CN108119150A - The method of dark-excavated passageway in weak soil - Google Patents
The method of dark-excavated passageway in weak soil Download PDFInfo
- Publication number
- CN108119150A CN108119150A CN201810005580.1A CN201810005580A CN108119150A CN 108119150 A CN108119150 A CN 108119150A CN 201810005580 A CN201810005580 A CN 201810005580A CN 108119150 A CN108119150 A CN 108119150A
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- China
- Prior art keywords
- dark
- weak soil
- water pipe
- reinforcing layer
- passageway
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Links
- 239000002689 soil Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 238000010276 construction Methods 0.000 claims abstract description 12
- 238000012407 engineering method Methods 0.000 claims abstract description 11
- 238000007710 freezing Methods 0.000 claims abstract description 11
- 230000008014 freezing Effects 0.000 claims abstract description 11
- 239000008399 tap water Substances 0.000 claims abstract description 6
- 235000020679 tap water Nutrition 0.000 claims abstract description 6
- 230000005641 tunneling Effects 0.000 claims description 11
- 239000004744 fabric Substances 0.000 claims description 4
- 239000011435 rock Substances 0.000 abstract description 5
- 238000009412 basement excavation Methods 0.000 abstract description 4
- 238000004062 sedimentation Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The method of dark-excavated passageway in a kind of weak soil provided by the invention,Upper strata soil property reinforces to form the first reinforcing layer using comprehensive high-pressure injection engineering method in place of needing to dig through,Point out that subsoil matter reinforces to form the second reinforcing layer using freezing needing to dig through,Lower floor uses freezing,So that weak soil soil property is hard,Excavation passage is then carried out between the two layers,Lower floor's weak soil will not be caused since the flowing with underground water is broken ground in construction and forms various collapse,The strength and stability of country rock when ensuring to block underground water and excavate,The fabulous settlement issues for controlling tap water pipeline of this method,According to monitoring situation,The settlement Control of tap water pipeline is within 2mm,Meet the settlement request of Running-water Company's proposition,Ensure safety of the running water pipe during boring construction,So that the sedimentation of running water pipe and surface road etc.,It is in slave mode.
Description
Technical field
The present invention relates to Mined field, the method for dark-excavated passageway in more particularly to a kind of weak soil.
Background technology
As Chinese Urbanization pace of construction is constantly accelerated, urban land growing tension, the exploitation of underground deep space engineering
The development trend of urban planning has been increasingly becoming, has more and more needed to be applied with subsurface excavation method in Process of Urban Development
Work, such as：Shallow burial hidden digging, per-fore pouring liquid with small pipe method, pipe shed support method, surface grout injection etc. means.Below sensitive pipeline,
And it is closer to the distance in the case of, there are certain uncertainties for more than reinforcing mode.
It, can be softer in soil property and in the presence of can not dismantle but pole it is therefore desirable to invent a kind of method of dark-excavated passageway in weak soil
The method that the underground of its sensitive pipeline is excavated into row of channels.
The content of the invention
To solve the above problems, the present invention provides a kind of method of dark-excavated passageway in weak soil, in place of needing to dig through
Upper strata soil property is reinforced using comprehensive high-pressure injection engineering method (MJS, Metro JetSystem), and lower floor is pointed out needing to dig through
Soil property is reinforced using freezing, then excavates passage.
In order to achieve the above objectives, in a kind of weak soil provided by the invention dark-excavated passageway method, on the passage of required tunneling
Side has running water pipe, and below the running water pipe, one side is an exit passageway, and opposite side is rectangular channel, in vertical side
Upwards, the first reinforcing layer is formed using comprehensive high-pressure injection engineering method around the running water pipe, below the exit passageway,
It constructs to form the second reinforcing layer using freezing, the dark-excavated passageway between first reinforcing layer and second reinforcing layer.
Preferably, the method for forming the first reinforcing layer is：On the ground above running water pipe, where running water pipe
Position both sides piling cloth hole implement comprehensive high-pressure injection engineering method.
Preferably, stake footpath is 2000mm after pile, the maximum width of intersection is 900mm between holes, holes it
Between distance of center circle be 1100mm.
Preferably, hole number is at least 45, it is distributed between the exit passageway and the rectangular channel.
Preferably, the rectangular channel is constructed for rectangular top pipe.
Preferably, the hole depth is 2m~8m.
Compared with prior art, the beneficial effects of the invention are as follows：The side of dark-excavated passageway in a kind of weak soil provided by the invention
Method, upper strata soil property is reinforced using comprehensive high-pressure injection engineering method (MJS) and forms the first reinforcing layer in place of needing to dig through, and is being needed
It digs through and points out that subsoil matter reinforces to form the second reinforcing layer using freezing, such upper strata has complicated running water pipe
For soil layer due to the use of MJS method post-reinforcings, soil property is hard, and construction thereunder does not interfere with running water pipe, and lower floor uses freezing,
So that weak soil soil property is hard, then carry out excavation passage between the two layers, will not cause lower floor's weak soil due to construction break ground and
The flowing of underground water and form various collapse, it is ensured that block underground water and excavate when country rock strength and stability, this method
The fabulous settlement issues for controlling tap water pipeline, according to monitoring situation, the settlement Control of tap water pipeline within 2mm,
Meet the settlement request of Running-water Company's proposition, it is ensured that safety of the running water pipe during boring construction, so that originally
The sedimentation of water pipe and surface road etc., is in slave mode.
