Greening structure suitable for hard rock high and steep slope of nuclear power plant

Abstract

The utility model discloses a greening structure suitable for a hard rock high and steep slope of a nuclear power plant, which comprises a water collecting ditch arranged on the slope and used for collecting rainwater; the planting groove is formed in the side slope, the planting groove is communicated with the water collecting ditch, the water collecting ditch provides maintenance water for the planting groove, and the planting groove is used for containing soil for planting vegetation. According to the utility model, water accumulation and supplementation are provided for the planting groove by combining with a slope platform water collecting ditch.

Description

Technical Field

[0001] The utility model belongs to the technical field of geotechnical engineering, and in particular relates to a greening structure suitable for high and steep hard rock slopes of nuclear power plants. Background Art

[0002] The slopes of nuclear power plants are usually high and steep hard rock slopes, with a single-stage slope height of about 10m and a slope ratio of 1:0.3 to 1:0.5. The greening of high and steep rock slopes has always been a difficult problem in the design of slope greening. The main reasons are as follows:

[0003] ⑴Hard rock slopes lack the soil and nutrient conditions required for vegetation. Hard rock slopes do not have the soil environment necessary for vegetation growth, and cannot be directly used for seed sowing or vegetation belt greening; the rock mass has poor water retention function and contains few active nutrients, so it is difficult for the roots of vegetation to absorb enough water and nutrients from the slope rock layer for its growth and development.

[0004] (2) The rock slope of the nuclear power plant is steep. The rainwater runoff speed on the slope is high, which is very easy to cause erosion in high rainfall areas. The naturally weathered soil particles on the slope and the soil particles brought by wind are difficult to remain on the slope, making it difficult for vegetation to survive.

[0005] ⑶ The natural ecological conditions of artificial slopes are poor. Rock artificial slopes are not covered by soil and lack water. The temperature of the exposed rock surface is too high under direct sunlight. Even if the seeds are embedded in the cracks of the rocks by wind or animals, they will be difficult to germinate due to the high temperature.

[0006] In the vegetation greening technology of high and steep rock slopes, the first problem to be solved is to provide a stable environment for plant growth. Common greening methods include soil spraying, thick substrate spraying vegetation slope protection technology, etc. Due to the hardness of rock slopes, poor water retention, and poor soil consolidation conditions, the existing greening methods have many shortcomings in practical applications. For example, soil spraying is only suitable for slopes with gentle slopes and flat surfaces. The thickness of the base layer is limited, the soil consolidation and water retention capacity is poor, and it is easy to erode and lose under heavy rainfall conditions; the thick layer of substrate has poor stability, weak resistance to rainwater erosion, poor long-term effectiveness of substrate nutrients, and is mainly planted with grass, which degrades seriously in the later stage. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a greening structure suitable for the high and steep slopes of hard rocks in nuclear power plants in view of the above-mentioned deficiencies in the prior art, and to provide water accumulation and replenishment for planting troughs through the water collection ditch on the slope platform.

[0008] The technical solution adopted to solve the technical problem of the utility model is to provide a greening structure suitable for high and steep slopes of hard rocks in nuclear power plants, including:

[0009] Ditch, set on the slope, the ditch is used to collect rainwater;

[0010] The planting trough is set on the slope. The planting trough is connected with the drainage ditch. The drainage ditch provides maintenance and water for the planting trough. The planting trough is used to hold soil for planting vegetation.

[0011] Preferably, the water collecting ditch and the planting trough are both arranged on the horseway platform of the slope, the water collecting ditch is arranged at the foot of the slope adjacent to the upper level, and the planting trough is arranged outside the water collecting ditch.

[0012] Preferably, the greening structure suitable for high and steep hard rock slopes of nuclear power plants further includes: a step, which is arranged at the junction of the ditch and the waterfall, and the top surface of the step is higher than the bottom of the ditch and lower than the top surface of the trough wall of the planting trough.

[0013] Preferably, the greening structure suitable for high and steep hard rock slopes of nuclear power plants further comprises: an anti-seepage layer, which is arranged on the outer wall of the water collection ditch and / or the outer wall of the planting trough.

