top according to claim 8, which is characterized in that the step (3)
In, it is low-pressure grouting that single slurry is injected by the second casing in the second tunnel out of first tunnel, and pressure is no more than 0.5Mpa.
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| DE3531283C2 (en) * | 1985-09-02 | 1988-06-09 | Dyckerhoff & Widmann Ag, 8000 Muenchen, De | |
| CN101864967A (en) * | 2010-06-13 | 2010-10-20 | 中国矿业大学 | Strengthening and reinforcing method of high-ground-pressure soft rock laneway by hierarchical grouting |
| CN102312673A (en) * | 2010-07-09 | 2012-01-11 | 上海市基础工程有限公司 | Construction method for allowing shield to pass through operated subway tunnel in short distance under complex working conditions |
| CN104594919A (en) * | 2015-01-22 | 2015-05-06 | 山东科技大学 | Soft rock roadway buffering tapered double strong shell support system and construction method thereof |
| CN105178981A (en) * | 2015-09-30 | 2015-12-23 | 中国矿业大学 | Total-section closed type deep-shallow coupling yielding, bolting-grouting and supporting method for incompact and fractured soft-rock roadway |
| CN105484753A (en) * | 2015-12-29 | 2016-04-13 | 龙口矿业集团有限公司 | Tunneling support method for high-water-pressure high-flow fracture zone |
| CN105804767A (en) * | 2016-04-13 | 2016-07-27 | 安徽理工大学 | Surrounding rock supporting construction method and surrounding rock supporting structure of water-contained roadway of coal mine |
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