Adjustable water retaining device of tunnel rock drilling rack and using method of adjustable water retaining device

Abstract

The invention discloses an adjustable water retaining device for a tunnel rock drilling rack and a using method thereof.The adjustable water retaining device comprises a base, a connecting rod and a water retaining umbrella cover, the water retaining umbrella cover is supported through one end of the connecting rod, the other end of the connecting rod is installed on the base through a rotating shaft, and the connecting rod can rotate for angle adjustment; the connecting rod is of a telescopic structure, and the angle and the height of the water retaining umbrella cover are adjusted by adjusting the angle and the height of the connecting rod. The base is installed on a tunnel rock drilling rack, and the water retaining umbrella faces and guides underground water to flow to the bottom of a tunnel. According to the water retaining device, the exquisite design is adopted, underground water gushing out along cracks of the tunnel wall can be efficiently guided, water flows to the bottom of the tunnel smoothly through the specially-made water retaining cloth, and damage possibly caused by underground water interference to construction equipment in the drilling construction process is remarkably reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of waterproofing and water retaining of drilling holes in a tunnel smooth blasting rock drilling stand, and in particular relates to an adjustable water retaining device for a tunnel rock drilling stand and a use method thereof. Background Art

[0002] Tunnel construction is a key engineering project to achieve terrain crossing. It can cross natural obstacles such as mountains and rivers and effectively connect areas that are isolated due to the geographical environment. This not only greatly improves the efficiency and convenience of transportation, but also, as an important link in the road or railway network, significantly shortens travel distances and reduces the need for detours, thereby reducing logistics costs and improving the performance of the entire transportation system. As the construction progress accelerates, the requirements for construction quality and efficiency are also constantly increasing.

[0003] In the current tunnel construction practice, smooth blasting is a mainstream tunnel excavation technology that requires operators to stand on a rock drilling rig to perform drilling tasks. During the drilling and blasting process, the hydrostatic and hydrodynamic pressures of groundwater may aggravate the expansion of cracks in the rock mass, thereby increasing the permeability of the rock mass. After the blasting operation is completed, the water-retaining rock mass is destroyed, often resulting in water seepage or water gushing on the tunnel wall. Especially during the tunnel excavation process, if water-bearing strata such as limestone and sandstone are encountered, or affected by fault zones and underground rivers, the original groundwater dynamic balance may be destroyed due to excavation activities, causing a large amount of groundwater to flow into the tunnel along the cracks caused by blasting, which not only damages the construction equipment, but also threatens the lives of the construction workers. Therefore, in this context, the design of the water retaining device of the rock drilling rig is particularly important. It not only ensures construction safety and improves the efficiency of excavation operations, but also helps to reduce construction costs, playing a vital role in the entire tunnel construction project.

[0004] Although existing technologies have proposed a variety of solutions for tunnel water inrush and drainage, water seepage and water inrush in the tunnel wall still cause damage to construction equipment and have an adverse impact on the safety and work efficiency of construction workers. This remains a thorny challenge currently faced. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides an adjustable water retaining device for a tunnel drilling rig and a method for using the same, which can effectively guide the groundwater gushing out of the cave wall after tunnel blasting to the bottom of the tunnel along the water guiding grooves on the waterproof cloth, thereby avoiding splashing of groundwater, protecting construction equipment and workers, and preventing water from interfering with the construction progress and possible damage to the equipment.

[0006] The technical solution of the present invention is as follows:

[0007] In a first aspect of the present invention, there is provided an adjustable water retaining device for a tunnel drilling rig, comprising a base, a connecting rod and a water retaining umbrella surface, wherein the water retaining umbrella surface is supported by one end of the connecting rod, and the other end of the connecting rod is mounted on the base via a rotating shaft, and the connecting rod can be rotated for angle adjustment, and the connecting rod is a telescopic structure, and the angle and height of the water retaining umbrella surface can be adjusted by adjusting the angle and height of the connecting rod; the base is mounted on the tunnel drilling rig, and the water retaining umbrella surface is used to guide groundwater to flow to the bottom of the tunnel.