[0014] Preferably, the anti-seepage layer is any one of a waterproof mortar coating, an SBS waterproof membrane, and a HDPE geomembrane.

[0015] Preferably, the greening structure suitable for high and steep slopes of hard rock in nuclear power plants also includes: a water storage structure, the water storage structure is placed in a planting trough, the water storage structure is used to store water, soil is placed on the water storage structure, and a drainage outlet is provided on the planting trough, and the height of the drainage outlet is lower than the top of the water storage structure.

[0016] Preferably, the greening structure suitable for high and steep hard rock slopes of nuclear power plants further comprises: a first pipeline, which is respectively connected to the bottom of the water collection ditch and the water storage structure.

[0017] Preferably, the water storage structure comprises a plurality of crushed stones or pebbles, and the crushed stones or pebbles are filled to form gaps, and the gaps are used to accommodate water.

[0018] Preferably, the particle size of the crushed stone or pebbles is 20 mm to 50 mm.

[0019] Preferably, the greening structure suitable for high and steep hard rock slopes of nuclear power plants also includes: a filter drainage layer, which is arranged on the inner wall of the planting trough, and the soil and the drain outlet are respectively on both sides of the filter drainage layer. The filter drainage layer allows the soil to remain in the filter drainage layer when the water is discharged through the drain outlet.

[0020] Preferably, the filtration and drainage layer is a non-woven geotextile or a gravel layer.

[0021] Preferably, the greening structure suitable for high and steep hard rock slopes of nuclear power plants further includes: a climbing component, which is respectively connected to the slope and the planting trough, and is used for climbing plants in the planting trough to grow toward the upper slope surface through the climbing component.

[0022] Preferably, the climbing component is a climbing net or a climbing frame.

[0023] The utility model provides a greening structure suitable for high and steep slopes of hard rocks in nuclear power plants, which has the following beneficial effects:

[0024] ⑴ The utility model combines the water collection ditch on the slope platform to provide water accumulation and replenishment for the planting trough;

[0025] (2) The utility model fills the lower part of the planting trough with graded gravel or pebbles as a water storage layer;

[0026] ⑶ The utility model lays geotechnical materials on the inner wall of the planting trough to prevent the loss of planting soil in the trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the overall model diagram of the greening structure in Example 2 of the utility model;

[0028] Figure 2 It is a top view of the connection method of the water collection ditch, planting trough and waterfall in Example 2 of the utility model;

[0029] Figure 3 It is a schematic elevation view of the water collection ditch and the ridge in Example 2 of the utility model.

[0030] In the figure: 1-water collection ditch; 2-waterproof mortar coating; 3-climbing net; 4-planting trough; 5-second pipeline; 6-non-woven geotextile; 7-water storage structure; 8-first pipeline; 9-slope; 10-improved soil; 11-horse platform; 12-waterfall; 13-bump; 14-wall of the planting trough;

[0031] 15- platform drainage ditch; 16- bottom line of water collection ditch; 17- top line of ridge; 18- water storage height;

[0032] 19-Slope. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0036] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0037] Example 1

[0038] This embodiment provides a greening structure suitable for high and steep hard rock slopes of nuclear power plants, including:

[0039] Ditch, set on the slope, the ditch is used to collect rainwater;

[0040] The planting trough is set on the slope. The planting trough is connected with the drainage ditch. The drainage ditch provides maintenance and water for the planting trough. The planting trough is used to hold soil for planting vegetation.

[0041] This embodiment combines the slope platform with a water collection ditch to provide water accumulation and replenishment for the planting trough.

[0042] Example 2

[0043] like Figures 1 to 3 As shown, this embodiment provides a greening structure suitable for a high and steep hard rock slope 9 of a nuclear power plant, comprising:

[0044] A water collection ditch 1 is arranged on the slope 9, and the water collection ditch 1 is used to collect rainwater;

[0045] The planting trough 4 is arranged on the side slope 9. The planting trough 4 is connected with the water collecting ditch 1. The water collecting ditch 1 provides maintenance and water replenishment for the planting trough 4. The planting trough 4 is used to hold soil for planting vegetation.

[0046] This structure can replenish water to the planting trough 4 through the water collection ditch 1 in both rainy season and dry season, which is beneficial to the growth of plants and the rapid formation of green landscape.

