Protection device for ancient and famous trees

Abstract

The utility model relates to the field of plant protection, in particular to a protection device for ancient and famous trees. A protection device for ancient and famous trees comprises the ancient trees planted on the ground, a protection wall is arranged on the outer sides of the ancient trees, a protection area is arranged in the protection wall, and the protection device is characterized in that a fire lane is arranged on the outer sides of the ancient trees; a circle of drainage ditches and an apron slope are arranged on the inner side of the protective enclosing wall, the apron slope guides rainwater to the drainage ditches, and the rainwater is drained to a rainwater well outside the protective enclosing wall through a laid drainage pipeline; a water apron slope is temporarily arranged on the outer side of the protection enclosing wall to prevent rainwater from flowing backwards, and 2-4 observation wells are dug in the edge of the protection area to observe the water level change condition and the pH value of water. The device is comprehensive in protection.

Description

Technical Field

[0001] The utility model relates to the field of plant protection, in particular to a protection device for ancient and famous trees. Background Art

[0002] The Chinese utility model patent with the authorization announcement number 210470489U disclosed a protection device for ancient and famous trees on May 8, 2020, which has a guard plate assembly vertically arranged on both sides of the trunk; the guard plate assembly includes a hollow column, and a plurality of telescopic guard plates are embedded in the column, and the cross-section of the telescopic guard plates are all arc-shaped convex structures; after the guard plate assembly is unfolded counterclockwise, the telescopic guard plates are combined to form a circular shell. This utility model is only a protection device for ancient and famous trees after construction, and lacks complete and effective protection for the entire construction process before, during and after. Utility Model Content

[0003] In order to overcome the defects of the prior art and provide a comprehensive ancient tree protection measure, the utility model discloses a protection device for ancient and famous trees.

[0004] The utility model achieves the invention purpose through the following technical solutions:

[0005] A protection device for ancient trees and famous trees, comprising an ancient tree planted on the ground, a protective fence is arranged outside the ancient tree, and a protection zone is inside the protective fence, wherein:

[0006] There is a fire truck lane outside the ancient tree, and the design elevation of the planting soil at the fire truck lane is raised to +4.50m along a gentle slope. That is, the elevation inside the protected area is between +4.20m and +4.50m, the planting soil elevation in the greening area outside the protected area is +4.50m, and the finished surface elevation of the fire truck lane on the north side of the protected area is +4.55m;

[0007] A circle of drainage ditches and drainage slopes are set on the inner side of the protective wall. The drainage slopes lead rainwater to the drainage ditches, and the rainwater is discharged to the rainwater wells outside the protective wall through the laid drainage pipes. Finally, the rainwater is temporarily connected to the rainwater wells in the residential area through the drainage pipes. A drainage slope is temporarily set on the outer side of the protective wall to prevent rainwater backflow. 2 to 4 observation wells are dug at the edge of the protection area to observe the water level changes and the pH value of the water.

[0008] The protection device for ancient and famous trees is characterized in that a 2m to 3m high dense mesh protection wall is set at the root of the ancient tree along the edge of a circular range with a radius of 7m (i.e., the protection area) and a maintenance entrance and exit door is set, and at the same time, a protective straw rope is wound 1.5m upward from the root of the ancient tree.

[0009] The protection device for ancient trees and famous trees is characterized in that: a water dispersion slope is arranged with the root of the ancient tree as the center and the water dispersion slope is arranged within a radius of 2 meters from the center of the ancient tree trunk, with a slope of about 10%, and the elevation is reduced to +4.20m at a radius of 4 meters. When it rains, the rainwater is naturally discharged to the surroundings, and then discharged into the rainwater pipe network through the surrounding rainwater wells to ensure that there is no water accumulation at the roots.

[0010] The utility model has the following beneficial effects:

[0011] 1. This utility model involves specific measures for the protection of ancient trees in the entire process before, during and after construction, which is a full-process and all-round protection;

[0012] 2. The utility model solves the problem of rainwater root irrigation by changing the existing terrain and organizing water dispersion in an orderly manner;

[0013] 3. The utility model is provided with double protection, which protects the famous trees and improves the landscape effect at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the plan for the protection of ancient trees before construction.

[0015] Figure 2 This is the cross-section diagram of the ancient tree protection before construction.

[0016] Figure 3 This is the plan for the protection of ancient trees during construction.

