CN107034874B - Double-screw type slip casting type freezing plant and construction method - Google Patents
Double-screw type slip casting type freezing plant and construction method Download PDFInfo
- Publication number
- CN107034874B CN107034874B CN201710129361.XA CN201710129361A CN107034874B CN 107034874 B CN107034874 B CN 107034874B CN 201710129361 A CN201710129361 A CN 201710129361A CN 107034874 B CN107034874 B CN 107034874B
- Authority
- CN
- China
- Prior art keywords
- slip casting
- pipe
- freezing
- helical
- salt water
- 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.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/11—Improving or preserving soil or rock, e.g. preserving permafrost soil by thermal, electrical or electro-chemical means
- E02D3/115—Improving or preserving soil or rock, e.g. preserving permafrost soil by thermal, electrical or electro-chemical means by freezing
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Abstract
The present invention provides a kind of double-screw type slip casting type freezing plant and construction method, including double-screw type slip casting type freezing pipe, the double-screw type slip casting type freezing pipe includes salt water liquid supply pipe and covers the outer tube outside the salt water liquid supply pipe, two helical ducts are provided between the tube wall of the salt water liquid supply pipe and the tube wall of the outer tube, two helical ducts share tube wall with the salt water liquid supply pipe and the outer tube, wherein a helical duct is salt water helical pipe, another helical duct is slip casting helical pipe.Double-screw type slip casting type freezing plant provided by the invention and construction method, it realizes the combination of grouting for water blocking, strengthening stratum technology and manual pipe jacking special construction technique, and the subterranean pipe line of two kinds of construction technologies is arranged in the same pipeline, it not only simplifies construction method and has saved drilling and pipeline cost again.
Description
Technical field
The present invention relates to artificial stratum freezing engineering field, especially a kind of double-screw type slip casting type freezing plant and construction
Method.
Background technique
Freeze-wellboring is beaten around the underground space to be excavated first a certain number of before underground engineering construction
Freezing hole installs frigo in hole, and hypothermic saline flows in frigo, the heat of its surrounding formation is absorbed, loose, aqueous
Formed in caving ground and freeze cylinder, freeze cylinder be gradually expanded and connect into it is closed, meet design thickness and intensity
Cylinder-dog collar completely cuts off underground water to resist soil, water pressure, is a kind of by artificial system to pass through aquifer water-bearing stratum safely
The special construction method of the cold temporary strengthening stratum of means and partition underground water.
Early in earlier 1800s, Russian begins to dig vertical gold mining using weather freezing layer in Siberia.1862
Year, Britain was first with artificial freezing technology reinforcing foundation pit.German engineer Bo Cishu in 1883 is used in Alba Reed coal mine
Freezing process digs the pit shaft of depth 103m, and obtains the patent of freeze-wellboring.From this, this technology is widely used in many states
In the engineering construction of family.The U.S. often carries out the reinforcing on basis using freezing process；The former Soviet Union once repeatedly made in subway tunnel construction
Use freezing technology as stratum consolidation measure；Freezing process is applied in bridges and culverts and the strengthening construction of Tunnel Engineering by the Western European countries；
Osaka, Japan Department of Communications freezes soil body volume up to 70m in No. five line engineering constructions of city's subway, using freezing process3, to ensure
Shield is smoothly appeared.China to nineteen fifty-five with the help of Polish expert using freezing process establish out Luan First Weighting On Linxi Coal Mine ventilating shaft with
Come, freeze-wellboring is widely promoted and applied in China.
While engineering with artificial freezing method strengthening stratum is widely used in caving ground pit shaft construction project, in other geotechnical engineerings
It is promoted rapidly in the especially city underground engineering of field.At abroad, construction freezing method technology have become it is a kind of feasible and
The effective ways of water are reinforced, blocked to the weak soil of great competitiveness, unstable aquifer water-bearing stratum.Germany is in the river bed Eisbach within 1991
In the cave-in accident occurred when three Parallel Tunnel constructions, liquid nitrogen freezing method is used to carry out soil layer reinforcing to position is collapsed,
Receive good effect；Frozen soil is carried out in subway expansion works near the railway station of the German downtown Dusseldorf within 1994
Laboratory test finds that its intensity and anti-deformation can just be met the requirements when the saturation degree of soil reaches 60% or more.And now
With the development of China's geotechnical engineering, deep foundation and other underground municipal works are continued to bring out, and freezing process building enclosure is with it
Unique superiority and be increasingly taken seriously, ground freezing technique comprehensively enter China's city underground engineering field.
In artificial Freezing stratum as rapid, if required frozen ground, with the flowing of underground water, understands band there are when Groundwater Flow
Walk the cooling capacity of a large amount of freezing pipes, thus cause above water flow freezing pipe be formed by freeze cylinder be difficult and water flow below freezing pipe
It is formed by and freezes cylinder friendship circle, the period of entire frost wall greatly lengthens.Simultaneously because the flowing of underground water causes to freeze
Wall is formed there are position difference, and water flow lower section is first freezed, and water flow is freezed behind top, and frost wall partly belongs to relatively thin above water flow
Weak position influences the stress of frost wall during freeze-wellboring.Often through increasing freezing pipe caliber, increasing in engineering
Freeze hypothermic saline usage amount and reduce the method for hypothermic saline temperature to handle relevant issues, significantly increases energy consumption.For
The call of response modern society's energy-saving and emission-reduction provides a kind of novel freezing pipe that freezes the stratum containing Groundwater Flow and construction work
Skill is particularly important.
Summary of the invention
The purpose of the present invention is to provide a kind of double-screw type slip casting type freezing plant and construction methods, can overcome existing
The water flow flowing when freezing stratum containing Groundwater Flow of freezing pipe and construction freezing method technique causes a large amount of loss of refrigeration capacity, freezes
Wall extremely difficult friendship circle, duration of freezing is longer, not can guarantee frost wall uniformly freezes, after freeze thawing outer shaft wall by water pressure is excessive and nothing
The problems such as method combines slip casting with frozen construction.
To achieve the goals above, the invention provides the following technical scheme:
A kind of double-screw type slip casting type freezing plant, including double-screw type slip casting type freezing pipe, the double-screw type slip casting
Type freezing pipe includes salt water liquid supply pipe and covering the outer tube outside the salt water liquid supply pipe, the salt water liquid supply pipe tube wall and
Be provided with two helical ducts between the tube wall of the outer tube, two helical ducts with the salt water liquid supply pipe and described
Outer tube shares tube wall, wherein a helical duct is salt water helical pipe, another helical duct is slip casting spiral
Pipeline；Driveed at the upper end tube wall of the outer tube there are two hole, two holes respectively as salt water outlet end and slurries feed flow end,
Multiple slurries slurry outlets are provided on the outer tube；Slurries feed flow end is connected with one end of connecting tube, sets in the connecting tube
It is equipped with into slurry ball valve, the other end of the connecting tube is connected with an end of tee tube, described into slurry ball valve and described three
Grouting pressure table is provided in connecting tube between siphunculus, second end of the tee tube is equipped with venting ball valve, described
The third end of tee tube is connected with grouting pump, and pressure gauge, the grouting pump and air compressor machine phase are equipped on the grouting pump
Even.
Further, in above-mentioned double-screw type slip casting type freezing plant, the upper end of the slip casting helical pipe is equipped with
The lower end of upper end helical baffle, the slip casting helical pipe is equipped with lower end helical baffle.
Further, the salt water liquid supply pipe, the outer tube, described in above-mentioned double-screw type slip casting type freezing plant
Freeze salt water helical pipe and the slip casting helical pipe is all made of low temperature mild steel and is made；
Preferably, slurries feed flow end and the connecting tube are welded to connect.
Further, in above-mentioned double-screw type slip casting type freezing plant, multiple slurries slurry outlets are in the outer tube
On be spirally distributed and corresponding with the position of the slip casting helical pipe.
Further, in above-mentioned double-screw type slip casting type freezing plant, multiple grouting pressures are installed on the outer tube
Sensor；Preferably, multiple grouting pressure sensors be spirally distributed on the outer tube and with the slip casting spiral
The position of pipeline is corresponding, the grouting pressure sensor and the intermittent distribution of slurries slurry outlet.
Further, in above-mentioned double-screw type slip casting type freezing plant, multiple solidification points are installed on the outer tube
Sensor, multiple solidification point sensors are spirally distributed on the outer tube and the position with the salt water helical pipe
Set correspondence.
On the other hand, a kind of construction method of double-screw type slip casting type freezing plant is provided, is included the following steps:
(1) vertical freezing hole is bored in the soil body, and double-screw type slip casting type freezing pipe is installed in the freezing hole；
(2) grouting equipment is used, injecting paste material is injected by slip casting helical pipe, the soil body is carried out to freeze preceding pre-pouring grout；
(3) freezing system is used, refrigerant is injected by salt water helical duct, the soil body is freezed.
Further, in the above-mentioned methods, the method also includes being examined in step (1) using theodolite Inclination Measurement by Light method
The verticality of double-screw type slip casting type freezing pipe is surveyed, then the depth of repetition measurement freezing hole, and carries out salt water helical duct and suppress examination
The step of leakage；
Preferably, in step (2), after grouting equipment and corollary equipment are all connected, slip casting helical pipe is checked
It is whether normal, check it is errorless after grouting pump connected into slurries and pneumatic air compressor machine, open venting ball valve, close into slurry ball valve, to
When having slurries outflow in venting ball valve, slurries situation is observed, closes venting ball valve, opens into slurry ball valve, utilizes slip casting helix tube
Road carries out the soil body to freeze preceding pre-pouring grout；
Preferably, it the method also includes installing to freeze station equipment between step (2) and step (3), debugged, tried
Operating, and secondary the step of suppressing leak test, is carried out to salt water helical duct.
On the other hand, the construction method of another double-screw type slip casting type freezing plant is provided, is included the following steps:
(1) vertical freezing hole is bored in the soil body, and double-screw type slip casting type freezing pipe is installed in the freezing hole；
(2) freezing system is used, refrigerant is injected by salt water helical duct, the soil body is freezed；
(3) grouting equipment is used, injecting paste material is injected by slip casting helical pipe, the soil body is carried out to freeze grouting behind shaft or drift lining.
Further, in the above-mentioned methods, the method also includes being examined in step (1) using theodolite Inclination Measurement by Light method
The verticality of double-screw type slip casting type freezing pipe is surveyed, then the depth of repetition measurement freezing hole, and carries out salt water helical duct and suppress examination
The step of leakage；
Preferably, it the method also includes installing to freeze station equipment between step (1) and step (2), debugged, tried
The step of operating；
Preferably, in step (3), after grouting equipment and corollary equipment are all connected, slip casting helical pipe is checked
It is whether normal, check it is errorless after grouting pump connected into slurries and pneumatic air compressor machine, open venting ball valve, close into slurry ball valve, to
When having slurries outflow in venting ball valve, slurries situation is observed, closes venting ball valve, opens into slurry ball valve, utilizes slip casting helix tube
Road carries out the soil body to freeze grouting behind shaft or drift lining.
Analysis is it is found that double-screw type slip casting type freezing plant disclosed by the invention and construction method, realize following technology
Effect:
(1) double-screw type slip casting type freezing pipe is formed by salt water liquid supply pipe is nested with outer tube, salt water liquid supply pipe and outer tube it
Between be equipped with two helical channels, respectively as the channel for freezing brine recycling and stratum slip casting.It realizes grouting for water blocking, add
Gu the combination of stratum technology and manual pipe jacking special construction technique, and the subterranean pipe line of two kinds of construction technologies is arranged same
In pipeline, not only simplifies construction method and saved drilling and pipeline cost again.
(2) it is mounted on pressure gauge on the tee tube and grouting pump at slurries feed flow end, by infusing during observation slip casting
Starch pressure variation, can reasonably control the progress of slip casting, can be excessive to avoid grouting pressure and damage double-screw type slip casting by pressure
Type freezing pipe, and can be avoided due to the problem that pressure of freezing wall is insufficient and causes slip casting insufficient.
(3) one kind is chosen in the two different construction methods that can be provided in the present invention by geological prospecting, according to
Actual conditions selection freezes preceding pre-pouring grout or freezes the flowing that grouting behind shaft or drift lining is capable of effective control freezing water flooding, and examines in real time
The pressure of slip casting and the temperature of freezing process are surveyed, is conducive to rationally control slip casting and freezing process, it is ensured that frost wall
It is formed and the safety in digging process.By geological prospecting, the available flow condition for freezing aquifer water-bearing stratum, if underground water
Flow velocity is less than 5m/d, it is only necessary to be freezed, it is not necessary to stratum grouting and reinforcing is carried out after freezing；If groundwater velocity be 5m/d~
20m/d can freeze the methods of the temperature of liquid, the caliber for increasing freezing pipe by increase freezing pipe quantity, reduction and be freezed, be frozen
It needs to carry out stratum grouting and reinforcing after knot；If groundwater velocity is greater than 20m/d, need first to carry out after the grouting and reinforcing of stratum again into
Row freezes.Above-mentioned groundwater velocity is only term of reference, and when construction should carry out appropriate adjustment in conjunction with Practical Project geological state.
(4) if groundwater velocity is greater than 20m/d, need first to carry out to be freezed again after the grouting and reinforcing of stratum to choose the
A kind of construction method carries out pre-pouring grout water blockoff to stratum containing Groundwater Flow by pre-pouring grout before freezing, reduces due to water flow
Flowing and caused by loss of refrigeration capacity so that the friendship circle of freezing pipe is more easier shorten duration of freezing, and ensure that frost wall
Uniformly freeze, it is ensured that frost wall is formed and the safety in digging process.
