Small high and steep gully slag blocking structure and construction method

Abstract

The invention relates to a small high and steep gully slag blocking structure and a construction method.The small high and steep gully slag blocking structure comprises a rock ballast blocking structure and a drainage assembly, the rock ballast blocking structure is transversely arranged at the position of a gully opening where a natural gully and an artificial slope intersect, and the rock ballast blocking structure is located on the upstream side of a building; the rock ballast blocking structure comprises a concrete retaining wall and a passive protective net, a plurality of drainage holes are formed in the wall face of the concrete retaining wall in a penetrating mode, a plurality of anchor bars are arranged between the concrete retaining wall and the foundation, the passive protective net is fixedly arranged at the top of the concrete retaining wall, and at least one side, in the length direction, of the passive protective net is connected with a mountain through the anchor bars. The drainage assembly is located on the downstream side of the rock ballast blocking structure and can converge and drain water on the downstream side of the rock ballast blocking structure. The small high and steep gully slag blocking structure can improve the safety of buildings at the downstream of the gully, the facility structure is relatively simple, and operation and maintenance are facilitated.

Description

Technical Field

[0001] The present application relates to a slope protection project, and in particular to a small-scale high-steep gully slag retaining structure and a construction method. Background Art

[0002] In infrastructure construction projects, it is common to encounter gullies above one side of a building. The collected water flow formed by such gullies during rainy days will impact downstream buildings. When there are deposits in the gully, the collected water flow will also carry the mud and rocks accumulated in the gully, and the impact and destructive power will be stronger. Especially for road projects where vehicles and pedestrians often pass through, the harm is greater. In this case, it is necessary to build water retaining and slag blocking facilities to prevent the collected water flow or mud and rock flow from impacting the lowered buildings. However, when such gullies are small and steep, the excavation of the building foundation can easily cause the entire gully and the exit to be located above the building. After the water flow or rolling rocks above reach the gully mouth, they will not fall along the slope under the action of inertia, but will fly over. In this case, the effect of building blocking measures along the edge of the building is relatively poor, or the structure of such blocking must be of a high height to be effective. Summary of the invention

[0003] A first aspect of an embodiment of the present application provides a small-sized high-steep gully slag retaining structure, which can improve the safety of buildings downstream of the gully, has a relatively simple facility structure, and is easy to operate and maintain.

[0004] The small-scale high-steep gully slag retaining structure provided in the first aspect of the embodiment of the present application comprises: a slag retaining structure, the slag retaining structure is transversely arranged at the gully mouth where the natural gully and the artificial slope meet, and the slag retaining structure is located on the upstream side of the building, the slag retaining structure comprises a concrete retaining wall and a passive protection net, a plurality of drainage holes are opened through the wall surface of the concrete retaining wall, a plurality of anchor bars are arranged between the concrete retaining wall and the foundation, the passive protection net is fixedly arranged on the top of the concrete retaining wall, and at least one side of the passive protection net along the length direction is connected to the mountain through the anchor bars;

[0005] A drainage component is located at the downstream side of the slag retaining structure, and the drainage component can converge and discharge the water on the downstream side of the slag retaining structure.

[0006] In addition, the small high-steep gully slag blocking structure provided in the embodiment of the present application may also have the following additional technical features:

[0007] In an optional scheme, the drainage component has a first drainage path extending along the width direction of the natural gully; the drainage component includes a drainage steel pipe, a sump and a drainage ditch; the length direction of the drainage steel pipe extends at least partially along the length direction of the natural gully, a baffle is provided at the inlet end of the drainage steel pipe, the outlet end of the drainage steel pipe is connected to the sump, the drainage ditch is provided on both sides of the sump, and the length direction of the drainage ditch extends along the width direction of the natural gully and forms the first drainage path.

[0008] In an optional scheme, the drainage component also has a second drainage path extending along the length direction of the natural gully; the drainage component includes a drainage culvert, which is located at the bottom of the building, and one end of the drainage culvert is connected to the sump, and the other end is located on the downstream side of the building, and the length direction of the drainage culvert extends along the length direction of the natural gully and forms the second drainage path.

[0009] In an optional scheme, the slag retaining structure also includes a steel mesh grille, and a reserved gap is provided through the wall surface of the concrete retaining wall, the reserved gap is located in the middle of the concrete retaining wall and close to the passive protection net, the steel mesh grille is movably connected to the concrete retaining wall and can open or cover the reserved gap; the opening position of the drainage hole is lower than the bottom of the reserved gap.

