1 ) Deposit geological conditions The geological conditions of the deposit play a controlling role in the selection of mining methods. Generally, mines can select one or two mining methods based on the ore body's occurrence, ore and surrounding rock physical and mechanical properties. The main geological conditions affecting the choice of mining methods include: (1) The physical and mechanical properties of ore and surrounding rock, especially the stability of ore and surrounding rock; (2) Dip angle and thickness of ore body: The dip angle of the ore body mainly affects the mode of operation of the ore in the stope; the thickness of the ore body mainly affects the selection of the method of ore mining and the arrangement of the ore block; (3) The shape of the ore body and the contact situation between the ore and the surrounding rock mainly affect the mining method, the ore transportation mode and the loss and depletion indicators; (4) the ore grade and value: a high grade rich ore mining and precious, when rare metal, often require high recovery rate, mining dilution rate method, even if the high cost of this type of mining method. Because the economic benefits of raising the grade of the mine and recovering more resources often exceed the increase in cost. Conversely, low-cost, high-efficiency mining methods such as caving should be used; (5) Depth of ore body burial: When mining deeper ore bodies (such as over 800m), the ground pressure will increase and rockburst will occur. At this time, the filling method should be considered. 2 ) Special requirements Certain special requirements may be the determining factor in the choice of mining method, such as: (1) Whether the surface is allowed to fall. If the surface has an important engineering (highways, railways, towns and villages, etc.), water (rivers, lakes, etc.) and other factors need to be protected (scenic areas, farmland, cultural sites, forest), does not allow the fall, when the mining method selection Priority should be given to mining parties that can protect the surface, such as filling methods; (2) Special requirements of the processing department for ore quality, such as depletion rate indicators, ore blockage, etc.; (3) If the ore contains high sulfur, there will be agglomeration and spontaneous combustion. The ore should be avoided from being stored in the mining site for a long time. If the ore containing radioactive elements is mined, the mining method with good ventilation effect should be adopted. High Pressure Water Gun Parts,Aluminum Die Casting Water Gun Parts,Die Casting Water Gun Parts,Die Cast Aluminum Housing Ningbo Zongchi Machinery Technology Co., LTD , https://www.nbdiecastservice.com
Main factors affecting the choice of mining methods
Mining methods play an important role in mine production. Because it has a significant impact on many technical and economic indicators of mine production, such as mine production capacity, ore loss rate and depletion rate, labor productivity, cost and safety, etc., the choice of mining method is reasonable, correct or not, It will directly affect the economic effects and safe production of mining enterprises. The choice of mining method is influenced by many factors, including: