Garden Engineering is a part of modern urban construction, which can promote the harmonious development between human and nature. Fifteen of our country's planning objectives is to achieve new progress in the construction of an ecological civilization, with a clear focus on promoting green development and promoting the harmonious coexistence of mankind and nature. Adhere to the concept of green development, green water and Green Mountains are mountains of gold and silver. Environmental Protection and Urban Ecology have been taken seriously, and great efforts have been made to develop modern cities, increase the humanistic feelings of cities, and make human beings closer to nature. In order to improve the construction quality and benefit of landscape engineering, landscape professional and technical personnel should actively study the modern characteristic new technology of landscape engineering and apply it to the current landscape engineering. By means of professional wisdom to the current landscape technology and other innovation and transformation, and then on this basis to give the landscape ornamental and comfort. The development of landscape architecture is becoming more and more perfect, from the spiritual enjoyment to the unity with the material enjoyment, more emphasis on the unity of nature and man, the harmonious coexistence between man and nature. Based on the practical work, this paper first introduces the application principle of new technology in modern garden engineering, then analyzes and discusses its application.
- introduction
The new construction technology of landscape engineering plays an important role in urban construction, which can enhance the city image, beautify the urban environment and construct the scenic area with artistic, scientific and ecological features. To integrate and optimize the limited natural resources, to provide the people living around with places of recreation, entertainment, close to nature, and to improve the ecological environment of life, so that human beings are closer to nature and love nature, in line with the overall strategic layout of modern energy conservation and emission reduction. Once completed, landscape engineering will benefit mankind for a long time, balance the regional ecosystem, improve people's living environment, improve the quality of life.
- Principles of application of new techniques in landscape engineering
2.1 make full use of advantageous resources and combine local characteristics with development trends
Plant resources are rich and diverse, different types of collocation, different configuration, will create different landscape effects. We should take full advantage of the rich and diverse plant resources, combine local characteristics and make long-term plans, efforts to build a suitable total, reasonable configuration, species diversity and beautiful landscape of leisure and tourism sites and green ecological system.
2.2 reasonable planning in accordance with the natural and geographical environment
Different regions and cities have different natural and geographical environments, which must be fully considered in landscape planning. Complex and diverse climate conditions, forming a different ecological environment. In the planning of landscape green space, we should adapt to the local conditions and trees according to the local natural and geographical environment, and not blindly pursue the evergreen of the four seasons and shape the beauty of seasonal form. Local native tree species mainly, mixed needle and broad, foliage, flower and shape view reasonable combination, thus scientific and effective configuration of garden greening.
The application of new technology of landscape construction in landscape engineering
3.1 permeable surface technology
Large landscaping projects include roads for large vehicles such as cars, bike path and footpaths made of lightweight permeable bricks for recreational use. In the construction of road surface in landscape engineering, the permeable brick with holes is selected and grass is planted in the holes to enlarge the green area. If the parking lot in the garden is constructed with concrete material, the ground of this material is not easy to infiltrate water, which is contrary to the basic idea of landscaping. Today, permeable bricks and Chloroplastida are used for construction, and drainage ditches are dug around car parks and tall shrubs are planted in the ditches to meet the needs and aesthetics of landscaped pavements. When there is continuous rain weather, the water will flow along the drainage ditch, or infiltrate the soil, be absorbed by plants. Or the installation of diversion pipes to facilitate groundwater confluence along the diversion pipes to storage ponds, in order to facilitate the later purification of rainwater. The diversion trough can also be used to replace the underground diversion pipe and combine with the ground plants to make use of the purification function of the ground plants and the ability to make full use of the water resources, while ensuring the plant water is sufficient, it can also play an effective role in saving water resources purification.
3.2 high slope protection technology
High slope with artificial accumulation and natural high slope are often seen in landscape engineering construction, so high slope protection technology is needed in general. During the design stage, the investigation should be carried out in the light of the ecological conditions and geographical environment of the project site, namely the height, slope and soil and water environment of the slope, according to the actual distribution of groundwater level and the structure, shape and height of rock mass, the accurate measurement is carried out, and a scheme suitable for slope greening construction is finally determined. In the construction of high slope with artificial accumulation body, the bearing strength of slope should be guaranteed to the maximum, the anti-slide performance of slope surface should be improved, the stability of slope should be guaranteed, and the loose slide of slope soil and soil erosion should be prevented, it is convenient for slope protection and greening in the later stage. In the construction, slope protection is generally divided into vegetation construction protection, brick closed protection of two ways. The protection of vegetation should be combined with the local soil conditions. The vegetation itself can enhance the soil strength, effectively control the water resources and increase the fertility of the land, the ecological development should be paid attention to while the slope intensity was increased. The brick slope protection method is suitable for the places where the conditions are difficult, such as the slope beside the highway, the desert area and so on. The use of permeable hoses is also an effective way of slope protection. The water permeable hose is composed of steel wire spring and pipe wall. It has the function of water permeability and filtration. Through the capillary principle, the fiber fully absorbs the water permeated in the soil and rock, and flows into the pipe when it reaches saturation? To achieve the desired drainage effect, to protect the slope and prevent soil erosion?
