The biggest blasting technical problem facing the open pit mine near the village group is blasting vibration and flying stone. In the current conventional blasting, the blasting flying stone should be effectively controlled, but the impact of blasting vibration n.......
As an important staple food source, rice occupies an important position in our daily lives. In recent years, the consumption of rice has begun to change from eating “full†to eating “goodâ€. With good appearance quality and good taste, nutritious rice is mo.......
According to the national policy document on smart cities and fire protection, we know that the smart electricity system currently being promoted in the market is the real-time online monitoring and analysis of the main factors that cause electrical fire (cable temperature, current load, and .......
China's tin mines had a mining volume of 5.304 million tons in 1996, including 3.052 million tons of underground mining and 2.252 million tons of open-pit mining. Nearly half (103.6 million tons) of open pit mining is a sand m.......
(1) Features of full tailings filling. The domestic tailings are filled with grit, and the amount of sand is often insufficient. The overflow tailings cannot be dammed, and the quarrying and damming is required. The cost is high, and the fine-grained overflow tai.......
The seed tag two-dimensional code is not a simple picture, but carries more information. It passes a single code, and it gives each seed product a unique “IDâ€, avoiding copying and Misappropriation. Behind this, this two-dimensional code technology has established a r.......
Ore grade level representative of how much metal content, high-grade ore beneficiation plant processing low-grade ore and the effect is not the same. When processing ore grades, it is necessary to obtain more concentrates under t.......
When drift inclined coal layer tunneling, tunneling generally double lane, lane ahead single water exploration method. That is to use the roadway above the old sky to explore the water ahead of the road. The water drilling holes a.......
Mining coal mining method used at 1.1 Water
The coal mining under the water body mainly prevents the water or mud sand in the overlying water body from falling into the well, thereby increasing the risk of underground c.......
At the beginning of 2018, the Second Department of China Aerospace Science and Technology Second Institute successfully developed the “Intelligent Auxiliary Driving System Based on Deep Learningâ€. With embedded chips of several centime.......