Follow-up water retaining device and drainage system

Abstract

The utility model provides a follow-up water blocking device which comprises a blocking unit, the blocking unit is connected with a heading machine, and a sealing unit is arranged between the bottom of the blocking unit and the arch bottom of a tunnel or the bottom of a shield shell. The drainage system comprises the follow-up water retaining device, a drainage unit comprises a lifting device and a drainage pump, and the lifting device is adjustably arranged in the axial direction and the radial direction of the tunnel. The water blocking device has the functions of blocking tunnel backflow water in the downhill tunneling process of the tunneling machine and synchronously pumping and draining, a main machine of the tunneling machine is prevented from being flooded, normal construction of the tunneling machine under the condition of large water burst in large downhill tunneling is guaranteed, and the water blocking device effectively blocks sewage and is easy to install and convenient to maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of drainage during tunnel boring machine construction, in particular to a follow-up water blocking device and a drainage system. Background Art

[0002] With the continuous development of tunnel boring machines, more and more equipment is being used in the mining field. Mine tunnel construction is basically a steep downhill construction. If water-rich strata are encountered, a large amount of water will accumulate in the tunnel. If it is not intercepted and pumped out in a timely and effective manner, there is a high risk of flooding the equipment. In addition, the construction is difficult and the excavation efficiency is low. It is difficult to make a good breakthrough in the construction of steep inclined shafts with water-rich strata for tunnel boring machines. Existing inclined shaft tunnel boring machines generally use electric submersible pumps to discharge the sewage in the shield into the sewage tank equipped at the rear of the tunnel boring machine. However, electric submersible pumps have poor self-priming ability and are large in size, making them difficult to place and move. Many low-lying sewage cannot be pumped out. If sewage accidentally enters electrical equipment, it can easily cause a short circuit.

[0003] Therefore, different tunnel boring machine sewage discharge devices have appeared in existing construction, mainly as follows:

[0004] Prior Art: A Chinese utility model patent application with a publication date of January 21, 2022, and publication number CN215595655U discloses a self-priming sewage system and a roadheader therefor. The system comprises a water diversion tank with a water inlet at its top and a drain at its bottom. The water inlet is connected to an inlet pipe, preferably a hose. The drain is provided with a sewage valve. The water diversion tank is connected to a vacuum pump and a slurry pump. The slurry pump is connected to a sewage tank via a first pipe, which is provided with an on-off valve; the on-off valve is a pneumatic ball valve.

[0005] In the above-mentioned existing technology, the sewage at a low position is led to the upper water diversion tank and discharged by a slurry pump. However, there is no device to intercept the sewage. The accumulated sewage is only pumped away. The same defects as the traditional technology still exist. The sewage is not fundamentally intercepted, which will cause water accumulation in the tunnel. If it is not intercepted and pumped out in a timely and effective manner, there is a risk of flooding the equipment.

[0006] Therefore, how to prevent the accumulated water in the tunnel from flowing into the tunnel boring machine and causing flooding of the equipment is a technical problem that needs to be solved urgently. Utility Model Content

[0007] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a follow-up water blocking device and a drainage system, which solves the problem in the prior art that accumulated water easily flows into the tunnel boring machine.

[0008] The technical solution of this application is:

[0009] A follow-up water intercepting device includes an intercepting unit, which is connected to a tunnel boring machine. A sealing unit is provided between the bottom of the intercepting unit and the bottom of the tunnel arch or the bottom of the shield shell. The water intercepting device follows the tunnel boring machine forward or backward to intercept and store the tunnel return water, and can realize the functions of intercepting, storing and draining water when the tunnel boring machine is excavating, and can realize normal construction under the condition of large water inflow in the tunnel. During the downhill excavation of the tunnel boring machine, the tunnel return water is intercepted and the pumping and drainage functions are performed simultaneously to prevent the main body of the tunnel boring machine from being flooded, and ensure that the tunnel boring machine can operate normally under the condition of large water inflow during large downhill excavation. The water intercepting device effectively intercepts sewage, is simple to install and easy to maintain; it effectively drains water to prevent a large amount of water from entering the face and affecting slag excavation. The device realizes that the equipment can still excavate normally under the condition of large water inflow in the tunnel, improves production efficiency, saves costs, and reduces the risk of equipment being flooded.

[0010] Furthermore, the intercepting unit is welded to the tunnel boring machine, and a gap is left between the intercepting unit and the tunnel arch bottom or the shield shell bottom for placing the sealing unit, so as to prevent the follow-up water intercepting device from being damaged by scraping against the tunnel arch bottom when following forward or backward.

