CN114991804A - Bionic small intestine silt and slag preventing device for slurry balance shield - Google Patents
Bionic small intestine silt and slag preventing device for slurry balance shield Download PDFInfo
- Publication number
- CN114991804A CN114991804A CN202210871976.0A CN202210871976A CN114991804A CN 114991804 A CN114991804 A CN 114991804A CN 202210871976 A CN202210871976 A CN 202210871976A CN 114991804 A CN114991804 A CN 114991804A
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- bionic
- small intestine
- pipe
- slurry
- balance shield
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
Abstract
The invention relates to the technical field of shield tunneling machines, in particular to a small intestine bionic silt-proof slag-discharging device for a slurry balance shield, which comprises a mud-discharging pipe; the small intestine bionic device is communicated between the first section and the tail section of the sludge discharge pipe and comprises a plurality of bionic units which are sequentially connected, each bionic unit comprises an elastic pipe and a hard pipe wrapping the elastic pipe, and the hard pipe is provided with a space for accommodating the expansion of the elastic pipe; the power device is arranged at the first section of the sludge discharge pipe and pumps high-density slurry with pulse pressure to the small intestine bionic device; the invention is provided with the power device and the small intestine bionic device, the power device can provide pulse power for the small intestine bionic device, the periodic creeping of the slurry is realized, and the problem of sludge discharge pipeline blockage caused by the precipitation and solidification of the slurry in the transportation process is effectively prevented.
Description
Technical Field
The invention relates to the technical field of shield tunneling machines, in particular to a small intestine bionic silt-proof slag-discharging device for a slurry balance shield.
Background
The shield machine occupies an important position in the construction of urban underground space, and is widely applied to the tunnel excavation process under relatively homogeneous geological conditions except for hard rocks. The shield machine can not be influenced by conditions such as ground traffic, river channel shipping season and the like, realizes standardization, intellectualization, mechanization, systematization and construction transportation control informatization, and has the characteristics of high tunneling speed and high efficiency.
The slurry balance type shield machine is widely applied, and the working principle of the slurry balance type shield machine is that slurry is added into a cutter head sealed cabin to balance the water and soil pressure of an excavation surface, then high-density slurry is discharged through a sludge discharge pipe, and excavated residue and soil are taken away. And the discharge speed of the mud greatly limits the working efficiency of the mud water balance shield machine.
The mud pipe is along with the excavation of tunnel constantly prolongs, and the sediment phenomenon appears in the inevitable high density mud that mixes the dregs in long distance pipeline transportation, and mud is long in the past with very big probability jam mud pipe, restriction muddy water balance shield constructs the work efficiency of machine.
Disclosure of Invention
The invention aims to provide a small intestine bionic anti-silt and slag-discharging device for a slurry balance shield, which aims to solve the problem that a sludge discharge pipe is blocked due to the precipitation phenomenon of high-density slurry mixed with dregs in long-distance pipeline transportation. In order to achieve the above object, the present invention is achieved by the following technical solutions:
the invention provides a bionic small intestine silt-proof slag-discharging device for a slurry balance shield, which comprises:
a sludge discharge pipe;
the small intestine bionic device is communicated between the first section and the tail section of the sludge discharge pipe and comprises a plurality of bionic units which are sequentially connected, each bionic unit comprises an elastic pipe and a hard pipe wrapping the elastic pipe, and the hard pipe is provided with a space for accommodating the expansion of the elastic pipe;
and the power device is arranged at the first section of the sludge discharge pipe and pumps high-density slurry with pulse pressure to the small intestine bionic device.
As a further technical scheme, the inner space of the hard pipe is expanded and shrunk along the axis of the hard pipe, and the elastic pipe is matched with the hard pipe after being expanded.
As a further technical scheme, the slurry mass transfer device further comprises an additive conveying pipe which is used for conveying an additive for improving the mass transfer characteristic of slurry into the sludge discharge pipe.
As a further technical scheme, a plurality of bionic units which are sequentially connected form a group, and the power device is arranged between the groups.
As a further technical scheme, a manual pressure control valve is arranged at the tail section of the sludge discharge pipe.
As a further technical scheme, the pressure control valve is connected with a safety valve in parallel.
As a further technical scheme, the adjacent bionic units are butted through sealing flanges.
As a further technical scheme, the power device is provided with a controller, and the controller is used for controlling the power device to provide the pulse pumping pressure.
As a further technical scheme, a pressure sensor is arranged at the tail section of the sludge discharge pipe and is connected with the controller.
As a further technical scheme, the hard tube is fixedly arranged.
