CN214660172U - Intelligent grouting device suitable for synchronous grouting and pressure flow linkage of shield tunnel - Google Patents
Intelligent grouting device suitable for synchronous grouting and pressure flow linkage of shield tunnel Download PDFInfo
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- CN214660172U CN214660172U CN202023168531.1U CN202023168531U CN214660172U CN 214660172 U CN214660172 U CN 214660172U CN 202023168531 U CN202023168531 U CN 202023168531U CN 214660172 U CN214660172 U CN 214660172U
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Abstract
The utility model discloses an intelligent grouting device suitable for synchronous slip casting pressure flow linkage of shield tunnel, include: the grouting pump, the grouting pump includes piston and piston drive arrangement, the thick liquid gets into from the entry of unloading passageway, the export of unloading passageway is linked together with the entry in jar chamber, cross-section department at unloading passageway sets up into thick liquid check valve, the export in jar chamber is linked together with the entry of arranging the thick liquid passageway, cross-section department at arranging the thick liquid passageway sets up row thick liquid check valve, the piston slides and sets up in the jar chamber, the piston passes through the drive of piston drive arrangement, the export of arranging the thick liquid passageway is linked together with the entry of slip casting pipeline, the export of slip casting pipeline stretches into the slip casting region, pressure sensor is used for detecting the regional pressure signal of slip casting, electromagnetic flow sensor is used for detecting the flow signal of the export of slip casting pipeline, intelligent control terminal receives pressure signal and flow signal, pressure signal is used for feedback control piston drive arrangement.
Description
Technical Field
The utility model belongs to the technical field of shield tunnel excavation engineering, in particular to intelligent grouting device suitable for synchronous slip casting pressure flow linkage of shield tunnel is applicable to synchronous slip casting and secondary slip casting in shield tunnel construction shield shell and section of jurisdiction clearance, especially subsides, the slip casting engineering that tunnel lining waterproof nature required rigorously to ground around the tunnel.
Background
With the rapid development and continuous improvement of urbanization, underground rail transit has become a preferred method for solving traffic congestion in large cities and improving travel efficiency as a safe, convenient, efficient and ground-resource-free traffic mode, and many cities are building or expanding urban subway tunnel lines at present. The construction of urban subways mostly adopts a shield machine excavation technology, the construction process of the shield machine determines the existence of a tunnel overexcavation phenomenon, namely, as the shield machine is continuously pushed in a soil layer, a gap with a certain volume exists between a duct piece and an excavated soil layer boundary, synchronous grouting is needed to fill the tunnel gap, and if the synchronous grouting is not in place, the problems of soil deformation, surface subsidence, duct piece dislocation, deformation and the like can be caused, so that the safety and the ground subsidence control capability of the shield tunnel are inseparable from the synchronous grouting of the tunnel. The effect of the synchronous grouting of the shield tunnel depends on the game of the collapse speed of the soil body in the gap and the grouting speed, in order to win the game, the quick and sufficient grouting is achieved, the effect of synchronous grouting is ensured, and besides the need of preparing slurry with good performance, the grouting construction is carried out by using an efficient grouting pump.
Scholars and experts at home and abroad develop a great deal of related research on synchronous grouting pumps. The grouting pump that current actual engineering adopted is piston type grouting pump mostly, and its characteristics are that the rotational speed of grouting pump is invariable or the rotational speed needs manual regulation, just so can not in good time carry out grouting speed's regulation according to the sufficient condition in front end slip casting space, can lead to phenomena such as the too slow undersize of slip casting speed in the early stage of slip casting, the slip casting pressure in slip casting later stage is too big. If grouting pressure undersize can lead to ground subside too big, grouting pressure is too big can cause tunnel space soil layer splitting around, arouses the dislocation and the deformation of shield structure section of jurisdiction, still can arouse simultaneously that the slip casting pipe bursts, increases engineering cost and engineering risk. In addition, the past grouting pump monitoring sensor is arranged at the output port of the grouting pump, and certain pressure loss exists at the output port of the grouting pump and the tail end of a grouting pipeline in practice, so that the actual grouting pressure is smaller than the set grouting pressure.
