CN113235513B

CN113235513B - Damaged calcium bloom dam body and landscape ecological restoration method

Info

Publication number: CN113235513B
Application number: CN202110615827.3A
Authority: CN
Inventors: 裴向军; 周立宏; 宋会兴; 杜杰; 肖维阳; 李怡; 雷泞菲; 张晓超
Original assignee: Chengdu Univeristy of Technology
Current assignee: JIUZHAI VALLEY SCENIC SPOT ADMINISTRATION; Chengdu Univeristy of Technology
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2022-03-25
Anticipated expiration: 2041-06-02
Also published as: CN113235513A

Abstract

The invention provides a damaged calcium bloom dam body and a landscape ecological restoration method, and relates to the technical field of damaged calcium bloom geological restoration. The method at least comprises the following steps: and (3) carrying out vibroflotation gravel fixation, sticky rice mortar dam construction, bamboo anchor reinforced slope protection, ecological material seam plugging, fractal landscape design and native plant greening on the damaged calcium dam body and the landscape to be repaired in sequence. The method can effectively repair the damaged calcium-blooming dams and restore the corresponding landscape, and has small manual intervention and small environmental influence.

Description

Damaged calcium bloom dam body and landscape ecological restoration method

Technical Field

The invention relates to the technical field of ecological restoration of a damaged calcium bloom geological landscape, in particular to a damaged calcium bloom dam body and a landscape ecological restoration method.

Background

Calcium bloom (Travertine or Tufa), also known as Travertine or Tufa, is a chemical precipitate of calcium carbonate formed by the release of a large amount of carbon dioxide when geothermal water containing calcium bicarbonate is brought close to and exposed to the surface in an open system.

The California landscape zone not only has unique karst landform scientific research value, but also has rich aesthetic value, is an important component of China and even underground landscape areas of the world, and has profound influence on local geography, economy and national culture.

In recent years, the integrity and aesthetic value of the artificial ecological building are partially or totally lost due to the large-area damage of natural operation such as earthquake, wind erosion and water erosion and human activities such as engineering construction and tourism development.

Taking Turkey cotton castle as an example, after a calcium bloom embankment collapses, mineral substances in the calcium bloom embankment become fragile under the dilution of rainstorm, the Turkey government recovers the original shape by using cement when the Turkey desert collapses for the first time, and the calcium bloom embankment is directly flushed to the downstream of a river by the rainstorm when the Turkey government collapses for the second time, and the calcium bloom embankment is not available when the Turkey cotton castle is repaired.

For damaged caltrop geology, no effective and high-applicability repairing method exists at present.

In view of this, the present application is specifically made.

Disclosure of Invention

The invention aims to provide a damaged calcium bloom dam body and a landscape ecological restoration method, which can effectively restore damaged calcium bloom geology and restore corresponding landscape, and have small manual intervention and small environmental influence.

The application can be realized as follows:

the application provides a damaged calcium-bearing dam body and a landscape ecological restoration method, which at least comprises the following steps: and (3) carrying out vibroflotation gravel fixation, sticky rice mortar dam construction, bamboo anchor reinforced slope protection, ecological material seam plugging, fractal landscape design and native plant greening on the damaged calcium dam body and the landscape to be repaired in sequence.

In an optional embodiment, the method further comprises designing a repair model to simulate and obtain a preset repair state of the damaged geological structure of the calcium dam body and data parameters in the preset repair state before repair.

In an alternative embodiment, the vibro-replacement stone matrix comprises: adopt vibroflotation gravel pile to consolidate the ground in order to reach predetermined ground bearing capacity.

In an optional embodiment, in the process of vibroflotation gravel foundation stabilization, the vibroflotation gravel piles are arranged in a plum blossom shape.

In an alternative embodiment, the distance between two adjacent vibro-crushed stone piles is 1.5-2m, preferably 1.8 m.

In an alternative embodiment, the glutinous rice mortar damming comprises: and building a dam body by using a dam building material, wherein the dam building material comprises sticky rice mortar.

In an alternative embodiment, the glutinous rice mortar is a modified glutinous rice mortar, and the modified glutinous rice mortar is prepared from glutinous rice glue, lime, gypsum, a water repellent, and plant fibers.

