CN105909260B - Subway station water stop structure for protecting groundwater environment and construction method thereof - Google Patents
Subway station water stop structure for protecting groundwater environment and construction method thereof Download PDFInfo
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- CN105909260B CN105909260B CN201610431055.7A CN201610431055A CN105909260B CN 105909260 B CN105909260 B CN 105909260B CN 201610431055 A CN201610431055 A CN 201610431055A CN 105909260 B CN105909260 B CN 105909260B
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- 239000003673 groundwater Substances 0.000 title claims abstract description 31
- 238000007710 freezing Methods 0.000 claims abstract description 141
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Architecture (AREA)
- Soil Sciences (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to the electrified railway technology, in particular to a subway station water stop structure for protecting underground water environment and a construction method thereof. This stagnant water structure includes: the device comprises a V-shaped frozen soil water stop layer, wherein two vertical frozen soil walls are arranged in a space enclosed by the V-shaped frozen soil water stop layer; the vertical frozen soil wall is communicated with the V-shaped frozen soil water stop layer. The V-shaped frozen soil waterproof layer prevents external underground water from entering a station foundation pit; the vertical frozen soil wall is used for supporting the stability of soil bodies on two sides of a station foundation pit, protecting the groundwater environment and avoiding polluting the groundwater quality in the construction process. By adopting the freezing water-stopping structure, large-scale drainage construction is avoided, precious underground water resources are saved, and meanwhile, the sedimentation deformation of surrounding adjacent buildings and structures caused by drainage construction is avoided.
Description
Technical field
The present invention relates to electric railway technologies, in particular to for protecting the subway station of groundwater environment to stop
Water-bound and its construction method.
Background technique
Subway construction for region of FuShui, when subway tunnel uses shallow mining method, using sealing or drainage position
Underground water within the scope of reason tunnel excavation is the element task before tunnel excavation.Currently, China's subway tunnel sealing generally uses
Ejection for water plugging or rotary churning pile water stopping, both sealing modes require to inject cement grout into soil layer, polluted underground water water
Matter, while cement grout flow direction is not easy to control, is easy the seepage channel of blocking underground water, changes the percolation path of underground water.And
Using drainaging scheme, by the valuable groundwater resources of waste, while draining caused level of ground water reduction and easily causing periphery neighbouring
It builds, the sedimentation and deformation of structures.
With urbanization progress and economic development, subway solves one of the main means of urban transport problems by becoming.But
It is that it is all kinds of often to cause surface subsidence, karst collapse, wall rock destabilization etc. during subway construction since geological conditions difference is larger
The problems of geo-environment can also cause all kinds of water environmental problems such as tunnel gushing water, water level decreasing, water pollution.
To avoid all kinds of engineering problems caused in Metro Construction or reducing influence of the subway engineering to surrounding enviroment,
Domestic and foreign scholars have carried out a large amount of research to correlative protection governing measure and method.Albert Weiler (1983) is based on moral
Will Duisburg Quaternary Strata condition sums up subway construction method-gap concretion method.Sun Yazhe (2003) is directed to Nanjing
Traffic tunnel is built there may be the problems of geo-environment such as water pollution, surface subsidence, surface collapse, tunnel gushing waters under the XuanWu Lake,
To reduce the influence to groundwater environment, it is proposed that limitation cutting depth and protection natural sludge layer, using banketing for good water permeability
The small construction material of material, pollution, chemical grout avoid large area artificial rainmaking using freezing sealing construction scheme.It sets a prairie fire side
(2004) it is directed to influence of the karst to Guangzhou Metro Construction, proposes to carry out karst water segregation using freezing and High-Pressure Grouting Method,
To solution cavity using grouting and pattern handling.Xing Wei river bend (2004) analyze Metro Construction may be to the influence of water quality, it is proposed that
Using small construction material and chemical grout is polluted in engineering construction, the change for analyzing groundwater flow condition can also make
Engineering stability be deteriorated cause differential settlement, it is proposed that optimization each construction parameter of shield, and using corresponding engineering method such as every
Disconnected, soil stabilization, structure trunk reinforcing and foundation underpinning etc. are to reduce the influence to ambient enviroment.C.O.Aksoy(2008)
The surface subsidence problem for analyzing the initiation of Turkey's Izmir subway station engineering dewatering maintains country rock by chemical grouting means
Stability effectively prevents surface subsidence and restores level of ground water to previous level.Li Guangtao (2009) is for Guangzhou
Molten, soil cave unfavorable geological condition present in No. three line engineering constructions of iron is handled, and the rock of shield and open cut is clearly proposed
Molten treatment measures.R.Galler (2009) proposes the new Austrian method for tunnel construction (NATM) of a set of economic security, the party
Method was rapidly developed in recent years in Australia.Fu Zhifeng (2010) is for possible in No. 2 line engineering constructions of Wuhan subway
The geotechnical engineering problems such as quaternary formation, Karst Geological Landscape, the underground water of appearance, propose engineering dewatering design, diaphram wall,
Slip casting blocks the precautionary measures such as waterproofing work.Long Yankui (2012) analyzes influence of the karst to subway engineering, emphatically to karst
The influence factor of cave stability is explored, and proposes the karst cave of digging up and filling in, slip casing by pressure, works leap
Treatment measures.It is therefore seen that the previous treatment research focused on to certain the problems of geo-environment, and it is anti-for engineering should be carried out. more
Shield processing takes into account spring water again and the research of water quality protection is also more rare at present.
