Underwater spring opening plugging device and method and application

Abstract

The invention relates to an underwater spring opening plugging device and method and application, and belongs to the technical field of water conservancy projects. The device comprises a supporting assembly, a control assembly, a power assembly, a force transmission assembly, a guide disc, a shaping drill bit or a prefabricated plugging body detachably installed on the guide disc, and a fixing anchor rod. The prefabricated plugging body comprises a conical plugging body, a water guide pipe, a spiral and annular expansion water stop rubber strip, an arc-shaped switch and the like. The method comprises the following steps: drilling and shaping an underwater spring opening by using a shaping drill bit; the prefabricated plugging body is rotationally pressed into the hole channel, so that the expansion water stop rubber strip is sealed when meeting water; anchoring through a fixing anchor rod; and finally closing the arc-shaped switch to cut off water flow. Underwater direct and rapid construction without depending on the cofferdam is achieved, and the method has the advantages of being stable in structure, reliable in water stopping, high in adaptability, high in construction efficiency and low in cost and is particularly suitable for spring hole plugging in complex environments such as a reservoir inundation area.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of hydraulic engineering, and particularly relates to an underwater spring hole plugging device, method and application. BACKGROUND

[0002] Springs often distribute in the form of spring hole groups around reservoir areas or river channels. In actual construction of hydraulic engineering, part of the dispersed spring holes with small flow are often guided by plugging. However, due to the large internal water pressure of the spring hole, irregular hole shape, and part of the spring hole being below the water storage level of the reservoir, the traditional cofferdam drainage plugging method not only has long construction period and high cost, but also has great construction difficulty and poor effect under the underwater operation condition.

[0003] At present, there is still lack of a systematic and operable technical scheme for efficient plugging of the underwater spring hole in the field of hydraulic engineering, which directly affects the construction progress and long-term operation safety of the related engineering. Therefore, it is urgent to develop a spring hole plugging device suitable for underwater environment, stable structure and convenient construction. SUMMARY

[0004] The application aims to provide an underwater spring hole plugging device, method and application to overcome the above technical defects.

[0005] To solve the above technical problems, the application provides an underwater spring hole plugging device, which comprises: a support assembly for providing a work platform; a power assembly installed on the support assembly; a control assembly in signal connection with the power assembly for controlling start-stop and power output of the power assembly; a force transmission assembly connected to the power assembly and transmitting power; a guide disc arranged at the end of the force transmission assembly, wherein the guide disc is provided with a detachable mounting interface, and the detachable mounting interface can selectively mount a profiled drill bit or a prefabricated plugging body, wherein the profiled drill bit is used for modifying the shape of the spring hole, and the prefabricated plugging body is used for embedding and plugging the spring hole; a fixed anchor rod for fixing the prefabricated plugging body around the spring hole.

[0006] According to an underwater spring hole plugging device, the profiled drill bit comprises: a drill body in T-shaped cross section; a ring-shaped spike arranged in a ring shape around the drill body and towards the spring hole, for forming a ring-shaped groove outside the hole opening of the spring hole; a cutting edge uniformly arranged on the outer wall of the drill body; a drill bit mounting hole for connecting with the guide disc.

[0007] According to an underwater spring sealing device, the prefabricated sealing body comprises: a conical sealing body, which is a T-shaped reinforced concrete structure, and is composed of a circular plate and a main body; a water guide pipe, which is embedded in the conical sealing body; a spiral expansion waterproof glue strip, which is wound on the columnar part of the conical sealing body; a ring-shaped expansion waterproof glue strip, which is arranged on the circular plate part of the conical sealing body and faces the spring;

[0008] According to an underwater spring sealing device, the prefabricated sealing body further comprises: anchor rod reserved holes, which are uniformly arranged on the circular plate part of the conical sealing body, and penetrate through the conical sealing body, and are used for penetrating the fixed anchor rod and anchoring the prefabricated sealing body in the peripheral rock mass of the spring; a sealing body mounting hole, which is used for connecting with the guide disc;

[0009] According to an underwater spring sealing device, the prefabricated sealing body further comprises: an arc-shaped switch reserved hole, which is arranged on the circular plate part of the conical sealing body; an arc-shaped switch, which is arranged in the arc-shaped switch reserved hole and is used for closing the outlet of the water guide pipe.

[0010] According to an underwater spring sealing device, the prefabricated sealing body further comprises: an expansion rivet, which is used for fixing the arc-shaped switch; a ring-shaped rubber sheet, which is arranged between the arc-shaped switch and the conical sealing body and is used for sealing the assembly gap between the arc-shaped switch and the conical sealing body.

[0011] According to an underwater spring sealing device, the support assembly is a ship or a vehicle, which is used for providing a working platform near the spring; the power assembly is an engine; the force transmission assembly is a three-link structure, and the inflection point thereof is connected in a hinged manner.

[0012] According to an underwater spring sealing device, the control assembly is a computer control system, which is used for sending control instructions to the power assembly and the force transmission assembly, so as to adjust the rotation speed, drilling angle and pressure applied to the spring of the profiled drill bit.

