Ultra-deep vertical shaft concrete vertical pouring device and construction method thereof

Abstract

The invention provides an ultra-deep vertical shaft concrete vertical pouring device which comprises a U-shaped communicating pipe, an isolation ball, a slurry outlet pipe and a balance pressure mechanism, the isolation ball is arranged in the U-shaped communicating pipe, and the U-shaped communicating pipe comprises a first vertical pipe, a second vertical pipe and a U-shaped bottom pipe; openings in the two ends of the U-shaped bottom pipe are fixedly connected with a lower end opening of the first vertical pipe and a lower end opening of the second vertical pipe in a welded mode respectively, the U-shaped bottom pipe is wrapped at the bottom of the ultra-deep vertical shaft through concrete, the first vertical pipe and the second vertical pipe are fixed to the wall of the ultra-deep shaft through linings respectively, and a slurry outlet is formed in the lower portion of the second vertical pipe and fixed to one end of the slurry outlet pipe. The pressure balancing mechanism is arranged at the opening in the upper end of the first vertical pipe and used for balancing the pressure of concrete pumped from the opening in the upper end of the second vertical pipe. The invention further discloses a construction method of the ultra-deep vertical shaft concrete vertical pouring device. The problem of smooth transportation and pouring of concrete in the ultra-deep well is solved. The device has the advantages of simple structure and process and small occupied space.

Description

Technical Field

[0001] The present invention relates to the technical field of building curtain walls, and in particular to an ultra-deep shaft concrete vertical pouring device and a construction method. Background Art

[0002] Existing ultra-deep underground projects often use circular excavation, which takes a long time, occupies a large area, requires a lot of ground reinforcement materials, and has a significant impact on the environment. At a drop of approximately 800 meters, the coarse concrete aggregate will break due to the extremely high landing acceleration. Summary of the Invention

[0003] The present invention provides an ultra-deep vertical shaft concrete vertical pouring device and construction method, which are used to solve the problem of ultra-deep shaft concrete vertical pouring.

[0004] The slurry outlet is fixed at one end of the slurry outlet, and the other end of the slurry outlet extends to the bottom of the deep shaft. A slurry outlet is provided at the lower end of the slurry outlet, and a valve is provided at the slurry outlet close to the slurry outlet. The slurry outlet is provided at the lower end of the slurry outlet, and the pressure balancing mechanism is provided at the upper end opening of the first vertical pipe, for balancing the pressure of concrete pumped in from the upper end opening of the second vertical pipe.

[0005] Furthermore, the first vertical tube and the second vertical tube are both formed by center-aligning and welding multiple sections of vertical tubes to fix them together. The first vertical tube, the second vertical tube and the U-shaped bottom tube are all made of high-strength seamless steel tubes.

[0006] Furthermore, the balanced pressure mechanism includes a water inlet pipe, a water pump, a piston and a jack. The piston blocks the opening at the upper end of the first vertical tube. A water inlet hole is provided on the piston. One end of the water inlet pipe passes through the water inlet hole and enters the first vertical tube. The other end of the water inlet pipe is connected to the water supply pipe of the water pump. The water inlet pipe of the water pump is connected to the water source. The jack is fixed to the upper surface of the piston.

[0007] Furthermore, the diameter of the isolation ball is greater than or equal to the diameter of the slurry outlet.

[0008] Furthermore, the ultra-deep wells include deep oil resource mining wells, geophysical and geological mining wells or subway ventilation wells.

