Novel flow guide structure suitable for centralized outlet water treatment of tunnel side wall

Abstract

The utility model discloses a novel flow guide structure suitable for centralized water outlet treatment of a tunnel side wall, which comprises a radial water drainage hole arranged at a side wall arch foot position of a water accumulation section behind a tunnel lining, a steel floral tube with a water drainage hole is arranged in the radial water drainage hole, and a stepped longitudinal water drainage structure is arranged at the water outlet end of the steel floral tube. And a pressure relief wheel structure is arranged in the longitudinal drainage structure close to one side of the water outlet end of the steel floral tube. The underground water drainage device is simple in structure, small in damage to an existing tunnel structure and convenient and efficient in construction, high-pressure water gushing out of the radial drainage holes can be subjected to multi-stage pressure relief, underground water gushing out of the radial drainage holes is further effectively decelerated in combination with a pressure relief wheel structure, the underground water drainage capacity is greatly improved, and the construction efficiency is improved. And potential structural safety hazards caused by high-pressure water impact are effectively avoided.

Description

Technical Field

[0001] The utility model relates to a novel diversion structure suitable for centralized water discharge treatment of tunnel side walls, belonging to the technical field of tunnel leakage treatment construction. Background Art

[0002] Tunnel lining leakage is the most common hazard in tunnel engineering. The causes of leakage are diverse and the treatment is extremely difficult. If not properly treated, it may cause accidents such as traffic safety and structural safety. The potential hazards should not be underestimated. Especially in karst development areas or water-rich sections with broken surrounding rocks, a large amount of groundwater often accumulates behind the tunnel lining and often leaks into the tunnel in the form of pressurized streams, seriously affecting the normal operation of the tunnel. In response to the above-mentioned concentrated stream-like pressurized water outflow, the conventional treatment solutions of drilling grooves inside the lining to bury pipes for drainage or installing diversion troughs on the lining surface for drainage have certain structural safety hazards. The long-term impact of large water pressure is very likely to cause the drainage pipes covered only by a thin layer of concrete to be squeezed into the tunnel, or cause the diversion troughs anchored to the lining surface to loosen and fall off.

[0003] Patent CN 207332939 U discloses an automatic pressure-regulating and draining control device for tunnels in high-pressure, water-rich areas. It is installed at the bottom of cable troughs on both sides of an operating tunnel in a limited-discharge zone at the foot of a tunnel wall in this high-pressure, water-rich area. The device's water inlet is connected to the groundwater seepage pipe behind the lining, and its water outlet is connected to the tunnel's lateral drainage pipe. A water control valve 100, a Y-shaped pipe filter 200, and an adjustable drain valve 300 are sequentially positioned between the water inlet and outlet to form an automatic pressure-regulating and draining control mechanism. This automatic pressure-regulating and draining device flexibly integrates drainage from the lining's exterior with the tunnel's internal drainage system. The drain valve is set to automatically drain water as the water volume changes, adjusting the water pressure on the lining. However, the device's automatic pressure-regulating and draining control requires numerous components, resulting in high investment costs and time-consuming installation. Over extended use, the filter and valve require frequent replacement, resulting in high maintenance costs in terms of both manpower and financial resources.

[0004] Therefore, in view of the above situation, it is of great practical significance to study a new diversion structure suitable for centralized water discharge treatment on tunnel side walls. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a new diversion structure suitable for centralized water discharge treatment on tunnel side walls, so as to at least solve the problems mentioned in the background technology.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A new diversion structure suitable for centralized water discharge treatment on tunnel side walls comprises a radial drainage hole arranged at the arch foot of the side wall in the water accumulation section behind the tunnel lining; a steel flower pipe with drainage holes is arranged in the radial drainage hole; a stepped longitudinal drainage structure is provided at the water outlet end of the steel flower pipe; and a pressure relief wheel structure is provided in the longitudinal drainage structure near the water outlet end of the steel flower pipe.

[0008] Furthermore, according to the setting range of the radial drainage holes, an annular drainage groove is also provided on the tunnel lining, and the setting range of the stepped longitudinal drainage structure corresponds to the setting range of the annular drainage groove and the radial drainage holes.

