大结构参数无底柱分段崩落法的发展及技术问题探讨

Discussion on Development and Technical Problems of Sublevel Caving with Large Structural Parameters

无底柱分段崩落法引入我国已有近50 a的历史,在铁矿石开采中占有重要地位,也取得了丰硕的研究成果,近年来正向大结构参数发展。从历史地位、铁矿石经济发展需求、待开发矿体赋存特征、露天转地下的适应性等方面分析了无底柱分段崩落法仍将是未来主要的采矿方法。并从设备配套、爆破问题、基于现场出矿的放矿理论等方面论述了我国大结构参数发展下需要注意的问题,对大结构参数的快速发展,充分发挥大结构参数无底柱分段崩落法的优越性具有积极意义。

There are nearly 50 years of history since the pillarless sublevel caving was introduced into our country,which occupies an important position in the iron ore mining with fruitful results in recent years. It gradually changes into a positive large structural parameters. With the improvement of environmental protection,rapid development of filling method,it is found that the pillarless sublevel caving method will still be the major mining method in the future after analyzing the features from aspects of the historical status,the economic development needs on iron ore,the occurrence of the ore body to be developed, and adaption from the open pit to underground. And the issues that should be paid attention under the development of large structural parameters are discussed from views of ancillary equipment,blasting,field ore-drawing theory. These are beneficial to improve the rapid development of large structural parameters,and give full play of the large structural parameters in the superi-or of pillarless sublevel caving method.