[0009] The second technical solution provided by the present invention is: A method for pouring concrete vertically in an ultra-deep shaft comprises the following steps: Step 1: Measure and locate the ultra-deep shaft and reinforce it with jet grouting within the construction area; Step 2: Excavate layer by layer according to the diameter of the ultra-deep well. During the excavation, the two vertical pipes fixed to the upper well wall are welded and fixed to the two vertical pipes fixed to the lower well wall. The two vertical pipes on the upper layer are then symmetrically lined and fixed in the ultra-deep well wall. The vertical pipes are excavated and fixed layer by layer in sequence until the bottom of the ultra-deep well is excavated. The two ends of the U-shaped bottom pipe are respectively welded and fixed to the two vertical pipes. The U-shaped bottom pipe is then enclosed in concrete at the bottom of the ultra-deep vertical well. Step 3: Place the isolation ball into the U-shaped connecting pipe, seal the piston at the upper opening of the first vertical pipe, and apply pressure to the first vertical pipe by the balancing pressure mechanism until the isolation ball is pushed by the pressure and suspended in the upper part of the second vertical pipe. Pump concrete into the upper opening of the second vertical pipe, and adjust the balancing pressure mechanism to reduce the applied pressure. As the pressure applied by the balancing pressure mechanism decreases, more and more concrete is pumped in, pressing the isolation ball downward until the pumped concrete reaches the slurry outlet. The balancing pressure mechanism no longer reduces the applied pressure. At this time, the pressure applied by the balancing pressure mechanism is balanced with the weight of the concrete pumped into the second vertical pipe, and concrete pumping stops. Step 4. Open the slurry outlet valve, and the concrete flows out of the slurry outlet at a uniform speed. At the same time, continue to pump concrete into the opening at the upper end of the second vertical pipe. The pumped concrete flows out of the slurry outlet at a uniform speed to complete the concrete pouring of the vertical pouring device. After the pouring is completed, reduce the pressure of the jack again, and stop pumping concrete. The concrete continues to flow out of the slurry outlet until the jack pressure is reduced to zero. As the concrete flows out, start the water pump to pump out the water on the other side of the isolation ball to reduce the pressure until the concrete in the second vertical pipe is emptied.

[0010] Furthermore, in step 1, the water inlet pipe is buried and a pump house is built next to the ultra-deep well.

[0011] Furthermore, in step 2, two steel bars are welded and fixed at symmetrical positions of the vertical pipe, and the two steel bars are parallel to the ultra-deep well wall. The vertical pipe is fixed to the ultra-deep well wall with concrete lining from the position close to the ultra-deep well wall to the position of the two steel bars. A groove is dug at the bottom of the ultra-deep well, and the U-shaped bottom pipe is placed in the groove and fixed to the bottom of the ultra-deep well with concrete encapsulation.

[0012] Furthermore, in step 3, the balancing pressure mechanism is installed and the pressure-increasing and pressure-reducing operations are performed. The piston seals the opening at the upper end of the first vertical pipe, and one end of the water inlet pipe passes through the water inlet hole into the first vertical pipe. The other end of the water inlet pipe is connected to the water supply pipe of the water pump, and the water inlet pipe of the water pump is connected to the water source. The water pump is started to pump water into the first vertical pipe. The water pressure generated by the pumped water pushes the isolation ball to move until the isolation ball is pushed by the water pressure to suspend on the upper part of the second vertical pipe. At this time, the horizontal planes on both sides below the isolation ball are at the same height. Concrete is pumped into the opening at the upper end of the second vertical pipe, and the jack is fixed on the piston. The isolation ball moves upward again. When the isolation ball stops moving, the pressure of the jack is reduced. As the pressure of the jack decreases, more and more concrete is pumped in to press the isolation ball downward. At the same time, as the concrete moves downward, the water on the other side of the isolation ball flows out from the water inlet as the concrete moves downward until the pumped concrete reaches the slurry outlet. The pressure of the jack no longer decreases, and the pumping of concrete stops.

[0013] Furthermore, in step 4, after pouring is completed, the pressure of the jack is reduced again, and no more concrete is pumped in. The concrete continues to flow out from the slurry outlet until the jack pressure is reduced to zero. Then, as the concrete flows out, the water pump is started to pump out the water on the other side of the isolation ball to reduce the pressure until the concrete in the second vertical pipe is emptied.

[0014] The present invention utilizes the principle of U-shaped pipe pressure communication to control the pressure on one side of the vertical pouring device, allowing concrete on the other side of the device to be uniformly transported from a height to the bottom of an ultra-deep well. This solves the problem of vertical concrete transport and pouring in deep wells. It has the advantages of a simple structure, simple process, and small space requirements, making it particularly suitable for projects with limited space and vertical excavation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a super-deep shaft concrete vertical pouring device according to the present invention; Figure 2 This is a top view of a vertical concrete pouring device for an ultra-deep shaft according to the present invention; Figure 3 It is attached Figure 2 Enlarged view of part A.

[0016] Description of symbols in the accompanying drawings: 1. U-shaped connecting pipe, 2. Isolation ball, 3. Slurry outlet pipe, 4. First vertical pipe, 5. Second vertical pipe, 6. U-shaped bottom pipe 7. Slurry outlet, 8. Water inlet pipe, 9. Water pump, 10. Piston, 11. Jack, 12. Water source, 13. Ultra-deep well bottom 14. Ultra-deep well lining, 15. Steel bars. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0019] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0020] In the description of this patent, unless otherwise expressly specified or limited, when the term "connection" or the like appears to indicate a connection relationship between components, the term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two components or an interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in this invention can be understood according to the specific circumstances.

