Water plugging and draining device for water-rich karst tunnel

Abstract

The utility model relates to a water-rich karst tunnel water blocking and draining device in the technical field of tunnel engineering. The water-rich karst tunnel water blocking and draining device comprises a water suction pump, a booster pump, a first motor, a second motor and a motor control module. The first motor is connected with the water suction pump, the second motor is connected with the booster pump, and the first motor and the second motor are both connected with the motor control module. The motor control module is used for controlling the second motor to be started after the first motor is started and controlling the second motor to be stopped after the first motor is stopped; the first motor is used for driving the water pump to pump drained water of the water-rich rock stratum; and the second motor is used for driving the booster pump to pressurize during grouting. By means of the arrangement, the control effect that drainage is conducted firstly, then grouting is conducted, and then cooperative operation is conducted is achieved, orderly starting and stopping of the water suction pump and the booster pump are achieved, and coordinated cooperation of water plugging operation and drainage operation is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel engineering, and particularly relates to a water-blocking and draining device for a water-rich karst tunnel. BACKGROUND

[0002] In the field of tunnel engineering, especially in the construction of tunnels passing through water-rich karst strata, water leakage is a very common and technically difficult problem. The hydrogeological conditions of such strata are complex, with high water pressure and abundant water supply. If the water leakage problem is not properly handled, it will not only seriously affect the safety and progress of construction, but also threaten the long-term stability and operation safety of the tunnel structure. Therefore, developing efficient and reliable water leakage treatment technology is a key requirement for such tunnel construction.

[0003] CN112031812B discloses a drainage positioning grouting pipe piece and a construction method thereof, which includes a prefabricated pipe piece main body and a grouting and drainage system. The drainage or grouting is triggered by a water pressure sensor; however, the drainage and grouting functions are completely separated, and the valve needs to be disassembled for drainage, and then the grouting system needs to be connected for reinforcement. The operation process is fragmented, and the collaborative work of drainage and grouting cannot be realized. CN118517304A discloses a water-rich karst tunnel rapid water-blocking and draining device and a use method. The method is to drill a grouting bag into the tunnel water-rich karst area to make the bag expand and pressurize to reinforce the surrounding rock, realize the water-blocking effect, and passively drain water through the drainage pipeline with water seepage holes. Then, the water-blocking and drainage processes are carried out synchronously, and there is a lack of orderly control logic. The water-blocking process may block the drainage pipeline, or the drainage volume may be too large to cause the water-rich rock to be unstable.

[0004] In the traditional water-rich karst tunnel water leakage treatment method, water-blocking and drainage are usually considered as two separate processes. The common practice is that the construction personnel first use a set of pipeline system for water-blocking operation, and then replace or use another set of pipeline system for drainage operation after the water-blocking operation is completed or achieves a certain effect. This manual step-by-step operation and function separation mode leads to a complicated construction process, frequent process conversion, significantly prolonged construction period, and reduced overall water-blocking and drainage efficiency. Although some technologies have tried to integrate water-blocking and drainage functions in the same device in recent years to improve efficiency, there are still obvious deficiencies in the collaborative work and control logic between the water-blocking and drainage functions of such integrated devices in actual application. CONTENT OF THE UTILITY MODEL

[0005] To solve the above technical problems, the present application provides a water-blocking and draining device for a water-rich karst tunnel.

[0006] The present application provides a water-blocking and draining device for a water-rich karst tunnel, which comprises a water pump, a booster pump, a first motor, a second motor and a motor control module.

[0007] The first motor is connected with the water pump, the second motor is connected with the booster pump, and the first motor and the second motor are connected with the motor control module.

[0008] The motor control module is used for controlling the second motor to start after the first motor starts, and controlling the second motor to stop after the first motor stops; the first motor is used for driving the water pump to extract the drainage of the water-rich rock stratum; and the second motor is used for driving the booster pump to boost when grouting.

[0009] Optionally, the motor control module comprises a first control circuit and a second control circuit, and the first control circuit and the second control circuit are connected in parallel.

[0010] The first control circuit is used for controlling the start or stop of the first motor, and the second control circuit is used for controlling the start of the second motor after the start of the first motor, and controlling the stop of the second motor after the stop of the first motor.

[0011] Optionally, the first control circuit comprises a first start button, a first stop button, a first coil of a first relay and a first normally open contact, the first start button, the first stop button and the first coil are connected in series, and the first normally open contact is connected in parallel with the first start button.

