Grouting device for controlling water inrush in underground engineering and method for controlling water inrush in underground engineering

Abstract

The present application relates to the technical field of mine water inrush treatment, and provides a grouting device for underground engineering water inrush treatment and a method for underground engineering water inrush treatment. The grouting device for underground engineering water inrush treatment includes: an outer casing pipe and an inner pipe. An operation pipe section is formed at the first end of the inner pipe, and a discharge pipe section is formed at the second end of the inner pipe. A first slurry inlet is provided on the operation pipe section, and a plurality of first slurry outlets are provided on the discharge pipe section; a drilling structure, including a rotating shaft, a first fitting column, a second fitting column and a drill bit. The first fitting column is rotatably and movably in sealing fit with the inner wall of the first end of the inner pipe, and the second fitting column is rotatably and movably in sealing fit with the inner wall of the second end of the inner pipe. The drill bit is connected to the side of the second fitting column away from the first fitting column and is located outside the inner pipe; a driving mechanism, which can drive the drilling structure to rotate around the axis of the rotating shaft. The grouting device for underground engineering water inrush treatment can save the types and quantities of construction devices to be carried and is convenient to operate.

Description

Technical Field

[0001] This application relates to the technical field of mine water inrush treatment, and more specifically, to a grouting device for underground engineering water inrush treatment and a method for underground engineering water inrush treatment. Background Art

[0002] The amount and inflow state of water inrush in underground engineering (such as mines) directly affect the construction and production of mines. Usually, mine water inrush continuously and slowly flows into the underground, and is discharged to the ground through underground drainage equipment, without affecting the normal progress of mine construction and production. However, in some cases, this water will suddenly pour into the underground working space in a large amount in a short time. In the lightest case, it will wash away equipment and cause production interruption in a local area. In the most serious case, it will cause casualties and even lead to a mine flooding accident, resulting in extremely serious consequences. Therefore, preventive measures must be taken against mine water disasters to ensure safe production. The prevention and control of mine water disasters mainly start from two aspects, namely surface water prevention and underground water prevention. After the closure of the mine, due to the ineffective measures for mine closure, the problem of environmental pollution caused by the unregulated discharge of mine water inrush exceeding the standard is becoming increasingly prominent.

[0003] Grouting plugging is a common method for plugging mine water inrush. Its principle is to inject a specific grout at the water inrush port, so that the grout forms a barrier at the water inrush port, thereby preventing the continuous outflow of water inrush. The selection of grouting materials should be based on factors such as the nature of the water inrush, the amount of water inrush, and the water inrush pressure. Commonly used grouting materials include cement slurry, polyurethane slurry, epoxy resin slurry, etc. The advantage of grouting plugging is good plugging effect, and it can be adjusted according to different water inrush situations. However, it is necessary to pay attention to the control of the concentration and flow rate of grouting to avoid secondary pollution.

[0004] During the process of coal mining and excavation production, it is usually necessary to arrange inclined roadways to facilitate the connection of horizontal roadways at different levels and meet the needs of safe production. The inclination angle of coal mine inclined roadways generally does not exceed 30°. As the most typical inclined roadway, the inclined shaft shaft passes through the underground aquifer during the tunneling construction process. Therefore, the key step in the corresponding water inrush treatment is to drill a group of holes around the inclined shaft shaft and inject grout through these holes for plugging. This requires using drilling tools to drill holes first, and then removing the drilling tools and using an additional grouting device to grout and plug at the drilling position. In special areas (such as roof fall areas), a lengthened grouting device is also required, resulting in a very cumbersome water inrush plugging process, and the types and quantities of construction devices carried are too many, often leading to an increase in the carrying workload. Summary of the Invention

[0005] In view of this, this application provides a grouting device for underground engineering water inrush treatment to solve the technical problems of cumbersome operation in the grouting plugging process of underground engineering water inrush treatment in the prior art and too many types and quantities of construction devices carried.

[0006] The present application provides a grouting device for controlling water inrush in underground engineering. Among them, the grouting device for controlling water inrush in underground engineering includes:

[0007] An outer sleeve, and an inner tube movably disposed along the axis of the outer sleeve and passing through the outer sleeve. A first end of the inner tube forms an operation pipe section that extends out of the first end of the outer sleeve. A second end of the inner tube forms a discharge pipe section that extends out of the second end of the outer sleeve. The operation pipe section has a first slurry inlet, and the discharge pipe section has a plurality of first slurry outlets.

