Several approaches including hydrogeochemistry and isotope hydrogeology have been used to investigate the karst groundwater systems at Pingdingshan coalfield in recent years. The results of the modeling and evaluation...Several approaches including hydrogeochemistry and isotope hydrogeology have been used to investigate the karst groundwater systems at Pingdingshan coalfield in recent years. The results of the modeling and evaluation of groundwater chemistry, as parts of recent research progress at the area, are presented. The characteristics of Cambrian karst groundwater flow was analyzed in terms of tritium distribution of groundwater based on the fact that the Guodishan fault, the largest one within the coalfield, is divided into permeable (southern and northern) and impermeable (middle) sections. The evolution of groundwater chemistry, the suitability of geothermometers and the feature of karst development were deduced and discussed using the speciation modeling and mass balance approach.展开更多
文摘Several approaches including hydrogeochemistry and isotope hydrogeology have been used to investigate the karst groundwater systems at Pingdingshan coalfield in recent years. The results of the modeling and evaluation of groundwater chemistry, as parts of recent research progress at the area, are presented. The characteristics of Cambrian karst groundwater flow was analyzed in terms of tritium distribution of groundwater based on the fact that the Guodishan fault, the largest one within the coalfield, is divided into permeable (southern and northern) and impermeable (middle) sections. The evolution of groundwater chemistry, the suitability of geothermometers and the feature of karst development were deduced and discussed using the speciation modeling and mass balance approach.
文摘地面沉降是煤矿区最主要的地质灾害之一,它严重威胁着矿山生产安全,破坏了生态地质环境.为了深入地研究地表沉降形成的机理,从岩体应力场变化、地下水疏排、断层构造影响3个方面对造成煤矿区沉降的原因进行了比较全面地分析.同时,论述了平顶山煤田开采矿区地面沉降的发育现状,并根据丰富的岩移观测资料,确定了普遍适合本煤田各矿区的岩移参数,采用概率积分法对各矿区因采煤引发的地面最终沉降量进行了预测,预测煤田的最终沉降面积约198.07 km2.