Goaf abandoned roadway plugging device and construction method
By using a sealing device with protective bags in goaf grouting treatment, the problem of slurry leakage caused by rupture of the mold bag during the deposition process is solved, which improves the treatment effect and reduces the cost.
Patent Information
- Application Number
- CN202510167312.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-15
- Publication Date
- 2025-04-25
AI Technical Summary
In goaf grouting treatment project, mold bags are easily affected by sharp materials when they are lowered into inclined shaft tunnels, resulting in slurry loss, affecting the treatment effect and increasing material costs.
A goaf abandoned tunnel sealing device is adopted, including a grouting pipe, a mold bag body with a coaxial sleeve installed outside the grouting pipe, and a protective bag with a coaxial sleeve installed outside the mold bag body. The outer peripheral wall of the protective bag is provided with a tear-free opening, and the tear-free strip is pulled by the control assembly to expose the tear-free opening, reducing the possibility of the mold bag rupture.
Through the design of the protective bag, the possibility of the mold bag breaking during the deposition process is reduced, thereby reducing the phenomenon of slurry leakage, improving the effect of grouting treatment and reducing material costs.
Smart Images
Figure CN119878283A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of inclined shaft tunnel plugging, and in particular to a device for plugging abandoned tunnels in goaf areas and a construction method. Background Art
[0002] In the grouting treatment project of goaf area, due to the constraint of the treatment scope, the abandoned inclined shaft tunnels inside and outside the treatment scope must be sealed and treated. Usually, personnel cannot enter such abandoned inclined shaft tunnels in goaf area. In this regard, in the prior art, some people choose the mold bag method of grouting sealing. The mold bag method refers to drilling a hole on the surface, lowering the processed mold bag and the grouting pipe structure into the inclined shaft tunnel together, and filling the mold bag completely by grouting to form a sealing structure.
[0003] When the mold bag is lowered into the inclined shaft tunnel, it may be broken by the influence of sharp objects on the bottom plate and wall plate of the inclined shaft tunnel, resulting in slurry loss. As a result, the slurry within the treatment range flows through the inclined shaft tunnel and the tunnel to the deep goaf that does not need to be treated or the goaf outside the grouting range, seriously affecting the grouting treatment effect, causing a large amount of slurry to leak out, and increasing material costs. Therefore, further improvement is needed. Summary of the invention
[0004] In order to reduce the possibility of slurry leakage after the mold bag is damaged, the present application provides a device for plugging abandoned tunnels in goaf areas and a construction method.
[0005] The present application provides a device and construction method for blocking abandoned tunnels in goaf areas, which adopts the following technical solutions: A device for plugging abandoned tunnels in goaf areas comprises a grouting pipe for extending into an inclined shaft tunnel, a mold bag body coaxially sleeved outside the grouting pipe and a protective bag coaxially sleeved outside the mold bag body, the outer peripheral wall of the protective bag is provided with an easy-tear opening, the easy-tear opening is arranged along the entire length of the protective bag in the height direction, the protective bag is provided with an easy-tear strip at the easy-tear opening, the grouting pipe is provided with a control component for pulling the easy-tear strip to expose the easy-tear opening, the inner wall of the protective bag is provided with a fixing surface fixed to the outer peripheral wall of the mold bag body; the control component includes a control rope and a guide member arranged on the outer peripheral wall of the grouting pipe, the control rope comprises a first connecting section connected to one end of the easy-tear strip, a penetration section penetrated through the guide member and a pulling section arranged parallel to the length direction of the grouting pipe in the direction away from the easy-tear strip, and the end of the pulling section away from the penetration section is exposed in the inclined shaft tunnel.
[0006] By adopting the above-mentioned technical scheme, the grouting pipe is extended into the inclined shaft tunnel, and the mold bag body is driven to be extended into the inclined shaft tunnel together, wherein the protection bag is used to protect the mold bag body, so as to reduce the possibility of rupture of the mold bag body and the inner wall of the inclined shaft tunnel due to the influence of sharp objects during the extension process, thereby reducing the possibility of leakage during subsequent grouting through the grouting pipe.