[0017] Figure 4 This is a cross-section diagram of the protection of ancient trees during construction.

[0018] Figure 5 This is the plan for protecting ancient trees after construction.

[0019] Figure 6 This is a cross-section diagram of the ancient tree protection after construction. DETAILED DESCRIPTION

[0020] The present invention is further described below through specific embodiments. Example 1

[0021] A protection device for ancient trees and famous trees is used to strengthen the protection of the century-old boxwood 1 as an ancient tree during the whole process of school construction. Figure 1 to Figure 6 As shown, the details are as follows:

[0022] Figure 1 , Figure 3 and Figure 5 The dotted circle A is the area of ​​the ancient and famous tree protection zone. Figure 2 Point B in the middle is the inner area of ​​the protective wall 2.

[0023] 1. Protection of ancient trees before construction:

[0024] A circle of drainage ditch 3 is set inside the existing protective fence 2, and a water dispersion slope is set inside the protective fence 2 to guide rainwater to the drainage ditch 3, and the rainwater is drained to the rainwater well 4 outside the protective fence 2 through the laid drainage pipes, and finally the rainwater is temporarily connected to the rainwater well 4 in the residential area through the drainage pipes. A water dispersion slope is temporarily set outside the protective fence 2 to prevent rainwater from backflowing. In addition, 2-4 observation wells 5 should be dug at the edge of the protection area to observe the changes in water level and the pH value of water.

[0025] 2. Protection of ancient trees during construction:

[0026] 2.1 In order to minimize the impact on the ancient trees, the existing protective fence 2 on site is retained, and a 2.3-meter-high dense mesh protective wall 6 is set up along the edge of the 7-meter radius circular area (i.e. the protection area) at the roots of the ancient trees, and a maintenance entrance is set up; at the same time, a protective straw rope 7 is wrapped 1.5 meters upward from the roots of the ancient trees.

[0027] 2.1.1 The protection area (14 meters in diameter) is delineated within a 5-meter area outside the vertical projection of the crown of the ancient tree (4 meters in diameter). The edge of the protection area is 7 meters to the north of the new teaching building, 3 meters to the east of the steps of the teaching building, and 4 meters to the south of the land red line. Greenery is mainly planted in and around the protection area.

[0028] 2.1.2 The current elevation in the protected area is +4.40m. The designed planting soil surface is centered on the roots of the ancient trees, with the inside higher and the outside lower. Water is dispersed within a radius of 2 meters, with a slope of about 10%, and the elevation drops to +4.20m at a radius of 4 meters. When it rains, the rainwater will be naturally drained to the surroundings, and then discharged into the rainwater pipe network through 4 surrounding rainwater wells to ensure that there is no water accumulation at the roots. The design elevation of the planting soil near the fire truck lane on the north side is gently raised to +4.50m. That is: the elevation in the protected area is between +4.20m and +4.50m, and the planting soil elevation in the greening area outside the protected area is +4.50m. The finished surface elevation of the fire truck lane on the north side of the protected area is +4.55m.

[0029] 2.1.3 The fire truck lane should be designed to avoid the ancient tree protection area.

[0030] 2.1.4 Protection publicity signs shall be set up in conspicuous locations within the protected area8.

[0031] 2.1.5 Cover the bare soil within the tree root area with expanded clay to prevent the growth of weeds and ensure good air permeability and water permeability as well as landscape effects.

[0032] 2.1.6 The edge of the protected area is protected by a 1.2m high bamboo fence 9, which not only has a certain protective function but also improves the landscape effect.

[0033] 2.1.7 Ground cover is the main crop planted within the reserve. Mimosa is planted within a radius of 2 meters, and leguminous ground cover such as wild pea is planted in most of the rest of the reserve, which plays a certain role in nitrogen fixation.

[0034] 2.1.8 The planting around the protected area is mainly ground cover and shrubs to avoid competing with ancient trees for living resources; the main plants planted are: mimosa, wild pea, lawn (paradise grass + ryegrass), rhododendron, golden privet, red-flowered loblolly, small-leaved gardenia, osmanthus, bauhinia, purple magnolia, weeping crabapple, peach, purple-leaf plum, etc.

