Height of Fractured Zone for Fully Mechanized Mining
Since 1983, Yanzhou mining area has carried out test and study on coal mining technology under loose layers with great thickness. By applying a series of technical methods including surface drilling flushing fluid consumption observation, digital ultrasonic image of boreholes, exploration alley observation, water-conducting fracture zone depth data under extremely thick coal bed fully mechanized mining, slicing fully mechanized mining, underground fully mechanized mining and different mining conditions have been obtained and the systematical water-conducting fracture zone height prediction empirical formula has been counted and formed to fill the domestic gap. In recent years, based on study on a series of factors including fully mechanized mining working face parameters, roof rock stratum structure type and strength and maximum ground stress value, the water-conducting fracture zone height multi-factor influence regression prediction formula under the fully mechanized mining (exploration) conditions has been obtained, thus prediction precision has been significantly improved. Yanzhou mining area has applied the comprehensive water control technology for the extremely thick coal bed fully mechanized mining to free coal pillar resources overlaid by water body, which has gained significant benefits.
fully mechanized mining slicing overlying rock water-conducting fracture zone multi-factor prediction formula
Yunzhang Guan Dongxiang Hu
Yanzhou Coal Mining Company Limited Zoucheng, Shandong 273500
国际会议
The 12th Congress of International Mine Water Association,IMWA2014(第十二届国际矿井水大会)
徐州
英文
474-483
2014-08-18（万方平台首次上网日期，不代表论文的发表时间）