CN205077490U - Prevent suck -back and prevent slip casting device that deposits in deep full water sand bed - Google Patents

Prevent suck -back and prevent slip casting device that deposits in deep full water sand bed Download PDF

Info

Publication number
CN205077490U
CN205077490U CN201520881330.6U CN201520881330U CN205077490U CN 205077490 U CN205077490 U CN 205077490U CN 201520881330 U CN201520881330 U CN 201520881330U CN 205077490 U CN205077490 U CN 205077490U
Authority
CN
China
Prior art keywords
slip casting
tube
grouting
core pipe
slurry outlet
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
Application number
CN201520881330.6U
Other languages
Chinese (zh)
Inventor
李建文
徐拴海
曹祖宝
李雄伟
袁克阔
王新锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Coal Science and Technology Co.,Ltd.
Original Assignee
Xian Research Institute Co Ltd of CCTEG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xian Research Institute Co Ltd of CCTEG filed Critical Xian Research Institute Co Ltd of CCTEG
Priority to CN201520881330.6U priority Critical patent/CN205077490U/en
Application granted granted Critical
Publication of CN205077490U publication Critical patent/CN205077490U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model provides a prevent suck -back and prevent slip casting device that deposits in deep full water sand bed, includes slip casting outer tube and slip casting core pipe, the one end of slip casting outer tube is sealed, other end opening and cup joint in slip casting core pipe, embolia through a threaded bush at the middle part of slip casting core pipe the slip casting outer tube, the periphery of slip casting outer tube is dug has multiunit out grouting holes, has arranged two or four at same radial a set of out grouting holes, and in the axial multiunit out grouting holes equidistance interval or equidistance interval not, be equipped with a plurality of rubber sleeves on the slip casting outer tube, each rubber sleeve covers respectively in a set of out grouting holes, therefore, the utility model discloses can effectively prevent the problem of injection -production pipe column suck -back in deep full water sand bed, can realize that the thick liquid forms no dead angle and flows in the slip casting device to single drilling slip casting many times, effectively avoid the segregation of thick liquid in the slip casting pipe to deposit, convenient operation, slip casting is efficient, and the slip casting process is controllable, and is good to sand bed stabilizing effect.

