戈塘金矿开采三维建模及围岩稳定性分析
发布时间：2018-11-03 14:08
【摘要】：微细浸染型金矿又名卡林型金矿,由于该类金矿矿床普遍存在矿床形态复杂、矿体与围岩界线不明显等特点,使得该类型金矿难以高效开发与利用。戈塘金矿作为典型的微细浸染型金矿,是复杂难采选矿山。由于其矿体赋存状态复杂、顶板稳固性差、底板波动变化规律差,结果在开采过程中面临着微细浸染型金矿共同的问题,例如开采损失贫化难以控制、采矿效率低下、矿山压力难以控制等。戈塘微细浸染型金矿又被称为复杂难采选金矿,其复杂性主要表现在矿体赋存状态复杂、顶板稳固性差、底板波动变化规律性差、开采损失贫化难以控制。导致金矿的边界勘定难度大,矿山的压力控制难以控制、采矿效率低下,给矿山的管理和高效开发利用带来了很大的困难。本文以国家“十二五”科技支撑项目(2012BAB08B00)“大型金矿绿色采选冶技术研究及示范”的子课题(2012BAB08B06)“微细浸染型难采选金矿高效开发利用关键技术研究”为依托,根据安龙县戈塘金矿复杂的矿床形态与地质条件,采用3DMine、FLAC3D、RFPA等软件进行矿体建模及巷道围岩稳定性分析研究。(1)结合矿山的地质资料,通过3DMine工程软件,建立划定研究区域的地质模型,这样可以很直观、清晰地将地质信息呈现出来,方便下一步矿山开采模型、巷道围岩稳定性分析等模型的建立及分析。(2)通过分析地质模型,结合矿山的钻孔资料,建立钻孔数据库,进一步分析矿体的形态、赋存状态,将建立矿山的开采三维模型。(3)通过分析三维地质模型和开采三维模型,选择剖面建立巷道地质力学模型,进一步分析开采扰动下巷道围岩的稳定性。通过上述戈塘金矿开采三维建模及围岩稳定性分析研究,可为矿山提高开采效率、控制矿山压力提供参考依据。
[Abstract]:The micro-disseminated gold deposit is also known as Carlin type gold deposit. Because of the complex shape of ore deposit and the indistinct boundary between orebody and surrounding rock, it is difficult to develop and utilize this type of gold deposit efficiently. As a typical fine disseminated gold deposit, Gotang gold deposit is complex and difficult to be mined. Because of the complex occurrence of orebody, the poor stability of roof and the bad variation law of floor fluctuation, there are common problems in mining process of micro-disseminated gold deposit, such as the difficulty of controlling mining loss and dilution, and the low mining efficiency. The mine pressure is difficult to control. Getang micro-disseminated gold deposit is also called complex refractory gold deposit. Its complexity mainly lies in the complex occurrence of orebody, the poor stability of roof, the poor regularity of fluctuation of bottom plate, and the difficulty of controlling mining loss and dilution. As a result, the boundary of the gold deposit is difficult to be determined, the pressure control of the mine is difficult to control, and the mining efficiency is low, which brings great difficulties to the management of the mine and the efficient development and utilization of the mine. This paper is based on the research on the key technologies of high efficiency exploitation and utilization of fine disseminated refractory gold deposits, which is a sub-project of the National "12th Five-Year Plan" (2012BAB08B00), "Research and demonstration of Green Mining and Metallurgical Technology of large Gold ores" (2012BAB08B06). According to the complex ore deposit morphology and geological conditions of Gotang gold deposit in Anlong County, ore body modeling and stability analysis of roadway surrounding rock are carried out by using 3DMineine FLAC3DRFPA and other softwares. (1) combined with the geological data of the mine, through the 3DMine engineering software, A geological model is established to delineate the study area, so that geological information can be presented intuitively and clearly, thus facilitating the next mining model. (2) by analyzing the geological model and the drilling data of the mine, the borehole database is established to further analyze the shape and occurrence state of the orebody. (3) through analyzing 3D geological model and mining 3D model, selecting section to establish roadway geomechanical model, further analyzing the stability of roadway surrounding rock under mining disturbance. Through the 3D modeling and the stability analysis of surrounding rock in Gotang gold mine mentioned above, it can provide a reference for mine to improve mining efficiency and control mine pressure.
【学位授予单位】：贵州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353
本文编号：2308020
[Abstract]:The micro-disseminated gold deposit is also known as Carlin type gold deposit. Because of the complex shape of ore deposit and the indistinct boundary between orebody and surrounding rock, it is difficult to develop and utilize this type of gold deposit efficiently. As a typical fine disseminated gold deposit, Gotang gold deposit is complex and difficult to be mined. Because of the complex occurrence of orebody, the poor stability of roof and the bad variation law of floor fluctuation, there are common problems in mining process of micro-disseminated gold deposit, such as the difficulty of controlling mining loss and dilution, and the low mining efficiency. The mine pressure is difficult to control. Getang micro-disseminated gold deposit is also called complex refractory gold deposit. Its complexity mainly lies in the complex occurrence of orebody, the poor stability of roof, the poor regularity of fluctuation of bottom plate, and the difficulty of controlling mining loss and dilution. As a result, the boundary of the gold deposit is difficult to be determined, the pressure control of the mine is difficult to control, and the mining efficiency is low, which brings great difficulties to the management of the mine and the efficient development and utilization of the mine. This paper is based on the research on the key technologies of high efficiency exploitation and utilization of fine disseminated refractory gold deposits, which is a sub-project of the National "12th Five-Year Plan" (2012BAB08B00), "Research and demonstration of Green Mining and Metallurgical Technology of large Gold ores" (2012BAB08B06). According to the complex ore deposit morphology and geological conditions of Gotang gold deposit in Anlong County, ore body modeling and stability analysis of roadway surrounding rock are carried out by using 3DMineine FLAC3DRFPA and other softwares. (1) combined with the geological data of the mine, through the 3DMine engineering software, A geological model is established to delineate the study area, so that geological information can be presented intuitively and clearly, thus facilitating the next mining model. (2) by analyzing the geological model and the drilling data of the mine, the borehole database is established to further analyze the shape and occurrence state of the orebody. (3) through analyzing 3D geological model and mining 3D model, selecting section to establish roadway geomechanical model, further analyzing the stability of roadway surrounding rock under mining disturbance. Through the 3D modeling and the stability analysis of surrounding rock in Gotang gold mine mentioned above, it can provide a reference for mine to improve mining efficiency and control mine pressure.
【学位授予单位】：贵州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD353
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