[0009] Furthermore, the stepped longitudinal drainage structure includes at least two levels of upper longitudinal drainage structure and lower longitudinal drainage structure arranged from top to bottom along the water outlet end of the steel flower pipe. The pressure relief wheel structure is arranged in the upper longitudinal drainage structure and is opposite to the water outlet end of the steel flower pipe. The water inlet end of the lower longitudinal drainage structure is connected with the upper longitudinal drainage structure, and the water outlet end is connected with the transverse drainage ditch and the central drainage ditch of the tunnel.

[0010] Furthermore, an L-shaped water baffle with an opening facing the water outlet end of the steel pipe is provided on the outside of the upper longitudinal drainage structure. The pressure relief wheel structure includes a deceleration turntable arranged in the L-shaped water baffle and relative to the water outlet end of the steel pipe. A connecting rod is rotatably connected in the shaft hole of the deceleration turntable. Anchor plates are symmetrically provided at both ends of the connecting rod, and the anchor plates are fixedly connected to the inner side of the L-shaped water baffle.

[0011] Furthermore, the L-shaped water retaining plate is a stainless steel plate.

[0012] Furthermore, the upper and lower parts of the L-shaped water retaining plate are respectively provided with an upper anchoring edge and a lower anchoring edge, and a drainage trough interface is arranged at a certain interval at the upper end of the upper anchoring edge. The setting position of the drainage trough interface matches the position of the circumferential drainage trough set in the tunnel. The upper anchoring edge is tightly anchored to the tunnel wall by bolts, and the lower anchoring edge is suspended and anchored to the water inlet end of the lower longitudinal drainage structure by bolts so as to leave a drainage gap, so that the upper longitudinal drainage structure is connected to the lower longitudinal drainage structure through the drainage gap.

[0013] Furthermore, the lower longitudinal drainage structure includes a cable trench arranged along the lower drainage outlet range of the annular drainage trench, a trench bottom drainage trench connected to the transverse drainage trench is provided at the bottom of the cable trench, and an inward-inclined drainage cover is provided at the top.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model has a simple structure, convenient and efficient construction, less destructiveness to existing tunnel structures, and low construction cost. It concentrates the drainage of groundwater by drilling radial drainage holes at the foot of the tunnel wall, and sets a stepped longitudinal drainage structure at the outlet end of the radial drainage hole, which can make the high-pressure water gushing out of the radial drainage hole undergo multi-stage pressure relief. Combined with the pressure relief wheel structure, the groundwater gushing out of the radial drainage hole is further effectively decelerated, and finally drained into the central drainage ditch of the tunnel. It can effectively deal with sudden groundwater surges in operating tunnels. Compared with the conventional measures of draining groundwater with drainage pipes, the utility model greatly improves the tunnel groundwater drainage capacity, can effectively deal with the situation of large-flow groundwater leakage in the tunnel, effectively avoids the potential structural safety hazards brought about by high-pressure water impact, and greatly improves the safety and durability of the tunnel groundwater drainage structure.

[0016] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings, in which:

[0018] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0019] Figure 2 This is a partial enlarged cross-sectional view of the tunnel side wall footing;

[0020] Figure 3 It is a structural schematic diagram of the pressure relief wheel structure;

[0021] Figure 4 It is a structural diagram of the L-shaped water retaining plate;

[0022] Figure 5 This is a structural diagram of the inward-inclined drainage cover.

[0023] In the figure: 1. Radial drain hole; 2. Annular drainage trough; 3. Stepped longitudinal drainage structure; 3.1. Upper longitudinal drainage structure; 3.2 Lower longitudinal drainage structure; 3.3. L-shaped water retaining plate; 3.3.1. Upper anchoring edge; 3.3.2. Lower anchoring edge; 3.3.3. Drainage trough interface; 4. Pressure relief wheel structure; 4.1. Anchor plate; 4.2. Connecting rod; 4.3. Speed ​​reduction turntable; 5. Horizontal drainage ditch; 6. Central drainage; 7. Drainage trough at the bottom of the ditch; 8. Inward-inclined drainage cover plate. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1-Figure 5 As shown, the first embodiment of the present invention provides a novel diversion structure suitable for centralized water discharge treatment on tunnel sidewalls. It includes a radial drainage hole 1, located at the sidewall arch foot in the water-accumulating section behind the tunnel lining. A steel pipe with drainage holes is located within the radial drainage hole 1. A stepped longitudinal drainage structure 3 is provided at the water outlet end of the steel pipe. Furthermore, a pressure relief wheel structure 4 is located within the longitudinal drainage structure near the water outlet end of the steel pipe. The stepped longitudinal drainage structure allows for multi-stage pressure relief of the large amount of high-pressure water gushing from the radial drainage hole. Combined with the rotational deceleration principle of the pressure relief wheel structure, the groundwater gushing from the radial drainage hole is further effectively decelerated and ultimately directed into the tunnel's central drainage ditch. This significantly improves the tunnel's groundwater drainage capacity and effectively mitigates potential structural safety hazards caused by high-pressure water impact.

