CN203905895U - Multifunctional rotary jet grouting device for core drilling - Google Patents
Multifunctional rotary jet grouting device for core drilling Download PDFInfo
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- CN203905895U CN203905895U CN201420336761.XU CN201420336761U CN203905895U CN 203905895 U CN203905895 U CN 203905895U CN 201420336761 U CN201420336761 U CN 201420336761U CN 203905895 U CN203905895 U CN 203905895U
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- spray apparatus
- multifunctional rotary
- core drilling
- injection device
- drag bit
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Abstract
The utility model relates to a multifunctional rotary jet grouting device for core drilling. The multifunctional rotary jet grouting device comprises a jet bearing device (7) and a drag bit (9), wherein the drag bit (9) is connected to the lower part of the jet bearing device (7); a steel ball (3), a spring (5), a bearing (6) and a pressure regulating screw rod (8) are sequentially arranged in an axial hole (74) in the lower part of the jet bearing device; a radial jet opening (73) is formed in the middle of the jet bearing device and is communicated with the axial hole in the lower part of the jet bearing device; a jet nozzle (4) is arranged in the radial jet opening (73). According to the multifunctional rotary jet grouting device disclosed by the utility model, the problems about broken strata, soft strata, sloughing strata, collapse strata and other strata in the core drilling construction, which cannot be solved by the conventional wall retaining mode, or about the grouting of various drilling statuses can be solved.
Description
Technical field
The invention relates to small-bore core drilling field, and particularly a kind of core drilling multifunctional rotary preventing slurry injection device is applicable to fragmentation, weakness, falls piece, the slip casting of caving ground, also can be used for slip casting in the drilling well of the heavy caliber such as well, geothermal well.
Background technology
In recent years along with resources requirement strengthens, small-bore core drilling constantly to deep, bad ground development.Deep drilling is also more and more higher to the requirement of drilling technique, but, no matter be conventional core drilling method or novel Air Reverse Circulation continuous sampling drilling method, broken, weak, fall piece, easily cave in etc. in the construction of bad ground and still have great difficulty.Although mud, static pressure grouting and sleeve pipe retaining wall can play a role at present, construct in the stratum such as stratum smashed to pieces, soft stratum, drifting sand layer, mud, static pressure grouting are often difficult to play good effect.Due to the restriction of bore, some hole section can not be used sleeve pipe retaining wall.
Easily cave at hole wall, drifting sand layer, soft stratum or containing more fault gouge in the situation that, conventional slip casting can only be filled in boring, slurries cannot be penetrated in hole wall stratum, thereby cannot play consolidation.Secondly in the boring that has underground water, when grout injection, must accurately calculate for the water yield, for the water yield many or lacked and all affected pouring quality.
Therefore, provide a kind of simple to operate, success rate is high, adapt to the tool for grouting in loose of situation in multiple hole, is that the technical problem solving is badly in need of in this area.
Summary of the invention
The present invention is directed to an above-mentioned difficult problem, provide a kind of for broken, weak, to fall piece, cavey formation tool for grouting in loose.Specifically provide following technical scheme: a kind of core drilling multifunctional rotary preventing slurry injection device, comprise and hold spray apparatus and drag bit, drag bit is connected to and holds spray apparatus bottom, it is characterized in that: hold and in the axial hole of spray apparatus bottom, be sequentially provided with steel ball, spring, bearing and pressure regulation screw mandrel, hold spray apparatus middle part radial jet nozzle is set, described spout communicates with holding spray apparatus bottom axial hole, in described spout, nozzle is installed.
Further, hold spray apparatus and be arranged on the lower end of drilling rod, rubber plunger be placed on hold the drilling rod that spray apparatus upper cavity is communicated with in slurries top.Plunger can play auxiliary indicative function.Rubber plunger can be descending with slurries under the pressure of upper water, until block the axial aperture of holding spray apparatus middle part, causes top hydraulic pressure to become large, allows operating personnel know that slurries have sprayed.
Further, pressure regulation screw mandrel (8) is a cylinder, and described cylindrical top (81) is provided with step, for spring bearing (6); Circumferentially be shaped with screw thread at described cylindrical middle part (82), for hold spray apparatus (7) bottom axial hole (74) and be threaded; Be provided with square spanner in described cylindrical bottom (83).
Drag bit top is cylindric body, and drag bit bottom is three wings or four wing alloy blades, and body is fixedly connected with blade or is one-body molded.
Further, carbide inserts on described blade wing plate.Carbide alloy is for creeping into harder stratum.
The core drilling multifunctional rotary preventing slurry injection device that the invention provides, has following function or beneficial effect.
