A slurry balance anti-well drilling machine

Abstract

The utility model relates to the technical field of submarine shaft construction, disclose a kind of slurry balance anti-well drilling machine, comprising: anti-pulling driving device, suitable for installation on seabed;Tunneling host, including cutterhead and shield body;Drill rod, its upper end is drivingly connected with anti-pulling driving device, its lower end is connected with tunneling host;Anti-pulling driving device carries tunneling host and provides upward tunneling driving force for tunneling host.Slurry balance anti-well drilling machine is not set to push system, directly through anti-pulling driving device carries tunneling host and provides upward tunneling driving force for tunneling host, applicable to hard rock formation, improve tunneling efficiency, shorten construction cycle, further reduce the risk of water seepage, enhance the adaptability of equipment, expand the site selection range of nuclear power plant or deep sea sewage;And because there is no push system, will not occupy the internal space of main tunnel and squeeze the space of fire escape passage.

Description

Technical Field

[0001] This utility model relates to the field of subsea vertical shaft construction technology, specifically to a slurry balance raise boring machine. Background Technology

[0002] Shaft excavation along the coast is typically conducted in tidal flats, making it suitable for the construction of intake and drainage wells in nuclear power plants. Related technologies generally employ vertical jacking methods for coastal shaft construction. However, this method is unsuitable for formations containing hard rock, increasing construction difficulty. Furthermore, installing a jacking system during construction not only occupies internal tunnel space and encroaches on fire escape routes, but also prolongs the construction period and increases the risk of water seepage. Utility Model Content

[0003] In view of this, the present invention provides a slurry balance riser to solve the problems that the vertical jacking method cannot be applied to formations containing hard rock, which increases the difficulty of construction, prolongs the construction period, and increases the risk of water seepage.

[0004] In a first aspect, this utility model provides a slurry balance raise boring machine, suitable for subsea vertical shaft excavation, the slurry balance raise boring machine comprising:

[0005] The anti-pull drive device is installed in the rock strata below the seawater via pile foundation;

[0006] Tunneling machine, including cutterhead and shield;

[0007] The drill rod has its upper end connected to the reverse pull drive device and its lower end connected to the tunneling host.

[0008] The reverse pull drive device carries the tunneling host and provides the tunneling host with an upward tunneling driving force.

[0009] Beneficial effects: The mud balance riser does not have a jacking system. It directly supports the tunneling host and provides upward tunneling driving force through the reverse pull drive device. It is suitable for hard rock formations, improves tunneling efficiency, shortens the construction cycle, further reduces the risk of water seepage, enhances the adaptability of the equipment, and expands the site selection range for nuclear power plants or deep-sea sewage discharge. Moreover, since there is no jacking system, it will not occupy the internal space of the main tunnel or the space of fire escape passages.

[0010] In one optional implementation, the tunneling machine further includes:

[0011] A first conical body is disposed on the shield body and located below the cutterhead;

[0012] The second cone is rotatably disposed on the upper side of the first cone at intervals; a secondary crushing chamber is formed between the first cone and the second cone;

[0013] A cutting plate is disposed on the first conical body and located inside the secondary crushing chamber.

[0014] Beneficial effects: The second shape is rotatably mounted on the upper side of the first cone at intervals. During rotation, it cooperates with the cutting plate on the first cone to perform secondary crushing of the rock and soil after the first crushing by the cutter head, reducing the size of large rocks and facilitating slag removal.

[0015] In one alternative embodiment, the bottom surface of the second cone is inclined on the side away from the cutter head to form a beveled bottom surface, and a three-stage crushing chamber is formed below the beveled bottom surface.

[0016] Beneficial effects: After being crushed in the secondary crushing chamber, the rock and soil enter the tertiary crushing chamber under the action of gravity. When the second cone rotates, it cuts the bottom surface of the rock and soil to crush it three times, forming slag with smaller particle size.