[0011] Furthermore, the intercepting unit is connected to the tunnel boring machine through a connecting piece, and a gap is left between the intercepting unit and the tunnel arch bottom or the shield shell bottom for placing the sealing unit to prevent the follow-up water intercepting device from being damaged by scraping against the tunnel arch bottom when following forward or backward.

[0012] Furthermore, the connecting member includes a bolt group, and the intercepting unit and the tunnel boring machine are both provided with holes for the bolt group to pass through.

[0013] Furthermore, the intercepting unit is connected to the tunnel boring machine through a pin joint, and a gap is left between the intercepting unit and the tunnel arch bottom or the shield shell bottom for placing the sealing unit to prevent the follow-up water intercepting device from being damaged by scraping against the tunnel arch bottom when following forward or backward.

[0014] Furthermore, the pin connection includes a connecting plate provided on the steel structure of the tunnel boring machine, the intercepting unit is provided with an interface connected to the connecting plate, and the connecting plate and the interface are connected by a wedge-shaped pin.

[0015] Furthermore, the interception unit includes a box with an arc-shaped bottom, which can be adapted to the tunnel or shield. The width of the box is the same as the diameter of the tunnel. The outer surface of the curved bottom of the box fits with the inner surface of the tunnel arch bottom or the shield shell, so as to better intercept the sewage and backflow water in the tunnel.

[0016] Furthermore, the interior of the box is filled with a ballast member to prevent the connection point between the follow-up water-blocking device and the tunnel boring machine from breaking and causing displacement or floating, which would lead to the formation of gaps, and sewage and backflow water would easily flow into the tunnel boring machine through the gaps.

[0017] Furthermore, the sealing unit includes a waterproof elastic pad and a water-swellable pad, and the water-swellable pad is arranged in close contact with the waterproof elastic pad.

[0018] Furthermore, the waterproof elastic pad includes rubber, and the water-swellable pad includes a quilt.

[0019] Furthermore, the rubber and the quilt are both provided with at least two layers.

[0020] Furthermore, the dimension of the sealing unit extending along the axial direction of the tunnel is larger than the dimension of the box body extending along the axial direction of the tunnel, and a second ballast piece is placed on the sealing unit that exceeds the size of the box body. The second ballast piece compacts and seals the sealing unit and completely fits it with the tunnel arch bottom or the shield shell bottom, thereby better achieving the water-stopping effect.

[0021] A drainage system comprises the above-mentioned follow-up water-blocking device, wherein the drainage unit comprises a drainage pump connected to a lifting device, and the lifting device is adjustably arranged along the axial direction and radial direction of the tunnel.

[0022] Furthermore, the lifting device includes a hand chain hoist, electric hoist, hydraulic cylinder, pneumatic cylinder, or winch mounted on the tunnel boring machine's beam slideway. Operators can adjust the horizontal and vertical position of the water pump at will, ensuring a more comprehensive and thorough drainage effect, even allowing sewage and backflow water at the tunnel bottom to be discharged.

[0023] The specific beneficial effects of the utility model include:

[0024] 1. During the downhill excavation process of the tunnel boring machine, the backflow water of the tunnel is intercepted and the drainage function is carried out simultaneously to prevent the main engine of the tunnel boring machine from being flooded. This ensures that the tunnel boring machine can operate normally under the condition of large water inrush during the downhill excavation. The water interception device effectively intercepts the sewage and is simple to install and maintain.

[0025] 2. It can realize simultaneous water blocking, drainage and excavation of the roadheader in the construction of water-rich strata with a large downhill slope;

[0026] 3. Effective drainage prevents large amounts of water from entering the tunnel face and affecting slag removal and excavation. This device ensures that the equipment can continue to excavate normally even when the tunnel has a large amount of water, thereby improving production efficiency, saving costs, and reducing the risk of equipment being flooded. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of 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.

[0028] Figure 1 This is a schematic diagram of the installation location of the water blocking device;

[0029] Figure 2 This is a front view of the water blocking device;

[0030] Figure 3 This is a side view of the water blocking device;

[0031] Figure 4 This is an enlarged view of the water retaining device;

[0032] Figure 5 This is a schematic diagram showing the usage status of the water retaining device and drainage system.

[0033] Description of Figure Numbers:

[0034] 2. Interception unit; 3. Sealing unit;

[0035] 11. Wear-resistant rubber; 12. Quilt; 13. Soft rubber; 15. Second weight piece;

[0036] 21. Hand hoist; 22. Drain pump; 31. Box body; 32. Ballast piece 1. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 creative work are within the scope of protection of the present invention.