[0047] Preferably, the water collecting ditch 1 and the planting trough 4 are both arranged on the horseway platform 11 of the slope 9 , the water collecting ditch 1 is arranged at the foot of the slope 9 of the upper level, and the planting trough 4 is arranged outside the water collecting ditch 1 .

[0048] like Figure 2 As shown, preferably, the greening structure suitable for the high and steep hard rock slope 9 of the nuclear power plant also includes: a ridge 13, the ridge 13 is arranged at the junction of the water collecting ditch 1 and the waterfall 12, and the top surface of the ridge 13 is higher than the bottom of the water collecting ditch 1 and lower than the top surface of the groove wall 14 of the planting trough. Specifically, the top surface line 17 of the ridge is higher than the bottom line 16 of the water collecting ditch and lower than the top surface of the groove wall 14 of the planting trough. The ridge 13 is higher than the bottom of the water collecting ditch 1 and lower than the top of the water collecting ditch 1, which is equivalent to a dam, so it can intercept part of the rainwater. The height difference between the bottom surface of the water collecting ditch 1 and the top surface of the ridge 13 is the water storage height, and the excess rainwater is drained away by the waterfall 12. It is prevented that the water collecting ditch 1 overflows to the top surface of the planting trough 4 after being filled with rainwater, so as to reduce the soil loss in the planting trough 4.

[0049] A platform drainage ditch 15 is provided on the horseway platform 11, and the platform drainage ditch 15 is respectively connected to the upper level waterfall 12 and the lower level waterfall 12. When the water level in the water collection ditch 1 exceeds the top surface line 17 of the abrupt ridge, it overflows to the platform drainage ditch 15.

[0050] Preferably, the greening structure suitable for the high and steep hard rock slope 9 of a nuclear power plant further comprises: an anti-seepage layer, which is arranged on the outer wall of the water collection ditch 1 and / or the outer wall of the planting trough 4.

[0051] Preferably, the anti-seepage layer is any one of a waterproof mortar coating, an SBS waterproof membrane, and a HDPE geomembrane.

[0052] Specifically, the anti-seepage layer in this embodiment is formed by curing the waterproof mortar coating 2 .

[0053] Preferably, the greening structure suitable for the hard rock high and steep slope 9 of the nuclear power plant further includes: a water storage structure 7, the water storage structure 7 is placed in the planting trough 4, the water storage structure 7 is used to store water, the soil is placed on the water storage structure 7, and the planting trough 4 is provided with a drainage port, the height of the drainage port is lower than the top of the water storage structure 7. The water storage height 18 of the water storage structure 7 is not higher than the height of the drainage port.

[0054] Specifically, the greening structure suitable for the high and steep hard rock slope 9 of the nuclear power plant in this embodiment also includes: a second pipe 5, which is arranged on the drain outlet and passes through the groove wall 14 of the planting groove, and the second pipe 5 is a PVC pipe.

[0055] Preferably, the greening structure suitable for the high and steep hard rock slope 9 of a nuclear power plant further comprises: a first pipeline 8, and the first pipeline 8 is connected to the bottom of the water collection ditch 1 and the water storage structure 7 respectively.

[0056] Specifically, in this embodiment, the first pipe 8 penetrates the wall of the water collecting ditch 1, one end of the first pipe 8 is connected to the water collecting ditch 1, and the other end of the first pipe 8 is connected to the water storage structure 7. The first pipe 8 is a PVC pipe.

[0057] Preferably, the water storage structure 7 includes a plurality of crushed stones or pebbles, and the crushed stones or pebbles are filled to form gaps, and the gaps are used to accommodate water.

[0058] Preferably, the particle size of the crushed stone or pebbles is 20 mm to 50 mm.

[0059] Preferably, the greening structure suitable for the high and steep hard rock slope 9 of the nuclear power plant also includes: a filter drainage layer, which is arranged on the inner wall of the planting trough 4, and the soil and the drain outlet are respectively on both sides of the filter drainage layer. The filter drainage layer is used for filter drainage when the water is discharged through the drain outlet.

