水力压裂技术对江西相山热液铀矿成因的启示

摘要

Hydraulic fracturing technology is one of the key technologies in shale gas production.It provides an important inspiration for us to study the genesis of the Xiangshan hydrothermal uranium deposit in Jiangxi.That is,(1) the cryptoexplosion occurred obviously in the late stage of intrusive magmatic activity in Xiangshan area of South China,(2) the uranium source of the hydrothermal uranium deposits,occured in the Xiangshan volcano intrusive complex,may be the volcano intrusive rock in itself,(3) the uranium is transported mainly in the form of uranyl carbonate complex along the hidden burst gap,(4) the precipitation of uranium is caused by the reduction of the pressure after the hidden explosion earthquake,(5) the ctyptoexplosive clastic rock is an important ore-forming geological body,(6) the hydraulic fracturing is the dynamic mechanism of uranium mineralization,which is the inevitable outcome of the hidden explosion.%水力压裂技术是页岩气开采的关键技术,水力压裂技术对江西相山热液铀矿成因研究提供了重要启示.华南相山矿田火山侵入岩浆活动频繁,在不同类型的侵入岩成岩的晚期发生了明显的隐爆作用,产于相山火山侵入杂岩体中的热液铀矿床,铀等成矿物质主要来源于火山侵入杂岩本身,铀的搬运主要是以碳酸铀酰络合物形式沿隐爆裂隙进行,铀的沉淀是隐爆地震发生后的降压作用引起的,隐爆碎屑岩是主要的成矿地质体,水力压裂是铀成矿的动力学机制,铀矿化是隐爆作用的必然产物.