CN105672241B - Jet is broken ground, and the processing of joint air bag soil compaction is deep to shake the device and method for falling into property loess - Google Patents
Jet is broken ground, and the processing of joint air bag soil compaction is deep to shake the device and method for falling into property loess Download PDFInfo
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- CN105672241B CN105672241B CN201610060736.7A CN201610060736A CN105672241B CN 105672241 B CN105672241 B CN 105672241B CN 201610060736 A CN201610060736 A CN 201610060736A CN 105672241 B CN105672241 B CN 105672241B
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- 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
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- 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
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The device and method of property loess is fallen into the invention discloses a kind of deep shake of joint air bag soil compaction processing of breaking ground of jet.Described device includes double-deck steel sleeve, top drive, air distribution connector, sand inlet, jet vent plug, rubber pneumatic bag, single-lobe non-return sand jet outlet and the regulation gate valve of an extensible, outer even air compressor, dry spraying machine and lifting device.The jet device that breaks ground is placed in shake and fallen into property loess by methods described, the macrovoid aerial construction that gases at high pressure destroy the soil body is injected by Multipoint synchronous, then compacted loose earth is expanded by air bag, after soil layer reach it is closely knit after, progressively discharge air in air bag, and high pressure filling sand backfill hole is accompanied by, and repeat the above steps paragraph by paragraph, it is final to realize the purpose for eliminating seismic subsidence features of foundation soil.The present invention will break ground and be completed with two process one-time continuous of soil compaction, easy to operate, efficient；And anhydrous construction environment avoids loess and meets the possible caused secondary destruction of water saturated yielding, it is adaptable to which deep shake falls into property loess foundation.
Description
Technical field
The device and method of property loess is fallen into the present invention relates to a kind of deep shake of joint air bag soil compaction processing of breaking ground of jet, is belonged to
Method for processing foundation and device field.
Background technology
In China, most of region residing for loess belongs to the multiple area of macroseism.Under moderately strong earthquake effect, loess is easily produced
The ground disasters such as shake is fallen into, liquefaction.So-called Loess Seismic Subsidence refers to that loess aerial construction under the dynamic loadings such as earthquake collapses mistake
The property of the subsidence of foundations is significantly shunk and triggered to effect, volume.Metastable structure containing built on stilts hole is that loess produces the sunken property of shake
Main cause.Under gravity, the powder of composition loess, which is produced, settles and contacts with each other, but due to the effect between particle
Power is enough to influence Action of Gravity Field, and some particle entrapments are not in the position relatively stablized on initial contact point.These powders
It is connected with each other, forms the macrovoid " aerial construction " of weak cementing and open arrangement, causes shear strength strong much smaller than its compression
Degree.Shear stress is delivered to hole to cause failure by shear from loess skeleton under dynamic loading, produces power vulnerability.It is right
In being built in the building that shake is fallen on property loess foundation, if basement process is improper, easily occur tilting under geological process, under
The serious consequence such as fall into, ftracture, collapsing, thus, it is necessary to which height weight is given in the processing to this kind of Special soil in engineering construction
Depending on.
The characteristics of falling into property loess macrovoid, low compactness for shake, it is main at present using dynamic consolidation method, compaction pile method,
The method for processing foundation such as replacement cushion method, grouting and reinforcing method and draining concretion method.The main feature of these methods has：1. power is consolidated
Connection：Also known as heavy-tamping method, i.e., rammed using weight to ground, it is adaptable to handles the soil body in middle-shallow layer depth bounds,
It is limited to the compacted effect that has deep soil.2. grouting and reinforcing method：Hardening slurry is fallen into property loess by high-tension apparatus injection shake
Ground, fills its hole and gap, and is spread, solidified by slurries, improving soil body physico-mechanical properties.This method cost compared with
, easily there is running pulp spillage phenomenon in height, the more difficult control of grout coordinate ratio, causes the waste and environmental pollution of material.3. compaction pile method：
To vibrate, impact or with the method pore-forming such as sleeve pipe, sand, stone, dirt, lime or other materials are then inserted into hole, is being subject to
Jolt ramming and composite foundation is constituted by solid soil as the closely knit pile body that is relatively large in diameter, and with stake week, built-loading is supported jointly.
Compaction pile method shakes sunken property to elimination and had certain effect, but fails to eliminate the sunken property of shake of loess under moderately strong earthquake effect.4. soil removal and replacement
Sand-gravel-cushion Technioue：It is that subbasal shake is fallen into property loess formation all to dig out, and instead artificial cushion is used as building supporting course
Processing method.Mainly for the treatment of the little shallow layer foundation of building load, it is impossible to replace deep layer shake and fall into property loess.
Deep shake can not effectively be handled based on current method for processing foundation and fall into property loess this present situation, the present invention is fallen into from shake
Property loess traffic micro-simulation start with, by way of Multipoint synchronous high-pressure jet, macrovoid to loess, weak structure are carried out
Destruction, eliminates shake caused by soil body aerial construction and falls into property harm.Meanwhile, the inflating rubber air bag that device lower end is set can be squeezed effectively
It is close break ground after loose earth, and be aided with high-pressure sand blast filling space, improve the overall compactness of the soil body, and finally eliminate loess
The shake of ground falls into property, reaches the purpose for improving foundation bearing capacity and ensureing superstructure safety.
The content of the invention
The present invention is intended to provide a kind of jet is broken ground, the deep shake of joint air bag soil compaction processing falls into the device and method of property loess.
The device of property loess, including bilayer are fallen into the invention provides a kind of deep shake of joint air bag soil compaction processing of breaking ground of jet
Steel sleeve, double-deck steel sleeve is located in drilling, and double-deck steel sleeve is made up of outer tube and internal core pipe, the outer tube and core pipe point
It is not connected through a screw thread and is constituted by some pipe nipples；Cannula tip drives for top, and top drives top and is provided with sand inlet and air distribution connector, distribution
Joint includes outer tube air distribution connector and core pipe air distribution connector；Sand inlet is connected by blast tube with dry spraying machine, and air distribution connector passes through
High-pressure jet flexible pipe connects air compressor；The core pipe is steel single spraying tracheae, is connected with the core pipe air distribution connector of top, outside
Manage as dry sand and jet joint channel, sand inlet, the connection of outer tube jet joint of outer tube and top；Core pipe bottom for it is tubaeform with
Outer tube is connected, and outer pipe bottom is provided with rubber pneumatic bag, and the outer segment of rubber pneumatic bag parcel is provided with the fumarole communicated with core pipe, air
Compressor carried out by core pipe to rubber pneumatic bag it is high-pressure aerated, above rubber pneumatic bag the left and right sides be evenly distributed with jet vent plug and
Gate valve is provided with the inside of single-lobe non-return sand jet outlet, outer tube, the opening and closing of jet vent plug and single-lobe non-return sand jet outlet is controlled by gate valve；Top
Drive is connected with lifting device.
In said apparatus, a diameter of 10mm of the core pipe, a diameter of 70mm of outer tube, the length of the pipe nipple, which is equal to, divides
The soil thickness of section processing.
In said apparatus, 2-3 jet vent plug and a single-lobe non-return sandblasting are respectively set respectively in the outer tube lower end left and right sides
Mouthful, valve prevents sand or soil backflow from blocking the circulation of sand in pipe, and jet vent plug is arranged on above sand jet outlet；Sand jet outlet lower end is rubber
Glue air bag, the upper both sides of steel pipe rubber pneumatic bag cuff section are vertically arranged with 4-5 fumarole, and the spacing of fumarole is
20-40mm；A diameter of 30mm of single-lobe non-return sand jet outlet, jet vent plug mouthful and jet bore dia are 5mm.
In said apparatus, according to residing soil depth and the soft or hard degree of the soil body, the air pressure control of rubber pneumatic bag intracavitary is existed
Air pressure in 10-1000kPa, outer lumen, i.e. jet break ground air pressure, control in 0.5-5MPa.
In said apparatus, the rubber pneumatic bag cuff section is provided with 4-5mm groove, does not protrude, uses after rubber pneumatic bag fastening
To prevent from air bag decentralization process being damaged by hole wall friction, and two layers of plastic thin films is bonded in gasbag outer surface, prevented
Sleeve shell material is attached to balloon surface, influences its expansion character；After rubber pneumatic bag inflation, in ellipsoid cylindricality, a diameter of 0.1- is stretched
1.0m, length is 1.0m-5m.
In said apparatus, the gate valve is made up of handwheel, flashboard, valve rod, screw rod, and valve plate and handwheel are connected by screw rod,
Gate valve bottom is provided with flashboard, and flashboard is welded on the bottom of valve rod, and flashboard is contacted with the inwall of outer tube.By rotating handwheel, control
The advance and retreat of threaded stem processed, the opening and closing conversion of sand jet outlet and jet vent plug is realized in lifting and decline with ovable valve stem bottom flashboard.
In said apparatus, the high-pressure jet flexible pipe is provided with valve.The lifting device is builds small loop wheel machine, by electronic
Machine, decelerator, clutch, brake, rope roll and steel wire rope are combined.
Broken ground the method that the deep shake of joint air bag soil compaction processing falls into property loess the invention provides a kind of jet, using above-mentioned
Device, comprises the following steps：
1) the native surface of smooth location, removes all grounds, underground obstacle in place, excludes excess surface water, and making is interim
Road, to lay machinery；
2) rig is in place, is drilled on the ground by spacing 4-5m quincuncial arrangements, aperture is 100-150mm；Drilling
During use straightening frame tappet, to good stake position, drilling of machining is unearthed, the high-quality sposh that modulates in advance of injection in hole
Retaining wall is starched, drills to projected depth, sleeve shell material is pumped to bottom hole by drilling rod pump, sleeve shell material to aperture is irrigated from bottom to top and is overflow
Untill the virgin pulp liquid for going out to meet concentration requirement；
3) drilling equipment is proposed, steel pipe device is transferred in each drilling simultaneously, modeling of being double-baged before decentralization outside air bag
Expect film, to prevent sleeve shell material and inflating rubber balloon contacts, influence the expansion character of air bag；A sleeve pipe is put into each drilling
Device, its bottom reaches bottom hole, and makes each drilling middle sleeve length as far as possible identical, and closing sleeve shell material is finally poured into aperture,
Fill hole internal clearance；
4) after sleeve shell material is conserved 5-7 days, construction of breaking ground can be carried out；Air compressor is opened, the air pressure of connection core pipe is closed
Valve, opens the air pressure valve of connection outer tube, adjusts air pressure, and stably in design load, by rotating the manual veneer gate valve of dark bar
On handwheel decline flashboard, close sand jet outlet, open jet vent plug mouthful；Open top to drive, make casing bit in rotation by spray
Gas vent plug sprays into gases at high pressure, breaks through sleeve shell material, cutting soil；Meanwhile, the sleeve pipe of rotation is slowly lifted using lifting device,
The height once lifted is not more than the length of rubber pneumatic bag；
5) sleeve lift in place after, close top drive and outer tube air pressure valve, open core pipe air pressure valve, pass through fumarole
Inflated into rubber pneumatic bag, make its inflation, the loose earth after compacted cutting；
6) expand and continue after 2-3min, air bag volume is gradually reduced in slow pumping, while opening dry spraying machine, rotate hand
Wheel opens single-lobe non-return sand jet outlet, sprays into thin dry sand, the space that filling deflated balloon leaves；Air bag is expanded again afterwards, is squeezed
The close sand inserted, the inflation-back-up sand process is circulated 2 ~ 3 times, to reach optimal densification effect；
7) after the back-up sand of one section of completion is compacted, three above construction procedure is repeated to next section, until having handled
Whole soil thickness, after the completion of each section processing, the sleeve pipe elevated above the soil is pulled down by nipple, then connect equipped with top drive
And gas, the sleeve pipe of sand joint, continue with；
During concrete operations Multipoint synchronous jet, i.e., each hole inner sleeve are carried out in neighbouring four drilling arranged in blossom type
Remain at same depth, and speed and jet air pressure are lifted using identical, realization acts in agreement, to slow down high pressure gas
The rate of decay of the body in the soil body, improves the effect of breaking ground in process range.
Beneficial effects of the present invention：
（1）The present invention by high-pressure jet destroy loess macrovoid aerial construction, and combine air bag expansion solid soil,
The space of recharge dry sand filling simultaneously, will significantly improve the compactness and bearing capacity of original loess foundation, eliminates its shake and falls into property, it is to avoid
Macroporous structure destroys and triggers the subsidence of foundations under geological process；
（2）Compared to the construction method that other processing shakes fall into property, the present invention increases the processing depth of loess foundation, and applies
Work is simply convenient, it is to avoid large area is excavated and possible environmental pollution, and with low cost, obvious economic；
（3）The present invention will break ground and be completed with two process one-time continuous of soil compaction, easy to operate, efficient；Meanwhile, anhydrous construction
Environment avoid loess meet water saturated yielding may caused by secondary destruction, it is adaptable to strong rammer, change fill out and the conventional method such as compaction pile without
The deep shake of method processing falls into property loess foundation.
Brief description of the drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the profile of Fig. 1 lower ends.
Fig. 3 is the sectional view in Fig. 2 along line A-A.
Fig. 4 is the structural representation of gate valve.
Fig. 5 is drilling arrangement schematic diagram.
Fig. 6 is to handle the construction procedure schematic diagram that shake falls into property loess foundation using apparatus of the present invention.
In figure：1 is outer tube, and 2 be core pipe, and 3 drive for top, and 4 be sand inlet, and 5 be outer tube air distribution connector, and 6 be that core pipe distribution connects
Head, 7 be air compressor, and 8 be dry spraying machine, and 9 be blast tube, and 10 be high-pressure jet flexible pipe, and 11 be jet vent plug, and 12 stop for single-lobe
Sand jet outlet is returned, 13 be rubber pneumatic bag, and 14 be fumarole, and 15 be sleeve shell material, and 16 be gate valve, and 17 be screw rod, and 18 be valve rod, and 19 be lock
Plate, 20 be handwheel, and 21 be lifting apparatus.1. it is and 2. break ground gas and sandblasting passage, is 3. airbag aeration gas passage.
Embodiment
The present invention is further illustrated below by embodiment, but is not limited to following examples.
Embodiment 1：
As shown in Fig. 1 ~ 3, a kind of jet is broken ground, and the processing of joint air bag soil compaction is deep to shake the device for falling into property loess, including bilayer
Steel sleeve, double-deck steel sleeve is located in drilling, and double-deck steel sleeve is made up of outer tube 1 and internal core pipe 2, the outer tube 1 and core
Pipe 2 is connected through a screw thread by some pipe nipples constitutes respectively；Cannula tip drives 3 for top, and top drives 3 tops and is provided with sand inlet 4 and distribution
Joint, air distribution connector includes outer tube air distribution connector 5 and core pipe air distribution connector 6；Sand inlet 4 is connected by blast tube 9 with dry spraying machine 8
Connect, air distribution connector connects air compressor 7 by high-pressure jet flexible pipe 10；The core pipe 2 is steel single spraying tracheae, with top
Core pipe air distribution connector 6 is connected, and outer tube 1 is sand inlet 4, the outer tube jet joint of dry sand and jet joint channel, outer tube 1 and top
5 connections；The bottom of core pipe 2 connects to be tubaeform with outer tube 1, and the bottom of outer tube 1 is provided with rubber pneumatic bag 13, and it is outer that rubber pneumatic bag 13 is wrapped up
Pipeline section is provided with the fumarole 14 communicated with core pipe, and air compressor 7 carries out high-pressure aerated, rubber by core pipe 2 to rubber pneumatic bag 13
The top left and right sides of glue air bag 13 is evenly distributed with jet vent plug 11 and single-lobe non-return sand jet outlet 12, and the inner side of outer tube 1 is provided with gate valve
16, the opening and closing of jet vent plug 11 and single-lobe non-return sand jet outlet 12 is controlled by gate valve 16；Drive 3 and be connected with lifting device 21 in top.
Further, the lifting device is builds small loop wheel machine, by motor, decelerator, clutch, brake, rope roll
Combined with steel wire rope.