Summary of the invention
The subway station water sealing structure and its construction that the purpose of the present invention is to provide a kind of for protecting groundwater environment
Method, the problem of to solve in tunnel work progress to Groundwater Pollution, protect groundwater resources.
The embodiment of the invention provides a kind of for protecting the subway station water sealing structure of groundwater environment comprising: V-arrangement
Frozen soil sealing layer, vertical frozen soil wall is blocked up in setting two in the space that the frozen soil sealing layer of the V-arrangement surrounds；The vertical frozen soil wall
It is connected with the frozen soil sealing layer of the V-arrangement；The foundation pit two sides ground of the subway station is laid with insulating layer, the insulating layer packet
It includes: eps foam plate, polystyrene, extruded sheet, any insulation board in polyurethane sheet.
In some embodiments, preferably, the midline position of subway station is crossed in the bottom of the frozen soil sealing layer of the V-arrangement；
And/or the frozen soil sealing layer of the V-arrangement with a thickness of 0.5m~2.0m；And/or the vertical frozen soil wall with a thickness of 0.5m
~3.0m.
In some embodiments, preferably, the inside of the frozen soil sealing layer of the V-arrangement, the vertical frozen soil wall inside
Multiple freezing holes are respectively provided with, freezing pipe is set in the freezing hole.
In some embodiments, preferably, the diameter of the freezing hole is 50mm~200mm, described to freeze pitch of holes 500
~1000mm.
In some embodiments, preferably, the mean temperature of the frozen soil sealing layer of the V-arrangement and the vertical frozen soil wall is not
Higher than -10 DEG C.
In some embodiments, preferably, the inner surface of the foundation pit sprays thermal insulation concrete.
In some embodiments, preferably, the thermal insulation concrete layer includes: the height of air entrained concrete, 0.5%~2%
Imitate accelerator, 0.5%~2% latex powder and 3%~7% fiber.
The construction method for the subway station water sealing structure that the present invention also provides a kind of for protecting groundwater environment, packet
It includes:
Position is built in subway station, by design orientation and angle excursion, adopts and carries out freezing hole and thermometric in a like fashion
The drilling in hole；The wherein tripping in freezing pipe in freezing hole, the tripping in liquid supply pipe in the freezing pipe；
Refrigeration system is freezed in installation, will freeze refrigeration system and is connected respectively with thermometer hole, liquid supply pipe；
Freeze operation is carried out, frozen soil sealing layer, the vertical frozen soil wall of V-arrangement are constructed；
After the thickness and intensity of V-arrangement frozen soil sealing layer and vertical frozen soil wall reach preset requirement, frozen construction enters dimension
After protecting freezing period, excavation of foundation pit is successively carried out；
Tunnel lining structure is constructed after excavation of foundation pit.
In some embodiments, preferably, the drilling of the freezing hole includes:
Determine freezing pipe, relief tube, the specification of liquid supply pipe, equipment of drilling；
Drilling machine platform is built, position is increased in the drilling machine platform setting layering；
Freezing hole aperture, the drilling mounting hole pipe of each freezing hole；
By the fixed drilling machine of freezing hole design orientation, freezing pipe is put into drilling, to seal head after projected depth under freezing pipe
Portion seals the gap of freezing pipe and orifice tube；Freezing pipe and freezing hole concentricity, freezing hole leak test pressure is in 0.7~1.0MPa；
The tripping in liquid supply pipe in freezing pipe, liquid supply pipe bottom end welding support, and outlet and circuit goat's horn are installed, and freeze
Pipe end-cap.
In some embodiments, preferably, described to freeze in refrigeration system, in outlet saline line, circuit saline line
It is respectively mounted pressure gauge, temperature sensor, control valve；And/or Brine Pipe outlet installation flowmeter；And/or brine distributing ring and freeze
Tie two valves that control freezing phase brine flow is installed between device；And/or the eminence of saline line installs vent valve；With/
Or, refrigerant agent uses calcium chloride solution, specific gravity 1.265.
In some embodiments, preferably, polystyrene foam plastics insulating layer, modeling are set gradually outside the saline line
Expect film.
In some embodiments, preferably, the refrigeration system of freezing further includes freezing unit, the steaming of the freezing unit
Hair device and cryogenic pipe are kept the temperature with flex foam, and brine tank and salt water conduit tube are kept the temperature with polystyrol plastic foam plate.