[0007] Regarding the setting of the protection bag, if it is made of elastic rubber and is directly placed outside the mold bag body, it will expand due to the grouting pressure, but due to its own elasticity, it may squeeze the slurry to affect the sealing effect. For this reason, an easy-tear opening is set on the protection bag, and then the easy-tear strip is torn through the control component. For tearing the easy-tear strip, the pulling end of the control rope can be pulled to pull the easy-tear strip when the grouting pipe is grouted to the height of the lowest end of the mold bag body or before grouting, so as to expose the easy-tear opening, so that when grouting is subsequently carried out, the mold bag body can be driven to expand and expand with the grouting pressure, and expand from the easy-tear opening to press against the inner wall of the inclined shaft tunnel. Among them, the setting of the control component is mainly to tear the tear strip to reduce the possibility of leakage during the grouting process due to the incomplete tearing of the tear strip. Since the tear strip is in the inclined shaft tunnel, it is not easy to reach in with hands to tear the tear strip. For this purpose, a control rope is provided, and the control rope is pulled through the exposed pulling section to drive the tear strip to be torn away from the tearing mouth, so that the subsequent mold bag body can expand under the grouting pressure.
[0008] Preferably, the tear strip is integrally formed with the protective bag, and the protective bag is provided with two tear lines along its entire length to form the required tear strip.
[0009] By adopting the above technical solution, the tear line can be processed on the protective bag in advance by relevant equipment to form a corresponding tear strip, so that the tear strip can be separated from the tear opening after the control rope is pulled.
[0010] Preferably, the tear strip is an easy-tear tape adhered to the protective bag on both sides of the easy-tear opening, the easy-tear tape is arranged on the side of the protective bag close to the mold bag body, and the first connecting section is arranged on the side of the protective bag close to the mold bag body.
[0011] By adopting the above technical solution, for the tear strip integrally formed with the protective bag, if the processed tear line is not in place, it may not be able to be pulled, thereby affecting the subsequent expansion of the mold bag body. For this, the tear strip is set as an easy-tear tape and adhered to the protective bag on both sides of the easy-tear mouth. Since the connection strength is relatively poor, it is easy to be pulled by the control rope to tear the easy-tear tape from the protective bag, so that the success rate of tearing the easy-tear tape from the protective bag is relatively high.
[0012] Since the easy-tear tape used may be relatively thin, if it is set on the side of the protective bag away from the mold bag body, it may be broken by the sharp end on the inner wall of the inclined shaft tunnel during the process of extending into the inner wall of the inclined shaft tunnel. Therefore, by setting the easy-tear tape on the side of the protective bag close to the mold bag body, the possibility of the easy-tear tape breaking can be reduced, and the friction between the control rope and the inner wall of the inclined shaft tunnel during the pulling process can be reduced. As the friction force increases, the pulling control rope may break. Therefore, the first connecting section is also set on the side of the protective bag close to the mold bag body.
[0013] Preferably, the first connecting section is arranged on a side of the protection bag away from the mold bag body, and the protection bag is provided with a covering sheet for covering the first connecting section.
[0014] By adopting the above technical solution, for the control rope arranged on the side of the protective bag away from the mold bag body, when the control rope is pulled, friction may occur between the control rope and the inner wall of the inclined shaft tunnel, thereby affecting the pulling of the easy-tear strip. In this regard, a covering sheet is provided to cover the control rope and the easy-tear strip, thereby reducing the possibility of the control rope breaking due to contact with sharp objects as the grouting pipe extends into the inclined shaft tunnel or during the subsequent pulling process.
[0015] Preferably, the control rope is provided with a pushing member on the pulling section, and the pushing member is used to push the mold bag body to move towards the direction close to the inner wall of the inclined shaft tunnel as the pulling section is pulled.
[0016] By adopting the above technical solution, a pushing member is provided on the pulling section. As a force is applied to the pulling section outside the inclined shaft tunnel to drive the easy-tear strip to separate from the easy-tear mouth, the pushing member is also activated to push the mold bag body toward the inner wall of the inclined shaft tunnel, so that the mold bag body is unfolded before grouting through the grouting pipe to reduce the possibility of the easy-tear strip not being pulled into place, which plays a certain insurance role and also facilitates reducing the possibility of leakage due to insufficient subsequent grouting pressure.
[0017] Preferably, the pushing member includes a push rod arranged on the inner wall of the mold bag body, a hinged rod hinged to the push rod, and a mounting ring hinged to the hinged rod, the push rod is arranged at the upper end of the mold bag body, the initial state of the end of the hinged rod away from the push rod is arranged at the lower end of the mold bag body, and the length direction of the hinged rod is inclined to the length direction of the grouting pipe; the pulling section is provided with a second connecting section detachably connected to the mounting ring, and the mounting ring is driven to move toward the upper end of the mold bag body as the pulling section is pulled.