1, seal from lower to upper and hold spray apparatus formation one way valve by pressure regulation screw mandrel, bearing, spring, steel ball, by the decrement of pressure regulation screw mandrel adjustable springs, control the pressure of opening valve.
If have dilapidation or slip casting in soft stratum in 2 holes, drag bit plays the effect of cleaning bottom of hole, ensures that grout pouring is to required hole section.
3, plunger is placed to reperfusion serosity top, and when perfusion, water pumps water promotion plunger and slurries are descending, and after plunger goes downwards to bottom, spray apparatus is held in shutoff, and water pump is suppressed pump and reported to the police, and slurries force feed is complete, and the water simultaneously sealing in Grouting Pipe does not enter in hole.
4, select different nozzles, supporting different injection pressure, to meet the needs of various stratum slip casting.
brief description of the drawings
Fig. 1 is the general structure schematic diagram of the invention;
Fig. 2 is the structural representation that holds spray apparatus;
Fig. 3 is the structural representation of drag bit;
Fig. 4 is the structural representation of pressure regulation screw mandrel;
Fig. 5 is the structural representation of nozzle.
In figure:
1-drilling rod 2-plunger 3-steel ball 4-nozzle 41-single-hole nozzle 42-tetra-hole nozzle 5-spring 6-bearing 7-hold 83-bottom, spray apparatus 71-body 72-upper cavity 73-spout 74-bottom axial hole 75-axial aperture 8-pressure regulation screw mandrel 81-top 82-middle part 9-drag bit 91-cylindrical body 92-drill bit 93-carbide alloy.
Detailed description of the invention
With reference to accompanying drawing, the invention core drilling multifunctional rotary preventing slurry injection device is described further.
As shown in Figure 1, core drilling multifunctional rotary preventing slurry injection device comprises plunger 2, steel ball 3, nozzle 4, spring 5, bearing 6, hold spray apparatus 7, pressure regulation screw mandrel 8 and drag bit 9, hold spray apparatus 7 and have a cylindric body 71, on its upper cavity 72 walls, be provided with screw thread, can with being threaded of drilling rod 1 bottom, hold spray apparatus 7 middle parts and be radially provided with spout 73, be used for installing nozzle 4, hold in spray apparatus 7 bottom axial holes 74 and be provided with screw thread, pressure regulation screw mandrel 8 is threaded with it, bearing 6 is arranged on pressure regulation screw mandrel 8 one end, for support spring 5, spring 5 is pressed on steel ball 3 in the axial aperture 75 of holding spray apparatus 7, form one section of flap valve, in the time that the hydraulic pressure on axial aperture 75 tops is greater than spring 5 to the pressure of steel ball 3, spring is compressed, one way stop peturn valve is opened, the liquid on axial aperture top will be by this axial aperture 75, enter nozzle 4, then outwards sprayed by nozzle 4, realize the whitewashing function of this core drilling multifunctional rotary preventing slurry injection device.
Pressure regulation screw mandrel 8 is for adjusting the pressure of spring 5 to steel ball 3, thereby the function of one way valve pressure is adjusted in realization.Pressure regulation screw mandrel 8 is a cylinder, and top 81 is designed with step, for spring bearing 6; Middle part 82 is circumferentially shaped with screw thread, for hold spray apparatus 7 bottom axial holes 74 and be threaded; Mouth is pulled for square in bottom 83, can be with cubic spanner unloading or regulating spring pressure.In addition, cylindrical bottom 83 also can be designed to triangle or hexagon, or interior hexagon is pulled mouth.
Drag bit 9 by screw thread with hold spray apparatus 7 and be connected, being used to whitewashing to create working space.Drag bit 9 tops are cylindric body 91, and drag bit 9 bottoms are blade 92, and body 91 is fixedly connected with blade 92, and the two can be made of one.Blade 92 is three wings or four wings, carbide inserts 93 on blade wing plate.
Plunger 2 is the accessory of this core drilling multifunctional rotary preventing slurry injection device, all pour into after grout pipe at slurries, plunger 2 is dropped into grout pipe, after slurries all spray, plunger 2 can cloggingly hold the axial aperture of spray apparatus 7, thereby make work water pressure increase, allow operating personnel be easy to judge that slurries spray complete.
Board slip casting is generally made grout pipe with borehole wire-line coring drilling rod, when slip casting, the invention core drilling multifunctional rotary preventing slurry injection device is connected to drilling rod 1 below.