[0013] The application further provides an underwater spring sealing method, which uses the underwater spring sealing device and comprises the following steps: determining the position and size of the spring, and selecting the profiled drill bit and the prefabricated sealing body matched with the spring; arranging the support assembly near the spring eye, and mounting the profiled drill bit on the guide disc; operating the profiled drill bit to perform rotary drilling on the spring eye to correct the shape thereof; removing the profiled drill bit and cleaning the drilling debris; mounting the prefabricated plugging body to the guide disc, and rotating the prefabricated plugging body to push it into the spring eye, so that the spiral inflatable waterproof rubber strip and the annular inflatable waterproof rubber strip are inflated by water and tightly fit the inner wall of the spring eye; mounting the fixed anchor rod and fixing the prefabricated plugging body; operating the arc-shaped switch to close the water conduit to cut off the water flow and complete the plugging.

[0014] The application also provides an application of the underwater spring eye plugging device.

[0015] The application has the following advantages: (1) The prefabricated plugging body and the special profiled drill bit are used in cooperation, and the integrated power assembly and the force transmission assembly are used, so that the profiled drilling and plugging of the spring eye can be directly completed underwater without building a cofferdam and without complex water diversion operation. The process omits a large number of procedures such as building, maintaining, demolishing and subsequent water diversion and backfilling in the traditional cofferdam method, greatly shortens the construction period, reduces the construction cost and resource consumption, and is especially suitable for environments such as reservoir areas and deep water where dry land operation is difficult to implement.

[0016] (2) The prefabricated plugging body adopts a conical structure design, which is highly matched with the shape of the spring hole after being modified by the profiled drill bit. The double water-inflatable sealing system composed of the spiral inflatable waterproof rubber strip and the annular inflatable waterproof rubber strip can tightly fit the hole wall and form the first reliable waterproof seal. Then, the permanent anchoring force is provided by the fixed anchor rod, and the water flow is finally cut off by the arc-shaped switch, supplemented by the annular rubber sheet sealing, to form a multiple protection mechanism of "mechanical embedding, expansion sealing and final cutting", which ensures the long-term structural stability and excellent waterproof effect of the prefabricated plugging body.

[0017] (3) The entire device integrates support, control, power, force transmission and execution components, and can flexibly select a ship body or a vehicle as a support platform according to the site conditions. The profiled drill bit and the prefabricated plugging body adopt a detachable modular design and are quickly replaced through a unified guide disc interface, so that the device is convenient for transportation, assembly and operation. The design can adapt to the plugging requirements of spring eyes in different positions (shore, water surface), different water depths and different hole diameters.

[0018] (4) The large-scale cofferdam and drainage operation is avoided, the slope excavation, water disturbance and damage to the surrounding ecological environment are reduced, and the operation mode of underwater direct plugging also reduces the risk of changing the hydrogeological conditions of the construction area. The device operation mainly relies on mechanical power, reduces the length and intensity of the high-risk operation of divers, and effectively improves the overall construction safety.

[0019] In order to make the above content of the application more obvious and easy to understand, the following preferred embodiments are described in detail below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of the underwater spring sealing device (with a prefabricated sealing body).

[0021] Figure 2 is a schematic view of the underwater spring sealing device (with a modified drill bit).

[0022] Figure 3 is a sectional view of the prefabricated sealing body.

[0023] Figure 4 is a front view of the prefabricated sealing body.

[0024] Figure 5 is a sectional view of the modified drill bit.

[0025] BRIEF DESCRIPTION OF DRAWINGS: 1, support assembly; 2, control assembly; 3, power assembly; 4, force transmission assembly; 5, guide disc; 6, modified drill bit; 6-1, drill body; 6-2, annular conical spike; 6-3, cutting edge; 6-4, drill bit mounting hole; 7, prefabricated sealing body; 7-1, conical sealing body; 7-2, water guide pipe; 7-3, anchor rod reserved hole; 7-4, spiral expansion water stop glue strip; 7-5, annular expansion water stop glue strip; 7-6, sealing body mounting hole; 7-7, arc-shaped switch reserved hole; 7-8, arc-shaped switch; 7-9, expansion rivet; 7-10, annular rubber sheet; 8, fixed anchor rod; 9, spring. DETAILED DESCRIPTION

[0026] The embodiments of the application are described below by specific specific embodiments, and those skilled in the art can easily understand other advantages and effects of the application from the content disclosed in the specification.

[0027] It should be noted that in the present application, the upper, lower, left and right in the figure are considered as the upper, lower, left and right of the underwater spring sealing device described in the specification.

[0028] Reference will now be made to the drawings to describe the exemplary embodiments of the present application in detail. The present application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the application to those skilled in the art. The terminology used in the description presented herein is not intended to be interpreted in any specific and / or meticulous fashion unless otherwise stated. In the drawings, like numerals refer to like elements throughout.

