CN101892847A - Novel double liquid grout injecting mixer - Google Patents
Novel double liquid grout injecting mixer Download PDFInfo
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- CN101892847A CN101892847A CN 201010245197 CN201010245197A CN101892847A CN 101892847 A CN101892847 A CN 101892847A CN 201010245197 CN201010245197 CN 201010245197 CN 201010245197 A CN201010245197 A CN 201010245197A CN 101892847 A CN101892847 A CN 101892847A
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- liquid slurry
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- grout
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Abstract
The invention relates to a novel double liquid grout injecting mixer, comprising one grout pipe which is vertically arranged for injecting grout, wherein the upper end of the grout pipe is provided with a mix cavity communicated with the grout pipe; the other grout pipe passes through the grout pipe and extends into the mix cavity; the upper end of the other grout pipe is closed, while the lower end is provided with an inlet for injecting the other grout; and a plurality of through holes are reserved on the lateral wall of the upper part of the other grout pipe, while an elastic rubber sleeve is sleeved on the outer wall of the other grout pipe. In the implementing process, cement paste is injected in one grout pipe, and sodium silicate is injected in the other grout pipe; and after sodium silicate with setting pressure is injected from the other grout pipe, the sodium silicate is sprayed out from the through holes to expand the elastic rubber sleeve under the action of grout injecting pressure, flows out of the elastic rubber sleeve, and is mixed with cement paste injected from the grout pipe in the mix cavity. The double liquid grout mixer with the structure ensures that the sodium silicate injected in the clearance can be evenly mixed with the cement paste mixed fluid, and double liquid grout reach designed proportioning required by construction, so that the reliability of the double liquid grout injection is greatly improved.
Description
Technical field
The present invention relates to a kind of slurries injecting mixer, the grouting novel double liquid grout injecting mixer when being shield duct piece back clearance injection biliquid slurry specifically.
Background technology
At present, in the shield construction process, the constructor has more and more improved the importance of section of jurisdiction back clearance filling slurries and the understanding of necessity.The quality of management back clearance grouting quality is directly linked to settling amount and the control of follow-up ground settlement in early stage; Be directly linked to and whether can effectively control the come-up of section of jurisdiction and cause section of jurisdiction encroachment line, breakage; Whether the biliquid slurry that is directly linked to injection can form the curtain of bad hydraulic permeability between section of jurisdiction and country rock body, reach the risk that reduces ground settlement that dehydration brings; Be directly linked to the improvement of the stress of ring-type section of jurisdiction after the cavitation; Be directly linked to the infiltration that causes tunneling direction rear country rock body by the inefficacy of back clearance slip casting, pour into Tu Cang, promptly can prolong the time of surface settlement convergence, cause the aggravation of the continuation sedimentation on the later stage face of land; Also very easily cause simultaneously gushing of tunneling process, the pressure oscillation of aggravation Tu Cang causes the unstability of the face soil body.For this reason, how to ensure shield construction early stage and safety on the later stage face of land in the influence area, slip casting has become the most key important step, at the above cognition that influences the risk that is caused because of slip casting, just can know and recognize that the slurries that injected preferably can condense in short, in the big country rock of transmission coefficient, must be chosen to be at and inject the biliquid slurry in the back clearance for this reason.Yet, when in existing work progress, annotating the biliquid slurry, all be to adopt the three way type blender, this blender very easily produces turbulent flow, and the match ratio of both difficult control biliquid slurry makes the biliquid slurry that injects back clearance mix extremely inhomogeneous, be difficult to reach the effect of rapid condensation, can cause starching the obstruction of pipe and water glass pipe again because of the fluctuation of pressure, cause the application of biliquid not reach its intended purposes like this, influence the effect of slip casting.So far, because of the slip casting effect difference causes tunneling the risk of risk, ground settlement, still troubling the safety of shield construction.
Summary of the invention
At the deficiency of above-mentioned prior art, the technical problem that the present invention solves provides the novel double liquid grout injecting mixer that a kind of slurries mix.