[0018] By adopting the above technical solution, before the tear strip is pulled away from the protective bag, the initial state of the end of the hinged rod away from the push rod is set at the lower end of the mold bag body, and the angle between the hinged rod and the grouting pipe is small. As the pulling section is forced, the fixed block is driven to move toward the upper end of the mold bag body, thereby driving the hinged rod, so that the angle between the hinged rod and the grouting pipe becomes larger and larger. Since the length of the hinged rod itself remains unchanged, the push rod is driven to move toward the inner wall of the inclined shaft tunnel, so that the mold bag body is unfolded while the tear strip is torn.
[0019] Preferably, a connecting ring is provided around the outer peripheral wall of the grouting pipe, and a connecting piece for fixing the mold bag body is provided on the grouting pipe. The pushing piece includes a spring arranged between the mold bag body and the grouting pipe, a sliding rod coaxially penetrated by the spring, and a limit block penetrated by the sliding rod. The end of the sliding rod away from the limit block is fixedly connected to the mold bag body, the sliding rod is provided with a positioning hole for the limit block to penetrate, the limit block is provided with a second through hole for the pulling section to penetrate, and the pulling section is provided with a second connecting section detachably connected to the limit block. When the limit block penetrates the positioning hole, the spring is in a compressed state; when the pulling section is pulled to make the limit block slide out of the positioning hole, the spring forces the mold bag body to move toward the inner wall close to the inclined shaft tunnel.
[0020] By adopting the above technical solution, before the tear strip is pulled to tear off the protective bag, at this time, the limit block is penetrated through the positioning hole so that the spring is in a compressed state. As force is applied to the pulling section, the limit block is driven to move in a direction away from the positioning hole to slide out of the positioning hole. At this time, the mold bag body moves toward the inner wall of the inclined shaft tunnel under the action of the spring to expand the mold bag body and abut against the inner wall of the inclined shaft tunnel.
[0021] Preferably, the grouting pipe is provided with a connecting piece for fixing the mold bag body, and the pulling section is provided with an unlocking piece for unlocking the grouting pipe from the mold bag body.
[0022] By adopting the above technical solution, the mold bag body is fixed by a connecting piece, thereby reducing the possibility of loosening when inserted into a deep well or during grouting. Since the grouting pipe is usually reused, an unlocking piece is provided on the pulling section to unlock the grouting pipe from the mold bag body.
[0023] A construction method for a plugging device for abandoned tunnels in goaf areas comprises the following steps: Determine the size of the grouting pipe and the mold bag body: measure the size of the corresponding inclined shaft tunnel to determine the length and diameter of the grouting pipe, and then determine the required size of the mold bag body; Installation of the plugging device: first install the protective bag outside the mold bag body, and install the control rope and the tear strip, then put the mold bag body outside the grouting pipe, and then pass the control rope through the guide piece; Lowering the plugging device: lowering the installed plugging device to a certain height in the inclined shaft tunnel; Carry out grouting: After grouting to a certain height, stop grouting first. At this time, pull the control rope to tear the easy-tear strip off the protective bag, and then continue grouting. With the grouting pressure, the mold bag body is expanded to move toward the inner wall of the inclined shaft tunnel for sealing. When the slurry is completely filled, pull out the grouting pipe and wait for the slurry to solidify to complete the grouting and sealing work of the inclined shaft tunnel.
[0024] In summary, this application has the following beneficial effects: 1. A protective bag is provided to protect the mold bag body. The mold bag body is expanded by pulling the control rope to pull the tear strip to the protective bag to expose the tear opening. With the grouting pressure, the mold bag body is expanded to press against the inner wall of the inclined shaft tunnel to perform the plugging work.
[0025] 2. The tear strip can be formed integrally with the protective bag, and the relevant tear line can be processed by relevant equipment, or the tear strip can be adhered to the protective bag on both sides of the tear opening to be pulled along with the control rope.
[0026] 3. By arranging a pushing member on the pulling section, as a force is applied to the pulling section outside the inclined shaft tunnel to drive the easy-tear strip to separate from the easy-tear opening, the pushing member is also activated to push the mold bag body to move toward the inner wall of the inclined shaft tunnel, so as to unfold the mold bag body before grouting through the grouting pipe to reduce the possibility of the easy-tear strip not being pulled into place, which plays a certain insurance role and also facilitates to reduce the possibility of leakage due to insufficient pressure in subsequent grouting. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 is a schematic diagram of the structure of Example 1 of the present application; Figure 2 is a schematic cross-sectional structural diagram of Example 1 of the present application; Figure 3 This is a schematic diagram of the structure in which the grouting pipe is inserted into the mold bag body in Example 1 of the present application; Figure 4 yes Figure 2 A partial enlarged schematic diagram of part A; Figure 5 is a schematic diagram of the structure of the easy-tear strip in Example 1 of the present application; Figure 6 is a schematic diagram of the top view of the protective bag in Example 1 of the present application; Figure 7is a schematic diagram of the structure of Example 2 of the present application; Figure 8 is a schematic diagram of the connection structure between the first connection section and the mounting ring in Example 2 of the present application; Fig. 9 It is a structural diagram of Example 3 of the present application.