Description

Anti-suck sludge proof grouting device in deep saturated sand
Technical field
The utility model relates to the technical field that mine shaft sandy-silt seepage is administered, and particularly relates to one anti-suck sludge proof grouting device in deep saturated sand.
Background technology
Mine shaft (vertical or inclined shaft) is when passing through deep saturated sand, and in order to improve shaft excavation efficiency and anti-sealing blowout enters the shaft excavation scope of operation, freezing process is one of reservoir treating method comparatively commonly used.Saturated sand in the stratum certain limit utilizing freezing process to be passed through by pit shaft freezes, flowable water and loose sand are cured as a class Seed harvest, then in such Seed harvest, carry out shaft excavation operation, the shaft excavation scope of operation thus can keep a metastable few water environment.To construct and after entering basement rock, can stop Freezing stratum as rapid, saturated sand will thaw gradually completing pit shaft sand section.Fading away of frost wall, by link up pit shaft and frost wall periphery saturated sand between hydraulic connection, pit shaft proceeds to full water environment by few water frozen environment.
Desirable shaft structure is a water proof pressurized structure closed surrounding formation height, is generally formed by multistory reinforced concreting, but due to the construction technology reason of pit shaft reality, can produce more construction gap in pit shaft total length and connect stubble.In addition, due to construction quality or working-procedure problem, also weak part may be there is on pit shaft.When layer of sand is still in frozen state, thicker frost wall can bear larger water pressure, is enclosed in by pit shaft in the space of a pressure equalizing.But after frozen ground thaws, pit shaft directly bears larger formation water pressure, pit shaft connect batch position due to sealing poor, the disaster that seeps water may be there is, and the position possibility compression damage that pit shaft is weaker, seep water, gushing water, the disaster such as sand of bursting, now existing multiple mine occurred repeatedly affect work plane operation or flood well disaster.For above-mentioned disaster, if when only having infiltration or gushing water, by high strength draining, in the wellbore respective handling is carried out to well bore wall simultaneously, the object of administering infiltration or gushing water can be reached.If but with sand of bursting in exiting water process, high strength draining will form disturbance to large-scale layer of sand, and cause layer of sand to liquefy, a large amount of blowout enters in pit shaft.Saturated sand around pit shaft pours in pit shaft, has emptied pit shaft surrounding formation, can change the local pressure state of pit shaft, threatens to the stability of shaft structure and integrality.
Current a technical barrier is remained for the burst preventing treatment of sand disaster of construction freezing method pit shaft water burst, when pit shaft is submerged, and sand is gushed at the multiple position of well bore wall, how successfully by the layer of sand consolidation around pit shaft, stop layer of sand to be burst in pit shaft gushing is the key of Treatment process.In the technology utilizing the solid sand of slip casting, by surface drilling in deep saturated sand during slip casting, adopt conventional grouting device and technique, often under larger hydraulic pressure, slurries can pass back into Grouting Pipe, and bring silt blocking Grouting Pipe into, cause secondary grouting not implement.In addition, due to slurries segregation detection, easily pile up thicker slurries at the bottom of hole or at the bottom of Grouting Pipe, effective interval of injected hole and Grouting Pipe is shortened, and slip casting effect is not good.
For this reason, designer of the present utility model, because above-mentioned defect, by concentrating on studies and designing, is comprehensively engaged in experience and the achievement of related industry for a long time for many years, research and design goes out one anti-suck sludge proof grouting device in deep saturated sand, to overcome above-mentioned defect.
Utility model content
The purpose of this utility model is being to provide one anti-suck sludge proof grouting device in deep saturated sand, it also effectively can prevent heavy slurry at the bottom of Grouting Pipe pipe, avoid blocking the slurry outlet in effective slip casting interval or Grouting Pipe, and slip casting terminates to carry out clean water to Grouting Pipe afterwards, injected hole and Grouting Pipe can be reused, realize the interval repeatedly slip casting of formation.
For solving the problem, the utility model discloses one anti-suck sludge proof grouting device in deep saturated sand, comprising slip casting outer tube and slip casting core pipe, it is characterized in that:
One end of described slip casting outer tube is closed, and other end opening is also socketed on described slip casting core pipe, and described slip casting outer tube is inserted in by a threaded sleeve in the middle part of described slip casting core pipe,
The periphery of described slip casting outer tube is dug and is organized slurry outlet more, two or four is furnished with at one group of slurry outlet of same radial direction, and many in the axial direction group slurry outlet equi-spaced apart or Unequal distance interval, slip casting outer tube is provided with multiple rubber sleeve, each rubber sleeve is covered in one group of slurry outlet respectively, and the lower end of each rubber sleeve and the tight colligation of slip casting outer tube or bonding, upper end relies on elastic abutment in slip casting outer tube.
Wherein: the other end of described slip casting core pipe is socketed with another threaded sleeve.
Wherein: described slip casting core pipe is steel pipe, and outer diameter is 20mm, and wall thickness is 2.5mm.
Wherein: described slip casting outer tube is steel pipe, outer diameter is 50mm, and wall thickness is 3mm.
Wherein: the bottom of described slip casting outer tube is set to tip.
Wherein: each group of slurry outlet spacing in the axial direction on described slip casting outer tube is 500mm, each group slurry outlet equi-spaced apart is set to 4.
Wherein: the slurry outlet aperture on described slip casting outer tube is 8mm.
