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为解决薄基岩破碎顶板窄煤柱综采面煤壁易片帮、顶板易冒顶、剧烈周期来压频繁等问题,结合薄基岩顶板的破断特征,研究了关键层对长、短周期来压的作用机理,提出了应用注浆加固技术、延长超前支护距离、密集支柱、超前预注化学浆、加强支护等安全回采技术。
In order to solve the problems such as thin coal seam fully mechanized mining face with thin coal pillar, roof prone to roof collapse and violent periodic pressure, etc., combined with the breaking characteristics of thin bedrock roof, Pressure mechanism of action, put forward the application of grouting reinforcement technology to extend the advance support distance, dense pillars, ahead of pre-injection of chemical pulp, strengthen support and other safe recovery technology.