Shield grouting transport system with segmentation reducing driving structure
Technical field
The invention discloses a kind of structure that slip casting is carried out to the shield machine soil body more particularly to segmentation reducing driving structure
Shield grouting transport system, belong to shield machine construction technical field.
Background technology
In shield tunneling process, grouting behind shaft or drift lining mainly solves the problems, such as following:
(1) stratum deformation is controlled.Since the digging diameter of cutter head of shield machine is more than section of jurisdiction outer diameter, pipe sheet assembling finishes abjection
After shield tail, an annular gap, abbreviation gap of the shield tail are formed between the soil body.If gap of the shield tail cannot be filled in time, gesture
Stratum deformation must be caused, adjacent earth's surface building, structure sedimentation or tunnel is made to generate offset in itself.Grouting at the tail of the shield machine it is most heavy
Syllabus is exactly timely filling gap of the shield tail, prevents from causing stratum that larger deformation occurs because of the presence of gap of the shield tail.
(2) impermeability in tunnel is improved.After grouting at the tail of the shield machine solidification, generally there is anti-permeability performance, it can be as the first of tunnel
Road water-proof wire, so as to improve the anti-permeability performance in tunnel.
(3) slurries for possessing certain early strength fill gap of the shield tail in time, it can be ensured that the early strength of pipe-plate lining
And stability at later stage.Shield tunnel is the structure of a kind of pipe-plate lining and the coefficient stable structure of country rock, and section of jurisdiction is carried on the back
It uniformly, densely injects, fill the precondition for being to ensure that soil pressure stepless action in face gap.
Therefore, when pipe-plate lining carries out assembled, ensure slurries uniformly, to be densely attached with the soil body be very
Important.
The content of the invention
It is an object of the invention to be directed to during shield machine excavates effectively to connect pipe-plate lining, therefore devise a set of
Injection slurry and additive carry out effectively mixing compression system, and guarantee slurries are uniform, dense packing effect.
The uniform mixing slurry mixed by adding a mixing chamber realization, injection slurry and additive of injection slurry and additive
It when liquid is output, is realized by a spiral gradient cavity volume, the final pressurization for realizing slurries.
To achieve the above object, the technical solution adopted by the present invention is the shield grouting conveying with segmentation reducing driving structure
System, the system include slip casting liquid pipe 1, auxiliary additive pipe 2, mixing cavity volume 3, secondary mixing pressurizing chamber 4, advanced mixing pressurization
Chamber 5, slip casting delivery pipe 6, force (forcing) pump 7 and check valve 8.
Slip casting liquid pipe 1, auxiliary additive pipe 2 are connected with mixing cavity volume 3, and the delivery outlet of mixing cavity volume 3 passes through first segment
Pipeline is connected with secondary mixing pressurizing chamber 4, and secondary mixing pressurizing chamber 4 is connected by the second segment pipe with advanced mixing pressurizing chamber 5,
Advanced mixing pressurizing chamber 5 is connected by the 3rd segment pipe with slip casting delivery pipe 6.
The diameter of first segment pipe, the diameter of the second segment pipe, the diameter of the 3rd segment pipe taper into, in systems shape
Into segmentation reducing pressurizing structure.
Check valve 8 is equipped in first segment pipe, the second segment pipe, the 3rd segment pipe.
Advanced mixing pressurizing chamber 5 is connected with force (forcing) pump 7.
It is the structure of spiral gradient in secondary mixing pressurizing chamber 4, advanced mixing pressurizing chamber 5, by entrance to outlet
Volume taper into, volume gradual change is utilized to realize primary and advanced two-step supercharging.
Compared with prior art, the present invention has the advantages that.
The present invention realizes the mixing of slip casting liquid pipe, auxiliary additive pipe by mixing cavity volume first, and then mixing cavity volume will
The slurries of mixing are inputted to secondary and mixed in pressurizing chamber, and slurries are carried out primary pressure processing by secondary mixing pressurizing chamber, after pressurization
Slurries into it is advanced mixing pressurizing chamber in, secondary mixing pressurizing chamber and it is advanced mixing pressurizing chamber be spiral gradient cavity volume knot
Structure realizes being sufficiently mixed and pressurizeing for slurries with this configuration;Check valve ensures the stabilization of each pipeline, and the pipeline after slip casting is most
It is exported eventually through slip casting delivery pipe.Whole system can be stablized, uniformly, densely be attached slurries and section of jurisdiction, economic performance
It is good cost-effective.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structure diagram of mixing pressurizing chamber.
In figure:1st, slip casting liquid pipe, 2, auxiliary additive pipe, 3, mixing cavity volume, 4, secondary mixing pressurizing chamber, 5, advanced mixing
Pressurizing chamber, 6, slip casting delivery pipe, 7, force (forcing) pump, 8 check valves.
Specific embodiment
As shown in Figs. 1-2, with segmentation reducing driving structure shield grouting transport system, the system include slip casting liquid pipe 1,
Auxiliary additive pipe 2, mixing cavity volume 3, secondary mixing pressurizing chamber 4, advanced mixing pressurizing chamber 5, slip casting delivery pipe 6,7 and of force (forcing) pump
Check valve 8.
Slip casting liquid pipe 1, auxiliary additive pipe 2 are connected with mixing cavity volume 3, and the delivery outlet of mixing cavity volume 3 passes through first segment
Pipeline is connected with secondary mixing pressurizing chamber 4, and secondary mixing pressurizing chamber 4 is connected by the second segment pipe with advanced mixing pressurizing chamber 5,
Advanced mixing pressurizing chamber 5 is connected by the 3rd segment pipe with slip casting delivery pipe 6.
The diameter of first segment pipe, the diameter of the second segment pipe, the diameter of the 3rd segment pipe taper into, in systems shape
Into segmentation reducing pressurizing structure.
Check valve 8 is equipped in first segment pipe, the second segment pipe, the 3rd segment pipe.
Advanced mixing pressurizing chamber 5 is connected with force (forcing) pump 7.
It is the structure of spiral gradient in secondary mixing pressurizing chamber 4, advanced mixing pressurizing chamber 5, by entrance to outlet
Volume taper into, volume gradual change is utilized to realize primary and advanced two-step supercharging.
The present invention realizes the mixing of slip casting liquid pipe, auxiliary additive pipe by mixing cavity volume first, and then mixing cavity volume will
The slurries of mixing are inputted to secondary and mixed in pressurizing chamber, and slurries are carried out primary pressure processing by secondary mixing pressurizing chamber, after pressurization
Slurries into it is advanced mixing pressurizing chamber in, secondary mixing pressurizing chamber and it is advanced mixing pressurizing chamber be spiral gradient cavity volume knot
Structure realizes being sufficiently mixed and pressurizeing for slurries with this configuration;Check valve ensures the stabilization of each pipeline, and the pipeline after slip casting is most
It is exported eventually through slip casting delivery pipe.Whole system can be stablized, uniformly, densely be attached slurries and section of jurisdiction, economic performance
It is good cost-effective.
The principle that tradition is driven pipeline by booster pump is different from, structure according to the present invention utilizes spiral gradient
With capacity cavity configuration, pressurize to mixed serum, meanwhile, the pipeline reducing diameter structure of three-level gradual change is also constituted to system sheet
The driving structure of body supercharging;Compared with prior art, the system combines hydraulic principle and engine driven supercharging principle, is applied
In shield grouting system, realize shield grouting process stabilization, rationally, uniformly.