[0029] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0030] The following devices and methods are mainly aimed at the sealing needs of underwater springs. A spring 9 generally refers to a naturally formed spring outlet, which can exist individually or in the form of a spring group. In water conservancy engineering, it is common for springs originally located on land to be submerged by reservoir water due to reservoir impoundment, thereby forming a pressure-bearing underwater spring below the water level of the reservoir. Such springs usually have high internal water pressure, and due to the limitations of water depth, line of sight, and working environment, the implementation of traditional cofferdam drainage sealing methods is difficult, costly, and time-consuming. The technical solutions provided by the present application are specifically used to achieve rapid and reliable sealing of springs 9 in such complex underwater environments. In addition, the device is also suitable for sealing operations on non-submerged water springs, and has good working condition adaptability.

[0031] The present embodiment relates to a device for sealing an underwater spring (hereinafter referred to as the device), please refer to Figure 1 and Figure 2 , comprising a support assembly 1, a control assembly 2, a power assembly 3, a force transmission assembly 4, a guide disc 5, a profiled drill bit 6, a prefabricated sealing body 7, and a fixed anchor rod 8.

[0032] The support assembly 1 serves as the basic load-bearing platform of the entire device, and can provide a stable working position on the water surface or on land, ensuring that other assemblies maintain a stable working state in complex underwater environments. When the spring 9 is located far away, a ship is used as the support assembly 1; when the nearby road is convenient, a small truck is used as the support assembly 1.

[0033] It should be noted that the support assembly 1 includes but is not limited to a ship, a vehicle, or a floating platform.

[0034] The power assembly 3 is installed on the support assembly 1, provides mechanical power required for the whole device to work, and is the power source for realizing drilling, installation and other actions.

[0035] In some embodiments, the power assembly 3 is an engine, such as a diesel engine.

[0036] The control assembly 2 is in signal connection with the power assembly 3, used for controlling the start and stop of the power assembly 3 and the power output, and also controlling the angle and force of the force transmission assembly 4.

[0037] In some embodiments, the control assembly 2 is a computer control system, used for sending control instructions to the power assembly 3 and the force transmission assembly 4, so as to adjust the rotation speed of the profiled drill bit 6, the drilling angle and the pressure applied to the spring 9.

[0038] Specifically, the computer control system can be an industrial control computer (IPC), a programmable logic controller (PLC), a single-chip microcomputer (MCU) or an embedded processor, etc.

[0039] The force transmission assembly 4 is connected to the power assembly 3 and transmits power, transmits the power output by the power assembly 3 to the guide disc 5 and the working tool (profiled drill bit 6 or prefabricated sealing body 7) installed thereon, ensures efficient power transmission and controllable direction, and thus completes the profiled or sealing work on the spring 9.

[0040] In some embodiments, the force transmission assembly 4 is a three-link structure made of cast iron, and the inflection points thereof are connected by hinged connection. Specifically, it includes a first link, a middle link and a last link, and each link is connected by hinged connection (preferably spherical hinge or universal joint), and the output end of the first link and the power assembly 3 and the last link and the guide disc 5 are also connected by hinged connection, thereby forming a mechanical arm system which can flexibly adjust the posture and position within a certain space. The three-link mechanism is not used to directly transmit rotary torque, but to control the spatial position and posture (including pitch, deflection angle and three-dimensional coordinates) of the guide disc 5, so as to accurately send the profiled drill bit 6 or the prefabricated sealing body 7 to the working position of the underwater spring 9.

[0041] In order to realize the rotary cutting motion required by the profiled drill bit 6, the inside of the guide disc 5 in the embodiment is integrated with an independent rotary drive unit (not separately marked in the figure). The rotary drive unit is preferably a waterproof hydraulic motor or a submersible motor, and the power thereof is obtained from the power assembly 3 (such as an engine) located on the support assembly 1 through pipelines or cables.

[0042] The guide disc 5 is arranged at the end of the force transmission assembly 4, and is provided with a detachable mounting interface for selectively mounting the profiled drill bit 6 or the prefabricated plugging body 7. The profiled drill bit 6 is used to shape the spring 9 to meet the installation requirements of the prefabricated plugging body 7, and the prefabricated plugging body 7 is used to embed and plug the shaped spring 9, thereby physically cutting off the water flow.

[0043] The guide disc 5 is a key interface component connecting the force transmission assembly 4 and the working tool. In some embodiments, as shown in Figure 1 or Figure 2 The main body of the guide disc 5 is composed of a circular cast iron plate and three iron columns. The plate body of the circular cast iron plate is provided with a mounting hole with an internal thread for connecting a corresponding threaded interface on the profiled drill bit 6 or the prefabricated plugging body 7. The three iron columns are used as connecting rods, and the two ends of each iron column are provided with external threads. During assembly, the threads at the two ends of the iron columns are screwed into the threaded holes in the corresponding positions of the circular cast iron plate and the profiled drill bit 6 or the prefabricated plugging body 7, respectively, to achieve detachable mechanical connection between the circular cast iron plate and the three iron columns, thereby forming a guide disc structure that is rigid and reliable, easy to install and replace.