The beneficial effects of the invention are as follows:
(1) the power device is arranged at the first section of the sludge discharge pipe, namely the front part of the small intestine bionic device, and can provide pulse power for the small intestine bionic device, so that the periodic pulse of the slurry in the small intestine bionic device is realized, the periodic creeping of the slurry is further realized, the problem of sludge discharge pipe blockage caused by precipitation and solidification of the slurry in the transportation process is effectively prevented, the transportation speed of the slurry with slag is improved, and the power device is suitable for long-distance transportation of high-density slurry.
(2) Each bionic unit of the bionic robot consists of a section of elastic tube with certain elasticity and a hard tube wrapping the elastic tube, the elastic tube with elasticity generates periodic peristalsis due to the flowing characteristic of slurry in the elastic tube, and the hard tube which is difficult to stretch and deform is sleeved outside each elastic tube and can limit the maximum peristalsis amplitude of the elastic tube.
(3) The additive conveying pipe is arranged on the sludge discharge pipe and is used for conveying additives for improving the mass transfer characteristic of slurry into the sludge discharge pipe. The additive delivery pipe can deliver the additive prepared on the ground to the front end of the mud discharge pipe to be mixed with mud residue, and after mixing, the mass transfer characteristic of the mud is improved, the lubricity of the mud is improved, the consistency of the mud is adjusted, and the transmission efficiency is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention. It will be further appreciated that the drawings are for simplicity and clarity and have not necessarily been drawn to scale. The invention will now be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
FIG. 1 is a schematic structural view of a pipeline clogging prevention device in an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a small intestine biomimetic device in an embodiment of the invention.
In the figure: 1. a first valve; 2. a second valve; 3. a mud conveying pipe; 4. an additive delivery pipe; 5. a sludge discharge pipe; 6. a power plant; 7. a small intestine biomimetic device; 8. a pressure sensor; 9. a controller; 10. a safety valve; 11. a pressure control valve; 12. a muddy water treatment tank; 13. a third valve; 14. a rigid tube; 15. sealing the flange; 16. an elastic tube; 17. a base; 18. a support leg; 19. a fixing device; 20. and (4) connecting the pipes.
Detailed Description
The technical solutions in the exemplary embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The shield machine provided with the device is mainly suitable for a muddy clay layer and is also suitable for a tunnel with large stratum water content and a water body above the stratum. The tunneling process of the shield tunneling machine is that muddy water is injected into a sealed compartment of the shield tunneling surface, and the stability of the tunneling surface is ensured through muddy water pressurization and external pressure balance. The mud residue excavated by the cutter head enters the mud water bin during the tunneling process of the shield tunneling machine, the mud residue is stirred by the stirring device, the stirred high-concentration mud is transported to the mud water treatment box 12 on the ground through the mud discharge pipe 5, the mud water is separated in the mud water treatment box, then the separated low-density mud water is injected from the upper part of the mud water bin through the mud feeding pipe 3, the mud is continuously discharged for recycling, the first valve 1 is arranged at the end part of the mud feeding pipe 3 communicated with the mud water bin, the third valve 13 is arranged at the end part of the mud discharge pipe 5 communicated with the mud water bin, and the first valve 1 and the third valve 13 are both switch valves for controlling the circulation of the mud water, as shown in fig. 1.
In order to avoid sediment of high density mud in the mud pipe 5, block up pipeline, as shown in fig. 1 and fig. 2, this embodiment provides a bionic silt-proof slag removal device of small intestine for slurry balance shield, includes:
a sludge discharge pipe 5;
the small intestine bionic device 7 is communicated between the first section and the tail section of the sludge discharge pipe 5 and comprises a plurality of bionic units which are sequentially connected, each bionic unit comprises an elastic pipe 16 and a hard pipe 14 wrapping the elastic pipe 16, and the hard pipe 14 is provided with a space for accommodating the expansion of the elastic pipe 16;
and the power device 6 is arranged at the first section of the sludge discharge pipe 5 and pumps high-density slurry with pulse pressure to the small intestine bionic device 7.
The power device sets up in the first section of mud pipe 5, sets up in the bionic device of small intestine 7 front portion promptly, can provide pulse power for the bionic device of small intestine, realizes the periodic pulse of mud in the bionic device of small intestine 7, and then realizes the periodic wriggling of mud, has effectively prevented mud deposit the row's mud pipe blockage's that concreties and lead to problem in the transportation, has improved the transport speed of taking sediment mud, is fit for the long distance transportation of high density mud.
The small intestine bionic device 7 of the embodiment utilizes the bionics principle to strengthen the mixing characteristic and the mass transfer characteristic of the high-viscosity liquid, realizes radial mixing of the high-viscosity liquid, strengthens the mass transfer effect, and eliminates the problems of mixing dead zones, mixture deposition and the like. The small intestine bionic device 7 is formed by connecting a plurality of bionic units in series, and the flow characteristic of slurry in the small intestine bionic device 7 is provided by the front end power device 6 so as to realize the pulse flow of the slurry. The power plant 6 is provided with a controller 9, by means of which controller 9 the power plant 6 is controlled to provide a pulsating pumping pressure.