[0008] In some embodiments of the present invention, the rotating shaft includes a rotating shaft ring, a rotating shaft body, a toothed ring and a fixed rod, the end of the connecting rod extends into the rotating shaft body, the end of the connecting rod is provided with a fixing hole, the fixing rod is arranged in the rotating shaft body and passes through the fixing hole, the rotating shaft body is arranged in the rotating shaft ring, and the rotating shaft body and the rotating shaft ring are fixed by the toothed ring.

[0009] In some embodiments of the present invention, the latch ring is a semicircular ring structure, with protrusions provided at both ends of the latch ring, the protrusions cooperate with the grooves on the rotating shaft ring, and the internal teeth on the latch ring mesh with the external teeth on the rotating shaft body.

[0010] In some embodiments of the present invention, the base is a plate structure, and bolt holes are provided on the base to accommodate cross bolts, and the cross bolts are fixed on the steel mesh of the rock drilling rig.

[0011] In some embodiments of the present invention, the water-retaining umbrella cover includes an umbrella cover frame and a waterproof cloth, and the waterproof cloth is installed on the umbrella cover frame by the adsorption effect of a magnet.

[0012] In some embodiments of the present invention, the umbrella frame includes a first arc-shaped rod and a second arc-shaped rod, and the first arc-shaped rod and the second arc-shaped rod are connected by a first cross bar, a second cross bar and a third cross bar from top to bottom, and the first cross bar and the second cross bar are connected by a cross bar and a vertical bar.

[0013] In some embodiments of the present invention, a hinged connector is provided at a middle position of the vertical rod, and the cross rod is connected to the end of the connecting rod through the hinged connector.

[0014] In some embodiments of the present invention, the waterproof cloth is composited with multiple layers of highly wear-resistant polyester and nylon fibers, and vertical water-conducting grooves are provided on the waterproof cloth.

[0015] In a second aspect of the present invention, a tunnel drilling rig is provided, comprising an adjustable water retaining device, a base of the adjustable water retaining device is fixed on the tunnel drilling rig, and a plurality of the adjustable water retaining devices are provided.

[0016] In a third aspect of the present invention, a method for using an adjustable water retaining device is provided, comprising:

[0017] Assemble the water-retaining umbrella and firmly fix the waterproof cloth on the umbrella frame; then, connect and fix the water-retaining umbrella with the connecting rod by hinged connection; then, anchor the base with the working platform by cross bolts; after the base is fixed, embed the connecting rod into the reserved groove of the rotating shaft body, and adjust the angle and length of the connecting rod according to the construction requirements and the tunnel diameter to ensure that the water-retaining umbrella fits tightly with the tunnel wall;

[0018] At the same time, according to the area and position of the water gushing area, the width of the water retaining umbrella can be adjusted by telescopic cross rods to adapt to different working conditions; for large-area water gushing cracks, multiple water retaining devices can be deployed on the same working platform for parallel use.

[0019] One or more technical solutions of the present invention have the following beneficial effects:

[0020] 1. The present invention provides a water-retaining umbrella surface, and the device can effectively guide the groundwater gushing out of the tunnel wall after the tunnel blasting along the water-guiding groove on the waterproof cloth to the bottom of the tunnel. This avoids the splashing of groundwater, protects construction equipment and operators, and prevents water from interfering with the construction progress and possible damage to equipment.

[0021] 2. The lateral width of the water retaining umbrella surface of the present invention is designed with an adjustment mechanism, so that it can be flexibly adjusted according to the actual area of ​​water inrush. This adjustability ensures that the device can adapt to different tunnel sections and different water inrush conditions, improving the adaptability and efficiency of construction. Overall, the present invention provides a safe and practical technical solution for groundwater control during tunnel construction, which helps to improve construction quality and ensure worker safety.

[0022] 3. The design of the retractable connecting rod of the present invention provides greater flexibility for adapting to different tunnel diameters. This design allows the size of the rock drilling platform to be adjusted according to the actual size of the tunnel, ensuring that the water retaining umbrella surface can effectively contact the water-gushing fissures, thereby guiding the groundwater to flow to the predetermined area. Such a function not only improves the applicability of the device, but also optimizes the construction efficiency.