[0035] 2.2 Static pressure pile foundation construction is used during the construction of the project to reduce the impact of vibration on the root system and soil layer. Before the construction of static pressure piles, site preparation should be done first. The site should meet the requirements of "three connections and one leveling". The construction sequence and process flow of static pressure piles are: measurement and layout → pile driver positioning → lifting prefabricated piles → stabilizing piles → pressing piles → connecting piles → delivering piles → inspection and acceptance → transferring pile drivers.

[0036] 2.3 When excavating earthwork or foundation pits, in the vicinity of the ancient tree, in accordance with the principle of not damaging the tree and meeting the construction requirements, manual layered excavation is adopted, and prestressed soil nail walls are built layer by layer for protection. If the roots of the ancient tree spread out in all directions, it is not allowed to damage the roots. The cleared roots are wrapped with plastic film and moisturized, and people are often sent to water and maintain moisture to prevent the roots from losing water. If necessary, multiple 12mm diameter steel wire ropes are set in the direction of the ancient tree relative to the foundation pit, and are firmly fixed with ground anchors to ensure that the ancient tree does not tilt. After the excavation construction is completed, the original soil is backfilled immediately. During the excavation process, at least 1-2 technicians are left near the ancient tree, and people are sent to deal with the tree roots in time.

[0037] 2.4 During the construction process, drainage should be done well around the ancient trees to prevent waterlogging. A water-dispersing slope can be set up near the ancient trees, and the rainwater can be drained to the rainwater well 4 outside the site using the laid drainage pipes. Finally, the rainwater can be connected to the temporary drainage point of the construction using the drainage pipes; a water-dispersing slope can be temporarily set up outside the protective fence 2 to prevent rainwater from backflowing. In addition, 2-4 observation wells 5 should be dug at the edge of the protection area to observe the changes in water level and the pH value of the water. See details. Figure 1 .

[0038] 3. Protection of ancient trees after construction:

[0039] Update protection facilities and prepare for use

[0040] 3.1 Remove the existing protective fence 2. During the removal, be careful not to damage the roots and soil of the ancient trees and maintain the existing elevation of the roots of the ancient trees.

[0041] 3.2 The dense mesh protective wall 6 at the edge of the protected area is removed and replaced with a 1.2m high bamboo fence 9, which retains a certain degree of protection function while improving the landscape effect.

[0042] 3.3 During the renovation of the drainage network, connect the rainwater to the site rainwater network. Figure 1 .

[0043] 3.4 Adjust the elevation and slope within the protected area to direct rainwater to the drainage network or discharge it outside the protected area.

Claims

1. A protection device for ancient trees and famous trees, comprising an ancient tree planted on the ground, a protective wall is arranged outside the ancient tree, and a protection area is inside the protective wall, wherein: A fire truck is set outside the ancient tree. The design elevation of the planting soil at the fire truck is raised to +4.50m along a gentle slope, that is, the elevation inside the protected area is between +4.20m and +4.50m, the planting soil elevation in the greening area outside the protected area is +4.50m, and the finished surface elevation of the fire truck on the north side of the protected area is +4.55m; A circle of drainage ditches and drainage slopes are set on the inner side of the protective wall. The drainage slopes lead rainwater to the drainage ditches, and the rainwater is discharged to the rainwater wells outside the protective wall through the laid drainage pipes. Finally, the rainwater is temporarily connected to the rainwater wells in the residential area through the drainage pipes. A drainage slope is temporarily set on the outer side of the protective wall to prevent rainwater backflow. 2 to 4 observation wells are dug at the edge of the protection area to observe the water level changes and the pH value of the water.

2. The protection device for ancient and famous trees as claimed in claim 1 is characterized in that: A 2m to 3m high dense mesh protection wall is set up along the edge of a circular area with a radius of 7m at the root of the ancient tree, and a maintenance entrance and exit door is set up. At the same time, a protective straw rope is wrapped 1.5m upwards from the root of the ancient tree.

3. The protection device for ancient and famous trees as claimed in claim 1 or 2, characterized in that: The root of the ancient tree is used as the center to set up a drainage slope with high inside and low outside. The drainage is set within a radius of 2 meters from the center of the main trunk of the ancient tree with a slope of 10%. The elevation drops to +4.20m at a radius of 4 meters. When it rains, the rainwater will be naturally drained to the surroundings and then discharged into the rainwater pipe network through the surrounding rainwater wells to ensure that there is no water accumulation at the roots.

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