[0060] Preferably, the anti-filtration and drainage layer is a non-woven geotextile 6 or a gravel layer.

[0061] Preferably, the greening structure suitable for the high and steep hard rock slope 9 of a nuclear power plant further includes: a climbing component, which is respectively connected to the slope 9 and the planting trough 4, and is used for the climbing plants in the planting trough 4 to grow toward the upper slope 9 through the climbing component.

[0062] Preferably, the climbing component is a climbing net 3 or a climbing support.

[0063] The function of the water collection ditch 1 is to collect rainwater and maintain the water supply channel. It is connected to the planting trough 4 through the first pipe 8 to replenish water for the water storage structure 7. The water storage structure 7 is filled with large-size gravel. The gaps between the gravel can accommodate more water. The upper part of the water storage layer is improved soil 10 rich in nutrients. The improved soil is a nutritious planting soil configured for the selected plants. Organic matter, biological compound fertilizers and minerals are usually added to ordinary loam to improve soil fertility and aeration, and promote the growth and development of plant roots. The planting trough 4 discharges excess rainwater during the rainy season through the second pipe 5 to avoid long-term immersion of the plant roots. A layer of non-woven geotextile 6 is laid on the inner wall of the planting trough 4 to prevent the soil from being carried away when the rainwater is discharged. Before the planting trough 4 is built, a waterproof mortar coating 2 is applied to the slope 9 platform and the surface of the slope.

[0064] The structure is located on the horseway platform 11 between the rock slopes 9, the water collection ditch 1 is built adjacent to the foot of the upper level slope 9, and the outer side of the water collection ditch 1 is a planting trough 4. A ridge 13 is set at the junction of the water collection ditch 1 and the waterfall 12. The top surface of the ridge 13 is higher than the bottom of the water collection ditch 1 and lower than the top surface of the groove wall 14 of the planting trough. On the basis of ensuring smooth drainage of the slope 9, part of the rainwater is intercepted to provide water for the planting trough 4.

[0065] The greening structure in this embodiment is applicable to the high and steep hard rock slope 9 of a nuclear power plant, and the specific construction process is as follows:

[0066] (1) Excavation and trimming of slope 9;

[0067] (2) cleaning the bridleway platform 11 of the slope 9, applying waterproof mortar to form a waterproof mortar coating 2;

[0068] (3) Build a water collection ditch 1 and install a first pipe 8 at the bottom of the ditch;

[0069] (4) Building the outer wall of the planting trough 4 and installing the second outer wall pipe 5;

[0070] (5) The inner wall of the planting trough 4 is laid with a non-woven geotextile 6;

[0071] (6) Fill the planting trough 4 with gravel to form a water storage structure layer;

[0072] ⑺Filling the planting trough 4 with improved planting soil;

[0073] ⑻Install climbing net 3;

[0074] ⑼ Construction of sudden rise 13 and waterfall 12;

[0075] ⑽Plant green plants.

[0076] The use of the greening structure in this embodiment is applicable to the high and steep hard rock slope 9 of a nuclear power plant:

[0077] (1) During the rainy season, rainwater on the slope accumulates in the water collection ditch 1, and the water level of the aquifer in the planting trough 4 is replenished through the first pipe 8 at the bottom of the water collection ditch 1;

[0078] (2) When the rainfall is too heavy, the water level in the planting trough 4 rises rapidly, and when it reaches a certain water level, it is discharged through the second pipe 5 of the drainage outlet on the side wall of the planting trough 4;

[0079] (3) In the dry season, water is pumped into the water collection ditch 1 by means of a pumping device, and the first pipe 8 at the bottom of the ditch is used to replenish water to the roots of the green plants;

[0080] (4) The non-woven geotextile 6 on the side wall of the planting trough 4 can prevent the soil in the planting trough 4 from being carried away when the water is drained through the second pipe 5 during the rainy season.

[0081] This embodiment provides a greening structure suitable for a high and steep hard rock slope 9 of a nuclear power plant, and has the following beneficial effects:

[0082] (1) This embodiment combines the water collection ditch 1 on the slope 9 platform to provide water accumulation and replenishment for the planting trough 4;

[0083] (2) In this embodiment, graded gravel or pebbles are filled in the lower part of the planting trough 4 as an aquifer;

[0084] ⑶ In this embodiment, geotechnical materials (sand and gravel) are laid on the inner wall of the planting groove 4 to form a geotechnical material layer to prevent the loss of planting soil in the groove.

