Slurry-based rock muck discharge system for vertical excavation operation

Abstract

A slurry-based rock muck discharge system for vertical excavation operation, comprising: a slurry treatment unit, the slurry treatment unit comprising a slurry separation device (1), a filter pressing device (2), a slurry preparation device (3) and a slurry mixing device (4) which are sequentially communicated by means of pipelines; a slurry supplementing pump (13), a slurry inlet of the slurry supplementing pump (13) being communicated with a slurry outlet of the slurry mixing device (4); a slurry supply pipe (5), a slurry inlet end of the slurry supply pipe (5) being communicated with a slurry outlet of the slurry supplementing pump (13), and a slurry outlet end being fixed on an excavation head (6) used for vertical excavation operation, the slurry outlet end of the slurry supply pipe (5) being close to a rotary cutter head (7) in the excavation head (6) and located right above the rotary cutter head (7), and a rock muck suction port being formed on the rotary cutter head (7); a rock muck discharge pump (8), the rock muck discharge pump (8) being arranged on the excavation head (6), and a slurry outlet of the rock muck discharge pump (8) being communicated with a slurry inlet of the slurry separation device (1); and a rock muck discharge inlet pipe (9), the rock muck discharge inlet pipe (9) being fixedly arranged on the excavation head (6), and a slurry outlet end of the rock muck discharge inlet pipe (9) being communicated with a slurry inlet of the rock muck discharge pump (8).

Description

A mud and water slag removal system for vertical tunneling operations Technical Field

[0001] The present invention relates to the technical field of slag discharge systems, and in particular to a muddy and water slag discharge system for vertical tunneling operations. Background Art

[0002] In the disposal of high-level radioactive waste, burying high-level radioactive waste in stable geological bodies at a depth of 500m to 1000m is currently generally considered to be a technically feasible final disposal method internationally.

[0003] A disposal repository for high-level radioactive waste in a geological body usually includes a horizontal channel and a vertically downward disposal pit on the channel. The vertically downward disposal pit needs to be formed by using a vertical tunneling head to dig vertically downward in the rock mass, i.e., vertical tunneling operations.

[0004] During vertical excavation operations, it is necessary to discharge the debris generated by excavation on the tunnel face. The commonly used method of slag discharge is vacuum slag discharge, that is, the debris at the tunnel face is sucked out by negative pressure. However, the speed of vacuum slag discharge is slow, and since the debris will collide with the slag suction port and the slag suction pipe during the discharge process, the slag suction port and the slag suction pipe are easily worn. If either the slag suction port or the slag suction pipe is damaged, the vacuum slag discharge system will not work normally, which will lead to the need to frequently repair the vacuum slag discharge system during vertical excavation operations, affecting the efficiency of vertical excavation operations and causing delays in construction period.

[0005] Therefore, the traditional vacuum slag removal system cannot meet the needs of high-efficiency vertical tunneling operations.

[0006] Summary of the Invention

[0007] The purpose of the present invention is to provide a mud and water slag discharge system for vertical tunneling operations, so as to solve the problems existing in the above-mentioned prior art and improve the slag discharge efficiency in vertical tunneling operations.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] The present invention provides a mud and water slag removal system for vertical excavation operations, comprising:

[0010] A mud and water treatment unit, comprising a mud and water separation device, a filter press device, a pulping device, and a pulp mixing device connected in sequence by pipelines;

[0011] A slurry replenishing pump, wherein the slurry inlet of the slurry replenishing pump is connected to the slurry outlet of the slurry mixing equipment;

[0012] A mud and water supply pipe, wherein the slurry inlet end of the mud and water supply pipe is connected to the slurry outlet of the slurry supply pump, the slurry outlet end is fixed to the tunneling head used for vertical tunneling operations, and the slurry outlet end of the mud and water supply pipe is close to the rotating cutterhead in the tunneling head and is located directly above the rotating cutterhead;

[0013] A slag discharge pump, the slag discharge pump is arranged on the tunneling head, and the slurry outlet of the slag discharge pump is connected to the slurry inlet of the mud-water separation equipment;

[0014] A slag discharge inlet pipe is fixed on the tunneling head, the slurry outlet end of the slag discharge inlet pipe is connected to the slurry inlet of the slag discharge pump, the slurry suction end of the slag discharge inlet pipe and the slurry outlet end of the mud and water supply pipe are close to the rotating cutter head in the tunneling head and are both located directly above the rotating cutter head.

[0015] Preferably, it also includes a slag discharge relay pump, the slurry inlet of the slag discharge relay pump is connected to the slurry outlet of the slag discharge pump through a slag discharge outlet pipe; the slurry outlet of the slag discharge relay pump is connected to the slurry inlet of the mud-water separation equipment through a pipeline.

[0016] Preferably, there is a gap between the slurry suction end of the slag discharge inlet pipe and the slurry discharge end of the mud and water supply pipe and the rotating cutter disc.

