CN102839650B - Integral drilling and filling top-bottom high-pressure impact extrusion grouting system - Google Patents
Integral drilling and filling top-bottom high-pressure impact extrusion grouting system Download PDFInfo
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- CN102839650B CN102839650B CN201210348149.XA CN201210348149A CN102839650B CN 102839650 B CN102839650 B CN 102839650B CN 201210348149 A CN201210348149 A CN 201210348149A CN 102839650 B CN102839650 B CN 102839650B
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Abstract
The invention discloses an integral drilling and filling top-bottom high-pressure impact extrusion grouting system, which is mainly applicable to the foundation reinforcement and anti-seepage grouting treatment on poor geologic bodies with loose and weak structures and the like. The grouting system comprises a drilling machine, a drilling rod and a high-pressure impact extrusion grouting head, wherein the drilling rod is connected onto a vertical shaft of the drilling machine, the high-pressure impact extrusion grouting head is connected onto the drilling rod and is used for hole drilling and grouting from top to bottom, a water faucet arranged at the upper part of the drilling rod connected onto the vertical shaft of the drilling machine is connected with a grouting pump through a drilling and filling slurry inlet pipe, the hole opening position of a drilling hole is provided with a hole opening return slurry collecting and settling device, and the return slurry after settlement treatment in the hole opening return slurry collecting and settling device is conveyed into a grouting slurry storage barrel through a drilling and filling slurry returning pipe via a mud pump for cyclic use. The grouting system has the advantages that the grouting full holes are continuous and uniform, the process operation is simple and convenient, and economy and environment protection are realized. The ideal grouting quality effect can be reached by adopting different hole array pitch hole distribution modes according to different engineering requirements.
Description
Technical field
The present invention relates to ground base enforcement and antiseepage and process grouting field, be specially a kind of brill fill with one, from top to bottom, high pressure impact extrusion grouting system, be to be mainly applicable to the poorly plastid such as loosely organized, weak to carry out underpin and antiseepage grouting treatment, underpin and antiseepage grouting treatment are carried out to the poorly plastid such as loose, weak in the fields such as water power, municipal administration, railway and highway bridge, harbour, airport that can be widely used in.
Background technology
China is distributed with huge thick-layer calcirudite (K in the Cretaceous red bed bottom, plot, river bend, holder saliva power station of building
1-1), be mostly complete～severely-weathered shape, fragment, gravel composite construction, soft or hard density is uneven, and permeability rate 10-50Lu is medium permeable, belongs to IV～V class rock mass.Chinese patent application CN102535472A discloses the method for a kind of hole pipe packing, high pressure impact extrusion grouting, and this grouting method is divided into two steps, first adopts drill hole of drilling machine, then by employing grouting method from bottom to top at the bottom of hole, is in the milk; When boring, adopt dense mud to carry out deslagging and borehole wall-protection.
Holder plot, river bend, saliva power station grouting research shows, be subject to Cretaceous red bed particularly bottom weathered pebble strata structure proterties restrict, adopt the conventional following problem of grouting system ubiquity:
1, pore-forming creeps into very easily (collapsing) and resolves into grit, and borehole wall is very unstable;
2, the local easily generation of aperture closure grouting splitting has been difficult to press;
3, grouting is prone to " level folder cake " invalid perfusion outstanding problem;
4, conventional curtain cloth pore structure is difficult to build qualified curtain.
For solving above-mentioned series of problems, taken the lead early stage by owner, design, universities and colleges, construction are combined to participate in and have been carried out specially < < high-pressure pulsating splitting compaction grouting and in Tuo Kou river bend plot application study > > work, and release " slurry sealing,, high-pressure pulsating " of the present invention novel grouting system from bottom to top.
Summary of the invention
Plot, river bend, the holder saliva power station Cretaceous red bed antiseepage grouting formation characteristics of building for China, the present invention aims to provide a kind of brill and fills with one, from top to bottom, impacting with high pressure grouting system, this grouting system will be holed, grouting, retaining wall is integrated, boring while filling with adopts grouting liquid as flushing liquor, one-way joint is installed on drill bit top and screwed union forms helixseal high pressure impact extrusion grouting head, by a helixseal high pressure impact extrusion grouting helixseal effect and single-cylinder single-acting reciprocating type plunger grout pump pulse effects, realize full hole section and bore filling one, high pressure impact extrusion grouting continuously from top to bottom, grouting liquid is taken into account deslagging and hole wall protection in hole simultaneously.
