Study On Dehydration Scheme Of Whole Tailings In A Copper Mine

Mining not only brings a wealth of mineral resources to the society, but also inevitably brings many security problems to the local environment, such as the accumulation of backfilling and gob collapse. With tailings backfilling goaf can improve the surface environment, and can control the ground pressure, tailings disposal in mined out area is processing mining empty area preferred. With the underground mining depth is more and more big, mined out area more and more, and people to the environment request more and more high, people are forced to use full tailing hydraulic filling area, But the entire tails granularity is thin, the water retention property is good, causes the entire tails backfill body dehydration speed to be slow, creates spatial district magistrate the time to have the massive pondings, fills the body the stability to be bad, fills the body knot to go against with difficulty, security hidden dangers and so on depletion region roof long time exposition.In view of the entire tails backfill body dehydration speed slow question, at present, speeds up the backfill body dehydration speed the method, uses the method has method dehydrations and so on dehydrated tube, flocculant, the majority mines use the cost lower dehydration party concerned law dehydration, But the mine general according to experience to install, it is inefficient and a waste of resources. The factors affecting the removal effect of pipe dewatering is mainly dewatering pipes installation spacing and diameter. This paper will be to remove the installation and removal of pipe spacing to the diameter of pipe is discussed:1. Analyzes its penetration coefficient, the gradation, the density to the scarlet mountain copper mine entire tails test specimen test and so on the basic parameter, and carries on the analysis to the entire tails aquosity as well as the influence backfill body dehydration factor.2. According to the theory of settlement, two-phase flow theory to establish fine grained tailings backfill porosity model, calculation of arbitrary size within the backfill porosity is to be moved, according to the results select the spacing dehydration casting pipes;3. Flows the theory according to the well and so on, through the dehydrated tube in the backfill body interior dehydration radius of influence, the establishment installs the dehydrated tube caliber the model.4. In order to confirm the choice dehydration tube to install the spacing and the caliber choice method accuracy, speeds up the backfill body dehydration speed, enhances the mine safety coefficient, carries on the modelling in the room, and spacing parameters and so on chooses the best dehydrated tube caliber, installs.5 According to the characteristics of a Panel, use of software, and numerical models to establish this Panel filling body dehydration, simulation and analysis when adopting a different pitch, diameter, the changing pattern of dewatering effect, and choose the best dehydrated tube spacing and diameter.