CN207892652U - A kind of dewatering device of tunnel rich water section - Google Patents
A kind of dewatering device of tunnel rich water section Download PDFInfo
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- CN207892652U CN207892652U CN201820193455.3U CN201820193455U CN207892652U CN 207892652 U CN207892652 U CN 207892652U CN 201820193455 U CN201820193455 U CN 201820193455U CN 207892652 U CN207892652 U CN 207892652U
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Abstract
The utility model discloses a kind of dewatering device of tunnel rich water section, tunnel trunk is equipped in stratum, the dewatering device includes multiple dewatering wells, and the dewatering well is symmetrical and is equidistantly set in the stratum of the tunnel trunk both sides.The construction safety and construction quality that the dewatering device of the utility model can be discharged the underground water of tunnel rich water section, reduce underground water content within the scope of constructing tunnel, ensure tunnel.
Description
Technical field
The utility model belongs to technical field of tunnel construction more particularly to a kind of dewatering device of tunnel rich water section.
Background technology
China topography Xi Gaodong is low, stepped distribution；Landform is varied, and mountain area area is vast.River from West to East,
Decline step by step, river fall is big, and water can be contained abundant.Diversified landform is adaptation to local conditions, and development agriculture woods, herds, is secondary a variety of
Operation provides advantage.Mountain area develop forestry, animal husbandry, tourist industry, mining industry etc. have advantage；But mountain area ground
It is rugged, it has inconvenient traffic, is unfavorable for developing planting industry.In order to develop the economy in China western part, local people's living standard is improved.I
Country implement strategy to develop western regions.We will improve traffic first, and since western mountainous areas distribution is very extensive, tunnel exists
Play very important role in traffic.But simultaneously because there is more flourishing lithic drainage in these places, this also gives tunnel
Safety belt in the construction and operation in road carrys out huge hidden danger.
Currently, influence of the underground water to tunnel, is always an international problem for perplexing tunnel development.In order to reduce
There are mainly two types of methods for this influence：Waterproof and draining.Wherein waterproof includes mainly composite lining water-proofing method（It is mainly used for new Austria
The tunnel of method construction）, secondary lining water-proofing method（It is mainly used for shield method）, grouting and water-proof method etc..And drainage mainly has lining cutting
Gutter channel process, country rock gutter channel process etc., excessive for water, such as submerged tunnel, we can also use immersed tunnelling method.
Since the soil rock stratum of rich water section is extremely unstable rich in moisture, directly carries out constructing tunnel and easily cause tunnel
Preliminary bracing deformation even occur tunnel cave, seriously jeopardize the quality of construction safety and engineering, it is therefore desirable in Tunnel
It is synchronous outside tunnel while interior construction to carry out dewatering construction, and carry out monitoring in real time and measure, prevent the generation of engineering accident.
Utility model content
The technical problems to be solved in the utility model is to overcome the shortcomings of the prior art, and providing a kind of can be discharged tunnel
The underground water of rich water section reduces underground water content within the scope of constructing tunnel, the construction safety for ensureing tunnel and construction quality
The dewatering device of tunnel rich water section.
In order to solve the above technical problems, the utility model proposes technical solution be：
A kind of dewatering device of tunnel rich water section is equipped with tunnel trunk in stratum, and the dewatering device includes multiple drops
Well, the dewatering well is symmetrical and is equidistantly set in the stratum of the tunnel trunk both sides.
The dewatering device of above-mentioned tunnel rich water section, it is preferred that multiple adjacent precipitation well construction dewatering well groups,
Dewatering well in the precipitation well group is at a distance from the outer ledge of the tunnel trunk with the direction that tunnel trunk is axially extending
First increases and then decreases.
The dewatering device of above-mentioned tunnel rich water section, it is preferred that the dewatering well is apart from the outside of the tunnel trunk
Edge is 2~4m.
The dewatering device of above-mentioned tunnel rich water section, it is preferred that be located at the two neighboring institute of the tunnel trunk homonymy
The spacing for stating dewatering well is 10~12m.
