CN108221970A - A kind of urban road under-traverse tunnel and city underground crossed construction technology - Google Patents
A kind of urban road under-traverse tunnel and city underground crossed construction technology Download PDFInfo
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- CN108221970A CN108221970A CN201810043994.3A CN201810043994A CN108221970A CN 108221970 A CN108221970 A CN 108221970A CN 201810043994 A CN201810043994 A CN 201810043994A CN 108221970 A CN108221970 A CN 108221970A
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- tunnel
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention discloses a kind of urban road under-traverse tunnel and city underground crossed construction technology, includes the following steps：Step 1：Foundation stabilization；Step 1.1：In place, the sinking of spudding according to Design Orientation position progress three axes agitating pile；Step 1.2：When drill bit arrival design height, start stirring 1 2min of whitewashing, brill is carried after the completion of whitewashing；Step 1.3：Sunk, whitewashed and put forward driller's sequence successively along Design Orientation position；Step 2：Deformation monitoring device is arranged in the subway tunnel and foundation pit periphery of preparation excavation；Step 3：Excavation of foundation pit；Step 3.1：Tunnel structure in foundation pit is carried out being divided into section for 4 meters by excavation section by section by width；Step 3.2：Piecewise carry out earth excavation, supporting and bed course；Step 3.3：Concrete floor pouring construction；Step 3.3：Preloading construction is carried out on concrete floor.Urban road under-traverse tunnel of the present invention can effectively prevent the protuberance of subway tunnel duct piece float upward and subway tunnel surrounding soil with city underground crossed construction technology.
Description
Technical field
The present invention relates to urban road under-traverse tunnel technical fields, and in particular to a kind of urban road under-traverse tunnel and city
Subway crossed construction technology.
Background technology
When municipal tunnel is constructed with subway tunnel skewed crossing section, with the excavation of top municipal tunnel soil mass of foundation pit, subway
The soil body that tunnel upper is stacked gradually is unloaded, and be easy to cause lower part subway tunnel duct piece float upward and surrounding soil protuberance, seriously
Endanger safety of subway operation；Such as using conventional construction technical method, tunnel basis is reinforced and underground railway track is reinforced, nothing
Method ensures that subway segment is non-rising, and subway is currently in operation state, and track can not be carried out and reinforced.
For example, Chinese invention patent application file 201110123666.2 is disclosed under a kind of shallow buried covered excavation longspan tunnel
Existing high-speed railway construction method is worn, it is characterized in that this method includes following construction procedure：1) advance support and pre-reinforcement processing
According to geology forecast result, the country rock for surrounding of holing is treated in advance, is reinforced using pipe canopy, ductule, and it is strong to improve country rock
Degree, self-stable ability；2) partial excavation, short-delay blasting tunnel use partial excavation, excavation method based on three benching tunnelling methods, and according to
The situation and actual monitored of country rock, which measure situation, to be increased the interim inverted arch of top bar, central post and carries out top bar to be divided to two excavations
Or by CD method tissue excavation supporting operations；Simultaneously in order to be further reduced country rock convergent deformation, get out of a predicament or an embarrassing situation in three steps construction when
It is divided to or so two staggeredly to excavate；The rock emulsion explosive of high brisance, low blasting speed is selected, is fried in the construction process using small medicine coil
Medicine, more perforatings, few powder charge, periphery hole spacing are controlled within 50cm, and other borehole spacing controls are within 90cm, borehole depth
For 1.2m~1.6m, powder charge line density is controlled in 0.5kg/m；It is be segmented using short-delay blasting more, to single hop explosive consumption into
Row control not only also applies spaced loading side using the method for increasing explosion hop count on initiation net in single blasthole endoporus
Method reduces primary neat quick-fried dose, it is ensured that the explosive charge of detonation within 10kg, is shaken with effective controlled blasting simultaneously in per 50ms
Superposition；Strengthen monitoring of blasting vibration during bursting work, blasting vibration velocity control is made to be run in the joint debugging of earth's surface railway
In allowed band；3) short step construction technology is used in the construction of short step excavation supporting construction, shaped steel arch is carried out in time after excavation
Frame supporting, length of bench control is in 4~5m, and for inverted arch apart from face no more than 35m, lining cutting is not more than 60m apart from face；
The loss of strictly control underground water is needed during above-mentioned construction and excavation, in advance using pipe canopy, grouting with small pipe, and according to excavation
The groundwater condition of exposure, using curtain-grouting, Full-face pouring and radial grouting, these slurry injection techniques block underground water for selection
