Dredging and water intercepting device for closed conduit and construction method

Abstract

The invention discloses a dredging and water intercepting device for a closed conduit. The device comprises a cuboid steel sheet pile and special-shaped air bags at the two ends of the steel sheet pile. The steel sheet pile is arranged in the section of the closed conduit and comprises a closing plate on the side periphery of an upstream face, main keels which are arranged in the pile and support the closing plate and are transversely and longitudinally interwoven, and auxiliary keels which are perpendicular to the upstream face and are evenly distributed. The closing plate is divided into an upper part and a lower part, and the upper closing plate is thicker than the lower closing plate; traction steel wire ropes are arranged on two sides of the upper part of the steel sheet pile; a deformation detection device is arranged at the main keel on the upstream face side; the special-shaped air bag is arranged in a gap between the closed conduit and the steel sheet pile, and the longitudinal width of the special-shaped air bag is set according to the size of the gap. On the premise that the construction progress and the safety of dredging of the closed conduit are not affected, rapid water interception is facilitated, and water in the closed conduit is emptied.

Description

Technical Field

[0001] The invention relates to the technical field of culvert dredging, and in particular to a culvert dredging and water interception device and a construction method. Background Art

[0002] After years of use, silt accumulation in urban culverts affects their normal use and requires dredging. Since urban areas are usually located in plain areas, there are many construction obstacles around them, the working surface is small, and the urban areas have strict environmental protection requirements. The water in the culverts is sewage. Although the traditional earth cofferdam construction technology is mature, it is not suitable for use. The cross-section of the culvert is mostly trapezoidal. In order to quickly drain the water inside the culvert, the existing water interception devices and construction methods cannot be implemented quickly.

[0003] The invention patent application with publication number CN 118958338 A discloses a steel sheet pile cofferdam and construction method for circulating pumping and desilting of thick overburden. This technical solution is suitable for the construction of steel sheet pile cofferdams in seepage areas, but not for the construction of culvert cofferdams in plain urban areas.

[0004] The cross-section of the culvert is mostly trapezoidal. How to quickly drain the water inside the culvert and develop a device and construction method for dredging and intercepting water in the culvert is a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of the above-mentioned defects in the prior art, the present invention provides a device and construction method for dredging and intercepting water in a culvert, which helps to quickly intercept water and drain the water inside the culvert quickly without affecting the construction progress and safety of dredging the culvert.

[0006] To achieve the above-mentioned object, in a first aspect, the present invention provides a device for desilting and intercepting water in a culvert, comprising a rectangular steel sheet pile and special-shaped air bags at both ends thereof;

[0007] The steel sheet pile is arranged in the cross section of the culvert, including a closing plate on the side of the water-facing surface, a main keel in the pile that supports the closing plate and is interlaced horizontally and vertically, and a secondary keel that is evenly arranged perpendicular to the water-facing surface; the closing plate is divided into two parts, the thickness of the upper closing plate is greater than that of the lower closing plate; and steel wire ropes for pulling are arranged on both sides of the upper part of the steel sheet pile;

[0008] A deformation detection device is provided at the main keel on the water-facing side;

[0009] The special-shaped airbag is arranged in the gap between the culvert and the steel sheet pile, and its longitudinal width is set according to the size of the gap.

[0010] The device of the present invention combines a steel sheet pile with a solid frame, a special-shaped airbag, and a deformation detection device. The special-shaped airbag is used to effectively fill the gap between the device and the ditch rough stone wall. The deformation detection device set at the main keel ensures the safety of dredging construction. The steel wire ropes on both sides of the upper part of the steel sheet pile can effectively prevent the device from tipping over after being fixed.

[0011] Furthermore, the closing plate is also provided with reinforcing angle steels in the longitudinal direction at the keel gaps, which can further increase the pressure load of the closing plate.

[0012] Furthermore, a pointed end is cut at the bottom of the main keel to facilitate smoother insertion of the steel sheet pile into the bottom of the culvert.

[0013] Furthermore, the upper part of the closing plate adopts 10 mm thick steel plate, and the lower part adopts 8 mm thick steel plate, the main keel adopts 200H steel, and the secondary keel adopts No. 14 channel steel.

[0014] In a second aspect, the present invention provides a construction method for dredging and water interception of a culvert, using a pair of dredging and water interception devices as described above, comprising the following steps:

[0015] S1. According to the structure and cross-sectional dimensions of the underground channel, the construction section is divided, the cover is opened, and the working well is set;

[0016] S2, hoisting and installing the above-mentioned culvert dredging and water interception device at both ends of the construction section; inserting the steel sheet piles into the silt in the culvert;

[0017] S3, the special-shaped airbags on both sides of the device are inflated to fill the gap between the steel sheet piles and the walls on both sides of the culvert to cut off water, and the steel sheet piles are fixed to the ground on both sides by steel wire ropes and ground nails;

[0018] S4, transport the sewage inside the underground channel construction section and implement deformation monitoring of the device at the same time;

[0019] S5. Under the premise that there is no alarm in deformation monitoring, carry out dredging of the culvert;

[0020] S6. After the dredging is completed, the special-shaped airbags are deflated and the ground nails are removed;

[0021] S7, dismantle the device and install it to the next construction section;

[0022] S8. Repeat S2 to S7 to complete the dredging of the entire culvert.

