Energy method and numerical simulation of critical backfill height in non-pillar continuous mining

来源期刊：中国有色金属学报(英文版)1999年第4期

论文作者：邓建 古德生 李夕兵 彭怀生

文章页码：847 - 851

Key words：continuous mining; critical height; energy method; numerical simulation

Abstract: Non-pillar continuous mining(NPCM) is regarded as a high-efficient, high-level and one-step mining technology, which can be divided into two substopes. Back fill stability status in substope I, which directly influence the loss rate and dilution rate, etc, will determine whether the experimental research is successful or not. By employing energy method of limit analysis and finite element numerical simulation method, the critical backfill height was determined under the prerequisite condition of its stability, which put forward theoretical basis for reasonable and correct selection of backfill's parameters. The result showed that the first backfill could not keep stable for NPCM, while the other was able to.