Further, a diameter of 10mm of the core pipe, a diameter of 70mm of outer tube, the length of the pipe nipple are equal to segmentation
The soil thickness of processing.
Further, 3 jet vent plugs and a single-lobe non-return sand jet outlet are respectively set respectively in the outer tube lower end left and right sides, are sprayed
Gas vent plug is arranged on above sand jet outlet；Sand jet outlet lower end is rubber pneumatic bag, and steel pipe rubber pneumatic bag cuff section goes up both sides along vertical side
To being arranged with 4 fumaroles, fumarole between the upper and lower away from for 20-40mm；A diameter of 30mm of single-lobe non-return sand jet outlet, jet
Vent plug mouthful and jet bore dia are 5mm.
Further, according to residing soil depth and the soft or hard degree of the soil body, the air pressure of rubber pneumatic bag intracavitary is controlled in 10-
Air pressure in 1000kPa, outer lumen, i.e. jet break ground air pressure, control in 0.5-5MPa.
Further, the rubber pneumatic bag cuff section is provided with 4-5mm groove, does not protrude, is used to after rubber pneumatic bag fastening
Prevent from air bag decentralization process being damaged by hole wall friction, and two layers of plastic thin films is bonded in gasbag outer surface, prevent set
Shell material is attached to balloon surface, influences its expansion character；After rubber pneumatic bag inflation, in ellipsoid cylindricality, a diameter of 0.1- is stretched
1.0m, length is 1.0m-5m.
Further, the high-pressure jet flexible pipe is provided with valve.
As shown in figure 4, the gate valve 16 is made up of handwheel 20, flashboard 19, valve rod 18, screw rod 17, valve rod 18 and handwheel 20
Connected by screw rod 17, the bottom of gate valve 16 is provided with flashboard 19, flashboard 19 is welded on the bottom of valve rod 18, and flashboard 19 and outer tube
Inwall is contacted.By rotating handwheel, the advance and retreat of threaded stem are controlled, spray is realized in lifting and decline with ovable valve stem bottom flashboard
The opening and closing conversion of sand mouthful and jet vent plug.
Fig. 5 is borehole pattern, the 4 per treatment diamond-shaped areas contacted that drill, parallel to the right to move after being disposed
Motivation tool and device, handle subsequent region successively.
Fig. 6 is used to handle the construction procedure schematic diagram that shake falls into property loess foundation for the present invention.Wherein 6-1 is drilling；6-2 is
Drilling fills sleeve shell material after finishing；6-3 treats that sleeve shell material solidifies to be put into steel bushing pipe device；6-4 is rotates and upgrades device, and jet is broken
Soil；6-5 is that rubber pneumatic bag inflates solid soil；6-6 is that extruding finishes rear sandblasting filling space.
The jet of the present embodiment break ground joint air bag soil compaction reinforce shake fall into property loess foundation construction method comprise the following steps：
1) smooth Ground Treatment place surface, removes all grounds, underground obstacle in place, excludes excess surface water, paving
Temporary road etc. is built, so as to the placement of machinery.
2) rig is in place, and such as Fig. 5 drills on the ground by spacing 4-5m quincuncial arrangements（Four drillings form water chestnut
Shape structure）, aperture is that straightening frame tappet is used in 100mm, boring procedure, such as Fig. 6-1 pairs good stakes positions（With contraposition circle）, start machine
Device is crept into, and is unearthed, and the high-quality thin mud retaining wall modulated in advance, as in fig. 6-2, drilling to projected depth are injected in hole（Need
The jacketed hoop segment length of loess thickness of processing）, sleeve shell material is pumped to bottom hole by drilling rod pump, sleeve shell material is irrigated extremely from bottom to top
Untill the virgin pulp liquid for meeting concentration requirement is overflowed in aperture.
3) as shown in Fig. 6-3, drilling equipment is proposed, steel pipe device is transferred in hole, in air bag outsourcing two before lower section
Layer plastic sheeting, to prevent sleeve shell material and inflating rubber balloon contacts, influences the expansion character of air bag.One is put into each drilling
Casing bit, its bottom reaches bottom hole, and makes each drilling middle sleeve length as far as possible identical, and closing sheath body is finally poured into aperture
Material, fills hole internal clearance.