In some embodiments, preferably, the freeze operation includes:
In the case where adjusting pressure, temperature at any time, refrigeration system is freezed in operating；
In freezing process, timing detects brine temp, brine flow and frozen soil sealing layer spread scenarios；
It determines that the frozen soil sealing layer of V-arrangement has formed loop connecting structure, and reaches preset thickness；
Determine inside the frozen soil sealing layer of V-arrangement in non-frozen soil 2 meters or more without freezing water；
Subregion opens the active well borehole wall；
After being excavated in soil layer, determine that thickness, surface temperature and the deformation of horizontal direction frozen soil sealing layer reach preset requirement；
Into maintenance freezing period；In maintenance freezing period, if frozen soil sealing layer expansion rate is more than preset value, frozen soil sealing layer
Bearing capacity, the super pre-value of stability, then brine temp be not higher than -20 DEG C in the case where, improve brine temp.
It is provided in an embodiment of the present invention for protecting the subway station water sealing structure and construction method of groundwater environment, and it is existing
There is technology to compare, the frozen soil sealing layer of V-arrangement, to prevent from being externally lauched into station pit；Vertical frozen soil wall is used to support
The stabilization of station pit soil at both sides.
Detailed description of the invention
Fig. 1 is in one embodiment of the invention for protecting the cross section of the subway station water sealing structure of groundwater environment to show
It is intended to；
Fig. 2 is the schematic diagram for freezing refrigeration system in one embodiment of the invention in water sealing structure.
Note: 1 oblique freezing pipe；The frozen soil sealing layer of 2V shape；3 vertical freezing pipes；4 vertical frozen soil walls；5 ground insulating layers；6
Thermal insulation concrete；7 subway stations；8 fresh water pumps；9 freezing units；10 starting cabinets；11 brine tanks；12 brine pumps；13 freezing pipes；14
Cooling tower.
Specific embodiment
The present invention is described in further detail below by specific embodiment combination attached drawing.
In view of water is Source of life and the precious resources that city is depended on for existence and development, China has more than half
City there are problems that lacking, and therefore, it is engineering technology that valuable groundwater resources how are protected during metro construction
The key technical problem that personnel intend to solve, such as this city well-known with spring in Jinan, protect the water quality and water of spring,
Matter of utmost importance even more in subway construction.The technical issues of present invention intends to solve be in region of FuShui subway tunnel process of construction such as
What protection underground water realizes safely and fast efficiently excavating for subway tunnel in the case where not precipitation.Therefore solution is clearly required
The technical issues of are as follows:
(1) pollution problem of the constructing metro tunnel in the process to quality of groundwater is solved；
(2) protection of the constructing metro tunnel in the process to underground water water resource is solved, avoids reducing groundwater level, avoid
Change seepage action of ground water path, protects spring.
The subway station water sealing structure for protecting groundwater environment is provided thus comprising: the frozen soil sealing of V-arrangement
Layer, vertical frozen soil wall is blocked up in setting two in the space that the frozen soil sealing layer of the V-arrangement surrounds；The vertical frozen soil wall and the V-arrangement
Frozen soil sealing layer be connected；The foundation pit two sides ground of the subway station is laid with insulating layer, and the insulating layer includes: EPS bubble
Foam plate, polystyrene, extruded sheet, any insulation board in polyurethane sheet.
Its construction method includes:
Position is built in subway station, by design orientation and angle excursion, adopts and carries out freezing hole and thermometric in a like fashion
The drilling in hole；The wherein tripping in freezing pipe in freezing hole, the tripping in liquid supply pipe in the freezing pipe；
Refrigeration system is freezed in installation, will freeze refrigeration system and is connected respectively with thermometer hole, liquid supply pipe；
Freeze operation is carried out, frozen soil sealing layer, the vertical frozen soil wall of V-arrangement are constructed；
After the thickness and intensity of V-arrangement frozen soil sealing layer and vertical frozen soil wall reach preset requirement, frozen construction enters dimension
After protecting freezing period, excavation of foundation pit is successively carried out；
Thermal insulation concrete is sprayed after excavation of foundation pit in time.
The frozen soil sealing layer of V-arrangement, to prevent from being externally lauched into station pit；Vertical frozen soil wall is used to support station
The stabilization of foundation pit soil at both sides.
Next, the technology is described in detail:
It is a kind of for protecting the subway station water sealing structure of groundwater environment, as shown in Figure 1, comprising: the frozen soil of V-arrangement stops
Water layer, vertical frozen soil wall is blocked up in setting two in the space that the frozen soil sealing layer 2 of the V-arrangement surrounds；The vertical frozen soil wall and the V
The frozen soil sealing layer 2 of shape is connected.The inside of the frozen soil sealing layer 2 of V-arrangement, the inside of the vertical frozen soil wall are respectively provided with multiple jellies
Hole is tied, freezing pipe is set in the freezing hole.Oblique freezing pipe 1 and vertical freezing pipe 3 be set in 7 two sides of subway station, two
The frozen soil sealing layer 2 an of V-arrangement is collectively formed in the oblique freezing pipe 1 of side, to prevent from being externally lauched into station pit；It is perpendicular
It is used to form a vertical frozen soil wall to freezing pipe 3, supports the stabilization of station pit soil at both sides.
