CN109026010B - A kind of mine seepage well slip casting type sinking shaft construction method - Google Patents
A kind of mine seepage well slip casting type sinking shaft construction method Download PDFInfo
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- CN109026010B CN109026010B CN201810917258.6A CN201810917258A CN109026010B CN 109026010 B CN109026010 B CN 109026010B CN 201810917258 A CN201810917258 A CN 201810917258A CN 109026010 B CN109026010 B CN 109026010B
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- 238000007569 slipcasting Methods 0.000 title claims abstract description 51
- 238000010276 construction Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 144
- 239000011435 rock Substances 0.000 claims abstract description 23
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000005553 drilling Methods 0.000 claims abstract description 15
- 238000005422 blasting Methods 0.000 claims abstract description 7
- 230000004888 barrier function Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 241001074085 Scophthalmus aquosus Species 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- 230000008014 freezing Effects 0.000 description 7
- 238000007710 freezing Methods 0.000 description 7
- 238000001764 infiltration Methods 0.000 description 6
- 230000008595 infiltration Effects 0.000 description 5
- 239000004567 concrete Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 230000035568 catharsis Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/10—Preparation of the ground
- E21D1/105—Preparation of the ground by water level modification
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
- E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of novel mine seepage well slip casting type sinking shaft construction methods, applying water white-out to the underground water-bearing layer to be infused of the utilization of hour seepage well principle by target water-bearing layer, Draining hook is carried out to the water-bearing layer around pit shaft by the hydrophobic pressure release brill of underworkings or km Directional Drilling again, material is thus formed hydrophobic funnels, the well that intercepts water of annular is formd, pit shaft can carry out dry-well operation using common drilling and blasting method.After shaft construction crosses this section of water-bearing layer, then slip casting closure is carried out to seepage well and country rock using the Grouting Pipe inside seepage well.Using this construction method, inflow of water can be reduced, the shaft sinking system constructed using common law.The present invention is suitable for the construction of the very big pit shaft of later period inflow of water of mine.
Description
Technical field
The present invention relates to a kind of construction methods of mine vertical shaft pit shaft, and in particular to a kind of mine seepage well slip casting type sinking shaft is applied
Work method.
Background technique
The very big geological condition of shaft of vertical well water yield is frequently encountered in engineering design, since inflow of water is very big, very
The construction method that more mines are had to using sinking shafts such as freezing process, slip casting methods is invested very big.
Slip casting is divided into pre grouting from the surface, pre grouting from the working face, and since many regional water-bearing layers are pore water, when construction is direct
Slip casting is carried out, the case where not can guarantee slip casting effect, and be easy to appear spillage, running pulp.Investment is also big, and technology is uncontrollable,
West area is almost seldom applied, and has the case of failure.
Current entire west area, the construction freezing method generallyd use, construction freezing method technology is controllable, but invests huge
It greatly, is in addition exactly to cause shaft wall lining thickness very big, some mine thickness of shaft wall have reached more than two meters, due to using high
Concrete, aquation heat problem are not resolved, and cause borehole wall external wall construction of poor quality.
Summary of the invention
The present invention is directed to existing problem, and it is an object of the present invention to provide a kind of mine seepage well slip casting type sinking shaft construction method,
The water yield during shaft mineshaft construction is reduced, using seepage well so as to realize that common law carries out the construction of vertical.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of mine seepage well slip casting type sinking shaft construction method, comprising the following steps:
1) according to inflow of water size, the first water barrier and the second water barrier are determined, and hydrophobic target is needed to contain
The depth of water layer and seepage well；
2) it according to mineshaft diameter size and water yield, target water-bearing layer thickness, is calculated by the calculation formula of disturbed wells
Seepage well number；Around pit shaft arrangement can slip casting seepage well；
3) utilize seepage well by the water white-out in target water-bearing layer to the water-bearing layer of underground water-injection；
4) Draining hook is carried out to the water-bearing layer filled the water around pit shaft；
5) pit shaft and the borehole wall of constructing are excavated；
6) after shaft construction crosses target water-bearing layer, slip casting closure is carried out to seepage well and peripheral rock；
7) slip casting is carried out to seepage well and country rock and forms curtain.
A further improvement of the present invention lies in that seepage well is 1~3 circle.