The dewatering device of above-mentioned tunnel rich water section, it is preferred that connection is equipped between the symmetrical dewatering well
Pipe.
The dewatering device of above-mentioned tunnel rich water section, it is preferred that the dewatering well includes no sand cement chimney filter and gravel
Layer, the gravel layer are coated on the outside of the no sand cement chimney filter.
The dewatering device of above-mentioned tunnel rich water section, it is preferred that the bottom of the dewatering well is additionally provided with sediment tube, described
The top of sediment tube is equipped with filter, and the top of the filter is equipped with outlet pipe, and the outlet pipe extends to drop all the way up
The lower part of the upper outlet of well, the outlet pipe is equipped with immersible pump.
The dewatering device of above-mentioned tunnel rich water section, it is preferred that the immersible pump, filter and sediment tube are set to water
Below bit line.
The dewatering device of above-mentioned tunnel rich water section, it is preferred that a diameter of 600~650mm of the dewatering well, it is described
The internal diameter of no sand cement chimney filter is 400~420mm, and the wall thickness of the no sand cement chimney filter is 50~60mm.
The dewatering device of above-mentioned tunnel rich water section, it is preferred that the drilling depth of the dewatering well is Hw, the height of hole position
Journey is H0, the elevation of the inverted arch bottom of the tunnel trunk is H1, precipitation water level is H apart from inverted arch bottom2, water-head H3, water level
Amplitude of variation is H4, the length of the filter is H5, the length of the sediment tube is H6, drilling depth Hw=H0-H1+H2+H3+H4
+H5+H6。
Compared with prior art, the utility model has the advantage of：
The dewatering device of the tunnel rich water section of the utility model is equipped with tunnel trunk, the dewatering device packet in stratum
Include multiple dewatering wells, the dewatering well is symmetrical and is equidistantly set in the stratum of the tunnel trunk both sides, and being symmetrical arranged can be with
From tunnel both sides precipitation simultaneously, precipitation efficiency is improved, guarantee is placed equidistant with along the longitudinal uniform precipitation in tunnel, precipitation unevenness is avoided to lead
It causes coffer mechanics change of properties difference big, causes potential danger, multiple dewatering wells to can guarantee constructing tunnel range constructing tunnel
The moisture content of interior country rock is in uniform and lower level, ensures the engineering matter that the safety of constructing tunnel process and tunnel are built
Amount.
Description of the drawings
Fig. 1 is the overlooking structure diagram of embodiment 1.
Fig. 2 is the main structure diagram of embodiment 1.
Fig. 3 is the side structure schematic view of embodiment 1.
Fig. 4 is the main structure diagram of the dewatering well in embodiment 1.
Fig. 5 is the overlooking structure diagram of the dewatering well in embodiment 1.
Fig. 6 is the overlooking structure diagram of embodiment 2.
Fig. 7 is the side structure schematic view of embodiment 2.
Marginal data：
1, tunnel trunk；2, dewatering well；21, without sand cement chimney filter；22, gravel layer；23, sediment tube；24, filter；25、
Outlet pipe；26, immersible pump；3, precipitation well group；4, connecting tube.
Specific implementation mode
For the ease of understanding the utility model, below in conjunction with Figure of description and preferred embodiment to the utility model
It does and more comprehensively, meticulously describes, but the scope of protection of the utility model is not limited to following specific examples.
Embodiment 1：
As shown in Figures 1 to 5, the dewatering device of the tunnel rich water section of the present embodiment is equipped with tunnel trunk 1 in stratum,
Dewatering device includes multiple dewatering wells 2, and dewatering well 2 is symmetrical and is equidistantly set in the stratum of 1 both sides of tunnel trunk.Specifically,
It is symmetrical refer to dewatering well 2 arrangement it is symmetrical along the center line of tunnel trunk 1, refer to equidistantly two adjacent dewatering wells 2 of homonymy it
Between distance be equal.The symmetrical dewatering well 2 that is placed equidistant with helps, by the underground water discharge in stratum, to keep tunnel trunk 1 attached
Surface layer underground water content ensures the safety of constructing tunnel, improves the construction quality of tunnel construction uniformly and in lower value.