In conclusion, the existing synchronous grouting pump cannot well meet construction requirements and cannot form good cooperation with grout to quickly and completely fill a tunnel gap, so that the construction quality and the construction progress of a subway tunnel can be influenced, the grouting effect needs to be improved by improving a grouting device, and the existing problem is solved.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an intelligence grouting device suitable for synchronous slip casting pressure flow linkage of shield tunnel to solve the abundant condition regulation slip casting speed in the intelligence that exists among the correlation technique according to front end slip casting space, slip casting in-process slip casting pressure is invariable with the slip casting flow, and the slip casting pump still operates the problem that produces the blast when the thick liquid is stifled the pipe.
According to the embodiment of the utility model provides an intelligent grouting device suitable for synchronous slip casting pressure flow linkage of shield tunnel is provided, include: grouting pump, unloading passageway, jar chamber, row's thick liquid passageway, slip casting pipeline, pressure sensor, electromagnetic flow sensor, intelligent control terminal, advance thick liquid check valve, arrange the thick liquid check valve, the grouting pump includes piston and piston drive arrangement, and the thick liquid is followed the entry entering of unloading passageway, the export of unloading passageway with the entry in jar chamber is linked together, it sets up to advance thick liquid check valve the cross-section department of unloading passageway, the export in jar chamber with the entry of row's thick liquid passageway is linked together, it sets up to arrange the thick liquid check valve the cross-section department of row's thick liquid passageway, the piston slides and sets up in the jar chamber, the piston passes through the drive of piston drive arrangement, the export of row's thick liquid passageway with the entry of slip casting pipeline is linked together, the export of slip casting pipeline stretches into the slip casting region, pressure sensor is used for detecting the regional pressure signal of slip casting, the intelligent control system comprises an electromagnetic flow sensor, an intelligent control terminal and a piston driving device, wherein the electromagnetic flow sensor is used for detecting a flow signal of an outlet of a grouting pipeline, the intelligent control terminal receives a pressure signal and the flow signal, and the pressure signal is used for feedback control of the piston driving device.
Further, the slurry feeding device also comprises a slurry storage box for slurry, and an outlet of the slurry storage box is communicated with an inlet of the feeding channel.
Further, the slurry storage tank is a stirring tank.
Further, an outlet of the pulp storage box is communicated with an inlet of the blanking channel through the pulp blanking barrel.
Furthermore, a water inlet pipeline is connected to the slurry discharging barrel.
Furthermore, a grouting feed opening switch valve is arranged on the section of the slurry feeding barrel and is positioned above the access position of the water inlet pipeline.
Furthermore, the piston driving device comprises a screw rod sliding block mechanism, a servo motor and a servo driver, wherein the servo driver controls the servo motor, the servo motor drives a screw rod end of the screw rod sliding block mechanism to rotate, and a sliding block end of the screw rod sliding block mechanism drives the piston to move linearly.
Further, the blanking channel is provided with two outlets which are respectively communicated with inlets at two ends of the cylinder cavity.
Further, the slurry discharge channel is provided with two inlets which are respectively communicated with outlets at two ends of the cylinder cavity.
Furthermore, each outlet is provided with a pulp inlet one-way valve, and each inlet is provided with a row of pulp outlet one-way valves. According to the technical scheme, the embodiment of the utility model provides a contrast with prior art, have following beneficial effect:
the existing grouting pump of contrast, current grouting pump arrange the thick liquid mouth of row at the grouting pump to the slip casting monitoring sensor, the utility model discloses the people discovery is because the slip casting pipeline can exert an influence to grouting pressure, flow etc. consequently, arranges monitoring sensor at the thick liquid mouth of row of grouting pump can not accurately reflect slip casting data. The utility model discloses a pressure sensor, flow sensor arrange at the slip casting pipeline end, the terminal slip casting actual data of accurate control slip casting, through adjusting servo driver and servo motor, slip casting pressure and slip casting flow linkage are realized to intelligence.