The present invention is achieved in that novel double liquid grout injecting mixer, comprises that one vertically is provided with the liquid slurry pipe that the feed flow slurry injects, and described liquid slurry pipe upper end is provided with the hybrid chamber that communicates with this liquid slurry pipe, and another liquid slurry pipe passes described liquid slurry pipe and stretches in the hybrid chamber; Described another liquid slurry pipe upper end closed, the lower end is provided with the import of injecting for another liquid slurry; Another liquid slurry pipe upper portion side wall has been opened several through holes, and another liquid slurry pipe outer wall is with an elastic caoutchouc cover.
The present invention also has following additional technical feature:
Described liquid slurry pipe upper level be provided with one with the suitable fixed size gauge of this liquid slurry bore, open several feed flows slurries on this fixed size gauge and flow into hole in the described hybrid chamber; Described another liquid slurry pipe passes fixed size gauge and this fixed size gauge is fixed on described another liquid slurry pipe, and described hybrid chamber lower end abutment is in the fixed size gauge outer rim.
Described another liquid slurry pipe lower end is connected with an elbow one end, and this elbow other end passes described liquid slurry tube wall and affixed with tube wall.
Described fixed size gauge is fixed on another liquid slurry pipe by two locking nuts that are separately positioned on the upper and lower side of this fixed size gauge.
Described another liquid slurry pipe upper end is by installing an anticreep bolt seal, and this anticreep bolt downside is provided with a spacing shim.
Described elastic caoutchouc cover bottom is with a banding cover.
Novel double liquid grout injecting mixer provided by the invention compared with prior art has following advantage: the slurry of liquid described in the present invention pipe upper end is provided with the hybrid chamber that communicates with this liquid slurry pipe, and another liquid slurry pipe passes described liquid slurry pipe and stretches in the hybrid chamber; Described another liquid slurry pipe upper end closed, the lower end is provided with the import of injecting for another liquid slurry; Another liquid slurry pipe upper portion side wall has been opened several through holes, and described another liquid slurry pipe outer wall is with an elastic caoutchouc cover.In implementation process, inject cement paste in the described liquid slurry pipe, another liquid slurry pipe injects water glass, after the water glass of setting pressure injects from another liquid slurry pipe, under the effect of grouting pressure, spray in the described through hole elastic caoutchouc cover is strutted, flow to outside the elastic caoutchouc cover, in hybrid chamber, mix with the cement paste that injects from slurry pipe.The blender of this structure makes water glass mix with cement paste with laminar condition, can guarantee that the water glass that injects in the back clearance evenly mixes with the cement paste mixed liquor, can make the biliquid slurry reach the required design mixture proportion of construction, improve the reliability of two fluid grouting greatly.
Description of drawings
Fig. 1 is the structural representation of a kind of optimal way of the present invention.
Fig. 2 is an A-A cross-sectional schematic among Fig. 1.
The specific embodiment
Referring to Fig. 1 to Fig. 2, a kind of optimal way of novel double liquid grout injecting mixer of the present invention is shown, comprise that one vertically is provided with the liquid slurry pipe 1 that the feed flow slurry injects, described liquid slurry pipe upper end is provided with the hybrid chamber 2 that communicates with this liquid slurry pipe, and another liquid slurry pipe 3 passes described liquid slurry pipe and stretches in the hybrid chamber 4; Described another liquid slurry pipe 3 upper end closeds, lower end import and elbow 32 1 ends are by being threaded, this elbow other end passes the tube wall of described liquid slurry pipe and affixed with tube wall, can support described another liquid slurry pipe by elbow like this, encapsulation process also need be carried out in junction at tube wall and elbow, prevents that the liquid slurry from leaking outside.Owing to the time be subjected to the restriction in geographical position, the injection that elbow can be another liquid slurry be set provide convenience in construction.When implementing, another liquid slurry from the lower end import inflow of described another liquid slurry pipe, flows to hybrid chamber through described another liquid slurry pipe then after the other end of elbow injects.Described another liquid slurry pipe upper portion side wall has been opened several through holes 31, and described another liquid slurry pipe outer wall is with elastic caoutchouc cover 4.Described another liquid slurry pipe upper end seals by an anticreep bolt 8 is installed, and the liquid slurry flows out from described another liquid slurry pipe upper end in the time of can avoiding; This anticreep bolt downside is provided with a spacing shim 9, can prevent that elastic caoutchouc cover 4 from skidding off another liquid slurry pipe.In the present embodiment, the liquid slurry that injects in the described liquid slurry pipe is a cement paste, and the liquid slurry that injects in described another liquid slurry pipe is a water glass, and water glass and cement paste can according to circumstances inject according to a certain percentage.Certainly, water glass among the present invention and cement paste also can be starched with other liquid as required and replace.After the water glass of setting pressure injects from another liquid slurry pipe, under the effect of grouting pressure, spray in the described through hole elastic caoutchouc cover is strutted, flow to outside the elastic caoutchouc cover, mix in hybrid chamber with cement paste from the slurry pipe injection.The blender of this structure makes water glass mix with cement paste with laminar condition, can guarantee that the water glass that injects in the back clearance evenly mixes with the cement paste mixed liquor, can make the biliquid slurry reach the required design mixture proportion of construction, improve the reliability of two fluid grouting greatly.In addition, the elastic caoutchouc cover can prevent that cement paste from flowing in the pipeline of water glass, prevents line clogging.In implementation process, should guarantee the pressure of the pressure of water glass in the liquid slurry pipe, have only the pressure differential of existence water glass to spray greater than cement paste.