Seepage channel, control underground water scatter and disappear, the type and proportioning of grouting serous fluid, according to the water yield situation of underground water selection adopt
With cement, waterglass dual slurry or common sealing chemical grout, oiliness foaming polyurethane improves the effect of pre-grouting sealing
Fruit；Construction monitoring in above-mentioned work progress is monitored using automatic, high precision and fixed inkstone absolute altitude accuracy monitoring method, i.e., in height
After fast railroad track closing, high-precision light is laid along the high-speed railway in tunnel excavation axis and tunnel excavation coverage
Fine grating static level, fiber grating bending-type bidirectional displacement sensor, the quasi-distributed temperature sensor of fiber grating, pass through
Monitoring data are transmitted to main control computer by optical fiber in time, find the situation of change of earth's surface track in time；Simultaneously in earth's surface track
It is upper to lay fixed reflecting prism, observe the exception of earth's surface track in time by Trigonometric Leveling with high precision total station
Variation, it is ensured that find the influence that under-traverse tunnel is constructed to earth's surface high speed railway track in time；It is meanwhile perfect inside constructing tunnel
Monitoring system, in addition to traditional country rock convergence and Vault settlement deformation monitoring is carried out, also using geological drilling rig in tunnel excavation model
It encloses both sides and is drilled with water level monitoring hole, use the lost situation of water-level gauge monitoring underground water；Soil is buried between country rock and supporting construction
Pressure cell changes the soil pressure of structure for measuring the soil body, grasps the situation of change of country rock internal stress in due course.
Existing high-speed railway construction method is worn in currently available technology under shallow buried covered excavation longspan tunnel, it is impossible to effective
Tunnel basis and underground railway track are reinforced.
Based on as above technical problem of the existing technology, the present inventor combines experiences of construction and management for many years, proposes one
Kind urban road under-traverse tunnel and city underground crossed construction technology.
Invention content
The present invention provides a kind of urban road under-traverse tunnel and city underground crossed construction technology, is added using rational ground
Gu and heap support method can effectively prevent the protuberance of subway tunnel duct piece float upward and subway tunnel surrounding soil.
The present invention is achieved through the following technical solutions：
A kind of urban road under-traverse tunnel and city underground crossed construction technology, include the following steps：
Step 1：Foundation stabilization；
Step 1.1：In place, the sinking of spudding according to Design Orientation position progress three axes agitating pile；
Step 1.2：When drill bit arrival design height, start stirring whitewashing 1-2min, brill is carried after the completion of whitewashing；
Step 1.3：Sunk, whitewashed and put forward driller's sequence successively along Design Orientation position, the work until three axes agitating pile is constructed
Sequence is completed；
Step 2：In subway tunnel and prepare the foundation pit periphery excavated arrangement deformation monitoring device, pass through electrical digital control instrument
Device continues to monitor in subway tunnel and prepares the deformation on the foundation pit periphery excavated；
Step 3：Excavation of foundation pit；
Step 3.1：Tunnel structure in foundation pit is carried out being divided into section for 4 meters by excavation section by section by width；
Step 3.2：According to the division of step 3.1, piecewise carry out earth excavation, supporting and bed course；
Step 3.3：Treat that bed course work is completed in foundation pit, carries out concrete floor pouring construction, wherein, pour the deadline
Control is within 3 days；
Step 3.3：Preloading construction is carried out on concrete floor, wherein, the weight of preloading is prefabricated reinforced concrete block.
Further, the speed that brill is carried in the step 1.2 is less than 0.5m/min.
Further, earth excavation carries out the excavation of the earthwork using backhoe digging machine and has bad luck in the step 3.2.
Further, the technique that the successively preloading of prefabricated reinforced concrete block is used in the step 3.3.
Further, the weight of prefabricated reinforced concrete block used in the step 3.3 is 5t.
Further, preloading construction is carried out using gantry crane lifting prefabricated reinforced concrete block in the step 3.3.
Further, the speed that brill is carried in the step 1.2 is 0.35m/min.
Further, it carries out in subway tunnel and prepares using robot measurement and/or hydrostatic level in the step 2
The deformation detection on the foundation pit periphery of excavation.
Compared with prior art, superior effect of the invention is：
Urban road under-traverse tunnel of the present invention and city underground crossed construction technology, by the way that ground is reasonably configured
The step of reinforcing and preloading, can effectively prevent the subway tunnel duct piece float upward in under-traverse tunnel and city underground crossed construction
With the protuberance of subway tunnel surrounding soil.