The electromagnetic flow sensor and the pressure sensor are arranged at the tail end of the grouting pipeline and connected with the intelligent control terminal in the control chamber of the shield tunneling machine, the servo driver and the servo motor are controlled through the intelligent control terminal according to data feedback of the sensors, the rotating speed of the servo motor is changed timely, the smaller the pressure of a grouting area in the initial grouting stage is, the higher the rotating speed of the grouting pump is, the higher the piston movement frequency is, and the effect of quick grouting is achieved.
The pressure in regional tunnel clearance of slip casting is monitored to the terminal pressure influenza ware of slip casting pipeline, the monitoring pressure value can change along with the sufficient degree in slip casting process tunnel clearance, the grouting pump passes through the combination at the terminal pressure flow sensor of slip casting pipe and intelligent control terminal, really realize the linkage of the pressure flow of slip casting in-process, when the initial tunnel pore pressure of slip casting is less, the grouting pump accelerates piston motion frequency, realize quick slip casting along with the increase of monitoring pressure value, the intelligent control terminal reduces grouting pump pumping frequency, pressure sensor stops grouting pump work after reaching a definite value.
The utility model discloses a pressure sensor, electromagnetic flow sensor are connected with intelligent control terminal, can cooperate the sensor according to the site operation environment, change the slip casting parameter in good time to the construction environment.
The synchronous grouting pump is characterized in that the optimal grouting pressure value of synchronous grouting is set firstly, then intelligent linkage with the rotating speed of the grouting pump is realized according to the pressure of a grouting opening in a gap of the shield tail, the smaller the pressure of the grouting opening is, the higher the rotating speed of the grouting pump is, and when the pressure of the grouting opening reaches the optimal value, the grouting pump stops conveying grout immediately, so that the pressure flow linkage of grouting of the shield tunnel is really realized, the engineering purpose of intelligent monitoring and adjustment is achieved, and the optimal synchronous grouting effect of the shield tunnel is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic diagram illustrating an intelligent grouting device suitable for synchronous grouting and pressure flow linkage of a shield tunnel according to an exemplary embodiment.
FIG. 2 is a schematic diagram of a grouting pump configuration shown in accordance with an exemplary embodiment.
Figures 3, 4, and 5 are cross-sectional schematic views of the grouting pump illustrating different positions of the piston according to an exemplary embodiment.
Description of reference numerals: the device comprises a slurry storage tank 1, a stirring regulation and control system 2, a slurry storage tank support 3, a grouting pump 4, a grouting pump support 5, a grouting pipeline 6, a pressure sensor 7, an electromagnetic flow sensor 8, a grouting area 9, a grouting pump connecting line 10, an intelligent regulation and control terminal 11, a shield machine control chamber 12, a slurry discharging barrel 13, a water inlet pipeline 14, a slurry pumping tank 15, a slurry output pipeline 16, a piston rod barrel 17, a screw rod slider mechanism 18, a servo motor 19, a servo driver 20, a grouting discharging opening switch valve 21, a discharging channel 22, a left slurry feeding check valve 23, a piston rod 24, a piston 25, a cylinder cavity 26, a left slurry discharging check valve 27, a slurry discharging channel 28, a right slurry feeding check valve 29 and a right slurry discharging check valve 30.
Detailed Description
The technical solutions in the embodiments of the present invention will be further described below with reference to the drawings in the embodiments of the present invention, and it should be noted that, for those skilled in the art, based on the principle of the present invention, several modifications will also fall into the protection scope of the claims of the present invention.
