Soil covering and grass planting protection structure suitable for rock cutting slope and construction method of soil covering and grass planting protection structure

Abstract

The invention discloses a soil covering and grass planting protection structure suitable for a rock cutting slope. The soil covering and grass planting protection structure comprises a flow guide mechanism, a reinforcing mechanism and a greening mechanism. The flow guide mechanism comprises drainage side ditches, transverse flow guide ditches, longitudinal flow guide ditches, J-shaped flow guide grooves and U-shaped flow guide grooves; the drainage side ditch is arranged at the slope toe of the side slope; the transverse diversion trenches are transversely arranged along the slope and are W-shaped; a plurality of longitudinal diversion trenches are vertically arranged along the side slope, and the longitudinal diversion trenches are connected with the lowest positions of wave troughs of the W-shaped transverse diversion trenches, so that the side slope is partitioned and layered; the J-shaped flow guide grooves are embedded into the transverse flow guide ditches; the U-shaped flow guide grooves are embedded into the longitudinal flow guide ditches; the lower end of the U-shaped diversion trench is connected with the drainage side ditch; the reinforcing mechanism comprises a fixing piece and a reinforcing mesh; the greening mechanism comprises an overburden layer and a grass planting layer. The invention further discloses a construction method suitable for the soil covering and grass planting protection structure for the rock cutting slope. The stability and the greening effect of the silty rock cutting high slope greening structure can be ensured.

Description

Technical Field

[0001] The invention relates to the field of slope construction, and in particular to a soil covering and grass planting protection structure suitable for rocky road cutting slopes and a construction method thereof. Background Art

[0002] Slope greening is an ecological slope protection method that beautifies the environment and consolidates the soil to protect the slope. With the development, people have put forward higher requirements for the aesthetics and safety of slope greening in urban roads. However, since the siltstone layer of the high slope of the siltstone layer road cut is itself barren and has poor water retention, the rock mass is easy to soften and disintegrate after being soaked in water, and has poor weathering resistance. Therefore, the aesthetics and safety of the greening of the high slope of the siltstone layer road cut are difficult to guarantee. The existing siltstone layer road cut high slope greening commonly uses the soil spraying and grass planting technology, but because the rock slope has poor water retention and is easy to weather and disintegrate, the surface rainwater will form runoff on the surface of the siltstone layer after passing through the covering soil layer in the rainy season. The spraying layer is easily washed away and the slope stability is poor. In the dry season, due to the thin thickness of the spraying covering soil layer, the green plants are prone to lack of water and die, so the plant growth and slope stability of the high slope of the siltstone layer road cut are not ideal.

[0003] Therefore, we urgently need a greening structure that can be applied to high slopes of siltstone road cuts. Summary of the invention

[0004] The main purpose of the present invention is to provide a soil covering and grass planting protection structure suitable for rocky road cutting slopes and a construction method thereof, the structure and method can ensure the stability and greening effect of the greening structure of the high slope of the siltstone road cutting.

[0005] The technical solution adopted by the present invention is:

[0006] A soil-covering and grass-planting protection structure suitable for rocky road cutting slopes, comprising a protection unit, wherein the protection unit comprises a diversion mechanism, a reinforcement mechanism, and a greening mechanism;

[0007] The diversion mechanism includes drainage side ditches, transverse diversion ditches, longitudinal diversion ditches, J-shaped diversion grooves, and U-shaped diversion grooves; the drainage side ditches are arranged at the foot of the slope; there are multiple transverse diversion grooves, which are arranged transversely along the slope, and the transverse diversion grooves are W-shaped; there are multiple longitudinal diversion grooves, which are arranged vertically along the slope; the longitudinal diversion grooves vertically penetrate the W-shaped transverse diversion grooves to divide and layer the slope, and the longitudinal diversion grooves are connected to the lowest point of the trough of the W-shaped transverse diversion grooves; the J-shaped diversion grooves are embedded in the transverse diversion grooves; the U-shaped diversion grooves are embedded in the longitudinal diversion grooves; the lower end of the J-shaped diversion grooves is connected to the U-shaped diversion grooves, and the lower end of the U-shaped diversion grooves is connected to the drainage side ditches;

[0008] The reinforcement mechanism includes a fixing member and a steel mesh; the fixing member fixes the J-shaped guide groove on the wall of the transverse guide groove; the steel mesh is placed on the slope;

[0009] The greening mechanism comprises a covering soil layer and a grass layer; the covering soil layer is placed on the slope at the partition formed by the diversion mechanism; the steel mesh is placed in the middle of the covering soil layer; and the roots of the grass layer are rooted in the wire mesh of the steel mesh.