It (5), can be by increasing freezing pipe quantity, reducing the temperature for freezing liquid, increasing if groundwater velocity is 5m/d~20m/d
The methods of the caliber of big freezing pipe is freezed, and needs to carry out stratum grouting and reinforcing after freezing.Second of construction method is chosen,
Water blockoff is carried out to stratum containing Groundwater Flow by frost wall freeze thawing grouting behind shaft or drift lining, it is therefore prevented that a large amount of effect of water pressure on the borehole wall,
Reduce the borehole wall seepage flow damage, it is ensured that the borehole wall using safe.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.Wherein:
Fig. 1 is the overall system architecture schematic diagram of one embodiment of the invention；
Fig. 2 is the structural schematic diagram in Fig. 1 embodiment middle external tube；
Fig. 3 is the diagrammatic cross-section of embodiment in Fig. 1；
Fig. 4 is the outer tube structure schematic diagram in Fig. 1 embodiment；
Fig. 5 is the first construction method flow chart of one embodiment of the invention；
Fig. 6 is second of construction method flow chart of one embodiment of the invention.
Description of symbols: 1, salt water liquid supply pipe, 2, outer tube, 3, salt water outlet end, 4, slurries feed flow end, 5, air compressor machine,
6, grouting pump, 7, tee tube, 8, venting ball valve, 9, grouting pressure table, 10, into slurry ball valve, 11, connecting tube, 12, salt water helix tube
Road, 13, slip casting helical pipe, 14, upper end helical baffle, 15, lower end helical baffle, 16, slurries slurry outlet, 17, slurry pressure biography
Sensor, 18, solidification point sensor, 19, frozen soil, 20, non-frozen soil body.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the features in the embodiments and the embodiments of the present application be can be combined with each other.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the present invention rather than require the present invention that must be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.Term used in the present invention " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected,
It may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, for the common of this field
For technical staff, the concrete meaning of above-mentioned term can be understood as the case may be.
As shown in Figures 1 to 4, according to an embodiment of the invention, providing a kind of double-screw type slip casting type freezing plant, packet
Double-screw type slip casting type freezing pipe is included, double-screw type slip casting type freezing pipe includes salt water liquid supply pipe 1 and covers outside salt water liquid supply pipe 1
The outer tube 2 in portion is provided with two helical ducts, two helical ducts between the tube wall of salt water liquid supply pipe 1 and the tube wall of outer tube 2
Tube wall is shared with salt water liquid supply pipe 1 and outer tube 2, wherein a helical duct is salt water helical pipe 12, another spiral is logical
Road is slip casting helical pipe 13；Salt water helical pipe 12 is as the channel for freezing brine recycling, and slip casting helical pipe 13 is as ground
The channel of layer slip casting.
Hole there are two driveing at the upper end tube wall of outer tube 2, two holes are respectively as salt water outlet end 3 and slurries feed flow end 4, salt
Water outlet end 3 is connected with the hypothermic saline circulatory system, and slurries feed flow end 4 is connected with slurries supply system, it is ensured that hypothermic saline
Circularly cooling, recycle.Multiple slurries slurry outlets 16 are provided on outer tube 2.
Slurries feed flow end 4 is connected with one end of connecting tube 11, is provided in connecting tube 11 into slurry ball valve 10, connecting tube 11
The other end is connected with an end of tee tube 7, into slurry ball valve 10 and tee tube 7 between connecting tube 11 on (preferably adjacent to
At the position of tee tube 7) it is provided with grouting pressure table 9, second end of tee tube 7 is equipped with venting ball valve 8, tee tube 7
Third end be connected with grouting pump 6, pressure gauge is installed, grouting pump 6 is connected with air compressor machine 5 on grouting pump 6.
Double-screw type slip casting type freezing pipe be as salt water liquid supply pipe 1 it is nested with outer tube 2 made of concentric bilayer cylinder.Pass through
Concentrically nested integration is cast, and ensure that the uniformly salt water helical pipe 12 made of the inner wall of salt water liquid supply pipe 1 and outer tube 2
With slip casting helical pipe 13, salt water helical pipe 12 and slip casting helical pipe 13 is allowed to provide the salt water of uniform spiral flowing
And slurries.The brine pipeline for being used to freeze is arranged to spiral salt water helical pipe 12 to facilitate in freezing process, it is low
Warm saline is flowed upwards out from the bottom end of salt water liquid supply pipe 1, and is flowed in the shape of a spiral around salt water liquid supply pipe 1, that is, increases flow velocity,
It improves and freezes efficiency, and adequately absorb the cooling capacity of hypothermic saline in salt water liquid supply pipe 1.Spiral slip casting spiral is set
Pipeline 13 is convenient for during slip casting, and slurries are flowed downward out from slurries feed end 4, and flows in the shape of a spiral around salt water liquid supply pipe 1
It is dynamic, under the premise of not influencing to freeze, to there are the stratum of Groundwater Flow to have carried out grouting for water blocking, the shape around outer tube 2
At frozen soil 19, the periphery of frozen soil 19 is non-frozen soil body 20, improves the stability on stratum.
