平果铝土矿采空区的工程复垦技术

Engineering Reclamation Technology for Mined Area in Pingguo Bauxite Mine

平果铝土矿采空区的工程复垦工作具有地质条件复杂、面积广、工作量大、技术要求复杂等特性。结合多年来的研究成果和工作实践,从设计、施工、土壤改良等方面对平果铝土矿的工程复垦技术进行了介绍。提出了一套从“采准-回采-尾矿处理-采空区工程复垦-采空区生态快速重建”的一体化可持续发展模式,给出了石芽底板采空区的工程复垦施工和粘土底板采空区的工程复垦施工方法;对平果铝土矿独特的地质特征及由此造成的采空区复垦取土困难和土壤改良等问题进行了探讨。

The engineering reclamation in the mined area in Pingguo Bauxite Mine is characterized by complex geology, wide area, large amount of work and complex technical requirements. Based on the many years＂ research and practice, the engineering reclamation technology for Pingguo Bauxite Mine is presented from the aspects of design, construction and soil improvement. An integrated sustainable development mode is proposed which consists of preparation, extraction, railings disposal, engineering reclamation of mined area and rapid reconstruction of the ecology in mined area. The construction methods for the engineering reclamation in both clint-floor mined area and clay-floor mined area are also suggested. Discussion is made on the difficulty of soil getting for the reclamation and soil improvement due to the unique geological characters of Pingguog bauxite.