Fig. 1 is a schematic diagram illustrating an intelligent grouting device suitable for synchronous grouting and pressure flow linkage of a shield tunnel according to an exemplary embodiment. As shown in fig. 1, the embodiment of the utility model provides an intelligent grouting device suitable for synchronous slip casting pressure flow linkage of shield tunnel, include: grouting pump 4, unloading passageway 22, jar chamber 26, row's thick liquid passageway 28, slip casting pipeline 6, pressure sensor 7, electromagnetic flow sensor 8, intelligent control terminal 11, advance thick liquid check valve, row's thick liquid check valve, grouting pump 4 includes piston and piston drive arrangement, and the thick liquid is followed the entry entering of unloading passageway 22, the export of unloading passageway 22 with the entry of jar chamber 26 is linked together, it sets up to advance thick liquid check valve the cross-section department of unloading passageway 22, the export of jar chamber 26 with the entry of row's thick liquid passageway is linked together, row's thick liquid check valve sets up the cross-section department of row's thick liquid passageway, the piston slides and sets up in jar chamber 26, the piston passes through the drive arrangement drive, the export of row's thick liquid passageway 28 with the entry of slip casting pipeline 6 is linked together, the export of slip casting pipeline 6 stretches into slip casting region 9, the pressure sensor 7 is used for detecting a pressure signal of the grouting area 9, the electromagnetic flow sensor 8 is used for detecting a flow signal of an outlet of the grouting pipeline 6, the intelligent control terminal 11 receives the pressure signal and the flow signal, and the pressure signal is used for feedback control of the piston driving device.
Based on above structure, intelligent control terminal 11 passes through grouting pump connecting wire 10 and connects and control grouting pump 4, intelligent control terminal 11 control is located grouting pump 4 on grouting pump support 5, control slip casting operating condition, slip casting efficiency and the geological conditions that needs according to actual tunnel engineering set up best slip casting flow and best pressure value, grouting pump 4 passes through the combination of the terminal pressure flow sensor 7 of grouting pipeline 6 and intelligent control terminal 11, really realize the pressure flow linkage of slip casting in-process. At the slip casting inception, tunnel space pressure is less promptly when pressure sensor transmission pressure value is less, and the grouting pump reaches ideal slip casting flow fast, and the grouting pump accelerates the piston motion frequency, and then increases the slip casting flow, realizes quick slip casting, fills the section of jurisdiction and the annular space of tunnel excavation cross-section, reduces the mesh that ground subsides. Along with the increase of the pressure value of slip casting progress pressure sensor transmission, it is great to wait to monitor the pressure value, and when the regional packing of slip casting will be accomplished, intelligent control terminal reduces grouting pump pumping frequency, prevents under the regional difficult diffusion prerequisite of thick liquid of slip casting, and the quick slip casting of grouting pump blocks up the grouting pump, takes place the danger of explosion. When the grouting pressure value reaches the optimal pressure value, the grouting pump stops operating immediately, so that the grouting pump still pumps slurry under the condition that the tunnel gap is filled, the possibility of pipe burst is increased, and even the pipe piece is misplaced. In this example, the intelligent control terminal 11 may be located in the shield machine control room 12.
In this embodiment, a slurry storage tank 1 for slurry may be further included, and an outlet of the slurry storage tank 1 is communicated with an inlet of the discharging channel 22, as shown in fig. 1. The thick liquid in the storage box 1 gets into unloading passageway 22 under the action of gravity, and then is pumped to grouting area 9 by grouting pump 4, shortens the passageway distance of thick liquid to the grouting pump, realizes that the thick liquid in the storage box directly flows into the grouting pump, make full use of tunnel construction space.
In this embodiment, the slurry storage tank 1 is a stirring tank, and is shown in fig. 1. The slurry storage tank 1 can be positioned on the slurry storage tank support 3, the slurry storage tank 1 is designed to conveniently and temporarily store slurry to be injected, the distance of a grouting pipeline is shortened, the risk of pipe blockage is reduced, other admixture materials can be temporarily added into the slurry during grouting, and the performance and the pumpability of the slurry are improved.