Further, the upper end of slip casting helical pipe 13 is equipped with upper end helical baffle 14, under slip casting helical pipe 13
End is equipped with lower end helical baffle 15.Lower end helical baffle 15, which is avoided, flows into note by the hypothermic saline that salt water liquid supply pipe 1 flows out
Helical pipe 13 is starched, upper end helical baffle 14 avoids the slurries inflow flowed by slurries feed flow end 4 and freezes salt water helical pipe
12, it is ensured that freeze the mutually indepedent flowing with hypothermic saline and grouting serous fluid.Salt water liquid supply pipe 1, freezes salt water spiral shell at outer tube 2
Coil road 12 and slip casting helical pipe 13 can be made of low temperature mild steel, can avoid ordinary carbon steel using low temperature carbon steel
Under cryogenic because toughness reduce occur brittle failure and caused by fracture of freezing pipe accident.
Further, multiple slurries slurry outlets 16 are spirally distributed and the position with slip casting helical pipe 13 on outer tube 2
Set correspondence.Slurries slurry outlet 16 is spirally distributed convenient for during slip casting, slurries can be with salt water liquid supply pipe 1 in the shape of a spiral
Slip casting is carried out to stratum, avoids and carries out slip casting and the non-uniform problem of bring slip casting in a direction.
Further, multiple grouting pressure sensors 17 are installed on outer tube 2.Preferably, multiple grouting pressure sensors
17 are spirally distributed and corresponding with the position of slip casting helical pipe 13 on outer tube 2, and grouting pressure sensor 17 goes out with slurries
Starch the intermittent distribution in hole 16.Grouting pressure sensor 17 is arranged such can monitor the slip casting on stratum during slip casting in real time
Pressure, and then the intensity and progress of slip casting can be effectively controlled, while the reliability of monitoring can be improved in spiral distribution.
Further, multiple solidification point sensors 18 are installed, multiple solidification point sensors 18 are in outer tube on outer tube 2
It is spirally distributed on 2 and corresponding with the position of salt water helical pipe 12.Solidification point sensor 18 is arranged such can be real-time
Monitoring stratum in freezing process and frozen-thaw process temperature change, and then can reasonably to freezing strength and time into
Row effectively control, efficiency is freezed in raising, while the reliability of monitoring can be improved in spiral distribution.
Further, slurries feed flow end 4 and connecting tube 11 are welded to connect.4 outside weld connecting tube 11 of slurries feed flow end, connecting tube
It is installed into slurry ball valve 10 on 11, and is connected with tee tube 7.By into slurry ball valve 10 and tee tube 7 between connecting tube 11 on
Grouting pressure table 9 is arranged to observe the variation of grouting pressure in (at the position of tee tube 7), avoids since pressure is excessive
And it is damaged to entirely grouting device is freezed.The lower end of tee tube 7 is equipped with venting ball valve 8, to observe slurry before slip casting
The other end of the mobility status of liquid, tee tube 7 is connected with grouting pump 6.Pressure gauge is installed on grouting pump 6, convenient for control slip casting
The intensity of 6 defeated slurries is pumped, grouting pump 6 is connected with air compressor machine 5.
The invention also discloses a kind of construction methods using above-mentioned double-screw type slip casting type freezing plant, as shown in figure 5,
Include the following steps:
(1) construction foot prop, installation drilling equipment are built；
(2) verticality for verifying drilling rod in drilling equipment, bores freezing hole；
(3) it is put into double-screw type slip casting type freezing pipe in freezing hole, and by the top of double-screw type slip casting type freezing pipe
It is welded on bracket；
(4) using the verticality of theodolite Inclination Measurement by Light method detection double-screw type slip casting type freezing pipe, then repetition measurement freezes
The depth in hole, and carry out salt water helical duct and suppress leak test；
(5) by after grouting equipment and corollary equipment all connection, check whether slip casting helical pipe 13 is normal, checks nothing
Grouting pump 6 is connected into slurries and pneumatic air compressor machine 5 after accidentally, opens venting ball valve 8, is closed into slurry ball valve 10, in venting ball valve 8
When having slurries outflow, slurries situation is observed, closes venting ball valve 8, it is right using slip casting helical pipe 13 into 10 pairs of ball valve of slurry to open
The soil body carries out freezing preceding pre-pouring grout；
(6) station equipment is freezed in installation, is debugged, test running, and suppresses leak test to the progress of salt water helical duct is secondary；
(7) actively freezed after freezing system works well；
(8) after to main structure construction, stopping is freezed, extracts double-screw type slip casting type freezing pipe and fill out freezing hole
It is real.
