
地下金属矿山无间柱连续采矿可靠性分析与设计
古德生、邓建、李夕兵
Reliability Analysis and Design of Non-pillar Continuous Mining in Underground Metal Mines
Gu Desheng、 Deng Jian、 Li Xibing
针对传统的两步骤采矿存在的一系列弊端,提出地下金属矿无间柱连续采矿理论与新的工艺技术。根据试验矿山的采矿技术条件,详细叙述了无间柱连续采矿的技术思路、技术要点和工业试验回采方案。方案中临时矿壁和1分区充填体的稳定性,对管理采场地压、有效控制大量出矿时的矿石损失贫化起着决定性作用。本文建立了临时矿壁的抗倾覆条件极限状态方程和强度条件极限状态方程,进行了临时矿壁抗倾覆稳定可靠性和强度稳定可靠性的分析与设计;建立了1分区充填体的三维极限状态方程,计算出1分区充填体的可靠指标和安全系数。
A high-efficient one-step mining method, Non-pillar continuous mining (NPCM), was originally put forward and carried out in a copper mine in Anhui Province, southeast of China. Reliability theory was employed to analyze the stability of the critical structures, including temporary ore wall and backfilling in substope of NPCM, which was completely different from the traditional analysis method, the deterministic value analysis method. Anti-overturning and strength limit state equations for temporary ore wall in NPCM were derived, and reliability index (β) and safety factor were calculated. The relationship between the reliability index and width of the temporary ore wall were shown. Further, this paper established a 3-D limit state equation of back-filling in sub-stope of NPCM. Using the 3-D limit state equation the safety factor of backfilling in substop and its reliability index were obtained.
地下金矿矿山 / 无间柱连续采矿 / 可靠性 / 临时矿壁 / 充填体
underground metal mine / non-pillar continuous mining (NPCM) / reliability / backfilling / temporary ore wall
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