The midline position of subway station 7 is crossed in the bottom of the frozen soil sealing layer 2 of the V-arrangement；The tilt angle of oblique freezing pipe 1
It being determined according to station two sides construction site and station pit cutting depth, the length of freezing pipe need to reach station midline position, with
The linking of other side freezing pipe, forms closed V-arrangement frozen soil layer.
The frozen soil sealing layer 2 of the V-arrangement with a thickness of 0.5m~2.0m.Freeze the quasi- selection 50mm~200mm of bore dia, freezes
Tie 500~1000mm of pitch of holes.
The length of vertical freezing pipe 3 is determined according to station pit cutting depth, and is connected with ipsilateral oblique freezing pipe 1, shape
At a y shape frozen soil layer, be conducive to the stabilization of waterproof and soil at both sides.The thickness of vertical frozen soil sealing layer is according to excavation of foundation pit depth
The parameters such as degree, foundation pit two sides Water And Earth Pressures, ground load determine, need to meet the requirement of soil at both sides stability, thickness is intended to be
1.0m~3.0m range.Freeze the quasi- selection 50mm~200mm of bore dia, freezes 500~1000mm of pitch of holes.The vertical frozen soil
Wall 4 with a thickness of 0.5m~3.0m.
The mean temperature of effective V layer frozen soil sealing layer and vertical frozen soil wall 4 is not higher than -10 DEG C, frozen soil sealing when excavation
Layer surface temperature is lower than -3 DEG C.
In order to reduce energy consumption, the heat insulation effect of refrigeration system is improved, is laid with insulating layer, foundation pit on foundation pit two sides ground
Thermal insulation concrete 6 is sprayed on foundation pit surface in digging process, collectively forms heat-insulation system.Eps foam can be selected in ground insulating layer 5
The heat preservation plate materials such as plate, polystyrene, extruded sheet, polyurethane sheet.The injection thermal insulation concrete 6 of foundation pit two sides and bottom of foundation ditch is with base
It excavates successively injection, jet thickness and is intended to be 10~30cm in hole.Thermal insulation concrete 6 is also known as air entrained concrete, foam concrete, hair
Concrete is steeped, the scope of heat preserving and insulating material is belonged to, can be prevented or reduce with extraneous generation heat exchange, the tool that reduction heat dissipates
There is the special concrete of certain Physical and mechanical properties.
Thermal insulation concrete 6 is constructed using wet shot method, in order to reduce the mobility of foam concrete, improves viscosity and attachment
Power increases by 0.5%~2% efficient accelerator of BASF, 0.5%~2% ternary latex powder and 3% in foam concrete
~7% fiber.
The construction method of above-mentioned bored tunnel water sealing structure is provided below, specifically includes:
Step 101, freezing pipe creeps into preparation；
First part: freezing pipe, temperature tube, relief tube and liquid supply pipe specification
108 × 8mm of ф low-carbon seamless steel pipe can be selected in freezing pipe, and single pipe length is 1.5~2m, using threaded connection
And manual repair welding, temperature tube and the same freezing pipe of hydrology pipe tubing.62 × 6mm of liquid supply pipe ф can be selected enhancing vinyl tube or
15# steel pipe.
Second part: lectotype selection of drilling
2, MKG-5S type drilling machine can be selected.2, BW-250/50 slush pump, flow 250l/min can be selected.Drilling machine and
Slush pump general power is 41kw.
Freezing hole drilling special combination drilling tool pipe-following drilling can be used.Special TY-1 type high-precision can be used in drillhole inclination survey
Horizontal drilling gyrolevel, drilling superficial part are calibrated with theodolite Inclination Measurement by Light.
Part III: freezing hole quality requirement
According to construction reference point, freezing hole is arranged by freezing hole construction figure.Hole location deviation should not exceed 100mm.Freezing hole
110mm can be selected in aperture.Freezing hole drilling depth error is -0.2~+0.3m.Hole deviation controls within 0.8 ‰.
Part IV: drilling machine platform is built
Drilling machine platform is built using full hall scaffold pipe, and scaffold tube interplanar spacing is 0.6m × 0.6m.Platform is completely spread
60mm thickness deal board, borer chassis underlay 200mm × 200mm lumps of wood.According to hole site is freezed, drilling machine platform is increased in layering.
Step 102: pressing design orientation and angle excursion, adopt the drilling for carrying out freezing hole and thermometer hole in a like fashion；
The wherein tripping in freezing pipe in freezing hole, the tripping in liquid supply pipe in freezing pipe；
The step specifically includes:
Step 102-1, freezing hole aperture
Freezing hole can use the core drill aperture of Φ 160mm diamond.Each drilling mounting hole pipe, orifice tube can use ф 159
The processing of × 8mm seamless steel pipe.When drilling, orifice tube mounting hole sealing device.
Step 102-2, freezing hole drilling are installed with frigo
1. by the fixed drilling machine of freezing hole design orientation requirement.Freezing pipe is put into drilling.To after projected depth under freezing pipe
Seal header joints.