[0017] In one alternative embodiment, the bottom end of the first cone extends downward to form a slag discharge channel for discharging mud, the slag discharge channel being externally connected to a mud-water circulation system or to a slag hopper.

[0018] Beneficial effects: The slurry mixture of slag and water is discharged along the slag discharge channel to the external mud-water circulation system or directly connected to the slag hopper, which facilitates slag discharge.

[0019] In one optional embodiment, a filter grid is provided at the junction of the first conical body and the slag discharge channel, and the tertiary crushing chamber is formed between the filter grid and the oblique bottom surface.

[0020] Beneficial effects: As the grinding wall of the tertiary crushing chamber, the filter bar reduces the number of parts and makes the structure simpler and more reliable. At the same time, the filter bar can effectively control the discharge speed of the mud.

[0021] In one alternative embodiment, the tunneling machine further includes a drive shaft and a drive box, wherein the second conical body is connected to the drive box via the drive shaft.

[0022] Beneficial effects: The drive box drives the transmission shaft, which in turn drives the second cone to rotate, performing secondary and tertiary crushing, thus improving the crushing effect.

[0023] In one optional embodiment, the slurry balance raise boring machine further includes an assembly device for assembling pipe sections to form a liner supporting the surrounding rock; the assembly device includes:

[0024] A welding assembly is used to weld multiple steel pipe sections layer by layer from top to bottom to the tail of the tunneling machine to form the liner; the liner rises synchronously with the tunneling machine.

[0025] Beneficial effects: The steel pipe sections are welded to form a lining. The steel pipe sections are relatively light in weight, and the reverse pull drive device can support the weight of the tunneling host and the lining. Driven by the reverse pull drive device, the lining can rise synchronously with the tunneling host, eliminating the need for a jacking system. Moreover, the welding speed is fast, further improving construction efficiency and eliminating the risk of water seepage caused by the long construction period of seabed vertical shaft excavation.

[0026] In one optional embodiment, the slurry balance raise boring machine further includes an assembly device for assembling pipe sections to form a liner supporting the surrounding rock; the assembly device includes:

[0027] The hoisting assembly, located inside the tunneling machine, is used to hoist concrete pipe sections to the tail of the tunneling machine and assemble them into a ring.

[0028] A reaction frame, installed in the tunnel, is used to support the lining formed by the assembly of concrete pipe sections;

[0029] A clamping assembly, located within the tunneling machine, is used to clamp concrete pipe sections from the top.

[0030] Beneficial effects: The hoisting assembly lifts the concrete pipe section to the tail of the tunneling machine for assembly, the counter-pull drive device bears the weight of the tunneling machine, the reaction frame bears the weight of the lining, and the clamping assembly clamps the concrete pipe section from the top, improving the sealing performance of the lining.

[0031] In one alternative embodiment, the top end of the drill rod is connected to the reverse pull drive device, the bottom end of the drill rod passes through the cutterhead, and the shield body is disposed at the bottom end of the drill rod.

[0032] Beneficial effects: Compared with the method in related technologies where the drill rod of the riser is fixedly connected to the upper end face of the cutterhead through a threaded connector, and the lower end face of the cutterhead is then connected to the connecting rod through a threaded connector, the drill rod passes directly through the cutterhead, and the drill rod and the connecting rod are integrated. This reduces assembly steps and improves assembly efficiency. At the same time, the reduced number of transmission parts improves mechanical strength and transmission reliability.

[0033] In one alternative embodiment, the drill rod and the cutterhead are connected by a spline.

[0034] Beneficial effects: Compared with threaded connections, splined connections offer higher transmission reliability and are easier to install. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a front view of a mud-balanced raise boring machine according to an embodiment of the present invention;

[0037] Figure 2 This is a front view of another slurry balance raise boring machine according to an embodiment of the present invention;

[0038] Figure 3 for Figure 2 Enlarged structural diagram of section A;

[0039] Figure 4 for Figure 2 An enlarged structural diagram of section A, showing the secondary and tertiary crushing chambers;

[0040] Figure 5 This is a top view of the structure of the first cone, the second cone, and the cut-out plate.