[0010] In an optional scheme, the height of the concrete retaining wall above the upstream terrain is not less than 2m, the cross-sectional shape of the concrete retaining wall is a right-angled trapezoid, and the top width of the concrete retaining wall is 0.5 to 1m, the length and depth of the reserved notch are not less than 1m, and the diameter of the drainage hole is not less than 10cm.

[0011] In an optional scheme, the concrete retaining wall is provided with a rotating shaft reserved hole and a latch reserved hole at the position of the reserved notch, and the steel mesh grille is movably connected to the concrete retaining wall via a rotating shaft arranged in the rotating shaft reserved hole. There are multiple latch reserved holes, and latches capable of limiting the steel mesh grille are arranged in the latch reserved holes.

[0012] In an optional solution, the slag retaining structure further includes a plurality of columns, the plurality of columns are arranged at intervals along the length direction of the concrete retaining wall, and part of the passive protection net is disposed between two adjacent columns.

[0013] A second aspect of the present application provides a construction method for a small-sized high-steep gully slag retaining structure, the construction method being used to construct the small-sized high-steep gully slag retaining structure in the first aspect of the present application, the construction method comprising the following steps:

[0014] 1) Excavation shall be carried out according to the structural design requirements, including the building foundation, drainage ditch foundation, sump foundation and drainage culvert foundation;

[0015] 2) At a location no less than 5m above the intersection of the natural gully bottom and the artificial slope, excavate the foundation and set up a concrete retaining wall, and anchor the foundation of the concrete retaining wall with anchor bars;

[0016] 3) Install the passive protection net. The passive protection net within the concrete retaining wall is anchored to the top of the retaining wall with rivets. Anchor bars are set at the connection parts with the mountain on both sides for anchoring. Zippers are set on the columns of the passive protection net to connect with the mountain.

[0017] 4) Process the grille, install it in the reserved notch of the concrete retaining wall, and set pins to fix it;

[0018] 5) Install the drainage steel pipe, anchor the drainage steel pipe on the slope with anchor piers, use steel plates to form a water retaining plate at the inlet of the drainage steel pipe, with the top higher than the drainage steel pipe and the bottom closed to the ground, set multiple dowels on the back side of the water retaining plate to improve its stability in resisting water pressure, and use concrete or mortar to fill and seal the gap at the bottom of the steel plate;

[0019] 6) Construct drainage culverts, buildings, drainage ditches and collection pits.

[0020] In an optional scheme, the step 2) also includes: pre-embedding columns of a passive protection net on the top of the concrete retaining wall, and connecting the passive protection net to the columns; reserving reserved gaps and drainage holes in the concrete retaining wall, and reserving rotating shaft reserved holes and pin reserved holes above and at the bottom of both sides of the reserved gap.

[0021] The beneficial effects of the embodiments of the present application are:

[0022] This small high-steep gully slag retaining structure is formed by the cooperation of concrete retaining walls and passive protection nets, and is set above the artificial slope to increase the retaining effect. At the same time, the concrete retaining wall is used to block the bottom slag pile with the largest earth pressure. The concrete retaining wall is provided with reserved gaps and drainage holes, which can not only drain water, but also use the reserved gaps to facilitate manual turning during cleaning.

[0023] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the plan layout of a small high-steep gully slag retaining structure provided for this application;

[0025] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of a small high-steep gully slag retaining structure;

[0026] Figure 3 The overall structural diagram of the slag retaining structure provided for this application;

[0027] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the slag retaining structure;

[0028] Figure 5 Schematic diagram of the installation structure of the steel mesh grille provided for this application.

[0029] Figure numerals: slag retaining structure 1, concrete retaining wall 10, passive protection net 11, drainage hole 12, anchor bar 13, steel mesh grille 14, reserved gap 15, rotating shaft reserved hole 16, latch reserved hole 17, rotating shaft 18, latch 19, column 110, natural gully 2, artificial slope 3, building 4, drainage component 5, drainage steel pipe 51, sump 52, drainage ditch 53, baffle 54, drainage culvert 55.

