Mountain photovoltaic power station box transformer substation foundation slope supporting structure

Abstract

According to the slope supporting structure for the box transformer substation foundation of the mountain photovoltaic power station, an integrated structure integrating supporting and backfilling functions is adopted, and a composite supporting system combining a multi-stage stepped soil retaining support and a deep anchoring system is constructed, so that the stability of the box transformer substation foundation is ensured, slippage deformation of a backfilled soil body is effectively restrained, and the stability of the box transformer substation foundation is improved. And the excavation work amount and the secondary reinforcement cost of the side slope are greatly reduced. Compared with the prior art, the slope supporting structure for the box transformer substation foundation of the mountain photovoltaic power station provides a reliable solution for standardized construction of slope supporting of the box transformer substation foundation of a mountain photovoltaic project, and the slope supporting structure is innovatively provided by combining a timber pile supporting system with the geotechnical bags, the geotechnical cloth and the geogrids; the requirement for backfilling of the box transformer substation is met, and meanwhile the effect of reinforcing the side slope of the box transformer substation is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic power plant box transformer foundation technical field more particularly, relate to a mountain photovoltaic power plant box transformer foundation slope support structure. BACKGROUND

[0002] In the mountain photovoltaic project construction, by the complex terrain limitation, the box transformer foundation often needs to form the local construction platform on the steep slope through the big excavation, but is subject to the poor high slope stability, the narrow operation surface and the limited backfilling space and other objective factors, direct backfilling easily leads to the insufficient compaction degree of backfilling soil body, the increased slope slip risk and so on, further causes the foundation displacement, the soil erosion and the slope collapse and other safety hidden dangers.

[0003] Therefore, it is necessary to provide a mountain photovoltaic power plant box transformer foundation slope support structure to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model provides a mountain photovoltaic power plant box transformer foundation slope support structure to solve the poor high slope stability of the existing mountain project box transformer foundation, and the conventional direct backfilling technical scheme easily leads to the insufficient compaction degree of backfilling soil body, the increased slope slip risk, even the problem of complete backfilling.

[0005] According to one aspect of the utility model, a mountain photovoltaic power plant box transformer foundation slope support structure is provided, which is arranged on a mountain slope where the box transformer foundation is placed. The slope support structure includes fixed piles and a compacted layer. Multiple rows of fixed piles are arranged at intervals in the slope direction of the slope, and a bearing platform is excavated at the bottom of the slope. The edge of the bearing platform is provided with a fixed pile. A baffle is arranged between adjacent fixed piles. The multiple layers of fixed piles and baffles divide the slope into multiple sections. A compacted layer is laid in each section. The compacted layer includes multiple layers of staggered laid geotextile bags. The bottom geotextile bag is pressed onto the geotextile cloth in the bearing platform and abuts against the baffle. The free end of the geotextile cloth is reversely wound onto the geotextile bag and is compressed by the upper layer of geotextile bags. The geotextile cloth is reversely wrapped on the upper layer of geotextile bags and is compressed by the upper layer of compacted layers.

[0006] On the basis of the above-mentioned scheme, the height of the fixed pile protruding from the slope is greater than the height of at least two layers of geotextile bags.

[0007] On the basis of the above-mentioned scheme, a geogrid is laid on the platform for bearing the box transformer foundation, and a backfilling soil layer is pressed onto the geogrid. The backfilling soil layer is filled between the surface of the slope and the compacted layer.

[0008] On the basis of the above-mentioned scheme, a tensioning rope is arranged between the fixed pile and the slope.

[0009] Preferably on the basis of the above scheme, one end of the tensioning rope is connected with the fixed pile, and the other end of the tensioning rope is fixed on the slope.

[0010] Preferably on the basis of the above scheme, the tensioning rope comprises a tensioning rope and an adjusting ring, the adjusting ring is in a waist shape and is provided with screw holes at two ends thereof, and one end of the tensioning rope is connected with a screw rod, and the screw rod is locked by a nut after being arranged in the screw hole.

[0011] Preferably on the basis of the above scheme, the fixed pile is arranged at the end of the platform close to the slope.

[0012] The utility model discloses a mountain photovoltaic power station box transformer foundation slope support structure, integrated support and backfill function's integrated structure, through the construction multistage ladder type earth retaining support and deep anchoring system combined composite support system, while ensuring the stability of box transformer foundation, effectively restricts backfill soil body slip deformation, and greatly reduces excavation engineering quantity and slope secondary reinforcement cost.