A further improvement of the present invention lies in that passing through the hydrophobic pressure release brill or km Directional Drilling of underworkings in step 4)
Draining hook is carried out to the water-bearing layer filled the water around pit shaft.
A further improvement of the present invention lies in that excavating pit shaft and the borehole wall of constructing using drilling and blasting method in step 5).
A further improvement of the present invention lies in that in step 6), using the Grouting Pipe in seepage well to seepage well and peripheral rock into
Row slip casting blocks, or carries out slip casting closure to seepage well and peripheral rock using pre grouting from the working face.
A further improvement of the present invention lies in that in step 7), by the Grouting Pipe that is embedded in seepage well to seepage well and country rock
It carries out slip casting and forms curtain.
Compared with prior art, the invention has the benefit that
The present invention is applying water white-out to the underground water-bearing layer to be filled the water of the utilization of hour seepage well principle by target water-bearing layer, then
Draining hook is carried out to the water-bearing layer of the water filling around pit shaft by the hydrophobic pressure release brill or km Directional Drilling of underworkings, in this way
It is formed hydrophobic funnel, has been formed simultaneously the well that intercepts water of annular, pit shaft can carry out dry-well operation using common drilling and blasting method.This
Invention, extremely can catharsis by the water white-out in target water-bearing layer due to using seepage well principle when present invention construction compared with slip casting method
Water-bearing layer, the in this way hole around seepage well during hydrophobic in water-bearing layer will constantly increase, when the later period carries out slip casting
More easily, the ring seal space i.e. formation of curtain is more readily formed.The present invention is compared with freezing process, when due to present invention construction
Grouting and reinforcing is carried out to seepage well and country rock by Grouting Pipe, curtain is formed, is equivalent to and increases thickness of shaft wall, greatly strengthen to
Ability resistant to pressure.Because freezing shaft wall considers to resist the effect of hydraulic pressure, the concrete strength label of the borehole wall is very high, and some places are used
The high-grade concretes such as C70 even C80, like this, it is more that thickness of shaft wall has all reached 2.0m, due to construction freezing method environment ratio
It is poor, cause that shaft wall construction quality is poor, durability is poor, outer wall is readily formed crack, and it is direct to result in hydraulic pressure in this way
Inner wall is acted on, hydraulic pressure is very big, and pit shaft safety is poor.Since the formation of curtain directly encloses external water source, using this
The shaft wall of invention remains as the shaft wall design of common drill bursting construction, and the shaft wall lining thickness is small, concrete
Label is low, and borehole wall construction has the advantages of quality controllable, small investment.Not only thickness is thin for the borehole wall of common law construction, and matter of constructing
It measures, technology is controllable.
The present invention is compared with slip casting method in the prior art, freezing process etc., and with small investment, the advantages such as technology is controllable are fitted
More larger than shallower or mine shaft depth for pit shaft, there is opening for drainage in underground or the Directional Drilling that can construct carries out water filling water-bearing layer
Dredge the mine of precipitation, the construction of especially built mine later period pit shaft.Using this construction method, inflow of water can be reduced, is adopted
Sinking shaft construction is carried out with common law.The present invention is suitable for the construction of the very big pit shaft of later period inflow of water of mine.
After pit shaft is by target water-bearing layer certain distance, seepage well and country rock are infused using the Grouting Pipe inside seepage well
Slurry blocks.Or slip casting is carried out to country rock around by pre grouting from the working face.Or to shaft construction after carry out slip casting again.
Detailed description of the invention
Fig. 1 is that well examines No. 1 drill hole geologic and hydrogeological histogram；
Seepage well plan view when Fig. 2 is construction target water-bearing layer；
Fig. 3 is seepage well and shaft lining floor map after construction slip casting；
Seepage well and pit shaft diagrammatic cross-section when Fig. 4 is construction target water-bearing layer；
Fig. 5 is construct target water-bearing layer seepage well and pit shaft diagrammatic cross-section
Fig. 6 is seepage well and pit shaft diagrammatic cross-section after construction.
