On Some Problems of Exploration Evaluation of the Sedimentary Type Diasporic Bauxite Deposits: Examples from the Bauxite Deposits in Northern Guizhou
详细信息
- 责任者：Liao Youchang (106 Geological Group ; Guizhou Bureau of Geology and Mineral Exploration and Development ; Zunyi 563000 ; China)
- 刊名：Geology and Prospecting
- 出版年：2013
- 卷期：49(2)
- 关键词：铝土矿 ; bauxite deposit ; 沉积矿床 ; sedimentary deposit ; 贵州 ; Guizhou Province
- 页码：p.274-279
- 图表：illus., 2 tables, 19 refs.
- 分类号：1001
- issnNo：ISSN0495-5331
- isbnNo：CN11-2043/P
摘要
This paper discusses four problems encountered in exploration evaluation of the sedimentary type diasporic bauxite deposits,taking the bauxite deposits in northern Guizhou as examples.We suggest that:(1) The exploration types should include initial,provisional and final determinations corresponding to the survey,detailed survey and exploration stages,respectively.(2) "Diamond holes" rather than "rectangular holes" are used to solve the non integral multiple problem of changing exploration types and engineering control spacing.(3) The applicable scope of "surface engineering spacing encryption a time" is open mining and ore bodies in the "denuded zone".In the areas where surface outcrop lines are linearly distributed and there are overlying rocks or the rocks have been weathered strongly,but the original rock bedding is still preserved,the same exploration type and exploration stage can be assigned by the same network and same distance.(4) During the general and detail survey stages,the A/S values of engineering ore body boundary can be taken as 1.8~2.6 to ensure that the A/S values of lump-segment ore bodies meet industrial requirements.