[0013] Compared with the prior art, the utility model discloses a mountain photovoltaic power station box transformer foundation slope support structure, which provides a reliable solution for the standardized construction of the box transformer foundation slope support of the mountain photovoltaic project. ACCURACY

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be needed to use the drawing of the embodiment to introduce briefly, obviously, the drawing in the following description only is some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0015] Figure 1 It is a structural schematic diagram of the mountain photovoltaic power station box transformer foundation slope support structure of the utility model;

[0016] Figure 2 It is a three-dimensional schematic diagram of the mountain photovoltaic power station box transformer foundation slope support structure of the utility model;

[0017] Figure 3 It is a side view of the mountain photovoltaic power station box transformer foundation slope support structure of the utility model;

[0018] Figure 4 It is an installation schematic enlarged view of the bearing table of the utility model;

[0019] Figure 5 It is a side partial view of the mountain photovoltaic power station box transformer foundation slope support structure of the utility model;

[0020] BRIEF DESCRIPTION OF DRAWINGS

[0021] 1, mountain; 2, box transformer substation foundation; 3, slope support structure.

[0022] 31, geogrid; 32, fixed pile; 33, timber pile support system.

[0023] 332, fence board; 333, fixed pin; 34, longitudinal geotextile bag; 35, bearing platform; 36, geotextile fabric; 37, transverse geotextile bag; 38, backfill; 40, tensioning rope; 41, adjusting ring. DETAILED DESCRIPTION

[0024] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0025] It should be understood that the term "comprising" as used in the specification and the appended claims indicates the presence of the recited features, integers, steps, operations, elements, and / or components but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0026] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this text, "one" not only means "only one", but also means "more than one".

[0027] It should be further understood that the term "and / or" used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0028] In the embodiments shown in the drawings, the indications of directions such as up, down, left, right, front, and back are not absolute but relative to explain the structure and movement of various components of the present application. These indications are appropriate when these components are in the position shown in the drawings. If the position of these components changes, the indications of these directions also change accordingly.

[0029] In addition, in the description of the present application, the terms "first", "second", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, specific implementation manners of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0031] Please refer to Figure 1 , and in combination with Figure 2 and Figure 3 , the utility model discloses a mountain photovoltaic power station box transformer foundation slope support structure sets up on the mountain 1 slope of placing box transformer foundation 2, and this slope support structure 3 includes fixed stake 32 and compacted layer, and fixed stake 32 is used to install on the slope and realize the spacing fixing of compacted layer, and compacted layer forms the locking to the soil layer on the slope.

[0032] Specifically, the utility model is provided with multiple rows of fixed stakes 32 in the slope direction, and each row of fixed stakes 32 is provided with multiple fixed stakes 32 in the width direction of the slope.

[0033] In order to effectively realize the spacing of the compacted layer, the utility model further digs a bearing platform 35 at the bottom of the slope, the edge of the bearing platform 35 is provided with a row of fixed stakes 32, and a baffle is arranged between adjacent fixed stakes 32. In this way, the multiple layers of fixed stakes 32 and baffles divide the slope into multiple sections, and each section is paved with a compacted layer. The compacted layer includes multiple layers of staggered earthwork bags 34, and the earthwork bags 34 at the bottom are pressed on the geotextile 36 in the bearing platform 35 and abut against the baffle. The free end of the geotextile 36 near the baffle is reversely wound onto the upper surface of the earthwork bag 34, and the upper layer of earthwork bags 34 is compacted on the upper part of the bottom layer of earthwork bags 34. The geotextile 36 is reversely wrapped on the upper layer of earthwork bags 34 and is pressed together by the upper layer of compacted layer.

[0034] The utility model forms a three-dimensional reinforcing structure by combining the multiple layers of wood pile support system 33 with the earthwork bags 34, geotextile 36 and earthwork grid 31, significantly enhances the overall shear strength and compactness of the backfill soil body, forms a flexible slope protection layer by using the positive and negative wrapping geotextile 36 and the staggered stacking earthwork bags 34, can both compact the backfill soil by the weight of the bag body and adapt to the slight deformation of the slope, and the reverse wrapping process of the geotextile 36 effectively prevents water and soil loss. The double spacing design of the baffle 332 and the fixed stake 32 accurately restricts the sliding path of the earthwork bag 34 and the geotextile 36, and greatly improves the anti-sliding stability of the slope by cooperating with the longitudinal and transverse alternative stacking mode.