Wherein: 1 is seepage well；2 be country rock；3 be pit shaft, and 4 be target water-bearing layer, and 5 be the first water barrier, and 6 be containing for water filling
Water layer, 7 be the second water barrier, and 8 be water-bearing layer, and 9 bore for hydrophobic pressure release, and 10 be the borehole wall, and 11 be curtain.
Specific embodiment
Further explanation of the contents of the invention are made with reference to the accompanying drawing.
Referring to Fig. 1-Fig. 6, mine seepage well slip casting type sinking shaft construction method of the invention, comprising the following steps:
1) check that geologic report determines target water-bearing layer 4, the water-bearing layer 6 of water filling, the position in water-bearing layer 8 and thickness by pit shaft
Degree and the first water barrier 5 and the position of the second water barrier 7, thickness, 1 water yield of infiltration coefficient, hydraulic pressure head and pit shaft；
2) according to 1 water yield size of pit shaft, the first water barrier 5 and the second water barrier 7 are determined, and needs hydrophobic target
The depth of water-bearing layer 4 and seepage well 1；
3) according to 3 diameter of pit shaft and water yield, 4 thickness of target water-bearing layer, pass through the calculation formula meter of disturbed wells
Calculate 1 number of seepage well；Around pit shaft 3 arrange N circle can slip casting seepage well 1；
4) utilize seepage well 1 by the water white-out in target water-bearing layer 4 to the water-bearing layer of underground water-injection 6；
5) it is dredged by the water-bearing layer 6 that the hydrophobic pressure release brill 9 or km Directional Drilling of underworkings fill the water 3 surrounding of pit shaft
Water decompression；
6) pit shaft 3 and the borehole wall 10 of constructing are excavated using drilling and blasting method；
7) after pit shaft 3 constructed target water-bearing layer 4, using the Grouting Pipe in seepage well 1 to seepage well 1 and peripheral rock 2 into
Row slip casting blocks, or carries out slip casting closure to seepage well 1 and peripheral rock 2 using pre grouting from the working face.
8) slip casting is carried out to seepage well 1 and country rock 2 by the Grouting Pipe being embedded in seepage well 1 and forms curtain 11.
Embodiment 1
Ju well is examined hole and is disclosed, and pit shaft, which will pass through stratum, the 4th system (Q), Cretaceous System Luo He group (K1L), Yijun's group (K1y),
Unite stable group (J in Jurassic system2a), straight sieve group (J2Z), YAN ' AN FORMATION (J2y) and Jurassic system under unite Fu County group (J1f) 1), hydrogeology
See Fig. 1.Wherein the 4th system, Cretaceous System Luo He group, unite in Jurassic system YAN ' AN FORMATION (J2y) it is basal water, it is other for opposite water proof
Layer.
According to mine hydrogeology condition, K1LAnd J2yWater-bearing layer is unlimited artesian aquifer, with pit shaft developing and pit shaft
Draining, when artesian head is down to water-bearing layer or less, then switchs to no pressure by pressure-bearing.Therefore pressure-bearing is selected to turn to calculate without pressure formula, Q is aqueous
Layer is phreatic aquifer, selects the water yield formula of diving complete penetration of well:
I.e.
In formula: Q-inflow rate of mine water (m3/d)；
K-infiltration coefficient (m/d)；
H-head (column) height (m)；
H-residual water head height (m)；
M-water-bearing layer thickness (m)；
R-the radius of influence (m)；
r0--- big well reference radius (m)；
Ro- citation impact radius (m).
Inflow of water calculated result list see the table below 1
1 inflow of water calculated result of table
Mineshaft diameter 5.0m, digging diameter 5.8m are designed, mine shaft depth about 560m, it is aqueous that pit shaft passes through the water-bearing layer Q, K1L
Layer, the water-bearing layer J2y.Design uses the diameter of filter well for 600mm, and slip casting pipe diameter is 150mm.Seepage well depth 580m.
