谁能帮忙翻译一下!!万分感谢!!

来源:百度知道 编辑:UC知道 时间:2024/05/11 17:24:02
煤炭是我国分布最广,数量最多的一种矿产,它是由太阳辐射能转化而成的,属于化石燃料类。按其煤化程度不同可分为:褐煤、长焰煤、不粘煤、弱粘煤、1/2中粘煤、气煤、气肥煤、肥煤、1/3焦煤、焦煤、瘦煤、贫瘦煤、贫煤、无烟煤。
云南煤炭具有类型、煤种齐全,成煤期众多,资源丰富,分布不均衡(东富、西贫)的特点,云南累计探明煤矿储量224.0亿t,保有储量240.6亿t。云南煤矿分属早石炭世、早二叠世、晚二叠世、晚三叠世、中新世、上新世、和更新世等七个成煤期。而又高度集中于新第三纪和晚二叠世。
通过调查得出了云南煤矿的天然放射性水平:主要是褐煤、低变质烟煤、中变质烟煤和高变质烟煤的天然放射性水平。其中褐煤中放射性核素238U、232Th、226Ra的平均比活度分别为:87.1Bq/kg、31.3Bq/kg、60.0Bq/kg。低变质烟煤(包括长焰煤、不粘煤和弱粘煤)天然放射性水平较低,(238U:33.2~50.0Bq/kg、232Th:52.5~54.4Bq/kg、226Ra:30.6~56.5Bq/kg),比活度明显低于褐煤,且伴生的铀、镭基本平衡,铀、钍亦基本平衡。中变质烟煤即炼焦用煤(包括气煤、气肥煤、肥煤、1/3焦煤、焦煤、瘦煤、贫瘦煤,统称烟煤)中天然放射性水平238U:74.55±53.07Bq/kg、232Th:41.38±29.21Bq/kg、226Ra:63.59±50.63Bq/kg,低于褐煤中的放射性均值,且伴生的铀镭基本平衡,铀钍偏铀。高变质煤(包括无烟煤和贫煤)放射性水平相对较低,(238U:29.1Bq/kg、232Th:25.9Bq/kg、226Ra:37.5Bq/kg),明显低于褐煤和烟煤的放射性水平,且波动范围较小、相对稳定
通过对临沧铀锗煤矿田和开远小龙潭(煤矿)电厂作出调查比对,说明了天然放射性核素(238U、232Th、226Ra)比活度在利用过程中的转移以及给当地放射环境带来的影响。

The coal is that the widest that our country is distributed, a kind of plentiful mineral products, it is formed after the radiation energy of the sun is transformed , it is the fuel of fossil. Intensity with can divide into according to coal its: Brown coal , jet coal , glue coal,, weak to glue coal , 1/2 glue coal , bottle coal , gas rich coal , fat coal , 1/3 coking coal , coking coal , , lean coal
It is complete that Yunnan coal has type , coal, it is numerous to become coal one, resources are abundant , the characteristic that it is unbalanced (poor in the east richness , the west ) to be distributed, verify the reserves 22,400 milliont of the colliery , reserves 24,060 milliont totally in Yunnan. Yunnan colliery belong to early generation , early two generation , late two generation , late three generation such as charcoal such as stone, Miocene Epoch, have new generation , become coal with seven such as Pleistocene respectively And highly concentrate on new Tertiary Peri