[0023] The construction method is easy and quick to operate, improves work efficiency, can save construction costs, and can be promoted and used in dredging of underground channels in other plain areas, with promising prospects.

[0024] Furthermore, the length of the construction section is 50 to 70 meters.

[0025] Compared with the prior art, the above invention has the following advantages or beneficial effects:

[0026] (1) The present invention is suitable for desilting and water interception construction of medium-sized culverts in urban areas, and is suitable for promotion and use in the complex environment around culverts in cities in plain areas;

[0027] (2) Compared with the existing water interception technology, the present invention is more convenient, the installation frame is simple to operate, can be reused, and can significantly save materials and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0029] Figure 1 It is a front view of a culvert desilting and water intercepting device in one embodiment of the present invention;

[0030] Figure 2 for Figure 1 Sectional view of the middle AA plane;

[0031] Figure 3 It is a top view of the structure of the underground channel desilting and water intercepting device in one embodiment of the present invention;

[0032] Figure 4 It is a cross-sectional view of the structure of the underground channel desilting and water interception device in one embodiment of the present invention.

[0033] Among them, 1. Steel sheet piles; 2. Culvert; 3. Steel wire rope; 4. Ground nails; 10. Closing plate; 11. Special-shaped airbag; 12. Main keel; 13. Secondary keel; 14. Reinforcement angle steel; 15. Deformation detection device; 16. Tip. DETAILED DESCRIPTION

[0034] The structure of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0035] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting" and "installation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the method can be welding, threaded connection or binding connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] The standard components used therein (such as deformation detection devices) can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each component adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0037] Example

[0038] See also Figure 1 and 2 , this embodiment provides a device for desilting and intercepting water in a culvert, comprising a rectangular steel sheet pile 1 and special-shaped air bags 11 at both ends thereof;

[0039] The steel sheet pile 1 is arranged in the cross section of the culvert 2, and includes a closing plate 10 on the side of the water-facing surface, a main keel 12 supporting the closing plate 10 in the pile and interlaced horizontally and vertically, and a secondary keel 13 evenly arranged perpendicular to the water-facing surface; the closing plate 10 is divided into an upper and lower part, and the thickness of the upper closing plate is greater than that of the lower closing plate; a pulling wire rope 3 is arranged on both sides of the upper part of the steel sheet pile 1;

[0040] A deformation detection device 15 is provided at the main keel 12 on the water-facing side;

[0041] The special-shaped airbag 11 is arranged in the gap between the culvert 2 and the steel sheet pile 1, and its longitudinal width is set according to the size of the gap.

[0042] The device of the present invention combines a steel sheet pile with a solid frame, a special-shaped airbag, and a deformation detection device. The special-shaped airbag is used to effectively fill the gap between the device and the ditch rough stone wall. The deformation detection device set at the main keel ensures the safety of dredging construction. The steel wire ropes on both sides of the upper part of the steel sheet pile can effectively prevent the device from tipping over after being fixed.

[0043] As a preferred embodiment, further: a tip 16 is cut out at the bottom of the main keel 12 to facilitate smoother insertion of the steel sheet pile into the bottom of the culvert.

[0044] The following is an example of a road culvert desilting project in a plain city to illustrate the design and construction steps of the above device. The culvert is 2.5 kilometers long, 10 meters wide, and 2.5 to 3 meters deep. There are green belts and roads above the culvert, and shops and residential buildings on both sides, so the construction space is small.

[0045] The designed water-cutting device is 9m long, 0.9m wide and 4.0m high. The upper part uses a 10mm thick steel plate and the lower part uses an 8mm thick steel plate as a closing plate 10 for closing on all sides. The main keel of the device uses 200H steel and the secondary keel uses No. 14 channel steel. The closing plate 10 is also provided with reinforcing angle steel 14 in the keel gap along the longitudinal direction.

[0046] See also Figure 3 and 4 The construction process of the above-mentioned culvert dredging project includes the following steps:

[0047] S1. According to the structure and cross-sectional dimensions of the underground channel, the construction section is divided, the cover is opened, and the working well is set. The length of the construction section can be selected from 50 to 70 meters.

[0048] S2. The above-mentioned culvert desilting and water interception device is hoisted and installed at both ends of the construction section; specifically, the long sides of the steel sheet piles 1 are perpendicular to the walls on both sides of the culvert and inserted into the silt in the culvert.

