Huainan coal field as main object,investigation of Karstic hydrogeological con- ditions were developed in Huainan structureal unit,and the basic conditions,features and rules of Karstic growth were summarized.Geology ...Huainan coal field as main object,investigation of Karstic hydrogeological con- ditions were developed in Huainan structureal unit,and the basic conditions,features and rules of Karstic growth were summarized.Geology background and causes of Karstic col- lapse columns were analyzed.Combined with ancient physiognomy,environment and li- tho-facies features.After studying synthetically Karstic collapse columns,shape of col- lapse body,filling feature,hydrodynamic condition and agglutinate material in Huainan area,considering mine hydrogeological conditions of Xuhuai coal field and referenced Karstic collapse columns characters of other mines in North China,the internal thermal origin theory is elementarily formed for Karstic collapse columns extrinsic cycle can not operate smoothly.Finaly,three aspects including distributing features of different kinds of Karstic collapse columns in north China type coal field,conditions of Karstic collapse col- umns origined from internal thermal with no smoothly extrinsic cycle,mechanics of causes were analyzed and demonstrated.展开更多
Geohazards appear to be increasing in frequency globally. It is of necessity to actively manage these natural hazards to minimize loss of life and property. From an early warning perspective, this paper stresses the p...Geohazards appear to be increasing in frequency globally. It is of necessity to actively manage these natural hazards to minimize loss of life and property. From an early warning perspective, this paper stresses the potential fatal flood hazard represented by the huge volume of water in Tianchi Lake, the unique geography of Changbai Mountain, and the limited flood control ability in the upstream of the Songhua River. Northeast Asian countries should keep a watchful eye on the Changbai volcano cooperatively, and Chinese government especially needs to prepare plans for fighting a flood in advance.展开更多
基金the China National Program on Key Basic Research Project(2006CB202209)
文摘Huainan coal field as main object,investigation of Karstic hydrogeological con- ditions were developed in Huainan structureal unit,and the basic conditions,features and rules of Karstic growth were summarized.Geology background and causes of Karstic col- lapse columns were analyzed.Combined with ancient physiognomy,environment and li- tho-facies features.After studying synthetically Karstic collapse columns,shape of col- lapse body,filling feature,hydrodynamic condition and agglutinate material in Huainan area,considering mine hydrogeological conditions of Xuhuai coal field and referenced Karstic collapse columns characters of other mines in North China,the internal thermal origin theory is elementarily formed for Karstic collapse columns extrinsic cycle can not operate smoothly.Finaly,three aspects including distributing features of different kinds of Karstic collapse columns in north China type coal field,conditions of Karstic collapse col- umns origined from internal thermal with no smoothly extrinsic cycle,mechanics of causes were analyzed and demonstrated.
基金the Knowledge Innovation Program of Chinese Academy of Sciences (Grant No. KZCX2-EW-319)the National Basic Research Program of China (Grant No. 2010CB951301)the National Natural Science Foundation of China (Grant No. 40871089)
文摘Geohazards appear to be increasing in frequency globally. It is of necessity to actively manage these natural hazards to minimize loss of life and property. From an early warning perspective, this paper stresses the potential fatal flood hazard represented by the huge volume of water in Tianchi Lake, the unique geography of Changbai Mountain, and the limited flood control ability in the upstream of the Songhua River. Northeast Asian countries should keep a watchful eye on the Changbai volcano cooperatively, and Chinese government especially needs to prepare plans for fighting a flood in advance.
