人妖videosex高潮另类I97男人的天堂I国产三级av片I久久99精品久久久I国产不卡精品视频I国产区精品I国产精品理论片I超碰pronI亚洲午夜久久久久久久久久久I自由 日本语 热 亚洲人I风韵丰满熟妇啪啪区老熟熟女I亚洲在线看片I日韩人妻无码精品久久久不卡I亚洲九九I香蕉色网I成人美女毛片I一区二区三区av夏目彩春I三上悠亚亚洲一区I色综合视频网站I天天想夜夜操

On March 6, ENFI completed the last test on the control system for unmanned electric locomotive transportation popularization and application project in Dongguashan Copper Mine of Tongling Nonferrous Metals Group Holding Co., Ltd., and made the control system ready for commercialization.

Unmanned electric locomotive transportation system, put forward by Yu Runcang, the academician of Chinese Academy of Engineering and the senior consultant and expert of ENFI, was developed jointly by ENFI and Dongguashan Copper Mine of Tongling Nonferrous Metals Group Holding Co., Ltd. In 2010, the technology stepped into development and implementation stage, and a commercial test was carried out in Dongguashan Copper Mine. After nearly three years of tense work and  overcoming  a number of technical problems, the system was put into trial operation in the level -875 m of Dongguashan Copper Mine in May 2012. It passed the acceptance organized by Tongling Nonferrous Metals Group Holding Co., Ltd., and was  put into commercial production in August the same year. The technology fills a blank of science and technology in China and even in Asia.

The unmanned electric locomotive transportation system for underground mine consists of intelligent unmanned variable-frequency electric locomotive, roadway mobile wireless communication system, automatic dispatching of electric locomotive, protection and monitoring system and electric locomotive transportation power supply control system . The electric locomotive traction train achieves remote ore loading, automatic operation and ore unloading. Its operating status is displayed in dispatching room in real time via wireless communication, and it can be controlled through remote real-time dispatching if necessary, thus is very convenient for operation. The technology can satisfy the need of simultaneous transportation of several locomotive trains. Take the actual production of Dongguashan Copper Mine for example, application of the technology contributes to the reduction of the number of workers from 40 to 8 in transportation system, significantly improving the transportation efficiency and reducing the cost of production.