In an alternative embodiment, the modified glutinous rice mortar is prepared from 0.4-0.5 part of glutinous rice glue, 0.1-0.2 part of lime, 0.10-0.22 part of gypsum, 0.015-0.02 part of water repellent and 0.075-0.225 part of plant fiber by weight.

In an alternative embodiment, the modified waxy rice slurry has a flowability of 120-250mm and a setting time of 90-360 min.

In an alternative embodiment, the bamboo anchor reinforced revetment comprises: bamboo anchor reinforcement is adopted for slope protection; the bamboo anchor reinforcement is composed of a bamboo anchor rod with a hollow structure and glutinous rice mortar poured into the hollow structure;

in an alternative embodiment, a hole is formed in the slope to be protected, a bamboo anchor rod is inserted into the hole, and glutinous rice mortar is poured into the hollow area of the bamboo anchor rod.

In an optional embodiment, after the bamboo anchor reinforced slope protection is finished, the strain fluctuation of the bamboo anchor rod is not more than 800 mu epsilon.

In an alternative embodiment, the ecological material caulking comprises: and (4) grouting, reinforcing and plugging cracks on the surface of the dam body and in the dam body.

Wherein, grouting reinforcement and gap plugging are carried out by adopting ecological materials, and the ecological materials comprise glutinous rice mortar or other environment-friendly materials.

In an alternative embodiment, the ecological material is a modified glutinous rice mortar.

In an alternative embodiment, the fractal landscape design includes: and (3) designing the morphological parameters of the damaged calcium-blooming dam body and the repaired landscape on the surface of the dam body so that the repaired calcium-blooming dam body is basically consistent with the original dam body and the peripheral landscape before damage.

In an alternative embodiment, the characteristics related to the morphological parameters include the upstream face of the dam, the downstream face of the dam, and the crown line.

In an alternative embodiment, the native plant is greened by a local plant that does not affect the diversity of the native species.

The beneficial effect of this application includes:

the damaged calcium bloom dam body can be effectively repaired and the corresponding landscape can be recovered by performing vibroflotation gravel fixation, sticky rice mortar dam construction, bamboo anchor reinforced slope protection, ecological material seam plugging, fractal landscape design and native plant greening on the damaged calcium bloom dam body and the landscape to be repaired at least in sequence.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a graph comparing the damage of an earthquake to a spark sea in example 1;

FIG. 2 is a schematic view showing pile arrangement of vibro-replacement stone piles in the repairing method provided in example 1;

fig. 3 is a schematic view of a dam repair structure in the repair method provided in embodiment 1;

FIG. 4 is a real-time photograph of the upstream curve of the spark dam body before water storage in example 1 after repair;

FIG. 5 is a photograph of a real scene of the upstream curve of the repaired spark dam in example 1 after water storage;

FIG. 6 is a photograph showing a real view of the water-exiting surface of the spark sea dam in the course of repair construction in example 1;

FIG. 7 is a photograph of a real scene of the withdrawal surface of the spark dam at the later stage of the repair construction in example 1;

FIG. 8 is a photograph of a real scene of the restored pre-impoundment spark dam exit surface of example 1;

fig. 9 is a photograph of a real scene of the restored water-stored spark dam body waterfall in example 1.

Icon: 1-a gravel cushion layer; 2-a dam body; 3-restoring the surface layer; 4-vibrating the gravel pile; 5-glutinous rice mortar block stone; 6-glutinous rice mortar and calhua mixture.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

The method for restoring the ecology of the damaged calcium bloom geological landscape provided by the application is specifically explained below.

The application provides a damaged calcium bloom geological landscape ecological restoration method, which at least comprises the following steps: and (3) performing vibroflotation, stone crushing and foundation fixing, sticky rice mortar dam building, reinforcing rib slope protection, dam body reinforcement, fractal landscape design and plant greening on the damaged calcium bloom geological landscape to be repaired in sequence.

Preferably, the method further comprises designing a repair model to simulate and obtain the preset repair state of the damaged calcium dam and the landscape and the data parameters in the preset repair state before repair.

By the green ecological restoration technology, the groundwater seepage, surface water overflow, ecological water supply and atmospheric precipitation regulation of the relevant damaged calcium bloom dam body can be restored, and the ecological balance of microorganisms and calcium bloom can be maintained.

