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通过３５０２综采工作面在煤柱下开采的试验，阐述了煤柱下开采的实践过程和采取的具体措施，测定和分析了液压支架的工作状况和矿山压力的显现规律，进而整理出了一整套技术资料，其经验可作为煤柱下综采的成功范例
Through the experiment of 3502 fully mechanized coal face mining under coal pillar, the practice process and concrete measures taken under coal pillar are expounded, the working condition of hydraulic support and the appearance of mine pressure are determined and analyzed, and then a The whole set of technical information, its experience can be used as a successful example of coal mining