[0044] The fixed anchor rod 8 is used to anchor the prefabricated plugging body 7 in the rock-soil body around the spring 9 after installation, to provide long-term stable structural fixation force and prevent the prefabricated plugging body 7 from being displaced due to water pressure or external force.

[0045] In some embodiments, the fixed anchor rod 8 is a spiral steel anchor rod, which is arranged uniformly along the outer ring of the conical plugging body 7-1 after the prefabricated plugging body 7 is installed, and penetrates into the rock-soil body around the spring 9 through the corresponding anchor rod reserved hole 7-3 on the prefabricated plugging body 7. The anchoring depth of the anchor rod is designed to be not less than 0.5 meters to ensure that it has sufficient gripping force and uplift bearing capacity in the rock-soil body.

[0046] The above-mentioned components work together to form a complete underwater spring plugging system: the support assembly 1 provides a stable foundation, the power assembly 3 provides a power source, the control assembly 2 realizes precise control, the force transmission assembly 4 transmits power to the guide disc 5, the guide disc 5 completes the shaping and plugging of the spring 9 through the replaceable profiled drill bit 6 or the prefabricated plugging body 7, and finally the fixed anchor rod 8 ensures the long-term stability of the prefabricated plugging body 7. The device realizes efficient and reliable plugging of the underwater spring, and is especially suitable for deep water or complex hydrological environment where cofferdam construction is difficult.

[0047] Please refer to Figure 5 The profiled drill bit 6 includes a drill body 6-1, an annular conical spike 6-2, a cutting edge 6-3, and a drill bit mounting hole 6-4.

[0048] The drill body 6-1 is a bearing structure of the profiled drill bit 6, and the T-shaped cross-section design can ensure that the profiled drill bit 6 has sufficient bending stiffness and stability when axially advancing, and at the same time matches the shape of the subsequently installed prefabricated plugging body 7, thereby providing a shape basis for plugging operation.

[0049] The annular cone 6-2 is arranged annularly at the front end of the drill body 6-1 and faces the spring 9, and is used for pre-cutting a ring-shaped shallow groove on the hole opening peripheral rock mass of the spring 9, which provides a containing space for the annular expansion water stop rubber strip 7-5 on the prefabricated plugging body 7, thereby enhancing the water stop sealing effect.

[0050] In some embodiments, as shown in Figure 5 The drill body 6-1 includes a right circular plate and a left column body, and the end of the left column body is conical and made of hard alloy high-speed steel. The annular cone 6-2 is arranged on the plate surface of the right circular plate and faces the spring 9, and each cone is an isosceles triangle and made of hard alloy high-speed steel.

[0051] The cutting edge 6-3 is uniformly arranged on the outer circumferential surface of the column body of the drill body 6-1, and is used for trimming and expanding the hole wall of the spring 9 during the rotary drilling of the profiled drill bit 6, so that the inner diameter and shape of the hole wall meet the installation requirements of the prefabricated plugging body 7, thereby realizing hole shaping.

[0052] The annular cone 6-2, the cutting edge 6-3 and the drill body 6-1 are integrally made.

[0053] The drill bit mounting hole 6-4 is provided at the rear end of the drill body 6-1, i.e. on the right circular plate, and the inner wall thereof is provided with threads for detachable connection with the corresponding interfaces (such as three iron columns) on the guide disc 5, thereby realizing quick installation and dismounting of the profiled drill bit 6 on the guide disc 5, and facilitating process conversion and tool replacement.

[0054] Please refer to Figure 3 and Figure 4 The prefabricated plugging body 7 includes a conical plugging body 7-1, a water guide pipe 7-2, an anchor rod reserved hole 7-3, a spiral expansion water stop rubber strip 7-4, an annular expansion water stop rubber strip 7-5, a plugging body mounting hole 7-6, an arc-shaped switch reserved hole 7-7, an arc-shaped switch 7-8, an expansion rivet 7-9 and an annular rubber sheet 7-10.

[0055] The conical plugging body 7-1 is a force-bearing and shaping member of the plugging structure, and the T-shaped cross-section thereof is composed of a circular plate and a column body and is made of reinforced concrete with a strength not less than C30, thereby being able to provide sufficient structural strength and durability and ensuring long-term stability under the action of water pressure and external force.

[0056] Specifically, the shape of the conical plugging body 7-1 is similar to that of the drill body 6-1, and the right circular plate has the same size, and the left column body has a slightly smaller size.

[0057] The water guide pipe 7-2 is embedded in the interior of the conical plugging body 7-1 and penetrates the structure, which plays a role in balancing the water pressure inside and outside the spring eye 9 during installation, reduces the installation resistance, and can be used as a subsequent grouting or detection channel.

[0058] In some embodiments, the water guide pipe 7-2 is made of carbon steel pipe with a strength not less than Q235, which is fixed in place before pouring the concrete of the conical plugging body 7-1 and is poured as a whole.