Below provide that the invention core drilling multifunctional rotary preventing slurry injection device adopts for different strata condition several usings method.
specific embodiment one
dry hole churning quick-drying slurries retaining wall
Affect RC boring, the core hole of creeping into for falling piece without water level, hole wall in hole, can adopt the invention product to carry out churning quick-drying slurries retaining wall, concrete grammar step is:
the first step, select 4 hole nozzles 4, steel ball 3, spring 5, bearing 6, pressure regulation screw mandrel 8 are put in order to the bottom axial hole 74 that holds spray apparatus 7, first do pressure test on ground, mix up the pressure of spring 5 by pressure regulation screw mandrel 8, make steel ball 3 there is the operating pressure of applicable dry hole churning quick-drying slurries retaining wall.
Be pressure P=H/100+1～2(MPa)
H in formula-perfusion section bottom is to the length of water swivel, unit: rice.
second step,to hold spray apparatus 7 is connected to below drilling rod 1.
the 3rd step,drag bit 9 is connected to and is held below spray apparatus 7.
the 4th step,by arriving perfusion section bottom under drilling tool, calculate slurries consumption, prepare quick-drying slurries, inject in drilling rod 1.In drilling rod 1 endoporus, put into plunger 2, with water pump to drilling rod 1 inner water-supply.Suddenly falling after water-aspirator pressure raises, illustrates that pressure regulation screw mandrel 8, bearing 6, spring 5, steel ball 3 seal that to hold the one way valve that spray apparatus 7 forms opened from lower to upper.On one side rotary drilling bits is carried at a slow speed and is carried out churning operation on one side.Slurries are ejected in the crack of broken hole wall, carry out cementing to fractured rock.
the 5th step,if perfusion section is longer, can termination of pumping fall bar or unload drilling rod after continue churning.In the time of the unexpected fast rise of water-aspirator pressure, illustrate that slurries all extrude, plunger 2 has stopped up the axial aperture 75 of holding spray apparatus 7 to holding spray apparatus 7 positions, and termination of pumping immediately, opens back-water valve (BWV), carries brill, waits to coagulate.
specific embodiment two
soft stratum, drifting sand layer, boring pressure rotary jet grouting caves in
In drilling operation, usually run into the situation of soft stratum, drifting sand layer, hole wall collapse, cannot make slurry infiltration in hole wall by the method for static pressure grouting, after open-work, restore to the original state again.By the method for rotary jet grouting, together with the fractured rock within the scope of certain diameter in hole, quicksand, dilapidation etc. can being arrived with slurry agitation, solidify the column solidifying body of rear formation diameter much larger than boring, concrete grammar step is:
the first step,select single-hole nozzle, equally assemble churning drilling tool with embodiment mono-, do pressure test on ground, mix up spring 5 pressure by pressure regulation screw mandrel 8;
Pressure P=H/100+1～2(MPa)
In formula in H-hole static level to the length of water swivel, unit: rice.
second step,lower drilling tool, cleaning bottom of hole on earth.Calculate slurries consumption, prepare slurries, inject drilling rod 1.Put into plunger 2, send water.Water-aspirator pressure falls after rise suddenly after raising, and illustrates that pressure regulation screw mandrel 8, bearing 6, spring 5, steel ball 3 seal that to hold the one way valve that spray apparatus 7 forms opened from lower to upper.On one side rotary drilling bits is carried at a slow speed and is carried out churning operation on one side.High-speed jet radial cuts, stir boring in and boring outer certain limit soft rock, quicksand, dilapidation, they are mixed with slurries, solidify rear formation diameter much larger than hole column solidifying body.
the 3rd step,if perfusion section is longer, can termination of pumping fall bar or unload drilling rod after continue churning.In the time of the unexpected fast rise of water-aspirator pressure, illustrate that slurries all extrude, plunger 2 has stopped up the axial aperture 75 of holding spray apparatus 7 to holding spray apparatus 7 positions, and termination of pumping immediately, opens back-water valve (BWV), carries brill, waits to coagulate.
specific embodiment three
static pressure is slip casting under water
The method of conventional static pressure slip casting is under water carried out according to pressure balanced principle, need to slurries be delivered to suitable position for water, carries the rear water that replaces of brill and enters in hole.Therefore, sent many or lacked and all can dilute slurries for water, having changed the position of slurries, effect and the success rate of impact perfusion.
Utilize the core drilling multifunctional rotary preventing slurry injection device of the invention to carry out static pressure slip casting under water, do not need to calculate for the water yield, the water of mud jacking liquid does not enter in hole, can not dilute slurries, also can not change the position of slurries, greatly improve quality and the success rate of perfusion, simplify operation sequence simultaneously.
Grouting method is with specific embodiment two.For improving rate of flooding, detachable lost nozzle 4.In filling process, rig is rotatable, but does not carry.