For achieving the above object, the technical solution used in the present invention is:
Brill fill with one, from top to bottom, a high pressure impact extrusion grouting system, be characterized in, comprise rig, by drilling rod, be connected to the high pressure impact extrusion grouting head with grouting for boring from top to bottom on rig vertical shaft; The water tap on described rig vertical shaft drilling rod top is filled with inlet pipe by brill and is connected with a grout pump; In the position, aperture of boring, be provided with aperture overfall collection, sedimentation device, the overfall in this aperture overfall collection, sedimentation device after precipitation process is filled with return pipe by slush pump by brill and is sent into grouting slurry storing tank.
Overfall is sent into after grouting slurry storing tank, to overfall stirs with size performance adjustment after recycling use.
Be below the technical scheme of further improvement of the present invention:
In order to improve the utilization rate of grouting liquid, at brill grout mouth, aperture overfall collection, settler are installed, described grouting slurry storing tank is connected with described grout pump, after precipitation process overfall adopt slush pump to turn to be evacuated to grouting slurry storing tank stir with size performance adjustment after recycle.
According to embodiments of the invention, the structure of described helixseal high pressure impact extrusion grouting head is, comprises screwed union, is connected to the one-way joint of screwed union lower end, is connected to the full section drill bit of one-way joint bottom; Described one-way joint is a kind of unidirectional bottom in and top out structure, is provided with the unidirectional valve ball that the unidirectional impact extrusion of automatic control high pressure impact extrusion slurry pours into stratum in this one-way joint; Described screwed union surface has helicla flute.
Certainly, the present invention can also adopt another kind of form of structure, and the structure of described helixseal high pressure impact extrusion grouting head is, comprises screwed union, is connected to the one-way joint of screwed union upper end, is connected to the full section drill bit of screwed union bottom; Described one-way joint is a kind of unidirectional bottom in and top out structure, is provided with the unidirectional valve ball that the unidirectional impact extrusion of automatic control high pressure impact extrusion slurry pours into stratum in this one-way joint; Described screwed union surface has helicla flute.
According to stratum, send soft situation, the spiral external diameter of described screwed union is preferably than the large 2-8mm of the external diameter of described full section drill bit, to guarantee helixseal effect and to be in the milk pressure.
Above-mentioned helicla flute is preferably left-handed helicla flute, and when drilling rod rotates, helicla flute can play the effect that is similar to screw pump, strengthens grouting impact extrusion pressure.
Described screwed union preferably adopts 65Mn spring steel or 40Cr structural alloy steel, hard surfacing, HRC=45-55.
Described grout pump is preferably horizontal bar single-action reciprocating plunger grout pump.
A kind of brill disclosed by the invention fill with one, from top to bottom, high pressure impact extrusion grouting system, be the hole pipe packing that continues, system corresponding to a kind of brand-new grouting engineering method proposing again after the supporting system of high pressure impact extrusion grouting process.Native system is boring, grouting, retaining wall is integrated, during boring, adopt grouting liquid as flushing liquor, helixseal joint is installed on drill bit top and one-way joint forms helixseal high pressure impact extrusion grouting head, coordinate single-cylinder single-acting reciprocating type plunger grout pump pulse crowding effect to produce grouting impact extrusion pressure, realize boring and fill with one, high pressure impact extrusion grouting is carried out in stratum from top to bottom, grouting liquid is taken into account deslagging and borehole wall-protection simultaneously, bore to fill with and be combined with guard aperture, technological operation is managed packing compared with hole, high pressure impact extrusion grouting process is more easy, particularly in the situation for drilled grout hole pore-forming difficulty, effect is higher, quality is guaranteed.
Compared with prior art; the invention has the beneficial effects as follows: the present invention is integrated boring, grouting, retaining wall; boring while filling with adopts grouting liquid as flushing liquor; by a helixseal high pressure impact extrusion grouting helixseal effect and single-cylinder single-acting reciprocating type plunger grout pump pulse effects; realize full hole section and bore filling one; high pressure impact extrusion grouting continuously from top to bottom, grouting liquid is taken into account deslagging and hole wall protection in hole simultaneously.Technological operation is easy, economic environmental protection.Can adopt different hole array pitch patterns according to different engine requests, reach desirable grouting quality effect.Underpin and antiseepage grouting treatment are carried out to the poorly plastid such as loose, weak in the fields such as water power, municipal administration, railway and highway bridge, harbour, airport that can be widely used in.
Accompanying drawing explanation
Fig. 1 be brill of the present invention fill with one, from top to bottom, high pressure impact extrusion grouting process schematic diagram.
