Storage Theory-based Research Of Topsoil Optimization In Land Reclamation

With the rapid development of our national economy, the demand for mineral resources continues to increase. However, the development of mineral resources will destroy land resources, particularly topsoil resources, and this is disobeying with the "stick to 18 million mu of primary arable-land red line". Topsoil is a valuable resource because it is difficult to produce in short time. Actually, the formation each of 1cm thick surface soil, need 300 - 400 years. Therefore, we must take a series of effective methods to ensure that the primary arable-land was not reduced qualitatively and quantitatively. Land reclamation is one of the ability to effectively address land conflicts in the measure.According to Ministry of Land No. 81, 2007 which indicated that where we damaged in digging, caving, press accounts, polluting on the land, we should protected in land reclamation projects. Topsoil resource is one of the most important resources in the land reclamation; the topsoil stripped and covered the land reclamation program embodied in the land reclamation works in the chapters of design and engineering calculation. But nowadays most programs and coverage for the stripping of topsoil is only a qualitative illustration, but no quantitative study. The estimated investment in land reclamation would have no reflects in measured chapters. This has resulted in the topsoil stripped and covered projects for lack of scientific guidance relative unnecessary costs arising.Productivity growth and cost control are the most important source of profit. We should remain the capacity stable or increase, every company should focus on how to effectively reduce the cost. Meanwhile, mining enterprises are also facing similar problems. We can not arbitrarily approach to increase productivity to increase profits, because there is some capacity plans. Therefore, in order to obtain more profits, we must start to save money from the perspective of cost control.With the current situation about topsoil in land reclamation, the research introduces the Storage Theory. We treat the topsoil as goods so as to do the quantitative analysis on stripping and stockpiling processes: combine with land reclamation projects, we select the grassland mining area and hills of metal mining example, firstly determine the costs of surface storage; transportation ; equipment and installation of mining ,etc. Then we use deterministic-model (not allowed out of stock, production will take some additional time), calculating the optimal production cycle of topsoil resources; topsoil supply optimal quantities of economic rationality, the best time to stop topsoil supply point.This not only achieving an accurate grasp of the situation of storage, surface storage to lower costs and improve the profits of mining enterprises, but also to intensive use of land conservation realize economic, social and ecological benefits of maximizing the realization of scientific research for national service.