[0012] The second control circuit comprises a second start button, a second stop button, a second normally open contact of the first relay, a second coil of a second relay, a third normally open contact and a fourth normally open contact, the second start button, the second stop button, the second coil and the third normally open contact are connected in series, the fourth normally open contact is connected in parallel with the second start button, and the second stop button and the third normally open contact are connected in parallel with the second normally open contact.

[0013] Optionally, the water-rich karst tunnel drainage blocking device further comprises:

[0014] a water tank and a slurry tank, the water tank and the slurry tank are connected through a first opening;

[0015] a filter screen covering the first opening;

[0016] a first pressure sensor located in the slurry tank and used for detecting the concentration of slurry;

[0017] a water amount control valve located on the side of the filter screen close to the water tank and connected with the first pressure sensor; the water amount control valve is used for opening or stopping the injection of water in the water tank into the slurry tank according to the concentration of slurry.

[0018] Optionally, the water amount control valve comprises a relay and a control valve.

[0019] The relay is used to be powered when the slurry concentration is greater than a first set concentration, the control valve is in an open state, water in the water tank is injected into the slurry tank, and the relay is de-energized when the slurry concentration is lower than a second set concentration, the control valve is in a closed state, and the injection of water in the water tank into the slurry tank is stopped.

[0020] The first set concentration is greater than the second set concentration.

[0021] Optionally, the water-rich karst tunnel water blocking and draining device further comprises a draining pipe and a grouting pipe, the draining pipe being located inside the grouting pipe.

[0022] The slurry tank comprises a grouting pipe hole, and the water tank comprises a draining pipe hole on a side close to the slurry tank; the draining pipe is connected to the water tank through the draining pipe hole, and the grouting pipe is connected to the slurry tank through the grouting pipe hole.

[0023] Optionally, the water-rich karst tunnel water blocking and draining device further comprises:

[0024] The composite pipe head comprises a conical top cover, a water diversion pipe, a grouting hole pipe, a grouting hole sleeve, and a water pressure control valve, and the grouting hole pipe comprises a plurality of grouting holes.

[0025] The grouting pipe is connected to the grouting hole pipe at an end away from the slurry tank, the grouting hole pipe is connected to the water pressure control valve, the water diversion pipe, and the conical top cover in sequence at a side away from the grouting pipe, and the draining pipe is connected to the water pressure control valve at an end away from the water pump.

[0026] The grouting hole sleeve is used to be located at a first position to expose the grouting holes during grouting and to be located at a second position to close the grouting holes during non-grouting.

[0027] The water pressure control valve is used to detect a first water pressure in the draining pipe and to open the water pressure control valve for draining when the first water pressure is greater than a first threshold value.

[0028] Optionally, the water pressure control valve comprises a second pressure sensor, a draining small pipe, and a small pipe valve.

[0029] The second pressure sensor is used to detect the first water pressure in the draining pipe, and the small pipe valve is used to conduct the draining small pipe to drain when the first water pressure is greater than the first threshold value.

[0030] Optionally, the water-rich karst tunnel water blocking and draining device further comprises:

[0031] A water pressure gauge is located on the water tank body; the water pressure gauge is used to detect a second water pressure in the water tank, so that an operator can determine whether to perform grouting based on the second water pressure.

[0032] Optionally, the water tank further comprises a drain pipe with a valve, and the drain pipe with a valve is used to drain the water in the water tank.

[0033] Optionally, the water-rich karst tunnel blocking and drainage device further includes:

[0034] The cart comprises a storage plate, wheels and a handle. The storage plate is used to place the water-rich karst tunnel blocking and drainage device. The wheels are located on the side of the storage plate away from the water-rich karst tunnel blocking and drainage device.

[0035] Optionally, the water-rich karst tunnel blocking and drainage device further includes:

[0036] The stirring mechanism is connected to the output end of the second motor and is used for stirring the slurry.

[0037] Optionally, the water-rich karst tunnel blocking and drainage device further includes:

[0038] A power distribution cabinet, used for controlling the power supply and operation of the first motor and the second motor;

[0039] An electrical box; the electrical box is provided with a battery pack, an inverter and a transformer for converting the first voltage output by the battery pack into a second voltage;

[0040] The voltage value of the first voltage is greater than the voltage value of the second voltage.

[0041] The technical solution provided by this application has the following advantages compared with the existing technology:

[0042] The present application provides a water-rich karst tunnel plugging and drainage device, comprising: a water pump, a booster pump, a first motor, a second motor and a motor control module; the first motor is connected to the water pump, the second motor is connected to the booster pump, and both the first motor and the second motor are connected to the motor control module; the motor control module is used to control the second motor to start after the first motor starts, and to control the second motor to stop after the first motor stops; the first motor is used to drive the water pump to extract drainage from the water-rich rock formation; the second motor is used to drive the booster pump to increase pressure during grouting.