[0035] Further, the height of the fixed stake 32 protruding from the slope is greater than the height of at least two layers of earthwork bags 34.

[0036] Preferably, the utility model still lays geogrid 31 on the platform for bearing box transformer foundation 2, and sets backfill layer 38 on geograft 31, and the backfill layer 38 is filled between the slope surface and the compacted layer.

[0037] It is worth mentioning that the utility model sets the tensioning rope between the fixed pile 32 and the slope, and the tensioning rope is pressed between the adjacent geotextile bag 34 layers to realize the locking and reinforcement of the geotextile bag 34 layers.

[0038] Specifically, the utility model further connects the tensioning rope with the fixed pile 32 at one end, and the other end of the tensioning rope can be fixed on the slope through anchor rod or expansion bolt etc., the tensioning rope includes the tensioning rope 40 and the adjusting ring 41, the adjusting ring 41 is waist-shaped and is provided with screw holes at both ends, one end of the tensioning rope 40 is connected with the screw rod, the screw rod is arranged in the screw hole and is locked through the nut, that is, the tightness of the tensioning rope can be adjusted quickly through the adjusting ring 41.

[0039] The utility model discloses a mountain photovoltaic power station box transformer foundation slope support structure, integrated support and backfill function integrated structure, through the construction of multistage ladder type earth-retaining support and deep anchoring system combined composite support system, while ensuring the stability of the box transformer foundation 2, effectively restraining the slip deformation of backfill soil body, greatly reducing the excavation engineering quantity and the secondary reinforcement cost of slope.

[0040] Compared with the prior art, the utility model discloses a mountain photovoltaic power station box transformer foundation slope support structure, which provides a reliable solution for the standardization construction of the box transformer foundation 2 slope support of the mountain photovoltaic project, combines the wood pile support system 33 with the geotextile bag 34, the geotextile cloth 36 and the geogrid 31, innovatively proposes a kind of slope support structure 3, meets the demand of box transformer backfill soil, and also plays the role of reinforcing box transformer slope.

[0041] To specifically illustrate the implementation mode of this construction technology, the application is illustrated by a specific situation.First, the box transformer foundation 2 is located on the hillside, and when the box transformer foundation 2 is constructed, a local construction platform needs to be excavated on the steep slope, and the box transformer foundation 2 is adjacent to the upper slope of the mountain 1 on one side and the lower slope of the mountain 1 on the other side.

[0042] First, lay geogrid 31 on the platform for bearing box transformer foundation 2, and the laying range of geogrid 31 is determined according to the backfill soil range.The function of laying geogrid 31 is to enhance the overall stability of backfill soil and prevent soil slip.

[0043] Second step, under the slope of the box foundation 2, set up multiple rows of wood pile support system 33, this application takes the specific case of three rows of support system as an example. Each row of wood pile support system 33 contains multiple fixed piles 32, fences 332, and fixed pins 333. The wood piles and fences 332 are fixed by nails or fixed pins 333 or steel wire binding. According to different mountain slope gradients and support requirements, multiple fences 332 can also be set up in each row of wood pile support system 33.

[0044] Third step, at the lowermost layer of wood pile support system 33, excavate the bearing platform 35, which is used to facilitate the laying of geotextile bags 34 and geotextile 36. Lay geotextile 36 at the bottom of the platform, and lay a layer of geotextile bags 34 on top of the geotextile 36, with backfill soil filled in the bags. The reason for laying geotextile bags 34 horizontally is that the space at the bottom of the slope protection platform is limited, and horizontal arrangement is more reasonable. The backfill soil in the geotextile bags 34 should be filled at the optimum moisture content, and the filling thickness should be 18 cm after the bags are laid flat. The laying position of the geotextile bags 34 is consistent with the height of the fence 332 of the wood pile support system 33, and the horizontal arrangement of the geotextile bags 34 has a larger contact area with the fence 332, which better constrains and fixes the geotextile bags 34, preventing them from slipping.