Specific embodiment
The specific embodiment of the invention is described in further detail below.
Embodiment 1
A kind of urban road under-traverse tunnel and city underground crossed construction technology, mainly include the following steps：
Step 1：Foundation stabilization；
Step 1.1：In place, the sinking of spudding according to Design Orientation position progress three axes agitating pile；
Step 1.2：When drill bit arrival design height, start stirring whitewashing 1-2min, brill is carried after the completion of whitewashing；
Step 1.3：Sunk, whitewashed and put forward driller's sequence successively along Design Orientation position, the work until three axes agitating pile is constructed
Sequence is completed；
Step 2：In subway tunnel and prepare the foundation pit periphery excavated arrangement deformation monitoring device, pass through electrical digital control instrument
Device continues to monitor in subway tunnel and prepares the deformation on the foundation pit periphery excavated；
Step 3：Excavation of foundation pit；
Step 3.1：Tunnel structure in foundation pit is carried out being divided into section for 4 meters by excavation section by section by width；
Step 3.2：According to the division of step 3.1, piecewise carry out earth excavation, supporting and bed course；
Step 3.3：Treat that bed course work is completed in foundation pit, carries out concrete floor pouring construction, wherein, pour the deadline
Control is within 3 days；
Step 3.3：Preloading construction is carried out on concrete floor, wherein, the weight of preloading is prefabricated reinforced concrete block.
The speed that brill is carried in the step 1.2 is less than 0.5m/min.
Earth excavation carries out the excavation of the earthwork using backhoe digging machine and has bad luck in the step 3.2.
The technique that the successively preloading of prefabricated reinforced concrete block is used in the step 3.3.
The weight of prefabricated reinforced concrete block used in the step 3.3 is 5t.
Preloading construction is carried out using gantry crane lifting prefabricated reinforced concrete block in the step 3.3.
The speed that brill is carried in the step 1.2 is 0.35m/min.
It is carried out in subway tunnel using robot measurement and/or hydrostatic level in the step 2 and prepares the base excavated
Cheat the deformation detection on periphery.By detecting in subway tunnel and preparing the deformation on the foundation pit periphery excavated in real time, sending out
During raw emergency case, urgent consolidation measure is taken in time, ensures safety of subway operation.
Present invention is not limited to the embodiments described above, in the case of without departing substantially from the substantive content of the present invention, this field skill
Any deformation, improvement, the replacement that art personnel are contemplated that each fall within protection scope of the present invention.
Claims (8)
1. a kind of urban road under-traverse tunnel and city underground crossed construction technology, which is characterized in that include the following steps：
Step 1：Foundation stabilization；
Step 1.1：In place, the sinking of spudding according to Design Orientation position progress three axes agitating pile；
Step 1.2：When drill bit arrival design height, start stirring whitewashing 1-2min, brill is carried after the completion of whitewashing；
Step 1.3：Sunk, whitewashed and put forward driller's sequence successively along Design Orientation position, until three axes agitating pile working procedure is complete
Into；
Step 2：In subway tunnel and prepare the foundation pit periphery excavated arrangement deformation monitoring device, by electrical numerical control instrument, hold
The deformation on foundation pit periphery excavated in continuous monitoring subway tunnel with preparation；
Step 3：Excavation of foundation pit；
Step 3.1：Tunnel structure in foundation pit is carried out being divided into section for 4 meters by excavation section by section by width；
Step 3.2：According to the division of step 3.1, piecewise carry out earth excavation, supporting and bed course；
Step 3.3：Treat that bed course work is completed in foundation pit, carries out concrete floor pouring construction, wherein, pour deadline control
Within 3 days；
Step 3.3：Preloading construction is carried out on concrete floor, wherein, the weight of preloading is prefabricated reinforced concrete block.
2. urban road under-traverse tunnel according to claim 1 and city underground crossed construction technology, which is characterized in that institute
The speed that brill is carried in step 1.2 is stated less than 0.5m/min.
3. urban road under-traverse tunnel according to claim 1 and city underground crossed construction technology, which is characterized in that institute
Earth excavation in step 3.2 is stated to carry out the excavation of the earthwork using backhoe digging machine and have bad luck.