[0021] A device for vertically pouring concrete into an ultra-deep shaft, such as Figures 1 to 2As shown, it includes a U-shaped connecting pipe 1, an isolation ball 2, a slurry discharge pipe 3 and a balancing pressure mechanism. The isolation ball 2 is arranged in the U-shaped connecting pipe 1. The U-shaped connecting pipe 1 includes a first vertical pipe 4, a second vertical pipe 5 and a U-shaped bottom pipe 6. The openings at both ends of the U-shaped bottom pipe 6 are welded and fixedly connected to the lower end openings of the first vertical pipe 4 and the lower end openings of the second vertical pipe 5 respectively. The U-shaped bottom pipe 6 is concrete-encapsulated at the bottom 13 of the ultra-deep vertical shaft. The first vertical pipe 4 and the second vertical pipe 5 are respectively fixed to the ultra-deep well wall 14 by lining. The first vertical pipe 4, the second vertical pipe 5 and the U-shaped bottom pipe 6 are interconnected. A slurry outlet 7 is arranged at the lower part of the second vertical pipe 5. The slurry outlet 7 is welded and fixed at one end of the slurry outlet pipe 3, and the other end of the slurry outlet pipe 3 extends to the bottom of the deep vertical shaft. A valve is arranged close to the slurry outlet of the slurry outlet pipe 3. The balancing pressure mechanism is arranged at the upper end opening of the first vertical pipe 4, for balancing the pressure of concrete pumped in from the upper end opening of the second vertical pipe 5.

[0022] Currently, ultra-deep well construction faces many problems, among which the transportation of concrete into ultra-deep wells is a problem that needs to be solved. Transporting concrete in ultra-deep wells not only faces the problem of the well depth, which makes it difficult to transport concrete, but also the problem that due to the depth of the well, the concrete will fall to the bottom of the well and break due to accelerated falling, resulting in the quality of the concrete transported to the bottom of the well not meeting the requirements and being unusable. Therefore, there is a need for a device that can smoothly transport concrete to the bottom of the well. The present invention utilizes the principle of balanced pressure on both sides of a U-shaped communicating vessel, and sets a U-shaped communicating pipe 1 in the ultra-deep well to smoothly transport and pour concrete to the bottom of the deep well. The balanced pressure mechanism set on the side of the first vertical pipe 4 of the U-shaped communicating pipe 1 controls the pressure of the first vertical pipe 4 to be equal to the concrete pressure in the second vertical pipe 5, and then reduces the pressure. At the same time, the valve is opened to allow the concrete to flow out from the slurry outlet at the bottom of the second vertical pipe 5, thereby achieving the purpose of smoothly transporting and pouring concrete to the bottom 13 of the ultra-deep well. It has the advantages of simple structure, simple process, and small space occupation, and is particularly suitable for projects with small space and vertical excavation.

[0023] Further, if Figures 1 to 2 As shown, the first and second vertical pipes 4 and 5 are both constructed by welding multiple vertical pipe sections with their centers aligned. This is done to accommodate the multi-section rotating construction of ultra-deep wells and to avoid the difficulty of hoisting the entire U-shaped connecting pipe 1 to the well bottom. This also accommodates the process of pre-buried vertical pipe sections in each section of ultra-deep well construction. Therefore, the first and second vertical pipes 4 and 5 are both constructed by welding multiple vertical pipe sections with their centers aligned.

[0024] Further, if Figures 1 to 2 As shown, the first vertical pipe 4, the second vertical pipe 5, and the U-shaped bottom pipe 6 are all high-strength seamless steel pipes. Considering the high pressure inside the U-shaped connecting pipe 1 caused by the depth of the ultra-deep well and the need for sealing and leak-proofing of concrete during transportation, the first vertical pipe 4, the second vertical pipe 5, and the U-shaped bottom pipe 6 are all high-strength seamless steel pipes.

[0025] Further, if Figures 1 to 2 As shown, the balancing pressure mechanism includes a water inlet pipe 8, a water pump 9, a piston 10 and a jack 11. The piston 10 blocks the opening at the upper end of the first vertical pipe 4. A water inlet hole is provided on the piston 10. One end of the water inlet pipe 8 passes through the water inlet hole and enters the first vertical pipe 4. The other end of the water inlet pipe 8 is connected to the water delivery pipe of the water pump 9. The water inlet pipe of the water pump 9 is connected to the water source 12. The jack 11 is fixed to the upper surface of the piston. Utilizing the principle of pressure control by U-shaped tube connection, the pressure control on the side of the first vertical pipe 5 in the smooth transportation of poured concrete in ultra-deep wells is implemented by the balancing pressure mechanism. The balancing pressure mechanism can adopt different pressurization structures. In this embodiment, the balancing pressure mechanism adopts a structure of water pressure and jack pressure regulation.