The power device 6 in this embodiment is a water pump, and the rotation speed of the water pump is adjusted by the controller 9 to realize pulse pumping. During control, the rotating speed of the water pump is in an interval, the sludge discharge can still be realized at the lowest rotating speed of the water pump, but the elastic pipe does not expand at the moment, the elastic pipe expands rapidly along with the rapid increase of the rotating speed until the rotating speed reaches the interval upper limit, and then the rotating speed is reduced to the interval lower limit, which is a period and continues to operate periodically.
As shown in fig. 2, each bionic unit is composed of a section of elastic tube 16 with certain elasticity and a hard tube 14 wrapping the elastic tube 16, and the flow characteristic of the slurry in the elastic tube 16 enables the elastic tube to generate periodic peristalsis; each elastic tube 16 is sleeved with a hard tube 14 which is not easy to stretch and deform and can limit the maximum peristalsis amplitude of the elastic tube 16.
The middle of the inner space of the hard pipe 14 is bulged and reduced along the pipe axis, the hard pipe is spindle-shaped and does not have tips at two ends, the elastic pipe 16 is matched with the hard pipe after being expanded, the elastic pipe 16 in the embodiment adopts a pipeline made of high-elasticity rubber, the pipe diameter of the elastic pipe is matched with that of the mud pipe 5 in the contraction state, and the diameter ratio of the elastic pipe 16 to the hard pipe 14 in the contraction state is 1: 1.5, the diameter of the rigid tube 14 refers to the diameter at the intermediate drum.
In order to facilitate the connection of adjacent bionic units, the two ends of the elastic tube 16 are respectively connected with a section of hard connecting tube 20, and it can be understood that the elastic tube of the bionic unit directly connected with the sludge discharge pipe 5 can be directly connected with the elastic tube without arranging the connecting tube 20. The rigid pipe in this embodiment is composed of two parts, and is buckled by bolts when in use. When being buckled, the elastic pipe is buckled on the connecting pipe 20 or the sludge discharge pipe 5 at the two ends of the elastic pipe.
The adjacent bionic units are in butt joint through the sealing flanges 15, the sealing flanges 15 are connected to the connecting pipe 20, slurry circulation is achieved by continuously increasing the length of a pipeline in the tunneling process of the shield tunneling machine, the sealing flanges 15 are convenient to load and detach the bionic units, the bionic units can be recycled repeatedly, and the problem is well solved.
Each section of the elastic pipe 16 made of high-elasticity rubber elastically contracts and expands along with muddy water transportation within the limit of the hard pipe 14, so that the mud in the pipeline can still be fully stirred, the problems of pipeline blockage and reduction of the tunneling efficiency of the shield tunneling machine due to the fact that the mud is precipitated in the transportation process are effectively solved, and meanwhile, the risk of the increase of the tunneling pause cost of the shield tunneling machine due to the fact that the pipeline is blocked and slag is difficult to discharge is reduced.
The hard tube 14 is fixedly arranged, and the pumping pressure provided by the power device 6 is impulsive, which may cause the small intestine bionic device 7 to twist and damage the small intestine bionic device, so that the hard tube 14 is fixed. As shown in fig. 2, each hard pipe 14 is fixed on the side wall slightly below the shield tunneling machine through two fixing devices 19, each fixing device 19 comprises a base 17 and a support leg 18, and a bolt is arranged on the base 17.
The anti-clogging slag discharging device also comprises an additive conveying pipe 4 which is used for conveying an additive for improving the mass transfer characteristic of the slurry into a sludge discharging pipe 5. In this embodiment, the additive delivery pipe 4 is communicated with the first section of the sludge discharge pipe 5, the additive delivery pipe is communicated between the small intestine bionic device 7 and the power device 6, and the additive delivery pipe 4 is provided with a second valve 2 which is a switch valve.
The additive delivery pipe 4 can deliver the additive prepared on the ground to the front end of the sludge discharge pipe 5, and the additive is mixed with the sludge, so that the mass transfer characteristic of the sludge is improved and the transmission efficiency is improved after the additive is mixed, wherein the additive is substances such as foam, expansive soil and the like, the lubricity of the sludge is improved, the consistency of the sludge is adjusted, the effect is similar to that of digestive juice in small intestines, and the transmission is facilitated.
A plurality of bionic units which are connected in sequence form a group, and a power device 6 is arranged between the groups. Along with the tunneling of the shield tunneling machine, the small intestine bionic device is prolonged, and when the small intestine bionic device is prolonged for a certain distance, the requirement cannot be met only by one power device 6, so that the power devices are additionally arranged between groups, a plurality of power devices work simultaneously, the requirement can be completely met, and in the embodiment, one power device can be additionally arranged every 200 meters.
