一、前言由于固体燃料向流体燃料的转换(称作能源革命),日本煤炭工业走上了撤退的道路,年产量曾经为5,500万吨的日本煤矿已经减少到1,700万吨。随着采掘深度的急剧增加,自然条件恶化,导致采煤成本增加,因此煤矿很难维持生存。笔者认为,作为日本剩下的唯一能源的煤炭,不能仅仅为利润而采掘,而必需从保障日本的安全角度重新研究。日本埋藏着丰富的煤炭资源。现已确认,去年封井的夕张新矿区,或者过去住友的奔别煤矿地区等,若以1,000米以下为目标,则蕴藏着储量相当可观的煤炭量。但是从深度上看,这些地区用现在的采煤方式采掘在安全方面还有很多问题尚待解决,因而是不能采掘的。 I. INTRODUCTION Due to the conversion of solid fuels to fluid fuels (called the energy revolution), the Japanese coal industry has embarked on a path of retreat and the Japanese mine, which used to produce 55 million tons of annual output, has been reduced to 17 million tons. As mining depth increases dramatically and natural conditions deteriorate, resulting in increased coal mining costs, it is difficult for coal mines to survive. In my opinion, as the only remaining energy source in Japan, coal can not be mined for profit but must be re-examined from the point of view of safeguarding Japan’s security. Japan is rich in coal resources. It has now been confirmed that the Yuxi Zhang mine last year, or Benzee’s Benben coal mine in the past, etc., has a significant reserve of coal below 1,000 meters. However, in terms of depth, there are still many problems that need to be solved in the current mining methods for mining in these areas and therefore can not be tapped.