Particularity of pillar mining in ground pressure management

The mining pressure of the pillars is complicated and difficult to manage compared to the pressure of the mine. Because the pillar is subjected to concentrated stress and blasting of the mine, and the mining tunnel that has been excavated in the pillar. Its overall performance is weakened to varying degrees, reducing the stability of the pillar.

For example, when the two sides of the column are untreated mined areas, the column is often the part where the stress is concentrated. If the bottom is further pulled at the bottom of the column, the column is too suspended, which may be due to stress. Concentration and destruction or degeneration.

Fired Heater

Flame heater is a kind of equipment that uses the heat energy generated by the combustion of flame to heat. It usually consists of a fuel supply system, an ignition system, a combustion chamber, a Heat Exchanger and an emission system. The fuel supply system usually uses liquefied gas, natural gas or diesel as the fuel, the ignition system is used to ignite the fuel, the combustion chamber is where the fuel is burned, the heat exchanger is used to transfer the heat generated by the combustion to the heated object, and the emission system is used to discharge the exhaust gas produced by the combustion. Flame heater is widely used in industrial production, construction sites, wild camping and other occasions, has the advantages of fast heating, high efficiency, easy operation and so on.