Analyze On Navigation Safety Of Cargo Ship Transporting Heavy Cargo In Lancang River

The Lancang river and Mekong river connects the China's southwest with Asia's southeast, Lancang river and Mekong river shipping plays a huge role in the development of regional economic construction. Through the exploration and development in recent ten years, the shipping conditions of Lancang river have been improved a lot. But the waterway of Lancang river is still bad. Compared with other domestic inland waterway, there is a big gap. Since Lancang river belongs to the typical mountainous rivers. The waterway equipped with rapid flow, large falling gradient and many bends. These characteristics serious threat the safety of the ship sailing.This paper based on the transportation of great equipment for the river hydroelectric station, discusses the hidden dangers when ships navigate in some wicked waterway. This article mainly studies the force that ship has suffered in the sinuous waterway with falling gradient. The flow condition is the most complex in this kind of waterway and it is also the most prone to happen accidents. So, selecting this waterway for analysis and study is very representative. In addition, this paper mainly analyzes the cargo ship for awkward and lengthy cargo, compared to other transport ships, such ships are more difficult to control, the safety requirements for navigation is higher. So, this research and analysis can be extended to other similar ships, as a theoretically guiding.In view of the present shipping research for Lancang river mainly focused on the hydraulic power index, rather than focused on the extraneous force that ship suffered. Based on the above situation, this article adopted the mechanics method, analyzed the extraneous force in different waterway conditions, and according to the ships'indicators to evaluate the safety of ship sailing.This paper respectively researched the lateral force and longitudinal force that ship has suffered in the sinuous waterway with falling gradient. The longitudinal force manifested as the sailing resistance and the lateral force manifested as the heel moment of force. Calculating the lateral force and longitudinal force under different flow condition and according to the result to judge whether the sailing is safety. Through the computation, we can make out the hydraulic power index which can guarantee the safety of the ship's sailing as well as puts forward some relevant suggestions for the ship design and shipping. In addition, this paper also researched the bandaging for awkward and lengthy cargo, and based on the actual cargo puts forward an appropriate bandaging scheme.The research of this paper mainly about the cargo ship transporting great goods, but this research results can be applied to other similar ships. It provides a theoretical analysis and guidance for the lancang river shipping.