1522 that all indexes of the system meet the design requirements, meeting the annual production capacity of 2530 Mt of raw coal. The start stop is stable, the operation is reliable, and the core parameters such as power balance, dynamic tension, and key component vibration are all within the safety threshold. Table 2-Comparison of key performance indicators Content International level (CDI, USA) Chinese level （including Shanghai Co., Ltd.） This paper Comparison results Transportation volume 2500t/h 7000t/h 5500t/h / Transportation distance 12200m 3040m 5491m / Elevation height / 318m 520m The highest Belt width / 1800m 2000mm / Belt strength ST7000 ST/S7000 ST/S7000 Equivalent Drive power 10100kW 15750kW 18900kW Maximum Power balance / 95% 97% / Roller resistance performance CEMA MT821 MT82 Reduce by 28% Anti-blocking and dust suppression at transfer points / / P Dust reduction 90% Intelligent step type loose belt device / / Efficiency increased by 80% P Digital twin platform / / P Advanced Compared with the advanced level at home and abroad, the system ranks first in terms of lifting height in China's ten million ton coal mines, and first in terms of belt strength and driving power in China's coal mines. At the same time, significant progress has been made in key performance indicators such as power balance, low resistance of idler, unpowered dust suppression and intelligent operation and maintenance, and the comprehensive technical performance has reached the international leading level. Figure 11-On site operation 6. CONCLUSIONS Aiming at the huge continuous transportation demand for the main inclined shaft of Kekegai coal mine of Yanchang Petroleum in Shaanxi Province, which has a transportation distance of nearly 5500m, a lifting height of 520m, and an annual production capacity of 25Mt, this research has overcome many core technologies, such as dynamic characteristics of complex working conditions, distributed drive optimization, drive cooperative control and highly reliable communication, digital twin predictive maintenance. China's first DTL200/550/G3×3150+3×3150S ultra-high-power, intelligent, and highly efficient main inclined shaft belt conveyor system is successfully developed, realizing a major breakthrough in the intelligent transportation equipment for the main inclined shaft of 10 million tons of coal mine. The equipment has set a new record for the belt conveyor in the main inclined shaft of China's 10 million ton coal mine in terms of lifting height of 520m, belt strength of ST/S7000, and driving power of 6×3150kW. It fills the technological gap in China, sets a new benchmark in the industry, and provides a safe, efficient and reliable intelligent continuous transportation solution for China's 10 million tons intelligent mine construction. ! " # " ! ! " ! " " ! " # # # ! ! ! ! ! ! ! ! " # = = = + ! !
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