In the present embodiment, outer ledge of the dewatering well 2 apart from tunnel trunk 1 is 2~4m, is located at 1 homonymy of tunnel trunk
The spacing of two neighboring dewatering well 2 is 10~12m.Specifically, outer ledge of the dewatering well 2 apart from tunnel trunk 1 is 2m, it is located at
The spacing of the two neighboring dewatering well 2 of 1 homonymy of tunnel trunk is 10m, and dewatering well 2 closely influences whether very much tunnel apart from tunnel trunk 1
The stability of road body construction, too far precipitation efficiency is low, effect is poor, and the distance between two neighboring dewatering well 2 closely means very much
Structural instability between the quantity of dewatering well 2 is more, therefore cost is higher and dewatering well 2, the distance between adjacent dewatering well 2 are too far
Equally exist the problem that precipitation efficiency is low, effect is poor, select rational distribution spacing that can reduce cost, at the same precipitation efficiency it is high,
Effect is good, and integrally-built stability is good.
In the present embodiment, dewatering well 2 includes no sand cement chimney filter 21 and gravel layer 22, and gravel layer 22 is coated on no sand cement
The outside of chimney filter 21.Specifically, the wall thickness without sand cement chimney filter 21 is 50mm, and a diameter of 600mm of dewatering well 2, no sand cement
The internal diameter of chimney filter 21 is 400mm.22 hole of gravel layer is larger, plays the role of permeable and filters out bulky grain, no sand cement filter
Pipe 21 is due to lacking fine aggregate, so tube body there are pinhole, plays the role of seeping water and filtering out fine grain, no sand cement filter
Water in stratum more than phreatic line can be effectively filled into dewatering well 2 by pipe 21 and the combination of gravel layer 22, and be avoided
Impurities in water is excessive, diameter is excessive causes outlet pipe 25 to block, in addition, being also acted as without sand cement chimney filter 21 and the combination of gravel layer 22
The effect of support.
In the present embodiment, the bottom of dewatering well 2 is additionally provided with sediment tube 23, and the top of sediment tube 23 is equipped with filter 24, mistake
The top of filter 24 is equipped with outlet pipe 25, and outlet pipe 25 extends to the upper outlet of dewatering well 2 all the way up, under outlet pipe 25
Portion is equipped with immersible pump 26.Sediment tube 23 plays aggregation by gravel layer 22 and without thin in the inflow dewatering well 2 of sand cement chimney filter 21
Grit and landwaste prevent gravel layer 22, are deposited object blocking without sand cement chimney filter 21 and outlet pipe 25, and filter 24 being capable of mistake
The mud and other impurities in water is filtered, prevents from blocking outlet pipe 25 or mud being caused to be extracted causing the unstable of structure, going out
Water pipe 25 is convenient for the underground water that will be extracted out discharge, and natural irrigation canals and ditches and river can be selected to be drained, trapezoid-shaped trench can also be applied
Deng, bleeding back into rich water section for dewatering well discharge water is avoided as far as possible, to improve the utilization rate of working efficiency and energy, diving
Pump 26 provides power for drainage procedure.
In the present embodiment, immersible pump 26, filter 24 and sediment tube 23 be set to water level line hereinafter, and position relationship under
It is followed successively by immersible pump 26, filter 24, sediment tube 23 down, the effect of this order of placement is convenient for extraction underground water while utilizing
Filter 24 enters precipitation by the underground water entered from sediment tube 23 in dewatering well 2 and from no sand cement chimney filter 21 and gravel layer 22
The contaminant filter in underground water in well 2 comes out, and is deposited in sediment tube 23, and the impurity such as silt is effectively prevent to block outlet pipe
25。
In the present embodiment, the drilling depth of dewatering well 2 is Hw, the elevation of hole position is H0, the inverted arch bottom of tunnel trunk 1
Elevation is H1, i.e. H0-H1For the inverted arch bottom buried depth of tunnel trunk 1, precipitation water level is H apart from inverted arch bottom2, i.e. inverted arch center bottom
The vertical range of portion's initial phreatic line immediately below it, water-head H3, i.e., immediately below inverted arch centre bottom initially
Height of water level between the initial phreatic line of 2 place vertical position of lower water level line and dewatering well is poor, and level changing amplitude is
H4, i.e., the length of the difference in height of water level line and initial water bit line after precipitation, filter 24 is H5, the length of sediment tube 23 is H6,
Drilling depth Hw=H0-H1+H2+H3+H4+H5+H6.Drilling construction is carried out using above-mentioned design scheme, construction cost can reduced
With the requirement for meeting precipitation on the basis of workload.