[0038] A follow-up water blocking device, such as Figure 1 、 Figure 2As shown, it includes an interception unit 2, which is connected to the tunnel boring machine. A sealing unit 3 is provided between the bottom of the interception unit 2 and the tunnel arch bottom or the bottom of the shield shell. The water intercepting device follows the tunnel boring machine forward or backward to intercept and store the tunnel return water, which can realize the functions of water interception, water storage and water drainage when the tunnel boring machine is excavating, and can realize normal construction under the condition of large water inflow in the tunnel; intercept the tunnel return water during the downhill excavation of the tunnel boring machine, and simultaneously perform the function of pumping and draining to prevent the main body of the tunnel boring machine from being flooded, ensuring the normal construction of the tunnel boring machine under the condition of large water inflow during large downhill excavation. The water intercepting device effectively intercepts sewage, is simple to install and easy to maintain; effectively drains water to prevent a large amount of water from entering the face and affecting slag excavation. This device ensures that the equipment can still excavate normally under the condition of large water inflow in the tunnel, improves production efficiency, saves costs, and reduces the risk of equipment being flooded.

[0039] Example 1, as a preferred implementation of the follow-up water-blocking device, the intercepting unit 2 is welded to the tunnel boring machine, and the intercepting unit 2 is welded to the steel structure of the shield body. A gap is left between the intercepting unit 2 and the tunnel arch bottom or the shield shell bottom for placing the sealing unit 3 to prevent the follow-up water-blocking device from being damaged by rubbing against the tunnel arch bottom when following forward or backward.

[0040] Example 2, as Figure 3 As shown, as a preferred embodiment of the follow-up water-blocking device, the difference from Example 1 is that the intercepting unit 2 is connected to the tunnel boring machine through a connecting piece, and a gap is left between the intercepting unit 2 and the tunnel arch bottom or the shield shell bottom for placing the sealing unit 3, so as to prevent the follow-up water-blocking device from being damaged by rubbing against the tunnel arch bottom when following forward or backward.

[0041] On the basis of the above embodiment, as a preferred embodiment, the connecting member includes a bolt group, and the intercepting unit 2 and the tunnel boring machine are both provided with holes for the bolt group to pass through.

[0042] Example 3, as a preferred implementation of the follow-up water-blocking device, is different from Example 1 and Example 2 in that the intercepting unit 2 is connected to the tunnel boring machine through a pin joint, and a gap is left between the intercepting unit 2 and the tunnel arch bottom or the shield shell bottom for placing the sealing unit 3, so as to prevent the follow-up water-blocking device from being damaged by scraping against the tunnel arch bottom when following forward or backward.

[0043] Based on the above embodiment, as a preferred embodiment, the pin connection includes a connecting plate arranged on the steel structure of the tunnel boring machine, and the intercepting unit 2 is provided with an interface connected to the connecting plate, and the connecting plate and the interface are connected by a wedge-shaped pin.

[0044] Example 4, as a preferred implementation of the follow-up water-blocking device, is different from Example 1, Example 2, and Example 3 in that the intercepting unit 2 is connected to the tunnel boring machine through a hanging part, and a gap is left between the intercepting unit 2 and the tunnel arch bottom or the shield shell bottom for placing the sealing unit 3, so as to prevent the follow-up water-blocking device from being damaged by scraping against the tunnel arch bottom when following forward or backward.

[0045] On the basis of the above embodiment, as a preferred embodiment, the hanging part includes a hook provided on the steel structure of the tunnel boring machine, and the intercepting unit 2 is provided with a hanging ring connected to the hook, and the hook is hung and matched with the hanging ring.

[0046] On the basis of the above embodiment, as a preferred embodiment, the interception unit 2 includes a box 31 with an arc-shaped bottom, which can be adapted to the tunnel or shield. The dimension of the box 31 extending in the radial direction of the tunnel is the same as the diameter of the tunnel. The outer surface of the curved bottom of the box 31 fits with the inner surface of the tunnel arch bottom or the shield shell, so as to better intercept the sewage and backflow water in the tunnel. When the water level is high, the box 31 can still effectively intercept, and the sewage and backflow water will not flow into the tunnel boring machine from both sides of the box because the width of the box is smaller than the tunnel diameter, thereby affecting the operation of the tunnel boring machine.

[0047] Based on the above implementation, Figure 3 As shown, as a preferred embodiment, the interior of the box body 31 is filled with a ballast 32.

[0048] Preferably, the ballast 32 is a sandbag or bricks to prevent the displacement or floating caused by the breakage of the connection point between the follow-up water-blocking device and the tunnel boring machine, which leads to the formation of gaps. Sewage and backflow water can easily flow into the tunnel boring machine through the gaps, ensuring that the box body 31 is tightly fitted with the sealing unit 3.

