特大型露天煤矿土地损毁碳排放研究——以平朔矿区为例

Carbon Emission from Land Damage Area in Large Opencast Coal Mines:A Case Study of Pingshuo Mining Area

研究目的:露天煤矿能源消耗产生的碳排放是主要受控排放源,对于减缓温室气体具有重要意义。研究方法:采用IPCC碳排放计算方法,确定露天煤矿区碳排放因子,构建露天煤矿区碳排放核算模型,确定直接碳排放、间接碳排放的计量模型。以平朔矿区三座大型露天煤矿为例,核算2011—2015年期间由于燃油、炸药、逸散、电力产生的碳排放。研究结果:2011—2015年期间平朔矿区三座大型露天煤矿土地损毁碳排放量高达591.21万t。燃油、爆破、逸散、电力产生的碳排放总量分别为302.60万t、16.30万t、203.66万t、68.65万t。研究结论:通过缩短运输运距、优化坑下采剥运输道路设计、提高机械使用效率、优化车铲匹配、减少电铲待装时间等措施,能够减缓大型露天煤矿土地损毁碳排放量。

The purpose of this paper is that the carbon emissions from energy consumption in opencast mines are the main source of controlled emissions, which is meaningful for reducing greenhouse gas. The IPCC carbon emission calculation method was used to determine the carbon emission factors of opencast mine and to calculate the direct carbon emissions and indirect carbon emissions from the opencast mines. Based on the three large-scale opencast coal mines in Pingshuo mine, we calculated the total carbon emissions generated from the fuel use, explosion, self dissemination and electricity production during the period of 2011-2015. The results shows that there are 5.9127 million tons carbon emissions from the three large-scale opencast mines in Pingshuo during this time. The total amount of carbon emissions generated by fuel use was about 3.02 million tons. The amount of carbon emission from blasting was about 0.16 million tons, and the carbon emission from self dissemination was about 2.04 million tons. The amount of carbon emission from electricity production was about 0.69 million tons. In conclusion, we can further reduce the carbon emissions from large-scale opencast coal mines by shortening the transportation distance, optimizing the design of pavement roadway, improving the efficiency of machinery utilization, optimizing the match of shovels and reducing the time for installing shovels. These measures will reduce the amount of carbon emissions caused by land destruction from large-scale opencast mines.