[0017] Preferably, the pulping equipment is used to prepare muddy water; the muddy water prepared by the pulping equipment can be further modulated by the pulping equipment; the muddy water separation equipment is used to perform solid-liquid separation on the muddy water mixed with rock slag; and the filter press equipment is used to perform filter press on the muddy water after solid-liquid separation.

[0018] Preferably, the mud-water separation unit and the slag discharge relay pump are both located outside the vertical well excavated for the vertical tunneling operation.

[0019] Preferably, the positions of the slag discharge supply pump and the mud-water separation unit are fixed.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] The mud and water slag discharge system for vertical excavation operation of the present invention improves the slag discharge efficiency in the vertical excavation operation.

[0022] Specifically, the present invention uses muddy water to carry the rock debris generated in the vertical excavation operation out of the tunnel face, with a fast slag discharge speed and less wear on the slag suction port, pipeline system, etc.; and because the rotary cutter head is immersed in muddy water during operation, the muddy water can also carry away the high heat of the rotary cutter head, thereby cooling the rotary cutter head, thereby improving the cutting effect and service life of the rotary cutter head, thereby facilitating improving the efficiency of the vertical excavation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] FIG1 is a schematic structural diagram of a mud and water slag removal system for vertical excavation operations according to the present invention;

[0025] FIG2 is a schematic diagram of a partial structure of a mud and water slag removal system for vertical excavation operations according to the present invention;

[0026] Among them, 1. Mud-water separation equipment; 2. Filter press equipment; 3. Slurry making equipment; 4. Slurry mixing equipment; 5. Mud supply pipe; 6. Tunneling head; 7. Rotating cutter head; 8. Slag pump; 9. Slag inlet pipe; 10. Slag outlet pipe; 11. Slag relay pump; 12. Rock mass; 13. Slurry pump. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The purpose of the present invention is to provide a mud and water slag discharge system for vertical tunneling operations, so as to solve the problems existing in the above-mentioned prior art and improve the slag discharge efficiency in vertical tunneling operations.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] As shown in Figures 1 and 2, this embodiment provides a mud and water slag discharge system for vertical excavation operations, including a mud and water treatment unit, a mud and water supply pipe 5, a slag discharge pump 8, a slag discharge inlet pipe 9, a slag discharge outlet pipe 10 and a slag discharge relay pump 11.

[0031] Among them, the mud and water treatment unit includes a mud and water separation equipment 1, a filter press equipment 2, a pulping equipment 3 and a pulp mixing equipment 4 which are connected in sequence by pipelines; the pulping equipment 3 is used to prepare mud and water; the mud and water prepared by the pulping equipment 3 can be further modulated by the pulping equipment 4; the mud and water separation equipment 1 is used to separate the solid and liquid of the mud and water mixed with rock slag; the filter press equipment 2 is used to filter the mud and water after the solid-liquid separation.

[0032] The slurry inlet of the slurry supply pump 13 is connected to the slurry outlet of the slurry mixing equipment 5, the slurry inlet end of the mud and water supply pipe 5 is connected to the slurry outlet of the slurry supply pump 13, and the slurry outlet end is fixed on the tunneling head 6 used for vertical excavation operations, and the slurry outlet end of the mud and water supply pipe 5 is close to the rotating cutter head 7 in the tunneling head 6 and is located directly above the rotating cutter head 7. The tunneling head 6 and the rotating cutter head 7 are both existing technologies.

[0033] It should be noted that the mud-water separation equipment 1, filter press equipment 2, pulping equipment 3, slurry mixing equipment 4, tunneling head 6, and rotary cutterhead 7 are all prior art. Therefore, in this embodiment, the structures and operating principles of the mud-water separation equipment 1, filter press equipment 2, pulping equipment 3, slurry mixing equipment 4, tunneling head 6, and rotary cutterhead 7 are not further described. In addition, due to the relatively complex structures of the tunneling head 6 and rotary cutterhead 7, they are simplified in FIG1 to ensure clarity.

[0034] The slag discharge pump 8 is arranged on the tunneling head 6, and the slurry outlet of the slag discharge pump 8 is connected to the slurry inlet of the mud-water separation equipment 1; the slag discharge inlet pipe 9 is fixed on the tunneling head 6, and the slurry outlet end of the slag discharge inlet pipe 9 is connected to the slurry inlet of the slag discharge pump 8, the slurry suction end of the slag discharge inlet pipe 9 and the slurry outlet end of the mud-water supply pipe 5 are both close to the rotating cutter head 7 in the tunneling head 6 and are both located directly above the rotating cutter head 7; and there is a gap between the slurry suction end of the slag discharge inlet pipe 9 and the slurry outlet end of the mud-water supply pipe 5 and the rotating cutter head 7.

[0035] The slurry inlet of the slag discharge relay pump 11 is connected to the slurry outlet of the slag discharge pump 8 through the slag discharge outlet pipe 10; the slurry outlet of the slag discharge relay pump 11 is connected to the slurry inlet of the mud-water separation equipment 1 through a pipeline.

[0036] The mud-water separation unit and the slag discharge relay pump 11 are both located outside the vertical well excavated by the vertical excavation operation, and can be fixed on the ground or fixed in the horizontal channel of the storage tank.

[0037] The specific working principle of the mud and water slag removal system for vertical excavation operation in this embodiment is as follows:

[0038] While the tunneling head 6 is vertically tunneling in the rock mass 12, the mud and water slag discharge system for vertical tunneling operations of this embodiment presses mud and water into the tunnel face of the vertical tunneling operation, and the mud and water are mixed with the rock slag cut off by the rotating cutter head 7 and stirred to form high-concentration mud and water. It should be noted that since the rotary cutter head 7 in the prior art is usually a hollow design, that is, there are many gaps on the rotary cutter head 7, the mud and water flowing out of the mud and water supply pipe 5 can reach the tunnel face through the rotary cutter head 7, and then mix with the slag on the tunnel face, and then carry the slag through the rotary cutter head 7 again, and then enter the slag discharge inlet pipe 9; the high-concentration mud and water are pumped to the mud and water treatment unit through the slag discharge pump 8 and the slag discharge relay pump 11, and solid-liquid separation is carried out by the mud and water separation pump. The mud and water separated by solid and liquid are filtered by the filter press 2, and the mud and water after filtering are prepared by the pulping equipment 3 and modulated by the pulping equipment 4, and then pumped back into the tunnel face for recycling under the action of the slurry supply pump 13.

[0039] The mud and water slag discharge system for vertical excavation operations in this embodiment uses mud and water to carry the rock slag generated in the vertical excavation operations out of the tunnel face, with a fast slag discharge speed and less wear on the slag suction port, piping system, etc.; and because the rotary cutter head 7 is immersed in mud and water during operation, the mud and water can also carry away the high heat of the rotary cutter head 7, thereby cooling the rotary cutter head 7, thereby improving the cutting effect of the rotary cutter head 7 and extending its service life, thereby facilitating improving the efficiency of the vertical excavation operations.

[0040] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A mud and water slag removal system for vertical excavation operation, characterized in that: include: A mud and water treatment unit, the mud and water treatment unit comprising a mud and water separation device, a filter press device, a pulping device and a pulp mixing device which are sequentially connected by pipelines; A slurry replenishing pump, wherein the slurry inlet of the slurry replenishing pump is connected to the slurry outlet of the slurry mixing equipment; A mud and water supply pipe, wherein the slurry inlet end of the mud and water supply pipe is connected to the slurry outlet of the slurry supply pump, the slurry outlet end is fixed on the tunneling head used for vertical tunneling operations, and the slurry outlet end of the mud and water supply pipe is close to the rotating cutter head in the tunneling head and is located directly above the rotating cutter head; A slag discharge pump, wherein the slag discharge pump is arranged on the tunneling head, and a slurry outlet of the slag discharge pump is connected to a slurry inlet of the mud-water separation device; A slag discharge inlet pipe, wherein the slag discharge inlet pipe is fixedly mounted on the tunneling head, a slurry outlet end of the slag discharge inlet pipe is connected to a slurry inlet of the slag discharge pump, a slurry suction end of the slag discharge inlet pipe and a slurry outlet end of the mud and water supply pipe are both close to the rotating cutter disc in the tunneling head and are both located directly above the rotating cutter disc.

2. The muddy water and slag removal system for vertical excavation operation according to claim 1 is characterized in that: It also includes a slag discharge relay pump, the slurry inlet of the slag discharge relay pump is connected to the slurry outlet of the slag discharge pump through a slag discharge outlet pipe; the slurry outlet of the slag discharge relay pump is connected to the slurry inlet of the mud-water separation equipment through a pipeline.

3. The muddy water and slag removal system for vertical excavation operation according to claim 1 is characterized in that: There is a gap between the slurry suction end of the slag discharge inlet pipe and the slurry discharge end of the mud and water supply pipe and the rotating cutter disc.

4. The muddy water and slag removal system for vertical excavation operation according to claim 1 is characterized in that: The pulping equipment is used to prepare muddy water; the muddy water prepared by the pulping equipment can be further modulated by the pulping equipment; the muddy water separation equipment is used to perform solid-liquid separation on the muddy water mixed with rock slag; the filter press equipment is used to perform filter press on the muddy water after solid-liquid separation.

5. The muddy water and slag removal system for vertical excavation operation according to claim 2, characterized in that: The mud-water separation unit and the slag discharge relay pump are both located outside the vertical well excavated by the vertical excavation operation.

6. The muddy water and slag removal system for vertical excavation operation according to claim 2, characterized in that: The positions of the slag discharge supply pump and the mud-water separation unit are fixed.

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