[0026] Further, if Figures 1 to 2 As shown, the diameter of the isolation ball 2 is greater than or equal to the diameter of the pulp outlet. In order to prevent the isolation ball 2 from flowing out of the pulp outlet, the diameter of the isolation ball 2 is greater than or equal to the diameter of the pulp outlet.

[0027] Also disclosed is a pouring construction method of an ultra-deep vertical shaft concrete pouring device, comprising the following steps: Step 1: Measure and locate the ultra-deep shaft and reinforce it with jet grouting within the construction area; Step 2: Excavate layer by layer according to the diameter of the ultra-deep well. During the excavation, the two vertical pipes fixed to the upper well wall are welded and fixed to the two vertical pipes fixed to the lower well wall. The two vertical pipes on the upper layer are then symmetrically lined and fixed in the ultra-deep well wall. The vertical pipes are excavated and fixed layer by layer in sequence until the bottom of the ultra-deep well is excavated. The two ends of the U-shaped bottom pipe are respectively welded and fixed to the two vertical pipes. The U-shaped bottom pipe is then enclosed in concrete at the bottom of the ultra-deep vertical well. Step 3: Place the isolation ball into the U-shaped connecting pipe, seal the piston at the upper opening of the first vertical pipe, and apply pressure to the first vertical pipe by the balancing pressure mechanism until the isolation ball is pushed by the pressure and suspended in the upper part of the second vertical pipe. Pump concrete into the upper opening of the second vertical pipe, and adjust the balancing pressure mechanism to reduce the applied pressure. As the pressure applied by the balancing pressure mechanism decreases, more and more concrete is pumped in, pressing the isolation ball downward until the pumped concrete reaches the slurry outlet. The balancing pressure mechanism no longer reduces the applied pressure. At this time, the pressure applied by the balancing pressure mechanism is balanced with the weight of the concrete pumped into the second vertical pipe, and concrete pumping stops. Step 4: Open the slurry outlet valve, and the concrete flows out of the slurry outlet at a uniform speed. At the same time, continue to pump concrete into the upper opening of the second vertical pipe. The pumped concrete flows out of the slurry outlet at a uniform speed, completing the concrete pouring of the vertical pouring device.

[0028] Furthermore, in step 1, the water inlet pipe is buried and a pump house is built next to the ultra-deep well. In this embodiment, the balancing pressure mechanism adopts a structure adjusted by water pressure and a jack. In order to adapt the balancing pressure to the structure adjusted by water pressure and a jack, in step 1, the water inlet pipe is buried and a pump house is built.

[0029] Furthermore, in step 2, two steel bars are welded and fixed to the vertical pipe at symmetrical positions. The two steel bars are parallel to the ultra-deep well wall. The vertical pipe is fixed to the ultra-deep well wall with concrete lining from the position of the two steel bars 15 close to the ultra-deep well wall. A groove is dug at the bottom of the ultra-deep well, and the U-shaped bottom pipe is placed in the groove and encapsulated with concrete to be fixed to the bottom of the ultra-deep well. The first vertical pipe and the second vertical pipe are both welded together by vertical pipes. In the ultra-deep well excavation process, each 2 meters is a section. In each section of excavation, a 2-meter vertical pipe is fixed at symmetrical positions on the ultra-deep well wall. Two steel bars are welded and fixed to the vertical pipe at symmetrical positions. They are used to hold the concrete when the vertical pipe is lined in the ultra-deep well wall, making the lining more stable. The symmetrical positions of the two steel bars are generally at 2 / 3 of the vertical pipe diameter, that is, 2 / 3 of the volume of the vertical pipe is buried in the ultra-deep well wall.