[0045] Fourth step, fold the geotextile 36 to cover the horizontal geotextile bags 37, and continue to lay a layer of vertical geotextile bags 34 on top of the geotextile 36. The vertically laid geotextile bags are staggered and stacked with the horizontally arranged geotextile bags below, further enhancing the stability of the support system. Then fold the geotextile 36 again to cover the geotextile bags in the opposite direction, and repeat the process. During the process of layer-by-layer stacking, the gap between the mountain 1 and the geotextile bags needs to be filled with backfill soil in layers and tamped.

[0046] Fifth step, when the geotextile 36 and geotextile bags are stacked layer by layer to the second row of wood pile support system 33, change the vertical arrangement of the geotextile bags to horizontal arrangement. At this time, because there is enough space, two rows of geotextile bags need to be arranged horizontally to enhance the stability of the geotextile bag stacking, and the length of the fence 332 is laid out. Then use geotextile 36 to cover the geotextile bags in the forward direction, and the horizontal geotextile bags 37 should be at the same height as the fence 332 of the wood pile support system 33, which limits the displacement of the geotextile bags. Then continue to layer-by-layer stack the vertical geotextile bags 34 and geotextile 36. For specific structures, please refer to Figure 4 and Figure 5 .

[0047] In the sixth step, when the geotextile 36 and the geotextile bags 34 are stacked layer by layer to the first row of pile support system 33, the geotextile bags are again arranged in a transverse double-row manner at the first row of pile plank 332, and then the geotextile 36 is used for the last time to cover the geotextile bags in a forward direction and extends to the side of the box foundation 2 to enhance the stability of the geotextile 36. At the same time, a layer of geotextile bags is again stacked vertically above the geotextile 36, and a layer of backfill is again filled. Then, a plurality of fixing piles 32 are driven into the geotextile 36 at the end of the platform close to the slope of the bearing box foundation 2 to prevent the geotextile bags from sliding. The use of multiple fixings can further enhance the integrity of the support system.

[0048] Finally, the method of the present application is only a preferred embodiment, and is not used to limit the protection scope of the present application. 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 mountain photovoltaic power station box transformer foundation slope support structure arranged on a mountain slope where a box transformer foundation is placed, characterized in that, The slope supporting structure comprises fixed piles and compacted layers, multiple rows of fixed piles are arranged at intervals in the slope direction of the slope, a bearing platform is dug at the bottom of the slope, the edge of the bearing platform is provided with fixed piles, a baffle is arranged between adjacent fixed piles, the multiple layers of fixed piles and baffles divide the slope into multiple sections, a compacted layer is laid in each section, the compacted layer comprises multiple layers of staggered laid geotextile bags, the bottom geotextile bag is pressed on the geotextile cloth in the bearing platform and abuts against the baffle, the free end of the geotextile cloth is reversely wound on the geotextile bag and is pressed and combined through the upper geotextile bag, the geotextile cloth is reversely wrapped on the upper geotextile bag and is pressed and combined through the upper compacted layer.

2. The mountain photovoltaic power station box transformer foundation slope support structure according to claim 1, characterized in that, The height of the fixed pile protruding from the slope is greater than the height of at least two layers of geotextile bags.

3. The mountain photovoltaic power station box transformer foundation slope support structure according to claim 1, characterized in that, A geogrid is laid on the platform for the foundation of the box-type transformer, and a backfill layer is pressed on the geogrid, and the backfill layer is filled between the slope surface and the compacted layer.

4. The mountain photovoltaic power station box transformer foundation slope support structure according to claim 1, characterized in that, A tensioning rope is arranged between the fixed pile and the slope.

5. The mountain photovoltaic power station box transformer foundation slope support structure according to claim 4, characterized in that, One end of the tensioning rope is connected to the fixed pile, and the other end of the tensioning rope is fixed on the slope.

6. The mountain photovoltaic power station box transformer foundation slope support structure according to claim 5, characterized in that, The tensioning rope comprises a tensioning rope and an adjusting ring, the adjusting ring is in a waist shape and has screw holes at both ends, and one end of the tensioning rope is connected to a screw rod, which is locked in the screw hole by a nut.

7. The mountain photovoltaic power station box transformer foundation slope support structure according to claim 1, characterized in that, The end of the platform for the foundation of the box-type transformer close to the slope is provided with a fixed pile.

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