2. in order to guarantee borehole accuracy, aperture section drilling is crucial.When creeping into preceding 10~20m, drilling rod side is checked repeatedly
To, adjustment drilling machine position, and can continue to creep into after detecting deflection no problem with theodolite or gyroscope.
3. to be first piped before in freezing pipe tripping in hole, guarantee freezing pipe concentricity.Under after good freezing pipe, carried out with inclinometer
Deviational survey, then repetition measurement freezes hole depth.Tube head is freezed in sealing after freezing length of tube and deflection qualification, and carries out suppressing leak test.
Freezing hole leak test pressure controls between 0.7~1.0MPa, and stablizing 30 minutes unchanged persons of pressure is that pressure testing is qualified.
4. freezing pipe is after the installation is completed, with the gap of plugging material sealing freezing pipe and orifice tube.
5. the tripping in liquid supply pipe in freezing pipe.The effective pipe collar connection of feed flow, the bracket of 0.2m high is welded in liquid supply pipe bottom end.So
Installation goes, circuit goat's horn and freezes pipe end-cap afterwards.
Thermometric hole construction method is identical as freezing pipe.
Step 103, installation freeze refrigeration system, will freeze refrigeration system respectively with freezing pipe 13, thermometer hole, liquid supply pipe phase
Even；
The installation diagram for freezing refrigeration system can refer to attached drawing 2.Installation steps specifically include:
Step 103-1 freezes refrigeration equipment type selecting and circuit design
1. YSKF600 type, which can be selected, freezes 1 set of unit, YSKF300 type each 2 sets of unit of freezing (wherein 1 set spare).Work as salt
Coolant-temperature gage is at -30 DEG C, and when cooling water temperature is 28 DEG C, the refrigerating capacity of Freezing Station is about 240000kcal/h, freezes 9 motor of unit
General power is 305kw.
2. 8Sh-13 (A) salt water circulating pump 2 (wherein 1 spare), flow 270m can be selected3/ h, lift 36m, motor
Power 45kw；IS200-150-250 cooling water circulating pump 1 is selected, flow 400m3/ h, lift 20m, motor general power 37kw.
3. DBN3-200 type cooling tower 14,2, motor general power 11kw can be selected.
4. brine tank 11 is set, one, volume 6m3。
5. salt water conduit tube sum aggregate liquid distribution pipe selects ф 219 × 8mm seamless steel pipe, salt water conduit tube length is 380m.Collect, match
Liquid pipe is connect with goat's horn selects 1.5 " high-pressure rubber pipes.
6. " welded tube installs thermometer in refrigerator inlet and outlet pipes to cooling water pipe with 5.
7. going, installing pressure gauge, temperature sensor and control valve in the saline line of circuit.It exports and installs in Brine Pipe
Flowmeter.
8. installing two, valve, between brine distributing ring and frigo so as to control freezing device brine flow.
9. the eminence in saline line installs vent valve.
10. salt water and clear water pipeline pressure resistance are respectively 0.7MPa and 0.3MPa.
(11) the cooling water amount of each Freezing Station is 30m3/ h, maximum total electricity consumption about 398kw.
(12) other: refrigerator oil selects N40 refrigerator oil.Refrigerant selects R22 refrigerant.Refrigerant agent is molten using calcium chloride
Liquid is as refrigerating cycle salt water.Salt water specific gravity is 1.265.
Step 103-2, the installation of Freezing Station Housing, Furniture, Furnishing And Equipment
Station equipment mainly includes power distribution cabinet (i.e. starting cabinet 10), freezing unit 9, brine tank 11, brine pump 12, fresh water pump
8, cooling tower 14 and clear water reserviors etc..Equipment is installed to be carried out by the requirement of equipment operating manual.
Control valve is installed between water pump inlet and outlet, salt water conduit tube both ends, collection brine distributing ring and frigo.Condenser into
Outlet installation temperature measuring point；Going to circuit salt water conduit tube both ends that temperature and pressure measuring point is installed；The salt water conduit tube outlet installation in circuit
Electromagnetic flowmeter；Flow measurement circuit is installed between each frigo and collection brine distributing ring；In brine tank installation liquid level instruction report
Alert device.
In some embodiments, Freezing Station assembled prefabricated house, 3.5 meters of clear height, wall and roof are laid with soundproof plate, clear water reserviors
With brick masonry, cement plaster, pond is 0.7 meter high.
Step 103-3, piping connection, heat preservation and test instrumentation are installed
Salt water and cooling water pipeline with pipe support directly on the ground, flanged joint.It goes, circuit salt water conduit tube pipe support is consolidated
It is scheduled on the active well borehole wall.Thermometer, pressure gauge and flowmeter installation are carried out by design.Saline line is used after leak test, cleaning
Polystyrene foam plastics heat preservation, the outside of insulation layer thickness 50mm, insulating layer are wrapped up with plastic film.
Freeze the evaporator of unit and the flex foam heat preservation of cryogenic pipe 50mm thickness, brine tank and salt water conduit tube
It is kept the temperature with the polystyrol plastic foam plate of 50mm thickness.
