The Theoretic And Experimental Research Of The Method For Applying Twist-Roller To Cut And Collect Deep-Sea Collbat Crust

Ocean, which covered our earth almost 71%, was the most valued wealth and resource treasury of human beings given by the nature. Today exploiting and using the ocean resources is attaching more and more important to the world, and has been taken as a basic national policy by many countries; some famous politicians and economists all predicted: "21 century will be the age of ocean economy", oceanic mining was the foreland of ocean high-tech and the pioneer-spot for exploiting resources.Deep-sea cobalt enriching crust is a polymetallic mineral widely spreaded at flat seamounts ranged from 5 hundred to 3 thousand meters, which was abundant with Cobalt, Argentine, Copper, Gold, Platinum, Antimony, Lanthanum and so on, and the gross of a lot of elements in it exceed it of the land. Along with land mineral resources used up by human beings and we understood the ocean more and more, Oceanic cobalt crust resource has been a commercial foreground strategically resource in 21 century which was focused the international attention upon. Based on some experts' forecast, in the middle of this century cobalt crust 's commercial and comical mining would be possible.Because of our capability of exploiting and developing the ocean was not as well as the developed countries, and our investment was rather little, carrying out a lot of practical model examinations which need much money in ocean would be out of the question, we must taking use of the technology of modem simulation, simulating all the course of deep sea resources exploiting technology and the key equipment, improving the research efficiency and pace of deep sea resources exploiting and development technology, reducing the risk and depressing the investment in deep sea mining.The dissertation was just at this position and condition, on the bases of taking technological demonstration of cobalt crust collection in deep sea and the analysis of it's feasibility, looking for a economical and efficient method or technological route to collect the cobalt-enriching crust in deep sea. On the bases of consulting a lot of references, Author analyzed the status and the developing trend in the future of the cobalt crust resources research and development, proved the necessary and immanency to start up deep-sea cobalt-enriching crust exploiting and research; taking use of the experiences and achievements in exploiting ocean manganese nodule, author successfully applied the methods and theories of modern coal mining into deep-sea cobalt-enriching crust exploiting and research, contrasted and thought that it was not only a feasible scenario, but also the most economical and maybe be the most optimal technological scheme to exploit cobalt crust at present condition, applying "Seabed Caterpillertype Mining Vehicle Provided Its Own Propulsion( consisting of a series of spiral drum mining heads)-Hydraulic Suction System-Pipeline Lift System".First of all the author in the view of rock's cracked principle, analyzed the cracked principle of cobalt crust applying spiral drum type cutting head, built up it's cutter's kinetic equation and thought, on the course of spiral drum cutting cobalt crust,the type of fragment mould be a part of "reaping ", and concluded the approximately calculate equation for it's average thickness; Then author according to the especial working condition of exploiting cobalt crust in deep sea, analyzed the calculate method of the cutter's average load of spiral drum, and the reason of choosing the parameters in designing, built up the mathematics model of the spiral drum's average energy wasting.At the same time the author according to the fragment characteristic equation of cobalt crust cracked by spiral roller, analyzed and calculated the fragment percent of cobalt crust, In order to overcome the shortage that it could not directly forecast the cutting effect in the spiral drum traditional design method, author especially wrote some computer programs to protract the cutter arrangement and analyze cutting chart, promoted the level and shorted the cycle of de...