Taking the damaged calcium bloom geological landscape to be repaired as a dam body form as an example, the stability and the bearing capacity of the dam foundation can be improved and the groundwater seepage can be reduced by reinforcing the dam foundation by using the vibroflotation gravel pile. The vibroflotation gravel pile can be used for the stratum such as sandy soil, mucky soil, silt soil, underwater conditions and the like, and has the characteristics of great improvement on the bearing capacity of the foundation, high construction speed, environment-friendly materials, excellent economy and the like.

In the process of vibroflotation gravel consolidation, the vibroflotation gravel piles are arranged in a plum blossom shape (the front row and the rear row are arranged in a crossed way). In some specific embodiments, the distance between two adjacent vibro-replacement stone piles may be 1.5-2m, preferably 1.8m, and in addition, other distances may be set according to actual conditions.

When the bottom layer of the dam foundation is a soft layer (such as a sludge layer), before the vibroflotation gravel pile is arranged, a gravel cushion layer is laid firstly, and then the vibroflotation gravel pile is inserted into and penetrates through the gravel cushion layer to a deeper position, so that the gravel cushion layer plays a certain role in fixing the vibroflotation gravel pile.

It should be noted that the pile diameter, the insertion depth, the pile spacing, the mud content of the broken stones contained in the vibroflotation gravel pile, the particle size of the broken stones, and the like of the vibroflotation gravel pile depend on different specific situations of the damaged calcium bloom geological landscape to be repaired (including the specific position of the damaged calcium bloom geological landscape to be repaired, the area to be repaired, and the like).

In some preferred embodiments, the broken stones used for vibro-replacement stone column directly adopt the broken stones existing in damaged calcium bloom geological landscape to be repaired and the surrounding mountain collapse, the materials are obtained from local sources, the broken stone transportation cost can be reduced, and the materials are environment-friendly and excellent in economical efficiency.

In an alternative embodiment, the glutinous rice mortar damming comprises: and building a dam body by using a dam building material, wherein the dam building material comprises sticky rice mortar. The sticky rice mortar is obtained by mixing sticky rice soup and mortar, wherein the amylopectin contained in the sticky rice soup can control the growth of calcium carbonate crystals on one hand and can generate a compact microstructure on the other hand, so that the dam body has higher strength.

Preferably, the above-mentioned glutinous rice mortar may be a modified glutinous rice mortar prepared from materials including glutinous rice glue, lime, gypsum, a water repellent and plant fibers.

The modified glutinous rice mortar may be prepared from 0.4-0.5 parts by weight of glutinous rice glue, 0.1-0.2 parts by weight of lime, 0.10-0.22 parts by weight of gypsum, 0.015-0.02 parts by weight of water repellent, and 0.075-0.225 parts by weight of plant fiber.

Wherein the content of glutinous rice glue can be 0.4 part, 0.45 part or 0.5 part, and can also be any other value within the range of 0.4-0.5. The lime content may be 0.1, 0.15 or 0.2 parts, or any other value within the range of 0.1-0.2. The content of gypsum may be 0.1 part, 0.15 part, 0.2 part, and 0.22 part, and may be any other value within the range of 0.10 to 0.22. The water repellent can be 0.015 part, 0.018 part or 0.02 part, and can also be any value within the range of 0.015-0.02. The vegetable fiber can be 0.075 part, 0.1 part, 0.15 part, 0.2 part, or 0.225 part, or any other value within the range of 0.075 to 0.225. The water repellent and the plant fiber may be those commonly used in the art, and are not limited herein.

Preferably, the fluidity of the modified glutinous rice mortar is 120-250mm, the setting time is 90-360min, and the technical problems of difficult water flowing and condensation and durability of the lime-based material are solved.

In an alternative embodiment, the bamboo anchor reinforced revetment comprises: bamboo anchor reinforcement is adopted for slope protection; the bamboo anchor reinforcement is composed of a bamboo anchor rod with a hollow structure and glutinous rice mortar poured into the hollow structure.

Also in this application, use the bamboo stock to replace ordinary reinforcing bar stock, also replace the reinforcing bar in the ordinary stock with the bamboo timber. Meanwhile, glutinous rice mortar is used as a grouting material instead of cement mortar. The reinforcing rib at least has the advantages of environmental protection and low energy consumption. The sticky rice mortar and the bamboo anchor rod are matched to form a reinforcing rib structure and effectively improve the stability of the whole slope surface of the dam body.

