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结合参与国土资源部"一张图"工程的亲身感受及其所取得的成果,并在分析了煤矿信息化建设存在不足的基础上,提出了煤矿"一张图"的概念及其体系结构,详细探讨了煤矿"一张图"的关键技术和构建步骤,最后结合煤矿"一张图"的体系结构,分析了其在矿区安全监测监控管理中的应用,实现了基于采掘工程平面图的监测监控、人员定位应用等。 相似文献
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排土场是露天矿山的重大危险源之一,其沉降监测一直以来备受重视。本文根据某露天钼矿排土场沉降监测方法及特点,提出利用全站仪后方交会的方法进行沉降观测,通过观测实验,分别对测角、测边后方交会的坐标数据进行比较分析,综合考虑数据的精度和产生误差的原因,并依此得出测边后方交会更加适合于该露天钼矿排土场沉降观测的结论。 相似文献
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The Sanggok mine used to be one of the largest lead-zinc mines in the Hwanggangri mining district, Republic of Korea. The
present study characterizes the heavy metal contamination in the abandoned Sanggok mine creek on the basis of physico-chemical
properties of various kinds of water samples (mine, surface and groundwater). Hydrochemistry of the water samples is characterized
by the relatively significant enrichment of Ca2+, HCO3
–, NO3
– and Cl– in the surface and groundwaters, whereas the mine water is relatively enriched in Ca2+, Mg2+, heavy metals, and HCO3
– and SO4
2–. The more polluted mine water has a lower pH and higher Eh, conductivity and TDS values. The concentrations of some toxic
elements (Al, As, Cd, Cu, Fe, Mn, Pb, Se, Sr, Pb and Zn) are tens to hundreds of times higher in the mine water than in the
unpolluted surface and groundwaters. However, most immobile toxic pollutants from the mine drainage were quickly removed from
the surface water by the precipitation of Al and Fe oxyhydroxides. Geochemical modeling showed that potentially toxic heavy
metals might exist largely in the forms of MSO4
2– and M2+ in the mine water. These metals in the surface and groundwaters could form M2+, CO3
2– and OH– complex ions. Computer simulation indicates that the saturation indices of albite, alunite, anhydrite, chlorite, fluorite,
gypsum, halloysite and strontianite in the water samples are undersaturated and have progressively evolved toward the saturation
condition. However, barite, calcite, chalcedony, dolomite, gibbsite, illite and quartz were in equilibrium, and only clay
minerals were supersaturated. Ground and mine waters seemed to be in equilibrium with kaolinite field, but some surface water
were in equilibrium with gibbsite and seceded from the stability field of quartz. This indicates that surface water samples
in reaction with carbonate rocks would first equilibrate with carbonate minerals, then gibbsite to kaolinite. Investigations
on water quality and environmental improvement of the severely polluted Sanggok creek, as well as remediation methods on the
possible future pollution of the groundwater by the acid mine drainage from the abandoned metal mines, are urgently required.
Received: 4 February 2000 · Accepted: 9 May 2000 相似文献