Arrangement structure of inverted siphons crossing deep and narrow loess channel
By using inverted siphons to penetrate the anchor piers and pile foundation structures in the loess gullies, the problems of high construction difficulty and slope collapse were solved, ensuring construction safety and unobstructed flood passage, and reducing construction costs.
Patent Information
- Application Number
- CN202423179447.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing technologies present significant challenges in excavating trenches or constructing supporting structures in deep and narrow loess gullies, as they can easily lead to slope collapses and obstruct flood passage.
An inverted siphon pipe is used to penetrate the pier. The pile foundation at the bottom of the pier is located in the soil on both sides of the ditch and connected by an outer beam. A venting well and a venting pipe are set on the side of the pier. The venting pipe is connected to the stilling basin to avoid excavation and provide support.
It ensures construction safety, prevents slope collapse, ensures unobstructed flood passage, reduces construction costs, and is suitable for steep soil slopes.
Smart Images
Figure CN223535853U_ABST
Abstract
Description
Technical Field
[0001] This utility model patent relates to the field of water conservancy and hydropower engineering, specifically to an arrangement structure of an inverted siphon across a deep and narrow loess gully. Background Technology
[0002] Inverted siphons are pressurized water conveyance pipelines used in long-distance water conveyance projects, passing through valleys, rivers, depressions, roads, or other channels. Under the same terrain conditions, they are widely used due to their advantages such as less material usage, labor saving, low cost, safe and convenient construction, and no impact on river flood discharge. Inverted siphons are often laid in open-cut trenches or buried on the slopes on both sides. At the crossing points, they are often buried underground or used as cross-channels. Regardless of the method used, it is necessary to excavate either trenches or foundations for the cross-channel support structure on both sides and at the bottom of the ditch. However, for steep, deep, and narrow soil ditches, excavating trenches and foundations not only involves a large amount of excavation and is difficult to construct, but also easily leads to slope collapse, posing serious safety hazards. Crossing ditches with cross-channels requires pier-like support structures at the bottom of the ditch, which obstructs the flood discharge channel. Utility Model Content
[0003] (1) Technical problem to be solved: For soil gullies with steep slopes, deep and narrow gullies, the existing treatment methods are not only large in excavation and difficult to construct, but also very easy to cause slope collapse. Moreover, the supporting structure at the bottom of the gully also hinders the flood passage. This utility model provides an inverted siphon arrangement structure for crossing deep and narrow loess gullies to solve the above problems.
[0004] (2) The technical solution adopted by this utility model is as follows: an arrangement structure of an inverted siphon across a deep and narrow loess gully, characterized in that it includes an inverted siphon, and piers are set above the slopes on both sides near the bottom of the gully. Pile foundations are set at the bottom of the piers, and the lower ends of the pile foundations are located in the soil on both sides of the gully. The inverted siphon passes through the two piers, and an outer beam is set between the two piers. The inverted siphon is located inside the outer beam, and both ends of the inverted siphon obliquely penetrate the soil on the side of the gully.
[0005] A further technical solution is that the side of the pier is provided with an outer support body, which extends to the slope of the ditch.
[0006] A further technical solution is that a venting well is provided on the side of one of the piers, and a venting pipe is installed inside the venting well. One end of the venting pipe extends into the pier and connects to the inverted siphon pipe, and the other end of the venting pipe extends out of the venting well. A venting valve is connected to the venting pipe.
[0007] A further technical solution involves connecting the end of the vent pipe extending from the vent well to the stilling basin.
[0008] (3) Due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0009] 1. This utility model patent allows the inverted siphon pipe to directly penetrate the sloping section on the side of the ditch. It can be constructed using directional drilling, avoiding slope collapse caused by excavation, and is suitable for water supply and distribution pipes to pass through various steep soil slopes.
[0010] 2. In this elevated structure, the pile foundations are set on the two slopes of the ditch to support the piers, thus ensuring the flood passage to the maximum extent.
[0011] 3. The concrete outer beam in this overhead structure makes the horizontal section of the pipe a rigid connection, avoiding longitudinal temperature deformation and vertical self-weight deformation, which facilitates construction, reduces costs, and is suitable for overhead sections of small-diameter inverted siphon pipes spanning deep and narrow trenches. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0013] Figure 2 This is a schematic diagram of the structure of the venting well described in this utility model;
[0014] Figure 3 This is a schematic diagram of the structure of the top of the pier described in this utility model;
[0015] Figure 4 This is a top view of the overall structure of this utility model;
[0016] Figure 5 This is a schematic diagram of the connection between the vent pipe and the stilling basin described in this utility model. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0018] like Figures 1-5 As shown.
