Relationship between tertiary reserves and mining steps

According to the preparation degree of mining, the ore reserves can be divided into three levels, namely, exploiting reserves, mining reserves and reserve reserves. These three reserves are called tertiary reserves.

(1) Exploiting reserves
Through the tunneling and opening of the roadway, a certain transportation, ventilation and drainage system has been formed. The deposits in the mine control area are called exploiting minerals, as shown in the fourth stage.

(2) Acquisition of reserves
It is part of the exploitation of minerals. Where the mining area or the mining wall completes the mining quantity specified in the mining method, the reserves in these mining areas or mine walls are called mining reserves.

(3) Reserves
It is part of the acquisition reserve. The reserves of the cutting engineering quantity specified in the mining method in the mining area or the mining wall are called reserve reserves. As shown in Figure 3-1-8, the first stage and the second part of the second stage have completed the cutting work, which is the reserve.

In the three steps of mining the above-mentioned deposits, in the initial stage of mining, each mining step is carried out in sequence, that is, the required three-level reserves can be put into production according to the infrastructure construction schedule; in the normal production period (that is, after the production is completed), the implementation should be implemented. The principle of "excavating and cultivating first." It is generally necessary to ensure the indicators specified by the third-level reserves, otherwise mining imbalances will occur, causing mine production to be chaotic and passive. Therefore, we must always pay attention to properly arrange the development, mining, and recovery work. It is necessary to follow the principle of pioneering the advance and adopting the advanced mining. Only in this way can the production of the mine be sustained, stable and balanced. This is because development, mining and cutting reflect the degree of readiness for mining. The advanced relationship between the above three steps, the degree of preparation is usually expressed by the mining time required for the three-level ore provided by the tunneling, mining, and mining roadway. In general, mines should have more than three years of mining capacity, about one year of mining and mining, and about six months of reserve.