3.3 synthetic geotextile technology
Three-dimensional mesh pad and pervious hose are a new kind of synthetic geotechnical material. Three-dimensional net mat, also known as three-dimensional soil-fixing net mat, three-dimensional vegetation net, it can effectively solve the problem of soil erosion, play a role in soil consolidation. In the construction of landscape engineering, some fine sand and stone soil should be filled in the gap of the 3d Net, and the roots of the vegetation should be able to pass through the protective net to make the plants have a comfortable and free growing environment. With the gradual growth of vegetation, roots will be closely integrated with the three-dimensional vegetation network, play a wind-proof soil reinforcement effect. In landscape engineering, under the relatively arid geological conditions, the application of three-dimensional vegetation network can effectively achieve the effect of greening the environment. Another kind of pervious hose has the function of filtering, pervious and good drainage effect. It can effectively solve and improve the problems of soil erosion, soil and fertilizer erosion, slope green land instability, etc. .
3.4 rainwater recovery and purification technology
Rainwater recovery and purification technology is a new type of modern gardening technology, which mainly uses rainwater to irrigate plants, solve the problem of water shortage, and purify the environment. With the development of science, technology and economy in China, the shortage of water resources is becoming more and more serious. Landscape engineering needs a large amount of water resources, artificial lakes, water storage ponds need water, plants, animals, human life also need water, the effective recovery and reuse of rainwater can reduce the amount of water used in landscape engineering and improve the utilization rate of water resources. In the technology of rainwater recovery and purification, rainwater is collected by artificial lakes, water storage ponds and drainage systems around plants so that more rainwater can be absorbed directly by plants to purify the environment? Using this technology to recycle rainwater can reduce the waste of water resources, slow down the pollution of rainwater to the ground, improve the application ability of rainwater, and purify the environment on the premise of ensuring environmental cleanliness.
3.5 new garden irrigation technology
In the process of garden construction and maintenance, better irrigation technology is needed to ensure the healthy growth of plants. Traditional irrigation methods are a serious waste of water resources. In order to make further rational use of water resources and improve the utilization rate of water resources, micro-irrigation technology or intelligent irrigation system are used to irrigate plants in landscape engineering to save water resources and ensure the natural growth of plants. Micro-irrigation technology is the use of small sprinklers to control the amount of irrigation water, less water to the soil, the roots of plants and the surrounding soil gradually make it moist, so that garden plants slowly absorb water, also can reduce the amount of fertilizer used, micro-irrigation technology is divided into sprinkler irrigation and drip irrigation in two ways. Intelligent irrigation system is to make full use of Internet technology, sensor technology, automatic control technology to achieve unmanned irrigation, to provide water for plants. The system can monitor plant growth and soil water content in real time, control irrigation time and water flow automatically, so as to make full use of and save water resources, and reduce the labor force of garden workers. There are buried sprinklers and above-ground sprinkler, buried sprinkler has the advantages of easy use and beautiful form of spraying water, does not hinder the maintenance of green space, do not affect other landscape, convenient green space management. The above-ground sprinkler is divided into landscape type and rocker arm type. Landscape Sprinkler is suitable for lawn, rockery and other landscape sprinkler, can spray out a variety of beautiful water form, ornament garden landscape effect. The advantage of the rocker-arm sprinkler is that the spraying radius, elevation angle and angle can be adjusted at will. Micro-irrigation technology has strong water-saving and energy-saving advantages, easy to operate, strong adaptability, for the permeability of soil change irrigation speed, irrigation uniformity, achieve water and fertilizer synchronization, according to the plant growth stage, water demand adjustment tank water, more conducive to plant growth.
3.6 intumescent sealant technology
The phenomenon of crack and water leakage often occurs in the construction of garden engineering. The new inorganic solvent expansion water-stop glue without shaped paste is usually used to treat it. The swelling water-stop adhesive is a kind of paste of amorphous and inorganic solvent expanded by water, which is composed of polyurethane materials and has very special physical properties: one is single component amorphous, the other is compact structure, third, the expansion of water. According to the characteristics of the material, the technology of expansion sealing glue is mainly used to fill pipes, steel bars and structural joints which are prone to leakage, and can effectively fill these cracks to achieve water sealing effect. The most unique advantage of this technology is that it has a dual sealing and sealing effect. In practical application, if water flows into the crevices, it can fill the crevices through the characteristics of water expansion and the elasticity of rubber, thus playing an ideal effect of sealing and filling, and can be applied to landscape engineering, the required sealing and waterproofing is further enhanced. In the process of seepage water treatment in garden engineering, the expansive water-sealing glue technology has a very wide application value.
In a word, in order to make landscape engineering better serve the social progress and urban development, we need to constantly sum up the problems encountered in the actual work. To promote the innovation and application of new technology in landscape engineering construction, to make rational use of resources, to create conditions for technological innovation, to create conditions for technological innovation from the overall layout of design; To stimulate technological innovation from the angle of satisfying people's aesthetic needs. In order to meet the changing aesthetic standards of people, we should give full play to the overall effect of landscape engineering and improve the construction quality of landscape engineering, to make a greater contribution to the creation of a more livable urban environment.
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