[0008] A drilling structure, including a rotating shaft disposed coaxially with the inner tube and passing through the inner tube, a first fitting column, a second fitting column, and a drill bit disposed on the rotating shaft. The first fitting column is rotatably and movably in sealing cooperation with the inner wall of the first end of the inner tube. The second fitting column is rotatably and movably in sealing cooperation with the inner wall of the second end of the inner tube. The drill bit is connected to a side of the second fitting column away from the first fitting column and is located outside the inner tube.

[0009] A driving mechanism, which is installed at the first end of the inner tube and is capable of driving the drilling structure to rotate around the axis of the rotating shaft.

[0010] Further, a second slurry inlet is formed at the first end of the outer sleeve. The first end of the outer sleeve is in sealing cooperation with the operation pipe section of the inner tube. There is a discharge gap between the inner wall of the second end of the outer sleeve and the outer peripheral wall of the inner tube.

[0011] Further, a transmission component is disposed on the rotating shaft. The driving mechanism is movably installed at the first end of the inner tube through a guiding mechanism so as to be able to move to a transmission cooperation position and a transmission separation position. When the driving mechanism moves to the transmission cooperation position, it is in transmission connection with the transmission component to be able to drive the transmission component to rotate around the axis of the rotating shaft. When the driving mechanism moves to the transmission separation position, it is separated from the transmission component.

[0012] Further, the guiding mechanism includes a first slide rail, a first slider, a second slide rail and a second slider. The length direction of the first slide rail is parallel to the axis of the inner tube. The first slider is slidably mounted on the first slide rail along the length direction of the first slide rail. The second slide rail is disposed on the first slider. The length direction of the second slide rail is perpendicular to the axis of the inner tube. The second slider is slidably mounted on the second slide rail along the length direction of the second slide rail. The driving mechanism includes a driving motor disposed on the second slider and a first gear connected to the output shaft of the driving motor. The axis of the output shaft of the driving motor is parallel to the axis of the inner tube. The transmission component is a second gear. At the transmission cooperation position, the first gear meshes with the second gear.

[0013] Further, the grouting device for controlling water inrush in underground engineering includes a first limiting circular plate and a second limiting circular plate respectively connected to two axial ends of the second gear. When the first gear meshes with the second gear, the first gear is axially limited between the first limiting circular plate and the second limiting circular plate.

[0014] Further, the second mating post forms an axial channel that penetrates axially in both directions. The drill bit is a conical head. The tip of the conical head faces away from the second mating post. The circular bottom surface of the conical head is connected to the second mating post through a connecting pipe. The conical head is formed with an inner cavity channel arranged along its axis and a plurality of injection hole channels arranged around the axis of the conical head. The first end of the inner cavity channel penetrates out of the circular bottom surface. The second end of the inner cavity channel terminates inside the conical head and is adjacent to the tip of the conical head. The first end of the injection hole channel communicates with the second end of the inner cavity channel. The second end of the injection hole channel penetrates out of the circular bottom surface and is spaced on the outer peripheral side of the connecting pipe. The injection hole channel extends along an inclined line at an angle along the axis of the conical head. The axial channel of the second mating post is communicated with the inner cavity channel through the connecting pipe. The projection of the circular bottom surface along the axial direction of the outer sleeve covers the outer sleeve. The outer diameter of the connecting pipe is smaller than the diameter of the circular bottom surface and the outer diameter of the second mating post.

[0015] Further, a sealing ring is mounted on the circular bottom surface of the conical head. When the second mating post moves towards the first end of the inner tube until the circular bottom surface of the conical head contacts the end face of the second end of the inner tube, the sealing ring seals around the outer peripheral wall of the inner tube. The sealing ring surrounds the second ends of the injection hole channels at intervals.

[0016] Further, a plurality of radial channels extending along the radial direction thereof are formed on the second mating post. The first end of the radial channel communicates with the axial channel, and the second end of the radial channel penetrates through the outer periphery of the second mating post to form a second slurry outlet. The number and positions of the radial channels correspond to those of the first slurry outlets, so that the second mating post can rotate to a first position where some of the first slurry outlets are blocked and to a second position where each of the first slurry outlets is aligned with a corresponding second slurry outlet.