[0010] According to the above scheme, there are multiple protection units, which are connected horizontally and vertically and share a drainage ditch, that is, the drainage ditch is only set at the bottom of the slope.

[0011] According to the above scheme, a settlement displacement observation point is installed on the high trough wall of the J-shaped diversion trough to monitor the soil displacement and realize effective monitoring and early warning of the soil displacement.

[0012] According to the above scheme, the greening mechanism also includes an irrigation system; the irrigation system includes a water inlet interface, a pre-buried water pipe, and a watering nozzle; the water inlet interface is installed at the drainage ditch; the pre-buried water pipe is pre-buried in the J-shaped guide groove and the U-shaped guide groove, and is connected with the water inlet interface; the watering nozzle is installed on the pre-buried water pipe; water is transported to the slope through the pre-buried water pipe, and water is sprayed through the watering nozzle to maintain the greening of the slope, and the maintenance is very convenient.

[0013] According to the above scheme, the J-shaped diversion trough and the U-shaped diversion trough are filled with crushed stones, and permeable geotextiles are laid along the trough walls of the J-shaped diversion trough and the U-shaped diversion trough; surface runoff and rock surface runoff can be quickly collected into the diversion system through the gaps in the crushed stones in the J-shaped diversion trough, and the permeable geotextile can prevent soil loss.

[0014] According to the above scheme, the angle between the transverse guide groove and the longitudinal guide groove is 30°-60°, which can better guide the flow while ensuring structural stability.

[0015] According to the above plan, the spacing between adjacent transverse diversion ditches is 3-5 meters, and the spacing between adjacent longitudinal diversion ditches is 3-5 meters, which can better guide the flow while ensuring structural stability.

[0016] According to the above scheme, the fixing member is an anchor. The J-shaped diversion trough is fixed by the anchor, and the side trough wall of the J-shaped diversion trough is fixed to the slope surface, the overburden layer and the grass layer are horizontally divided and supported, and the load of the attachment layer is also decomposed to prevent landslides and make the structure more stable.

[0017] According to the above scheme, the transverse diversion grooves are arranged parallel to the longitudinal direction of the slope, and the longitudinal diversion grooves are arranged parallel to the transverse direction of the slope; the spacing between adjacent transverse diversion grooves is the same, and the spacing between adjacent longitudinal diversion grooves is the same; by dividing the slope surface into a highly uniform division, it is convenient to control the flow distance of the slope runoff entering the diversion mechanism, thereby improving the interception effect.

[0018] The present invention also provides a construction method for a rocky road cutting slope covering soil and grass planting protection structure, which comprises the following steps:

[0019] 1) After the slope excavation is completed, longitudinal diversion ditches and W-shaped transverse diversion ditches are excavated along the slope longitudinally and transversely, drainage ditches are excavated at the bottom of the slope, and the bottom of the longitudinal diversion ditch is connected to the drainage ditch;

[0020] 2) The prefabricated U-shaped diversion trough is embedded in the longitudinal diversion ditch, and a permeable geotextile is laid along the trough wall;

[0021] The prefabricated J-shaped diversion trough is embedded in the transverse diversion ditch and fixed by anchors, and a permeable geotextile is laid along the trough wall; the settlement displacement observation points are installed on the high trough wall of the J-shaped diversion trough;

[0022] 3) Lay pre-buried water pipes along the U-shaped diversion groove and the J-shaped diversion groove, install water inlet interfaces at the drainage ditches, and install irrigation nozzles on the pre-buried water pipes in the J-shaped diversion groove;

[0023] 4) Fill the U-shaped diversion trough and the J-shaped diversion trough with gravel;

[0024] 5) Lay the steel mesh along the slope, ensuring that the steel mesh of the steel mesh is located in the middle of the covering soil layer;

[0025] 6) Fill the dividing frame formed by the transverse diversion ditch and the longitudinal diversion ditch with a covering soil layer, and then cover it with a grass layer; the covering soil layer and the grass layer should avoid the J-shaped diversion ditch and the U-shaped diversion ditch area to prevent the soil from entering the gravel layer and affecting the drainage effect.

[0026] The beneficial effects of the present invention are:

[0027] The W-shaped transverse diversion ditch divides and diverts the rainwater on the slope and collects it into the drainage ditch, which can effectively prevent the rainwater from collecting along the slope and eroding the slope.