[0043] In this way, the first motor is started by the motor control module, the first motor is used to drive the water pump to extract the water in the water-rich rock stratum, and drainage is performed, after the drainage is completed, the second motor is started by the motor control module, the second motor is used to drive the booster pump to increase the pressure during grouting, at the same time, the first motor is still in a working state, the water pump is controlled to continuously run, and water and thin slurry are extracted, so that the grouting and plugging operation is further realized, after the grouting and plugging operation is completed, the first motor is closed by the motor control module, the water pump is stopped, then the second motor is closed by the motor control module, the booster pump is stopped, and the drainage and plugging operation is completed.

[0044] In this way, the control effect of "draining water first, then grouting, and then cooperating" is realized, at the same time, the water in the water-rich rock stratum is extracted to dilute the slurry, so that the slurry can be further prevented from blocking the pipeline, additional water is not needed to dilute the slurry, the cost can be reduced, and the drainage device is more portable, timely stopping of drainage can make the overall working process more stable, orderly starting and stopping of the water pump and the booster pump are realized, the coordination between water plugging and drainage is ensured, and the overall working efficiency of the drainage device is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0045] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate an embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows, and obviously, other drawings can be obtained by those skilled in the art without any creative labor.

[0047] Figure 1 A perspective structural view of a water-rich karst tunnel water plugging and draining device is provided for the embodiments of the present application;

[0048] Figure 2 A perspective structural view of a water-rich karst tunnel water plugging and draining device is provided for the embodiments of the present application;

[0049] Figure 3 A circuit diagram of a motor control module is provided for the embodiments of the present application;

[0050] Figure 4 A perspective structural view of a box body is provided for the embodiments of the present application;

[0051] Figure 5 A perspective structural view of a box body is provided for the embodiments of the present application; Figure 4 A top view structural view of the box body is shown;

[0052] Figure 6 A structural diagram of a composite sleeve pipe provided by an embodiment of the present application is shown in the figure;

[0053] Figure 7 A structural diagram of a composite pipe head when the grouting hole sleeve is located at the first position is shown in the figure;

[0054] Figure 8 A structural diagram of a composite pipe head when the grouting hole sleeve is located at the second position is shown in the figure;

[0055] Figure 9 A structural diagram of a water pressure control valve provided by an embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0056] In order to enable a more clear understanding of the above-mentioned purposes, features and advantages of the present application, the schemes of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0057] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other manners different from those described herein; obviously, the embodiments described in the specification are only a part of the embodiments of the present application, and not all the embodiments.

[0058] The present application provides a water-rich karst tunnel water plugging and drainage device, which has water plugging and drainage functions and can be applied to a water-rich karst tunnel water leakage scene.

[0059] In some embodiments, as shown in Figure 1 or 2, the water-rich karst tunnel water plugging and drainage device comprises a water pumping pump, a booster pump, a first motor 6, a second motor 7 and a motor control module; the first motor 6 is connected with the water pumping pump, the second motor 7 is connected with the booster pump, and the first motor 6 and the second motor 7 are both connected with the motor control module; the motor control module is used for controlling the first motor 6 and the second motor 7 to start or stop according to a set order; the first motor 6 is used for driving the water pumping pump to pump out the water in the water-rich rock stratum and perform a drainage operation; and the second motor 7 is used for driving the booster pump to boost pressure when grouting and perform a water plugging operation.

[0060] Specifically, the first motor 6 and the second motor 7 starting or stopping according to the set order comprises: controlling the second motor 7 to start after the first motor 6 starts, i.e., the second motor 7 can start only after the first motor 6 starts; and controlling the second motor 7 to stop after the first motor 6 stops, i.e., the second motor 7 can stop only after the first motor 6 stops.

[0061] When the drainage operation is performed, the first motor 6 is started to drive the water pump to work, and the water pump extracts the drainage of the water-rich rock stratum. When the water plugging operation is performed, the second motor 7 is started to drive the booster pump to work, and the booster pump pressurizes during grouting. After the first motor 6 and the second motor 7 are both started, the extraction pump and the booster pump work simultaneously, so that the water plugging and the drainage are coordinated.

[0062] In this way, the control effect of "draining first, grouting later, and then cooperating" is achieved, the orderly starting and stopping of the water pump and the booster pump is achieved, and the coordination of the water plugging and the drainage is ensured.