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0031] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0032] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0034] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0035] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0036] like Figure 1-5 As shown, the first aspect of the embodiment of the present application provides a small-sized high-steep gully slag blocking structure, which includes a slag blocking structure 1 and a drainage component 5. The slag blocking structure 1 is transversely arranged at the gully mouth where the natural gully 2 and the artificial slope 3 meet, and the slag blocking structure 1 is located on the upstream side of the building 4. The slag blocking structure 1 includes a concrete retaining wall 10 and a passive protection net 11. The wall surface of the concrete retaining wall 10 is penetrated with a plurality of drainage holes 12, and a plurality of anchor bars 13 are arranged between the concrete retaining wall 10 and the foundation, which can enhance its overall stability and impact resistance. The passive protection net 11 is fixedly arranged on the top of the concrete retaining wall 10, and at least one side of the passive protection net 11 along the length direction is connected to the mountain through the anchor bars 13. The passive protection net 11 and the retaining wall together form a gully slag blocking and drainage structure. The drainage component 5 is located on the downstream side of the slag blocking structure 1, and the drainage component 5 can converge and discharge the water on the downstream side of the slag blocking structure 1.

[0037] It should be noted that although the water volume of small high and steep gullies is not large, the water flow rate is fast, and the stones carried are very easy to roll and jump on the slope, which increases the difficulty of blocking. If an ordinary protective net is used for protection, the slag will soon accumulate in the protective net, thereby destroying the protective net. Therefore, the small high and steep gully slag blocking structure in this embodiment forms a protective structure by the cooperation of the concrete retaining wall 10 and the passive protective net 11, and it is set above the artificial slope 3, so as to increase the blocking effect. At the same time, the concrete retaining wall 10 is used to block the bottom slag pile with the largest soil pressure. The concrete retaining wall 10 is provided with drainage holes 12, which can facilitate drainage.

[0038] like Figure 1-2 As shown, in a specific embodiment, the drainage component 5 has a first drainage path extending along the width direction of the natural gully 2; the drainage component 5 includes a drainage steel pipe 51, a sump 52 and a drainage ditch 53; the length direction of the drainage steel pipe 51 at least partially extends along the length direction of the natural gully 2, a baffle 54 is provided at the inlet end of the drainage steel pipe 51, the outlet end of the drainage steel pipe 51 is connected to the sump 52, the drainage ditch 53 is provided on both sides of the sump 52, and the length direction of the drainage ditch 53 extends along the width direction of the natural gully 2 and forms a first drainage path.

[0039] Specifically, in this embodiment, the inlet of the drainage steel pipe 51 is located below the concrete retaining wall 10, maintaining a spacing of about 2m, and a baffle 54 is formed at the inlet with a steel plate, the top of which is higher than the top of the drainage steel pipe 51 and the bottom is closed to the ground. Some dowels are arranged on the back side of the baffle 54 to improve its stability against water pressure, and the gap at the bottom of the steel plate is filled and closed with concrete or mortar. The function of the baffle 54 is to collect the water that passes through the concrete retaining wall 10 and discharge it from the drainage steel pipe 51 to the sump 52 below to avoid water splashing.

[0040] like Figure 1-2 As shown, in a specific embodiment, the drainage component 5 also has a second drainage path extending along the length direction of the natural gully 2; the drainage component 5 includes a drainage culvert 55, the drainage culvert 55 is located at the bottom of the building 4, and one end of the drainage culvert 55 is connected to the sump 52, and the other end is located on the downstream side of the building 4. The length direction of the drainage culvert 55 extends along the length direction of the natural gully 2 and forms a second drainage path. The water body downstream of the slag retaining structure 1 can be quickly and effectively drained through the first drainage path and the second drainage path. Generally speaking, when the building 4 is a road, a drainage culvert 55 can be set, and when it is other buildings 4, the setting of the drainage culvert 55 can be cancelled.

[0041] like Figure 3-5 As shown, in a specific embodiment, the slag retaining structure 1 further includes a steel mesh grille 14, a reserved gap 15 is provided through the wall surface of the concrete retaining wall 10, the reserved gap 15 is located in the middle of the concrete retaining wall 10 and close to the passive protection net 11, the steel mesh grille 14 is movably connected to the concrete retaining wall 10 and can open or cover the reserved gap 15; the opening position of the drainage hole 12 is lower than the bottom of the reserved gap 15. Generally speaking, the height of the concrete retaining wall 10 above the upstream terrain is not less than 2m, the cross-sectional shape of the concrete retaining wall 10 is a right-angled trapezoid, and the top width of the concrete retaining wall 10 is 0.5 to 1m, the length and depth of the reserved gap 15 are not less than 1m, and the diameter of the drainage hole 12 is not less than 10cm. In addition, the slag retaining structure 1 further includes a plurality of columns 110, the plurality of columns 110 are arranged at intervals along the length direction of the concrete retaining wall 10, and part of the passive protection net 11 is arranged between two adjacent columns 110.