In this construction method, slip casting, the slurries of use are carried out to slip casting helical pipe 13 before Freezing stratum as rapid construction
For low temperature resistant injecting paste material, (it is respectively CN201510700150.8 that the ingredient of low temperature resistant injecting paste material herein, which can refer to application number,
With the low temperature resistant injecting paste material in the application for a patent for invention of CN201310333588.8), it avoids due to freezing after slip casting and makes
Low temperature cannot be born at institute's injection slurry and is failed.
The invention also discloses another construction methods using above-mentioned double-screw type slip casting type freezing plant, such as Fig. 6 institute
Show, includes the following steps:
(1) construction foot prop, installation drilling equipment are built；
(2) verticality for verifying drilling rod in drilling equipment, bores freezing hole；
(3) molding double-screw type slip casting type freezing pipe is put into freezing hole, and by double-screw type slip casting type freezing pipe
Top is welded on bracket；
(4) using the verticality of theodolite Inclination Measurement by Light method detection double-screw type slip casting type freezing pipe, then repetition measurement freezes
Hole depth, and carry out salt water helical duct and suppress leak test；
(5) station equipment is freezed in installation, is debugged, test running；
(6) actively freezed after freezing system works well；
(7) after to main structure construction, stop freezing；
(8) by after grouting equipment and corollary equipment all connection, check whether slip casting helical pipe 13 is normal, checks nothing
Grouting pump 6 is connected into slurries and pneumatic air compressor machine 5 after accidentally, opens venting ball valve 8, is closed into slurry ball valve 10, in venting ball valve 8
When having slurries outflow, slurries situation is observed, closes venting ball valve 8, opens and slip casting helical pipe 13 is frozen into slurry ball valve 10
Tie grouting behind shaft or drift lining.
In this construction method, slip casting is carried out to slip casting helical pipe 13 after frost wall freeze thawing, the slurries of use can
For general injecting paste material (general injecting paste material can carry out mortar depositing construction at normal temperature, based on cement-based grout: unconsolidated formation with
Based on cement-fly ash slurries, wind oxidized zone adds triethanolamine, salt or waterglass based on single liquid cement slurry when necessary
As external additive, to adjust serum viscosity and first final setting time) or low temperature resistant injecting paste material, it is complete to be respectively suitable for frozen soil
After defrosting and the grouting in soil mass of frost free period.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
Double-screw type slip casting type freezing plant provided by the invention and construction method, overcome existing freezing pipe and freezing process
Construction technology water flow flowing when freezing stratum containing Groundwater Flow causes the extremely difficult friendship circle of a large amount of loss of refrigeration capacity, frost wall, freezes
The knot period is longer, not can guarantee frost wall uniformly freezes, outer shaft wall is excessive by water pressure after freeze thawing and by slip casting and can not freeze
The problems such as knot construction combines.Different sequences of construction can be chosen by geological prospecting, by pre-pouring grout before freezing or freezed
The flowing of the effective control freezing water flooding of grouting behind shaft or drift lining, and the pressure of slip casting and the temperature of freezing process are detected in real time, favorably
It is rationally controlled in slip casting and freezing process, it is ensured that frost wall is formed and the safety in digging process.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of double-screw type slip casting type freezing plant, which is characterized in that including double-screw type slip casting type freezing pipe, double spiral shells
Rotating slip casting type freezing pipe includes salt water liquid supply pipe and covers the outer tube outside the salt water liquid supply pipe, in the salt water liquid supply pipe
Tube wall and the outer tube tube wall between be provided with two helical ducts, two helical ducts with the salt water feed flow
Pipe and the outer tube share tube wall, wherein a helical duct is salt water helical pipe, another helical duct is
Slip casting helical pipe；
Driveed at the upper end tube wall of the outer tube there are two hole, two holes respectively as salt water outlet end and slurries feed flow end,
Multiple slurries slurry outlets are provided on the outer tube；
Slurries feed flow end is connected with one end of connecting tube, is provided in the connecting tube into slurry ball valve, the connecting tube
The other end is connected with an end of tee tube, is provided with note in the connecting tube between slurry ball valve and the tee tube
Pressure gauge is starched, second end of the tee tube is equipped with venting ball valve, and the third end of the tee tube is connected with note
Stock pump is equipped with pressure gauge on the grouting pump, and the grouting pump is connected with air compressor machine.
2. double-screw type slip casting type freezing plant according to claim 1, which is characterized in that the slip casting helical pipe
Upper end is equipped with upper end helical baffle, and the lower end of the slip casting helical pipe is equipped with lower end helical baffle.
3. double-screw type slip casting type freezing plant according to claim 1, which is characterized in that the salt water liquid supply pipe, institute
It states outer tube, described freeze salt water helical pipe and the slip casting helical pipe is all made of low temperature mild steel and is made；
Slurries feed flow end and the connecting tube are welded to connect.