[0049] S3, the special-shaped air bags 11 on both sides of the device are inflated to fill the gap between the steel sheet piles 1 and the walls on both sides of the culvert 2 to cut off water, and the steel sheet piles 1 are fixed to the ground on both sides by steel wire ropes 3 and ground nails 4 as an anti-dumping measure for the device.

[0050] S4. Transport the sewage inside the underground canal construction section and implement deformation monitoring of the device at the same time.

[0051] S5. Under the premise that there is no alarm in deformation monitoring, carry out dredging construction of the culvert.

[0052] S6. After the dredging is completed, the special-shaped airbag 11 is deflated and the ground nails 4 are removed.

[0053] S7. Remove the device and install it in the next construction section.

[0054] S8. Repeat S2 to S7 to complete the dredging of the entire culvert.

[0055] The construction method is easy and quick to operate, improves work efficiency, can save construction costs, and can be promoted and used in dredging of underground channels in other plain areas, with promising prospects.

[0056] In summary, the present application provides a device for desilting and intercepting water in a culvert, comprising a rectangular steel sheet pile and special-shaped airbags at both ends thereof; the steel sheet pile is arranged in the cross section of the culvert, comprising a closing plate around the side of the water-facing surface, a main keel in the pile that supports the closing plate and is interlaced horizontally and vertically, and a secondary keel that is evenly arranged perpendicular to the water-facing surface; the closing plate is divided into an upper and lower part, and the thickness of the upper closing plate is greater than that of the lower closing plate; steel wire ropes for pulling are arranged on both sides of the upper part of the steel sheet pile; a deformation detection device is arranged at the main keel on the water-facing side; the special-shaped airbag is arranged in the gap between the culvert and the steel sheet pile, and its longitudinal width is set according to the size of the gap. The present invention helps to quickly intercept water and drain the water inside the culvert without affecting the construction progress and safety of culvert desilting.

[0057] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0058] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A device for desilting and intercepting water in a culvert, characterized by: It comprises a rectangular steel sheet pile (1) and special-shaped air bags (11) at both ends thereof; The steel sheet pile (1) is arranged in the cross section of the culvert (2), and comprises a closing plate (10) around the side, a main keel (12) supporting the closing plate (10) in the pile and interlaced horizontally and vertically, and a secondary keel (13) evenly arranged perpendicular to the water-facing surface; the closing plate (10) is divided into an upper and a lower part, and the thickness of the upper closing plate is greater than that of the lower closing plate; and steel wire ropes (3) for pulling are arranged on both sides of the upper part of the steel sheet pile (1); A deformation detection device (15) is provided at the main keel (12) on the water-facing side; The special-shaped airbag (11) is arranged in the gap between the culvert (2) and the steel sheet pile (1), and its longitudinal width is set according to the size of the gap.

2. The device for desilting and intercepting water from a culvert according to claim 1, characterized in that: The closing plate (10) is also provided with a reinforcing angle steel (14) in the longitudinal direction at the keel gap.

3. A device for desilting and intercepting water from a culvert according to claim 1 or 2, characterized in that: A tip (16) is cut at the bottom of the main keel (12).

4. A device for desilting and intercepting water from a culvert according to claim 1 or 2, characterized in that: The upper part of the closing plate (10) is made of a 10 mm thick steel plate, and the lower part is made of an 8 mm thick steel plate. The main keel (12) is made of 200H steel, and the secondary keel (13) is made of No. 14 channel steel.

5. A construction method for dredging and intercepting water in a culvert, characterized in that: A pair of devices for desilting and intercepting water from a culvert as claimed in any one of claims 1 to 4 is used, comprising the following steps: S1. According to the structure and cross-sectional dimensions of the underground channel, the construction section is divided, the cover is opened, and the working well is set; S2. The device for clearing silt and intercepting water from the culvert as claimed in any one of claims 1 to 4 is hoisted and installed at both ends of the construction section; the steel sheet piles (1) are inserted into the silt in the culvert; S3, the special-shaped air bags (11) on both sides of the device are inflated to fill the gap between the steel sheet pile (1) and the walls on both sides of the culvert (2) to intercept water, and the steel sheet pile (1) is fixed to the ground on both sides by steel wire ropes (3) and ground nails (4); S4, transport the sewage inside the underground channel construction section and implement deformation monitoring of the device at the same time; S5. Under the premise that there is no alarm in deformation monitoring, carry out dredging of the culvert; S6, after the dredging is completed, the special-shaped airbag (11) is deflated and the ground nails (4) are removed; S7, dismantle the device and install it to the next construction section; S8. Repeat S2 to S7 to complete the dredging of the entire culvert.

6. A construction method for dredging and intercepting water from a culvert according to claim 5, characterized in that: The length of the construction section is 50 to 70 meters.

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