Therefore, objective hydrophobic water-bearing layer have two layers be the water-bearing layer K1L, the water-bearing layer J2y respectively.According to circumferential dry
The number of the calculating seepage well of gang of wells is disturbed, calculation formula is as follows:
Wherein: K --- infiltration coefficient, as can be known from Table 1, the infiltration coefficient in target water-bearing layer 4 are 0.17944, water filling
The infiltration coefficient in water-bearing layer 6 is 0.23947；
M --- water-bearing layer thickness, as can be known from Table 1, target water-bearing layer 4 with a thickness of 99.69m, the water-bearing layer 6 of water filling
With a thickness of 42.91；
R --- the radius of influence, K1LThe water-bearing layer radius of influence is 1418m, J2yThe water-bearing layer radius of influence is 2712m；
N --- seepage well number；
rw--- seepage well radius, K1LWater-bearing layer is 0.3m, J2yWater-bearing layer is 0.3m；
sw--- drawdown in pumped well, K1LWater-bearing layer is 334m, J2yWater-bearing layer is 554m；
Q --- water yield, K1LWater-bearing layer is 5164.45, J2yWater-bearing layer is 5028.21；
r——5.0m；
According to pumped well empirical data, the diameter of seepage well is 600mm, and slip casting pipe diameter is 150mm, and infiltration ability is about
10m3/ h considers certain coefficient, takes single filter well 200m3/d。
Design is by carrying out slip casting closure to the water-bearing layer 6 of water filling behind the water-bearing layer K1L of target water-bearing layer.
When carrying out hydrophobic to the target water-bearing layer water-bearing layer K1L by calculating, seepage well number is about 32, entire hydrophobic ability
For 6400m3/d>5164.45m3/ d meets dry-well requirement.
When the target water-bearing layer water-bearing layer J2y carries out hydrophobic, seepage well number is about 28, and entire hydrophobic ability is
5600m3/d>5028.21m3/ d meets dry-well requirement.
Consider slip casting requirement, taking seepage well number is 35.
Underground Draining hook bore diameter is 300mm, pumpage 400m3/ d is computed 26 Draining hooks of arrangement and bores
Hole.
According to above content, mine seepage well slip casting type sinking shaft construction is carried out:
1) the 1 circle seepage well 1 of arrangement around pit shaft, according to 3 diameter of pit shaft and water yield, 4 thickness of target water-bearing layer, root
The number of seepage well 1 is calculated according to the calculation formula of disturbed wells；Seepage well 1 is arranged around pit shaft 3；
2) utilize seepage well 1 by 4 white-out of target water-bearing layer to the water-bearing layer of underground water-injection 6；
3) water-bearing layer 6 filled the water around pit shaft is dredged by the hydrophobic pressure release brill 9 or km Directional Drilling of underworkings
Water decompression；
4) drilling and blasting method excavates pit shaft 3 and the borehole wall 10 of constructing, referring to Fig. 1；
5) after shaft construction crosses target water-bearing layer 4, referring to fig. 4, seepage well 1 and periphery are enclosed using the Grouting Pipe in seepage well
Rock 2 carries out slip casting closure, also can use pre grouting from the working face and carries out slip casting closure to seepage well 1 and peripheral rock 2.
6) slip casting is carried out to seepage well 1 and country rock 2 by the Grouting Pipe being embedded in seepage well 1 again and forms curtain 11, referring to fig. 2
And Fig. 5.
The present invention is applying water white-out to the underground water-bearing layer to be infused of the utilization of hour seepage well principle by target water-bearing layer, then leads to
The hydrophobic pressure release brill or km Directional Drilling for crossing underworkings carry out Draining hook to the water-bearing layer around pit shaft, material is thus formed
Hydrophobic funnel, pit shaft can carry out dry-well operation using common drilling and blasting method.After pit shaft is by target water-bearing layer certain distance, then
Slip casting is carried out or by pre grouting from the working face to country rock around by gravel and surrounding country rock of the Grouting Pipe in seepage well to filling
Carry out slip casting.Or to shaft construction after carry out slip casting again.It, will be upper the invention proposes water drain funnel is formed using seepage well
In Area Objects dewatering and drainage of aquifer to some water-bearing layer of lower layer, so that water drain funnel is formed, during substantially reducing shaft construction
Water yield, thereby may be ensured that and constructed using common law.Using this construction method, inflow of water can be reduced, is used
The shaft sinking system of common law construction.The present invention is suitable for the construction of the very big pit shaft of later period inflow of water of mine.