[0019] An inverted siphon arrangement structure spanning a deep and narrow loess gully includes an inverted siphon 1, with piers 2 set above the slopes on both sides near the bottom of the gully, and pile foundations 3 set at the bottom of the piers 2. The lower ends of the pile foundations 3 are located in the soil on both sides of the gully. The inverted siphon 1 passes through the two piers 2, and an outer beam 4 is set between the two piers 2. The inverted siphon 1 is located inside the outer beam 4, and both ends of the inverted siphon 1 obliquely penetrate the soil on the side of the gully.
[0020] In use, this utility model is mainly used to enable the inverted siphon 1 to cross deep and narrow soil gullies without earthwork excavation. Its main working principle is as follows: the sloping section of the inverted siphon 1 is connected from the top of the mountain to the bottom of the gully using directional drilling on both sides of the gully. The pile foundation 3 serves as a support, bearing the weight of the upper anchor 2 and the inverted siphon 1. Since the pile foundation 3 is basically on the slopes on both sides of the bottom of the gully and occupies little space, it does not affect the flood passage. The anchor 2 is used to connect the horizontal pipe of the inverted siphon 1 with the sloping section pipe, and at the same time serves as the foundation of the lower pile foundation 3. In use, the pile foundation 3 is poured first. Before pouring the anchor 2, the position of the horizontal pipe of the inverted siphon 1 is fixed first, then the anchor 2 is poured, then the outer beam 4 is poured, and then the sloping section pipe of the inverted siphon 1 is connected to the horizontal pipe.
[0021] An outer support 5 is provided on the side of the dam 2. The outer support 5 extends to the slope of the ditch and is finally cast in place to protect the inverted siphon pipe 1 from leakage.
[0022] One of the piers 2 has a venting well 6 on its side. The venting well 6 has a venting pipe 7 inside. One end of the venting pipe 7 extends into the pier 2 and connects to the inverted siphon pipe 1. The other end of the venting pipe 7 extends out of the venting well 6. A venting valve 8 is connected to the venting pipe 7. Before pouring the pier 2, the venting pipe 7 is connected to the bottom of the inverted siphon pipe 1. The venting well 6 and the pier 2 can be poured at the same time. Ladders are provided inside and outside the venting well 6. A venting pipe 10 is installed on the top of the venting well 6. Opening the venting valve 8 can vent the inverted siphon pipe 1.
[0023] One end of the vent pipe 7 extends out of the vent well 6 and connects to the stilling basin 9. The water discharged from the vent pipe 7 first falls into the stilling basin 9, is buffered, and then enters the channel to avoid scouring the channel.
[0024] The above are merely preferred embodiments of this utility model.
Claims
1. A structure for arranging inverted siphon pipes across deep and narrow loess gullies, characterized in that, The inverted siphon (1) is provided above the slopes on both sides near the bottom of the ditch. The bottom of the siphon (2) is provided with pile foundation (3). The lower end of the pile foundation (3) is located in the soil on both sides of the ditch. The inverted siphon (1) penetrates the two siphons (2). An outer beam (4) is provided between the two siphons (2). The inverted siphon (1) is located inside the outer beam (4). Both ends of the inverted siphon (1) penetrate the soil on the side of the ditch at an angle upward.
2. The arrangement structure of an inverted siphon across a deep and narrow loess gully according to claim 1, characterized in that, The side of the pier (2) is provided with an outer support body (5), which extends to the slope of the ditch.
3. The arrangement structure of an inverted siphon across a deep and narrow loess gully according to claim 1, characterized in that, One of the town piers (2) has a venting well (6) on its side. A venting pipe (7) is installed inside the venting well (6). One end of the venting pipe (7) extends into the town pier (2) and connects to the inverted siphon pipe (1). The other end of the venting pipe (7) extends out of the venting well (6). A venting valve (8) is connected to the venting pipe (7).
4. The arrangement structure of an inverted siphon across a deep and narrow loess gully according to claim 3, characterized in that, One end of the vent pipe (7) extending out of the vent well (6) is connected to the stilling basin (9).