[0026] According to the setting range of the radial drainage holes 1, an annular drainage groove 2 is also provided on the tunnel lining, and the setting range of the stepped longitudinal drainage structure 3 corresponds to the setting range of the annular drainage groove 2 and the radial drainage holes 1.

[0027] The stepped longitudinal drainage structure 3 includes at least two levels, an upper longitudinal drainage structure 3.1 and a lower longitudinal drainage structure 3.2, arranged from top to bottom along the water outlet of the steel pipe. The pressure relief wheel structure is arranged within the upper longitudinal drainage structure 3.1 and opposite to the water outlet of the steel pipe. The water inlet of the lower longitudinal drainage structure 3.2 is connected to the upper longitudinal drainage structure 3.1, and the water outlet is connected to the tunnel's transverse drainage ditch 5 and central drainage ditch 6. In this embodiment, the stepped longitudinal drainage structure 3 is provided to provide multi-stage pressure relief for the high-pressure water gushing out of the steel pipe. Combined with the pressure relief wheel structure 4 provided within the upper longitudinal drainage structure, the groundwater gushing out from the radial drainage holes is further effectively decelerated, thereby effectively avoiding potential structural safety hazards caused by high-pressure water impact. The lower longitudinal drainage structure can be used not only for drainage but also for cable installation, greatly improving its utilization rate.

[0028] An L-shaped water baffle 3.3 with an opening facing the water outlet of the steel flower pipe is provided on the outside of the upper longitudinal drainage structure 3.1. The L-shaped water baffle 3.3 is a stainless steel plate. After being impacted by the water gushing out of the radial drainage hole 1, it has the advantages of corrosion resistance and impact resistance. The pressure relief wheel structure 4 includes a deceleration turntable 4.3 arranged in the L-shaped water baffle 3.3 and relative to the water outlet of the steel flower pipe. A connecting rod 4.2 is rotatably connected in the axial hole of the deceleration turntable 4.3. Anchor plates 4.1 are symmetrically provided at both ends of the connecting rod 4.2. The anchor plates 4.1 are fixedly connected to the inside of the L-shaped water baffle 3.3. By allowing the gushing water from the radial drainage hole 1 to spray onto the deceleration turntable 4.3, the water flow is decelerated, thereby reducing the impact of the water flow on the L-shaped water baffle 3.3, and the shock absorption effect is better.

[0029] The lower longitudinal drainage structure 3.2 includes a cable trench arranged along the lower drainage outlet range of the annular drainage trench 2, a trench bottom drainage trench 7 connected to the transverse drainage trench 5 is provided at the bottom of the trench, and an inward-inclined drainage cover plate 8 is provided at the top.

[0030] The inward-inclined drainage cover plate 8 includes an inward-inclined plate body 8.1, a transverse drainage groove 2 and a vertical transport lever groove 8.3, wherein the transverse drainage groove 8.2 is arranged at the top of the inward-inclined plate body 8.1 close to the upper longitudinal drainage structure 3.1, and the vertical transport lever groove 8.3 is arranged in the center of both sides of the inward-inclined plate body 8.1.

