Longitudinal drainage ditch for side slope

Abstract

The utility model discloses a side slope longitudinal drainage ditch, which is applied to the field of side slope drainage ditches, and comprises two symmetrically arranged support walls, a plurality of first steps and a plurality of second steps, the two support walls extend to the bottom of a side slope from top to bottom, the multiple first steps and the multiple second steps are sequentially arranged between the two supporting walls in a staggered mode, first groove parts are arranged on the front walls of the first steps, second groove parts are arranged on the two sides of the front walls of the second steps respectively, and a protruding part is formed between the two second groove parts. During drainage, water flow sequentially passes through the first groove portion of the first step and the protruding portion of the second step, the flow direction of the water flow is continuously changed, the horizontal runoff distance is increased, the contact area is increased, water flow hedging and wall impacting energy dissipation are increased, the energy dissipation efficiency is greatly improved, and water flow top jumping is effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the field of slope drainage ditches, and particularly relates to a longitudinal drainage ditch for slopes. Background Technique

[0002] Under the background of the rapid development of urban construction in China, slope protection projects after mountain excavation can be seen everywhere. During slope protection, a drainage system including a platform transverse drainage ditch, a middle longitudinal drainage ditch, and a peripheral intercepting ditch needs to be arranged on the slope surface. The water flow in the longitudinal drainage ditch has its potential energy continuously converted into kinetic energy, and the flow velocity continuously increases, making it easy for the water flow to jump out of the groove at the lower part of the drainage ditch. Currently, for controlling the water flow velocity in the drainage ditch, there are two common solutions. One is to set the bottom of the drainage ditch into a stepped drop, such as the existing patent 2021224854945, a greening drainage walkway structure for a mine slope; the other is to set components such as a partition net at the bottom of the drainage ditch, such as the existing patent 2019217703958, a slope drainage structure. The former method generally has a low energy dissipation efficiency, and the latter method is prone to blockage. Content of the Utility Model

[0003] The purpose of the utility model is to provide a longitudinal drainage ditch for slopes, which has the advantages of a longitudinal drainage ditch with higher energy dissipation efficiency. The technical structure is simple, the construction is convenient, and it is not easy to be blocked, facilitating the cleaning by staff.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] A longitudinal drainage ditch for slopes includes two symmetrically arranged support walls, and the two support walls extend from top to bottom to the bottom of the slope, and the top is higher than the surface of the slope;

[0006] A number of first steps and a number of second steps are alternately arranged between the two support walls in sequence. The front wall of the first step is provided with a first groove portion, and both sides of the front wall of the second step are respectively provided with second groove portions. A convex portion is formed between the two second groove portions. When the water flow passes through the groove portion of the first step and the convex portion of the second step in sequence, the flow direction of the water flow changes continuously, increasing the horizontal runoff distance, increasing the contact area, increasing the water flow impact and collision with the wall for energy dissipation, etc., greatly improving the energy dissipation efficiency and effectively preventing the water flow from jumping over the top.

[0007] The utility model is further arranged such that the cross-sections of the first groove portion and the convex portion are both rectangular, the first groove portion and the convex portion are respectively located at the middle positions of the first step and the second step, and the first groove portion and the convex portion are arranged at intervals and alternately, continuously changing the flow direction of the water flow.

[0008] The present utility model is further configured such that the groove depth of the first groove portion is one-third of the depth of the first step, and the groove depths of the two second groove portions are one-third of the depth of the second step. When making the first step and the second step, the same template can be used for formwork pouring of the concave first step and the convex second step, which is simple in construction.

[0009] The present utility model is further configured such that ditches are provided at the bottoms of the two support walls. A water flow slope is inclinedly opened at the top of one side of the ditch close to the support wall, and a grating plate is provided at the top of the water flow slope. Water flows into the ditch through the water flow slope, and impurities mixed in the water are blocked on the grating plate to prevent the ditch from being blocked.