[0017] In addition, the present invention also provides a method for controlling water inrush in underground engineering. In this method, the above-described water inrush control grouting device is used for drilling and grouting plugging operations.

[0018] Further, the method for controlling water inrush in underground engineering includes the steps of:

[0019] S1. Take the water inrush control grouting device for underground engineering, adjust the position of the first slider on the first slide rail and the position of the second slider on the second slide rail, so that after the first gear meshes with the second gear, the first slider is locked on the first slide rail and the second slider is locked on the second slide rail. Start the driving motor to start the drill bit of the water inrush control grouting device for underground engineering, and make the drill bit of the water inrush control grouting device for underground engineering drill and detect the cavity range on the inclined shaft water outlet level, and measure the water inrush volume in the cavity area.

[0020] S2. Use filling materials to fill and treat the water inrush in the cavity area.

[0021] S3. Start the drill bit of the water inrush control grouting device for underground engineering to drill holes in a row-by-row manner from top to bottom on the inclined shaft water outlet level.

[0022] S4. Install grouting pipes in the holes drilled in step S3, and use a plurality of the water inrush control grouting devices for underground engineering to perform repeated grouting for plugging water in the roof fall area one by one corresponding to each row-by-row. In the grouting for plugging water, slurries are input through the first slurry inlet and the second slurry inlet, so that the slurries flow out from a plurality of first slurry outlets and from the discharge gap between the inner wall of the second end of the outer sleeve and the outer peripheral wall of the inner tube to the grouting area. When grouting for the roof fall area, the circular bottom surface of the conical head does not contact the end surface of the second end of the inner tube, so that part of the slurry can also be sprayed obliquely and reversely from the second ends of the respective injection channels, and the second mating post is rotated to the second position where each of the first slurry outlets is aligned with a corresponding second slurry outlet, so that part of the slurry can pass through the axial channel and the radial channel of the second mating post and be radially sprayed out from each first slurry outlet. When grouting for the non-roof fall area, the circular bottom surface of the conical head contacts the end surface of the second end of the inner tube, so that the second end of the inner tube is blocked.

[0023] The beneficial effects of the grouting device for controlling water inrush in underground engineering provided by the present invention are as follows:

[0024] Compared with the prior art, since the grouting device for controlling water inrush in underground engineering provided by the present invention has an inner pipe and a drilling structure, it has dual functions of grouting and drilling. When used for controlling water inrush in underground engineering, the types and quantities of construction devices to be carried can be saved. When grouting is required, grouting is carried out through the inner pipe. When drilling is required, only the driving mechanism at the first end of the inner pipe needs to be opened, making the grouting and drilling operations very convenient.

[0025] In a further solution, a second slurry inlet is formed at the first end of the outer sleeve. The first end of the outer sleeve is sealingly fitted with the operating pipe section of the inner pipe. There is a discharge gap between the inner wall of the second end of the outer sleeve and the outer peripheral wall of the inner pipe. Outputting the slurry from the second slurry inlet can also make the slurry flow out through the discharge gap between the inner wall of the second end of the outer sleeve and the outer peripheral wall of the inner pipe for grouting, and it also avoids the backflow of water inrush or other liquids from between the inner wall of the second end of the outer sleeve and the outer peripheral wall of the inner pipe.

[0026] In a further solution, by providing inclined injection channels on the drill bit, the grouting function can also be realized through the injection channels. Especially when the drill bit is near the distal wall surface of the plugging area, the slurry ejected from the injection channels is actually sprayed back obliquely in the reverse direction towards the proximal end of the filling area, so that the slurry can fill the entire plugging area faster, rather than spraying towards the distal wall surface of the plugging area, thus avoiding the phenomenon of excessive injection resistance caused by the distal wall surface of the plugging area. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 Is a three-dimensional schematic diagram of the grouting device for controlling water inrush in underground engineering according to an embodiment of the present application;

[0029] Figure 2 Is Figure 1 The enlarged view of part A in

[0030] Figure 3 Is Figure 1 The enlarged view of part B in

[0031] Figure 4 Is a sectional view of a part of the grouting device for controlling water inrush in underground engineering according to an embodiment of the present application;