[0028] Explanation of the reference numerals in the accompanying drawings: 1. grouting pipe; 11. connecting ring; 12. slot; 2. mold bag body; 3. protective bag; 31. fixing surface; 32. easy-tear opening; 33. easy-tear strip; 34. easy-tear line; 4. connecting piece; 41. abutment ring; 42. block; 5. control assembly; 6. control rope; 61. first connecting section; 62. threading section; 63. pulling section; 64. second connecting section; 65. sliding ring; 7. guide piece; 8. unlocking piece; 9. pushing piece; 91. push rod; 92. hinged rod; 93. mounting ring; 94. spring; 95. sliding rod; 96. limiting ring; 97. limiting block. DETAILED DESCRIPTION
[0029] The following is combined with Figure 1-9 , further details of this application are given.
[0030] The embodiment of the present application discloses a device for plugging abandoned tunnels in goaf areas and a construction method.
[0031] Embodiment 1: A device for plugging abandoned tunnels in goaf areas, referring to Figure 1 , including a grouting pipe 1 for extending into the inclined shaft tunnel, a mold bag body 2 coaxially sleeved outside the grouting pipe 1, and a protective bag 3 coaxially sleeved outside the mold bag body 2. Among them, the upper end of the grouting pipe 1 is exposed outside the inclined shaft tunnel. It should be noted that the part of the grouting pipe 1 exposed outside the inclined shaft tunnel can be stabilized by hand support, or fixed by other fixings (not shown in the figure), and the fixings can include a support frame for the grouting pipe 1 to pass through and erected outside the wellhead, a fixing ring fixedly connected to the outside of the grouting pipe 1, and bolts passing through the fixing ring to be threadedly connected to the support frame. The specific settings are based on the needs and will not be elaborated here.
[0032] In this embodiment, Figure 2 As shown, the lower end of the grouting pipe 1 can extend into the mold bag body 2, and the mold bag body 2 is compressed along its own radial direction to be contained in the protective bag 3, so that the injected slurry is all in the mold bag body 2 to form a certain blocking shape, and it is not easy to flow into other interconnected inclined shafts. Figure 3As shown, the lower end of the grouting pipe 1 is slidably passed through the mold bag body 2 and extended into the inclined well. At this time, the mold bag body 2 abuts against the inner wall of the inclined well after grouting expansion. However, this method sets the sealing device as a plug, which is usually suitable for the inclined well in a certain closed state or with other sealing devices for sealing, and is set specifically according to needs.
[0033] In this embodiment, the mold bag body 2 can be made of polypropylene, polyester fiber or nylon, which is specifically set according to needs, and the corresponding specifications are selected according to the on-site inspection to select the mold bag body 2 with the corresponding mesh number, which will not be elaborated here.
[0034] Reference Figure 4 , wherein, for the fixation of the mold bag body 2, a connecting piece 4 for fixing the mold bag body 2 is provided on the grouting pipe 1. Specifically, a connecting ring 11 is coaxially sleeved on the outer peripheral wall of the grouting pipe 1, and the connecting piece 4 includes an abutting ring 41 abutting against the upper end of the mold bag body 2 and a clamping block 42 arranged on the abutting ring 41, wherein the edge of the mold bag body 2 at the upper end abuts against the upper surface of the connecting ring 11, and a clamping groove 12 is opened on the upper surface of the abutting ring 41, and a plurality of clamping grooves 12 are arranged at intervals around the abutting ring 41, and the clamping block 42 is embedded in the clamping groove 12, and the clamping block 42 is arranged corresponding to the number of the clamping grooves 12.
[0035] Among them, the material of the protection bag 3 can be selected from a flexible material with wear-resistant effect, such as nylon, polyester, polyurethane, TPE, TPU, silicone or PU glue material. Since the protection bag 3 enters the inclined shaft tunnel along with the mold bag body 2 and is retained therein for sealing after grouting, from a cost perspective, a lower-cost material can be selected, and the specific setting is based on demand.