[0010] The present utility model is further configured such that the side of the grating plate close to the ditch is inclined upward. Since water flows into the water flow slope through the grating plate, the impurities in the water are blocked on the grating plate by the resistance of the inclined upward grating plate.

[0011] The present utility model is further configured such that a filter screen is horizontally arranged in the first groove portion. The water flow on the first step converges into the first groove portion with impurities, and the impurities are blocked on the filter screen, which is convenient for centralized cleaning.

[0012] In summary, the present utility model has the following beneficial effects:

[0013] In the use of the longitudinal drainage ditch on the slope of the present utility model, when constructing the first step and the second step, the vertical straight formwork can be changed to a concave formwork for formwork pouring, which is simple in construction. During drainage, when the water flow passes through the first groove portion of the first step and the protruding portion of the second step, the flow direction of the water flow is continuously changed, increasing the horizontal runoff distance, increasing the contact area, increasing the water flow impact and wall collision energy dissipation, etc., greatly improving the energy dissipation efficiency and effectively preventing the water flow from jumping over the top. In addition, there is no need to additionally arrange a flow blocking member in the longitudinal drainage ditch groove, and the existing stepped drop structure can be directly transformed to form a longitudinal drainage ditch with higher energy dissipation efficiency, which has a simple structure, convenient construction and strong operability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is a flow direction diagram of water flow passing through the first step and the second step;

[0016] Figure 3 is a schematic structural view of Embodiment 2;

[0017] Figure 4 is a cross-sectional view of the water flow slope;

[0018] Figure 5It is a schematic structural diagram of Embodiment 3.

[0019] Reference numerals: 1, support wall; 2, first step; 21, first groove portion; 3, second step; 31, second groove portion; 32, protrusion; 4, ditch; 5, drainage ditch; 6, grille plate; 61, drain hole; 7, filter screen. Detailed implementation manners

[0020] The following further elaborates on the present utility model in conjunction with the attached drawings.

[0021] Embodiment 1:

[0022] Reference Figure 1 and 2 , a longitudinal drainage ditch for a slope, comprising two symmetrically arranged support walls 1, a plurality of first steps 2 and a plurality of second steps 3.

[0023] The two support walls 1 extend from top to bottom to the bottom of the slope, and the upper side edges of the support walls 1 are higher than the surface of the slope.

[0024] A plurality of the first steps 2 and a plurality of the second steps 3 are alternately arranged in sequence between the two support walls 1. The front wall of the first step 2 is provided with a first groove portion 21, and both sides of the front wall of the second step 3 are respectively provided with second groove portions 31. A protrusion 32 is formed between the two second groove portions 31.

[0025] During drainage, water flows through the first groove portion 21 of the first step 2. Most of the water on the first step 1 flows in from around the first groove portion 21, increasing the water flow impact. When the water flows through the protrusion 32 of the second step 3, most of the water on the second step 3 flows around the protrusion 32 in all directions, increasing the horizontal runoff distance. Since the first step 2 and the second step 3 are alternately arranged in sequence, the flow direction of the water is continuously changed, increasing the contact area between the water flow and the first step 2 and the second step 3, greatly improving the energy dissipation efficiency, and effectively preventing the water flow from jumping over the top.

[0026] In this embodiment, the cross-sections of the first groove portion 21 and the protrusion 32 are both rectangular. The groove depth of the first groove portion 21 is one-third of the depth of the first step 2, and the groove depths of the two second groove portions 31 are one-third of the depth of the second step 3.

[0027] During construction, the vertical flat formwork can be changed to an inwardly concave formwork for formwork support and pouring. When pouring the first step 2, the inwardly concave formwork faces the inside of the step. When pouring the second step 3, the inwardly concave formwork faces the outside of the step, which is convenient for construction.

[0028] Preferably, the first groove portion 21 and the protrusion portion 32 are respectively located at the middle positions of the first step 2 and the second step 3. The first groove portion 21 located in the middle can collect most of the water on the first step 2 into the first groove portion 21, and the protrusion portion 32 located in the middle can disperse the water flowing down from the first groove portion 21. The first groove portion 21 and the protrusion portion 32 correspond to each other up and down, improving the energy dissipation effect.

