At present, there are many types of mining methods commonly used in mining, and how to choose a suitable mining method has become a top priority for mining companies. In this article, we will first introduce you to a mining method - the comprehensive mining method. The comprehensive mining method is applicable to the fact that the surrounding rock of the mining ore is relatively stable, and the thickness of the ore body is less than 5-7m to the gently inclined ore body; it is also suitable for the undulation of the floor of the mining body or the variation of the thickness of the ore body and the uneven taste of the ore. The body of the ore. 1. General Comprehensive Mining Law (also known as the Comprehensive Mining Law) (1) Generally, the ore should be medium and stable; the exposed area of ​​the roof should be greater than (2) the inclination of the ore body is ≤30° (3) the thickness of the ore body is below 5-7m, and the ore body of 1.5-3.0m is mined in most domestic mines. (4) The general ore body is relatively stable (5) The method retains the pillars in the stope, preferably in lean ore. 2. Mining and mining comprehensive mining method (1) ore and a solid stone or slate roof solid medium; ore not bonded, unnatural (2) slowly to the ore body is inclined by the inclination angle (i.e., 26 ° -55 °), is inclined to the main ore body (3 The thickness is from thin to medium-thickness ore body. The thin ore body is the most suitable mining method. It is suitable for the horizontal and gentle inclined thin ore body of mining ore and roof rock. The thickness is less than 3-4m. Mining ore bodies with large or large undulations and uneven distribution of ore grades need to be encrypted. The top plate is not stable, and it is not allowed to have a large exposed area. The comprehensive mining method is divided according to the direction in which the working face is propelled: three kinds of recovery methods: propulsion along the strike, propulsion along the slope and propulsion. Advancing along the strike is suitable for ore bodies with an inclination of less than 30°. Ore bodies with an inclination of more than 30° are generally propelled by reverse inclination, and it is rarely used to advance along the slope. The characteristics of the comprehensive mining method are: in the stage (or panel), the ore body is divided into ore blocks, and regular and irregular pillars are reserved in the ore blocks, or the ore blocks are not divided. Leave irregular pillars. When the top plate is not stable, the nuggets can be sorted along the strike division. The working face is arranged in a stepped or straight shape and can be advanced along the strike, inclined or reverse. The advantages of the comprehensive mining method are: the amount of mining work is small; the mining process is simple; the ventilation is good; the conditions of irregular shape and inclination of the ore body can be applied, and the flexibility is large. The disadvantage is that the exposed area of ​​the top plate is large; if the mining height is more than 3m, it is difficult to inspect the top plate; when the column is left for a long time, the ore loss is large. The future development direction is: small ore-free equipment can be used for mining. Each mine block only mines one ore mine to reduce the workload and reduce manual labor; the goaf is filled with tailings to prevent or delay the movement of the rock. Currently, a comprehensive mining law in our country ferrous metals, non-ferrous metals, chemical mining has been widely used. What is Clear Stretch Film?
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