[0028] The longitudinally arranged W-shaped transverse diversion ditch is used to divide the slope longitudinally, which is convenient for controlling the slope runoff to flow into the diversion mechanism and improving the interception effect;

[0029] The W-shaped transverse diversion ditch is used to decompose the vertical sliding load of the soil slope through the transverse diversion ditch and symmetrically transfer it to the connection node with the longitudinal diversion ditch, so that the left and right sides support each other and improve the structural stability;

[0030] The slope structure is divided into sections for diversion and reinforcement through W-shaped transverse diversion ditches and longitudinal diversion ditches, ensuring the stability of the covering soil layer, thereby improving the survival rate and growth effect of the plants;

[0031] The J-shaped diversion trough is filled with gravel to intercept the rock surface in light rain and the slope surface in heavy rain, thus realizing the layered interception of surface runoff and rock surface runoff.

[0032] By setting up an irrigation system, the greening of the slope can be easily maintained, solving the problem of difficult maintenance of green plants on high slopes;

[0033] The W-shaped diversion system is formed by setting up transverse diversion ditches and longitudinal diversion ditches, which is the basis for zoned diversion, can effectively improve the diversion efficiency and shorten the irrigation water supply path;

[0034] The stability of the structure is ensured by setting up J-shaped guide grooves and U-shaped guide grooves;

[0035] By setting up a J-shaped diversion trough, the overburden layer and grass layer are divided and supported horizontally, and the load of the attachment layer is decomposed to prevent landslides;

[0036] By installing a steel mesh in the middle of the soil cover, the soil cover of each segment can be connected and reinforced, making it easier for plants in the grass layer to survive; the roots of the plants are tied in the wire mesh to make the slope more stable. This structure also prevents soil loss and ensures the greening effect; after the greening structure is divided into zones for diversion and reinforcement, it can ensure that the slope can adhere to a thicker soil cover, thereby improving the survival rate and growth effect of the plants;

[0037] The present invention utilizes the principles of layered and block diversion and layered and block reinforcement to enable drainage ditches, transverse diversion ditches, longitudinal diversion ditches, J-shaped diversion grooves, and U-shaped diversion grooves to form fast-divided and layered diversion channels, thereby improving diversion efficiency. Both surface runoff and rock surface runoff can be quickly collected into the diversion mechanism through the J-shaped diversion groove, thereby preventing rainwater from collecting and scouring the slope surface. The present invention solves the problem that the siltstone layer has poor water retention, rainwater easily passes through the overburden layer and forms runoff on the surface of the siltstone layer, resulting in the overall sliding of the overburden layer, loss of planting soil, and collapse of turf.

[0038] The soil covering and grass planting structure adopts a thicker soil layer than the spraying technology, which can improve the survival rate and growth effect of plants;

[0039] A balance has been struck between function and benefit, reducing the construction cost to the greatest extent possible while ensuring the aesthetics and safety of the slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 It is a schematic diagram of the plane structure suitable for the soil covering and grass planting protection structure of the rocky road cutting slope;

[0042] Figure 2 It is a longitudinal section plane diagram suitable for the soil covering and grass planting protection structure of rocky road cutting slope;

[0043] Figure 3 This is a schematic diagram of the installation of the J-type guide trough;

[0044] Figure 4 It is a schematic diagram of the structure of a J-shaped guide trough and a U-shaped guide trough;

[0045] Figure 5 It is a schematic diagram of the excavation of the diversion mechanism;

[0046] Figure 6 It is a flow chart of the construction method of soil covering and grass planting protection structure applicable to rocky road cutting slopes;

[0047] In the figure: 101, slope; 102, drainage ditch; 103, transverse diversion ditch; 104, longitudinal diversion ditch; 105, water inlet interface; 106, embedded water pipe; 107, irrigation nozzle; 111, J-type diversion trough; 112, U-type diversion trough; 113, anchor; 114, settlement and displacement observation point; 201, steel mesh; 202, gravel; 203, permeable geotextile; 301, covering soil layer; 401, grass planting layer. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0049] Example 1

[0050] See also Figure 1-Figure 5 A protective structure suitable for covering the rocky road cutting slope with soil and grass, which includes a protective unit, and the protective unit includes a diversion mechanism, a reinforcement mechanism, and a greening mechanism.

