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为了研究坚硬粘土层的存在对薄基岩综放工作面矿压显现的影响,以司马矿1101工作面为研究对象,采用理论分析、数值模拟和现场实测的方法对薄基岩工作面覆岩结构和矿压显现规律进行研究。结果表明:粘土层的存在,在一定程度上承担了上覆沙土层的载荷并和薄基岩组合形成较稳定的结构,随着粘土层厚度增加支撑压力峰值向前转移,缓减了矿压显现强度,保证了1101工作面初期的安全开采,取得良好的经济效益。
In order to study the effect of hard clay layer on the occurrence of rock pressure in the fully mechanized top-coal caving face of thin bedrock, taking the 1101 face of Sima Mine as the research object, theoretical analysis, numerical simulation and field measurement methods were used to study the influence of overburden Structure and pressure show the law. The results show that the existence of clay layer takes the load of overlying sand layer to a certain extent and forms a stable structure with the thin bedrock. As the thickness of clay layer increases, the supporting pressure peak moves forward and reduces the rock pressure Reveal the strength, to ensure the initial mining 1101 safe mining, and achieved good economic returns.