Step 103-4, dissolves calcium chloride and unit fills fluorine oiling
About 1/4 clear water is first injected in brine tank, then turn on pump recycles and be gradually added solid calcium chloride, until salt water
Concentration reaches design requirement.Impurity is removed when dissolving calcium chloride.Salt water in brine tank cannot fill too full, in order to avoid it is higher than salt
Brine tank is overflowed when the freezing pipe salt water reflux of tank port.
Unit fills fluorine and refrigerator refuels and carries out according to the requirement of equipment operating manual.The inspection of refrigeration system is carried out first
Leakage and nitrogen rinse, and after ensuring system ne-leakage, then fill fluorine oiling.
Step 104, freeze operation is carried out, V-arrangement frozen soil sealing layer, vertical frozen soil wall are constructed；
The step includes:
Step 104-1, freezing system test running with actively freeze
Equipment carries out debugging and test running after the installation is completed.In test running, each state such as pressure, temperature is adjusted at any time
Parameter runs unit under the conditions of in relation to the technical parameter of technological procedure and design requirement.In freezing process, timing is detected
Brine temp, brine flow and frozen soil sealing layer spread scenarios adjust freezing system operating parameter when necessary.Freezing system operating
Enter after normal and actively freezes.It is required that brine temp is down to -20 DEG C or less in one week.
Step 104-2, examination is dug to be freezed with maintenance
It is observed according to hydrology hole and determines that frozen soil sealing layer has handed over circle, and judge that frozen soil sealing layer reaches according to observed temperature
After design thickness, then with core drill 2m or more in non-frozen soil is squeezed into inside frozen soil sealing layer, without moving water in confirmation frozen soil sealing layer.
It is then possible to which subregion opens the active well borehole wall.After being excavated in soil layer, thickness, surface temperature and the change of frozen soil sealing layer are surveyed
Shape such as has reached design requirement, then can enter normal construction, otherwise should stop tunneling, reinforce freezing, and analyze reason, take
Corresponding measure.
Enter maintenance freezing period after excavation of foundation pit.In principle, brine temp and brine flow are freezed in the maintenance during excavation
With actively freeze identical, as according to site-test analysis, proved really in construction, frozen soil sealing layer expansion rate is faster than estimated, freezes
Native sealing layer has enough bearing capacities and stability, has met design requirement, can properly increase brine temp, but highest cannot
Higher than -20 DEG C.Start after doing liner, in the case where ensuring outer lining safety, brine temp can be improved, or even stops freezing in advance
Knot.
Step 105, after the thickness and intensity of V-arrangement frozen soil sealing layer and vertical frozen soil wall reach preset requirement, freeze to apply
After work enters maintenance freezing period, excavation of foundation pit is successively carried out；
When frozen soil layer effective thickness and intensity reach requirement, frozen construction enters layer-by-layer excavation pit after maintenance freezing period,
When excavation, the soil layer for selecting hand excavation not freeze first recycles pneumatic pick to tunnel frozen soil.Note: freezing curtain exposure temperature
Must not spend and be higher than -5 DEG C, and exposure duration control is in for 24 hours.
Step 106, tunnel lining structure is constructed.
The step specifically includes:
Step 106-1 sprays thermal insulation concrete
One layer of heat preservation concrete is sprayed after excavation of foundation pit in time, jet thickness is intended to be 10~30cm.Thermal insulation concrete uses
The construction of wet shot method improves viscosity and adhesive force, increases in foam concrete to reduce the mobility of foam concrete
The efficient accelerator of 0.5%~2% BASF, 0.5%~2% ternary latex powder and 3%~7% fiber.
When excavation of foundation pit is to projected depth, one layer of heat preservation concrete is sprayed in bottom of foundation ditch, thickness is intended to be 10~30cm.
Step 106-2, pours tunnel lining structure
Tunnel-liner should ensure that lining thickness and lapped length of steel bar.Strict control measurement prevents tunnel to owe to dig, and reinforcing bar is tied up
When bundle, special messenger is responsible for, and circumferential, the longitudinal reinforcement lap of splice is respectively 35~25 times of bar diameter.
To guarantee that strength of lining is not less than the requirement of C30, concrete mix proportion experiment should be made before construction, determined by test
Optimum mix, and be strictly controlled, make up to design requirement.
Lining cutting is using homemade simple steel formwork trolley construction, and strict control die shape size cannot invade lining when formwork erection
Inner outline is built, and is no more than 50mm outward, is responsible for by footman survey crew, and blocked up bulkhead, to guarantee outside form joint
Not spillage liquid.
To accelerate concrete hardening and preventing part freezing, the J851 that cement weight 2.5%~4% is added in concrete is early
The MRT early strength antifreezing agent of strong antifreeze water-reducing agent and cement weight 3%~4%, both materials have improvement concrete and easy
Property and density, enhance the anti-permeability performance and freexing tolerance of concrete, and reinforce concrete vibrating in construction, prevent honeycomb fiber crops
Face.