[0036] Reference Figure 5 , Figure 6 For the connection between the protection bag 3 and the mold bag body 2, specifically, a fixing surface 31 fixed to the outer peripheral wall of the mold bag body 2 is provided on the inner wall of the protection bag 3. The fixing surface 31 can be fixed to the mold bag body 2 by hot pressing equipment, or by adhesive fixation with glue (tape), which is specifically set according to needs.
[0037] Furthermore, in order to facilitate the expansion of the mold bag body 2 and reduce the influence of the protective bag 3 on the expansion of the mold bag body 2, in this embodiment, the outer wall of the protective bag 3 is provided with an easy-tear opening 32, and the easy-tear opening 32 is arranged along the entire length of the height direction of the protective bag 3. The protective bag 3 is provided with an easy-tear strip 33 at the easy-tear opening 32. For the setting of the easy-tear strip 33, the easy-tear strip 33 can be selected to be integrally formed with the protective bag 3. For this, two easy-tear lines 34 can be arranged along the entire length of the protective bag 3 through processing equipment to form the required easy-tear strip 33, so that the easy-tear strip 33 can be torn off from the protective bag 3.
[0038] It should be noted that the easy-tear strip 33 can be selected to be an easy-tear tape adhered to the protective bag 3 on both sides of the easy-tear opening 32. Since the easy-tear tape used may be relatively thin, if it is set on the side of the protective bag 3 away from the mold bag body 2, it may be broken by the sharp end on the inner wall of the inclined shaft during the process of extending into the inner wall of the inclined shaft. At this time, the easy-tear tape can be set on the side of the protective bag 3 close to the mold bag body 2.
[0039] Back to Figure 2 In order to reduce the possibility that the mold bag body 2 exposed at the tearing opening 32 will be punctured by sharp objects after the tearing strip 33 is torn before extending into the inclined shaft tunnel, in this embodiment, a control component 5 for pulling the tearing strip 33 to expose the tearing opening 32 is provided on the grouting pipe 1.
[0040] Reference Figure 2 , Figure 4 In this embodiment, the control assembly 5 specifically includes a control rope 6 and a guide member 7 arranged on the outer peripheral wall of the grouting pipe 1. For the material of the control rope 6, a rope made of nylon, polyester fiber or polyester and the like can be selected, depending on the specific setting. Among them, for the convenience of explanation, in this embodiment, the control rope 6 includes a first connecting section 61 fixedly connected to one end of the easy-tear strip 33, a penetration section 62 penetrated through the guide member 7, and a pulling section 63 arranged parallel to the length direction of the grouting pipe 1 in the direction away from the easy-tear strip 33. Among them, the length direction of the first connecting section 61 is parallel to the length direction of the easy-tear strip 33. For the connection between the first connecting section 61 and the easy-tear strip 33, it can be fixed by hot pressing, or fixed by glue, or the first connecting section 61 is penetrated through the easy-tear strip 33 and then tied and fixed. It is specifically set according to the needs, and the fixing method is not limited to the above-mentioned ones.
[0041] Furthermore, since friction may occur between the control rope 6 and the inner wall of the inclined shaft tunnel when the control rope 6 is pulled, thereby affecting the pulling of the tear strip 33, the first connecting section 61 can be arranged on the side of the protective bag 3 away from the mold bag body 2, and the protective bag 3 is provided with a covering sheet (not shown in the figure) for covering the first connecting section 61.
[0042] The guide member 7 can be a guide wheel rotatably connected to the outer peripheral wall of the grouting pipe 1, or a guide block, which is specifically set according to the needs. In this embodiment, the guide wheel is used for demonstration. Further, in order to reduce the possibility that the grouting pipe 1 is difficult to be taken out due to the set guide wheel when the grouting pipe 1 is taken out later, at this time, the sum of the diameter of the guide wheel and the spacing between the grouting pipe 1 needs to be less than the difference between the inner and outer diameters of the connecting ring 11, or a groove is opened on the outer peripheral wall of the grouting pipe 1, and the guide wheel is built into the groove, and a space for the control rope 6 to pass through is left between the guide wheel and the groove.
[0043] It should be noted that, for the method in which the lower end of the grouting pipe 1 extends into the mold bag body 2, Figure 2 As shown, at this time, the first connecting section 61 is fixedly connected to the lower end of the tear strip 33, the penetration section 62 is arranged above the mold bag body 2, and the guide member 7 is arranged above the abutment ring 41, as shown in FIG. Figure 3 As shown, for the method in which the lower end of the grouting pipe 1 is slidably inserted into the mold bag body 2, at this time, the first connecting section 61 and the upper end of the tear strip 33 are fixedly connected, and the insertion section 62 is arranged below the mold bag body 2. Among them, since the guide member 7 is arranged below the mold bag body 2, the end of the pulling section 63 away from the insertion section 62 is successively inserted into the connecting ring 11 and the abutment ring 41, and is exposed to the inclined shaft tunnel, so as to be pulled to tear the tear strip 33 away from the protective bag 3.