[0032] Figure 5 is Figure 4 an enlarged view of location A in

[0033] Figure 6 a partial cross-sectional view of a drilling structure in a grouting device for controlling water gushing in underground engineering according to another embodiment of the present application;

[0034] Figure 7 a schematic diagram showing the arrangement of a grouting pipe in a method for controlling water gushing in underground engineering according to an embodiment of the present application. Detailed implementation manners

[0035] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. One or at least three embodiments of the present application are exemplarily shown in the drawings to make the understanding of the technical solutions disclosed in the present application more accurate and thorough. However, it should be understood that the present application can be implemented in various different forms and is not limited to the embodiments described below.

[0036] In the drawings of the present application, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or position relationship, it is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for exemplary illustration and cannot be understood as a limitation to the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] In addition, if there is a description involving "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is only for the purpose of description and cannot be understood as indicating or implying its relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution where A and B are satisfied simultaneously.

[0038] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0039] Refer to Figures 1 to 6, the present invention provides a grouting device for controlling water inrush in underground engineering. Among them, the grouting device for controlling water inrush in underground engineering includes:

[0040] An outer sleeve 1 and an inner tube 100 that is movably disposed along the axis of the outer sleeve 1 and passes through the outer sleeve 1. An operation pipe section 101 is formed at the first end of the inner tube 100, and the operation pipe section 101 extends out of the first end of the outer sleeve 1. A discharge pipe section 102 is formed at the second end of the inner tube 100, and the discharge pipe section 102 extends out of the second end of the outer sleeve 1. A first slurry inlet 103 is provided on the operation pipe section 101, and a plurality of first slurry outlets 104 are provided on the discharge pipe section 102. An operation handle 105 may also be provided on the outer side of the operation pipe section 101 to facilitate the operator's grip;

[0041] A drilling structure 300, including a rotating shaft 301 that passes through the inner tube 100 and is coaxial with the inner tube 100, a first mating column 302, a second mating column 303, and a drill bit 305 provided on the rotating shaft 301. The first mating column 302 is rotatably and movably sealed and mated with the inner wall of the first end of the inner tube 100 (for example, by providing a sealing bearing, rubber ring, etc. between the first mating column 302 and the inner wall of the first end of the inner tube 100). The second mating column 303 is rotatably and movably sealed and mated with the inner wall of the second end of the inner tube 100 (for example, by providing a sealing bearing, rubber ring, etc. between the second mating column 303 and the inner wall of the second end of the inner tube 100). The drill bit 305 is connected to the side of the second mating column 303 facing away from the first mating column 302 and is located outside the inner tube 100;

[0042] A driving mechanism, which is installed at the first end of the inner tube 100 and can drive the drilling structure 300 to rotate around the axis of the rotating shaft 301.

[0043] Since the grouting device for controlling water inrush in underground engineering provided by the present invention has the inner tube 100 and the drilling structure 300, it has dual functions of grouting and drilling. When used for controlling water inrush in underground engineering, it can save the types and quantities of construction devices to be carried. When grouting is required, grouting is carried out through the inner tube 100. When drilling is required, only the driving mechanism at the first end of the inner tube 100 needs to be turned on, making the grouting and drilling operations very convenient.

[0044] In addition, a second slurry inlet 2 is formed at the first end of the outer sleeve 1. The first end of the outer sleeve 1 is sealingly fitted with the operating pipe section 101 of the inner pipe 100 (for example, by providing a sealing rubber ring between the first end of the outer sleeve 1 and the operating pipe section 101 of the inner pipe 100). There is a discharging gap between the inner wall of the second end of the outer sleeve 1 and the outer peripheral wall of the inner pipe 100. The slurry output from the second slurry inlet 2 can also make the slurry flow out from the discharging gap between the inner wall of the second end of the outer sleeve 1 and the outer peripheral wall of the inner pipe 100 for grouting, and it also avoids the backflow of water gushing or other liquids from between the inner wall of the second end of the outer sleeve 1 and the outer peripheral wall of the inner pipe 100.

