THE ESTIMATION OF THE NUMBER OF UNDERGROUND COAL MINERS AND NORMALIZATION COLLECTIVE DOSE AT PRESENT IN CHINA
THE ESTIMATION OF THE NUMBER OF UNDERGROUND COAL MINERS AND NORMALIZATION COLLECTIVE DOSE AT PRESENT IN CHINA
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DOI：
10.1093/rpd/ncw146
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发表时间：
2017-04-01
影响因子：
1
通讯作者：
Wang, Chun-hong
中科院分区：
文献类型：
--
作者：
Liu, Fu-dong;Pan, Zi-qiang;Wang, Chun-hong
由于生产技术水平的提高和能源结构的调整，以及国家政策对乡镇煤矿和个体煤矿的关闭或兼并，我国煤矿井下作业人员的数量与2004年相比发生了变化，因此不同类型煤矿的集体剂量和标准化集体剂量应同时发生变化。本文根据不同通风条件下的辐射照射量和年产量，将我国煤矿划分为国家重点煤矿（NKCM）、国有地方煤矿（SLCM）和TPCM三类。在调查2005-2014年原煤年产量和生产效率的基础上，估算了目前煤矿井下作业人数、集体剂量和标准化集体剂量。2005-2009年中国推荐的地下煤矿工人的典型总价值为510万人，其中NKCM、SLCM和TPCM分别为100万人、90万人和320万人。2010-2014年，全国共有470万名井下煤矿工人，其中NKCM、SLCM和TPCM的人数分别为140万、120万和210万。2005-2009年集体剂量为11 335人·Sv·y（-1），其中NKCM、SLCM和TPCM分别为280、495和10 560人·Sv·y（-1）。截至2010-2014年，各类煤矿共有7982人·西弗·伊（-1）、392人·西弗·伊（-1）、660人·西弗·伊（-1）和6930人·西弗·伊（-1）。因此，集体剂量的主要贡献者来自TPCM。2005-2009年NKCM、SLCM和TPCM的标准化集体剂量分别为0.0025、0.015和0.117 man.Sv/10 kt。截至2010-2014年，每种类型的煤矿每10 kt有0.0018、0.010和0.107人.Sv。标准化集体剂量呈逐年下降趋势。
Due to the improvement of production technology and the adjustment of energy structure, as well as the town-ownership and private-ownership coal mines (TPCM) were closed or merged by national policy, the number of underground miner has changed comparing with 2004 in China, so collective dose and normalization collective dose in different type of coal mine should be changed at the same time. In this paper, according to radiation exposure by different ventilation condition and the annual output, the coal mines in China are divided into three types, which are named as national key coal mines (NKCM), station-owned local coal mines (SLCM) and TPCM. The number of underground coal miner, collective dose and normalization collective dose are estimated at present base on surveying annual output and production efficiency of raw coal in 2005-2014. The typical total value of the underground coal miners recommended in China is 5.1 million in 2005-2009, and in which there are respectively included 1 million, 0.9 million and 3.2 million for NKCM, SLCM and TPCM. There are total of 4.7 million underground coal miner in 2010-2014, and the respectively number for NKCM, SLCM and TPCM are 1.4 million, 1.2 million and 2.1 million. The collective dose in 2005-2009 is 11 335 man.Sv.y(-1), and in which there are respectively included 280, 495 and 10 560 man.Sv.y(-1) for NKCM, SLCM and TPCM. As far as 2010-2014, there are total of 7982 man.Sv.y(-1), and 392, 660 and 6930 man.Sv.y(-1) for each type of coal mines. Therefore, the main contributor of collective dose is from TPCM. The normalization collective dose in 2005-2009 is 0.0025, 0.015 and 0.117 man.Sv per 10 kt for NKCM, SLCM and TPCM, respectively. As far as 2010-2014, there are 0.0018, 0.010 and 0.107 man.Sv per 10 kt for each type of coal mines. The trend of normalization collective dose is decreased year by year.