[0063] In some embodiments, as shown in Figure 3 the motor control module includes a first control loop K1 and a second control loop K2, the first control loop K1 and the second control loop K2 are connected in parallel; the first control loop K1 is used to control the starting or stopping of the first motor, and the second control loop K2 is used to control the starting of the second motor after the first motor is started, and to control the stopping of the second motor after the first motor is stopped.

[0064] In some embodiments, as shown in Figure 3 the first control loop K1 includes a first start button SB2, a first stop button SB1, a first coil KM1 of a first relay, and a first normally open contact KM1_NO.1, the first start button SB2, the first stop button SB1, and the first coil KM1 are connected in series, and the first normally open contact KM1_NO.1 is connected in parallel with the first start button SB2; the second control loop K2 includes a second start button SB4, a second stop button SB3, a second normally open contact KM1_NO.2 of the first relay, a second coil KM2 of a second relay, a third normally open contact KM2_NO.3, and a fourth normally open contact KM2_NO.4, the second start button SB4, the second stop button SB3, the second coil KM2, and the third normally open contact KM2_NO.3 are connected in series, the fourth normally open contact KM2_NO.4 is connected in parallel with the second start button SB4, and the second stop button SB3 and the third normally open contact KM2_NO.3 are connected in parallel with the second normally open contact KM1_NO.2.

[0065] In this embodiment, the motor control module further includes a main loop, the main loop includes a first main loop and a second main loop connected in parallel, the first main loop includes the first motor and a fifth normally open contact KM1_NO.5 of the first relay connected in series, and the second main loop includes the second motor and a sixth normally open contact KM2_NO.6 of the second relay connected in series.

[0066] When the first start button SB2 of the first motor is pressed, the first control circuit K1 is turned on, the first coil KM1 is powered, and the normally open contact of the first relay is switched to the closed state, i.e., the first normally open contact KM1_NO.1, the second normally open contact KM1_NO.2 and the fifth normally open contact KM1_NO.5 are switched to the closed state, and the first motor starts. Then the second start button SB4 is pressed, the second control circuit K2 is turned on, the second coil KM2 is powered, and the normally open contact of the second relay is switched to the closed state, i.e., the third normally open contact KM2_NO.3, the fourth normally open contact KM2_NO.4 and the sixth normally open contact KM2_NO.6 are switched to the closed state, and the second motor starts.

[0067] If the second start button SB4 of the second motor is pressed first, since the second normally open contact KM1_NO.2 in the second control circuit K2 is in the open state, the second control circuit K2 is not turned on, the second coil KM2 is not powered, and the second motor cannot be started. At this time, the second start button SB4 cannot play its role, and only when the first start button SB2 is pressed and the first coil KM1 is powered, the second normally open contact KM1_NO.2 is switched to the closed state, and at this time, the second start button SB4 and the second motor can be started.

[0068] After the first motor and the second motor are both started, when the first stop button SB1 of the first motor is pressed, the first control circuit K1 is disconnected, the first coil KM1 loses power, and the normally open contact of the first relay is switched to the open state, i.e., the first normally open contact KM1_NO.1, the second normally open contact KM1_NO.2 and the fifth normally open contact KM1_NO.5 are switched to the open state, and the first motor stops. Then the second stop button SB3 is pressed, the second control circuit K2 is disconnected, the second coil KM2 loses power, and the normally open contact of the second relay is switched to the open state, i.e., the third normally open contact KM2_NO.3, the fourth normally open contact KM2_NO.4 and the sixth normally open contact KM2_NO.6 are switched to the open state, and the second motor stops.

[0069] After the first motor and the second motor are both started, if the second stop button SB3 of the second motor is pressed first, since the second normally open contact KM1_NO.2 in the second control circuit K2 is still in the closed state, the circuit in which the second stop button SB3 is located is short-circuited, the second stop button SB3 does not work, the second normally open contact KM1_NO.2 and the fourth normally open contact KM2_NO.4 are both in the closed state, and the second coil KM2 is still powered, so the second motor cannot be stopped. Only when the first stop button SB1 of the first motor is pressed first and KM1 loses power, the second normally open contact KM1_NO.2 is switched to the open state, and at this time the second stop button SB3 is pressed, the second motor can be stopped.

[0070] The water-rich karst tunnel water blocking and draining device provided by the embodiment comprises a motor control module, a water tank and a slurry tank.

[0071] In some embodiments, as shown in Figure 4 The water-rich karst tunnel water blocking and draining device further comprises a water tank 32 and a slurry tank 31.