4. double-screw type slip casting type freezing plant according to claim 1, which is characterized in that multiple slurries slurry outlets
It is spirally distributed on the outer tube and corresponding with the position of the slip casting helical pipe.
5. double-screw type slip casting type freezing plant according to claim 4, which is characterized in that be equipped on the outer tube more
A grouting pressure sensor；Multiple grouting pressure sensors be spirally distributed on the outer tube and with the slip casting spiral shell
The position in coil road is corresponding, the grouting pressure sensor and the intermittent distribution of slurries slurry outlet.
6. double-screw type slip casting type freezing plant according to claim 1, which is characterized in that be equipped on the outer tube more
A solidification point sensor, multiple solidification point sensors be spirally distributed on the outer tube and with the salt water spiral shell
The position in coil road is corresponding.
7. using the construction method of double-screw type slip casting type freezing plant described in any one of claim 1~6, feature exists
In including the following steps:
(1) vertical freezing hole is bored in the soil body, and double-screw type slip casting type freezing pipe is installed in the freezing hole；
(2) grouting equipment is used, injecting paste material is injected by slip casting helical pipe, the soil body is carried out to freeze preceding pre-pouring grout；
(3) freezing system is used, refrigerant is injected by salt water helical duct, the soil body is freezed.
8. the method according to the description of claim 7 is characterized in that
The method also includes the hanging down using theodolite Inclination Measurement by Light method detection double-screw type slip casting type freezing pipe in step (1)
It directly spends, then the depth of repetition measurement freezing hole, and carries out the step of salt water helical duct suppresses leak test；
In step (2), after grouting equipment and corollary equipment are all connected, check whether slip casting helical pipe is normal, inspection
Look into it is errorless after grouting pump connected into slurries and pneumatic air compressor machine, open venting ball valve, close into slurry ball valve, to have in venting ball valve
When slurries flow out, slurries situation is observed, closes venting ball valve, is opened into slurry ball valve, the soil body is carried out using slip casting helical pipe
Freeze preceding pre-pouring grout；
The method also includes installing to freeze station equipment between step (2) and step (3), debugged, test running, and to salt
Water helical duct carries out secondary the step of suppressing leak test.
9. using the construction method of double-screw type slip casting type freezing plant described in any one of claim 1~6, feature exists
In including the following steps:
(1) vertical freezing hole is bored in the soil body, and double-screw type slip casting type freezing pipe is installed in the freezing hole；
(2) freezing system is used, refrigerant is injected by salt water helical duct, the soil body is freezed；
(3) grouting equipment is used, injecting paste material is injected by slip casting helical pipe, the soil body is carried out to freeze grouting behind shaft or drift lining.
10. according to the method described in claim 9, it is characterized in that,
The method also includes the hanging down using theodolite Inclination Measurement by Light method detection double-screw type slip casting type freezing pipe in step (1)
It directly spends, then the depth of repetition measurement freezing hole, and carries out the step of salt water helical duct suppresses leak test；
The method also includes between step (1) and step (2) installation freeze station equipment, debugged, test running the step of；
In step (3), after grouting equipment and corollary equipment are all connected, check whether slip casting helical pipe is normal, inspection
Look into it is errorless after grouting pump connected into slurries and pneumatic air compressor machine, open venting ball valve, close into slurry ball valve, to have in venting ball valve
When slurries flow out, slurries situation is observed, closes venting ball valve, is opened into slurry ball valve, the soil body is carried out using slip casting helical pipe
Freeze grouting behind shaft or drift lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129361.XA CN107034874B (en) | 2017-03-06 | 2017-03-06 | Double-screw type slip casting type freezing plant and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710129361.XA CN107034874B (en) | 2017-03-06 | 2017-03-06 | Double-screw type slip casting type freezing plant and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107034874A CN107034874A (en) | 2017-08-11 |
| CN107034874B true CN107034874B (en) | 2019-01-25 |
Family
ID=59533189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710129361.XA Active CN107034874B (en) | 2017-03-06 | 2017-03-06 | Double-screw type slip casting type freezing plant and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107034874B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086301A (en) * | 2018-01-31 | 2018-05-29 | 王楠 | Sensitivity is built, structures reinforce deformation controller in hole |