In addition, in order to control the stirring speed of the slurry in the slurry storage tank, the stirring regulation and control system 2 externally hung on the slurry storage tank 1 is connected with the intelligent regulation and control terminal 11, the intelligent regulation and control terminal can be programmed according to the initial setting speed and the fluidity loss speed of actual grouting slurry, the stirring regulation and control system can change the stirring speed of the slurry in the slurry storage tank timely according to the program, the fluidity loss speed of the slurry is adjusted, and the possibility of pipe blockage of the slurry is reduced. In this embodiment, the stirring control system 2 may adopt a product model SINAMICS V206 SL3210-5BE31-1UV0, but is not limited thereto, and the intelligent control terminal 11 may adopt a product model siemens programmable controller 6ES7214-1BD23-0XB8, but is not limited thereto.
In this embodiment, the outlet of the stock chest 1 is connected to the inlet of the discharge channel 22 via a slurry discharge barrel 13, as shown in fig. 2. The slurry discharging barrel 13 is arranged between the outlet of the slurry storage box 1 and the discharging channel 22, so that switches such as a grouting discharging opening switch valve 21 and the like can be conveniently arranged in the slurry discharging barrel 13, the channel switch of slurry to the grouting pump 4 is controlled, and the discharging channel of the grouting discharging barrel can be conveniently closed when the problem of slurry storage during grouting is solved.
In this embodiment, be provided with slip casting feed opening ooff valve 21 on the cross-section of feed cylinder 13 under the thick liquid, it has intake pipe 14 to connect on the feed cylinder 13 under the thick liquid, slip casting feed opening ooff valve 21 is located the top of intake pipe 14 access point, it is shown with reference to fig. 2, when the stifled pipe condition of thick liquid takes place after slip casting pump pumping thick liquid is accomplished, can close the slip casting feed opening ooff valve 21 in the thick liquid feed cylinder 13 of storage case, open intake pipe 14, let in water and replace the thick liquid, erode the slip casting pump, prevent to remain thick liquid and block up the slip casting pump, also can be under the circumstances of slip casting in-process stifled pipe, the water-flowing erodees the pipeline.
In this embodiment, the piston driving device includes a screw rod slider mechanism 18, a servo motor 19, and a servo driver 20, the servo driver 20 controls the servo motor 19, the servo motor 19 drives a screw rod end of the screw rod slider mechanism 18 to rotate, a slider end of the screw rod slider mechanism 18 drives the piston to move linearly, referring to fig. 2, the slider end of the screw rod slider mechanism 18 drives a piston connecting rod in the piston rod cylinder 17 to move linearly, and the screw rod slider mechanism realizes conversion between motor rotation and piston rod linear motion. The rotation speed of the servo motor 19 is controlled through the servo driver 20, the rotation speed of the screw rod end of the screw rod sliding block mechanism 18 influences the sliding speed of the screw rod, the linear motion speed and the linear motion frequency of a piston rod 24 in the piston rod cylinder 17 are controlled, different pumping power is provided for pumping slurry of the slurry pumping box 15, the pumped slurry enters the slurry output pipeline 16 at a certain flow rate and pressure and then enters the grouting pipeline, and the pumped slurry is delivered to the grouting area 9.
In this embodiment, the discharging channel 22 has two outlets, the two outlets are respectively communicated with inlets at two ends of the cylinder cavity 26, and each outlet is provided with a pulp inlet check valve, namely a left pulp inlet check valve 23 and a right pulp inlet check valve 29. Correspondingly, the slurry discharge channel is provided with two inlets which are respectively communicated with outlets at two ends of the cylinder cavity 26, and each inlet is provided with a slurry discharge one-way valve, namely a left slurry discharge one-way valve 27 and a right slurry discharge one-way valve 30. Referring to fig. 3, the slurry pumping tank 15 includes: the slurry discharging device comprises a blanking channel 22, a cylinder cavity 26 and a slurry discharging channel 28, wherein a left slurry feeding check valve 23 and a right slurry feeding check valve 29 are arranged at the section of the blanking channel 22, the outlet of the cylinder cavity 26 is communicated with the inlet of the slurry discharging channel 28, a left slurry discharging check valve 27 and a right slurry discharging check valve 30 are arranged at the section of the slurry discharging channel, a piston 25 is arranged in the cylinder cavity 26 in a sliding mode, the piston 25 is connected with a piston connecting rod 24, and the piston is driven by a piston driving device. Fig. 3 is a diagram showing a state of the slurry flow when the piston slides at the leftmost end position of the cylinder chamber. The slurry enters the left slurry inlet one-way valve 23 and the right slurry inlet one-way valve 29 from the inlet of the blanking channel 22, when the piston moves to the leftmost end of the cylinder cavity under the driving action of the piston connecting rod, the right slurry inlet one-way valve 29 and the left slurry discharge one-way valve 27 are opened under the pressure difference, the slurry enters the cylinder cavity from the right slurry inlet one-way valve 29, the slurry at the left end of the piston in the cylinder cavity flows through the left slurry discharge one-way valve 27 under the extrusion action of the piston, enters the slurry discharge channel 28, finally flows through the slurry output pipeline 16 and enters the grouting pipeline 6. The four one-way valves arranged at the inlet and the outlet of the slurry in the cylinder cavity efficiently utilize the pressure difference generated by the reciprocating motion of the piston, and realize the continuous work of the suction and the discharge of the grouting slurry under the condition that the piston reciprocates back and forth.