Fig. 2 is a kind of helixseal high pressure impact extrusion grouting header structure figure of the present invention.
In the drawings:
1-high pressure impact extrusion grouting head; 2-all-hydraulic drill; 3-grout pump; 4-slurrying slurry storing tank;
5-slush pump; 6-aperture overfall is collected, sedimentation device; 7-bores and fills with inlet pipe;
8-bores and fills with return pipe; 9-screwed union; 10-one-way joint; The full section drill bit of 11-.
The specific embodiment
A kind of brill fill with one, from top to bottom, high pressure impact extrusion grouting system, as shown in Figure 1, comprise rig 2, be connected to drilling rod lower end on rig 2 vertical shaft drilling rods for the helixseal high pressure impact extrusion grouting of boring from top to bottom and grouting 1, described helixseal high pressure impact extrusion grouting 1 drives revolution or up and down by vertical shaft drilling rod, and a helixseal high pressure impact extrusion grouting top is connected with several drilling rods.Described rig 2 is filled with inlet pipe 7 by brill and is connected with a grout pump 3, and this grout pump 3 is preferably horizontal bar single-action reciprocating plunger grout pump; In the position, aperture of boring, be provided with aperture overfall collection, sedimentation device 6, the overfall after this aperture overfall collection, the interior precipitation process of sedimentation device 6 is filled with return pipe 8 by slush pump 5 by brill and is sent into grouting slurry storing tank 4; Described grouting slurry storing tank 4 is connected with described grout pump 3.
Below with bore to fill with one, from top to bottom, the high pressure impact extrusion grouting system method of being in the milk is further described the course of work of the present invention, concrete steps are:
(1), according to formation condition and engineering design requirement thereof, by field trial, determine and bore grout, row's spacing.
(2) bore to fill with one, from top to bottom, high pressure impact extrusion grouting process equipment and layout be shown in accompanying drawing 2: bore fill with one, from top to bottom, high pressure impact extrusion grouting process schematic diagram.
(3) boring filling construction should adopt full-hydraulic power head drill also can adopt standard machinery transmission geological drilling rig; Grout pump should adopt single-cylinder single-acting reciprocating type plunger grout pump, and grouting pressure should be greater than 5.0MPa, and single impact extrusion amount should be greater than 1.0L, and single-acting pulse frequency 30 times/min-100 time/min is advisable.
(4) aperture arranges and bore to fill with overfall and collect and drilling cuttings precipitation treatment device, and configuration overfall passes on slush pump, and the overfall returning out as aperture turns and is evacuated to grouting slurry storing tank and recycles after precipitation process;
(5) adopt Φ 50mm or Φ 54mm general geology drilling rod as drilling rod, drilling rod internal diameter should be not less than 20mm, connects helixseal high pressure impact extrusion grouting head below drilling rod.As shown in Figure 2, described helixseal high pressure impact extrusion grouting header structure is to comprise full section drill bit, one-way joint, screwed union.Described full section drill bit can adopt the full section drill bit of alloy, composite sheet or diamond that geotechnical boring is conventional; Described one-way joint, is a kind of unidirectional bottom in and top out structure, and the effect of built-in steel ball weight, automatically controls the unidirectional impact extrusion of high pressure impact extrusion slurry and pour into stratum, and in the hole that prevents from producing because of pulse negative pressure, drilling cuttings pours in down a chimney obstruction helixseal high pressure impact extrusion grouting head; Described helixseal joint, joint surface processes left-handed helicla flute, when the revolution of brill filling forward, can produce propulsive force to boring grouting liquid, forms a kind of screw pump and is pressed into effect, fills with impact extrusion pressure create conditions for realization brill.Described screwed union, spiral external diameter is generally than the large 2-8mm of outside diameter; Described screwed union, adopts 65Mn spring steel or 40Cr structural alloy steel, hard surfacing, HRC=45-55.
(6) bore to fill with one, from top to bottom, high pressure impact extrusion grouting encrypts principle according to a minute row, minute order, every round grouting can divide II order or the construction of III order.