[0029] In addition, there is no need to additionally arrange a flow blocking member in the longitudinal drainage ditch groove, and the existing stepped drop structure can be directly transformed to form a longitudinal drainage ditch with higher energy dissipation efficiency. The structure is simple, the construction is convenient, and the operability is strong.

[0030] Embodiment 2:

[0031] Reference Figure 3 and 4 A ditch 4 is provided at the bottom of the two support walls 1. A flowing water slope 5 is obliquely opened at the top of the side of the ditch 4 close to the support wall 1. A grille plate 6 is provided at the top of the flowing water slope 5. A plurality of strip-shaped drainage holes 61 are arranged in parallel on the grille plate 6, and the drainage holes 61 are arranged perpendicular to the direction of the ditch.

[0032] The water flow passes through the first step 2 and the second step 3, and finally flows into the ditch 4 through the flowing water slope 5. The impurities in the water flow are blocked on the grille plate 6. Since the drainage holes 61 are strip-shaped, it is convenient for the water flow to smoothly enter the flowing water slope 5.

[0033] In this embodiment, the side of the grille plate 6 close to the ditch 4 is inclined upward. The water flow has a certain impact force. The inclined upward grille plate 6 can play a certain resistance role to slow down the water flow, and then the impurities are blocked on the grille plate 6 and will not rush into the ditch 4, avoiding the blockage of the ditch 4.

[0034] Embodiment 3:

[0035] Reference Figure 5 Protruding blocks are provided on the inner walls of three sides of the first groove portion 21, and a filter net 7 is placed on the three protruding blocks. Since most of the water on the first step 2 flows into the first groove portion 21, the filter net 7 can filter most of the impurities. Only need to clean the filter net 7 regularly by personnel, and the impurities flowing into the ditch 4 can be reduced.

[0036] Preferably, the filter net 7 is arranged at the middle position of the first groove portion 21, so that a certain amount of impurities can be accumulated on the filter net 7, and at the same time, it does not affect the normal passage of the water flow.

Claims

1. A longitudinal drainage ditch on a slope, characterized by: It comprises two symmetrically arranged support walls (1), the two support walls (1) extending from top to bottom to the bottom of the slope, and the tops of the two support walls (1) are higher than the surface of the slope; A plurality of first steps (2) and a plurality of second steps (3), wherein the plurality of first steps (2) and the plurality of second steps (3) are arranged alternately in sequence between two supporting walls (1), a first groove portion (21) is provided on the front wall of the first step (2), and second groove portions (31) are respectively provided on both sides of the front wall of the second step (3), and a protrusion (32) is formed between the two second groove portions (31).

2. A longitudinal drainage ditch on a slope according to claim 1, characterized in that: The cross sections of the first groove portion (21) and the protrusion portion (32) are both rectangular.

3. The longitudinal drainage ditch on the slope according to claim 1, characterized in that: The first groove portion (21) and the protrusion portion (32) are respectively located in the middle of the first step (2) and the second step (3).

4. A longitudinal drainage ditch on a slope according to claim 1, characterized in that: The groove depth of the first groove portion (21) is one third of the depth of the first step (2), and the groove depths of the two second groove portions (31) are one third of the depth of the second step (3).

5. The longitudinal drainage ditch on the slope according to claim 1, characterized in that: A ditch (4) is provided at the bottom of the two supporting walls (1), a water flow slope (5) is inclined at the top of one side of the ditch (4) close to the supporting wall (1), and a grille plate (6) is provided at the top of the water flow slope (5).

6. A longitudinal drainage ditch on a slope according to claim 5, characterized in that: The grid plate (6) is arranged inclined upward on a side close to the ditch (4).

7. A longitudinal drainage ditch on a slope according to claim 6, characterized in that: A filter screen (7) is horizontally arranged in the first groove portion (21).

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