[0044] Reference Figure 3 and Figure 4 Furthermore, the pulling section 63 is provided with an unlocking member 8 for unlocking the grouting pipe 1 from the mold bag body 2. In this embodiment, the unlocking member 8 is specifically a fixed rope located between the pulling section 63 and the abutment ring 41. The fixed rope can be pre-fixed on the abutment ring 41 or on the control rope 6, which is specifically set according to the needs. It should be noted that the length of the fixed rope needs to be relatively long. When the block 42 is embedded in the card slot 12, and the pulling section 63 is pulled to completely tear the easy-tear strip 33 from the protective bag 3, the fixed rope is in a relaxed state. After the grouting is completed, the pulling section 63 is pulled again for a distance, and the fixed rope is in a taut state. At this time, the pulling force is transmitted to the abutment ring 41, so as to detach the block 42 on the abutment ring 41 from the card slot 12 to unlock the connection between the grouting pipe 1 and the mold bag body 2. In the process of pulling the control rope 6, in addition to pulling the easy-tear strip 33 to the protective bag 3, the connection between the grouting pipe 1 and the mold bag body 2 can also be unlocked.
[0045] The present application also discloses a construction method for a goaf abandoned tunnel plugging device, which specifically includes the following steps: Determine the dimensions of the grouting pipe 1 and the mold bag body 2: Measure the position and corresponding dimensions of the inclined shaft tunnel to be blocked, so as to determine the length and diameter of the grouting pipe 1, and then determine the required dimensions of the mold bag body 2.
[0046] Installation of the plugging device: first install the protective bag 3 with the control rope 6 installed on the outside of the mold bag body 2, then put the mold bag body 2 on the outside of the grouting pipe 1, and then after the edge of the mold bag body 2 at the upper end abuts against the abutment ring 41, insert the block 42 on the abutment ring 41 into the corresponding slot 12 to fix the mold bag body 2. At this time, pass the control rope 6 through the guide part 7, and tie and fix the fixing rope to the abutment ring 41 and the control rope 6 respectively to complete the installation of the plugging assembly.
[0047] Lowering the plugging device: lower the installed plugging device to a certain height in the inclined shaft tunnel. Pay attention to the control rope 6 during the lowering process, and be careful not to let the end away from the mold bag body 2 fall into the inclined shaft tunnel. A fixing ring is provided at the upper end of the grouting pipe 1 for the control rope 6 to pass through and tie and temporarily fix together.
[0048] Carry out grouting: After grouting to a certain height, stop grouting first. At this time, pull the control rope 6 to tear the tear strip 33 off the protective bag 3, and then continue grouting. With the grouting pressure, expand the mold bag body 2 to move toward the inner wall of the inclined shaft tunnel for sealing. When the slurry is completely filled, pull out the grouting pipe 1, wait for the slurry to solidify, and complete the grouting and sealing work of the inclined shaft tunnel.
[0049] Embodiment 2: Reference Figure 7 , which is different from the embodiment 1, the control rope 6 is provided with a pusher 9 on the pulling section 63, and the pusher 9 is used to push the mold bag body 2 to move in the direction close to the inner wall of the inclined shaft tunnel as the pulling section 63 is pulled. In this embodiment, the pusher 9 specifically includes a push rod 91 provided on the inner peripheral wall of the mold bag body 2, a hinged rod 92 hinged to the push rod 91, and a mounting ring 93 hinged to the hinged rod 92, wherein the push rod 91 is arranged in an arc shape, and a plurality of push rods 91 are arranged at intervals around the axis of the mold bag body 2, and a plurality of hinged rods 92 are correspondingly provided to respectively connect a plurality of push rods 91, the push rod 91 is arranged at the upper end of the mold bag body 2, and the initial state of the end of the hinged rod 92 away from the push rod 91 is arranged at the lower end of the mold bag body 2, and the length direction of the hinged rod 92 is inclined to the length direction of the grouting pipe 1. Among them, the mounting ring 93 is coaxially sleeved on the grouting pipe 1 so as to slide along the height direction.