[0031] The upper and lower parts of the L-shaped water retaining plate 3.3 are respectively provided with an upper anchoring edge 3.3.1 and a lower anchoring edge 3.3.2, and a drainage groove interface 3.3.3 is provided at a certain interval on the upper end of the upper anchoring edge 3.3.1. The setting position of the drainage groove interface 3.3.3 matches the position of the annular drainage groove 2 provided in the tunnel, wherein the upper anchoring edge 3.3.1 is tightly anchored to the tunnel wall by bolts, and the lower anchoring edge 3.3.2 is suspended and anchored to the water inlet end of the lower longitudinal drainage structure 3.2 by bolts, so as to leave a drainage gap, so that the water sprayed from the radial drainage hole (1) first flushes the L-shaped water retaining plate 3.3, and then flows into the lower longitudinal drainage structure 3.2 through the drainage gap from the inward-inclined drainage cover plate 8 and is collected in the lower longitudinal drainage structure 3.2.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of confidentiality restriction on the present invention. Any simple modification, equivalent change and modification of the above embodiment made based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A new type of diversion structure suitable for centralized water discharge treatment on tunnel side walls, characterized by: The invention comprises a radial drainage hole (1) provided at the arch foot position of the side wall of the water accumulation section behind the tunnel lining, a steel pipe with drainage holes provided in the radial drainage hole (1), a stepped longitudinal drainage structure (3) provided at the water outlet end of the steel pipe, and a pressure relief wheel structure (4) provided in the longitudinal drainage structure near the water outlet end of the steel pipe.

2. The novel diversion structure suitable for centralized water discharge treatment on tunnel side walls according to claim 1 is characterized in that: According to the setting range of the radial drainage holes (1), an annular drainage groove (2) is also provided on the tunnel lining, and the setting range of the stepped longitudinal drainage structure (3) corresponds to the setting range of the annular drainage groove (2) and the radial drainage holes (1).

3. The novel diversion structure suitable for centralized water discharge treatment on tunnel side walls according to claim 1 or 2, characterized in that: The stepped longitudinal drainage structure (3) comprises at least two levels of upper longitudinal drainage structures (3.1) and lower longitudinal drainage structures (3.2) arranged from top to bottom along the water outlet of the steel flower pipe. The pressure relief wheel structure is arranged in the upper longitudinal drainage structure (3.1) and is opposite to the water outlet of the steel flower pipe. The water inlet of the lower longitudinal drainage structure (3.2) is connected to the upper longitudinal drainage structure (3.1), and the water outlet is connected to the transverse drainage ditch (5) and the central drainage ditch (6) of the tunnel.

4. The novel diversion structure suitable for centralized water discharge treatment on tunnel side walls according to claim 3 is characterized in that: An L-shaped water baffle (3.3) with an opening facing the water outlet end of the steel flower pipe is provided on the outside of the upper longitudinal drainage structure. The pressure relief wheel structure (4) includes a deceleration turntable (4.3) arranged in the L-shaped water baffle (3.3) and positioned relative to the water outlet end of the steel flower pipe. A connecting rod (4.2) is rotatably connected in the shaft hole of the deceleration turntable (4.3). Anchor plates (4.1) are symmetrically provided at both ends of the connecting rod (4.2). The anchor plates (4.1) are fixedly connected to the inner side of the L-shaped water baffle (3.3).

5. The novel diversion structure suitable for centralized water discharge treatment on tunnel side walls according to claim 4 is characterized in that: The L-shaped water retaining plate (3.3) is a stainless steel plate.

6. The novel diversion structure suitable for centralized water discharge treatment on tunnel side walls according to claim 5 is characterized in that: The upper and lower parts of the L-shaped water retaining plate (3.3) are respectively provided with an upper anchoring edge (3.3.1) and a lower anchoring edge (3.3.2), and a drainage groove interface (3.3.3) is arranged at a certain interval on the upper end of the upper anchoring edge (3.3.1). The setting position of the drainage groove interface (3.3.3) matches the position of the annular drainage groove (2) arranged in the tunnel. The upper anchoring edge (3.3.1) is tightly anchored to the tunnel wall by bolts, and the lower anchoring edge (3.3.2) is suspended anchored to the water inlet end of the lower longitudinal drainage structure by bolts so as to leave a drainage gap, so that the upper longitudinal drainage structure (3.1) is connected to the lower longitudinal drainage structure (3.2) through the drainage gap.

7. The novel diversion structure suitable for centralized water discharge treatment on tunnel side walls according to claim 3 is characterized in that: The lower longitudinal drainage structure (3.2) comprises a cable trench arranged along the lower drainage outlet range of the annular drainage trench (2), a trench bottom drainage trench (7) connected to the transverse drainage trench (5) being provided at the bottom of the cable trench, and an inward-inclined drainage cover plate (8) being provided at the top.

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