[0072] The water tank 32 is used for storing water drained from the water-rich rock layer, and the slurry tank is used for storing slurry used for blocking. Figure 1 The output shaft of the first motor 6 passes through the motor pipe hole 37 on the water tank 32 and is connected with the water pump in the water tank 32, so as to drive the water pump to extract water from the water-rich rock layer. The output shaft of the second motor 7 passes through the motor pipe hole 37 on the slurry tank 31 and is connected with the booster pump in the slurry tank 31, so as to drive the booster pump to increase pressure during grouting.

[0073] In some embodiments, the water tank and the slurry tank are collectively referred to as a tank body, and the tank body further comprises an upper cover plate used for closing the water tank and the slurry tank.

[0074] In some embodiments, the water-rich karst tunnel water blocking and draining device further comprises a stirring mechanism.

[0075] The stirring mechanism is located in the slurry tank and is connected with the output end of the second motor, and the stirring mechanism stirs the slurry under the drive of the second motor.

[0076] In some embodiments, the stirring mechanism comprises a rotating blade.

[0077] In some embodiments, as shown in Figures 4-5 The water-rich karst tunnel water blocking and draining device further comprises a filter screen, a first pressure sensor and a water amount control valve.

[0078] The water tank 32 and the slurry tank 31 are communicated through a first opening, the filter screen 35 covers the first opening, the first pressure sensor 36 is located in the slurry tank 31, and the water amount control valve 39 is located on the side of the filter screen 35 close to the water tank 32.

[0079] Exemplarily, as shown in Figure 4The first pressure sensor 36 is located on one side of the filter screen 35 close to the slurry tank 31, and the water volume control valve 39 is located on the other side of the filter screen 35 close to the water tank 32. By installing the water volume control valve 39 on the filter screen 35, the water in the water tank 32 flows into the slurry tank 31, and the slurry in the slurry tank 31 cannot flow back into the water tank 32.

[0080] The first pressure sensor 36 is connected to the water volume control valve 39. The first pressure sensor 36 is used to detect the slurry concentration, expressed in percentage. The water volume control valve 39 is used to open or stop the injection of water in the water tank 32 into the slurry tank 31 according to the slurry concentration, so that the slurry concentration is maintained within the appropriate concentration range, which is beneficial to improve the plugging effect and enhance the reliability of the tunnel water plugging.

[0081] The slurry concentration in the slurry tank 31 is 80% to 94%, and the slurry concentration for grouting plugging is 33% to 63%. After the water pump is started, the slurry concentration in the slurry tank is relatively large at this time, the water volume control valve 39 opens to inject water in the water tank 32 into the slurry tank 31 to dilute the slurry, and when the slurry concentration is within the appropriate concentration range, the water volume control valve 39 stops injecting water in the water tank 32 into the slurry tank 31.

[0082] In some embodiments, the water volume control valve includes a relay and a control valve; the relay is used to energize the relay when the slurry concentration is greater than a first set concentration, the control valve is in an open state to inject water in the water tank into the slurry tank, and the relay is de-energized when the slurry concentration is less than a second set concentration, the control valve is in a closed state to stop injecting water in the water tank into the slurry tank; wherein the first set concentration is greater than the second set concentration. Exemplarily, the first set concentration is 60%, and the second set concentration is 45%, when the slurry concentration is greater than 60%, the current signal of the first pressure sensor makes the coil of the relay energized, the electromagnet of the control valve is attracted, and the control valve is opened, the water in the water tank 32 is injected into the slurry tank 31; when the slurry concentration is less than 45%, the current signal of the first pressure sensor is weakened, the coil of the relay is de-energized, and the control valve is closed, the water in the water tank 32 stops being injected into the slurry tank 31, thereby accurately controlling the slurry concentration.

[0083] In some embodiments, the surface of the water volume control valve 39 is provided with a waterproof protective coating for protecting the internal electrical components of the water volume control valve 39.

[0084] In some embodiments, as Figure 4 and Figure 6As shown, the water-rich karst tunnel plugging and draining device further comprises a draining pipe 21 and a grouting pipe 22, the draining pipe 21 is located inside the grouting pipe 22; the slurry tank 31 comprises a grouting pipe hole 33, the water tank 32 comprises a draining pipe hole 34 on the side close to the slurry tank 31; the draining pipe 21 is connected with the water tank 32 through the draining pipe hole 34, and the grouting pipe 22 is connected with the slurry tank 31 through the grouting pipe hole 33.

