Shenhua Develops New Equipment to Increase Coal Mining Efficiency by 10 Times

On March 31, Shenhua Shendong Coal Group announced that the world's first "high-speed and efficient tunnel excavation system for coal mines" has been operating successfully. It increases the efficiency of coal mining by 10 times.
On the same day, the Daliuta coal mine's high-efficiency and rapid excavation system has reached a height of 135 meters. Dr. Wang Liansheng, an operator, said that the original trough that required 7 months of excavation had been excavated in less than two months.
"The coal mine full-section high-efficiency and rapid excavation system" is the world's first set of such equipment. It was developed by Shenhua Shendong Group and Taiyuan Research Institute of China Coal Science and Industry Group and Shenyang North Heavy Industry Group. The total length of the system is 210 meters and the total weight is 630 tons. So far it has passed nine months of industrial operation tests.
Zhang Zifei, chairman of Shendong Group, who participated in research and development, said that the current low efficiency of coal mine excavation is mainly due to digging and unbalanced support. The coal face time usually accounts for only 17%-34%, while the supporting time accounts for 50%-67. %. The new system draws on the tunnel construction shield technology and integrates traditional processes such as excavation, transportation, support and dust removal, so that a large section of 25m2 coal roadway excavation can be synchronized with the excavation, one lane is formed, and the tunnel is drilled at a rate of 0.3 meters per minute. Transport 1500 tons per hour, can achieve 50 meters wireless remote control.
According to Zhang Yanlu, head of the R&D and manufacturing team and the dean of the Taiyuan Research Institute of China Coal Science and Technology Corporation, the monthly digging footage of commonly used excavators is 300-400 meters, and the monthly footage of continuous coal miners is about 1,000 meters. They have developed new systems. The efficiency is 10 times that of the excavation machine. With the new system, a team of 80 people can complete the workload of the past 500 people.
Zhang Zifei said that the new system has avoided the danger of frequent movements of working face equipment in the past; with the new system, coal miners do not have to work under the empty roof and are no longer exposed to dust.
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