Embodiment 2：
The dewatering device of the tunnel rich water section of the present embodiment is substantially the same manner as Example 1, as shown in Figure 6 and Figure 7, mainly
The difference is that：In the present embodiment, multiple adjacent dewatering wells 2 form precipitation well groups 3, the dewatering well 2 in precipitation well group 3 with
The distance of the outer ledge of tunnel trunk 1 is with the axially extending direction first increases and then decreases of tunnel trunk 1.Specifically, four phases
Adjacent dewatering well 2 forms a precipitation well group 3, first dewatering well 2 and the outer ledge of tunnel trunk 1 in precipitation well group 3
Distance is 2m, and second dewatering well 2 is 3m, third dewatering well 2 and tunnel trunk at a distance from the outer ledge of tunnel trunk 1
The distance of 1 outer ledge be 4m, the 4th dewatering well 2 with the outer ledge of tunnel trunk 1 at a distance from be 3m, behind connect it is next
A precipitation well group 3.Within the scope of 2 precipitation of each dewatering well ranging from 2 center certain radius of dewatering well, using this arrangement
Mode comes the precipitation range of dewatering well 2 along the radial dispersion of tunnel trunk 1, avoids the precipitation model of adjacent dewatering well 2 as possible
The overlapping enclosed, the stratum of tunnel remotely of adjusting the distance remain to obtain preferable dewatering effect.
In the present embodiment, connecting tube 4 is equipped between symmetrical dewatering well 2.The water level of 1 both sides of tunnel trunk may be high
Low inconsistent, setting connecting tube 4 can connect symmetrical dewatering well 2, ensure 1 both sides of tunnel trunk in Precipitation Process
Precipitation Process is uniform, and SEA LEVEL VARIATION rate and height are synchronous as possible, to ensure that tunnel both sides geologic structure is stable and balances, ensures
The safety of constructing tunnel process improves the construction quality that tunnel is built.
In two above-mentioned embodiments, applying for rich water section drainage system synchronous with the driving in tunnel carries out, no
Preferably too early and too late, it is considered that face that must not be in tunnel piercing, which not yet arrives at hydrous fluids and just proceeds by precipitation, to be grasped
Make, while the laying of anchor bar of waterproof plate in tunnels can not be later than.Since in tunnel rich water section Precipitation Process, underground water plane can be caused
Decline, the deformation of tunnel structure may be caused, and the stresses re-distribution of the Rock And Soil in the corresponding zone of influence and deformation, therefore
The country rock in tunnel and the zone of influence should be carried out in the construction process to monitor comprehensively and in real time, prevent the hair of engineering accident
It is raw.
Although the utility model has been disclosed with preferred embodiment as above, it is not limited to the utility model.It is any
Those skilled in the art, in the case where not departing from technical solutions of the utility model range, all using the disclosure above
Technology contents many possible changes and modifications are made to technical solutions of the utility model, or be revised as the equivalent of equivalent variations
Embodiment.Therefore, every content without departing from technical solutions of the utility model, according to the utility model technical spirit to above real
Any simple modifications, equivalents, and modifications that example is done are applied, should all be fallen in the range of technical solutions of the utility model are protected.