(7) bore and fill with employing grouting liquid as drilling fluid, grouting liquid can adopt ordinary Portland cement or cement bentonite stable grout.Described stable slurry is that the solid mass ratio of water is 0.7:1-1:1, and the slurries bleed rate ordinary Portland cement or the cement-bentonite grout that are less than 5%;
(8) bore filling speed combination formation condition and be controlled at 10-20cm/min, more than grouting effective pressure is controlled at 3.0MPa.Meet loose or built on stilts stratum and bore and fill with while being difficult to press, adopt underflow or cream slurry to pour into, rise carry out again after pressing above-mentioned brill fill with one, from top to bottom, high pressure impact extrusion is in the milk.Meet special broken ground, can adopt and strengthen screwed union external diameter and lengthen screwed union length, guarantee the enforcement of impact extrusion high pressure.Described underflow is that the solid mass ratio of water is less than 0.5:1 ordinary Portland cement or cement-bentonite grout; Described cream slurry is the composite materials such as ordinary Portland cement slurries or cement-bentonite grout admixture plasticizing agent, accelerating admixture, a kind of paste sample slurry of formation.
(9) single hole bores and fills with and can once complete.After single hole grouting finishes, carry out filling sealing of hole grouting hole in, while meeting in hole artesian water, can adopt aperture screen slurry and close and starch processing.
(10) the existing country of grouting quality standard Main Basis and Technical specifications and engine request are by design construction.Detection method for quality Main Basis designing quality Standard General adopts original state sampling, packer permeability test, physical prospecting test, mechanical test etc.
The content that above-described embodiment is illustrated should be understood to these embodiment only for being illustrated more clearly in the present invention, and be not used in, limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
Claims (5)
1. bore to fill with one, from top to bottom, a high pressure impact extrusion grouting system, it is characterized in that, comprise rig (2), by drilling rod, be connected to the high pressure impact extrusion grouting head (1) with grouting for boring from top to bottom on rig (2) vertical shaft; The water tap on described rig (2) vertical shaft drilling rod top is filled with inlet pipe (7) by brill and is connected with a grout pump (3); In the position, aperture of boring, be provided with aperture overfall collection, sedimentation device (6), the overfall after this aperture overfall collection, the interior precipitation process of sedimentation device (6) is filled with return pipe (8) by slush pump (5) by brill and is sent into grouting slurry storing tank (4); Described high pressure impact extrusion grouting head (1) is helixseal high pressure impact extrusion grouting head; Described helixseal high pressure impact extrusion grouting head is one of following two kinds of form of structure:
1) comprise screwed union (9), be connected to the one-way joint (10) of screwed union (9) lower end, be connected to the full section drill bit (11) of one-way joint (10) bottom; Described one-way joint (10) is a kind of unidirectional bottom in and top out structure, is provided with the unidirectional valve ball that the unidirectional impact extrusion of automatic control high pressure impact extrusion slurry pours into stratum in this one-way joint (10); Described screwed union surface has helicla flute;
2), comprise screwed union (9), be connected to the one-way joint (10) of screwed union (9) upper end, be connected to the full section drill bit (11) of screwed union (9) bottom; Described one-way joint (10) is a kind of unidirectional bottom in and top out structure, is provided with the unidirectional valve ball that the unidirectional impact extrusion of automatic control high pressure impact extrusion slurry pours into stratum in this one-way joint (10); Described screwed union surface has helicla flute;
The spiral external diameter of described screwed union (9) is than the large 2-8mm of external diameter of described full section drill bit (11).
2. bore to fill with according to claim 1 one, from top to bottom, high pressure impact extrusion grouting system, it is characterized in that, described screwed union adopts 65Mn spring steel or 40Cr structural alloy steel, hard surfacing, HRC=45-55.
3. bore to fill with according to claim 1 one, from top to bottom, high pressure impact extrusion grouting system, it is characterized in that, described helicla flute is left-handed helicla flute.
4. bore to fill with according to claim 1 one, from top to bottom, high pressure impact extrusion grouting system, it is characterized in that, described grout pump (3) is horizontal bar single-action reciprocating plunger grout pump.
5. bore to fill with according to claim 1 one, from top to bottom, high pressure impact extrusion grouting system, it is characterized in that, described grouting slurry storing tank (4) is connected with described grout pump (3).
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| CN201210348149.XA CN102839650B (en) | 2012-09-19 | 2012-09-19 | Integral drilling and filling top-bottom high-pressure impact extrusion grouting system |
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| CN201210348149.XA CN102839650B (en) | 2012-09-19 | 2012-09-19 | Integral drilling and filling top-bottom high-pressure impact extrusion grouting system |
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| CN102839650B true CN102839650B (en) | 2014-10-15 |
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| CN112626992A (en) * | 2020-12-18 | 2021-04-09 | 杨鹏 | Grouting machine for road construction and operation method |
| CN112627167A (en) * | 2020-12-18 | 2021-04-09 | 杨鹏 | Roadbed underground grouting reinforcement equipment for road construction |
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