In operation, the hole is opened on the slope to be protected, the bamboo anchor rod is inserted into the hole, and then the glutinous rice mortar is poured into the hollow area of the bamboo anchor rod. The inserting depth of the bamboo anchor rod is at least inserted into a fastening area inside the slope-dam body, so that the bamboo anchor rod forms an anchoring section, a free section and an expenditure section from bottom to top, wherein the anchoring section is located in the fastening area inside the slope and the dam body, the free section is located in a loose area relative to the fastening area, and the expenditure section is located outside the slope.

The bamboo anchor rod reinforcement working process is as follows: the plastic deformation zone of the bamboo anchor rod mainly appears at the bamboo joint part of the bamboo anchor rod, and the bamboo joint and the slurry cementing surface are continuously damaged in the friction extrusion process and other processes due to factors such as stress and the like to form a separation friction deformation zone, so that the efficacy is finally lost.

Preferably, after the bamboo anchor reinforced slope protection is finished, the strain fluctuation of the bamboo anchor is not more than 800 mu epsilon (1 mu epsilon-10)^-6)。

Wherein, grouting reinforcement and caulking are carried out by adopting ecological materials, and the ecological materials comprise glutinous rice mortar or other environment-friendly materials, preferably the modified glutinous rice mortar.

According to the thickness and the unstable degree of the residual dam body after grouting, the arrangement of grouting holes can be selectively and correspondingly increased at the position of the dam abutment.

Furthermore, a restoring surface layer is arranged on the surface of the dam body by using a mixture of the sticky rice mortar and the calcium bloom, and the designed shape can be displayed in a form of weaving a wire mesh (which can contain carbon fibers), using reinforcing steel bars as an outer support and pouring the sticky rice mortar and the calcium bloom mixture by adopting a mesh-weaving mode.

The above morphological parameters may be referred to as features including the upstream face of the dam, the downstream face of the dam, and the crown line.

Specifically, morphological parameters of the repaired dam body are constructed by quantizing characteristics of the remained dam body such as the upstream surface, the outlet surface and the crown line by adopting fractal dimension parameters, so that the repaired dam body is consistent with the original dam body and the surrounding landscape in the aspects of symmetry, rhythm and the like, harmony of the repaired dam body and the surrounding landscape is realized, and the visual unity is formed.

In an alternative embodiment, the native plant is greened by a local plant that does not affect the diversity of the native species. Specifically, a soil seed bank method can be adopted to collect residual dam body surface soil and cover soil to restore the ground cover plants of the dam body for planting, so that the species for repairing the dam body are all native species. The native plants are used as the main unit of the green restoration of the dam body and are ecologically compatible with the original environment, so that the original plant ecological environment of the dam body is restored.

On the basis, the damaged calcium dam body can be effectively repaired by the method, and the originality and the integrity of the damaged calcium dam body are recovered.

The features and properties of the present invention are described in further detail below with reference to examples.

Examples

The spark ocean is known as the blue lake, the Pond; the periphery of the lake is dense forest, and the lake water is hidden in heavy emerald, such as a crystal and clear emerald. The aesthetic value of the sparkling sea mainly comprises a calcium bloom lake, a calcium bloom waterfall and dam, vegetation growing on the calcium bloom dam and the lake bank, aquatic animals and plants and the like. The elevation of the spark sea lake is about 2178m, the area is about 3.5ha, the depth is 9-16.5m, and the storage capacity is about 4.5 multiplied by 10⁵m³。

7.0-level earthquake in 8.8.8 days of Kyuhai village in 2017 causes the damage of the core landscape spark sea calhua heritage point in the Kyuhai village scenic region to be serious. The downstream dam breaking dike of the sparkling sea (the middle part breaks to form a trapezoidal gap with the length of about 40m, the thickness of about 12m in the south and north and the depth of about 15 m) is almost completely dried up. Meanwhile, in the period more than one year after the earthquake, the calcium bloom continuously degrades, including continuous collapse of calcium bloom dams at the upstream and downstream of the spark sea and lakes and calcium bloom dunes in the lakes, desertification, weathering, blackening, erosion and corrosion of the calcium bloom, pollution type microorganisms appear at the bottom of the lake due to drying of the spark sea, the biomass of algae is obviously increased, and some woody plants of the salicaceae and rosaceous families appear at the bottom of the lake.