Claims (7)
1. a core drilling multifunctional rotary preventing slurry injection device, comprise and hold spray apparatus (7) and drag bit (9), drag bit (9) is connected to and holds spray apparatus (7) bottom, it is characterized in that: described in hold and in spray apparatus (7) bottom axial hole (74), be sequentially provided with steel ball (3), spring (5), bearing (6) and pressure regulation screw mandrel (8), described spray apparatus (7) middle part of holding arranges radial jet nozzle (73), described spout (73) with hold spray apparatus (7) bottom axial hole (74) and communicate, nozzle (4) is installed in described spout (73).
2. core drilling multifunctional rotary preventing slurry injection device as claimed in claim 1, it is characterized in that: described in hold spray apparatus (7) and be arranged on the lower end of drilling rod (1), rubber plunger (2) is placed on and the interior slurries of drilling rod (1) top of holding spray apparatus (7) upper cavity (72) and being communicated with.
3. core drilling multifunctional rotary preventing slurry injection device as claimed in claim 1 or 2, is characterized in that: pressure regulation screw mandrel (8) is a cylinder, and described cylinder top (81) is provided with step, for spring bearing (6); Circumferentially be shaped with screw thread at described cylindrical middle part (82), for hold spray apparatus (7) bottom axial hole (74) and be threaded; Be provided with square spanner in described cylindrical bottom (83).
4. core drilling multifunctional rotary preventing slurry injection device as claimed in claim 1 or 2, it is characterized in that: described drag bit (9) top is cylindric body (91), drag bit (9) bottom is three wings or four wing alloy blades (92), and body (91) is fixedly connected with blade (92) or is one-body molded.
5. core drilling multifunctional rotary preventing slurry injection device as claimed in claim 3, it is characterized in that: described drag bit (9) top is cylindric body (91), drag bit (9) bottom is three wings or four wing alloy blades (92), and body (91) is fixedly connected with blade (92) or is one-body molded.
6. core drilling multifunctional rotary preventing slurry injection device as claimed in claim 4, is characterized in that: carbide inserts (93) on described blade (92) wing plate.
7. core drilling multifunctional rotary preventing slurry injection device as claimed in claim 5, is characterized in that: carbide inserts (93) on described blade (92) wing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336761.XU CN203905895U (en) | 2014-06-24 | 2014-06-24 | Multifunctional rotary jet grouting device for core drilling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420336761.XU CN203905895U (en) | 2014-06-24 | 2014-06-24 | Multifunctional rotary jet grouting device for core drilling |
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| CN203905895U true CN203905895U (en) | 2014-10-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545215A (en) * | 2016-01-11 | 2016-05-04 | 安徽理工大学 | Drill bit for broken stratum drilling |
| CN108505968A (en) * | 2018-05-10 | 2018-09-07 | 中国地质大学（武汉） | A kind of site-directed quantitative slurry casting machine and system |
| CN108868788A (en) * | 2018-06-26 | 2018-11-23 | 李先登 | A kind of method for digging of Super Long Tunnel |
| CN110258543A (en) * | 2019-06-20 | 2019-09-20 | 浙江省送变电工程有限公司 | It is a kind of can automatic open close cement mixing pile whitewash aperture apparatus |
| CN113137209A (en) * | 2021-04-27 | 2021-07-20 | 中国地质科学院勘探技术研究所 | Drilling and injection integrated marine natural gas hydrate reservoir transformation appliance and method |
-
2014
- 2014-06-24 CN CN201420336761.XU patent/CN203905895U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545215A (en) * | 2016-01-11 | 2016-05-04 | 安徽理工大学 | Drill bit for broken stratum drilling |
| CN108505968A (en) * | 2018-05-10 | 2018-09-07 | 中国地质大学（武汉） | A kind of site-directed quantitative slurry casting machine and system |
| CN108868788A (en) * | 2018-06-26 | 2018-11-23 | 李先登 | A kind of method for digging of Super Long Tunnel |
| CN110258543A (en) * | 2019-06-20 | 2019-09-20 | 浙江省送变电工程有限公司 | It is a kind of can automatic open close cement mixing pile whitewash aperture apparatus |
| CN110258543B (en) * | 2019-06-20 | 2024-04-19 | 浙江省送变电工程有限公司 | Cement mixing pile guniting hole device capable of being opened and closed automatically |
| CN113137209A (en) * | 2021-04-27 | 2021-07-20 | 中国地质科学院勘探技术研究所 | Drilling and injection integrated marine natural gas hydrate reservoir transformation appliance and method |
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