[0023] 4. In addition, the entire device is designed to be easy to assemble and disassemble, so that the water retaining device can be quickly deployed or removed on site to cope with different construction stages and needs. All parts of the device are made of steel, which is wear-resistant and not easy to rust, which ensures the long-term durability and stability of the device, and also means that these parts can be used repeatedly in different engineering projects, improving resource utilization efficiency and reducing construction costs.

[0024] 5. The present invention can ensure that the operator's drilling equipment operates in a dry environment, effectively reducing the safety risks caused by groundwater erosion of the equipment and improving the working efficiency of the equipment. At the same time, because the interference of groundwater is minimized, the drilling accuracy is significantly improved, which plays a vital role in ensuring the quality and accuracy of tunnel construction. The adjustable water retaining device has a high degree of flexibility and can be adjusted in time according to actual construction conditions and needs to adapt to construction requirements under different geological conditions. It solves the problem of water seepage and water inrush that has long plagued tunnel construction, and also improves construction safety, efficiency and accuracy. It is of great value in promoting the advancement of tunnel construction technology and improving project quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of an adjustable water retaining device in Example 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the base in Example 1 of the present invention;

[0027] FIG3(a) is a schematic diagram of the structure of a rotating shaft ring, FIG3(b) is a schematic diagram of the structure of a rotating shaft body, and FIG3(c) is a schematic diagram of the structure of a latch ring;

[0028] Figure 4 This is a schematic diagram of the structure of the fixing rod and the connecting rod in Example 1 of the present invention;

[0029] FIG. 5( a ) is a front view of the umbrella frame, and FIG. 5( b ) is a side view of the umbrella frame;

[0030] Figure 6 A schematic diagram of installing multiple adjustable water retaining devices on a rock drilling stand in Example 1 of the present invention;

[0031] Among them, 1. base; 101. cross bolt; 2. connecting rod; 201. connecting rod fixing hole; 3. water-retaining umbrella cover; 301. waterproof cloth; 302. first cross bar; 303. second cross bar; 304. third cross bar; 305. cross bar; 306. arc rod; 307. umbrella cover frame; 308. water guide groove; 309. hinged connector; 310. vertical rod; 4. rotating shaft; 401. rotating shaft ring; 402. rotating shaft body; 403. gear ring; 404. fixing rod; 405. rotating shaft body fixing hole; 406. rotating shaft ring groove. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] Example 1

[0034] In a typical embodiment of the present invention, an adjustable water retaining device for a tunnel drilling stand is provided, such as Figure 1 As shown, it includes a base 1, a connecting rod 2 and a water-retaining umbrella cover 3, wherein the water-retaining umbrella cover 3 is supported by one end of the connecting rod 2, and the other end of the connecting rod 2 is installed on the base through a rotating shaft 4, and the connecting rod 2 can be rotated to adjust the angle. The connecting rod 2 is a telescopic structure, and the angle and height of the water-retaining umbrella cover 3 can be adjusted by adjusting the angle and height of the connecting rod 2; the base 1 is installed on a tunnel drilling rig, and the water-retaining umbrella cover 3 guides groundwater to flow to the bottom of the tunnel.

[0035] Specifically, the base 1, as the basic component of the device, is responsible for providing a solid support foundation and connecting with the rock drilling rig. The connecting rod 2 acts as an intermediate connecting element between the base 1 and the water-retaining umbrella 3. Its design allows the height and inclination angle of the water-retaining umbrella to be flexibly adjusted according to on-site needs, thereby effectively guiding the gushing groundwater to flow along the cave wall and the water-retaining umbrella to the bottom of the tunnel. Through this adjustable design, the device can adapt to different construction environments and geological conditions, improving the applicability and flexibility of the device. The connection between the base 1 and the connecting rod 2 is achieved through a rotating shaft, and the rotating shaft 4 is a key mechanical element to achieve the height and angle adjustment of the connecting rod. In addition, the connection between the connecting rod and the water-retaining umbrella adopts a hinge mechanism, which allows the water-retaining umbrella to rotate relative to the connecting rod, thereby adjusting the direction of the water-retaining umbrella to guide the water flow more efficiently.