[0049] On the basis of the above embodiment, as a preferred embodiment, the sealing unit 3 includes a waterproof elastic pad and a water-swellable pad, and the water-swellable pad is arranged in contact with the waterproof elastic pad.

[0050] Based on the above embodiment, as a preferred embodiment, the waterproof elastic pad includes rubber, and the water-swellable pad includes a quilt.

[0051] Based on the above embodiment, as a preferred embodiment, the rubber and the quilt are both provided with at least two layers.

[0052] Preferably, if Figure 4As shown, the rubber includes a wear-resistant rubber 11 or a soft rubber 13. The wear-resistant rubber 11 is fitted to the bottom of the box 31. A quilt 12 is fitted below the wear-resistant rubber 11. The soft rubber 13 is fitted below the quilt 12. The gap between the soft rubber 13 and the bottom of the tunnel arch or shield is again filled with the quilt 12. Placing the wear-resistant rubber 11 at the top layer can effectively extend the rubber's service life. Placing the soft rubber between the quilts 12 can increase the friction between the quilts. The sealing unit can also be other waterproof sealing materials.

[0053] The sealing unit 3 fills the gap between the bottom of the box and the tunnel arch bottom or the shield shell bottom to achieve the effect of stopping water and blocking slag, preventing backflow water and mud from entering the main machine and affecting slag discharge. In order to achieve better performance of the sealing unit 3, the material of the sealing unit 3 should be replaced regularly.

[0054] On the basis of the above embodiment, as a preferred embodiment, the dimension of the sealing unit 3 extending in the axial direction of the tunnel is larger than the dimension of the box body 31 extending in the axial direction of the tunnel, and a ballast piece 15 is placed on the sealing unit 3 that exceeds the dimension of the box body 31 to make the sealing unit 3 fit with the tunnel arch bottom or the shield shell bottom.

[0055] Preferably, the second ballast member 15 is a sandbag or masonry, which compacts and seals the sealing unit 3 and the tunnel arch bottom or the shield shell bottom, and fits them completely together to achieve a better water-stopping effect.

[0056] A drainage system, comprising the above described follow-up water blocking device, such as Figure 5 As shown, the drainage unit includes a drainage pump 22 connected to a lifting device, and the lifting device is adjustably arranged along the axial direction and radial direction of the tunnel.

[0057] On the basis of the above embodiment, as a preferred embodiment, the lifting device includes a hand chain hoist 21 or an electric hoist or an oil cylinder or an air cylinder or a winch arranged on the tunnel boring machine beam slideway.

[0058] Specifically, the hand hoist 21 is connected to the beam slideway behind the main body of the tunnel boring machine. The chain of the hand hoist 21 is connected to a drainage pump 22 that pumps the sewage intercepted by the water intercepting device 1 into a sewage tank or out of the tunnel. The operator can adjust the horizontal and vertical positions of the drainage pump 22 at will to make the drainage effect more comprehensive and thorough. Even the sewage and backflow water at the bottom of the tunnel can be discharged from the tunnel. When the drainage pump 22 is lifted upward by the hand hoist, the manual chain is pulled clockwise and the hand chain wheel rotates. When lowering, the hand chain is pulled counterclockwise to steadily lower the drainage pump 22. The pumping angle of the drainage pump 22 can also be adjusted.

[0059] Specifically, the electric hoist is connected to the beam slide behind the main machine of the tunnel boring machine, and the electric hoist chain is driven to move up and down by the motor. The chain of the electric hoist is connected to a drainage pump 22 that pumps the sewage intercepted by the water intercepting device 1 into a sewage tank or discharges it out of the tunnel. The operator can adjust the position of the drainage pump 22 at will.

[0060] Specifically, one end of the oil cylinder is connected to the beam slide behind the main machine of the tunnel boring machine, and the other end of the oil cylinder is connected to a drainage pump 22 that pumps the sewage intercepted by the water intercepting device 1 into a sewage tank or discharges it out of the tunnel. The drainage pump 22 rises and falls with the reciprocating motion of the oil cylinder, and the operator can adjust the position of the drainage pump 22 at will.

[0061] Specifically, one end of the cylinder is connected to the beam slide behind the main machine of the tunnel boring machine, and the other end of the cylinder is connected to a drainage pump 22 that pumps the sewage intercepted by the water intercepting device 1 into a sewage tank or discharges it out of the tunnel. The drainage pump 22 rises and falls with the reciprocating motion of the cylinder, and the operator can adjust the position of the drainage pump 22 at will.