[0030] Furthermore, in step 3, the balancing pressure mechanism is installed and the pressure-increasing and pressure-reducing operations are performed. The piston seals the opening at the upper end of the first vertical pipe, and one end of the water inlet pipe passes through the water inlet hole into the first vertical pipe. The other end of the water inlet pipe is connected to the water supply pipe of the water pump, and the water inlet pipe of the water pump is connected to the water source. The water pump is started to pump water into the first vertical pipe. The water pressure generated by the pumped water pushes the isolation ball to move until the isolation ball is pushed by the water pressure to suspend on the upper part of the second vertical pipe. At this time, the horizontal planes on both sides below the isolation ball are at the same height. Concrete is pumped into the opening at the upper end of the second vertical pipe, and the jack is fixed on the piston. The isolation ball moves upward again. When the isolation ball stops moving, the pressure of the jack is reduced. As the pressure of the jack decreases, more and more concrete is pumped in to press the isolation ball downward. At the same time, as the concrete moves downward, the water on the other side of the isolation ball flows out from the water inlet as the concrete moves downward until the pumped concrete reaches the slurry outlet. The pressure of the jack no longer decreases, and the pumping of concrete stops. In this embodiment, the pressure balancing mechanism utilizes the water pressure and the jack provided on the side of the first vertical pipe 4 of the U-shaped connecting pipe 1 to perform pressurization, decompression and pressure control operations for the smooth delivery and pouring of concrete.

[0031] After pouring is complete, the jack pressure is reduced again, and concrete is no longer pumped in. Concrete continues to flow out of the slurry outlet until the jack pressure drops to zero. As the concrete flows out, the water pump is activated to pump out the water on the other side of the isolation ball to reduce the pressure until the concrete in the second vertical pipe is empty. Using the balanced pressure mechanism of water pressure and the jack, after the smooth delivery and pouring of concrete is completed, the jack pressure is reduced to empty the concrete remaining in the second vertical pipe 5 of the U-shaped connecting pipe 1.

[0032] It should be noted that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that various modifications, equivalent substitutions, and variations may be made to the present invention. However, as long as these modifications do not depart from the spirit of the present invention, they are intended to be within the scope of protection of the present invention. Furthermore, certain terms used in the specification and claims of this application are not intended to be limiting and are provided solely for ease of description.

Claims

1. A device for vertically pouring concrete in an ultra-deep shaft, characterized in that: The invention comprises a U-shaped connecting pipe (1), an isolating ball (2), a slurry outlet pipe (3) and a balancing pressure mechanism, wherein the isolating ball (2) is arranged in the U-shaped connecting pipe (1), the U-shaped connecting pipe (1) comprises a first vertical pipe (4), a second vertical pipe (5) and a U-shaped bottom pipe (6), the openings at both ends of the U-shaped bottom pipe (6) are respectively welded and fixedly connected to the lower end openings of the first vertical pipe (4) and the lower end openings of the second vertical pipe (5), the U-shaped bottom pipe (6) is concrete-encapsulated at the bottom (13) of the ultra-deep vertical shaft, the first vertical pipe (4) and the second vertical pipe (5) are The pipes (5) are fixed to the wall (14) of the ultra-deep well by lining, the first vertical pipe (4), the second vertical pipe (5) and the U-shaped bottom pipe (6) are interconnected, a slurry outlet (7) is arranged at the lower part of the second vertical pipe (5), one end of the slurry outlet pipe (3) is welded and fixed to the slurry outlet (7), the other end of the slurry outlet pipe (3) extends to the bottom of the deep vertical well, a valve is arranged close to the slurry outlet of the slurry outlet pipe (3), and the balancing pressure mechanism is arranged at the upper end opening of the first vertical pipe (4) for balancing the pressure of concrete pumped in from the upper end opening of the second vertical pipe (5).

2. The ultra-deep shaft concrete vertical pouring device according to claim 1 is characterized in that: The first vertical tube (4) and the second vertical tube (5) are both formed by welding a plurality of vertical tube sections in a centrally aligned manner; the first vertical tube (4), the second vertical tube (5) and the U-shaped bottom tube (6) are all high-strength seamless steel tubes.

3. The ultra-deep shaft concrete vertical pouring device according to claim 1 is characterized in that: The balanced pressure mechanism comprises a water inlet pipe (8), a water pump (9), a piston (10) and a jack (11); the piston (10) blocks the upper opening of the first vertical pipe (4); a water inlet hole is arranged on the piston (10); one end of the water inlet pipe (8) passes through the water inlet hole and enters the first vertical pipe (4); the other end of the water inlet pipe (8) is connected to a water delivery pipe of the water pump (9); the water inlet pipe of the water pump (9) is connected to a water source (12); and the jack (11) is fixed to the upper surface of the piston.

4. The ultra-deep shaft concrete vertical pouring device according to claim 1 is characterized in that: The diameter of the isolation ball (2) is greater than or equal to the diameter of the slurry outlet.

