Self-propelled segmented sand blasting prevention water drainage device
The self-propelled segmented anti-sandblasting drainage device solves the problems of difficult construction and blockage of drainage pipes in water-rich sandy strata, achieving efficient and safe drainage and adapting to different engineering needs.
Patent Information
- Application Number
- CN202520507053.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-21
AI Technical Summary
When constructing tunnels in water-rich sandy strata, the existing drainage pipes are difficult to install, prone to collapse, and easily clogged, affecting the stability of the surrounding rock and the drainage function.
A self-propelled segmented anti-sandblasting and drainage device is adopted, which combines drilling tools, drainage pipes, membrane bag sealing structures and grouting pipes to achieve simultaneous drilling, drainage pipe insertion and tail grouting sealing. The design of filter layer and drainage hole prevents surrounding rock debris from entering the drainage pipe. Foamed polyurethane water glass double slurry is used to quickly seal the pores.
It improves construction efficiency and safety, ensures unobstructed drainage channels, lowers the ground water level, extends the service life of drainage pipes, adapts to different engineering needs, and prevents sandblasting and blockage.
Smart Images
Figure CN223854315U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tunnel engineering water discharge technical field, specifically, relate to a self-advancing sectional sand blowout prevention water discharge device. BACKGROUND
[0002] Tunnels are built in soft strata such as clay, fault, karst, and water-rich sand strata such as fully weathered granite and related sand strata. The risk of gushing water and sand burst in water-rich sand strata is relatively high, so it is necessary to discharge water in advance or reduce the water content of surrounding rock during construction.
[0003] At present, the most common water discharge method for tunnel surrounding rock is to drill a water discharge hole to the surrounding rock water layer to guide and drain water from the water discharge hole. However, due to the loose water-rich sand strata, it is extremely easy to collapse during drilling, and it is extremely difficult to form a hole, which not only affects the water discharge function, but also affects the stability of the surrounding rock.
[0004] In the prior art, when the water discharge pipe is constructed, the hollow inside the water discharge pipe, the fine particles of the surrounding rock are easy to flow into the tunnel drainage system from the water discharge pipe; and the head of the water discharge pipe is not closed or not tightly closed, the surrounding rock debris has entered the water discharge pipe when the water discharge pipe is inserted into the water discharge hole; and the end of the water discharge pipe is damaged during the process of being punched into the surrounding rock, which will directly cause the water discharge pipe to fail to drain water and cause the tunnel drainage system to be blocked. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a self-advancing sectional sand blowout prevention water discharge device, which can solve the problems raised in the background art.
[0006] The technical scheme of the utility model is as follows:
[0007] The utility model provides a self-advancing sectional sand blowout prevention water discharge device, which comprises a water discharge pipe, one end of the water discharge pipe is provided with a drilling cutter, the other end of the water discharge pipe is provided with a grouting pipe, a membrane bag plugging structure is arranged between the grouting pipe and the water discharge pipe, and a connecting structure in communication with the membrane bag plugging structure is further arranged, and the connecting structure is detachably connected with a drilling machine.
[0008] In some technical schemes of the utility model, the drilling cutter comprises a cutter head, a plurality of cutter teeth are arranged on the end face of the cutter head, and the side of the cutter head away from the cutter teeth is detachably connected with the water discharge pipe.
[0009] In some technical schemes of the utility model, the water discharge pipe comprises an outer shell, a plurality of array-arranged drainage holes are formed in the outer side wall of the outer shell; a grid lining in the shape of a cylinder is arranged in the outer shell, a filter layer in the shape of a cylinder is arranged between the outer side wall of the grid lining and the inner wall of the water discharge pipe, the filter layer is fixedly connected with the grid lining, part of the filter layer is exposed in the drainage hole, and the two ends of the grid lining are connected with the cutter head and the membrane bag plugging structure respectively.