[0045] According to an embodiment of the present application, a transmission component is provided on the rotating shaft 301. The driving mechanism is movably installed at the first end of the inner pipe 100 through the guiding mechanism so as to be able to move to the transmission cooperation position and the transmission separation position. When the driving mechanism moves to the transmission cooperation position, it is in transmission connection with the transmission component to be able to drive the transmission component to rotate around the axis of the rotating shaft 301, and when the driving mechanism moves to the transmission separation position, it is separated from the transmission component.

[0046] According to a specific embodiment of the present application, the guiding mechanism includes a first slide rail 3, a first slider 4, a second slide rail 5 and a second slider 6. The length direction of the first slide rail 3 is parallel to the axis of the inner pipe 100. The first slider 4 is slidably installed on the first slide rail 3 along the length direction of the first slide rail 3. The second slide rail 5 is provided on the first slider 4. The length direction of the second slide rail 5 is perpendicular to the axis of the inner pipe 100. The second slider 6 is slidably installed on the second slide rail 5 along the length direction of the second slide rail 5. The driving mechanism includes a driving motor 7 provided on the second slider 6 and a first gear 8 connected to the output shaft of the driving motor 7. The axis of the output shaft of the driving motor 7 is parallel to the axis of the inner pipe 100. The transmission component is a second gear 9. When in the transmission cooperation position, the first gear 8 meshes with the second gear 9.

[0047] In this embodiment, the first slide rail 3 and the second slide rail 5 can be electric guide rails, but preferably guide rails with a pure mechanical structure. In this way, a knob-type locking screw 10 can also be passed through the first slider 4 and the second slider 6, and the first slider 4 can be locked to the first slide rail 3 and the second slider 6 can be locked to the second slide rail 5 through the corresponding knob-type locking screw 10.

[0048] According to an embodiment of the present application, the underground engineering water gushing treatment grouting device includes a first limiting circular plate 11 and a second limiting circular plate 12 respectively connected to the axial two ends of the second gear 9. When the first gear 8 meshes with the second gear 9, the first gear 8 is axially limited between the first limiting circular plate 11 and the second limiting circular plate 12 to prevent axial displacement when the entire drilling structure 300 rotates and works.

[0049] According to a preferred embodiment of the present application, the second mating post 303 forms an axial channel 306 that penetrates bidirectionally along its axis. The drill bit 305 has a conical head, with the tip of the conical head facing away from the second mating post 303. The circular bottom surface of the conical head is connected to the second mating post 303 through a connecting pipe 304. The conical head is formed with an inner cavity channel 309 arranged along its axis and a plurality of injection hole channels 310 arranged around the axis of the conical head. The first end of the inner cavity channel 309 penetrates out of the circular bottom surface, and the second end of the inner cavity channel 309 terminates inside the conical head and is adjacent to the tip of the conical head. The first end of the injection hole channel 310 communicates with the second end of the inner cavity channel 309, and the second end of the injection hole channel 310 penetrates out of the circular bottom surface and is spaced on the outer peripheral side of the connecting pipe 304. The injection hole channel 310 extends along an inclined line at an angle with respect to the axis of the conical head. The axial channel 306 of the second mating post 303 is communicated with the inner cavity channel 309 through the connecting pipe 304. The projection of the circular bottom surface along the axial direction of the outer sleeve 1 covers the outer sleeve 1. The outer diameter of the connecting pipe 304 is smaller than the diameter of the circular bottom surface and the outer diameter of the second mating post 303. In this embodiment, by providing the inclined injection hole channels 310 on the drill bit 305, the grouting function can also be realized through the injection hole channels 310. Especially when the drill bit 305 is near the distal wall surface of the plugging area, the slurry ejected from the injection hole channels 310 actually sprays back obliquely in the reverse direction towards the proximal end of the filling area, so that the slurry can fill the entire plugging area faster, rather than spraying towards the distal wall surface of the plugging area. In this way, the phenomenon that the distal wall surface of the plugging area causes excessive injection resistance will not occur. Moreover, when the inner tube 100 is too long, even if the inner tube 100 blocks (but does not block) the first slurry outlet 104, the drill bit 305 can still extend out of the inner tube 100, and the slurry is ejected through the injection hole channels 310.

