煤矿中的突出问题长久以来已经引起采矿工程师们的注意.尽管发表了各种内容广泛的论文和报告,严重的事故和损失仍然继续发生.在南威尔士煤田西部,同世界上许多其它煤田一样也发生过煤层突出事件.而在西威尔士突出次数和强度较小.兹将西威尔士突出情况,同其他国家的一起列于表1.欧洲大陆国家的统计资料是最新的. Outstanding problems in coal mines have long drawn the attention of mining engineers, and serious accidents and losses continue to occur, despite the wide range of papers and reports published, and in the west of the South Wales coalfield, just as many other coal fields in the world Coal seam prominences occurred, while prominence and intensity were less pronounced in West Wales The West Wales case is highlighted and is listed in Table 1 along with other countries. Statistics for continental countries are up-to-date.