Referring to fig. 4, fig. 4 is a view showing a state of the slurry flow when the piston slides at the intermediate position of the cylinder chamber. The slurry enters the left slurry inlet one-way valve 23 and the right slurry inlet one-way valve 29 from the inlet of the blanking channel 22, when the piston moves to the middle position from the left end of the cylinder cavity under the driving action of the piston connecting rod, the left slurry inlet one-way valve 23 and the right slurry discharge one-way valve 30 are opened under the pressure difference, the right slurry inlet one-way valve 29 and the left slurry discharge one-way valve 27 are closed under the pressure difference, the slurry enters the cylinder cavity from the left slurry inlet one-way valve 23, and the slurry at the right end of the piston of the cylinder cavity flows through the right slurry discharge one-way valve 30 under the extrusion action of the piston, enters the slurry discharge channel 28, finally flows through the slurry output pipeline 16 and enters the grouting pipeline 6.
Referring to fig. 5, fig. 5 is a view showing a state of the slurry flow when the piston slides to the right end position of the cylinder chamber. The slurry enters the left slurry inlet one-way valve 23 and the right slurry inlet one-way valve 29 from the inlet of the blanking channel 22, when the piston moves to the middle position from the left end of the cylinder cavity under the driving action of the piston connecting rod, the left slurry inlet one-way valve 23 and the right slurry discharge one-way valve 30 are opened under the pressure difference, the right slurry inlet one-way valve 29 and the left slurry discharge one-way valve 27 are closed under the pressure difference, the slurry enters the cylinder cavity from the left slurry inlet one-way valve 23, and the slurry at the right end of the piston of the cylinder cavity flows through the right slurry discharge one-way valve 30 and enters the slurry discharge channel 28 under the extrusion action of the piston. When the piston starts to move towards the left end, the right pulp inlet check valve 29 and the left pulp outlet check valve 27 are opened under the pressure difference, the pulp enters the cylinder cavity from the right pulp inlet check valve 29, and the pulp at the left end of the piston of the cylinder cavity flows through the left pulp outlet check valve 27 under the extrusion action of the piston and enters the pulp outlet channel.
Fig. 3, 4 and 5 show the reciprocating cycle state of the piston motion, the reciprocating frequency of the piston is related to the rotating speed of the servo motor, and the higher the rotating speed of the servo motor, the higher the reciprocating frequency of the piston is, and the larger the grouting amount pumped in unit time is. The intelligent control terminal receives the tunnel clearance pressure signal transmitted by the pressure sensor at the grouting area and the flow signal transmitted by the flow sensor, the pressure signal and the flow signal are used for feedback control the piston driving device, when the pore pressure of the initial grouting tunnel is lower, the intelligent control terminal controls the grouting pump to accelerate the piston motion frequency, so that quick grouting is realized, the annular gap between the pipe piece and the tunnel excavation section is filled, and the purpose of ground settlement is reduced. Along with the sufficient percentage increase in tunnel clearance, treat that pressure sensor monitoring pressure value is great, when the regional packing of slip casting will be accomplished, the intelligent control terminal reduces slip casting pump piston frequency of motion, prevents under the regional difficult diffusion prerequisite of thick liquid of slip casting, and the slip casting pump is still at quick slip casting, leads to the thick liquid to block up the slip casting pump under the slow prerequisite of diffusion, increases the possibility of slip casting pipe explosion.
