(1) The mining and cutting engineering volume is small and the flexibility is large;
(2) Loss of ore and small depletion;
(3) It can effectively maintain surrounding rock, reduce the movement of surrounding rock and prevent a large amount of falling;
(4) For thin ore veins or multi-species ore, sorting and recovery can be carried out;
(5) It can prevent internal fires caused by mining deposits;
(2) Disadvantages:
(1) The mining process and the filling process are complicated.
(2) Filling and mining affect each other. If the mechanization of mining operations cannot be properly solved, the production efficiency and production capacity are relatively low;
(3) The mining, processing, transportation and other series of consumption of filling materials make the ore cost higher. The cost of mining and accumulating fillings accounts for 40-50% of the cost of mining.
(4) High labor intensity;
Sinotruk is China's first heavy truck manufacturer, produced China's first heavy truck in 1960.
In October 2006, the Sinotruk was selected as China top ten brand.
Sinotruk's goal is to become the world leading heavy duty truck business, dedicated to provide users with cleaner, more energy efficient, more secure, more comfortable transport products.
Sinotruk specializes in R&D and manufacturing of heavy trucks and related major assembly parts. Products include truck and truck chassis (total weight over 14 tons), semi-trailer (quasi-trailer total quality over 12 tons), dump trucks and all kinds of special vehicle chassis and so on. The main products include HOWO, Steyr King, Steyr and the Yellow River series, with more than 2,000 models, Have the largest models in China, the product can be applied to different areas of heavy truck market. The company is widely used in the infrastructure, construction, container transport, logistics, mining, steel and chemical industries...
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