Known by said structure, of the present utility model in deep saturated sand anti-suck sludge proof grouting device there is following effect:
1, effectively can prevent the problem of grouting serous fluid suck-back in deep saturated sand, can realize single borehole repeatedly slip casting.
2, utilize slip casting core pipe to be socketed the mode of slip casting outer tube, slurries are formed without dead angle flowing in grouting device, effectively avoid the segregation precipitation of slurries in Grouting Pipe.
3, easy to operate, slip casting efficiency is high, and slip casting process control, good to layer of sand solidification effect.
Detailed content of the present utility model obtains by explanation described later and institute's accompanying drawing.
Accompanying drawing explanation
Fig. 1 shows the structural representation of anti-suck sludge proof grouting device in deep saturated sand of the present utility model.
Reference numeral:
11, slip casting outer tube; 12, slip casting core pipe; 13, threaded sleeve; 14, slurry outlet; 15, rubber sleeve.
Detailed description of the invention
See Fig. 1, show of the present utility model in deep saturated sand anti-suck sludge proof grouting device.
Described grouting device comprises slip casting outer tube 11 and slip casting core pipe 12, one end of described slip casting outer tube 11 is closed, other end opening is also socketed on described slip casting core pipe 12, wherein, described slip casting outer tube 11 is inserted in by a threaded sleeve 13 in the middle part of described slip casting core pipe 12, and optionally, the other end of described slip casting core pipe 12 can be socketed with another threaded sleeve 13, be socketed successively to provide many slip casting core pipes 12, to adapt to different length and scope.
Wherein, the periphery of described slip casting outer tube 11 is dug many group slurry outlets 14, two or four can be furnished with at one group of slurry outlet 4 of same radial direction, and many in the axial direction group slurry outlets 14 can equi-spaced apart or Unequal distance interval, slip casting outer tube 11 is provided with multiple rubber sleeve 15, each rubber sleeve 15 is covered in one group of slurry outlet 14 respectively, and the lower end of each rubber sleeve 15 and slip casting outer tube 11 carry out colligation closely or bonding, upper end relies on elastic abutment in slip casting outer tube, and can according to the intensity of the concrete pressure determination rubber sleeve 15 of slip casting.Device thus, slurries can be realized and enter slip casting outer tube 11 by the bottom of slip casting core pipe 12, then by the slurry outlet 14 on slip casting outer tube 11 periphery, through rubber sleeve 15 upper end, outflow enters slip casting stratum, as can be seen here, in order to prevent slurries at the bottom precipitation of slip casting outer tube, so slip casting core pipe to be inserted the bottom of slip casting outer tube, and slip casting core pipe does not arrange slurry outlet, allow all slurries return out from the bottom of slip casting core pipe, the slurries in slip casting outer tube can be forced all to be in flow regime.
Wherein, described slip casting core pipe is steel pipe, and outer diameter is 20mm, and wall thickness is 2.5mm, and described slip casting outer tube is steel pipe, and outer diameter is 50mm, and wall thickness is 3mm.
Wherein, the distance of described slip casting core pipe bottom and slip casting outer tube bottom is 20mm, and the bottom of slip casting outer tube is set to tip.
Wherein, the slurry outlet spacing in the longitudinal direction on described slip casting outer tube is generally 500mm, and the slurry outlet in radial direction is traditionally arranged to be 4, and the slurry outlet in radial direction is evenly arranged.
Wherein, described slip casting outer tube determines effective slip casting segment length, and effective slip casting segment length determines according to the thickness of slip casting formation at target locations.
Wherein, the slurry outlet aperture on described slip casting outer tube is 8mm.
Wherein, described sleeve shell material is mixed by cement, flyash, swell soil and water.
Wherein, the grouting pressure of described slip casing by pressure is specifically determined according to the physico-mechanical properties of slip casting formation at target locations.
Known by said structure, the utility model tool has the following advantages:
The first, anti-suck.Slurry outlet on slip casting outer tube wall utilizes rubber sleeve to seal, achieve the one-way flow feature of slurries, namely slurries only can enter slip casting formation at target locations by slurry outlet and with the gap of rubber sleeve in grouting device, and can not reverse flow, effectively prevent suck-back backflow.
The second, anti-precipitation.Slip casting core pipe is inserted slip casting outer tube, slurries is upwards returned by the end of slip casting outer tube, flows out grouting device by slurry outlet.The method makes slurries be in flow disturbance state all the time in grouting device, can not cause the phenomenon such as flow velocity reduction, slurries segregation, solid particle precipitation at grouting device.
3rd, efficiency is high.According to the length of slip casting formation at target locations and the length of characteristics design grouting device and slurry outlet quantity, single slip casting can the section of note longer, and can the laggard slip casting of in the ranks having a rest of hole flushing.
4th, effective.When layer carries out slip casting significantly to deep and thick sand or hydraulic pressure, utilize the sealing function of rubber sleeve, the pressurize after elevated pressures slip casting and slip casting can be realized, be beneficial to slurries and deposit in space and solidify.
5th, benefit is excellent.Utilize the method to carry out slip casting, single hole slip casting success rate is higher, and grouting horizon is controlled, escapable cost.
It is evident that, above description and record be only citing instead of in order to limit disclosure of the present utility model, application or use.Although described in an embodiment and be described in the drawings embodiment, but the utility model do not limit by accompanying drawing example and describe in an embodiment as the optimal mode thought at present to implement the specific examples of instruction of the present utility model, scope of the present utility model will comprise any embodiment of manual and the appended claim fallen into above.

