【作者】 王力庆；

【导师】 章光；

【作者基本信息】 武汉理工大学 ， 采矿工程， 2010， 硕士

【摘要】 柿竹园多金属矿床呈透镜状分布,自上而下重迭,形成四个矿带。目前主要开采位于Ⅲ矿带490m水平以上的315×313m富矿段,采区由西往东划分成四个盘区,每个盘区从北至南分为九个矿块,共36个矿块。矿房间、盘区间均留15m厚的连续矿柱。经过二十几年的开采,490m水平以上36个矿块,已采动34块,仅剩2块未采。但自1987年矿山开始开采以来,由于矿体富集品位相对较低,加上世界钨产品价格偏低,以及原料工业比价不合理,矿山经营效益低,经济实力不足,除保证采选正常运作外,无力对采空区进行充填处理。因此导致目前累计采空区达200万m3,顶板暴露面积3万m2。由于采空区长时间未能处理,连续矿柱多处垮落,累计长240m,最大顶板连续暴露面积达8000m2,这对矿柱回采以及490m水平以下矿体开采造成了巨大威胁。如何结合矿山实际情况,合理整体规划开发矿产资源,确定安全可行的矿柱回采方案,并且确保柿竹园矿安全、高效、可持续发展是目前亟待解决的重大难题。为掌握柿竹园多金属矿床富矿段的地压活动规律,消除采空区的安全隐患,控制和减少不良的地质灾害的发生,确保矿柱回采安全可行、企业可持续发展,必须对该矿的开采技术与环境条件进行全面研究。从地压与岩移监控的角度出发,对矿床矿体的整体稳定性和上覆山体的岩移进行三维模拟分析并进行预测预报,并及时反馈到实际的采矿生产过程中,对不良区段可能诱发地质灾害的部位进行综合防治。本文作者在实地勘探调查研究之后,从影响空区冒落因素出发研究柿竹园矿的空区冒落破坏影响因素,从矿体的工程地质评价、矿床的赋存环境与矿体的开采现状分析着手,利用有限元数值模拟方法,对矿体围岩的应力分布、稳定性状态、矿体开采方式、地压控制方式等研究。参考国内外学者对矿山空区冒落破坏特征的研究,探索柿竹园矿采空区的稳定性及破坏规律,对比分析隔一采一与隔二采一两种不同方案回采矿柱的安全性及可行性,为柿竹园多金属矿490m水平回采矿柱方案提供安全可靠的决策依据。更多还原

【Abstract】 Shizhuyuan lenticular ore distribution, from top to bottom overlap to form four belts. At present the major mining bonanza at 490 meters above paragraph. Mining area to the east, divided into four panels, each panel is divided into nine from north to south ore blocks, a total of 36 blocks. Mine room,15m thick disk limits are to remain continuous pillar. After 20 years of mining, leaving only two blocks of unmined. However, since 1987, since the mine began mining, as ore grade is relatively low enrichment, coupled with low world price of tungsten products, and industrial raw materials price ratio reasonable, mine operating efficiency is low, lack of economic strength, in addition to ensure the normal operation of mining, the inability to deal with filling of mined areas. Gob led to the current total of 200 million cubic meters of exposed roof area of 30,000 square meters. As a long time failed to deal with Gob, continuous breaking down many of pillar 240 meters total length, maximum roof area of 8,000 square meters of continuous exposure. This pillaring and 490 meters below the ore mining has caused tremendous threat. How to combine the mine situation, a reasonable overall planning and development of mineral resources, determine the feasible and safe pillar recovery program, and to ensure Shizhuyuan mine safe, efficient, sustainable development is a major problem be solved.To master the rich ore deposits Shizhuyuan metal segment to Pressure Activities, to eliminate safety hazards Gob, control and reduce the incidence of adverse geological disasters. To ensure safe and pillar mining, sustainable development of enterprises, the exploitation of the mine must be technical and environmental conditions to conduct a comprehensive study. Pressure and rock movement from the ground control point of view, the stability of the deposit as a whole to consider. The stability of the ore body and the overlying mountain of three-dimensional simulation of rock movement and to forecast, and timely feedback to the actual mining production process. Of possible geological disasters were part of comprehensive prevention and control.This exploration of research in the field after falling from the impact of factors starting out area of the empty area Shizhuyuan caving mining damage factor. From the engineering geological assessment of the orebody, and ore deposit occurrence of environmental status of mining to proceed, using the finite element method numerical simulation method, the stress distribution on the surrounding ore body, the stability of the state, ore mining methods, ground control mode of study. Reference to domestic and foreign scholars mine gob caving characteristics of damage. Shizhuyuan explore the stability of Gob and damage laws. A comparative analysis across a mining and mining across two different options for one or two columns back to mining safety and feasibility. Shizhuyuan column for the mining program back to a safe and reliable basis for decision making.更多还原