[0050] A second connecting section 64 is fixedly connected to the pulling section 63, and one end of the second connecting section 64 away from the pulling end is connected to the upper surface of the mounting ring 93. The second connecting section 64 and the mounting ring 93 are detachably connected. Specifically, the second connecting section 64 can be temporarily fixed to the mounting ring 93 by tape or glue, and the mounting ring 93 is driven to move toward the upper end of the mold bag body 2 by pulling the pulling section 63. When it moves to abut against the connecting ring 11, when a certain resistance is found during pulling, the pulling is stopped, and grouting is then performed. The grouting is performed until the mounting ring 93 is submerged, and then a pulling force is applied. At this time, a larger force is required to pull the first connecting section 61 away from the mounting ring 93.
[0051] It should be noted that the pulling section 63 is also fixedly connected with a sliding ring 65, which is coaxially sleeved on the grouting pipe 1. The lower surface of the sliding ring 65 is connected to the second connecting section 64. In order to improve the pulling of the mounting ring 93, several second connecting sections 64 can be arranged at intervals around the axis of the mounting ring 93. When the first connecting section 61 is connected to the lower end of the tear strip 33, the lower end of the second connecting section 64 is sequentially inserted into the abutting ring 41 and the connecting ring 11. Figure 8 When the first connecting section 61 is connected to the upper end of the tear strip 33 , the pulling section 63 and the first connecting section 61 are disconnected, and one end of the first connecting section 61 away from the tear strip 33 is fixedly connected to the lower surface of the mounting ring 93 .
[0052] Embodiment 3: Reference Fig. 9 , which is different from the second embodiment, is that the pusher 9 includes a spring 94 arranged between the mold bag body 2 and the connecting ring 11, a slide bar 95 coaxially arranged on the spring 94, a limit ring 96 arranged below the connecting ring 11, and a limit block 97 arranged on the limit ring 96. Among them, the spring 94 and the slide bar 95 are arranged in a plurality of intervals around the axis of the connecting ring 11, wherein one end of the spring 94 is fixedly connected to the inner peripheral wall of the mold bag body 2, and the inner top wall of the mold bag body 2 protrudes a fixing portion for the other end of the spring 94 to be fixedly connected. Among them, one end of the slide bar 95 away from the limit block 97 is fixedly connected to the mold bag body 2, and the slide bar 95 is provided with a positioning hole for the limit block 97 to slide and engage. Among them, the limit ring 96 is coaxially sleeved on the grouting pipe 1, and the limit block 97 is arranged on the lower surface of the limit ring 96. The limit blocks 97 are arranged in a plurality of intervals around the axis of the limit ring 96, and the limit blocks 97 are arranged corresponding to the number of the slide bars 95. Likewise, in this embodiment, a second connecting section 64 detachably connected to the limiting ring 96 is provided on the pulling end.
[0053] It should be noted that the detachable connection between the second connecting section 64 and the limit block 97 can refer to the connection between the second connecting section 64 and the mounting ring 93 in Example 2. However, in the case where the second connecting section 64 is connected to the upper end of the tear strip 33, the end of the first connecting section 61 away from the tear strip 33 needs to be successively passed through the connecting ring 11 and the abutting ring 41 to be fixedly connected to the pulling section 63.
[0054] When the limit block 97 is inserted into the positioning hole, the spring 94 is in a compressed state; when the pulling section 63 is pulled to make the limit block 97 slide out of the positioning hole, the spring 94 forces the mold bag body 2 to move toward the inner wall of the inclined shaft tunnel.
[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A device for plugging abandoned tunnels in goaf areas, characterized in that: The invention comprises a grouting pipe (1) for extending into an inclined shaft tunnel, a mold bag body (2) coaxially sleeved outside the grouting pipe (1), and a protective bag (3) coaxially sleeved outside the mold bag body (2), wherein the outer peripheral wall of the protective bag (3) is provided with an easy-tear opening (32), the easy-tear opening (32) is arranged along the entire length of the height direction of the protective bag (3), the protective bag (3) is provided with an easy-tear strip (33) at the easy-tear opening (32), the grouting pipe (1) is provided with a control component (5) for pulling the easy-tear strip (33) to expose the easy-tear opening (32), and the protective bag ( 3) is provided with a fixing surface (31) fixed to the outer peripheral wall of the mold bag body (2); the control component (5) includes a control rope (6) and a guide member (7) arranged on the outer peripheral wall of the grouting pipe (1), the control rope (6) including, in a direction away from the tear strip (33), a first connecting section (61) connected to one end of the tear strip (33), a penetration section (62) penetrated through the guide member (7), and a pulling section (63) arranged parallel to the length direction of the grouting pipe (1), and the pulling section (63) has one end away from the penetration section (62) exposed to the inclined shaft tunnel.