The evaluation results show that earthquakes greatly reduce the aesthetic value of the spark sea. The landscape characteristic element affected most is the disappearance of lake water, namely the sparkling sea lake; secondly, the instability of the calcium bloom and the reduction of the aesthetic value of the degraded calcium bloom are caused; in addition, vegetation landscape destruction, waterfall disappearance, and fish species number reduction due to habitat loss are also manifestations of reduced aesthetic value of earthquakes on sparkling seas.

Meanwhile, the sparkling sea, the downstream double-dragon sea, the upstream horizontal dragon sea and the tree positive group sea form a long-term stable lake-calcium bloom dam system. The spark sea dykes and dams are dug up to cause the spark sea to be dried up to form a water head difference, so that the balance is broken, and the risk that the system is broken down in a further lake is increased. A comparative graph of the damage of an earthquake to a spark sea is shown in fig. 1.

The embodiment provides an ecological restoration method for a Kyuai ditch sparkling sea landscape, which refers to the following steps:

(1) model set-up

Before repair, a repair model (a corresponding spark sea dam model can be constructed by adopting sketch up) is designed to simulate and obtain a preset repair state of the damaged calcium dam body and data parameters in the preset repair state. Meanwhile, the plane, the vertical face and the section of the waterfall are combined to guide the site construction.

(2) Vibroflotation gravel solid foundation

The vibroflotation gravel pile is adopted to reinforce the foundation so as to achieve the preset foundation bearing capacity, improve the stability and the bearing capacity of the dam foundation and reduce the groundwater seepage.

The used broken stone is broken stone left after the earthquake in the spark sea area and is introduced into the materials related to the stratum such as sandy soil, mucky soil, silt soil, underwater conditions and the like, and the method has the characteristics of great improvement on the bearing capacity of the foundation, high construction speed, environment-friendly materials, excellent economy and the like.

In the process of vibro-replacement and foundation stabilization, the arrangement of vibro-replacement stone piles is shown in fig. 2. That is, the pile arrangement form is plum blossom-shaped arrangement, and can also be understood as arrangement in multiple rows and multiple columns, each row and each column are staggered, the distance between two adjacent rows is 1.8m, and the distance between two adjacent columns is 1.8 m.

The composite foundation stability analysis calculation result is as follows: 305.3 Kpa; total settling of downstream (zone i): 29.72 mm; total settling on upstream (partition ii): 59.91 mm.

(3) Glutinous rice mortar damming

Mixing 0.4-0.5 part of glutinous rice glue, 0.1 part of lime, 0.16 part of gypsum, 0.015-0.02 part of water repellent and 0.075-0.225 part of plant fiber to obtain the modified glutinous rice mortar.

And (3) building a dam body by using the modified sticky rice mortar as a dam building material.

(4) Reinforced slope protection

The bamboo anchor rod with the diameter of 80mm is used for replacing a common steel bar anchor rod (bamboo is used for replacing steel bars in the common anchor rod), and meanwhile, glutinous rice mortar is used for replacing cement mortar to serve as a grouting material. The reinforcing rib structure is formed by the bamboo anchor rod with the hollow structure and the glutinous rice mortar poured into the hollow structure.

And (3) drilling a hole on the slope to be protected, inserting the bamboo anchor rod into the hole, and pouring glutinous rice mortar into the hollow area of the bamboo anchor rod. The inserting depth of the bamboo anchor rod is at least inserted into a fastening area inside the slope-dam body, so that the bamboo anchor rod forms an anchoring section, a free section and an expenditure section from bottom to top, wherein the anchoring section is located in the fastening area inside the slope and the dam body, the free section is located in a loose area relative to the fastening area, and the expenditure section is located outside the slope.

After the bamboo anchor reinforcement slope protection is finished, the strain fluctuation of the bamboo anchor rod is not more than 800 mu epsilon.

(5) Ecological material caulking

The modified glutinous rice mortar is used for grouting, caulking and reinforcing cracks on the surface of the dam body and in the dam body.

