Method for simulating dam break process caused by seepage failure of tailing pond dam body

Abstract

A method for simulating a dam break process caused by seepage failure of a tailing pond dam body comprises the steps that firstly, two-dimensional seepage stability analysis is conducted on a tailingdam according to dam body material mechanics parameters, upstream and downstream water levels and other information, and the position of a seepage channel is preliminarily planned; constructing a tailing dam seepage failure breach development numerical model, simulating a seepage failure breach development process and determining a critical condition of seepage channel collapse; and finally, simulating the overtopping outburst process after collapse of the permeation channel by utilizing fluid mechanics analysis software, so as to realize dynamic simulation of the permeation failure process ofthe whole tailing pond dam body. The method has the advantages of being high in pertinence, low in cost, easy to operate, good in result visualization and the like; by means of the method, the specific situation of dam break downstream disaster caused by seepage failure of the tailing pond dam body can be obtained, a basis is provided for government decision departments and related design units to scientifically and reasonably formulate tailing pond burst emergency plans and rescue and remedial measures, and therefore losses caused by tailing pond burst are reduced, and accident risks are reduced.

Description

technical field [0001] The invention relates to a method for simulating the dam break process of a tailings pond, in particular to a method for simulating the dam break process caused by the seepage damage of the dam body of the tailings pond. Background technique [0002] The tailings pond is a special place used in mining engineering to store the tailings discharged from the concentrator. Since the tailings contain various chemical agents and various heavy metal components remaining during mineral processing, once the tailings pond breaks, it will inevitably become a major source of environmental pollution, posing a huge threat to the safety of life and property of downstream residents and the ecological environment. [0003] The tailings dam is one of the key structures of the tailings pond. It is composed of the initial dam and the accumulation dam, and its function is to block and deposit the tailings in the tailings pond. Due to the special function of the tailings da...

AI Technical Summary

Problems solved by technology

However, the dam failure caused by the seepage damage of the dam body is shorter, more sudden and more harmful than the flood damage.

If the simulation method of dam failure caused by the flooding of the tailings pond is used to study the dam failure mode caused by the seepage damage of the dam body, it may lead to inaccurate prediction of the disaster situation downstream of the tailings pond and cause major safety hazards

Images