Tunnel-liner should reinforce the continuity of concrete construction, reinforce to concrete curing, to prevent frozen soil to concrete
There is freeze injury.
The invention has the following advantages that
(1) groundwater environment is protected, polluted underground water water quality during constructing tunnel is avoided.
(2) by using water sealing structure is freezed, a wide range of drainage construction is avoided, has saved valuable groundwater resources,
Avoid simultaneously periphery caused by drainage construction it is neighbouring build, the sedimentation and deformation of structures.
(3) by the way that thermal insulation concrete is arranged between Tunnel Second Lining and frozen soil sealing layer, frozen soil sealing layer is improved
Thermal insulation property, slow down frozen soil sealing layer with the heat transfer in tunnel, considerably reduce and freeze expense.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of for protecting the subway station water sealing structure of groundwater environment characterized by comprising prevent external underground water
Into the frozen soil sealing layer of the V-arrangement in station pit, setting support station base in the space that the frozen soil sealing layer of the V-arrangement surrounds
The two of hole soil at both sides block up vertical frozen soil wall；The vertical frozen soil wall is connected with the frozen soil sealing layer of the V-arrangement；The subway
The foundation pit two sides ground at station is laid with insulating layer, and the insulating layer includes: eps foam plate, polystyrene, extruded sheet, polyurethane
Any insulation board in plate；
The inside of the frozen soil sealing layer of the V-arrangement, the inside of the vertical frozen soil wall are respectively provided with multiple freezing holes, the freezing hole
Interior setting freezing pipe；
The drilling of the freezing hole includes:
Determine freezing pipe, relief tube, the specification of liquid supply pipe, equipment of drilling；
Drilling machine platform is built, position is increased in the drilling machine platform setting layering；
Freezing hole aperture, the drilling mounting hole pipe of each freezing hole；
By the fixed drilling machine of freezing hole design orientation, freezing pipe is put into drilling, it is close to seal header joints after projected depth under freezing pipe
Seal the gap of freezing pipe and orifice tube；Freezing pipe and freezing hole concentricity, freezing hole leak test pressure is in 0.7~1.0MPa；
The tripping in liquid supply pipe in freezing pipe, liquid supply pipe bottom end welding support, and outlet and circuit goat's horn are installed, and freeze pipe end
Lid.
2. as described in claim 1 for protecting the subway station water sealing structure of groundwater environment, which is characterized in that the V
The midline position of subway station is crossed in the bottom of the frozen soil sealing layer of shape；And/or the frozen soil sealing layer of the V-arrangement with a thickness of
0.5m~2.0m；And/or the vertical frozen soil wall with a thickness of 0.5m~3.0m.
3. as described in claim 1 for protecting the subway station water sealing structure of groundwater environment, which is characterized in that the jelly
The diameter for tying hole is 50mm~200mm, described to freeze 500~1000mm of pitch of holes.
4. as described in claim 1 for protecting the subway station water sealing structure of groundwater environment, which is characterized in that the V
The mean temperature of the frozen soil sealing layer of shape and the vertical frozen soil wall is not higher than -10 DEG C.
5. according to any one of claims 1-4 for protecting the subway station water sealing structure of groundwater environment, feature exists
In the inner surface of the foundation pit sprays thermal insulation concrete.
6. as claimed in claim 5 for protecting the subway station water sealing structure of groundwater environment, which is characterized in that the guarantor
Warm concrete layer includes: air entrained concrete, 0.5%~2% efficient accelerator, 0.5%~2% latex powder and 3%~7%
Fiber.
7. a kind of construction method of the subway station water sealing structure for protecting groundwater environment characterized by comprising
Position is built in subway station, by design orientation and angle excursion, adopts progress freezing hole and thermometer hole in a like fashion
Drilling；The wherein tripping in freezing pipe in freezing hole, the tripping in liquid supply pipe in the freezing pipe；
Refrigeration system is freezed in installation, will freeze refrigeration system and is connected respectively with thermometer hole, liquid supply pipe；
Freeze operation is carried out, frozen soil sealing layer, the vertical frozen soil wall of V-arrangement are constructed；
After the thickness and intensity of V-arrangement frozen soil sealing layer and vertical frozen soil wall reach preset requirement, frozen construction enters maintenance and freezes
After the knot phase, excavation of foundation pit is successively carried out；
Tunnel lining structure is constructed after excavation of foundation pit；
The drilling of the freezing hole includes:
Determine freezing pipe, relief tube, the specification of liquid supply pipe, equipment of drilling；
Drilling machine platform is built, position is increased in the drilling machine platform setting layering；
Freezing hole aperture, the drilling mounting hole pipe of each freezing hole；
By the fixed drilling machine of freezing hole design orientation, freezing pipe is put into drilling, it is close to seal header joints after projected depth under freezing pipe
Seal the gap of freezing pipe and orifice tube；Freezing pipe and freezing hole concentricity, freezing hole leak test pressure is in 0.7~1.0MPa；
The tripping in liquid supply pipe in freezing pipe, liquid supply pipe bottom end welding support, and outlet and circuit goat's horn are installed, and freeze pipe end
Lid.