[0059] The anchor rod reserved holes 7-3 are arranged uniformly around the circular plate part of the conical plugging body 7-1, and the holes penetrate the conical plugging body 7-1 to provide a channel for fixing the anchor rod 8. By penetrating and anchoring in the peripheral rock mass of the spring eye 9, the fixed anchor rod 8 can exert a continuous anchoring tension on the prefabricated plugging body 7, ensuring its position stability under long-term water pressure and external force, preventing displacement or loosening.

[0060] When the prefabricated conical plugging body 7-1 is formed, in order to form the anchor rod reserved holes 7-3, the pre-embedded forming process is adopted: before pouring the concrete, PVC pipe is used as a pre-embedded pipe mold, which is fixed in the mold according to the designed position (uniformly arranged around) and angle, so as to penetrate the circular plate part to be poured. Then the concrete is poured, and after the concrete hardens to the designed strength, the PVC pipe is wrapped in the concrete structure, forming a reserved hole that is smooth in inner wall, accurate in size, and penetrates the conical plugging body 7-1. This process ensures the position accuracy and penetrability of the anchor rod reserved holes 7-3, and provides reliable guidance for the smooth penetration of the fixed anchor rod 8 during subsequent underwater installation.

[0061] The spiral expansion waterproof glue strip 7-4 is spirally wound and fixed on the outer surface of the column of the conical plugging body 7-1, which can rapidly expand after encountering water, filling the gap between the conical plugging body 7-1 and the hole wall of the spring eye 9, and forming the first continuous and reliable ring-shaped waterproof seal.

[0062] In some embodiments, the spiral expansion waterproof glue strip 7-4 is pasted on the outer surface of the column of the conical plugging body 7-1 using environmentally friendly 3M double-sided tape, and is wrapped with plastic film on the outside. It is ensured that it is isolated from water before installation, and the plastic film is broken by friction during installation, and finally expands, so that the conical plugging body 7-1 is tightly combined with the rock wall, forming the first waterproof structure.

[0063] The annular expansion waterproof glue strip 7-5 is arranged on the front end surface of the circular plate part of the conical plugging body 7-1 and faces the spring eye 9. After the prefabricated plugging body 7 is installed in place, it expands and embeds in the annular groove formed by the profiled drill bit 6, forming the second annular seal, further enhancing the overall waterproof effect and anti-permeability.

[0064] In some embodiments, the annular expansion sealing rubber strip 7-5 is installed on the left plate surface of the right circular plate of the conical plugging body 7-1, and is in a position corresponding to the position of the annular conical spike 6-2. The annular expansion sealing rubber strip 7-5 is pasted on the right circular plate of the conical plugging body 7-1 by using environmentally friendly 3M double-sided adhesive tape, and is wrapped with a plastic film on the outside. The annular expansion sealing rubber strip 7-5 is guaranteed to be isolated from water before installation, the plastic film is broken by friction during installation, and finally expands to form the second water sealing structure.

[0065] The plugging body mounting hole 7-6 is arranged on the circular plate portion of the conical plugging body 7-1, and a thread is arranged on the inner wall of the plugging body mounting hole 7-6. The plugging body mounting hole 7-6 is detachably connected to a threaded interface on the guide disc 5. The interface enables the prefabricated plugging body 7 to be stably clamped and accurately guided to the position of the spring eye 9 by the guide disc 5, and facilitates the quick separation between the guide disc 5 and the plugging body after installation.

[0066] In some embodiments, the plugging body mounting hole 7-6 is made of a carbon steel pipe as a pre-embedded part, and the material strength of the carbon steel pipe is not less than Q235 grade. During the pouring process of the prefabricated conical plugging body 7-1, the carbon steel pipe is fixed in the formwork at a designed position, so that one end face of the carbon steel pipe is flush with or slightly embedded in the outer surface of the circular plate portion of the conical plugging body 7-1, and the other end extends into the concrete. Then, the carbon steel pipe is poured together with the concrete, and after hardening, the carbon steel pipe forms a permanent and high-strength structural whole with the conical plugging body 7-1. The inner wall of the carbon steel pipe is processed with a thread to form a firm and reliable threaded interface, which is used to connect a threaded component (such as an iron column) on the guide disc 5, so as to bear and transmit the pushing and pulling force and torque from the guide disc 5 during installation.

[0067] The arc-shaped switch reserved hole 7-7 is arranged on the outside of the circular plate portion of the conical plugging body 7-1, and an arc-shaped slide is arranged in the arc-shaped switch reserved hole 7-7 and is in communication with the outlet of the water guide pipe 7-2. The structure provides installation and movement space for the arc-shaped switch 7-8, and ensures that the movement track of the arc-shaped switch 7-8 is accurately aligned with the outlet of the water guide pipe 7-2.