[0050] According to an embodiment of the present application, a sealing ring 13 is installed on the circular bottom surface of the conical head. The sealing ring 13 surrounds the second ends of the respective injection hole channels 310 at intervals. When the second mating post 303 moves towards the first end of the inner tube 100 until the circular bottom surface of the conical head contacts the end surface of the second end of the inner tube 100, the sealing ring 13 seals and surrounds the outer peripheral wall of the inner tube 100. In this way, it is completely possible to select whether to enable the injection function of the injection hole channels 310 according to needs.

[0051] See Figure 6, According to a preferred embodiment of the present application, a plurality of radial channels 307 extending along its radial direction are formed on the second mating post 303. The first end of the radial channel 307 communicates with the axial channel 306, and the second end of the radial channel 307 penetrates through the outer periphery of the second mating post 303 to form a second slurry outlet 308. The number and positions of the radial channels 307 correspond to those of the first slurry outlets 104, so that the second mating post 303 can rotate to a first position where it blocks some of the first slurry outlets 104 and rotate to a second position where each of the first slurry outlets 104 is aligned with a corresponding second slurry outlet 308. The beneficial effect of this embodiment is that the number of the first slurry outlets 104 actually performing the spraying work can be controlled by rotating the second mating post 303, and the grouting flow rate can be controlled as needed. For example, the grouting flow rate of the underground engineering water inrush treatment grouting device can be adjusted as appropriate according to the size of the space in the blocked area.

[0052] Of course, as other embodiments, the specific structure of the second mating post 303 can also be as Figure 4 and Figure 5 shown without the radial channels 307. In this embodiment, the length of the second mating post 303 is relatively short to ensure that it does not affect the discharging of the first slurry outlets 104.

[0053] In addition, the present invention also provides a method for treating underground engineering water inrush. In this method, the above-mentioned water inrush treatment grouting device is used for drilling and grouting plugging operations.

[0054] Combined with Figures 1 to 7 it is understood that according to the specific embodiments of the present application, the method for treating underground engineering water inrush includes the steps:

[0055] S1. Take the underground engineering water inrush treatment grouting device, adjust the position of the first slider 4 on the first slide rail 3, and adjust the position of the second slider 6 on the second slide rail 5, so that after the first gear 8 meshes with the second gear 9, lock the first slider 4 to the first slide rail 3 and lock the second slider 6 to the second slide rail 5. Start the drive motor 7 to start the drill bit 305 of the underground engineering water inrush treatment grouting device, and use the drill bit 305 of the underground engineering water inrush treatment grouting device to drill and detect the cavity range on the inclined shaft water outlet layer, and measure the water inrush volume in the cavity area. Among them, use the detection lens to detect the cavity range in the roof fall area, and at the same time use existing equipment to measure the water inrush volume in the cavity area;

[0056] S2. Use filling materials to fill and treat the water inrush in the cavity area. Specifically, drill holes in the roof fall area of the coal mine inclined shaft and install filling pipes. The length of the filling pipes is selected according to the size of the measured cavity, and then some filling materials are selected to fill the cavity area formed in the roof fall area. The filling materials include, but are not limited to, hydrophilic materials such as mesh cloth, cotton and linen, concrete, cement mortar blocks, sand and gravel, soil, industrial waste residues, etc.

[0057] S3. Start the drill bit 305 of the grouting device for underground engineering water inrush treatment to drill holes row by row from top to bottom at the water gushing horizon of the inclined shaft;

