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该文主要介绍了分层开采假顶技术的研究发展过程，着重阐述了塑料网假顶技术研究试验情况、管理措施及获得的经济效益。
This paper mainly introduces the research and development process of the top-hatch technology of stratified mining, and emphatically expounds the research and test conditions, management measures and economic benefits of the plastic net roofing technology.