[0051] The diversion mechanism includes a drainage ditch 102, a transverse diversion ditch 103, a longitudinal diversion ditch 104, a J-shaped diversion groove 111, and a U-shaped diversion groove 112. The drainage ditch 102 is arranged at the foot of the slope 101. The transverse diversion ditch 103 is W-shaped, and there are multiple diversions, which are arranged horizontally at intervals of 4 meters along the slope 101. There are multiple longitudinal diversion grooves 104, which are arranged vertically at intervals of 4 meters along the slope 101. The longitudinal diversion ditch 104 vertically runs through the W-shaped transverse diversion ditch 103, dividing the slope 101 into sections and layers, and the longitudinal diversion ditch 104 is connected to the lowest point of the trough of the W-shaped transverse diversion ditch 103. The angle between the transverse diversion ditch 103 and the longitudinal diversion ditch 104 is 45°. The J-shaped diversion groove 111 is embedded in the transverse diversion ditch 103. In order to monitor soil displacement and realize effective monitoring and early warning of soil displacement, a settlement displacement observation point 114 can be installed on the high groove wall of the J-shaped diversion groove 111. The U-shaped diversion groove 112 is embedded in the longitudinal diversion groove 104; the lower end of the J-shaped diversion groove 111 is connected to the U-shaped diversion groove 112, and the lower end of the U-shaped diversion groove 112 is connected to the drainage ditch 102.

[0052] The reinforcement mechanism includes anchors 113 and steel mesh 201. The anchors 113 fix the side channel wall of the J-shaped guide channel 111 to the slope 101. The anchors 113 fix the J-shaped guide channel 111 to the channel wall of the transverse guide channel 103. The steel mesh 201 is placed on the slope 101.

[0053] The greening mechanism includes a soil covering layer 301 and a grass planting layer 401. The soil covering layer 301 is placed on the slope 101, at the partition formed by the transverse diversion ditch 103 and the longitudinal diversion ditch 104. The steel mesh 201 is placed in the middle of the soil covering layer 301. The roots of the grass planting layer 401 are rooted in the wire mesh of the steel mesh 201.

[0054] In this embodiment, the J-shaped diversion groove 111 and the U-shaped diversion groove 112 are filled with crushed stones 202, and a permeable geotextile 203 is laid along the groove walls of the J-shaped diversion groove 111 and the U-shaped diversion groove 112. Both surface runoff and rock surface runoff can be quickly collected into the diversion mechanism through the gaps of the crushed stones 202 in the J-shaped diversion groove 111, and the permeable geotextile 203 can prevent soil loss.

[0055] In this embodiment, in order to maintain the grass layer 401, improve the survival rate of the grass layer 401, and facilitate irrigation, an irrigation system can be set on the slope 101. The irrigation system includes a water inlet interface 105, a pre-buried water pipe 106, and a watering nozzle 107. The water inlet interface 105 is installed at the drainage ditch 102. The pre-buried water pipe 106 is pre-buried in the J-shaped guide groove 111 and the U-shaped guide groove 112, and is connected to the water inlet interface 105. The watering nozzle 107 is installed on the pre-buried water pipe 106. The water in the drainage ditch 102 is transported to the slope 101 through the pre-buried water pipe 106, and water is sprayed through the watering nozzle 107 to maintain the greening of the slope.

[0056] According to the above scheme, the transverse diversion ditch is arranged parallel to the longitudinal direction of the slope surface, and the longitudinal diversion ditch is arranged parallel to the transverse direction of the slope surface;.

[0057] Example 2

[0058] The difference from Example 1 is:

[0059] There are multiple protection units, which are connected horizontally and vertically and share a drainage ditch, that is, the drainage ditch is only set at the bottom of the slope.

[0060] The spacing between adjacent transverse diversion ditches is the same, and the spacing between adjacent longitudinal diversion ditches is the same; by highly uniformly dividing the slope surface, it is convenient to control the flow distance of the slope runoff entering the diversion mechanism, thereby improving the interception effect.

