摘要
以鲍店煤矿83上01工作面3煤层分层开采为研究背景,采用经验公式和数值模拟的方法,对厚松散层薄基岩重复采动下的覆岩破坏高度进行了研究。根据开采技术条件和岩石力学参数,应用FLAC3D数值模拟软件,建立了数值计算模型,对上覆岩层随工作面开采引起的塑性区及应力分布特征进行了分析,确定了3上和3下煤层的"两带"高度,并与经验公式进行了对比验证。
Taking the repeated mining in No.3 seam 83up01 working face of Baodian coal mine as the study background,the fracturing rules of overlying strata under repeated mining of thick coal seam were studied by using the methods of empirical formula and numerical simulation.A numerical model was built based on mining conditions and rock mechanics parameters by FLAC3 Dnumerical simulation software.The distribution of plastic zone and stress for overlying rock layers affected by mining were studied,to determine the height of the caving zone and the water conducted fractured zone in 3upand3 downcoal seams. And compared with the empirical formula.
出处
《煤炭技术》
北大核心
2017年第8期72-75,共4页
Coal Technology
基金
国家重点基础研究发展计划(973)项目(2013CB036003)
关键词
厚松散层薄基岩
导水裂隙带
垮落带
thin bedrock with thick loose bed
water conducted fractured zone
caving zone