| CN110159273A (en) * | 2019-06-18 | 2019-08-23 | 中国水利水电第八工程局有限公司 | It is a kind of with flowing to the construction freezing method of handoff functionality with every leaky refrigerating plant |
| CN114017064B (en) * | 2021-11-02 | 2024-01-23 | 南京康泰建筑灌浆科技有限公司 | Remote feeding equipment for subway grouting |
| CN114017039B (en) * | 2021-11-11 | 2022-05-24 | 核工业井巷建设集团有限公司 | Drilling and blasting tunneling device and drilling and blasting tunneling method for weak water-rich stratum |
| CN114991118B (en) * | 2022-06-24 | 2024-03-15 | 中交一公局集团有限公司 | Soil body reinforcing method by freezing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100783356B1 (en) * | 2006-04-10 | 2007-12-10 | 한밭대학교 산학협력단 | Method for the treatment of wastewater using freeze concentration |
| KR20130106118A (en) * | 2012-03-19 | 2013-09-27 | 두산건설 주식회사 | Ground freezing pipe having inner filler and ground freezing method using freezimg pipe |
| CN104963334A (en) * | 2015-07-13 | 2015-10-07 | 南京林业大学 | Construction method for utilizing grouting freezing pipe to reinforce and freeze contact passage to restrain frost heaving and thaw collapsing |
| JP2015224521A (en) * | 2014-05-30 | 2015-12-14 | ケミカルグラウト株式会社 | Freezing method and freezing method execution system |
| CN105257297A (en) * | 2015-11-04 | 2016-01-20 | 中铁十八局集团有限公司 | Construction method for precisely controlling frozen soil curtain among pipes |
-
2017
- 2017-03-06 CN CN201710129361.XA patent/CN107034874B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100783356B1 (en) * | 2006-04-10 | 2007-12-10 | 한밭대학교 산학협력단 | Method for the treatment of wastewater using freeze concentration |
| KR20130106118A (en) * | 2012-03-19 | 2013-09-27 | 두산건설 주식회사 | Ground freezing pipe having inner filler and ground freezing method using freezimg pipe |
| JP2015224521A (en) * | 2014-05-30 | 2015-12-14 | ケミカルグラウト株式会社 | Freezing method and freezing method execution system |
| CN104963334A (en) * | 2015-07-13 | 2015-10-07 | 南京林业大学 | Construction method for utilizing grouting freezing pipe to reinforce and freeze contact passage to restrain frost heaving and thaw collapsing |
| CN105257297A (en) * | 2015-11-04 | 2016-01-20 | 中铁十八局集团有限公司 | Construction method for precisely controlling frozen soil curtain among pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107034874A (en) | 2017-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107034874B (en) | Double-screw type slip casting type freezing plant and construction method | |
| CN104963334B (en) | Reinforced with slip casting freezing pipe and freeze the construction method that service channel suppresses frozen swell and melt settlement | |
| CN105257297B (en) | The construction method of Frozen Soil Cylinder is precisely controlled between a kind of pipe | |
| CN105908765B (en) | For protecting the open trench tunnel water sealing structure and construction method of groundwater environment | |
| CN103291325B (en) | The preventing control method of Coal-mining Above Confined-water floor strata gushing water | |
| CN104695964B (en) | Subway shield tunnel freeze entering method | |
| CN109208637A (en) | Increase the construction method of open-cut station newly on the basis of existing tunnel | |
| CN105909260B (en) | Subway station water stop structure for protecting groundwater environment and construction method thereof | |
| CN103334770B (en) | One is grown up reverse-slope tunnel ultra high water pressure rich water zone of fracture construction method | |
| CN105781573B (en) | The two-tube canopy pipe-following drilling construction method of vcehicular tunnel bilayer sleeve reinforcement is worn under railway | |
| CN101463724A (en) | Construction method for connection passage by double-row hole horizontal freezing method | |
| CN104213932B (en) | A kind of projecting coal bed waterpower phase transformation fracturing coal uncovering method | |
| CN108678777A (en) | The method for protecting support of Tunnel Crushed Zone section | |
| CN101418567A (en) | Protective cutting construction method for tunnel segment | |
| CN104806253B (en) | A kind of construction method punched between rectangular top pipe passage | |
| CN107119669A (en) | For shield, the pre-pouring grout consolidated subsoil method in house is worn in side in water-rich sand layer | |
| CN106121686B (en) | Underground excavation tunnel water stop structure for protecting groundwater environment and construction method thereof | |
| CN110735653A (en) | deep-hole retreating type grouting water plugging construction method for igneous rock water-rich fault | |
| CN107762533A (en) | A kind of front pre-grouting method of high-pressure water-enriched weak surrounding rock mountain tunnel | |
| CN108756898A (en) | Using the front pre-grouting construction method of HSC grouting materials | |
| CN108071400A (en) | Horizontal freezing consolidation combines shield driving construction method with steel jacket box | |
| CN105863646A (en) | Freezing construction method in steel pipe curtain of large-section subsurface tunnel | |
| CN206636586U (en) | A kind of high security service channel freezing pipe cuts off rear port closing leakage-resistant device | |
| CN102518470A (en) | Method for preventing and controlling water by using freezing pipes in annular water intercepting tunnel | |
| CN109296371A (en) | 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 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |