CN108843334A - A kind of method of reinforcing building lower section rich water soft soil layer service channel - Google Patents
A kind of method of reinforcing building lower section rich water soft soil layer service channel Download PDFInfo
- Publication number
- CN108843334A CN108843334A CN201810628517.3A CN201810628517A CN108843334A CN 108843334 A CN108843334 A CN 108843334A CN 201810628517 A CN201810628517 A CN 201810628517A CN 108843334 A CN108843334 A CN 108843334A
- Authority
- CN
- China
- Prior art keywords
- service channel
- freezing
- soil layer
- rich water
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000002689 soil Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 12
- 238000007710 freezing Methods 0.000 claims abstract description 42
- 230000008014 freezing Effects 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims description 10
- 239000012267 brine Substances 0.000 claims description 5
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 5
- 238000009412 basement excavation Methods 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 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
- E21D9/04—Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for
-
- 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)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Soil Sciences (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention belongs to service channel technical fields, and in particular to a kind of method of reinforcing building lower section rich water soft soil layer service channel comprises the steps of：（1）It drills at service channel excavated section, forms several freezing channels through service channel, and carry out Freezing Station installation；（2）Freezing pipe is installed in freezing channel and starts to freeze, completion is actively freezed and safeguard to freeze after thermometric；The present invention is at low cost, saves manpower, safe and efficient.
Description
Technical field
The invention belongs to service channel technical fields, and in particular to a kind of reinforcing building lower section rich water soft soil layer contact
The method in channel.
Background technique
In city rail project, section or so line one service channel of standing meter as life-saving emergency contact channel, channel
Construction method generallys use shallow mining method.Compared to mountain tunnel, service channel stratum is generally V grades of country rocks or even VI grades are enclosed
Rock, soil layer intensity is low, and boring construction risk is big.Therefore stratum consolidation method is generallyd use before excavating and carries out soil to range stratum is excavated
Body is reinforced, and soil layer intensity and impervious coefficient reach certain numerical value rear and excavated.
Since city rail project construction place many places are in building dense area, service channel has building when excavating point top
In the presence of, and stratum is fast changing, when local layer soil body is weak soil and rich water, conventional stratum reinforcement means not can guarantee boring construction
Subsidence value in the process will affect and cover building existing for earth's surface, thereby increases and it is possible to soil body cave-in accident occurs, in addition, existing
Excavation service channel mode be the section part needed from service channel, first excavate the top of service channel, then to excavate contact logical
The lower section in road needs manpower to excavate, increases duration and manpower significantly since space is smaller when excavating above service channel
Cost, therefore the prior art needs further improve.
Summary of the invention
It is safe and efficient to reinforce rich water below building the purpose of the present invention is to provide a kind of at low cost, saving manpower
The method of soft soil layer service channel.
Based on above-mentioned purpose, the present invention is adopted the following technical scheme that：
A kind of method of reinforcing building lower section rich water soft soil layer service channel, comprises the steps of：
（1）It drills at service channel excavated section, forms several freezing channels through service channel, and carry out Freezing Station peace
Dress；
（2）Freezing pipe is installed in freezing channel and starts to freeze, completion is actively freezed and safeguard to freeze after thermometric；
（3）Mini-valve tube is set in surface buildings basal perimeter, the mini-valve tube is located at the top of service channel；
（4）Service channel opening sets up interim pre-loaded support struts, and brine freezing liquid is filled in freezing pipe, and Freezing Station makes freezing pipe
In freezing liquid persistently cool down, to service channel full face tunneling, formed and excavate channel.
Further, the step（1）The length direction of middle freezing channel and the length direction of service channel are identical.
Further, the step（1）In several freezing channels enclose circular passage, step（4）In excavation it is logical
Road is set in circular passage.
Further, the brine freezing liquid minimum temperature is -10 DEG C to -28 DEG C.
Further, the step（3）Middle mini-valve tube reinforced radius is 1.5m, spacing 2m, and mini-valve tube sets position
With building gathering 1-2m, the angle of the perpendicular bisector of the length direction and earth's surface of mini-valve tube is 15 °.
Construction period of the invention is short, minimizes shield receives risk, quality is easy to guarantee, construction investment economical rationality, this
Invention also avoids ground in the case of covering building from reinforcing existing equipment and the conflicting situation of building；It can also minimize
The Mining Method of rich water soft soil layer excavates risk, what the Sand that may occur when avoiding construction or even end soil body collapsed
It may；The present invention saves construction cost using salt water as freezing liquid, and soil strength and impervious coefficient are high after freezing, make to construct
Quality is protected.
Detailed description of the invention
Fig. 1 is the location diagram of freezing channel and track；
Fig. 2 is the location diagram for excavating channel and circular passage；
Fig. 3 is the location diagram of building and mini-valve tube；
Fig. 4 is the location diagram of building and service channel.