[0058] S4. Install grouting pipes in the holes drilled in step S3. Use multiple grouting devices for underground engineering water inrush treatment to pass through each grouting pipe one by one and perform grouting in a row-by-row repetitive manner to plug water in the roof fall area. When the grouting device for underground engineering water inrush treatment passes through the corresponding grouting pipe, fill the coagulant seal between the grouting pipe and the outer sleeve 1. Among them, grouting water plugging is achieved by inputting slurry through the first slurry inlet 103 and the second slurry inlet 2, so that the slurry flows out from multiple first slurry outlets 104 and the discharge gap between the inner wall of the second end of the outer sleeve 1 and the outer peripheral wall of the inner pipe 100 flows into the grouting area. When grouting for the roof fall area, the circular bottom surface of the conical head does not contact the end surface of the second end of the inner pipe 100, so that a part of the slurry can also be sprayed obliquely and reversely from the second end of each injection channel 310, and the second mating column 303 is rotated to the second position where each first slurry outlet 104 is aligned with each corresponding second slurry outlet 308, so that a part of the slurry can pass through the axial channel 306 and the radial channel 307 of the second mating column 303 and be sprayed radially from each first slurry outlet 104. When grouting for the non-roof fall area, the circular bottom surface of the conical head contacts the end surface of the second end of the inner pipe 100, so that the second end of the inner pipe 100 is blocked. Among them, water, cement, fly ash, water glass, etc. are selected as the main grouting materials, and a small amount of organic chemical grouting materials are used as auxiliary for the high roof fall area and local large water gushing area sections. The grouting pipe for the roof fall area is the first grouting pipe 14, and the second grouting pipe 15 is used in other ordinary sections. The first grouting pipe 14 is usually longer than the second grouting pipe 15.

[0059] It should be noted that the above embodiments only represent the preferred embodiments of the present application, and the description is relatively specific and detailed, but it should not be construed as a limitation to the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can be made, such as combining different features in each embodiment, etc., and these should all belong to the protection scope of the present application.

Claims

1. A grouting device for controlling water inrush in underground engineering, characterized in that The grouting device for controlling water inrush in underground engineering includes: an outer sleeve, and an inner pipe movably inserted into the outer sleeve along the axis of the outer sleeve. A first end of the inner pipe forms an operation pipe section that extends out of the first end of the outer sleeve, and a second end of the inner pipe forms a discharge pipe section that extends out of the second end of the outer sleeve. The operation pipe section has a first slurry inlet, and the discharge pipe section has a plurality of first slurry outlets; a drilling structure, including a rotating shaft inserted into the inner pipe and coaxial with the inner pipe, a first fitting column, a second fitting column, and a drill bit provided on the rotating shaft. The first fitting column is rotatably and movably in sealing fit with the inner wall of the first end of the inner pipe, the second fitting column is rotatably and movably in sealing fit with the inner wall of the second end of the inner pipe, and the drill bit is connected to the side of the second fitting column away from the first fitting column and is located outside the inner pipe; a driving mechanism, which is installed at the first end of the inner pipe and can drive the drilling structure to rotate around the axis of the rotating shaft.

2. The grouting device for controlling water inrush in underground engineering according to claim 1, wherein The first end of the outer sleeve forms a second slurry inlet. The first end of the outer sleeve is in sealing fit with the operation pipe section of the inner pipe, and there is a discharge gap between the inner wall of the second end of the outer sleeve and the outer peripheral wall of the inner pipe.

3. The grouting device for controlling water inrush in underground engineering according to claim 1, characterized in that, A transmission component is provided on the rotating shaft. The driving mechanism is movably installed at the first end of the inner pipe through a guiding mechanism so as to be able to move to a transmission cooperation position and a transmission separation position. When the driving mechanism moves to the transmission cooperation position, it is in transmission connection with the transmission component to drive the transmission component to rotate around the axis of the rotating shaft, and when the driving mechanism moves to the transmission separation position, it is separated from the transmission component.

4. The grouting device for controlling water inrush in underground engineering according to claim 3, characterized in that, The guiding mechanism includes a first slide rail, a first slider, a second slide rail, and a second slider. The length direction of the first slide rail is parallel to the axis of the inner pipe. The first slider is slidably installed on the first slide rail along the length direction of the first slide rail. The second slide rail is provided on the first slider, and the length direction of the second slide rail is perpendicular to the axis of the inner pipe. The second slider is slidably installed on the second slide rail along the length direction of the second slide rail. The driving mechanism includes a driving motor provided on the second slider and a first gear connected to the output shaft of the driving motor. The axis of the output shaft of the driving motor is parallel to the axis of the inner pipe. The transmission component is a second gear. When in the transmission cooperation position, the first gear meshes with the second gear.

5. The grouting device for controlling water inrush in underground engineering according to claim 4, characterized in that, The grouting device for controlling water inrush in underground engineering includes a first limiting circular plate and a second limiting circular plate respectively connected to the two axial ends of the second gear. When the first gear meshes with the second gear, the first gear is axially limited between the first limiting circular plate and the second limiting circular plate.

