A Model for Optimizing Soil Bank Operation

• Main Authors: Chun-Shan Chien, 簡君珊
• Other Authors: Yusin Lee
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/86727393391258104672

碩士 === 國立成功大學 === 土木工程學系 === 87 === Dumping of waste soil from construction sites have been a major threat to the environment in Taiwan. One efficient solution to this problem is to recycle the waste soil for land fills, as doing so can cut the amount of both wasted and borrowed soil. However, all construction projects are subject to tight schedules and an array of uncertainty. Therefore, the difficulty in synchronizing the demand and supply of soil mass becomes a major hurdle to soil recycling. One way to overcome this difficulty is to use soil banks as a buffer, so that there is no need to fully synchronize the projects involved. In Taiwan, land space is a scarce resource, therefore it is desired that such soil banks be managed optimally. The purpose of this research is to develop a mathematical model to solve for an optimal solution to soil bank management. Considered factors include many-to-many demand-supply matchings as well as storage space allocation. The proposed model, which is linear, is a multi-layer time-space network with side constraints. The space dimension of the model corresponds to the borrow pits, construction sites, soil banks, and dump sites, each in turn correspond to one network layer. Flow in the network corresponds to earth mass, and different earth types are modeled as separate flow commodities. Computational testing yields promising results.