Maintenance management of tailings pond and tailings dam I. Task requirements often maintain the necessary storage capacity of the tailings pond, ensure the accumulation of tailings sand and the clarification of tailings water, and prevent the occurrence of dams, collapses, subsidence accidents and their hazards . Second, the tailings ponds should be based on the topographical conditions, storage capacity curve, tailings size characteristics, design drawings, etc. to make the tailings storage operation design and operation plan, generally the following storage methods can be adopted. The tailings pond is large in area, and the tailings rises slowly. It can be alternately stacked in stages to reduce evaporation leakage or make an accident reserve. For the tailings reservoir with dam body structure, the tailings should be uniformly deposited and dispersed along the inner slope of the dam, and the tailings sand surface should be kept exposed to a certain distance (this distance should be determined according to production characteristics and related factors) to keep the dam stable. Water waves impact and reduce leakage. And strictly control the water level, and often maintain a safe elevation of the water surface from the top of the dam to prevent accidents caused by flooding. The tailings reservoir of the damless structure (Note: refers to the natural closed depression), the tailings reservoir is uniformly dispersed and deposited along the periphery of the reservoir, and the water level is strictly controlled, and the sand surface is often kept at a certain distance from the water surface (this distance should be based on production characteristics and related Factor determination) to increase the thickness of the soil layer around the reservoir and reduce the hidden accidents of the sinkhole. The fixed person shall be assigned to check and maintain according to the post operation responsibility system. If the water level rises suddenly or other accidents are found, measures shall be taken immediately and reported to the dispatching room. Lighting communication tools should be set up, and a ruler should be installed to check the water level and tailings rising speed in order to grasp the deposition of tailings sand and make full use of the effective volume of the tailings pond. Periodically (quarterly) determine the particle size distribution characteristics of the tailings deposits in the reservoir and the distribution status of the suspensions, and record them to indicate the location. When there are more suspensions, measures should be taken to protect the safety of the tailings dam. The water level gauge reading in the library should be linked to the absolute elevation and periodically checked with the instrument. The water level is observed at least once a day and recorded.
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