Description of the drawings
Fig. 1 is construction schematic diagram provided by the invention；
Fig. 2 uses comprehensive high-pressure injection engineering method cloth hole distribution map to be provided by the invention.
In figure：1- exit passageways, 2- rectangular channels, 3- running water pipes, 4-MJS holes, 5- reinforce blind area, 6- tunneling sections.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
It refer to Fig. 1 to Fig. 2, the method for dark-excavated passageway in a kind of weak soil provided by the invention, on the passage of required tunneling
Side has running water pipe 3, and below the running water pipe 3, one side is an exit passageway 1, and opposite side is rectangular channel 2, perpendicular
Nogata is upward, around the running water pipe 3 using comprehensive high-pressure injection engineering method (MJS) formed the first reinforcing layer, it is described go out
1 lower section of mouth passage, constructs to form the second reinforcing layer using freezing, between first reinforcing layer and second reinforcing layer
Dark-excavated passageway.
Specifically, Fig. 1, No. 2 mouthfuls of ground that this engineering is reserved for Jin Mao squares with Metro Line 1 in Nanjing Black Warrior door station be refer to
The communicating passage of lower entrance, the outlet of No. 2 mouth undergrounds are then the exit passageway 1 of the present embodiment, and a sheet is dug below Jin Mao squares
The rectangular channel 2 that embodiment provides, the rectangular channel 2 are constructed using rectangular top pipe, and rectangular top pipe uses side close to tip position
It is docked to the mode for the boring construction that punches with existing subway station entrance namely exit passageway 1, docking mode namely dark
It digs through, is defined herein as tunneling section 6.
It is the weak soil that silty clay and very soft sill clay are mixed to form that this engineering, which relates generally to soil layer,.
There is the running water pipe 3 of a diameter 1000mm at 6 top 1.1m of tunneling section, the running water pipe 3 is of the remote past (to be built
The about sixties in last century), it is connected using bell and spigot, quite sensitive, and be city main pipeline, it can not change and move.
Specifically tunneling method is：Fig. 2 is refer to, makees MJS reinforcings on the ground in the location where running water pipe 3, MJS adds
Gu method is also comprehensive high-pressure injection engineering method, it is broadly divided into and cuts the hole stage and wave injection phase, therefore cutting the hole stage just
In the ground Shang BuMJS holes 4 in the location where running water pipe 3, the distribution mode in MJS holes 4 is to divide around this section of running water pipe 3
Cloth is distributed mainly along this section of the axial of running water pipe 3, but also has radial distribution of several holes along running water pipe 3, owns
MJS holes 4 be all located at the top of tunneling section 6, pore-forming back aperture is 2000mm, and the maximum width of intersection is between holes
900mm, distance of center circle is 1100mm between holes, and the depth direction in hole is vertically downward, if being furnished with pipeline below the hole, the hole
It is deep-controlled in 2m, if without pipeline below the hole, hole depth control is furnished with 45 MJS altogether in 8m, the present embodiment
Hole 4.
The first reinforcing layer is formed after 6 top of tunneling section is reinforced using MJS method for strengthening, then 6 lower section of tunneling section belongs at this time
Blind area 5 is reinforced, the section is due to close underground water, and soil property is soft, also contains rock stratum, therefore after the first reinforcing layer is formed,
It reinforces to form the second reinforcing layer using half frame row liquid nitrogen freezing to reinforcing blind area 5, so that it is guaranteed that blocking underground water and enclosing when excavating
The strength and stability of rock.
Finally the tunneling section 6 between the first reinforcing layer and the second reinforcing layer carries out dark-excavated passageway.
The method of dark-excavated passageway in a kind of weak soil provided by the invention, upper strata soil property uses full side in place of needing to dig through
Position high-pressure injection engineering method (MJS), which is reinforced, forms the first reinforcing layer, points out that subsoil matter is reinforced using freezing needing to dig through
Forming the second reinforcing layer, such upper strata has the soil layer of complicated running water pipe 3 due to the use of MJS method post-reinforcings, and soil property is hard,
Construction does not interfere with running water pipe 3 thereunder, and lower floor uses freezing so that weak soil soil property is hard, then two layers it
Between carry out excavation passage, lower floor's weak soil will not be caused since the flowing with underground water is broken ground in construction and forms various collapse, it is ensured that
The strength and stability of country rock, the fabulous sedimentation for controlling tap water pipeline of this method are asked when blocking underground water and excavating
Topic, according to monitoring situation, the settlement Control of 3 line of running water pipe meets the settlement request of Running-water Company's proposition within 2mm,
Ensure safety of the running water pipe 3 during boring construction, so that the sedimentation of running water pipe 3 and surface road etc.,
In slave mode.