[0062] Specifically, the winch is connected to the beam slide behind the main machine of the tunnel boring machine. The steel wire rope of the winch is connected to a drainage pump 22 that pumps the sewage intercepted by the water intercepting device 1 into a sewage tank or out of the tunnel. The operator can adjust the position of the drainage pump 22 at will.

[0063] During the downhill excavation of the tunnel boring machine, the backflow water from the tunnel is intercepted and the pumping and drainage function is performed simultaneously to prevent the main engine of the tunnel boring machine from being flooded, ensuring the normal operation of the tunnel boring machine under the condition of large water inrush during the downhill excavation. The water interception device effectively intercepts the sewage and is simple to install and maintain. It effectively drains water to prevent a large amount of water from entering the tunnel face and affecting the slag excavation. The device ensures that the equipment can still excavate normally under the condition of large water inflow in the tunnel, thereby improving production efficiency, saving costs, and reducing the risk of equipment being flooded.

[0064] Anything not described in detail in the present invention is a conventional technical means known to those skilled in the art.

[0065] The above content shows and describes the basic principles, main features and beneficial effects of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A follow-up water blocking device, characterized in that: The invention comprises an intercepting unit (2), the intercepting unit (2) being connected to a tunnel boring machine, a sealing unit (3) being provided between the bottom of the intercepting unit (2) and the tunnel arch bottom or the shield shell bottom, the intercepting unit (2) comprising a box body (31) having an arc-shaped bottom, the box body (31) being adapted to the tunnel or the shield body, and the outer surface of the bottom curved surface of the box body (31) being in contact with the inner surface of the tunnel arch bottom or the shield shell.

2. The follow-up water blocking device according to claim 1, characterized in that: The intercepting unit (2) is welded to the tunnel boring machine, and a gap for accommodating the sealing unit (3) is left between the intercepting unit (2) and the tunnel arch bottom or the shield shell bottom.

3. The follow-up water blocking device according to claim 1, characterized in that: The intercepting unit (2) is connected to the tunnel boring machine via a connecting piece, and a gap for placing the sealing unit (3) is left between the intercepting unit (2) and the tunnel arch bottom or the shield shell bottom.

4. The follow-up water blocking device according to claim 3, characterized in that: The connecting member comprises a bolt group, and the intercepting unit (2) and the tunnel boring machine are both provided with holes for the bolt group to pass through.

5. The follow-up water blocking device according to claim 1, characterized in that: The intercepting unit (2) is connected to the tunnel boring machine via a pin connection, and a gap for accommodating the sealing unit (3) is left between the intercepting unit (2) and the tunnel arch bottom or the shield shell bottom.

6. The follow-up water blocking device according to claim 5, characterized in that: The pin connection member comprises a connection plate arranged on the steel structure of the roadheader, and the interception unit (2) is provided with an interface connected to the connection plate, and the connection plate and the interface are connected via a wedge-shaped pin.

7. The follow-up water blocking device according to any one of claims 1 to 6, characterized in that: The dimension of the box (31) extending in the radial direction of the tunnel is the same as the diameter of the tunnel.

8. The follow-up water blocking device according to claim 7, characterized in that: The interior of the box (31) is filled with a ballast piece (32).

9. The follow-up water blocking device according to any one of claims 1 to 6 and 8, characterized in that: The sealing unit (3) comprises a waterproof elastic pad and a water-swelling pad, and the water-swelling pad is arranged in contact with the waterproof elastic pad.

10. The follow-up water blocking device according to claim 9, characterized in that: The waterproof elastic pad comprises rubber, and the water-swellable pad comprises a quilt (12).

11. The follow-up water blocking device according to claim 10, characterized in that: The rubber and the quilt (12) are both provided with at least two layers.

12. The follow-up water blocking device according to claim 11, characterized in that: The dimension of the sealing unit (3) extending in the axial direction of the tunnel is larger than the dimension of the box (31) extending in the axial direction of the tunnel, and a second ballast (15) is placed on the sealing unit (3) exceeding the dimension of the box (31).

13. A drainage system, characterized in that: The invention comprises the follow-up water-blocking device according to any one of claims 1 to 12, wherein the drainage unit comprises a drainage pump (22) connected to a lifting device, and the lifting device is adjustable along the axial direction and radial direction of the tunnel.

14. The drainage system according to claim 13, characterized in that: The lifting device comprises a hand chain hoist (21) or an electric hoist or an oil cylinder or an air cylinder or a winch arranged on a beam slideway of the tunnel boring machine.

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