The tail section of mud pipe 5 is equipped with pressure sensor 8, and pressure sensor 8 is connected with controller 9, can intraductal mud pressure of real-time supervision, and pressure sensor 8 and the external controller 9 of power device 6, pressure data transmit to controller 9, according to the power size of pressure size control power device 6, prevent the system collapse that too big or the undersize of pressure leads to guarantee normal transportation.
The shield machine mud feeding pipe 3 and the mud discharging pipe 5 are both provided with a switch valve, the switch valve of the mud discharging pipe 5 is a third valve 13, and the mud feeding amount and the mud discharging amount are adjusted in real time according to the tunneling speed, so that the stability of the excavation surface is ensured. The tail section and the first section of the sludge discharge pipe 5 are rigid pipelines with certain lengths, the first section is communicated with a slurry cabin of the shield tunneling machine, the third valve 13 is arranged on the first section, and the tail section is communicated with the slurry treatment box 12.
The tail section of mud pipe 5 is equipped with manual accuse and presses valve 11, and accuse is pressed valve 11 and is connected in parallel has safety valve 10, and two valve place pipelines all communicate muddy water and handle case 12, in time controls pressure regulating valve 11 aperture size according to the intraductal pressure, prevent that pressure from destroying the pipeline excessively, and when intraductal pressure was greater than the pressure that safety valve 10 set up, safety valve 10 opened automatically, and muddy water flows into muddy water through safety valve 10 and handles case 12.
In addition, when the power device can not work due to the fact that the controller can not work, the pulse effect can be achieved by manually opening and closing the pressure control valve. It will be appreciated that the manual operation of the pressure control valve to achieve a pulsing effect is relatively awkward with respect to the cooperation of the controller and the power plant, but can be temporarily used in an emergency.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (10)
1. The utility model provides a bionical silt prevention of small intestine is arranged in slurry balance shield and is arranged sediment device which characterized in that includes:
a sludge discharge pipe;
the small intestine bionic device is communicated between the first section and the tail section of the sludge discharge pipe and comprises a plurality of bionic units which are sequentially connected, each bionic unit comprises an elastic pipe and a hard pipe wrapping the elastic pipe, and the hard pipe is provided with a space for accommodating the expansion of the elastic pipe;
and the power device is arranged at the first section of the sludge discharge pipe and pumps high-density slurry with pulse pressure to the small intestine bionic device.
2. The bionic sludge-preventing and slag-discharging device for the small intestine of the slurry balance shield as claimed in claim 1, wherein the inner space of the hard tube is expanded and contracted along the tube axis, and the elastic tube is matched with the hard tube after being expanded.
3. The small intestine bionic anti-sludge and slag-discharging device for the slurry balance shield as recited in claim 1, further comprising an additive conveying pipe for conveying an additive for improving the mass transfer characteristic of slurry into the sludge discharge pipe.
4. The bionic sludge-preventing and slag-discharging device for the small intestine of the slurry balance shield as claimed in claim 1, wherein a plurality of bionic units which are sequentially connected form a group, and the power device is arranged between the groups.
5. The bionic small intestine silt-preventing and slag-discharging device for the slurry balance shield as claimed in claim 1, wherein the tail section of the mud discharging pipe is provided with a manual pressure control valve.
6. The small intestine bionic anti-silting and deslagging device for the slurry balance shield according to claim 5, wherein the pressure control valve is connected with a safety valve in parallel.
7. The small intestine bionic silt-proof and slag-discharging device for the slurry balance shield as claimed in claim 1, wherein the adjacent bionic units are butted through a sealing flange.
8. The bionic small intestine silt prevention and slag removal device for the slurry balance shield as claimed in claim 1, wherein the power device is provided with a controller, and the controller controls the power device to provide the pulse pumping pressure.
9. The bionic sludge-preventing and slag-discharging device for the small intestine of the slurry balance shield as claimed in claim 8, wherein the tail section of the sludge discharge pipe is provided with a pressure sensor, and the pressure sensor is connected with the controller.
10. The bionic sludge-preventing and slag-discharging device for the small intestine of the slurry balance shield as claimed in claim 1, wherein the hard pipe is fixedly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210871976.0A CN114991804A (en) | 2022-07-19 | 2022-07-19 | Bionic small intestine silt and slag preventing device for slurry balance shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210871976.0A CN114991804A (en) | 2022-07-19 | 2022-07-19 | Bionic small intestine silt and slag preventing device for slurry balance shield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114991804A true CN114991804A (en) | 2022-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210871976.0A Pending CN114991804A (en) | 2022-07-19 | 2022-07-19 | Bionic small intestine silt and slag preventing device for slurry balance shield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114991804A (en) |
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2022
- 2022-07-19 CN CN202210871976.0A patent/CN114991804A/en active Pending
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