[0010] In some technical solutions of the utility model, the membrane bag plugging structure includes a pipe body, one end of the pipe body is sleeved with a membrane bag, the other end of the membrane bag is provided with a connecting head communicated with the membrane bag, a circular ring for fixing the membrane bag is installed on the outer side wall of the pipe body and the connecting head, and the connecting head is detachably connected with the grid lining.
[0011] In some technical solutions of the utility model, the grouting pipe includes a grouting extension pipe, one end of the grouting extension pipe is communicated with the pipe body, and the other end of the grouting extension pipe is detachably connected with the connecting structure.
[0012] In some technical solutions of the utility model, the outer diameter of the cutter head is greater than the outer diameter of the drain pipe.
[0013] In some technical solutions of the utility model, a notch is formed in the outer side wall of the grouting extension pipe, a partition plate is installed in the grouting extension pipe, a protective shell is installed on the outer side wall of the grouting extension pipe along the axial direction, the protective shell, the grouting extension pipe and the partition plate form an installation channel after being enclosed, and the membrane bag grouting pipe is installed in the installation channel.
[0014] In some technical solutions of the utility model, an extension pipe is further included and is installed between the membrane bag plugging structure and the drain pipe.
[0015] Compared with the prior art, the utility model has at least the following advantages or beneficial effects: by combining the drilling machine, the drilling cutter, the drain pipe and the membrane bag plugging structure, the drilling, the insertion of the drain pipe and the tail grouting plugging are simultaneously completed, the problems such as sand blasting that may be caused in the traditional operation of first drilling and then inserting the pipe are avoided, and the construction efficiency and safety are improved. The drain pipe is reasonably designed, is provided with a filter layer, a drainage hole and a grid lining, can effectively guide the water flow in the strong permeable water-rich stratum, reduces the water level of the stratum, and meanwhile, the filter layer prevents the surrounding rock debris from entering the drain pipe, ensuring the smoothness of the drainage passage. Through the threaded connection design of the extension pipe, the length of the drain pipe can be flexibly adjusted according to the stratum conditions and construction requirements, ensuring that the drain pipe can be accurately inserted into the strong permeable water-rich stratum and adapting to different engineering requirements; the membrane bag plugging structure adopts the foamed polyurethane water glass double slurry, has the characteristics of rapid expansion and hardening, can effectively close the pores between the drain pipe and the hole wall in a short time, prevent sand and water from overflowing, fix the drain pipe at the same time, and ensure the engineering quality; the drilling cutter is not only used for rock breaking drilling, but also can plug the end of the drain pipe, prevent the surrounding rock debris from entering the drain pipe, and protect the end of the drain pipe from being damaged during drilling, prolonging the service life of the drain pipe. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a whole combination structure schematic view of the utility model.
[0017] Figure 2 It is the local section view structure schematic diagram of the drain pipe in the utility model.
[0018] Figure 3 It is the structure schematic diagram of the grid lining in the utility model.
[0019] Figure 4 It is the structure schematic diagram of the extension pipe in the utility model.
[0020] Figure 5 It is the whole schematic diagram of the membrane bag grouting structure in the utility model.
[0021] Figure 6 It is the installation structure schematic diagram of the grouting extension pipe and the membrane bag grouting pipe in the utility model.
[0022] Figure 7 It is the structure schematic diagram of the connecting structure in the utility model.
[0023] Figure 8 It is the structure schematic diagram of the drilling cutter in the utility model.
[0024] Figure 9 It is the side view structure schematic diagram of the grouting extension pipe in the utility model.
[0025] Reference signs:
[0026] 1, connecting structure, 2, grouting extension pipe, 3, membrane bag grouting pipe, 4, circular ring, 5, membrane bag, 6, extension pipe, 7, drain pipe, 8, drilling cutter, 501, pipe body, 502, connecting head, 201, isolation plate, 202, protective shell, 701, shell, 702, filter layer, 703, grid lining, 801, cutter tooth, 802, cutter head, 803, connecting rod. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the utility model.
