The room and pillar method mainly relies on the stability of the surrounding rock and the remaining pillars for ground pressure management. If stability is poor roof slate stone, rock top plate may be installed by the pole, to increase its stability, if the local instability, may leave some areas in these pillars. This mining method is therefore more flexible. The pillars left by the room column method are initially continuous pillars (also called mines), and the pillars are generally not recovered, as permanent losses. Later, with the development of mining technology, the continuous pillar will be changed to a discontinuous pillar, which can improve the ore recovery rate.
Mini crawler Dumper in mud, icy roads, dumps design, crawler walking, motor to walk, a great deal of extended use power. Specific size can be customized according to demand. Carrying capacity is strong, climbing ability, simplicity of operator, maintenance easy.
Description of crawler dumper:
1. Rubber tracks offer the lowest ground pressure high performance movement and excellent traction.
2. Electric powered dumper optional.
3. The self-loading shovel achieves safe and quick rear dumping.
4. 1447 mm ultrahigh dumping height can transport various materials to the truck.
5. The X -support can be dismounted to achieve lower dumping.
6. Heavy duty skips suitable for different kinds of materials of building farming and so on.
If you have any questions, please contact with us directly. Crawler dumper enjoys very good market feedback. Welcome to visit our factory and please send enquiry freely.
Mini Dumper Crawler,Mini Dumper Truck,Dumper Crawler,Crawler Dumper Shandong Hengwang Group Co., Ltd , https://www.hwmac.com
Characteristics of the room and pillar mining method of the open field mining method
The room and pillar mining method is a kind of empty field mining method. It is based on the division of the ore blocks. The mining room and the pillars are alternately arranged, and the regular or irregular pillars are left when returning to the mining room. Manage the ground pressure.