[0068] In some embodiments, the arc-shaped switch reserved hole 7-7 includes an internal arc-shaped deep groove and a rectangular mounting port. The internal arc-shaped deep groove provides a guide track for the sliding of the arc-shaped switch 7-8. The deep groove channel is bent and welded from a carbon steel plate to form a firm slide skeleton, and the material strength of the deep groove channel is not less than Q235 grade, so as to ensure that the deep groove channel can bear mechanical stress under the action of the sliding of the arc-shaped switch 7-8 and water pressure. The rectangular mounting port is arranged on the outer surface of the circular plate of the conical plugging body 7-1 and is in communication with one end of the internal arc-shaped deep groove, and the rectangular mounting port serves as a passage for the arc-shaped switch 7-8 to be installed, taken out and manually operated.

[0069] The arc-shaped switch 7-8 is slidably arranged in the arc-shaped slide of the arc-shaped switch reserved hole 7-7. The arc-shaped switch 7-8 can be pushed by the operator after installation to move along the arc-shaped slide to the position of completely covering and closing the outlet of the water guide pipe 7-2, so as to achieve the final cutting-off of the spring water and complete the key step of the plugging process.

[0070] In some embodiments, the arc-shaped switch 7-8 is a T-shaped rigid component composed of a rectangular plate and an arc-shaped plate welded together, and is made of carbon steel with a material strength not less than Q235 grade, so as to ensure sufficient mechanical strength to withstand water pressure and achieve reliable cutting-off. In order to facilitate assembly and ensure smooth sliding of the arc-shaped switch 7-8 in the internal arc-shaped deep groove of the arc-shaped switch reserved hole 7-7, the overall size of the arc-shaped switch 7-8 is 3mm to 5mm smaller than the design size of the internal arc-shaped deep groove of the arc-shaped switch reserved hole 7-7, so as to reserve necessary installation and movement gap. The size design ensures the compression space of the annular rubber sheet 7-10 and the operation flexibility, avoids jamming caused by processing or installation errors, and ensures that the arc-shaped switch 7-8 can be smoothly assembled and slid along the predetermined track to the position of completely closing the outlet of the water guide pipe 7-2.

[0071] The expansion rivet 7-9 is arranged along the periphery of the rectangular plate of the arc-shaped switch 7-8, and is mechanically locked in the radial expansion of the expansion body in the corresponding hole position of the conical plugging body 7-1, so as to reliably lock the arc-shaped switch 7-8 in the closed position and prevent displacement caused by water flow impact or vibration, thereby ensuring the permanence of the plugging state.

[0072] In some embodiments, the expansion rivet 7-9 is made of carbon steel with a strength not less than Q235.

[0073] The annular rubber sheet 7-10 is arranged between the rectangular plate of the arc-shaped switch 7-8 and the outer surface of the circular plate of the conical plugging body 7-1. When the arc-shaped switch 7-8 is pushed to the closed position and fixed by the expansion rivet 7-9, the annular rubber sheet 7-10 is compressed and elastically deformed to fill all assembly gaps and micro irregularities between the arc-shaped switch 7-8 and the conical plugging body 7-1, forming a resilient and durable static seal to completely block water leakage through the gaps.

[0074] In some embodiments, the annular rubber sheet 7-10 is made of neoprene with good environmental friendliness and water resistance.

[0075] The embodiment also provides an underwater spring eye plugging method using the underwater spring eye plugging device, including the following steps: Step one, site survey and prefabricated body manufacturing.

[0076] The location of the spring eye 9 is determined, its size is measured, including the aperture and morphology, and similar-sized spring eyes are classified for batch processing. Based on the measurement and classification results, a matching modified drill bit 6 and prefabricated closure body 7 are determined and prefabricated.

[0077] The prefabricated closure body 7 is prepared by sequentially installing the water guide pipe 7-2, arranging the pre-buried pipe forming the anchor rod pre-bore 7-3, installing the pre-buried steel pipe of the closure body mounting hole 7-6, arranging the pre-buried slide skeleton forming the arc-shaped switch pre-bore 7-7, and then pouring the concrete structure of the conical closure body 7-1, and installing the spiral expansion waterproof adhesive tape 7-4 and the annular expansion waterproof adhesive tape 7-5 on its surface. After the concrete reaches the design strength, the prefabricated closure body 7 is completed.

[0078] Step two, equipment deployment and deployment.

[0079] The support assembly 1, control assembly 2, power assembly 3, force transmission assembly 4, and guide disc 5 are assembled on land or a ship, vehicle, etc. to form an integrated working device. The integrated working device is moved and stably arranged at a working position near the spring eye 9.

[0080] Step three, drill bit installation and spring eye modification.

[0081] The selected modified drill bit 6 is installed and fixed on the guide disc 5 through its drill bit mounting hole 6-4. The power assembly 3 is started through the control assembly 2 to drive the guide disc 5 to rotate and advance the modified drill bit 6, cutting and modifying the hole of the spring eye 9. The modified drill bit 6 uses the cutting edge 6-3 to modify the hole wall, and simultaneously cuts an annular groove on the surrounding rock mass outside the hole of the spring eye 9 using the annular conical spike 6-2.

[0082] Step four, hole cleaning and drill bit disassembly.