Obviously, those skilled in the art can carry out invention spirit of the various modification and variations without departing from the present invention
And scope.If these modifications and changes of the present invention belongs within the scope of the claims in the present invention and its equivalent technologies, then
The present invention is also intended to including these modification and variations.
Claims (6)
1. a kind of method of dark-excavated passageway in weak soil, the passage top of required tunneling has running water pipe, in the running water pipe
Lower section, one side are an exit passageway, and opposite side is rectangular channel, which is characterized in that in the vertical direction, around the tap water
Pipe forms the first reinforcing layer using comprehensive high-pressure injection engineering method, below the exit passageway, constructs to be formed using freezing
Second reinforcing layer, the dark-excavated passageway between first reinforcing layer and second reinforcing layer.
2. the method for dark-excavated passageway in weak soil as described in claim 1, which is characterized in that the method for forming the first reinforcing layer
For：On the ground above running water pipe, implement comprehensive high-pressure injection in the position both sides piling cloth hole where running water pipe
Engineering method.
3. the method for dark-excavated passageway in weak soil as claimed in claim 2, which is characterized in that after pile stake footpath be 2000mm, two
The maximum width of intersection is 900mm between hole, and distance of center circle is 1100mm between holes.
4. the method for dark-excavated passageway in weak soil as claimed in claim 2, which is characterized in that hole number is at least 45, distribution
Between the exit passageway and the rectangular channel.
5. the method for dark-excavated passageway in weak soil as claimed in claim 2, which is characterized in that the rectangular channel is rectangular top pipe
Construction.
6. the method for dark-excavated passageway in weak soil as claimed in claim 2, which is characterized in that the hole depth is 2m~8m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005580.1A CN108119150B (en) | 2018-01-03 | 2018-01-03 | The method of dark-excavated passageway in weak soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005580.1A CN108119150B (en) | 2018-01-03 | 2018-01-03 | The method of dark-excavated passageway in weak soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108119150A true CN108119150A (en) | 2018-06-05 |
| CN108119150B CN108119150B (en) | 2019-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810005580.1A Active CN108119150B (en) | 2018-01-03 | 2018-01-03 | The method of dark-excavated passageway in weak soil |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296371A (en) * | 2018-11-29 | 2019-02-01 | 南京林业大学 | MJS method and horizontal freezing joint reinforcement pressure-bearing rich water arenaceous stratum overlap the system and its construction method that section is worn under station |
| CN111593726A (en) * | 2020-05-19 | 2020-08-28 | 南京林业大学 | Joint reinforcement method for underground tunnel penetrating sensitive pipeline of water-rich stratum and butt joint of existing structure MJS + artificial freezing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012215025A (en) * | 2011-04-01 | 2012-11-08 | Kajima Corp | Pipe roof construction method |
| CN104033160A (en) * | 2014-06-11 | 2014-09-10 | 同济大学 | Novel support method applicable to shallow-buried subsurface tunnel of soft soil stratum |
| CN104712340A (en) * | 2015-01-21 | 2015-06-17 | 同济大学 | Contact passage construction method using combination of MJS method and freezing method |
| CN205778878U (en) * | 2016-05-13 | 2016-12-07 | 中铁二十三局集团第一工程有限公司 | A kind of supporting construction being applicable to large-section box culvert jacking crossing construction |
| CN106677161A (en) * | 2016-12-29 | 2017-05-17 | 中铁隧道勘测设计院有限公司 | Treatment method for soft soil foundation of existing shield rectangular tunnel |
-
2018
- 2018-01-03 CN CN201810005580.1A patent/CN108119150B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012215025A (en) * | 2011-04-01 | 2012-11-08 | Kajima Corp | Pipe roof construction method |
| CN104033160A (en) * | 2014-06-11 | 2014-09-10 | 同济大学 | Novel support method applicable to shallow-buried subsurface tunnel of soft soil stratum |
| CN104712340A (en) * | 2015-01-21 | 2015-06-17 | 同济大学 | Contact passage construction method using combination of MJS method and freezing method |
| CN205778878U (en) * | 2016-05-13 | 2016-12-07 | 中铁二十三局集团第一工程有限公司 | A kind of supporting construction being applicable to large-section box culvert jacking crossing construction |
| CN106677161A (en) * | 2016-12-29 | 2017-05-17 | 中铁隧道勘测设计院有限公司 | Treatment method for soft soil foundation of existing shield rectangular tunnel |
Non-Patent Citations (1)
| Title |
|---|
| 韩会山: "MJS工法在管线保护中的应用", 《城市建筑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296371A (en) * | 2018-11-29 | 2019-02-01 | 南京林业大学 | MJS method and horizontal freezing joint reinforcement pressure-bearing rich water arenaceous stratum overlap the system and its construction method that section is worn under station |
| CN111593726A (en) * | 2020-05-19 | 2020-08-28 | 南京林业大学 | Joint reinforcement method for underground tunnel penetrating sensitive pipeline of water-rich stratum and butt joint of existing structure MJS + artificial freezing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108119150B (en) | 2019-11-26 |
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