8. construction method as claimed in claim 7, which is characterized in that described to freeze in refrigeration system, outlet saline line is returned
Pressure gauge, temperature sensor, control valve are respectively mounted in the saline line of road；And/or Brine Pipe outlet installation flowmeter；With/
Or, installing two valves of control freezing phase brine flow between brine distributing ring and frigo；And/or the eminence peace of saline line
Put air valve；And/or refrigerant agent uses calcium chloride solution, specific gravity 1.265.
9. construction method as claimed in claim 8, which is characterized in that set gradually polystyrene foam outside the saline line
Plastic, thermal-insulation layer, plastic film.
10. construction method as claimed in claim 8, which is characterized in that the refrigeration system of freezing further includes freezing unit, institute
The evaporator and cryogenic pipe for stating freezing unit are kept the temperature with flex foam, brine tank and salt water conduit tube polystyrene foam
Plastic plate heat preservation.
11. such as the described in any item construction methods of claim 7-10, which is characterized in that the freeze operation includes:
In the case where adjusting pressure, temperature at any time, refrigeration system is freezed in operating；
In freezing process, timing detects brine temp, brine flow and frozen soil sealing layer spread scenarios；
It determines that the frozen soil sealing layer of V-arrangement has formed loop connecting structure, and reaches preset thickness；
It is squeezed into inside frozen soil sealing layer 2 meters or more in non-frozen soil with core drill, without dynamic water in confirmation frozen soil sealing layer；
Subregion opens the active well borehole wall；
After being excavated in soil layer, determine that thickness, surface temperature and the deformation of horizontal direction frozen soil sealing layer reach preset requirement；
Into maintenance freezing period；In maintenance freezing period, if frozen soil sealing layer expansion rate is more than preset value, frozen soil sealing layer is held
Power, the super pre-value of stability are carried, then in the case where brine temp is not higher than -20 DEG C, improves brine temp.
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| CN106401618A (en) * | 2016-09-30 | 2017-02-15 | 北京城建集团有限责任公司 | Basin-shaped freezing water-stop system for water-enriched sandy gravel stratum deep-buried metro station |
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| CN109026055B (en) * | 2018-08-08 | 2023-12-22 | 北京建工土木工程有限公司 | Freezing wall enclosure structure in portal ring beam construction and construction method thereof |
| CN109024683A (en) * | 2018-09-04 | 2018-12-18 | 中国电建集团铁路建设有限公司 | A kind of extremely frigid zones subway station insulation construction |
| CN109162298B (en) * | 2018-10-30 | 2020-07-31 | 桂林理工大学 | Construction method of comprehensive pipe rack in water-rich area |
| CN109505295A (en) * | 2018-11-19 | 2019-03-22 | 上海市基础工程集团有限公司 | Diaphram wall joint seal freezes construction technology |
| CN113294205B (en) * | 2021-03-31 | 2023-01-31 | 济南轨道交通集团有限公司 | Underground water flow guide structure of subway station and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3183675A (en) * | 1961-11-02 | 1965-05-18 | Conch Int Methane Ltd | Method of freezing an earth formation |
| CN101487261A (en) * | 2009-01-21 | 2009-07-22 | 浙江中成建工集团有限公司 | Profiled bar freezing wall foundation ditch combined enclosure method and its structure |
| KR101121538B1 (en) * | 2011-09-30 | 2012-03-06 | 박길석 | Diaphragm wall tunnel method - dtm, and tunnel structure using diaphragm wall |
| CN102839670A (en) * | 2011-06-22 | 2012-12-26 | 上海市政工程设计研究总院（集团）有限公司 | Shallow foundation pit freezing enclosure and construction method thereof |
| CN105297742A (en) * | 2015-10-22 | 2016-02-03 | 北京城建集团有限责任公司 | Structure and method of water stopping support of underground space |
-
2016
- 2016-06-16 CN CN201610431055.7A patent/CN105909260B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3183675A (en) * | 1961-11-02 | 1965-05-18 | Conch Int Methane Ltd | Method of freezing an earth formation |
| CN101487261A (en) * | 2009-01-21 | 2009-07-22 | 浙江中成建工集团有限公司 | Profiled bar freezing wall foundation ditch combined enclosure method and its structure |
| CN102839670A (en) * | 2011-06-22 | 2012-12-26 | 上海市政工程设计研究总院（集团）有限公司 | Shallow foundation pit freezing enclosure and construction method thereof |
| KR101121538B1 (en) * | 2011-09-30 | 2012-03-06 | 박길석 | Diaphragm wall tunnel method - dtm, and tunnel structure using diaphragm wall |
| CN105297742A (en) * | 2015-10-22 | 2016-02-03 | 北京城建集团有限责任公司 | Structure and method of water stopping support of underground space |
Non-Patent Citations (1)
| Title |
|---|
| 深圳地铁冻结法止水帷幕施工技术;刘钢立;《内江科技》;20070725(第7期);第105-106页 * |
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