摘要
我国北方和西北干旱地区煤田自燃地质灾害比较严重。本文研究了新疆乌鲁木齐西山煤矿烧变岩。从岩石学特征、Fe2 O3 / (Fe O+Fe2 O3 )比例可将烧变岩划分为烧变岩和烧熔岩两种。其 K- Ar同位素年龄为 1 5.8× 1 0 4a- 1 6.4× 1 0 4a。本文还探讨了煤田自燃的原因和预防方法。
The northern and northwestern parts of China,arid and in water shortage,are frequently attacked by coalfield selfcombustion geological hazard.The authores make a study on the burnt rocks from Xinjian Urumqi coalfield in northwest China.Its petrology and Fe 2O 3/(FeO+Fe 2O 3) ratios shows the burnt rocks can be divided into two kinds:burnt rock and melt rock.The K Ar isotope ages of the burnt rock of Urumqi are 15.8×10 4 a-16.4×10 4 a.The paper also discusses the major causes and precautionary measures for coodfield selfcombustion.
出处
《南京建筑工程学院学报》
2001年第4期15-19,共5页
Journal of Nanjing Architectural and Civil Engineering Institute(Natural Science)
基金
国家八五攻关三 0五项目 (85- 90 2 - 0 6- 1 2 )
关键词
煤田自燃
地质灾害
烧变岩
coalfield selfcombustion
geological hazard
burnt rock