[0029] EMBODIMENT
[0030] This utility model provides a self-propelled segmented anti-sandblasting and drainage device 7, such as... Figures 1-9 As shown, the system includes a drainage pipe 7, with a drilling tool 8 installed at one end and a grouting pipe installed at the other end. A membrane bag sealing structure is installed between the grouting pipe and the drainage pipe 7. It also includes a connecting structure 1 connected to the membrane bag sealing structure, which is detachably connected to the drilling machine. The drilling tool 8 is used to break the rock during drilling, allowing the hole for the drainage pipe 7 to be installed. The drainage pipe 7, as the main drainage structure, needs to be inserted into a highly permeable, water-rich stratum for drainage, drainage, and pressure reduction. The drilling tool 8 also seals the end of the drainage pipe 7 to prevent surrounding rock debris from entering it. Furthermore, the drilling tool 8 protects the drainage pipe 7, preventing damage to its end inside the borehole. The membrane bag sealing structure seals the gap between the drainage pipe 7 and the borehole wall, preventing sand and water from overflowing and simultaneously fixing the drainage pipe 7. The connecting structure 1 is a connecting structure used to connect the drilling machine and the drain pipe 7, so that the torque and thrust of the drilling machine can be transmitted to the drilling tool 8 in the drain hole, which facilitates the drilling operation of the above structure.
[0031] Preferably, it also includes an extension pipe 6, which is mainly used to adjust the length of the entire drainage pipe 7. Multiple extension pipes 6 can be spliced according to design requirements to adjust the length of the drainage pipe 7. Any two extension pipes 6 can be detachably connected by a threaded connection, and any one extension pipe 6 can be detachably connected to the end of the drainage pipe 7 by a threaded connection. It is used to adjust the length during self-advancement so that the drainage pipe 7 is in a highly permeable water-rich stratum.
[0032] In some technical solutions of this utility model, the drilling tool 8 includes a cutter head 802, and a plurality of cutting teeth 801 are installed on the end face of the cutter head 802. A connecting rod 803, which is threadedly connected to the drain pipe 7, is installed on one side of the cutter head 802 opposite to the cutting teeth 801. The cutting teeth 801, the cutter head 802, and the connecting head 502 are integrally die-cast and then cut, and the material is cemented carbide. The cutting teeth 801 can change shape according to the application scenario, such as conical or spherical.
[0033] In some technical solutions of this utility model, the outer diameter of the cutter head 802 is larger than the outer diameter of the drain pipe 7.
[0034] Preferably, the cutter head 802 has a diameter of φ140mm and a height of 70mm. The connecting rod 803 is in the shape of a lead screw, and the external thread of the connecting rod 803 is manufactured by a machine tool. Correspondingly, an internal thread is opened in the drain pipe 7 to mesh with it. The connecting rod 803 and the drain pipe 7 are detachably connected by a threaded connection. The external thread diameter of the connecting rod 803 is φ70mm and the length is 80mm.
[0035] In some technical schemes of the utility model, the length of the drain pipe 7 is 8 m in the embodiment, and other lengths can also be selected, and the length can be customized.
[0036] The drain pipe 7 comprises an outer shell 701, a plurality of arrayed drainage holes are formed in the outer side wall of the outer shell 701, the outer shell 701 is formed by splicing two half-shell structures arranged symmetrically, the aperture of the drainage hole is 20 mm, and any two adjacent drainage holes are arranged at intervals, and the interval is 10 mm. A cylindrical grid lining 703 is installed in the outer shell 701, the grid lining 703 serves as an internal support and front and rear connecting member of the entire drain pipe 7, the grid lining 703 is a steel circular shell with an outer diameter of φ108 mm and a thickness of 3 mm, a rectangular window with a size of 60 mm*1200 mm is equidistantly formed in the outer surface of the grid lining 703, the rectangular window is used for guiding water into the drain pipe, the longitudinal interval of the rectangular window is 30 mm, and four are arranged in a ring shape, and the grid lining 703 is connected with the outer shell 701 through bolts. A cylindrical filter layer 702 is installed between the outer side wall of the grid lining 703 and the inner wall of the drain pipe 7, the filter layer 702 is non-woven fabric, and the thickness is selected to be 5 mm thick non-woven fabric.