According to the thickness and the instability degree of the residual dam body of the slurry, arranging grouting holes at the position of the dam abutment correspondingly; and the grouting holes are arranged on the left bank and the right bank of the upstream residual dam body and the downstream residual dam body.

The grouting holes are also arranged in a quincunx shape, the pitch of the holes is 2m, the aperture is 90mm, the depth of the holes is 13m, and the row pitch is 1.5 m.

Further, the step is narrower in the dam body construction of spark sea conservation dam upstream face, can't clear up through the view of piling up the mode of stone, so, restore the top layer with sticky rice mortar and calcium hua mixture setting on dam body surface, specific: the designed model is shown in the form of woven wire mesh, steel bar for external support and glutinous rice mortar pouring, and the designed model is shown in the form of woven wire mesh, steel bar for external support and glutinous rice mortar and calcium mixture pouring.

Referring to fig. 3, the arrow indicates the water flow direction, the lower layer of the dam body 2 is provided with at least 4m of gravel cushion layer 1, the vibrating gravel pile 4 is inserted into and penetrates through the gravel cushion layer 1 to enter the lower part of the gravel cushion layer 1, the upper part of the gravel cushion layer 1 is used for building the dam body 2 by using sticky rice mortar stones 5, the width of the top platform of the dam body 2 is 13m, the height of the dam body 2 is 8.7m, and the slopes of two sides of the dam body 2 are respectively 1:0.5 and 1: 0.7. A recovery surface layer 3 is arranged above the dam body 2 by using a mixture 6 of glutinous rice mortar and calcium bloom, the height of the recovery surface layer 3 is 2.8m, protective blankets are further arranged on two sides of the bottom of the dam body 2, the height of the protective blanket on the upstream side is 1m, and the height of the protective blanket on the downstream side is 2 m. The length of the blanket located on the downstream side was 8 m. The glutinous rice mortar stone 5 used in the blanket had a diameter of 1.5 m.

(6) Fractal landscape design

On the basis of fractal characteristic analysis of the sea bank of the positive group of the core heritage point tree of the Jiuzhaigou, the obvious fractal characteristic of the sea bank of the core heritage point tree of the Jiuzhaigou is determined; and quantizing the characteristics of the upstream surface, the downstream surface, the forest crown line and the like of the residual dam body by adopting the fractal dimension parameters, constructing morphological parameters of the repaired dam body, ensuring that the repaired dam body is consistent with the original dam body and the surrounding landscape in the aspects of symmetry, rhythm and the like, realizing harmony of the repaired dam body and the surrounding landscape, and forming visual unity.

(7) Greening of native plant

The investigation result of the residual dam plant community of the sparkling sea shows that the top dominant species of the dam plant community is Chinese pine, the top-sub-layer arbor species comprise juniper, yew, white birch, aspen and the like, the shrub species comprise salix delavayi, rose, mountain ash, rhododendron, berberis chuanensis and the like, the herbaceous plants are distributed sporadically, and the diversity of the whole community is high. In order to not introduce foreign species, plants such as Chinese pine, juniper, salix sinomontana, barberry, rhododendron and the like flushed out from the upstream and downstream of the spark dam body due to dam body collapse, debris flow and the like are collected in the project implementation process, shrub species such as almond, spruce, oriental paperbush and the like which are plant materials in the trenches of the nine villages are replanted, soil on the surface layer of the residual dam body is collected by a soil seed bank method, the ground cover plant of the dam body is recovered by covering soil, and the species for repairing the dam body are all native species.

The plant species and number for dam recovery applications are shown in table 1:

TABLE 1 details of indigenous plants used for greening

The dam crest landscape is based on fractal art as a theoretical basis, corresponding drawings are designed by combining the original form, landform and plant configuration condition of the residual dam body, micro-topography is built, the water flow direction is controlled by the topography, the water quantity is controlled by controlling the height and the form of a water inlet, and finally the waterfall stacking landscape is formed.

In addition, when the spark sea conservation dam is built, the residual dam body still needs to be reinforced, and the stability and the safety of the residual dam body are improved. The construction adopts the step dam face plate to reinforce the residual dam body, but the step face plate is too artificial and cannot enter the surrounding natural environment, thus destroying the landscape effect of the peripheral embankment. Through adopting the mode that stone is piled up, the netting is pour, the withered wood is decorated to carry out the view to the step panel and clear up, reach the integration with the surrounding environment.