[0042] like Figure 4-5As shown, in a specific embodiment, the concrete retaining wall 10 is provided with a rotating shaft reserved hole 16 and a latch 19 reserved hole 17 at the position of the reserved notch 15, and the steel mesh grille 14 is movably connected to the concrete retaining wall 10 through a rotating shaft 18 arranged in the rotating shaft reserved hole 16, and the number of the latch 19 reserved holes 17 is multiple, and the latch 19 reserved holes 17 are provided with latches 19 capable of limiting the steel mesh grille 14.

[0043] Specifically, the steel mesh grille 14 can be turned upward at the position of the reserved notch 15. The steel mesh grille 14 is made of welded steel and steel bars, and the spacing of the grille steel bars is 5 cm. A horizontally rotatable shaft 18 is set at the upper end of the steel mesh grille 14, which is inserted into the reserved holes in the concrete on both sides to achieve rotation, and one or more pins 19 are set at the bottom for fixing. After running for a period of time, the pin 19 can be pulled out, the slag body can be manually cleaned through the reserved notch 15, and the slag body can be directly slid into the sump 52 through the drainage steel pipe 51 channel for cleaning and transportation. Larger stones are decomposed to facilitate slag sliding.

[0044] A second aspect of the present application provides a construction method for a small-sized high-steep gully slag retaining structure. The construction method is used to construct the small-sized high-steep gully slag retaining structure in the first aspect of the present application. The construction method comprises the following steps:

[0045] 1) Excavation is carried out according to the structural design requirements, including the foundation of the building 4, the foundation of the drainage ditch 53, the foundation of the sump 52 and the foundation of the drainage culvert 55;

[0046] 2) At a position not less than 5m above the intersection of the bottom of the natural gully 2 and the artificial slope 3, a foundation is excavated to set up a concrete retaining wall 10, and the foundation of the concrete retaining wall 10 is anchored by anchor bars 13; a column 110 of a passive protection net 11 is pre-buried on the top of the concrete retaining wall 10, a reserved gap 15 and a drainage hole 12 are reserved on the concrete retaining wall 10, and a rotation shaft reserved hole 16 and a latch 19 reserved hole 17 are reserved above and at the bottom of both sides of the reserved gap 15;

[0047] 3) Install the passive protection net 11. The passive protection net 11 within the concrete retaining wall 10 is anchored to the top of the retaining wall with rivets, and anchor bars 13 are arranged at the connection parts with the mountain on both sides for anchoring. The columns 110 of the passive protection net 11 are provided with zippers to connect with the mountain;

[0048] 4) Processing the grille, installing it in the reserved notch 15 of the concrete retaining wall 10, and setting the latch 19 for fixing;

[0049] 5) Install the drainage steel pipe 51, anchor the drainage steel pipe 51 on the slope with anchor piers, use steel plates to form a water retaining plate at the inlet of the drainage steel pipe 51, the top of which is higher than the drainage steel pipe 51 and the bottom is closed to the ground, and arrange multiple dowels on the back side of the water retaining plate to improve its stability in resisting water pressure, and fill and seal the gap at the bottom of the steel plate with concrete or mortar;

[0050] 6) Construct drainage culverts, buildings 4, drainage ditches 53 and sump 52.

[0051] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications 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 small high-steep gully slag blocking structure, characterized in that: include: A slag retaining structure, wherein the slag retaining structure is transversely arranged at the gully mouth where the natural gully and the artificial slope meet, and the slag retaining structure is located on the upstream side of the building, and the slag retaining structure comprises a concrete retaining wall and a passive protection net, wherein a plurality of drainage holes are provided through the wall surface of the concrete retaining wall, a plurality of anchor bars are provided between the concrete retaining wall and the foundation, and the passive protection net is fixedly arranged on the top of the concrete retaining wall, and at least one side of the passive protection net along the length direction is connected to the mountain through anchor bars; A drainage component is located at the downstream side of the slag retaining structure, and the drainage component can converge and discharge the water on the downstream side of the slag retaining structure.