[0037] The filter layer 702 and the grid lining 703 are bound on the grid lining 703 through PVC rolling strips, and part of the filter layer 702 is exposed in the drainage hole. The outer shell 701 is arranged to protect the filter layer 702 and prevent the filter layer 702 from being damaged during drilling.
[0038] In some technical schemes of the utility model, the two ends of the grid lining 703 are welded to form joints communicated with the grid lining 703, and external threads are formed in the joints to facilitate splicing of the grid lining 703 and other components in the structure.
[0039] In some technical schemes of the utility model, the membrane bag plugging structure comprises a pipe body 501, the pipe body 501 is a steel shell with an outer diameter of φ108 mm and a thickness of 5 mm. One end of the pipe body 501 is sleeved with a membrane bag 5, and the membrane bag 5 is made of waterproof nylon cloth. The other end of the membrane bag 5 is provided with a connecting head 502 communicated with the membrane bag 5, and the outer side walls of the pipe body 501 and the connecting head 502 are both provided with a circular ring 4 for fixing the membrane bag 5, the circular ring 4 is made of steel material, and the circular ring 4 is in clearance fit with the pipe body 501 and the connecting head 502. The connecting head 502 is detachably connected with one of the joints on the grid lining 703 in a threaded connection mode. The membrane bag plugging structure further comprises a membrane bag grouting pipe 3, and the membrane bag grouting pipe 3 is communicated with the membrane bag 5. The membrane bag grouting pipe 3 is a PVC soft pipe with a diameter of 10 mm, the grouting material is foamed polyurethane water glass double slurry, has expansibility, and the membrane bag 5 can be expanded to a diameter of 300 mm after grouting.
[0040] In some technical schemes of the utility model, still include grouting extension pipe 2, one end of grouting extension pipe 2 is communicated with pipe body 501, the other end of grouting extension pipe 2 is connected with connecting structure 1.Grating extension pipe 2 is used for fixing membrane bag grouting pipe 3, makes membrane bag grouting pipe 3 be located at the outside of grouting extension pipe 2, and grouting is convenient.
[0041] In some technical schemes of the utility model, the outside wall of grouting extension pipe 2 is provided with a notch, a partition plate 201 is installed in grouting extension pipe 2, a protective shell 202 is installed on the outside wall of pipe body 501 along its axial direction, the protective shell 202, pipe body 501 and partition plate 201 form an installation channel for installing grouting pipe after being enclosed, membrane bag grouting pipe 3 is installed in the installation channel, so that the installation channel protects grouting pipe from being damaged by hole wall friction during drilling.
[0042] The area enclosed by partition plate 201 and grouting extension pipe 2 is used for guiding the seepage water discharged from drain pipe 7, so as to guide the seepage water into the main drainage structure, avoid the seepage water from dropping in the tunnel, and keep the tunnel dry.
[0043] The above structure realizes the synchronous completion of drilling, insertion of drain pipe 7 and tail grouting plugging, avoids the problems such as sand blasting caused by drilling hole first and then inserting pipe.Meanwhile, the drain pipe 7 section with filtering capacity prevents the occurrence of formation erosion loss during drainage.
[0044] The specific operation process is as follows:
[0045] According to the estimation of the distance between the water storage source and the operation surface according to the geophysical prospecting result, the number of extension pipes 6 to be used is designed.
[0046] The connecting structure is connected with the drilling machine, and the cutter head is connected with the drain pipe 7.The tail of drain pipe 7 is connected with the connecting structure.
[0047] The drilling machine is started to drill, and when the drain pipe 7 drills into the formation until it is completely inserted, the connection with the connecting structure is disconnected, the extension pipe 6 is added, the extension pipe 6 is connected with the drain pipe 7 and the connecting structure, and drilling continues.