[0085] In this embodiment, the draining pipe 21 and the grouting pipe 22 adopt a nested structure to form a composite sleeve 2, the draining pipe 21 is located inside the grouting pipe 22, the draining pipe 21 is responsible for transporting the water drained from the water-rich rock layer into the water tank 32, and the grouting pipe 22 is used for transporting the plugging slurry, both of which work independently and cooperatively to realize the functions of water plugging and draining.

[0086] In some embodiments, as shown in Figures 7-9 As shown, the water-rich karst tunnel plugging and draining device further comprises a composite pipe head 1. The composite pipe head 1 comprises a conical top cover 11, a water guide pipe 12, a grouting hole pipe 13, a grouting hole sleeve 14, and a water pressure control valve 15, the grouting hole pipe 13 comprises a plurality of grouting holes.

[0087] As shown in Figure 6 , the grouting pipe 22 is connected with the grouting hole pipe 13 at the end away from the slurry tank, the grouting hole pipe 13 is sequentially connected with the water pressure control valve 15, the water guide pipe 12, and the conical top cover 11 at the side away from the grouting pipe, and the draining pipe 21 is connected with the water pressure control valve 15 at the end away from the water pump.

[0088] As shown in Figure 7 , when grouting, the grouting hole sleeve 14 is located at the first position to expose the grouting holes, and the slurry flows out through the grouting holes. As shown in Figure 8 , when not grouting (for example, when draining), the grouting hole sleeve 14 is located at the second position, and the grouting hole sleeve 14 is nested with the grouting hole pipe 13 to close the grouting holes, so that the slurry cannot flow out through the grouting holes.

[0089] The water pressure control valve 15 is used to detect the first water pressure in the draining pipe, and when the first water pressure is greater than a first threshold value, the water pressure control valve is opened to drain water, so as to avoid device failure caused by abnormal water pressure and ensure safe and stable operation of the device.

[0090] The top end of the composite pipe head 1 is conical (i.e., the conical top cover 11), which facilitates insertion of the composite pipe head 1 into the hole drilled in the tunnel lining. The water guide pipe 12 is provided with a second opening 121 covered with a filter screen, the filter screen allows water and thin slurry to pass through, and the water and thin slurry in the water-rich karst rock of the tunnel are introduced into the draining pipe 21.

[0091] In some embodiments, as shown in Figure 9As shown, the water pressure control valve 15 comprises a second pressure sensor 151, a small drain pipe 152, and a small pipe valve 153; the second pressure sensor 151 is used to detect the first water pressure in the drain pipe, and the small pipe valve is used to open the small drain pipe when the first water pressure is greater than the first threshold value, and to drain water.

[0092] The second pressure sensor 151 comprises a water pressure sensor for detecting the first water pressure in the drain pipe; the small pipe valve 153 is located in the passage of the small drain pipe 152, and the small pipe valve 153 is opened to open the small drain pipe 152, and the small pipe valve 153 is closed to close the small drain pipe 152. When the first water pressure exceeds the first threshold value, the small pipe valve 153 on the small drain pipe 152 automatically opens the water pressure relief, avoiding device failure caused by abnormal water pressure, and ensuring stable operation of the device.

[0093] In some embodiments, as shown in the Figure 4 As shown, the water-rich karst tunnel water blocking and draining device further comprises a water pressure gauge 38; the water pressure gauge 38 is located on the tank body of the water tank 32, and the water pressure gauge 38 is used to detect the second water pressure in the water tank 32, so that the operator can determine whether to perform grouting according to the second water pressure.

[0094] The water pressure gauge 38 is used to detect the second water pressure in the water tank 32, and the second water pressure can reflect the change of the water pressure in the tunnel.

[0095] In this embodiment, the water pressure gauge 38 is embedded in the tank body of the water tank 32, which can not only detect the second water pressure in the water tank 32, but also facilitate the operator to observe the second water pressure. When the reading of the water pressure gauge 38 (i.e. the second water pressure) no longer changes greatly, it indicates that the water draining is basically completed, and the operator opens the grouting hole sleeve in time to start grouting.

[0096] In some embodiments, as shown in the Figure 2 or Figure 5 As shown, the water tank 32 further comprises a valve-equipped drain pipe 8, which is used to drain water from the water tank 32.

[0097] As shown in the Figure 2 As shown, the first electrode and the second electrode are located on one side of the water tank 32, and the valve-equipped drain pipe 8 is located at the bottom of the other side of the water tank 32, so that the water in the water tank 32 can be introduced into the outside for use or drained after the operation.