In the present embodiment, described liquid slurry pipe 1 upper level be provided with one with the suitable fixed size gauge 5 of this liquid slurry bore, open several feed flow slurries on this fixed size gauge and flow into the interior hole 51 of described hybrid chamber, cement paste advances hybrid chamber from these orifice flows, can make cement paste form laminar flow and mix, improve slip casting effect with water glass.Described another liquid slurry pipe passes fixed size gauge and this fixed size gauge is fixed on described another liquid slurry pipe, and described hybrid chamber lower end abutment can guarantee the stable of fixed size gauge in the fixed size gauge outer rim.Described fixed size gauge is fixed another liquid slurry pipe last by two locking nuts 5 that are separately positioned on the upper and lower side of this fixed size gauge, also can fix in other way.Described elastic caoutchouc cover bottom is with banding cover 7, can prevent that elastic caoutchouc cover lower end from strutting, to guarantee that water glass flows to hybrid chamber from the elastic caoutchouc set upper side.The present invention not only constructs simpler, and practical, the very big effect of performance on the mixed problem that solves slurries.
The foregoing description is only for the usefulness that the present invention is described; and be not to be limitation of the present invention; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the spirit and scope of the present invention; can also make various variations and modification; therefore all technical schemes that are equal to also should belong to category of the present invention, and scope of patent protection of the present invention should be limited by each claim.
Claims (6)
1. novel double liquid grout injecting mixer comprises that one vertically is provided with the liquid slurry pipe (1) that the feed flow slurry injects, and it is characterized in that: described liquid slurry pipe upper end is provided with the hybrid chamber (2) that communicates with this liquid slurry pipe, and another liquid slurry pipe (3) passes described liquid slurry pipe and stretches in the hybrid chamber; Described another liquid slurry pipe upper end closed, the lower end is provided with the import of injecting for another liquid slurry; Another liquid slurry pipe upper portion side wall has been opened several through holes (31), and another liquid slurry pipe outer wall is with an elastic caoutchouc cover (4).
2. novel double liquid grout injecting mixer according to claim 1 is characterized in that: described another liquid slurry pipe (3) lower end is connected with an elbow (32) one ends, and this elbow other end passes described liquid slurry tube wall and affixed with tube wall.
3. novel double liquid grout injecting mixer according to claim 2, it is characterized in that: described liquid slurry pipe (1) upper level be provided with one with the suitable fixed size gauge (5) of this liquid slurry bore, open several feed flows slurries on this fixed size gauge and flow into hole (51) in the described hybrid chamber; Described another liquid slurry pipe passes fixed size gauge and this fixed size gauge is fixed on described another liquid slurry pipe, and described hybrid chamber lower end abutment is in the fixed size gauge outer rim.
4. novel double liquid grout injecting mixer according to claim 3 is characterized in that: described fixed size gauge is fixed on another liquid slurry pipe (3) by two locking nuts (6) that are separately positioned on the upper and lower side of this fixed size gauge.