[0083] After the modification is completed, the modified drill bit 6 is retrieved to clean the drill slurry and debris in the hole of the spring eye 9, ensuring the cleanliness of the hole wall, and then the modified drill bit 6 is disassembled from the guide disc 5.

[0084] Step five, closure body installation.

[0085] The prefabricated closure body 7 is installed on the guide disc 5 through its closure body mounting hole 7-6, and the prefabricated closure body 7 is aligned and rotated and pushed into the modified hole of the spring eye 9 through the guide disc 5. In this process, the protective film (i.e., plastic film) of the spiral expansion waterproof adhesive tape 7-4 and the annular expansion waterproof adhesive tape 7-5 on the prefabricated closure body 7 is broken by friction and rapidly expands after coming into contact with water, tightly adhering to the inner wall of the hole and the annular groove outside the hole, respectively, forming multiple waterproof seals.

[0086] Finally, the diver operates to disconnect the connection between the guide disc 5 and the prefabricated closure body 7.

[0087] Step six, anchoring the closure body.

[0088] By the anchor rod reserved hole 7-3 reserved on the prefabricated closure body 7, the fixed anchor rod 8 is driven into the rock-soil body around the spring eye 9 by the diver to the designed depth (not less than 0.5m), the circumferential anchoring tension is applied to the prefabricated closure body 7, and the long-term position stability is ensured.

[0089] Step seven, water flow interruption and final sealing.

[0090] By the diver at the arc-shaped switch reserved hole 7-7 of the prefabricated closure body 7, the annular rubber sheet 7-10 and the arc-shaped switch 7-8 are installed in sequence. The arc-shaped switch 7-8 is pushed to move along the embedded slide until the outlet of the water conduit 7-2 is completely closed. Then the arc-shaped switch 7-8 is locked in the closed position using the expansion rivet 7-9, during which the annular rubber sheet 7-10 is compressed, realizing reliable sealing of the assembly gap between the arc-shaped switch 7-8 and the conical closure body 7-1, finally interrupting the water flow, completing the permanent sealing of the underwater spring eye.

[0091] The embodiment also provides an application of the underwater spring eye sealing device, which is used for sealing the underwater spring eye in situ, realizing the underwater direct construction without relying on cofferdam water diversion operation, and concentrating the flow or permanently blocking the spring water seepage.

[0092] Specifically, the application process is as follows: The underwater spring eye sealing device is configured in the water area where the spring eye 9 to be treated is located, and a stable water or shore operation platform is provided by the support assembly 1. The power assembly 3 and the force transmission assembly 4 are operated by the control assembly 2 to drive the guide disc 5 and the modified drill bit 6 installed thereon to drill and shape the underwater spring eye 9 in situ. After drilling, the prefabricated closure body 7 is installed to the guide disc 5, and the power assembly 3 and the force transmission assembly 4 are operated again to embed and press the prefabricated closure body 7 into the shaped spring eye 9. During embedding, the spiral expansion waterstop rubber strip 7-4 and the annular expansion waterstop rubber strip 7-5 provided on the prefabricated closure body 7 expand when encountering water, realizing tight sealing with the inner wall of the hole. Then, the permanent anchoring of the prefabricated closure body 7 is completed by the fixed anchor rod 8, and the arc-shaped switch 7-8 is operated to finally interrupt the water flow of the water conduit 7-2.

[0093] The above application is completed directly underwater throughout, without the need for building cofferdams and conducting large-scale water diversion operations, thereby reducing the influence of construction on the surrounding water environment, shortening the construction period, and reducing the engineering cost. The application can realize rapid and reliable sealing of scattered and small-flow underwater spring eyes, and is suitable for auxiliary spring eye sealing for concentrating the flow of main spring eyes in water conservancy projects, or for permanently blocking unfavorable seepage channels at the bottom of reservoirs and lakes.

[0094] The underwater spring hole plugging device, method and application provided by the embodiment solve the underwater construction problem of the background technology in an efficient and low-cost manner through "land prefabrication and underwater assembly". Specifically, (1) the complex and expensive traditional procedures such as building cofferdams and large-scale drainage are completely abandoned, and all operations are directly completed underwater through integrated mechanical devices, thereby greatly shortening the construction period, reducing direct costs and ecological impact. (2) The four functions of "shaping, water stopping, anchoring and flow cutting" are integrated in a set of devices and prefabricated bodies. The special-shaped drill bit quickly shapes; the expansion rubber strip carried by the prefabricated plugging body automatically realizes multiple reliable sealing during installation; and the mechanical drive ensures installation accuracy and efficiency. This avoids the difficulties and uncertainties of underwater manual item-by-item construction. (3) The shaped drill bit and the prefabricated plugging body can be quickly replaced to adapt to different sizes of springs; and the device can be carried on a ship or a vehicle for flexible deployment. This design reduces equipment investment and transfer costs, and improves the utilization rate and engineering adaptability of a single set of device.

[0095] In summary, the device changes the "wet construction" of the traditional underwater engineering into "dry prefabrication and wet assembly", and fundamentally solves the long-term problem of low efficiency, high risk and high cost of underwater high-pressure spring hole plugging operation through technical integration and process simplification.