4) after sleeve shell material is conserved 5-7 days, some strength is reached, construction of breaking ground can be carried out.
5) air compressor is opened, the air pressure valve of connection core pipe is closed, the air pressure valve of connection outer tube, regulation is opened
Air pressure, and stably in design load, driven while opening top.As shown in Fig. 6-4, set tube edge rotation side sprays into high pressure by jet vent plug
Gas, breaks through sleeve shell material, cutting soil.The sleeve pipe of rotation is slowly lifted using lifting apparatus simultaneously, the height once lifted
For air bag segment length.
6) sleeve lift in place after, close top drive and outer tube air pressure valve, open core pipe air pressure valve, such as Fig. 6-5 institutes
Show, inflated by fumarole into rubber pneumatic bag, make its inflation, extrusion soil makes its closely knit.
7) expand and continue after 2-3min, air bag volume is gradually reduced in slow pumping, during deflated balloon, open dry
Spraying machine, rotation hand wheel opens single-lobe non-return sand jet outlet, as shown in Fig. 6-6, sprays into thin dry sand, the sky that filling deflated balloon leaves
Gap, expands air bag again afterwards, the compacted sand inserted, and the inflation-back-up sand process is circulated 2 ~ 3 times, to reach that optimization process is imitated
Really.
Complete a section back-up sand it is compacted after, next section is repeated more than 5) -7) three construction procedures, until whole
Soil thickness is disposed.After the completion of each section processing, the casing section elevated above the soil can be pulled down, connect driven equipped with top and
The sleeve pipe of gas, sand joint, is continued with.It is same that multiple spot can be carried out during concrete operations in neighbouring four drilling arranged in blossom type
Jet is walked, i.e., each hole inner sleeve is remained at same depth, and speed and jet air pressure are lifted using identical, realize step
Adjust consistent, to slow down the rate of decay of the gases at high pressure in the soil body, improve the effect of breaking ground in process range.
Claims (9)
1. a kind of jet is broken ground, the deep shake of joint air bag soil compaction processing falls into the device of property loess, it is characterised in that：Including clad steel
Sleeve pipe, double-deck steel sleeve is located in drilling, and double-deck steel sleeve is made up of outer tube and internal core pipe, the outer tube and core pipe difference
It is connected through a screw thread and is constituted by some pipe nipples；Cannula tip drives for top, and top drives top and is provided with sand inlet and air distribution connector, and distribution connects
Head includes outer tube air distribution connector and core pipe air distribution connector；Sand inlet is connected by blast tube with dry spraying machine, and air distribution connector passes through height
Press jet flexible pipe connection air compressor；The core pipe is steel single spraying tracheae, is connected with the core pipe air distribution connector of top, outer tube
For dry sand and jet joint channel, the sand inlet of outer tube and top, the connection of outer tube jet joint；Core pipe bottom for it is tubaeform with it is outer
Pipe is connected, and outer pipe bottom is provided with rubber pneumatic bag, and the outer segment of rubber pneumatic bag parcel is provided with the fumarole communicated with core pipe, air pressure
Contracting machine carried out by core pipe into rubber pneumatic bag it is high-pressure aerated, above rubber pneumatic bag the left and right sides be evenly distributed with jet vent plug and
Gate valve is provided with the inside of single-lobe non-return sand jet outlet, outer tube, the opening and closing of jet vent plug and single-lobe non-return sand jet outlet is controlled by gate valve；Top
Drive is connected with lifting device.
2. jet according to claim 1 is broken ground, the deep shake of joint air bag soil compaction processing falls into the device of property loess, its feature
It is：A diameter of 10mm of the core pipe, a diameter of 70mm of outer tube, the length of the pipe nipple are equal to the soil layer thickness of segment processing
Degree.