[0098] In some embodiments, as shown in the Figure 1 As shown, the water-rich karst tunnel water blocking and draining device further comprises a trolley, which comprises a storage flat plate 41, wheels 42, and a handle 43; the storage flat plate 41 is used to place the water-rich karst tunnel water blocking and draining device, and the wheels 42 are located on the side of the storage flat plate 41 away from the water-rich karst tunnel water blocking and draining device.

[0099] In this embodiment, the main structure of the device (such as a box) is placed on a storage flat plate 41 of a cart, and four rotatable wheels 42 are installed at the bottom of the cart, so that the device can be flexibly moved in a complex environment, easily avoiding obstacles such as tools and materials piled in the tunnel, and quickly reaching the work site without affecting water blocking and drainage operations.

[0100] In some embodiments, the wheels include casters.

[0101] In some embodiments, as Figure 1 As shown, the water-rich karst tunnel plugging and drainage device also includes: a power distribution cabinet 5, which is used to control the power supply and operation of the first motor 6 and the second motor 7.

[0102] In some embodiments, as Figure 2 As shown, the water-rich karst tunnel plugging and drainage device also includes: an electrical box 9; a battery pack, an inverter and a transformer are provided in the electrical box 9, which are used to convert the first voltage output by the battery pack into a second voltage; wherein the voltage value of the first voltage is greater than the voltage value of the second voltage.

[0103] The first voltage is low-voltage direct current, and the second voltage is high-voltage alternating current.

[0104] In this embodiment, an electrical box 9 is used to provide power to the device, ensuring normal operation even without an external power supply, thereby improving the adaptability of the device in different tunnel environments and meeting the diverse needs of tunnel construction.

[0105] In some embodiments, as Figure 3 As shown, the first control loop K1, the second control loop K2 and the main loop are all connected to an AC power supply.

[0106] The AC power supply includes an electrical box or an external power supply.

[0107] It should be noted that the motor control module also includes all electronic devices known to those skilled in the art, such as the first circuit breaker QF1, the second circuit breaker QF2 and the third circuit breaker QF3 (such as Figure 3 shown).

[0108] When using the water-rich karst tunnel plugging and drainage device for water plugging and drainage operations, the specific process is as follows:

[0109] (1) The operator first pushes the device to the location in the tunnel where water blocking and drainage operations are required. After arriving, the operator checks the battery box to ensure that the device has sufficient power.

[0110] (2) Turn on the power distribution cabinet, press the first start button (SB2) of the first motor connected with the water pump, and the water pump in the water tank starts to work. At this time, the conical top cover of the composite pipe head has been inserted into the hole made in the tunnel lining, and the water in the tunnel enters the drainage pipe through the water pipe, and the drainage pipe transports the water to the water tank.

[0111] (3) The operator closely observes the change of the water pressure gauge, and when the water pressure gauge no longer changes, it indicates that the drainage is basically completed, the grouting hole sleeve is opened, and the second start button (SB4) of the second motor connected with the booster pump is pressed, and the booster pump in the slurry tank starts to work. The booster pump injects the slurry in the slurry tank into the tunnel lining hole through the grouting pipe and the grouting hole for grouting and plugging. In this process, the water pump continues to run to extract water and dilute slurry, and since there is a filter screen between the water tank and the slurry tank, the water in the water tank can enter the slurry tank.

[0112] (4) During the grouting and plugging process, the operator should pay attention to the condition of the composite pipe head. When the composite pipe head starts to move outward, it indicates that the grouting and plugging has reached a certain effect. At this time, the first motor stop button (SB1) is pressed first to stop the water pump, and then the second motor stop button (SB3) is pressed to stop the booster pump, and the drainage and water plugging operation is completed. Turn off the power distribution cabinet and end this operation.

[0113] It should be noted that in this document, relational terms such as“first” and“second”, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms“comprises”,“comprising”, or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by“comprises a...” does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0114] The above description is merely one specific implementation of the application, and enables those skilled in the art to understand or implement the application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the application will not be limited to these embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water-rich karst tunnel water blocking and draining device, characterized in that, The utility model relates to a water pump, booster pump, first motor, second motor and motor control module are included. The first motor is connected with the water pump, the second motor is connected with the booster pump, and the first motor and the second motor are connected with the motor control module. The motor control module is used for controlling the second motor to start after the first motor starts and to stop after the first motor stops. The motor control module includes a first control loop and a second control loop, and the first control loop and the second control loop are connected in parallel.