[0036] like Figure 2 As shown, the base 1 is a plate structure, and bolt holes are provided on the base to accommodate cross bolts 101. The cross bolts 101 are fixed on the steel mesh of the rock drilling rig, so that the base can be firmly anchored on the working platform. The working platform of the rock drilling rig itself is made of woven steel bars, and this structure provides the necessary strength and stability. In order to strengthen the connection between the base and the steel mesh, cross-shaped steel bars are welded to the bolt heads, which increases the bonding strength between the bolts and the base and prevents the bolts from rotating or loosening when subjected to heavy pressure or vibration. The cross bolt connection method can ensure that there is sufficient contact area between the base and the steel working platform, thereby effectively fixing the base in the desired position. This fixing mechanism not only ensures the stability of the system, but also makes the installation and disassembly process simple and easy, allowing construction personnel to quickly adjust the device according to specific construction needs.

[0037] The key function of the base is to provide a stable support for the entire water retaining device. To achieve this, the base adopts a positioning bolt and a rotating shaft design. Specifically, the base passes through the working platform of the rock drilling rig through a cross bolt and is tightly combined with the rock drilling rig. This design utilizes the common fixing method of bolts in mechanical structures, ensuring that the device can maintain a high degree of stability in various construction environments and prevent displacement or shaking during drilling operations.

[0038] In this embodiment, the connecting rod 2 is composed of a retractable rectangular steel tube, the design of which optimizes the structural stability and torsion resistance. Compared with the traditional round steel tube, the rectangular cross section provides higher rigidity. The rectangular steel tube is made of high-strength steel to ensure its bearing capacity and durability.

[0039] like Figure 3(a)-3(c) as well as Figure 4 As shown, the rotating shaft 4 includes a rotating shaft ring 401, a rotating shaft body 402, a tooth ring 403 and a fixing rod 404. The end of the connecting rod 2 extends into the rotating shaft body 402. The bottom end of the connecting rod 2 is provided with a connecting rod fixing hole 201, so that a stable connection with the rotating shaft body 402 can be achieved by inserting the fixing rod 404. This design also ensures stability and safety during the connection process. In order to adapt to the use in harsh environments such as tunnels, the surface of the connecting rod 2 is treated with a special coating to enhance its corrosion resistance, thereby ensuring long-term performance.

[0040] Furthermore, the fixing rod 404 is arranged in the rotating shaft body 402 and passes through the connecting rod fixing hole 201. The rotating shaft body 402 is arranged in the rotating shaft ring 401. The rotating shaft body 402 and the rotating shaft ring 401 are fixed by a toothed ring 403. A rotating shaft ring groove 406 is arranged on the rotating shaft ring 401 to provide a rotation space for the connecting rod 2.

[0041] Furthermore, the latch ring 403 is a semicircular ring structure, with protrusions provided at both ends of the latch ring 403 , the protrusions cooperate with the grooves on the rotating shaft ring 401 , and the inner teeth on the latch ring 403 mesh with the outer teeth on the rotating shaft body 402 .

[0042] The specific installation steps of the rotating shaft are as follows: the rotating shaft body 402 is inserted and fixed in the rotating shaft ring 401, and then the connecting rod 2 is pushed into the groove reserved in the rotating shaft body 402. Next, the fixing rod 404 is inserted through the connecting rod fixing hole 201 and the rotating shaft body fixing hole 405 to achieve structural stability. Finally, the tooth ring 403 and the groove of the rotating shaft ring 401 are engaged with each other. With the help of the engagement of the sawtooth at the top of the rotating shaft body 402 and the tooth ring 403, and the concave-convex matching of the tooth ring 403 and the rotating shaft ring 401, the adjustment of the connecting rod angle is facilitated, while ensuring the firm connection between the base and the rotating shaft.

[0043] The rotating shaft body 402 is the core component of the adjustment mechanism, which is combined with the rotating collar 401 to provide the necessary rotation ability. The stability of the connecting rod 2 after the angle adjustment is guaranteed by the matching of the fixing rod 404 with the corresponding fixing hole. The latch ring 403 forms an anti-rotation mechanism with the serrations of the rotating shaft body 402, which increases the reliability of the structure, and its convex part is combined with the concave part of the rotating collar 401, which allows the operator to easily adjust the angle of the connecting rod 2 while maintaining the tightness and stability of the entire structural unit.