3. jet according to claim 1 is broken ground, the deep shake of joint air bag soil compaction processing falls into the device of property loess, its feature
It is：Respectively set 2-3 jet vent plug and a single-lobe non-return sand jet outlet respectively in the outer tube lower end left and right sides, jet vent plug is set
Above sand jet outlet；Sand jet outlet lower end is rubber pneumatic bag, and the upper both sides of rubber pneumatic bag cuff section are vertically arranged with 4-5
Fumarole, the spacing of fumarole is 20-40mm；A diameter of 30mm of single-lobe non-return sand jet outlet, jet vent plug mouthful and fumarole are straight
Footpath is 5mm.
4. jet according to claim 1 is broken ground, the deep shake of joint air bag soil compaction processing falls into the device of property loess, its feature
It is：According to residing soil depth and the soft or hard degree of the soil body, the air pressure of rubber pneumatic bag intracavitary is controlled in 10-1000kPa, outer tube
Intracavitary air pressure, i.e. jet break ground air pressure, control in 0.5-5MPa.
5. jet according to claim 1 is broken ground, the deep shake of joint air bag soil compaction processing falls into the device of property loess, its feature
It is：The cuff section of the rubber pneumatic bag is provided with 4-5mm groove, is not protruded after rubber pneumatic bag fastening, and in gasbag outer surface
Two layers of plastic thin films is bonded, after rubber pneumatic bag inflation, in ellipsoid cylindricality, a diameter of 0.1-1.0m is stretched, length is 1.0m-5m.
6. jet according to claim 1 is broken ground, the deep shake of joint air bag soil compaction processing falls into the device of property loess, its feature
It is：The gate valve is made up of handwheel, flashboard, valve rod, screw rod, and valve plate and handwheel are connected by screw rod, and gate valve bottom is provided with lock
Plate, flashboard is welded on the bottom of valve rod, and flashboard is contacted with the inwall of outer tube.
7. jet according to claim 1 is broken ground, the deep shake of joint air bag soil compaction processing falls into the device of property loess, its feature
It is：The high-pressure jet flexible pipe is provided with valve.
8. jet according to claim 1 is broken ground, the deep shake of joint air bag soil compaction processing falls into the device of property loess, its feature
It is：The lifting device is combined to build small loop wheel machine by motor, decelerator, clutch, brake, rope roll and steel wire rope
Form.
A kind of method that the deep shake of joint air bag soil compaction processing falls into property loess 9. jet is broken ground, using any one of claim 1 ~ 8
Described device, it is characterised in that：
1) the native surface of smooth location, removes all grounds, underground obstacle in place, excludes excess surface water, making temporary road
Road, to lay machinery；
2) rig is in place, is drilled on ground by spacing 4-5m quincuncial arrangements, aperture is 100-150mm；Used in boring procedure
Straightening frame tappet, to good stake position, drilling of machining is unearthed, and the high-quality thin mud retaining wall modulated in advance is injected in hole, is bored
Sleeve shell material is pumped to bottom hole by hole to projected depth by drilling rod pump, and sleeve shell material to aperture spilling is irrigated from bottom to top and meets dense
Untill spending desired virgin pulp liquid；
3) drilling equipment is proposed, casing bit is transferred in each drilling simultaneously, it is thin in air bag outsourcing two layers of plastic before decentralization
Film, to prevent sleeve shell material and inflating rubber balloon contacts, influences the expansion character of air bag；A sleeve pipe dress is put into each drilling
Put, its bottom reaches bottom hole, and makes each drilling middle sleeve length as far as possible identical, and closing sleeve shell material is finally poured into aperture, is filled out
Fill hole internal clearance；
4) after sleeve shell material is conserved 5-7 days, construction of breaking ground can be carried out；Air compressor is opened, the air pressure valve of connection core pipe is closed
Door, opens the air pressure valve of connection outer tube, adjusts air pressure, and stably in design load, by rotating on the manual veneer gate valve of dark bar