5. novel double liquid grout injecting mixer according to claim 1 is characterized in that: described another liquid slurry pipe (3) upper end seals by an anticreep bolt (8) is installed, and this anticreep bolt downside is provided with a spacing shim (9).
6. novel double liquid grout injecting mixer according to claim 1 is characterized in that: described elastic caoutchouc cover bottom is with a banding cover (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010245197 CN101892847A (en) | 2010-08-04 | 2010-08-04 | Novel double liquid grout injecting mixer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010245197 CN101892847A (en) | 2010-08-04 | 2010-08-04 | Novel double liquid grout injecting mixer |
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| CN101892847A true CN101892847A (en) | 2010-11-24 |
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| CN 201010245197 Pending CN101892847A (en) | 2010-08-04 | 2010-08-04 | Novel double liquid grout injecting mixer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733821A (en) * | 2012-06-19 | 2012-10-17 | 浙江大学 | Secondary double-liquid slurry re-grouting method capable of effectively controlling surface deformation |
| CN105317396A (en) * | 2015-10-13 | 2016-02-10 | 山东大学 | Mixing device for grout in inlet well at ground and application method thereof |
| CN109129887A (en) * | 2018-08-13 | 2019-01-04 | 中铁七局集团西安铁路工程有限公司 | Shield secondary grouting mixer |
| CN110656650A (en) * | 2019-07-31 | 2020-01-07 | 盾构及掘进技术国家重点实验室 | Self-rotating multiple-mixing double-liquid grouting orifice mixing device |
| CN110792472A (en) * | 2019-11-04 | 2020-02-14 | 山东科技大学 | Device and method for mixing and adding chemical reagent into paste filling slurry |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476469A (en) * | 2009-01-06 | 2009-07-08 | 上海隧道工程股份有限公司 | Dual-fluid synchronous slip casting and cleaning switching mechanism |
| CN201330607Y (en) * | 2009-01-06 | 2009-10-21 | 上海隧道工程股份有限公司 | Dual-liquid synchronous grouting washing switching device |
| CN201666156U (en) * | 2010-08-04 | 2010-12-08 | 林辉 | Novel two-shot grouting mixer |
-
2010
- 2010-08-04 CN CN 201010245197 patent/CN101892847A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476469A (en) * | 2009-01-06 | 2009-07-08 | 上海隧道工程股份有限公司 | Dual-fluid synchronous slip casting and cleaning switching mechanism |
| CN201330607Y (en) * | 2009-01-06 | 2009-10-21 | 上海隧道工程股份有限公司 | Dual-liquid synchronous grouting washing switching device |
| CN201666156U (en) * | 2010-08-04 | 2010-12-08 | 林辉 | Novel two-shot grouting mixer |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733821A (en) * | 2012-06-19 | 2012-10-17 | 浙江大学 | Secondary double-liquid slurry re-grouting method capable of effectively controlling surface deformation |
| CN105317396A (en) * | 2015-10-13 | 2016-02-10 | 山东大学 | Mixing device for grout in inlet well at ground and application method thereof |
| CN105317396B (en) * | 2015-10-13 | 2018-04-17 | 山东大学 | Slurries mixing arrangement and its application method in a kind of surface grout injection drilling |
| CN109129887A (en) * | 2018-08-13 | 2019-01-04 | 中铁七局集团西安铁路工程有限公司 | Shield secondary grouting mixer |
| CN110656650A (en) * | 2019-07-31 | 2020-01-07 | 盾构及掘进技术国家重点实验室 | Self-rotating multiple-mixing double-liquid grouting orifice mixing device |
| CN110656650B (en) * | 2019-07-31 | 2024-02-02 | 盾构及掘进技术国家重点实验室 | Dual-liquid grouting orifice mixing device capable of achieving self-rotation multiple mixing |
| CN110792472A (en) * | 2019-11-04 | 2020-02-14 | 山东科技大学 | Device and method for mixing and adding chemical reagent into paste filling slurry |
| CN110792472B (en) * | 2019-11-04 | 2021-06-15 | 山东科技大学 | Device and method for mixing and adding chemical reagent into paste filling slurry |
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Application publication date: 20101124 |