Research On Lock Capacity On The Minjiang River Downstream

Minjiang River is one of the main "two vertical and one horizontal inland waterway in my province, it inward connects Chengdu Plain, southern Sichuan and other major economically developed regions, outward communicates marine by the Yangtze River, but also contacts the surrounding provinces and the Yangtze River region. The downstream Leshan to Yibin, long 162km, with drainage of the upper, lower remediation, fundamentally improved the navigation conditions, will drive the economic development of river basin and hinterland, and benefit parties. To study the lock capacity of Minjiang River and the scale of navigation structures has an important practical significance on the layout of industries along the river and integrated transport. So carried out this study is timely and necessary.This thesis extensive search academic literature at home and abroad, to understand current research trends and the levels, based on the technical and economic data of existing planning documents, first analyze and determine the basic parameters and the main factors and their values of the lock capacity, then calculate and analyze the specific scale (280×23×4.5m)single-lines locks capacity recommended by< Minjiang River Navigation Lock Project Planning and Project Pre-feasibility Study Report>, also calculate the double-line locks capacity. With cargo and ship traffic growing, the lock delays problem gradually highlighted, and also has an impact on the lock capacity, for the actual situation of the ships through lock on the Minjiang River, this thesis established a particular scale mathematical model and proposed a recursive algorithm and the non-recursive algorithm to solve the knapsack problem, effectively solved the practical problem of the ships through lock on the Minjiang River downstream. To face the large amount of interconnected uncertain discrete event systems, this thesis choosed to build the simulation process and framework, developed a simulation software, initially explored the related random factors to the impact on the rules of lock capacity. It not only dynamically analyzed the lock operations and service levels, but also provided reference of the amendment of the calculation, and finally raised some views of the Minjiang River lock scale (scale and line number) through the simulation.