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中文摘要：
在固体充填开采技术中,充实率对覆岩移动与地表下沉具有重要影响。文章以河南平顶山十二矿CT101工作面为例,采用FLAC软件建立固体充填开采数值计算模型,研究不同的充实率条件下覆岩移动与地表下沉的规律,研究表明：随着充实率的增大,覆岩关键层和地表最大下沉量呈现逐步降低趋势;当充实率小于75%时,下沉曲线在工作面边界附近位置处变化幅度最为显著,在下沉曲线中部位置处出现平底形状;当充实率大于75%时,下沉曲线整体呈现连续平缓的对称下沉形态。CT101工作面的现场实测表明,当充实率达到85%时,地表最大下沉量约为180mm,与下沉预计值200mm较为接近,预测结果偏于安全,可以为工程实践提供相关参考。
英文摘要：
In solid backfilling mining,the compression ratio of backfilling was significant for overlying strata movement and surface subsidence. Taking the CT101 working face for example,the paper established a numerical calculation model of strata movement in solid backfilling mining with FLAC numerical software, to study the influence of backfilling compression ratio on overlying strata movement and surface subsidence. The results indicate that,as the compression ratio increases,the subsidence of overlying strata key layer and ground surface reduces gradually; when the compression ratio is below 75%, the subsidence curve change is the most obvious at the working surface boundary and t the middle of subsidence curve shows a flat base shape; when the compression ratio is over 75%, the quantity of overlying strata movement and surface subsidence reduces significantly. The field measurement of CT101 working face shows that surface subsidence is 180 mm with compression ratio of 85%,which is close to the prediction of 200 mm.
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