[0041] Figure 6 This is a schematic diagram illustrating the connection relationship between the drill rod and the cutterhead according to an embodiment of the present invention.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100. Tunnel; 200. Rock strata;

[0044] 1. Reverse pull drive device;

[0045] 2. Drill pipe;

[0046] 3. Tunneling machine;

[0047] 31. Cutterhead; 32. Shield body; 33. First cone; 34. Second cone; 341. Beveled bottom surface;

[0048] 35. Cutting plate; 36. Filter grid plate; 37. Drive shaft; 38. Drive box;

[0049] 391. Secondary crushing chamber; 392. Tertiary crushing chamber; 4. Slag discharge channel;

[0050] 5. Steel pipe sections;

[0051] 6. Clamping assembly;

[0052] 7. Concrete pipe sections;

[0053] 8. Slag bin;

[0054] 9. Reaction frame;

[0055] 10. Assembly machine;

[0056] 11. Spline. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0058] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] The following is combined Figures 1 to 6 The following describes embodiments of the present invention.

[0061] According to embodiments of the present invention, on the one hand, such as Figure 1 and Figure 2 As shown, a slurry balance raise boring machine is provided, suitable for subsea vertical shaft excavation. The slurry balance raise boring machine includes:

[0062] The anti-pull drive device 1 is installed in the rock layer 200 below the seawater via pile foundation;

[0063] The tunneling machine 3 includes a cutterhead 31 and a shield 32;

[0064] Drill rod 2, the upper end of which is connected to the reverse pull drive device 1, and the lower end of which is connected to the tunneling host 3;

[0065] The reverse pull drive device 1 carries the tunneling host 3 and provides the tunneling host 3 with an upward tunneling driving force.

[0066] The slurry balance riser drilling rig does not have a jacking system. Instead, it directly supports the tunneling host 3 through the reverse pull drive device 1 and provides upward tunneling driving force for the tunneling host 3. It is suitable for hard rock formations, improves tunneling efficiency, shortens the construction cycle, further reduces the risk of water seepage, enhances the adaptability of the equipment, and expands the site selection range for nuclear power plants or deep-sea sewage discharge. Moreover, since there is no jacking system, it will not occupy the internal space of the main tunnel or the space of the fire escape passage.

[0067] In some embodiments, such as Figures 3-5 As shown, the tunneling host 3 also includes:

[0068] The first conical body 33 is disposed on the shield body 32 and located below the cutter head 31;

[0069] The second cone 34 is rotatably disposed on the upper side of the first cone 33 at intervals; a secondary crushing chamber 391 is formed between the first cone 33 and the second cone 34;

[0070] The cutting plate 35 is disposed on the first conical body 33 and located inside the secondary crushing chamber 391.

[0071] The second shape is rotatably mounted on the upper side of the first cone 33 at intervals. During rotation, it cooperates with the cutting plate 35 on the first cone 33 to perform secondary crushing of the rock and soil after the first crushing by the cutter head 31, reducing the size of large rocks and facilitating slag removal.

[0072] In some embodiments, the bottom surface of the second cone 34 is inclined on the side away from the cutter head 31 to form a beveled bottom surface 341, and a tertiary crushing chamber 392 is formed below the beveled bottom surface 341. See [reference needed] Figure 4 .

[0073] After being crushed in the secondary crushing chamber 391, the rock and soil enter the tertiary crushing chamber 392 under the action of gravity. When the second cone 34 rotates, it cuts the bottom surface 341 at an angle to crush the rock and soil three times, forming slag with smaller particle size.

[0074] In some embodiments, the bottom end of the first cone 33 extends downward to form a slag discharge channel 4 for discharging mud, the slag discharge channel 4 being externally connected to a mud-water circulation system or connected to a slag hopper 8.

[0075] The slag and water mixture is discharged along the slag discharge channel 4 to the external mud-water circulation system or directly connected to the slag hopper 8 for convenient slag discharge.