Claims (6)
1. a kind of mine seepage well slip casting type sinking shaft construction method, which comprises the following steps:
1) according to pit shaft (3) water yield size, the first water barrier (5) and the second water barrier (7) are determined, and need hydrophobic mesh
Mark the depth of water-bearing layer (4) and seepage well (1)；
2) according to pit shaft (3) diameter and water yield, target water-bearing layer (4) thickness, pass through the calculation formula meter of disturbed wells
Calculate seepage well (1) number；Around pit shaft (3) arrangement can slip casting seepage well (1)；
3) utilize seepage well (1) by the water-bearing layer (6) of the water white-out of target water-bearing layer (4) to underground water-injection；
4) Draining hook is carried out to the water-bearing layer (6) filled the water around pit shaft (3)；
5) pit shaft (3) and the borehole wall of constructing (10) are excavated；
6) after pit shaft (3) constructed target water-bearing layer (4), slip casting closure is carried out to seepage well (1) and peripheral rock (2)；
7) slip casting is carried out to seepage well (1) and country rock (2) and forms curtain (11).
2. a kind of mine seepage well slip casting type sinking shaft construction method according to claim 1, which is characterized in that in step 2),
Seepage well (1) is 1~3 circle.
3. a kind of mine seepage well slip casting type sinking shaft construction method according to claim 1, which is characterized in that in step 4),
(9) or km Directional Drilling are bored by the hydrophobic pressure release of underworkings, and hydrophobic drop is carried out to the water-bearing layer (6) filled the water around pit shaft (3)
Pressure.
4. a kind of mine seepage well slip casting type sinking shaft construction method according to claim 1, which is characterized in that in step 5),
Pit shaft (3) and the borehole wall of constructing (10) are excavated using drilling and blasting method.
5. a kind of mine seepage well slip casting type sinking shaft construction method according to claim 1, which is characterized in that in step 6),
Slip casting closure is carried out to seepage well (1) and peripheral rock (2) using the inner Grouting Pipe of seepage well (1), or utilizes pre grouting from the working face pair
Seepage well (1) and peripheral rock (2) carry out slip casting closure.
6. a kind of mine seepage well slip casting type sinking shaft construction method according to claim 1, which is characterized in that in step 7),
Slip casting formation curtain (11) is carried out to seepage well (1) and country rock (2) by being embedded in seepage well (1) inner Grouting Pipe.
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| CN109854249A (en) * | 2019-03-04 | 2019-06-07 | 中煤第五建设有限公司 | It is a kind of for extra deep shaft formation pre processing around the lane Jing Huan method |
| CN111550250A (en) * | 2020-05-15 | 2020-08-18 | 陕西延长石油巴拉素煤业有限公司 | Water prevention and control protection method for safe excavation of water-rich coal seam section of vertical shaft |
| CN111927480B (en) * | 2020-08-11 | 2021-10-29 | 中国矿业大学 | Construction method of underground continuous blind slot grouting curtain for water-based rock rich in pores |
| CN112031778B (en) * | 2020-09-11 | 2023-02-03 | 北京住总集团有限责任公司 | Construction method for shaft excavation based on multi-angle pre-reinforcement |
| CN114635697B (en) * | 2022-02-25 | 2023-01-24 | 中国矿业大学 | Pre-grouting treatment method for water damage of shaft well construction |
| CN117780354B (en) * | 2024-02-28 | 2024-05-14 | 安徽建筑大学 | Method for reinforcing bottom of shaft of coal mine vertical shaft to be built by thick loose layer thin bedrock by sparse-filling |
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| SU1490285A1 (en) * | 1987-07-07 | 1989-06-30 | Кузбасский Политехнический Институт | Method of producing counter-seepage curtain inwertical mine working |
| CN101598022A (en) * | 2009-05-13 | 2009-12-09 | 隋忠良 | The job practices of vertical simultaneous drifting |
| CN104763431A (en) * | 2015-01-22 | 2015-07-08 | 隋忠良 | Novel shaft construction method |
| CN106869153B (en) * | 2017-04-24 | 2019-04-30 | 冯克俊 | A kind of method of the quick soft soil foundation treatment of well-points dewatering |
| CN107035376B (en) * | 2017-05-19 | 2019-04-09 | 陕西长武亭南煤业有限责任公司 | One kind common law in huge thick bedrock aquifer digs shaft construction method |
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