5. The ultra-deep shaft concrete vertical pouring device according to claim 1 is characterized in that: The ultra-deep wells include deep oil layer resource exploitation wells, geophysical and geological exploitation wells or subway ventilation wells.

6. A method for pouring concrete vertically in an ultra-deep shaft according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Measure and locate the ultra-deep shaft and reinforce it with jet grouting within the construction scope; Step 2, excavate layer by layer according to the diameter of the ultra-deep well. During the excavation, two vertical pipes fixed to the upper well wall are welded and fixedly connected with two vertical pipes fixed to the lower well wall, and then the two vertical pipes on the upper layer are symmetrically lined and fixed in the well wall of the ultra-deep well. The vertical pipes are excavated and welded layer by layer in sequence until the bottom of the ultra-deep well is excavated. The two ends of the U-shaped bottom pipe are respectively welded and fixed to the two vertical pipes, and then the U-shaped bottom pipe is encapsulated with concrete at the bottom of the ultra-deep vertical well; Step 3, put the isolation ball into the U-shaped connecting pipe, seal the piston at the opening of the upper end of the first vertical pipe, and the balancing pressure mechanism applies pressure to the first vertical pipe until the isolation ball is pushed by the pressure to float on the upper part of the second vertical pipe, and concrete is pumped into the upper end of the second vertical pipe. The balancing pressure mechanism adjusts to reduce the applied pressure. As the pressure applied by the balancing pressure mechanism decreases, more and more concrete is pumped in to press the isolation ball downward until the pumped concrete reaches the slurry outlet. The balancing pressure mechanism no longer reduces the applied pressure. At this time, the pressure applied by the balancing pressure mechanism is balanced with the weight of the concrete pumped into the second vertical pipe, and the concrete pumping stops; Step 4, open the slurry outlet valve, the concrete flows out of the slurry outlet at a uniform speed, and at the same time continue to pump concrete from the upper end opening of the second vertical pipe, the pumped concrete flows out of the slurry outlet at a uniform speed, completing the concrete pouring of the vertical pouring device.

7. The method for pouring concrete vertically in the ultra-deep shaft according to claim 6, characterized in that: In step 1, the water inlet pipe is buried and a pump house is built next to the ultra-deep well.

8. The method for pouring concrete vertically for ultra-deep shafts according to claim 7, characterized in that: In step 2, two steel bars are welded and fixed at symmetrical positions of the vertical pipe, and the two steel bars are parallel to the ultra-deep well wall. The vertical pipe is fixed to the ultra-deep well wall with concrete lining from the position close to the ultra-deep well wall to the position of the two steel bars. A groove is dug at the bottom of the ultra-deep well, and the U-shaped bottom pipe is placed in the groove and fixed to the bottom of the ultra-deep well with concrete encapsulation.

9. The method for pouring concrete vertically for ultra-deep shafts according to claim 8, characterized in that: Step 3: Installation of the balancing pressure mechanism and pressurization and decompression operation. The piston seals the opening at the upper end of the first vertical pipe. One end of the water inlet pipe passes through the water inlet hole into the first vertical pipe. The other end of the water inlet pipe is connected to the water pump water delivery pipe. The water pump water inlet pipe is connected to the water source. The water pump is started to pump water into the first vertical pipe. The water pressure generated by the pumped water pushes the isolation ball to move until the isolation ball is pushed by the water pressure to suspend on the upper part of the second vertical pipe. At this time, the horizontal planes on both sides below the isolation ball are at the same height. Concrete is pumped into the opening at the upper end of the second vertical pipe, and the jack is fixed on the piston. The isolation ball moves upward again. When the isolation ball stops moving, the pressure of the jack is reduced. As the pressure of the jack decreases, more and more concrete is pumped in to press the isolation ball downward. At the same time, as the concrete moves downward, the water on the other side of the isolation ball flows out from the water inlet as the concrete moves downward until the pumped concrete reaches the slurry outlet. The pressure of the jack no longer decreases, and the pumping of concrete stops.

10. The method for pouring concrete vertically for ultra-deep shafts according to claim 9, characterized in that: In step 4, after pouring is completed, the pressure of the jack is reduced again, and no more concrete is pumped in. The concrete continues to flow out from the slurry outlet until the jack pressure is reduced to zero. Then, as the concrete flows out, the water pump is started to pump out the water on the other side of the isolation ball to reduce the pressure until the concrete in the second vertical pipe is emptied.

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