[0076] In some embodiments, such as Figure 3 As shown, a filter grid plate 36 is provided at the junction of the first conical body 33 and the slag discharge channel 4, and the tertiary crushing chamber 392 is formed between the filter grid plate 36 and the oblique bottom surface 341.

[0077] The filter grid plate 36 serves as the grinding wall of the tertiary crushing chamber 392, resulting in fewer components and a simpler and more reliable structure. At the same time, the filter grid plate 36 can effectively control the discharge speed of the mud.

[0078] In some embodiments, the tunneling host 3 further includes a drive shaft 37 and a drive box 38, and the second conical body 34 is connected to the drive box 38 via the drive shaft 37.

[0079] The drive box 38 drives the transmission shaft 37, which in turn drives the second cone 34 to rotate, performing secondary and tertiary crushing to improve the crushing effect. In some embodiments, the assembly device includes:

[0080] Welding components are used to weld multiple steel pipe sections 5 layer by layer from top to bottom to the tail of the tunneling main unit 3 to form a liner; such as Figure 2 As shown, the liner rises synchronously with the tunneling host 3. Figure 2 The location indicated by B in the middle is the welding position of the pipe section.

[0081] The steel pipe section 5 is welded to form the lining. Since the steel pipe section 5 is relatively lightweight, the reverse pull drive device 1 can support the weight of the tunneling machine 3 and the lining. Driven by the reverse pull drive device 1, the lining can rise synchronously with the tunneling machine 3, eliminating the need for a jacking system. Furthermore, the welding speed is fast, further improving construction efficiency and eliminating the risk of water seepage caused by the long construction period in subsea shaft excavation. In addition, the lining formed by the welded steel pipe section 5 has excellent sealing performance, improving waterproofing and preventing seawater infiltration.

[0082] In some embodiments, the first steel pipe section 5 of the liner is bolted to the shield body 32.

[0083] The first steel pipe section 5 is bolted to the shield body 32, which facilitates the separation of the shield body 32 from the lining after the tunneling is completed.

[0084] In some embodiments, such as Figure 1 As shown, the assembly device includes:

[0085] The hoisting assembly (not shown in the figure) is installed inside the tunneling host 3 and is used to hoist the concrete pipe section 7 to the tail of the tunneling host 3 and assemble it into a ring.

[0086] The reaction frame 9 is installed in the tunnel 100 to support the lining formed by the assembly of the concrete pipe section 7;

[0087] The clamping assembly 6, located inside the tunneling host 3, is used to clamp the concrete pipe section 7 from the top.

[0088] The hoisting assembly lifts the concrete pipe section 7 to the tail of the tunneling host 3 for assembly. The reverse pull drive device 1 bears the weight of the tunneling host 3, the reaction frame 9 bears the weight of the liner, and the clamping assembly 6 clamps the concrete pipe section 7 from the top to improve the sealing performance of the liner.

[0089] The weight of the concrete pipe section 7 acts directly on the reaction frame 9, which can be applied to deep shaft and large-diameter shaft projects.

[0090] It should be noted that the raise boring machine also includes a slag removal device located below the cutterhead 31, used to collect and remove the slag generated during the drilling process; the slag removal device includes a slag removal channel 4.

[0091] In some embodiments, the top end of the drill rod 2 is connected to the reverse pull drive device 1, the bottom end of the drill rod 2 passes through the cutterhead 31, and the shield body 32 is disposed at the bottom end of the drill rod 2.

[0092] Compared with the method in related technologies where the drill rod 2 of the riser drilling rig is fixedly connected to the upper end face of the cutter head 31 through a threaded connector, and the lower end face of the cutter head 31 is then connected to the connecting rod through a threaded connector, the drill rod 2 of this utility model directly passes through the cutter head 31, and the drill rod 2 and the connecting rod are integrated, which reduces the assembly process and improves the assembly efficiency. At the same time, due to the reduction in the number of transmission components, the mechanical strength and transmission reliability are improved.