Claims (9)
1. a kind of dewatering device of tunnel rich water section, tunnel trunk (1) is equipped in stratum, it is characterised in that：The precipitation dress
It sets including multiple dewatering wells (2), the dewatering well (2) is symmetrical and is equidistantly set in the stratum of the tunnel trunk (1) both sides,
Multiple adjacent dewatering wells (2) form precipitation well groups (3), the dewatering well (2) in the precipitation well group (3) and the tunnel
The distance of the outer ledge of barrel (1) is with the axially extending direction first increases and then decreases of tunnel trunk (1).
2. the dewatering device of rich water section in tunnel according to claim 1, it is characterised in that：Dewatering well (2) distance
The outer ledge of the tunnel trunk (1) is 2~4m.
3. the dewatering device of rich water section in tunnel according to claim 2, it is characterised in that：Positioned at the tunnel trunk
(1) spacing of the two neighboring dewatering well (2) of homonymy is 10~12m.
4. the dewatering device of rich water section in tunnel according to claim 1, it is characterised in that：The symmetrical precipitation
Connecting tube (4) is equipped between well (2).
5. the dewatering device of rich water section in tunnel according to claim 1, it is characterised in that：The dewatering well (2) includes
Without sand cement chimney filter (21) and gravel layer (22), the gravel layer (22) is coated on the outside of the no sand cement chimney filter (21).
6. the dewatering device of rich water section in tunnel according to claim 5, it is characterised in that：The bottom of the dewatering well (2)
Portion is additionally provided with sediment tube (23), and the top of the sediment tube (23) is equipped with filter (24), is set above the filter (24)
There are outlet pipe (25), the outlet pipe (25) to extend to the upper outlet of dewatering well (2) all the way up, the outlet pipe (25)
Lower part is equipped with immersible pump (26).
7. the dewatering device of rich water section in tunnel according to claim 6, it is characterised in that：The immersible pump (26), mistake
Filter (24) and sediment tube (23) are set to water level line or less.
8. the dewatering device of rich water section in tunnel according to claim 7, it is characterised in that：The dewatering well (2) it is straight
Diameter is 600~650mm, and the internal diameter of the no sand cement chimney filter (21) is 400~420mm, the no sand cement chimney filter (21)
Wall thickness is 50~60mm.
9. the dewatering device of rich water section in tunnel according to claim 6, it is characterised in that：The brill of the dewatering well (2)
Hole depth is Hw, the elevation of hole position is H0, the elevation of the inverted arch bottom of the tunnel trunk (1) is H1, precipitation water level is apart from inverted arch
Bottom is H2, water-head H3, level changing amplitude H4, the length of the filter (24) is H5, the length of the sediment tube (23)
Degree is H6, drilling depth Hw=H0-H1+H2+H3+H4+H5+H6。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820193455.3U CN207892652U (en) | 2018-02-05 | 2018-02-05 | A kind of dewatering device of tunnel rich water section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820193455.3U CN207892652U (en) | 2018-02-05 | 2018-02-05 | A kind of dewatering device of tunnel rich water section |
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| CN207892652U true CN207892652U (en) | 2018-09-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723384A (en) * | 2019-01-29 | 2019-05-07 | 中国建筑第七工程局有限公司 | With pipe at well dewatering construction engineering method |
| CN113217097A (en) * | 2021-05-19 | 2021-08-06 | 中国建筑第二工程局有限公司 | Deep open type comprehensive dewatering method and water pumping device for subsurface tunnel in water-rich composite stratum |
-
2018
- 2018-02-05 CN CN201820193455.3U patent/CN207892652U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723384A (en) * | 2019-01-29 | 2019-05-07 | 中国建筑第七工程局有限公司 | With pipe at well dewatering construction engineering method |
| CN113217097A (en) * | 2021-05-19 | 2021-08-06 | 中国建筑第二工程局有限公司 | Deep open type comprehensive dewatering method and water pumping device for subsurface tunnel in water-rich composite stratum |
| CN113217097B (en) * | 2021-05-19 | 2022-06-24 | 中国建筑第二工程局有限公司 | Deep open type comprehensive dewatering method and water pumping device for subsurface tunnel in water-rich composite stratum |
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