How to build our city into an ecological, low-carbon, livable and safe garden city is a major issue in the current urban afforestation community. But in the environment in which people live, there are always many big trees, old trees, old trees, and unhealthy trees. Because of various reasons, the tree vigor is weak, the trunk is decayed, the roots are damaged, and the tree is tilted. In case of strong winds, heavy rain, and other abnormal weather It is prone to collapsed trunks and lodging of tree trunks, thereby endangering the threat of building facilities or the safety of the crowd. How to correctly assess the risk level of trees, and adopt appropriate conservation and management measures based on trees and local conditions, will not only help the ecological, landscape and social benefits of trees, but also ensure that trees will not pose a threat to residents, facilities and property. B-scanning trees are very common in recent years and help us to detect trees.
In general, the risk level of a tree varies according to the severity of its failure, the crisis target, its location, and the fault tree specifications. For example, when other conditions are the same, a serious failure of trees and healthy trees, crisis personal safety and The trees of the crisis facility property, the trees in the commercial center and the woodland in the field, the risk caused by the large-sized fault tree and the small tree are different. Tree risk assessment refers to assessing and assessing the severity of tree defects in the target area, and recommending and taking corrective measures before the tree poses risks. Quantitative assessment of tree risk levels, determination of tree risk ratings, and conclusion that correction should be implemented Measures the priority of trees and take corrective measures in order of priority to ensure the safety of people and property in an economical and rapid manner.
In recent years, foreign countries have developed and used acoustic transmission time technology (detecting the internal decay of trees. By judging the time required for the sound waves to travel from one side of the trunk to the other, if there are damaged parts, then the sound will pass through more time than The time spent on the damage site is long.For researchers in our country, while learning and digesting the theory and technology of non-destructive testing abroad, promotion and application is a long way to go, and it is an important way to build a beautiful township. 1. The application and development of the tree B ultrasonic instrument is the best way to detect ancient trees.
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