[0093] In some embodiments, the drill rod 2 is connected to the cutter head 31 via a spline 11.

[0094] The spline 11 connection method offers higher transmission reliability and easier installation compared to threaded connections.

[0095] In practical applications, external meshing teeth can be set on the drill rod 2 and at the center of the cutter head 31. When the drill rod 2 passes through the cutter head 31, the external meshing teeth and the internal meshing teeth are engaged to form a spline 11, which ensures smooth and reliable transmission.

[0096] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A slurry balance raise boring machine, characterized in that, Suitable for subsea vertical shaft excavation, the slurry balance raise boring machine includes: The anti-pull drive device (1) is installed in the rock layer (200) below the sea through pile foundation; The tunneling machine (3) includes a cutterhead (31) and a shield (32); The drill rod (2) has its upper end connected to the reverse pull drive device (1) and its lower end connected to the tunneling host (3). The reverse pull drive device (1) carries the tunneling host (3) and provides the tunneling host (3) with an upward tunneling driving force.

2. The slurry balance raise boring machine according to claim 1, characterized in that, The tunneling machine (3) also includes: The first cone-shaped body (33) is disposed on the shield body (32) and located below the cutter head (31); The second cone (34) is rotatably disposed on the upper side of the first cone (33) at intervals; a secondary crushing chamber (391) is formed between the first cone (33) and the second cone (34); A cutting plate (35) is disposed on the first cone (33) and located inside the secondary crushing chamber (391).

3. The slurry balance raise boring machine according to claim 2, characterized in that, The bottom surface of the second cone (34) is inclined on the side away from the cutter head (31) to form a beveled bottom surface (341), and a three-stage crushing chamber (392) is formed below the beveled bottom surface (341).

4. The slurry balance raise boring machine according to claim 3, characterized in that, The bottom end of the first cone (33) extends downward to form a slag discharge channel (4) for discharging mud, and the slag discharge channel (4) is connected to a mud-water circulation system or to a slag hopper (8).

5. The slurry balance raise boring machine according to claim 4, characterized in that, A filter grid plate (36) is provided at the junction of the first cone (33) and the slag discharge channel (4), and the three-stage crushing chamber (392) is formed between the filter grid plate (36) and the oblique bottom surface (341).

6. The slurry balance raise boring machine according to claim 2, characterized in that, The tunneling host (3) also includes a drive shaft (37) and a drive box (38), and the second cone (34) is connected to the drive box (38) via the drive shaft (37).

7. The slurry balance raise boring machine according to any one of claims 1 to 6, characterized in that, It also includes an assembly device for assembling pipe sections to form a liner supporting the surrounding rock; the assembly device includes: A welding assembly is used to weld multiple steel pipe sections (5) layer by layer from top to bottom to the tail of the tunneling host (3) to form the liner; the liner rises synchronously with the tunneling host (3).

8. The slurry balance raise boring machine according to any one of claims 1 to 6, characterized in that, It also includes an assembly device for assembling pipe sections to form a liner supporting the surrounding rock; the assembly device includes: The hoisting assembly is located inside the tunneling host (3) and is used to hoist the concrete pipe section (7) to the tail of the tunneling host (3) and assemble it into a ring. A reaction frame (9) is installed in the tunnel (100) to support the lining formed by assembling concrete pipe sections (7); A clamping assembly (6) is provided inside the tunneling host (3) for clamping concrete pipe sections (7) from the top.

9. The slurry balance raise boring machine according to any one of claims 1 to 6, characterized in that, The top end of the drill rod (2) is connected to the reverse pull drive device (1) for transmission, the bottom end of the drill rod (2) passes through the cutter head (31), and the shield body (32) is set at the bottom end of the drill rod (2).

10. The slurry balance raise boring machine according to claim 9, characterized in that, The drill rod (2) is connected to the cutter head (31) by a spline (11).

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