[0085] Example 3

[0086] This embodiment provides a greening structure suitable for high and steep slopes of hard rocks in nuclear power plants, which differs from the embodiment 2 in that:

[0087] The anti-seepage layer in this embodiment is SBS waterproof membrane.

[0088] Example 4

[0089] This embodiment provides a greening structure suitable for high and steep slopes of hard rocks in nuclear power plants, which differs from the embodiment 2 in that:

[0090] The anti-seepage layer in this embodiment is a HDPE geomembrane.

[0091] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A greening structure suitable for high and steep slopes of hard rock in nuclear power plants, characterized in that: include: Ditch, set on the slope, the ditch is used to collect rainwater; The planting trough is set on the slope. The planting trough is connected with the drainage ditch. The drainage ditch provides maintenance and water for the planting trough. The planting trough is used to hold soil for planting vegetation.

2. The greening structure suitable for high and steep slopes of hard rocks in nuclear power plants according to claim 1 is characterized in that: The drainage ditch and planting trough are both set on the horseway platform of the slope. The drainage ditch is set at the foot of the slope of the upper level, and the planting trough is set outside the drainage ditch.

3. The greening structure suitable for high and steep slopes of hard rocks in nuclear power plants according to claim 1 is characterized in that: Also includes: The abrupt ridge is arranged at the junction of the water collecting ditch and the waterfall, and the top surface of the abrupt ridge is higher than the bottom of the water collecting ditch and lower than the top surface of the trough wall of the planting trough.

4. The greening structure suitable for high and steep slopes of hard rocks in nuclear power plants according to claim 1 is characterized in that: Also includes: The anti-seepage layer is arranged on the outer wall of the water collection ditch and / or the outer wall of the planting trough.

5. The greening structure suitable for high and steep slopes of hard rocks in nuclear power plants according to claim 4 is characterized in that: The anti-seepage layer is any one of waterproof mortar coating, SBS waterproof membrane and HDPE geomembrane.

6. The greening structure suitable for high and steep slopes of hard rocks in nuclear power plants according to claim 1 is characterized in that: Also includes: The water storage structure is placed in the planting trough and is used to store water. The soil is placed on the water storage structure. The planting trough is provided with a drainage outlet, and the height of the drainage outlet is lower than the top of the water storage structure.

7. The greening structure suitable for high and steep slopes of hard rocks in nuclear power plants according to claim 6 is characterized in that: Also includes: The first pipeline is connected to the bottom of the water collection ditch and the water storage structure respectively.

8. The greening structure suitable for high and steep slopes of hard rocks in nuclear power plants according to claim 6 is characterized in that: The water storage structure includes a plurality of crushed stones or pebbles filled with gaps to hold water.

9. The greening structure suitable for high and steep hard rock slopes of nuclear power plants according to claim 8, characterized in that: The particle size of crushed stone or pebbles is 20mm to 50mm.

10. The greening structure suitable for high and steep slopes of hard rocks in nuclear power plants according to claim 6, characterized in that: Also includes: The reverse filtration drainage layer is arranged on the inner wall of the planting trough, and the soil and the drainage outlet are respectively on both sides of the reverse filtration drainage layer. The reverse filtration drainage layer allows the soil to remain in the reverse filtration drainage layer when the water is discharged through the drainage outlet.

11. The greening structure suitable for high and steep slopes of hard rocks in nuclear power plants according to claim 10, characterized in that: The filtration and drainage layer is a non-woven geotextile or gravel layer.

12. The greening structure suitable for high and steep hard rock slopes of nuclear power plants according to claim 1, characterized in that: Also includes: The climbing components are respectively connected to the side slope and the planting trough. The climbing components are used for the climbing plants in the planting trough to grow toward the upper side slope surface through the climbing components.

13. The greening structure suitable for high and steep hard rock slopes of nuclear power plants according to claim 12, characterized in that: The climbing component is a climbing net or a climbing support.

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