[0048] When the extension pipe 6 enters the formation, the connection with the connecting structure is disconnected, the membrane bag plugging structure is spliced, drilling continues, and when the membrane bag grouting pipe 3 enters, the connection with the connecting structure is disconnected.The grouting extension pipe 2 is added, and the grouting extension pipe 2 is spliced with the membrane bag plugging structure to continue drilling, and when drilling to the specified position, the hole is obviously water, at this time, drilling is stopped, and the membrane bag 5 is filled with foamed polyurethane water glass double slurry through the grouting pipe, and the slurry has the characteristics of rapid foaming, swelling and hardening within 2 min.
[0049] After the slurry in the membrane bag 5 swells and hardens, the connection between the connecting structure and the drilling machine can be disconnected, and the construction of the drain hole is completed.
[0050] The preferred embodiments of the present application have been described above with the preferred embodiments, but are not intended to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A self-advancing segmented sand-purge water-discharge device, characterized in that, The utility model provides a kind of drilling tool and grouting pipe structure, including drain pipe (7), one end of the drain pipe (7) is equipped with drilling tool (8), the other end of the drain pipe (7) is equipped with grouting pipe, membrane bag blocking structure is equipped between the grouting pipe and the drain pipe (7), further including the connecting structure (1) that is communicated with the membrane bag blocking structure, the connecting structure (1) is detachably connected with drilling machine.
2. A self-advancing segmented sand-diverting flow release device according to claim 1, wherein, The drilling tool (8) includes a cutter head (802), a plurality of cutter teeth (801) are mounted on the end face of the cutter head (802), and the side of the cutter head (802) away from the cutter teeth (801) is detachably connected with the drain pipe (7).
3. A self-advancing segmented sand-diverter drain device according to claim 2, wherein, The drain pipe (7) includes an outer shell (701), a plurality of arrayed drainage holes are formed on the outer side wall of the outer shell (701); a cylindrical grid lining (703) is mounted in the outer shell (701), a cylindrical filter layer (702) is mounted between the outer side wall of the grid lining (703) and the inner wall of the drain pipe (7), the filter layer (702) is fixedly connected with the grid lining (703), part of the filter layer (702) is exposed in the drainage hole, and the two ends of the grid lining (703) are connected with the cutter head (802) and the membrane bag blocking structure, respectively.
4. A self-advancing segmented sand-diverter drain device according to claim 3, wherein, The membrane bag blocking structure includes a pipe body (501), one end of the pipe body (501) is sleeved with a membrane bag (5), the other end of the membrane bag (5) is provided with a connecting head (502) communicated therewith, a circular ring (4) for fixing the membrane bag (5) is mounted on the outer side wall of the pipe body (501) and the connecting head (502), the connecting head (502) is detachably connected with the grid lining (703); further including a membrane bag grouting pipe (3), the membrane bag grouting pipe (3) is communicated with the membrane bag (5).
5. A self-advancing segmented sand-diverter drain device according to claim 4, wherein, The grouting pipe includes a grouting extension pipe (2), one end of the grouting extension pipe (2) is communicated with the pipe body (501), and the other end of the grouting extension pipe (2) is detachably connected with the connecting structure (1).
6. A self-advancing segmented sand-diverting drain device according to claim 2, wherein, The outer diameter of the cutter head (802) is greater than the outer diameter of the drain pipe (7).
7. A self-advancing segmented sand-diverter drain device according to claim 5, wherein, A notch is formed on the outer side wall of the grouting extension pipe (2), a partition plate (201) is mounted in the grouting extension pipe (2), a protective shell (202) is mounted on the outer side wall of the grouting extension pipe (2) along the axial direction, and the protective shell (202), the grouting extension pipe (2) and the partition plate (201) form an installation channel after being enclosed, and the membrane bag grouting pipe (3) is mounted in the installation channel.
8. A self-advancing segmented sand-diverter drain device according to any one of claims 1-7, characterized in that, Further including an extension pipe (6), the extension pipe (6) is mounted between the membrane bag blocking structure and the drain pipe (7).