[0044] In this embodiment, the rotating shaft body 402 and the connecting rod 2 are fixedly connected by a fixing rod passing through the reserved circular holes of the two; the serrations of the latch ring 403 are effectively engaged with the serrations of the rotating shaft body 402. This design can prevent the rotating shaft from accidentally rotating during the adjustment process, ensuring that the position of the water-retaining umbrella surface is precisely controllable. The protruding part of the latch ring is inserted into the groove of the rotating shaft ring, thereby fixing the rotating shaft body. This structure not only ensures the stability of the rotating shaft, but also allows the staff to easily adjust the position of the rotating shaft by operating the latch ring, thereby precisely controlling the angle and height of the water-retaining umbrella surface.

[0045] As shown in Figures 5(a) and 5(b), the water-retaining umbrella cover 3 includes an umbrella cover frame 307 and a waterproof cloth 301. A strong magnet is provided in the groove on the back of the waterproof cloth 301, and the waterproof cloth 301 is installed on the umbrella cover frame through the adsorption effect of the magnet, so that the waterproof cloth is fixed to the umbrella cover frame 307. This design uses magnetic force as a connecting force, simplifies the installation process and improves the sealing and stability of the water-retaining umbrella cover. As the core component of this device, the water-retaining umbrella cover is connected to the connecting rod on the base, and its horizontal width and vertical height can be adjusted according to the actual working conditions. Such a design allows construction personnel to flexibly adjust the water-retaining umbrella cover according to the geometric structure and water gushing conditions inside the tunnel, so as to most effectively guide the water flow and protect workers and equipment from the influence of groundwater.

[0046] The umbrella frame includes a first arc-shaped rod and a second arc-shaped rod, which are connected from top to bottom by a first crossbar 302, a second crossbar 303 and a third crossbar 304, and the first crossbar and the second crossbar are connected by a crossbar 305 and a vertical bar 310, wherein the first crossbar 302, the second crossbar 303 and the third crossbar 304 can be laterally extended to adjust the width of the umbrella surface to adapt to tunnel spaces of different sizes. Specifically, the first crossbar 302 and the second crossbar 303 are welded at the intersection with the crossbar 305, the vertical bar 310 and the arc-shaped rod 306 to ensure the firmness and rigidity of the structure. The arc-shaped rod 306 is made of rectangular steel with good toughness, which can withstand a certain range of bending without being damaged, and at the same time exhibits excellent wear resistance and rust resistance.

[0047] In this embodiment, the crossbar is in the form of a steel rectangular cross section, and is structurally connected to the arc rod through a precise welding process. The surface of the rectangular crossbar is finely polished to present a smooth appearance. This surface treatment not only helps the smooth laying of the waterproof fabric, but also enhances the adsorption capacity of the built-in strong magnets on the surface of the crossbar and the arc rod, thereby ensuring that the fabric can be stably fixed under various conditions.

[0048] Furthermore, the design of the arc rod also adopts the form of steel rectangular cross section, which fully considers the mechanical properties of the material and its durability in practical application. The steel used for the arc rod has excellent toughness, which enables the rod to bend elastically within a certain range, and this feature enables it to adapt to changing installation conditions. At the same time, the material also has significant wear resistance and corrosion resistance, which together ensure the stability and reliability of the arc rod during long-term use.

[0049] Furthermore, the cross bar is welded with the two arc bars and the first and second cross bars to enhance the structural rigidity of the entire umbrella frame. This enhancement is necessary because it can prevent the frame from being deformed or damaged when subjected to water flow pressure, ensuring that the water-retaining umbrella can effectively guide the water flow and protect construction personnel and equipment.

[0050] Furthermore, an articulated connector 309 is provided in the middle of the vertical rod, and the cross rod 305 is firmly articulated with the connecting rod 2 through the articulated connector 309. The articulated connector 309 adopts an existing structure, and the water-retaining umbrella surface can be rotated to a certain angle through the articulated connector 309, that is, the water-retaining umbrella surface is ensured to fit the tunnel wall. At the same time, because the water-retaining umbrella surface is vertically supported by the connecting rod 2, the water-retaining umbrella surface is ensured to be fixed at a certain angle after fitting with the tunnel wall.