6. The grouting device for controlling water inrush in underground engineering according to claim 5, wherein, The second mating post forms an axial channel that penetrates bidirectionally along its axis. The drill bit has a conical head, with the tip of the conical head facing away from the second mating post. The circular bottom surface of the conical head is connected to the second mating post through a connecting pipe. The conical head is formed with an inner cavity channel arranged along its axis and a plurality of injection hole channels arranged around the axis of the conical head. The first end of the inner cavity channel penetrates out of the circular bottom surface, and the second end of the inner cavity channel terminates inside the conical head and is adjacent to the tip of the conical head. The first end of the injection hole channel communicates with the second end of the inner cavity channel, and the second end of the injection hole channel penetrates out of the circular bottom surface and is spaced on the outer peripheral side of the connecting pipe. The injection hole channel extends along an inclined line at an angle along the axis of the conical head. The axial channel of the second mating post is communicated with the inner cavity channel through the connecting pipe. The projection of the circular bottom surface along the axial direction of the outer sleeve covers the outer sleeve. The outer diameter of the connecting pipe is smaller than the diameter of the circular bottom surface and the outer diameter of the second mating post.

7. The grouting device for controlling water inrush in underground engineering according to claim 6, wherein, A sealing ring is installed on the circular bottom surface of the conical head. When the second mating post moves towards the first end of the inner pipe until the circular bottom surface of the conical head contacts the end face of the second end of the inner pipe, the sealing ring seals around the outer peripheral wall of the inner pipe, and the sealing ring surrounds the second ends of the injection hole channels at intervals.

8. The grouting device for controlling water inrush in underground engineering according to claim 7, characterized in that, A plurality of radial channels extending along the radial direction are formed on the second mating post. The first end of the radial channel communicates with the axial channel, and the second end of the radial channel penetrates out of the outer periphery of the second mating post to form a second slurry outlet. The number and positions of the radial channels correspond to those of the first slurry outlet, so that the second mating post can rotate to a first position where it blocks some of the first slurry outlets and rotate to a second position where each of the first slurry outlets is aligned with a corresponding second slurry outlet.

9. A method for controlling water inrush in underground engineering, characterized in that, The method for treating water inrush in underground engineering uses the underground engineering water inrush treatment grouting device according to claim 8 for drilling and grouting plugging operations.

10. The underground engineering water inrush treatment method according to claim 9, characterized in that, The method for treating water inrush in underground engineering includes the steps: S1. Take the underground engineering water inrush treatment grouting device, adjust the position of the first slider on the first slide rail and the position of the second slider on the second slide rail, so that after the first gear meshes with the second gear, the first slider is locked to the first slide rail and the second slider is locked to the second slide rail. Start the drive motor to start the drill bit of the underground engineering water inrush treatment grouting device, and make the drill bit of the underground engineering water inrush treatment grouting device drill and detect the cavity range on the inclined shaft water outlet level, and measure the water inflow in the cavity area. S2. Use filling materials to fill and treat the water inrush in the cavity area. S3. Start the drill bit of the underground engineering water inrush treatment grouting device to drill holes row by row from top to bottom on the inclined shaft water outlet level. S4. Install a grouting pipe in the holes drilled in step S3, and use the multiple underground engineering water inrush treatment grouting devices to pass through each row-by-row repetitive grouting one by one to grout and block water in the roof caving area. Among them, grouting and water blocking are carried out by inputting slurries through the first slurry inlet and the second slurry inlet, so that the slurries flow out from multiple first slurry outlets and the discharging gap between the inner wall of the second end of the outer sleeve and the outer peripheral wall of the inner pipe flows into the grouting area. When grouting for the roof caving area, the circular bottom surface of the conical head is not in contact with the end surface of the second end of the inner pipe, so that a part of the slurry can also be ejected obliquely and reversely from the second ends of the respective injection holes, and the second matching column is rotated to the second position where each first slurry outlet is aligned with each corresponding second slurry outlet, so that a part of the slurry can be ejected radially from each first slurry outlet through the axial channel and the radial channel of the second matching column. When grouting for non-roof caving areas, the circular bottom surface of the conical head is in contact with the end surface of the second end of the inner pipe, so that the second end of the inner pipe is blocked.

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