In summary, the description is based on specific engineering application cases.
The size of the grouting storage box and the size of the grouting pump adopted by the grouting device can be flexibly adjusted according to the shield excavation progress and the concrete engineering geological condition. The size of the slurry storage box is adjusted according to the actual single grouting amount of the project, and the pumping efficiency of the grouting pump can be adjusted by changing the servo motor and the servo driver. The grouting device can meet the application of single-fluid grouting engineering. The mixing ratio of grouting slurry can be flexibly changed, and the actual grouting only needs to adjust the working frequency of the servo motor and the servo driver according to the specific grouting flow and grouting pressure.
The grouting device for pressure flow linkage fills a tunnel gap, and the intelligent grouting method suitable for synchronous grouting and pressure flow linkage of the shield tunnel comprises the following steps:
step (1), preparing grout to be grouted according with single grouting amount, connecting the grouting pipeline 6 of the grouting pump 4, and enabling the grout in the grouting pipeline 6 of the grouting pump 4 to go deep into a grouting area 9;
step (2), the intelligent control terminal 11 controls a grouting pump to control a grouting working state, firstly, an optimal grouting flow and an optimal pressure value are set according to grouting efficiency and geological conditions required by actual tunnel engineering, the intelligent control terminal 11 receives pressure signals and flow signals transmitted by the pressure sensor 7 and the electromagnetic flow sensor 8 respectively, at the beginning of grouting, the grouting pump quickly reaches the optimal grouting flow, the pressure value transmitted by the pressure sensor increases along with the grouting progress, the intelligent control terminal gradually reduces the piston motion frequency and the grouting flow, and when the grouting pressure value reaches the optimal pressure value, the grouting pump immediately stops grouting;
step (3), starting the grouting pump 4 to prepare grouting, driving the grouting pump to start working by the intelligent control terminal 11, driving a piston in a cylinder cavity 26 to start sliding by a piston driving device of the grouting pump, and generating pressure difference on the inner side and the outer side of a grout inlet check valve and a grout outlet check valve of the cylinder cavity by extruding air through the sliding of the piston;
step (4), grouting slurry passes through the blanking channel 22 under the action of self weight and reaches the joint of the blanking channel 22 and the cylinder cavity 26, a slurry inlet one-way valve is opened under the action of pressure difference generated by piston movement, the slurry is sucked into the cylinder cavity, and the slurry in the cylinder cavity enters the slurry discharge channel 28 through a slurry discharge one-way valve opened under the action of pressure difference under the extrusion action of the piston;
step (5), under the continuous driving of the piston driving device, the piston continuously sucks and discharges the slurry of the blanking channel into the slurry discharge channel, and finally the slurry in the slurry discharge channel enters the slurry injection pipeline 6 in a certain pressure and flow rate mode and is discharged into the slurry injection area 9;
and (6) continuously feeding back pressure signals and flow signals to the intelligent regulation and control terminal by the pressure sensor 7 and the electromagnetic flow sensor 8 at the tail end of the grouting pipeline in the grouting area, and regulating and controlling the sliding speed and frequency of a piston of the grouting pump.
And (7) stopping the grouting pump when the pressure transmitted by the pressure sensor reaches a set pressure value. After the grouting operation is completed, the grouting blanking switch valve 21 can be closed, the connection between the grouting pipeline 6 and the slurry output pipeline 16 is disconnected, the grouting pump 4 is restarted, the water inlet pipeline 14 is opened, water is enabled to enter the blanking channel 22 instead of slurry, and the residual slurry in the internal channel of the grouting pump is washed away.