[0051] In this embodiment, the design of the connecting rod 2 adopts two retractable rectangular steel pipes to adapt to tunnels of different widths and different working conditions. In order to increase the rigidity of the connecting rod, a short connecting rod is welded between the two steel pipes. Such a design improves the stability and bearing capacity of the entire connecting rod structure.

[0052] In this embodiment, the waterproof cloth 301 is made of multiple layers of highly wear-resistant polyester and nylon fibers. This composite material ensures the necessary tensile strength and durability of the waterproof cloth. In the structural design, a sandwich is specially set at the groove position, and a strong magnet is built into the sandwich. This unique design allows the waterproof cloth to be firmly adsorbed on the crossbars and arc rods of the supporting structure through magnetic force, thereby maintaining the integrity and sealing effect of the water retaining system. In addition, the design also allows the adsorption position of the waterproof cloth to be flexibly adjusted to adapt to different site conditions and installation requirements.

[0053] In order to enhance its hydrodynamic performance, the waterproof cloth 301 is provided with a vertical water-guiding groove 308. The waterproof cloth is pre-processed to form the water-guiding groove 308. This design is used to guide the water flow to flow along the groove direction and drain smoothly, thereby preventing groundwater from overflowing from the edge of the cloth, effectively reducing the impact force of the water flow on the cloth, reducing potential wear and tear, and extending the service life of the waterproof cloth. In addition, the improved flow path effectively prevents groundwater from overflowing from the side edge of the waterproof cloth, thereby maintaining the integrity of the water retaining structure and ensuring its optimal water retaining performance.

[0054] The method of using the adjustable water retaining device provided in this embodiment is as follows:

[0055] First, the water retaining umbrella and connecting rods need to be assembled and fixed to the base. This step is the basis for establishing an effective water retaining system. After that, the whole device is firmly mounted on the working platform of the rock drilling rig using cross bolts. The cross bolts here may refer to bolts with a cross structure to enhance the stability of the connection between the device and the working platform.

[0056] Next, the length and angle of the connecting rods are adjusted according to the specific construction requirements and tunnel diameter. This adjustment ensures that the water retaining device can adapt to tunnel spaces of different sizes and shapes, as well as different construction requirements.

[0057] During the tunnel construction process, water retaining devices are fixed to the corresponding positions according to the specific locations of water inrush. For arch spandrels with large water inrush, two water retaining devices can be installed at the corresponding positions of the upper and lower working platforms to more effectively guide the groundwater to the bottom of the tunnel and then to the ground. This arrangement can cope with different water inrush situations encountered during construction, provide flexible solutions, and ensure the safety of construction workers and construction efficiency.

[0058] The water retaining device can effectively reduce the negative impact on the construction environment caused by tunnel seepage and water inrush events, ensuring that workers can work in relatively dry conditions. This design not only improves work efficiency, but also reduces safety risks such as falls that may be caused by slippery environments. In addition, the water retaining device can also help slow down the corrosion of water on construction equipment, thereby extending the service life of the equipment. This allows construction workers to focus more on tasks such as drilling, reduce frequent stoppages caused by dealing with water damage, and improve overall construction efficiency.

[0059] Example 2

[0060] In a typical embodiment of the present invention, a tunnel drilling stand is provided, comprising the adjustable water retaining device described in Example 1, such as Figure 6 As shown, the base of the adjustable water retaining device is fixed on the tunnel drilling stand, and a plurality of the adjustable water retaining devices are provided.

[0061] Example 3

[0062] In a typical embodiment of the present invention, a method for using an adjustable water retaining device is provided, comprising:

[0063] Assemble the water-retaining umbrella and firmly fix the waterproof cloth on the umbrella frame; then, connect and fix the water-retaining umbrella with the connecting rod by hinged connection; then, anchor the base with the working platform by cross bolts; after the base is fixed, embed the connecting rod into the reserved groove of the rotating shaft body, and adjust the angle and length of the connecting rod according to the construction requirements and the tunnel diameter to ensure that the water-retaining umbrella fits tightly with the tunnel wall;

[0064] At the same time, according to the area and position of the water gushing area, the width of the water retaining umbrella can be adjusted by telescopic cross rods to adapt to different working conditions; for large-area water gushing cracks, multiple water retaining devices can be deployed on the same working platform for parallel use.