4. urban road under-traverse tunnel according to claim 1 and city underground crossed construction technology, which is characterized in that institute
State the technique that the successively preloading of prefabricated reinforced concrete block is used in step 3.3.
5. urban road under-traverse tunnel according to claim 1 and city underground crossed construction technology, which is characterized in that institute
The weight of prefabricated reinforced concrete block used in step 3.3 is stated as 5t.
6. urban road under-traverse tunnel according to claim 1 and city underground crossed construction technology, which is characterized in that institute
It states in step 3.3 and preloading construction is carried out using gantry crane lifting prefabricated reinforced concrete block.
7. urban road under-traverse tunnel according to claim 1 and city underground crossed construction technology, which is characterized in that institute
State carried in step 1.2 brill speed be 0.35m/min.
8. urban road under-traverse tunnel according to claim 1 and city underground crossed construction technology, which is characterized in that institute
State the change for carrying out in subway tunnel and preparing the foundation pit periphery excavated in step 2 using robot measurement and/or hydrostatic level
Shape detects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810043994.3A CN108221970A (en) | 2018-01-17 | 2018-01-17 | A kind of urban road under-traverse tunnel and city underground crossed construction technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810043994.3A CN108221970A (en) | 2018-01-17 | 2018-01-17 | A kind of urban road under-traverse tunnel and city underground crossed construction technology |
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| CN108221970A true CN108221970A (en) | 2018-06-29 |
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| CN201810043994.3A Pending CN108221970A (en) | 2018-01-17 | 2018-01-17 | A kind of urban road under-traverse tunnel and city underground crossed construction technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908805A (en) * | 2022-06-07 | 2022-08-16 | 中建七局安装工程有限公司 | Strip drawing construction method for open cut tunnel with subway striding upwards |
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| CN101215838A (en) * | 2007-12-28 | 2008-07-09 | 浙江环宇建设集团有限公司 | Construction technique for foundation ditch on top of underground railway tunnel in soft soil area |
| CN103590425A (en) * | 2013-11-28 | 2014-02-19 | 中铁二十局集团第五工程有限公司 | Peaty soft soil stratum subway station construction technology |
| CN106638643A (en) * | 2016-12-23 | 2017-05-10 | 中国建筑第四工程局有限公司 | Water-stopping-curtain construction device and method |
| CN107245996A (en) * | 2017-02-16 | 2017-10-13 | 昆山市交通工程有限公司 | Soft soil roadbed cement mixing pile constructing process |
| CN206768889U (en) * | 2017-05-27 | 2017-12-19 | 常州市测绘院 | A kind of subway foundation pit automates DEFORMATION MONITORING SYSTEM |
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2018
- 2018-01-17 CN CN201810043994.3A patent/CN108221970A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215838A (en) * | 2007-12-28 | 2008-07-09 | 浙江环宇建设集团有限公司 | Construction technique for foundation ditch on top of underground railway tunnel in soft soil area |
| CN103590425A (en) * | 2013-11-28 | 2014-02-19 | 中铁二十局集团第五工程有限公司 | Peaty soft soil stratum subway station construction technology |
| CN106638643A (en) * | 2016-12-23 | 2017-05-10 | 中国建筑第四工程局有限公司 | Water-stopping-curtain construction device and method |
| CN107245996A (en) * | 2017-02-16 | 2017-10-13 | 昆山市交通工程有限公司 | Soft soil roadbed cement mixing pile constructing process |
| CN206768889U (en) * | 2017-05-27 | 2017-12-19 | 常州市测绘院 | A kind of subway foundation pit automates DEFORMATION MONITORING SYSTEM |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908805A (en) * | 2022-06-07 | 2022-08-16 | 中建七局安装工程有限公司 | Strip drawing construction method for open cut tunnel with subway striding upwards |
| CN114908805B (en) * | 2022-06-07 | 2023-09-15 | 中建七局安装工程有限公司 | Open cut tunnel strip drawing construction method for over-span subway |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 450001 No. 59 Lianhua street, hi tech Development Zone, Henan, Zhengzhou Applicant after: China Power Construction Eleventh Bureau Engineering Co., Ltd. Applicant after: SINOHYDRO Bureau 11 Co., Ltd. Address before: 450001 No. 59 Lianhua street, hi tech Development Zone, Henan, Zhengzhou Applicant before: China Hydropower eleventh Engineering Bureau (Zhengzhou) Co., Ltd. Applicant before: SINOHYDRO Bureau 11 Co., Ltd. |
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Application publication date: 20180629 |