The effect before and after the spark-sea repair is shown in fig. 4 to 9. The result shows that the repairing method provided by the embodiment effectively repairs the spark sea dam body and maintains the authenticity and integrity of the spark sea spot before the earthquake.

In summary, the damaged calcium bloom dam body and the landscape to be repaired are subjected to vibroflotation gravel fixation, sticky rice mortar dam construction, bamboo anchor reinforced slope protection, ecological material seam plugging, fractal landscape design and native plant greening at least in sequence, so that the damaged calcium bloom geology can be effectively repaired, the corresponding landscape is recovered, and the method is small in manual intervention and small in environmental influence.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A damaged calcium-bearing dam body and a landscape ecological restoration method are characterized by at least comprising the following steps: sequentially carrying out vibroflotation gravel fixation, sticky rice mortar dam construction, bamboo anchor reinforced slope protection, ecological material seam plugging, fractal landscape design and native plant greening on a damaged calcium dam body to be repaired and a landscape;

the sticky rice mortar damming is carried out by adopting modified sticky rice mortar to cast stone blocks for damming;

the preparation raw materials of the modified glutinous rice mortar comprise 0.4-0.5 part of glutinous rice glue, 0.1-0.2 part of lime, 0.10-0.22 part of gypsum, 0.015-0.02 part of water repellent and 0.075-0.225 part of plant fiber;

the bamboo anchor reinforced rib is composed of a bamboo anchor rod with a hollow structure and modified glutinous rice mortar poured into the hollow structure.

2. The damaged calcium-dam and landscape ecological restoration method according to claim 1, further comprising designing a restoration model to simulate obtaining a preset restoration state of the damaged calcium-dam geology and data parameters under the preset restoration state before restoration.

3. The damaged calcium-dam body and landscape ecological restoration method according to claim 2, wherein the vibroflotation gravel fixing base comprises: adopt vibroflotation gravel pile to consolidate the ground in order to reach predetermined ground bearing capacity.

4. The damaged calcium-bearing dam body and landscape ecological restoration method according to claim 3, wherein in the vibroflotation gravel-consolidating process, the vibroflotation gravel piles are arranged in a plum blossom shape.

5. The damaged calcium-dam body and landscape ecological restoration method according to claim 4, wherein the distance between two adjacent vibro-replacement stone piles is 1.5-2 m.

6. The damaged calcium dam and landscape ecological restoration method according to claim 1, wherein the modified glutinous rice mortar has a fluidity of 120-250mm and a setting time of 90-360 min.

7. The damaged calcium-bearing dam and landscape ecological restoration method according to claim 6, wherein the bamboo anchor reinforced protection slope is formed by making a hole in the slope to be protected, inserting the bamboo anchor rod into the hole, and pouring the glutinous rice mortar into the hollow area of the bamboo anchor rod.

8. The damaged calcium hua dam body and the landscape ecological restoration method according to claim 7, wherein the strain fluctuation of the bamboo anchor rod is not more than 800 μ epsilon after the bamboo anchor reinforced protection slope is completed.

9. The damaged calcium-dam body and landscape ecological restoration method according to claim 6, wherein the ecological material caulking comprises: grouting, reinforcing and plugging cracks on the surface of the dam body and in the dam body;

wherein grouting reinforcement and seam plugging are carried out by adopting an ecological material, and the ecological material is the modified glutinous rice mortar.

10. The damaged calcium-dam body and landscape ecological restoration method according to claim 2, wherein the fractal landscape design comprises: and (3) designing the morphological parameters of the damaged calcium-blooming dam body and the repaired landscape on the surface of the dam body so that the repaired calcium-blooming dam body is basically consistent with the original dam body and the peripheral landscape before damage.

11. The damaged calcium-blooming dam and landscape ecological restoration method according to claim 10, wherein the characteristics related to the morphological parameters include dam upstream, dam outlet and forest crown line.

12. The damaged calcium-filled dam and the method for restoring landscape ecology of claim 1, wherein the plants planted in the native plant greening are local plants that do not affect the diversity of native species.