2. The small high-steep gully slag retaining structure according to claim 1 is characterized in that: The drainage component has a first drainage path extending along the width direction of the natural gully; the drainage component includes a drainage steel pipe, a sump and a drainage ditch; the length direction of the drainage steel pipe at least partially extends along the length direction of the natural gully, a baffle is provided at the inlet end of the drainage steel pipe, the outlet end of the drainage steel pipe is connected to the sump, the drainage ditch is provided on both sides of the sump, and the length direction of the drainage ditch extends along the width direction of the natural gully and forms the first drainage path.

3. The small high-steep gully slag blocking structure according to claim 2 is characterized in that: The drainage component also has a second drainage path extending along the length direction of the natural gully; the drainage component includes a drainage culvert, which is located at the bottom of the building, and one end of the drainage culvert is connected to the sump, and the other end is located on the downstream side of the building. The length direction of the drainage culvert extends along the length direction of the natural gully and forms the second drainage path.

4. The small-sized high-steep gully slag retaining structure according to any one of claims 1 to 3, characterized in that: The slag retaining structure also includes a steel mesh grille, and a reserved gap is set through the wall surface of the concrete retaining wall. The reserved gap is located in the middle of the concrete retaining wall and close to the passive protection net. The steel mesh grille is movably connected to the concrete retaining wall and can open or cover the reserved gap; the opening position of the drainage hole is lower than the bottom of the reserved gap.

5. The small-sized high-steep gully slag retaining structure according to claim 4 is characterized in that: The height of the concrete retaining wall above the upstream terrain is not less than 2m, the cross-sectional shape of the concrete retaining wall is trapezoidal, and the top width of the concrete retaining wall is 0.5 to 1m, the length and depth of the reserved gap are not less than 1m, and the diameter of the drainage hole is not less than 10cm.

6. The small-sized high-steep gully slag retaining structure according to claim 4 is characterized in that: The concrete retaining wall is provided with a rotating shaft reserved hole and a latch reserved hole at the position of the reserved notch. The steel mesh grille is movably connected to the concrete retaining wall via a rotating shaft arranged in the rotating shaft reserved hole. There are multiple latch reserved holes, and latches capable of limiting the steel mesh grille are arranged in the latch reserved holes.

7. The small-sized high-steep gully slag retaining structure according to any one of claims 1-3 or 5-6, characterized in that: The slag retaining structure further comprises a plurality of columns, wherein the plurality of columns are arranged at intervals along the length direction of the concrete retaining wall, and part of the passive protection net is arranged between two adjacent columns.

8. A construction method for a small high-steep gully slag retaining structure, characterized in that: The construction method is used to construct the small-scale high-steep gully slag retaining structure described in any one of claims 1 to 7, and the construction method comprises the following steps: 1) Excavation shall be carried out according to the structural design requirements, including the building foundation, drainage ditch foundation, sump foundation and drainage culvert foundation; 2) At a location no less than 5m above the intersection of the natural gully bottom and the artificial slope, excavate the foundation and set up a concrete retaining wall, and anchor the foundation of the concrete retaining wall with anchor bars; 3) Install the passive protection net. The passive protection net within the concrete retaining wall is anchored to the top of the retaining wall with rivets. Anchor bars are set at the connection parts with the mountain on both sides for anchoring. Zippers are set on the columns of the passive protection net to connect with the mountain. 4) Process the grille, install it in the reserved notch of the concrete retaining wall, and set pins to fix it; 5) Install the drainage steel pipe, anchor the drainage steel pipe on the slope with anchor piers, use steel plates to form a water retaining plate at the inlet of the drainage steel pipe, with the top higher than the drainage steel pipe and the bottom closed to the ground, set multiple dowels on the back side of the water retaining plate to improve its stability in resisting water pressure, and use concrete or mortar to fill and seal the gap at the bottom of the steel plate; 6) Construct drainage culverts, buildings, drainage ditches and collection pits.

9. The construction method of a small high-steep gully slag retaining structure according to claim 8, characterized in that: The step 2) also includes: pre-embedding columns of the passive protection net on the top of the concrete retaining wall, and connecting the passive protection net to the columns; reserving reserved gaps and drainage holes in the concrete retaining wall, and reserving rotating shaft reserved holes and latch reserved holes above and at the bottom of both sides of the reserved gap.

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