Handwheel decline flashboard, close sand jet outlet, open jet vent plug mouthful；Open top to drive, make casing bit in rotation by jet
Vent plug sprays into gases at high pressure, breaks through sleeve shell material, cutting soil；Meanwhile, the sleeve pipe of rotation is slowly lifted using lifting device, one
The height of secondary lifting should be not more than the length of rubber pneumatic bag；
5) sleeve lift in place after, close top and drive and outer tube air pressure valve, open core pipe air pressure valve, by fumarole to rubber
Inflated in glue air bag, make its inflation, the loose earth after compacted cutting；
6) expand and continue after 2-3min, air bag volume is gradually reduced in slow pumping, while opening dry spraying machine, rotation hand wheel is opened
Single-lobe non-return sand jet outlet is opened, thin dry sand, the space that filling deflated balloon leaves is sprayed into；Expand air bag again afterwards, it is compacted to fill out
The sand entered, the inflation-back-up sand process is circulated 2 ~ 3 times, to reach optimal densification effect；
7) after the back-up sand of one section of completion is compacted, three above construction procedure is repeated to next section, until processing is complete individual
Soil thickness, after the completion of the processing of each section, the sleeve pipe elevated above the soil is pulled down by nipple, then connect driven equipped with top and
The sleeve pipe of gas, sand joint, is continued with；
Multipoint synchronous jet is carried out in neighbouring four drilling arranged in blossom type during concrete operations, i.e., each hole inner sleeve is all the time
It is maintained at same depth, and speed and jet air pressure is lifted using identical, realization acts in agreement, existed with slowing down gases at high pressure
The rate of decay in the soil body, improves the effect of breaking ground in process range.
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| CN108005058B (en) * | 2017-12-14 | 2019-09-10 | 武汉大学 | Soft soil foundation extrusion and vibration consolidation method |
| CN108843274B (en) * | 2018-06-28 | 2022-07-29 | 东北石油大学 | Hydraulic jet self-rotating scraper bit and carbon dioxide injection well blockage removal process |
| CN108867614B (en) * | 2018-07-20 | 2020-08-21 | 四川锦城智信建设工程有限公司 | Construction method for paving road on debris flow soft foundation |
| CN110726588A (en) * | 2019-12-03 | 2020-01-24 | 张瑞钦 | Drilling and coring device for road construction |
| CN111851462A (en) * | 2020-07-31 | 2020-10-30 | 中南林业科技大学 | Soft soil foundation treatment method |
| CN114575401B (en) * | 2022-05-07 | 2022-07-19 | 安徽送变电工程有限公司 | Square pit digging robot and digging method applying same |
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| TW463011B (en) * | 1999-12-10 | 2001-11-11 | C & Amp M Hi Tech Engineering | Ground base modification: horizontal compaction method |
| CN1664245A (en) * | 2005-04-01 | 2005-09-07 | 东南大学 | Operation method for consolidating soft soil foundation by pneumatic flerry vacuum preloading method |
| CN101033609A (en) * | 2007-03-27 | 2007-09-12 | 天津大学 | Method of reinforcing soft soil foundation by gas extrusion drainage and used gasbag |
| CN203383203U (en) * | 2013-07-10 | 2014-01-08 | 浙江大学 | Eletro-osmosis combination air-pressure splitting device |
| CN203475411U (en) * | 2013-08-28 | 2014-03-12 | 东南大学 | Structure for reinforcing dredger fill soil foundations by drainage wells combined with air pressure splitting |
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| JPS63206514A (en) * | 1987-02-20 | 1988-08-25 | Tagami Minoru | Draining work for improving soft ground |
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| TW463011B (en) * | 1999-12-10 | 2001-11-11 | C & Amp M Hi Tech Engineering | Ground base modification: horizontal compaction method |
| CN1664245A (en) * | 2005-04-01 | 2005-09-07 | 东南大学 | Operation method for consolidating soft soil foundation by pneumatic flerry vacuum preloading method |
| CN101033609A (en) * | 2007-03-27 | 2007-09-12 | 天津大学 | Method of reinforcing soft soil foundation by gas extrusion drainage and used gasbag |
| CN203383203U (en) * | 2013-07-10 | 2014-01-08 | 浙江大学 | Eletro-osmosis combination air-pressure splitting device |
| CN203475411U (en) * | 2013-08-28 | 2014-03-12 | 东南大学 | Structure for reinforcing dredger fill soil foundations by drainage wells combined with air pressure splitting |
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