[0096] Those skilled in the art can understand that the above embodiments are specific examples for implementing the present application, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A device for sealing underwater springs, characterized in that, include: Supporting component (1) provides an operating platform; The power assembly (3) is mounted on the support assembly (1); The control component (2) is signal-connected to the power component (3) and is used to control the start-up, stop and power output of the power component (3); The force transmission component (4) is connected to the power component (3) and transmits power; A guide plate (5) is arranged at the end of the force transmission component (4). The guide plate (5) is provided with a detachable installation interface. The detachable installation interface can selectively install a shaping drill bit (6) or a prefabricated sealing body (7). The shaping drill bit (6) is used to correct the shape of the spring (9), and the prefabricated sealing body (7) is used to embed and seal the spring (9). Fixed anchor bolts (8) are used to fix the prefabricated sealing body (7) around the spring (9).

2. The underwater spring sealing device according to claim 1, characterized in that, The profiled drill bit (6) includes: The drill body (6-1) has a T-shaped cross-section; An annular cone (6-2) is arranged in a ring around the drill body (6-1) and facing the spring (9) to form an annular groove outside the opening of the spring (9); Cutting edges (6-3) are evenly distributed on the outer wall of the drill body (6-1); The drill bit mounting hole (6-4) is used to connect with the guide plate (5).

3. The underwater spring sealing device according to claim 2, characterized in that, The prefabricated sealing body (7) includes: The cone-shaped sealing body (7-1) is a reinforced concrete structure with a T-shaped cross-section, consisting of a circular plate and a main body; The water guide pipe (7-2) is pre-embedded in the conical sealing body (7-1); Spiral expansion sealing strip (7-4) is wrapped around the cylindrical part of the conical sealing body (7-1); An annular expansion sealing strip (7-5) is provided on the circular plate portion of the conical sealing body (7-1) and faces the spring (9).

4. The underwater spring sealing device according to claim 3, characterized in that, The prefabricated sealing body (7) also includes: Anchor bolt pre-drilled holes (7-3) are evenly arranged circumferentially on the circular plate portion of the conical sealing body (7-1). The anchor bolt pre-drilled holes (7-3) penetrate the conical sealing body (7-1) and are used for the fixed anchor bolts (8) to pass through and fix the prefabricated sealing body (7) to the surrounding rock mass of the spring (9) by anchoring. The sealing body mounting hole (7-6) is used to connect with the guide plate (5).

5. The underwater spring sealing device according to claim 4, characterized in that, The prefabricated sealing body (7) also includes: An arc-shaped switch pre-drilled hole (7-7) is provided in the circular plate portion of the conical sealing body (7-1); An arc-shaped switch (7-8) is installed inside the arc-shaped switch pre-drilled hole (7-7) and is used to seal the outlet of the water pipe (7-2).

6. The underwater spring sealing device according to claim 5, characterized in that, The prefabricated sealing body (7) also includes: Expansion rivets (7-9) are used to secure the arc switch (7-8). An annular rubber sheet (7-10) is disposed between the arc switch (7-8) and the conical sealing body (7-1) to seal the assembly gap between the arc switch (7-8) and the conical sealing body (7-1).

7. The underwater spring sealing device according to claim 1, characterized in that, The support assembly (1) is a boat or vehicle used to provide a working platform near the spring (9); The power component (3) is an engine; The force transmission component (4) is a three-bar structure, and its inflection point is connected by a hinge.

8. The underwater spring sealing device according to claim 1, characterized in that, The control component (2) is a computer control system used to send control commands to the power component (3) and the force transmission component (4) to adjust the rotation speed, drilling angle and pressure applied to the spring (9) of the shaping drill bit (6).

9. A method for sealing underwater springs, characterized in that, Using the underwater spring sealing device as described in claim 5 includes the following steps: Determine the location and size of the spring (9), and select the matching profile drill bit (6) and the prefabricated plug (7). The support assembly (1) is arranged near the spring (9), and the shaping drill bit (6) is installed on the guide plate (5). The shaping drill bit (6) is operated to rotate and drill the spring (9) to correct its shape; Remove the shaping drill bit (6) and clean the drill debris; Install the prefabricated sealing body (7) onto the guide plate (5), and rotate the prefabricated sealing body (7) into the spring (9) so that the spiral expansion sealing strip (7-4) and the annular expansion sealing strip (7-5) expand when exposed to water and fit tightly against the inner wall of the spring (9). Install the fixed anchor rod (8) and fix the prefabricated sealing body (7); Operate the arc switch (7-8) to close the water pipe (7-2) to cut off the water flow and complete the sealing.

10. The application of an underwater spring sealing device, characterized in that, The underwater spring sealing device as described in any one of claims 1 to 8 is used to seal underwater springs in situ. The underwater spring sealing device enables direct underwater construction without relying on cofferdam drainage operations, so as to concentrate the flow or permanently block the seepage of spring water.

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