Specific embodiment
The method of rich water soft soil layer service channel 2, feature exist below a kind of reinforcing building as shown in Figs 1-4
In comprising the steps of：
（1）It drills at 2 excavated section of service channel, forms several freezing channels 1 through service channel 2, and freezed
It stands installation, the length direction of the freezing channel 1 is identical as the length direction of service channel 2, and several freezing channels 1 enclose
Circular passage, service channel 2 is between two tracks 3；
（2）Freezing pipe is installed in freezing channel 1 and starts to freeze, completion is actively freezed and safeguard to freeze after thermometric；
（3）Mini-valve tube 5 is set in 7 building of earth's surface, 6 basal perimeter, the mini-valve tube 5 is located at 2 top of service channel, described
5 reinforced radius of mini-valve tube be 1.5m, spacing 2m, mini-valve tube 5 sets position and 6 gathering 1-2m of building, the length of mini-valve tube 5
The angle for spending the perpendicular bisector of direction and earth's surface 7 is 15 °；
（4）2 opening of service channel sets up interim pre-loaded support struts, and brine freezing liquid, the salt water cooling are filled in freezing pipe
Freezing liquid minimum temperature is -10 DEG C to -28 DEG C, and Freezing Station cools down the freezing liquid in freezing pipe persistently, to 2 tunneling boring of service channel
It excavates, is formed and excavate channel 4, excavate channel 4 and be set in circular passage.
Claims (5)
1. a kind of method for reinforcing rich water soft soil layer service channel below building, which is characterized in that comprise the steps of：
（1）It drills at service channel excavated section, forms several freezing channels through service channel, and carry out Freezing Station peace
Dress；
（2）Freezing pipe is installed in freezing channel and starts to freeze, completion is actively freezed and safeguard to freeze after thermometric；
（3）Mini-valve tube is set in surface buildings basal perimeter, the mini-valve tube is located at the top of service channel；
（4）Service channel opening sets up interim pre-loaded support struts, and brine freezing liquid is filled in freezing pipe, and Freezing Station makes freezing pipe
In freezing liquid persistently cool down, to service channel full face tunneling, formed and excavate channel.
2. the method according to claim 1 for reinforcing rich water soft soil layer service channel below building, which is characterized in that
The step（1）The length direction of middle freezing channel and the length direction of service channel are identical.
3. the method according to claim 1 for reinforcing rich water soft soil layer service channel below building, which is characterized in that
The step（1）In several freezing channels enclose circular passage, step（4）In excavation channel be set in circular passage
It is interior.
4. the method according to claim 1 for reinforcing rich water soft soil layer service channel below building, which is characterized in that
The brine freezing liquid minimum temperature is -10 DEG C to -28 DEG C.
5. the method according to claim 1 for reinforcing rich water soft soil layer service channel below building, which is characterized in that
The step（3）Middle mini-valve tube reinforced radius is 1.5m, spacing 2m, and mini-valve tube sets position and building gathering 1-2m,
The angle of the perpendicular bisector of the length direction and earth's surface of mini-valve tube is 15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628517.3A CN108843334A (en) | 2018-06-19 | 2018-06-19 | A kind of method of reinforcing building lower section rich water soft soil layer service channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628517.3A CN108843334A (en) | 2018-06-19 | 2018-06-19 | A kind of method of reinforcing building lower section rich water soft soil layer service channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108843334A true CN108843334A (en) | 2018-11-20 |
Family
ID=64202630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810628517.3A Withdrawn CN108843334A (en) | 2018-06-19 | 2018-06-19 | A kind of method of reinforcing building lower section rich water soft soil layer service channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108843334A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612533A (en) * | 2018-05-04 | 2018-10-02 | 淮南矿业(集团)有限责任公司 | Dial the construction method in gate segment tunnel |
| CN110454170A (en) * | 2019-08-19 | 2019-11-15 | 中铁十二局集团有限公司 | Tunnel connection channel construction method based on freezing process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806257A (en) * | 2015-04-27 | 2015-07-29 | 中国水利水电第七工程局有限公司 | Sandy gravel stratum shield construction cap-type ground advance reinforcement structure and sandy gravel stratum shield construction cap-type ground advance reinforcement method |
| CN106089214A (en) * | 2016-06-21 | 2016-11-09 | 中铁十局集团第三建设有限公司 | Service channel manual pipe jacking reinforced construction method |
-
2018
- 2018-06-19 CN CN201810628517.3A patent/CN108843334A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806257A (en) * | 2015-04-27 | 2015-07-29 | 中国水利水电第七工程局有限公司 | Sandy gravel stratum shield construction cap-type ground advance reinforcement structure and sandy gravel stratum shield construction cap-type ground advance reinforcement method |
| CN106089214A (en) * | 2016-06-21 | 2016-11-09 | 中铁十局集团第三建设有限公司 | Service channel manual pipe jacking reinforced construction method |
Non-Patent Citations (1)
| Title |
|---|
| 张晓锋: "富水圆砾地层联络通道加固选型及应用", 《石家庄铁道大学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612533A (en) * | 2018-05-04 | 2018-10-02 | 淮南矿业(集团)有限责任公司 | Dial the construction method in gate segment tunnel |
| CN110454170A (en) * | 2019-08-19 | 2019-11-15 | 中铁十二局集团有限公司 | Tunnel connection channel construction method based on freezing process |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181120 |