[0065] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. An adjustable water retaining device for a tunnel drilling stand, characterized in that: It comprises a base, a connecting rod and a water-retaining umbrella surface, wherein the water-retaining umbrella surface is supported by one end of the connecting rod, and the other end of the connecting rod is mounted on the base through a rotating shaft, and the connecting rod can be rotated to adjust the angle, and the connecting rod is a telescopic structure, and the angle and height of the water-retaining umbrella surface can be adjusted by adjusting the angle and height of the connecting rod; The base is installed on the tunnel drilling platform, and the water retaining umbrella faces and guides the groundwater to flow toward the bottom of the tunnel.

2. The adjustable water retaining device for a tunnel drilling stand according to claim 1, characterized in that: The rotating shaft includes a rotating shaft ring, a rotating shaft body, a toothed ring and a fixing rod, the end of the connecting rod extends into the rotating shaft body, the end of the connecting rod is provided with a fixing hole, the fixing rod is arranged in the rotating shaft body and passes through the fixing hole, the rotating shaft body is arranged in the rotating shaft ring, and the rotating shaft body and the rotating shaft ring are fixed by the toothed ring.

3. The adjustable water retaining device for a tunnel drilling stand according to claim 2, characterized in that: The latch ring is a semicircular ring structure, with protrusions arranged at both ends of the latch ring, the protrusions cooperate with the grooves on the rotating shaft ring, and the inner teeth on the latch ring mesh with the outer teeth on the rotating shaft body.

4. The adjustable water retaining device for a tunnel drilling stand according to claim 1, characterized in that: The base is a plate structure, and bolt holes are arranged on the base to accommodate cross bolts, and the cross bolts are fixed on the steel mesh of the rock drilling stand.

5. The adjustable water retaining device for a tunnel drilling stand according to claim 1, characterized in that: The water-retaining umbrella cover comprises an umbrella cover frame and a waterproof cloth, and the waterproof cloth is installed on the umbrella cover frame through the adsorption effect of a magnet.

6. The adjustable water retaining device for a tunnel drilling stand according to claim 5, characterized in that: The umbrella frame includes a first arc-shaped rod and a second arc-shaped rod, wherein the first arc-shaped rod and the second arc-shaped rod are connected sequentially from top to bottom through a first crossbar, a second crossbar and a third crossbar, and the first crossbar and the second crossbar are connected through a crossbar and a vertical rod.

7. The adjustable water retaining device for a tunnel drilling stand according to claim 6, characterized in that: A hinged connector is provided in the middle of the vertical rod, and the cross rod is connected to the end of the connecting rod through the hinged connector.

8. The adjustable water retaining device for a tunnel drilling stand according to claim 5, characterized in that: The waterproof cloth is composited with multiple layers of highly wear-resistant polyester and nylon fibers, and vertical water-conducting grooves are arranged on the waterproof cloth.

9. A tunnel drilling stand, comprising the adjustable water retaining device according to any one of claims 1 to 8, characterized in that: The base of the adjustable water retaining device is fixed on the tunnel rock drilling stand, and a plurality of the adjustable water retaining devices are provided.

10. A method for using the adjustable water retaining device according to any one of claims 1 to 8, characterized in that: include: Assemble the water-retaining umbrella cover and firmly fix the waterproof cloth on the umbrella cover frame; Subsequently, the water-retaining umbrella is connected and fixed to the connecting rod by hinged connection; then, the base is anchored to the working platform by cross bolts; after the base is fixed, the connecting rod is embedded in the reserved groove of the rotating shaft body, and the angle and length of the connecting rod are adjusted according to the construction requirements and the tunnel diameter to ensure that the water-retaining umbrella fits tightly to the tunnel wall; At the same time, according to the area and position of the water gushing area, the width of the water retaining umbrella can be adjusted by telescopic cross rods to adapt to different working conditions; for large-area water gushing cracks, multiple water retaining devices can be deployed on the same working platform for parallel use.

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