针对龙王沟煤矿特厚煤层大采高综放开采工程地质背景及开采技术条件，分析了

Aiming at the engineering geological background and mining technical conditions of longwanggou coal seam and large mining height fully mechanized caving mining, this paper analyzes the roof structure under the conditions of large mining height fully mechanized caving mining. The process parameters have been optimized and the ratio of mining and caving is determined to be 1:2.74, and the caving step is 0.865m. According to Longwanggou Mine’s ultra-thick coal seam and large-height fully-mechanized caving mining conditions, the reasonable supporting parameters of the three machines in this working face are calculated and determined, and a rotatable hydraulic support guard plate is added to optimize the pipeline design of the hydraulic support to ensure the support column After pedestrians pass safely; the parameters of the scraper conveyor are determined, and the relationship between the transportation volume and the laying length at different working face inclination angles is analyzed, and the width of the inner groove and the installed power are determined by calculating the cross section of the scraper conveyor.

In view of the geological background and mining technical conditions of the special thick coal seam mining project of Long Wanggou Coal Mine, the top plate structure under the conditions of the special thick coal seam mining and high comprehensive mining was analyzed, and the optimal design of the top plate of the 61601 work surface of Long Wanggou mine was optimized, and the mining ratio was determined to be 1:2.74 and the coal release step distance was 0.865m. According to the conditions of high-lift mining of the special thick coal seam of Long Wanggou mine, the reasonable supporting parameters of the three machines of this work surface are calculated and determined, the line design of the hydraulic support is optimized to ensure the safe passing of pedestrians behind the pillar of the support, the parameters of the scraper conveyor are determined, and the relationship between the volume and laying length of the different work surface tilt is analyzed, and the width of the inner groove is determined by calculating the cross-section of the scraper conveyor.

According to the engineering geological background and mining technical conditions of longwanggou coal mine's extra thick coal seam with large mining height and fully mechanized top coal caving mining conditions, the roof structure under the condition of large mining height fully mechanized top coal caving mining in longwanggou coal mine is analyzed. The technology parameters of fully mechanized top coal caving at 61601 working face of longwanggou coal mine are optimized. The mining and caving ratio is 1:2.74 and the caving step distance is 0.865 M. According to longwanggou coal mine extra thick coal seam large mining height fully mechanized caving mining conditions, the reasonable matching parameters of three machines in this working face are calculated and determined. It is proposed to add the rotatable hydraulic support side guard plate, optimize the pipeline design of the hydraulic support, so as to ensure the pedestrian safety passing behind the support column, and determine the parameters of scraper conveyor By calculating the cross-section of scraper conveyor, the width of inner groove and installed power are determined.<br>