The above description is only the preferred embodiment of this patent and does not limit the scope of this patent.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. The utility model provides an intelligence slip casting device suitable for synchronous slip casting pressure flow linkage of shield tunnel which characterized in that includes: grouting pump, unloading passageway, jar chamber, row's thick liquid passageway, slip casting pipeline, pressure sensor, electromagnetic flow sensor, intelligent control terminal, advance thick liquid check valve, arrange the thick liquid check valve, the grouting pump includes piston and piston drive arrangement, and the thick liquid is followed the entry entering of unloading passageway, the export of unloading passageway with the entry in jar chamber is linked together, it sets up to advance thick liquid check valve the cross-section department of unloading passageway, the export in jar chamber with the entry of row's thick liquid passageway is linked together, it sets up to arrange the thick liquid check valve the cross-section department of row's thick liquid passageway, the piston slides and sets up in the jar chamber, the piston passes through the drive of piston drive arrangement, the export of row's thick liquid passageway with the entry of slip casting pipeline is linked together, the export of slip casting pipeline stretches into the slip casting region, pressure sensor is used for detecting the regional pressure signal of slip casting, the intelligent control system comprises an electromagnetic flow sensor, an intelligent control terminal and a piston driving device, wherein the electromagnetic flow sensor is used for detecting a flow signal of an outlet of a grouting pipeline, the intelligent control terminal receives a pressure signal and the flow signal, and the pressure signal is used for feedback control of the piston driving device.
2. The intelligent grouting device suitable for synchronous grouting and pressure flow linkage of the shield tunnel according to claim 1, further comprising a slurry storage tank for slurry, wherein an outlet of the slurry storage tank is communicated with an inlet of the blanking channel.
3. The intelligent grouting device suitable for synchronous grouting and pressure flow linkage of the shield tunnel according to claim 2, wherein the grout storage tank is a stirring tank.
4. The intelligent grouting device suitable for synchronous grouting and pressure flow linkage of the shield tunnel according to claim 2, wherein an outlet of the grout storage box is communicated with an inlet of the blanking channel through a grout blanking barrel.
5. The intelligent grouting device suitable for synchronous grouting and pressure flow linkage of the shield tunnel according to claim 4, wherein a water inlet pipeline is connected to the slurry discharging barrel.
6. The intelligent grouting device suitable for synchronous grouting and pressure flow linkage of the shield tunnel according to claim 5, wherein a grouting feed opening switch valve is arranged on the section of the slurry feed barrel and is positioned above the access position of the water inlet pipeline.
7. The intelligent grouting device suitable for synchronous grouting and pressure flow linkage of the shield tunnel according to claim 1, wherein the piston driving device comprises a screw rod sliding block mechanism, a servo motor and a servo driver, the servo driver controls the servo motor, the servo motor drives a screw rod end of the screw rod sliding block mechanism to rotate, and a sliding block end of the screw rod sliding block mechanism drives the piston to move linearly.
8. The intelligent grouting device suitable for synchronous grouting and pressure flow linkage of the shield tunnel according to claim 1, wherein the blanking channel is provided with two outlets which are respectively communicated with inlets at two ends of the cylinder cavity.
9. The intelligent grouting device suitable for synchronous grouting and pressure flow linkage of the shield tunnel according to claim 8, wherein the slurry discharge channel is provided with two inlets which are respectively communicated with outlets at two ends of the cylinder cavity.
10. The intelligent grouting device suitable for synchronous grouting and pressure flow linkage of the shield tunnel according to claim 9, wherein each outlet is provided with a grout inlet one-way valve, and each inlet is provided with a row of grout inlet one-way valves.
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| CN114033435A (en) * | 2021-12-02 | 2022-02-11 | 北京市政建设集团有限责任公司 | Subway shield tunnel construction is with high-efficient slip casting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033435A (en) * | 2021-12-02 | 2022-02-11 | 北京市政建设集团有限责任公司 | Subway shield tunnel construction is with high-efficient slip casting device |
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