[0061] Example 3

[0062] See also Figure 1-Figure 6 A construction method for a rocky road cutting slope covering soil and grass planting protection structure comprises the following steps:

[0063] 1) If Figure 5 As shown, after the slope excavation is completed, in the process of trimming the rock cut slope 101, a longitudinal diversion ditch 104 and a W-shaped transverse diversion ditch 103 are excavated along the slope longitudinally and transversely, a drainage ditch 102 is excavated at the bottom of the slope 101, and the bottom of the longitudinal diversion ditch 104 is connected to the drainage ditch 102; wherein, the longitudinal diversion ditch 104 is arranged at a 4-meter interval along the slope 101, and the transverse diversion ditch 103 is arranged at a 4-meter interval along the slope 102, and the transverse diversion ditch 103 forms an angle of 45° with the longitudinal diversion ditch 104; the drainage ditch 102 is excavated in a size of 10 cm×10 cm;

[0064] 2) Embed the prefabricated U-shaped diversion trough 112 into the longitudinal diversion ditch 104 and lay the permeable geotextile 203 along the trough wall;

[0065] The prefabricated J-shaped diversion trough 111 is embedded in the transverse diversion ditch 103 and fixed by anchors 113, and the anchors 113 are arranged at 50cm. A permeable geotextile 203 is laid along the trough wall. A settlement displacement observation point 114 is installed on the high trough wall of the J-shaped diversion trough 111.

[0066] 3) If Figure 5 As shown, a pre-buried water pipe 106 is laid along the U-shaped guide groove 112 and the J-shaped guide groove 111, a water inlet interface 105 is installed in the middle of the drainage ditch 102, and a watering nozzle 107 is installed on the pre-buried water pipe 106 in the J-shaped guide groove 111; for the convenience of watering, the watering nozzle 107 can be installed in the middle of the pre-buried water pipe 106 in the J-shaped guide groove 111;

[0067] 4) Filling the U-shaped guide groove 112 and the J-shaped guide groove 111 with crushed stones 202;

[0068] 5) Laying the steel mesh 201 along the slope surface, ensuring that the steel mesh of the steel mesh 201 is located in the middle of the covering soil layer 301;

[0069] 6) Fill the covering soil layer 301 in the dividing frame formed by the transverse diversion groove 103 and the longitudinal diversion groove 104, and cover it with the grass layer 401 after leveling; the covering soil layer 301 and the grass layer 401 avoid the J-shaped diversion groove 111 and the U-shaped diversion groove 112 area to prevent the soil from entering the gravel layer and affecting the drainage effect;

[0070] 7) After the above construction process is completed, the slope is covered with film and watered for maintenance.

[0071] Before construction, the transverse J-shaped guide ditch 111 and the longitudinal U-shaped guide ditch 112 are prefabricated in advance for use. The size requirements are matched with the transverse guide ditch 103 and the longitudinal guide ditch 104. The high ditch wall size of the J-shaped guide ditch 111 is determined according to the thickness of the covering soil.

[0072] The present invention performs W-shaped segmentation and reinforcement on the overburden layer 301 and the grass layer 401, which can decompose the load of the attachment layer (overburden layer 301, grass layer 401), greatly reducing the risk of topsoil sliding; and installing settlement displacement observation points on the high trough wall of the J-shaped diversion trough to timely monitor the displacement of the soil body and give early warning of the occurrence of landslides. The present invention adopts a transverse J-shaped diversion trough and fills gravel to achieve layered diversion of surface runoff and rock surface runoff, solving the problem that rainwater easily passes through the overburden layer and gathers on the surface of the siltstone layer, causing the overburden layer to slide as a whole. The present invention can make the turf easier to survive through the wire mesh and the overburden layer grass planting technology. When the roots of the turf are rooted in the wire mesh, it is more stable and the landscape effect is improved at the same time. The zoned diversion and zoned reinforcement measures of the present invention can ensure that the slope can adhere to a thicker overburden layer, thereby improving the survival rate and growth effect of the plants. The present invention adopts a watering system, which can easily maintain the greening of the slope, solving the problem of difficult maintenance of green plants on high slopes. The present invention has a simple structure and is easy to implement, and achieves a balance between function and benefit, and reduces the cost to the greatest extent under the premise of ensuring the aesthetics and safety of the slope.

