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单体液压支柱在会泽铅锌矿的应用研究
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摘要
本文以国家一一五科技支撑计划课题“复杂富水矿床开采关键技术开发研究(2006BAB02A01)”为依托,主要针对驰宏锌锗股份有限公司会泽铅锌矿区1#矿体工程实际条件,运用岩体力学理论将工程地质调查、理论分析、数值模拟、现场监测等方法有机结合,对在开采会泽铅锌矿破碎不稳定矿体时液压支柱对采场的支护效果进行了研究,主要包括如下内容:
     1)根据矿山目前技术装备水平和8#、1#矿体赋存条件,进行了两次液压支柱护顶上向水平分层法的采场实验。通过对实验中支柱变化及顶板相关监测数据的分析处理,揭示液压支柱对金属矿山采场顶板的支护作用效果。
     2)对在会泽矿使用的相关设备进行总结,针对液压支柱系统设备在实际使用过程中出现的问题,提出改进措施,为在会泽铅锌矿及其它金属矿山更好的使用液压支柱系统提供参考。
     3)运用FLAC3D数值模拟软件对采场的开挖、支护过程进行了模拟,将数值模拟与实际监测数据相结合的方式,进一步分析液压支柱使用时的特性及力学作用特点,通过对合理支护参数的探讨,解决液压支柱在会泽矿使用时的参数设定。
     4)通过对液压支柱在开采会泽铅锌矿高应力、高破碎倾斜中厚难采矿体时的系统总结,结合目前液压支柱在金属矿山的使用情况,探讨在更多金属矿开采中引入液压支柱作为采场支护设备的可行性。
This article relied on Key Projects in the National Science & Technology Pillar Program in the Eleventh Five-year Plan Period "Development and Research of Key Technology for Complicated and Rich Water Deposit Mining"(2006BAB02A01). According to the engineering condition of 8# ore body in Huize Lead & Zinc mine of Yunnan Chihong Lead & Ge Co., LTD., and integrating research methods of engineering geological survey, theory analysis, numerical simulation and on site monitoring based on rock mass mechanics theory, the supporting effect of the hydraulic props on the stope when mining the fractured unstable ore body in Huize Lead & Zinc mine was studied. This study accomplished works as follows:
     1) According to the currently technical and equipment level and the occurrence conditions of 8#、1#o ore body, two stope-tests has been done about the upward horizontal slice stoping method using Hydraulic props roof supporting technology. Through the analysis on the monitoring related data of the support and the roof during the experiments, supporting effect of the Hydraulic props on the roof in metal mine has been revealed.
     2) The related equipments using in Huize Zine mine at present were summarized, According to the matters came about during the actual use of the Hydraulic props, optimized and improved measures have been put forward, this could been a reference for Huize Zine mine and other metal mines.
     3) The excavation and supported process of stope were simulated by numerical simulation using FLAC3D software. Based on the combination of the simulation results and the actual monitoring date, the characteristics and the effect mechanism during its use process were analyzed further. The parameter design of the hydraulic props using in Huize Zine mine was solved through the discussion of the reasonable supporting parameter.
     4) Through the systematic summarization on the use of hydraulic props roof supporting in high in-situ stress and extreme fractured steep medium thick ore body, and the integration of the present use situation of the hydraulic props in metal mine, feasibility analysis has been done on the assumption that the hydraulic props were employed by more metal mine as supporting system.
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