2. The water-enriched karst tunnel water blocking and draining device according to claim 1, characterized in that, The first control loop is used for controlling the start or stop of the first motor, and the second control loop is used for controlling the start of the second motor after the start of the first motor and the stop of the second motor after the stop of the first motor. The first control loop includes a first start button, a first stop button, a first coil of a first relay and a first normally open contact, the first start button, the first stop button and the first coil are connected in series, and the first normally open contact is connected in parallel with the first start button.

3. The water-enriched karst tunnel water blocking and draining device according to claim 2, characterized in that, The second control loop includes a second start button, a second stop button, a second normally open contact of the first relay, a second coil of a second relay, a third normally open contact and a fourth normally open contact, the second start button, the second stop button, the second coil and the third normally open contact are connected in series, the fourth normally open contact is connected in parallel with the second start button, and the second stop button and the third normally open contact are connected in parallel with the second normally open contact. The utility model further includes a water tank and a slurry tank, the water tank is communicated with the slurry tank through a first opening.

4. The water-enriched karst tunnel water blocking and draining device according to claim 1, characterized in that, A filter screen covers the first opening. A first pressure sensor is located in the slurry tank and is used for detecting the concentration of slurry. A water amount control valve is located on the side of the filter screen close to the water tank and is connected with the first pressure sensor. The water amount control valve includes a relay and a control valve. When the concentration of slurry is greater than a first set concentration, the relay is powered on, the control valve is in an open state, water in the water tank is injected into the slurry tank, and when the concentration of slurry is lower than a second set concentration, the relay is powered off, the control valve is in a closed state, and the injection of water from the water tank into the slurry tank is stopped.

5. The water-enriched karst tunnel water blocking and draining device according to claim 4, characterized in that, The first set concentration is greater than the second set concentration. The utility model further includes a drainage pipe and a grouting pipe, the drainage pipe is located in the grouting pipe. The slurry tank includes a grouting pipe hole, and the side of the water tank close to the slurry tank includes a drainage pipe hole.

6. The water-enriched karst tunnel water blocking and draining device according to claim 4, characterized in that, The utility model further includes a composite pipe head, which includes a conical top cover, a water guide pipe, a grouting hole pipe, a grouting hole sleeve and a water pressure control valve, and the grouting hole pipe includes a plurality of grouting holes. ​ ​ 7. The water-enriched karst tunnel drainage blocking device according to claim 6, characterized in that, ​ ​ An end of the grouting pipe away from the slurry tank is connected with the grouting hole pipe, a side of the grouting hole pipe away from the grouting pipe is connected with the water pressure control valve, the water diversion pipe and the conical top cover in sequence, and an end of the drainage pipe away from the water pump is connected with the water pressure control valve. The grouting hole sleeve is used to be located at the first position to expose the grouting hole during grouting and to be located at the second position to close the grouting hole during non-grouting. The water pressure control valve is used to detect a first water pressure in the drainage pipe, and to open the water pressure control valve to drain water when the first water pressure is greater than a first threshold value.

8. The water-enriched karst tunnel drainage blocking device according to claim 7, characterized in that, The water pressure control valve comprises a second pressure sensor, a drainage small pipe and a small pipe valve. The second pressure sensor is used to detect the first water pressure in the drainage pipe, and the small pipe valve is used to conduct the drainage small pipe to drain water when the first water pressure is greater than the first threshold value.

9. The water-rich karst tunnel water blocking and draining device according to claim 4, characterized in that, Further comprising: A water pressure gauge is located on a tank body of the water tank, and the water pressure gauge is used to detect a second water pressure in the water tank to enable an operator to determine whether to perform grouting according to the second water pressure.

10. The water-enriched karst tunnel drainage blocking device according to claim 4, characterized in that, The water tank further comprises a valve-equipped drainage pipe for draining water in the water tank.

11. The water-enriched karst tunnel drainage blocking device according to claim 1, characterized in that, Further comprising: A trolley comprises a storage flat plate, wheels and a handle, the storage flat plate is used to place the water-rich karst tunnel drainage device, and the wheels are located on a side of the storage flat plate away from the water-rich karst tunnel drainage device.

12. The water-enriched karst tunnel drainage blocking device according to claim 1, characterized in that, Further comprising: A stirring mechanism is connected with an output end of the second motor and is used to stir slurry.

13. The water-enriched karst tunnel drainage blocking device according to claim 1, characterized in that, Further comprising: A power distribution cabinet is used to control power supply and operation of the first motor and the second motor. An electric tank is provided. The electric tank is provided with a battery pack, an inverter and a transformer, and is used to convert a first voltage output by the battery pack into a second voltage. The voltage value of the first voltage is greater than the voltage value of the second voltage.

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