Claims (7)

1. an anti-suck sludge proof grouting device in deep saturated sand, comprises slip casting outer tube and slip casting core pipe, it is characterized in that:
One end of described slip casting outer tube is closed, and other end opening is also socketed on described slip casting core pipe, and described slip casting outer tube is inserted in by a threaded sleeve in the middle part of described slip casting core pipe,
The periphery of described slip casting outer tube is dug and is organized slurry outlet more, two or four is furnished with at one group of slurry outlet of same radial direction, and many in the axial direction group slurry outlet equi-spaced apart or Unequal distance interval, slip casting outer tube is provided with multiple rubber sleeve, each rubber sleeve is covered in one group of slurry outlet respectively, and the lower end of each rubber sleeve and the tight colligation of slip casting outer tube or bonding, upper end relies on elastic abutment in slip casting outer tube.
2. grouting device as claimed in claim 1, is characterized in that: the other end of described slip casting core pipe is socketed with another threaded sleeve.
3. grouting device as claimed in claim 1, is characterized in that: described slip casting core pipe is steel pipe, and outer diameter is 20mm, and wall thickness is 2.5mm.
4. grouting device as claimed in claim 1, it is characterized in that: described slip casting outer tube is steel pipe, outer diameter is 50mm, and wall thickness is 3mm.
5. grouting device as claimed in claim 1, is characterized in that: the bottom of described slip casting outer tube is set to tip.
6. grouting device as claimed in claim 1, is characterized in that: each group of slurry outlet spacing in the axial direction on described slip casting outer tube is 500mm, and each group slurry outlet equi-spaced apart is set to 4.
7. grouting device as claimed in claim 1, is characterized in that: the slurry outlet aperture on described slip casting outer tube is 8mm.
CN201520881330.6U 2015-11-06 2015-11-06 Prevent suck -back and prevent slip casting device that deposits in deep full water sand bed Active CN205077490U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520881330.6U CN205077490U (en) 2015-11-06 2015-11-06 Prevent suck -back and prevent slip casting device that deposits in deep full water sand bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520881330.6U CN205077490U (en) 2015-11-06 2015-11-06 Prevent suck -back and prevent slip casting device that deposits in deep full water sand bed

Publications (1)

Publication Number Publication Date
CN205077490U true CN205077490U (en) 2016-03-09

Family

ID=55429905

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520881330.6U Active CN205077490U (en) 2015-11-06 2015-11-06 Prevent suck -back and prevent slip casting device that deposits in deep full water sand bed

Country Status (1)

Country Link
CN (1) CN205077490U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105274994A (en) * 2015-11-06 2016-01-27 中煤科工集团西安研究院有限公司 Suck-back prevention and deposition prevention grouting process and device for deep waterlogged sand layer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105274994A (en) * 2015-11-06 2016-01-27 中煤科工集团西安研究院有限公司 Suck-back prevention and deposition prevention grouting process and device for deep waterlogged sand layer
CN105274994B (en) * 2015-11-06 2017-06-09 中煤科工集团西安研究院有限公司 Anti-suck sludge proof grouting process and grouting device in deep saturated sand

Similar Documents

Publication Publication Date Title
CN104453913B (en) A kind of Shaft Stopes front pre-grouting method
CN100480475C (en) Controllable one-well lamina precipitation construction method
CN105927231B (en) Inclined shaft passes through rich water densification drifting sand layer circulation-induced curtain-grouting method
CN100510274C (en) Construction method of enclosing level rotary-jet pile hole-mouth using double-liquid slip jection method
CN101761345A (en) Reinforcement device for tunnel top soil and construction method thereof
CN105821830A (en) Permeation increase siphon drainage system for low-permeability soil slope
CN103806479A (en) Pile foundation combined grouting reinforcement construction method combining waterproof curtain
CN102168419B (en) Method for compounding anchor rod by geotextile reinforcing
CN105350953A (en) Measuring method for coal seam gas pressure in complicated geological condition
CN107761753A (en) A kind of foundation ditch water burst rapid rescue slip casting method for blocking
CN108193606A (en) A kind of means of defence of local scour near pier
CN105178285A (en) Method for widening grouting reinforcement and seepage and blockage prevention range of rock and soil
CN207619996U (en) Precipitation well construction
CN107513995A (en) A kind of bridge struction pile post grouting construction method
CN106638606B (en) A kind of quick grouting method of deep covering layer
CN105274994B (en) Anti-suck sludge proof grouting process and grouting device in deep saturated sand
CN110318410A (en) A kind of deep basal pit chance artesian water is prominent to gush decompression drought stress construction method
CN205077490U (en) Prevent suck -back and prevent slip casting device that deposits in deep full water sand bed
CN105134069B (en) One kind is related to gas vertical and passes through the anti-well method construction technology in strong rich water rock stratum
JP4074313B2 (en) Structure of steel sheet pile for water flow and water retaining wall, and its construction method.
CN203924137U (en) A kind of diaphragm wall serious leakage plugging structure
JP4358207B2 (en) Ground reinforcement method for excavated bottom
CN210266039U (en) Active ejection type pile end rear grouting valve
CN201649099U (en) Grout injector metal casting
CN203702071U (en) Water inrush preventing drill ejecting device for water exploration and grouting construction of vertical shaft

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20210716

Address after: 300000 building 709, Minghai center, CCCC C Valley, pilot Free Trade Zone, Binhai New Area, Tianjin (Dongjiang Bonded Port Area)

Patentee after: China Coal Science and Technology Co.,Ltd.

Address before: No.82, Jinye 1st Road, hi tech Zone, Xi'an City, Shaanxi Province

Patentee before: XI'AN RESEARCH INSTITUTE OF CHINA COAL TECHNOLOGY & ENGINEERING Group Corp.

TR01 Transfer of patent right