[0073] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0074] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A soil-covering and grass-planting protective structure suitable for rocky road cutting slopes, characterized in that: It includes a protection unit, which includes a diversion mechanism, a reinforcement mechanism, and a greening mechanism; The diversion mechanism includes drainage side ditches, transverse diversion ditches, longitudinal diversion ditches, J-shaped diversion grooves, and U-shaped diversion grooves; the drainage side ditches are arranged at the foot of the slope; there are multiple transverse diversion grooves, which are arranged transversely along the slope, and the transverse diversion grooves are W-shaped; there are multiple longitudinal diversion grooves, which are arranged vertically along the slope; the longitudinal diversion grooves vertically penetrate the W-shaped transverse diversion grooves to divide and layer the slope, and the longitudinal diversion grooves are connected to the lowest point of the trough of the W-shaped transverse diversion grooves; the J-shaped diversion grooves are embedded in the transverse diversion grooves; the U-shaped diversion grooves are embedded in the longitudinal diversion grooves; the lower end of the J-shaped diversion grooves is connected to the U-shaped diversion grooves, and the lower end of the U-shaped diversion grooves is connected to the drainage side ditches; The reinforcement mechanism includes a fixing member and a steel mesh; the fixing member fixes the J-shaped guide groove on the wall of the transverse guide groove; the steel mesh is placed on the slope; The greening mechanism comprises a covering soil layer and a grass layer; the covering soil layer is placed on the slope at the partition formed by the diversion mechanism; the steel mesh is placed in the middle of the covering soil layer; and the roots of the grass layer are rooted in the wire mesh of the steel mesh.

2. The soil covering and grass planting protection structure for rocky road cutting slopes according to claim 1 is characterized in that: There are multiple protection units, which are connected horizontally and vertically and share a drainage ditch.

3. The soil covering and grass planting protection structure for rocky road cutting slopes according to claim 1 is characterized in that: A settlement displacement observation point is installed on the high trough wall of the J-shaped diversion trough to monitor soil displacement.

4. The soil-covering and grass-planting protection structure for rocky road cutting slopes according to claim 1 is characterized in that: The greening mechanism also includes an irrigation system; The irrigation system includes a water inlet interface, a pre-buried water pipe, and a watering nozzle; the water inlet interface is installed at the drainage ditch; the pre-buried water pipe is pre-buried in the J-shaped diversion groove and the U-shaped diversion groove, and is connected to the water inlet interface; the watering nozzle is installed on the pre-buried water pipe.

5. The soil covering and grass planting protection structure for rocky road cutting slopes according to claim 1 is characterized in that: The J-shaped diversion trough and the U-shaped diversion trough are filled with crushed stones, and permeable geotextiles are laid along the trough walls of the J-shaped diversion trough and the U-shaped diversion trough.

6. The soil covering and grass planting protection structure for rocky road cutting slopes according to claim 1 is characterized in that: The included angle between the transverse guide groove and the longitudinal guide groove is 30°-60°.

7. The soil covering and grass planting protection structure for rocky road cutting slopes according to claim 1 or 6, characterized in that: The transverse diversion grooves are arranged parallel to the longitudinal direction of the slope surface, and the longitudinal diversion grooves are arranged parallel to the transverse direction of the slope surface; the spacing between adjacent transverse diversion grooves is the same, and the spacing between adjacent longitudinal diversion grooves is the same.

8. The soil-covering and grass-planting protection structure for rocky road cutting slopes according to claim 7 is characterized in that: The spacing between adjacent transverse diversion ditches is 3-5 meters, and the spacing between adjacent longitudinal diversion ditches is 3-5 meters.

9. The soil covering and grass planting protection structure for rocky road cutting slopes according to claim 1 is characterized in that: The fixing member is an anchor.

10. The construction method for a rocky road cutting slope covering soil and grassing protection structure as claimed in any one of claims 1 to 9, characterized in that: The steps include: 1) After the slope excavation is completed, longitudinal diversion ditches and W-shaped transverse diversion ditches are excavated along the slope longitudinally and transversely, drainage ditches are excavated at the bottom of the slope, and the bottom of the longitudinal diversion ditch is connected to the drainage ditch; 2) The prefabricated U-shaped diversion trough is embedded in the longitudinal diversion ditch, and a permeable geotextile is laid along the trough wall; The prefabricated J-shaped diversion trough is embedded in the transverse diversion ditch and fixed by anchors, and a permeable geotextile is laid along the trough wall; the settlement displacement observation points are installed on the high trough wall of the J-shaped diversion trough; 3) Lay pre-buried water pipes along the U-shaped diversion groove and the J-shaped diversion groove, install water inlet interfaces at the drainage ditches, and install irrigation nozzles on the pre-buried water pipes in the J-shaped diversion groove; 4) Fill the U-shaped diversion trough and the J-shaped diversion trough with gravel; 5) Lay the steel mesh along the slope, ensuring that the steel mesh of the steel mesh is located in the middle of the covering soil layer; 6) Fill the dividing frame formed by the transverse diversion ditch and the longitudinal diversion ditch with a covering soil layer, and then cover it with a grass layer; the covering soil layer and the grass layer avoid the J-shaped diversion ditch and the U-shaped diversion ditch area.

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