2. The device for plugging abandoned tunnels in goaf areas according to claim 1, characterized in that: The tear strip (33) is integrally formed with the protection bag (3), and the protection bag (3) is provided with two tear lines (34) along its entire length direction to form the required tear strip (33).
3. The device for plugging abandoned tunnels in goaf areas according to claim 1, characterized in that: The easy-tear strip (33) is an easy-tear adhesive tape adhered to the protective bag (3) on both sides of the easy-tear opening (32); the easy-tear adhesive tape is arranged on a side of the protective bag (3) close to the mold bag body (2); and the first connecting section (61) is arranged on a side of the protective bag (3) close to the mold bag body (2).
4. The device for plugging abandoned tunnels in goaf areas according to claim 1, characterized in that: The first connecting section (61) is arranged on a side of the protection bag (3) away from the mold bag body (2), and the protection bag (3) is provided with a covering sheet for covering the first connecting section (61).
5. The device for plugging abandoned tunnels in goaf areas according to claim 1, characterized in that: The control rope (6) is provided with a pushing member (9) on the pulling section (63); the pushing member (9) is used to push the mold bag body (2) to move in a direction close to the inner wall of the inclined shaft tunnel as the pulling section (63) is pulled.
6. The device for plugging abandoned tunnels in goaf areas according to claim 5, characterized in that: The pushing member (9) comprises a push rod (91) arranged on the inner wall of the mold bag body (2), a hinged rod (92) hinged to the push rod (91), and a mounting ring (93) hinged to the hinged rod (92); the push rod (91) is arranged at the upper end of the mold bag body (2); the end of the hinged rod (92) away from the push rod (91) is initially arranged at the lower end of the mold bag body (2); the length direction of the hinged rod (92) is inclined to the length direction of the grouting pipe (1); the mounting ring (93) is coaxially sleeved on the grouting pipe (1); the pulling section (63) is provided with a second connecting section (64) detachably connected to the mounting ring (93); as the pulling section (63) is pulled, the mounting ring (93) is driven to move toward the upper end of the mold bag body (2).
7. The device for plugging abandoned tunnels in goaf areas according to claim 5, characterized in that: The outer peripheral wall of the grouting pipe (1) is provided with a connecting ring (11), and the grouting pipe (1) is provided with a connecting piece (4) for fixing the mold bag body (2). The pushing piece (9) comprises a spring (94) arranged between the mold bag body (2) and the grouting pipe (1), a sliding rod (95) coaxially penetrating the spring (94), and a limit block (97) penetrating the sliding rod (95), and the end of the sliding rod (95) away from the limit block (97) is fixedly connected to the mold bag body. The mold bag body (2) is provided with a positioning hole for the limit block (97) to pass through, and the pulling section (63) is provided with a second connecting section (64) detachably connected to the limit block (97). When the limit block (97) passes through the positioning hole, the spring (94) is in a compressed state; when the pulling section (63) is pulled to cause the limit block (97) to slide out of the positioning hole, the spring (94) forces the mold bag body (2) to move toward the inner wall of the inclined shaft tunnel.
8. The device for plugging abandoned tunnels in goaf areas according to claim 5, characterized in that: The grouting pipe (1) is provided with a connecting piece (4) for fixing the mold bag body (2), and the pulling section (63) is provided with an unlocking piece (8) for unlocking the grouting pipe (1) from the mold bag body (2).
9. A construction method for a goaf abandoned tunnel plugging device, applied to a goaf abandoned tunnel plugging device according to any one of claims 1 to 8, comprising the following steps: Determining the dimensions of the grouting pipe (1) and the mold bag body (2): measuring the dimensions of the corresponding inclined shaft tunnel to determine the length and diameter of the grouting pipe (1), and then determining the required dimensions of the mold bag body (2); Installation of the plugging device: first, the protective bag (3) is installed outside the mold bag body (2), and the control rope (6) and the tear strip (33) are installed, and then the mold bag body (2) is sleeved outside the grouting pipe (1), and then the control rope (6) is passed through the guide member (7); Lowering the plugging device: lowering the installed plugging device to a certain height in the inclined shaft tunnel; Carry out grouting: After grouting to a certain height, stop grouting first, then pull the control rope (6) to tear the easy-tear strip (33) off the protective bag (3), and then continue grouting. With the grouting pressure, the mold bag body (2) is expanded to move toward the inner wall of the inclined shaft tunnel to seal it. When the slurry is completely filled, remove the grouting pipe (1) and wait for the slurry to solidify, completing the grouting and sealing work of the inclined shaft tunnel.