摘要
岩溶区建大型尾矿坝、尾矿库将会产生一些特殊的工程地质问题。特别是当尾矿物中含有有害物质时,对工程地质问题的准确评价非常重要。本文根据大峪口磷石膏渣场、渣坝的现场测试和室内试验资科,对该磷石膏渣场、渣坝的工程地质问题进行了分析研究,在工程地质条件分析的基础上,指出其主要的工程地质问题是坝基渗漏和环境污染问题。渗漏将沿岩溶通道产在渗透途径中,仅靠土、岩石对有害物质的吸附作用是不够的,浆液将会刘下游水源和农田造成污染,影响环境质量。文中提出了处理措施。在岩溶区建尾犷库和尾矿坝,查明岩溶发育规律及连通性是关键。根据现场工作,认为电磁波透视是一种有效的方法。
Some special problems in engineering geology will be produced when a large-scale tailing storage and a tailing dam have been built in a karst area. Especially when tailing contains harmful substance, the exact appraisal of engineering geologic problems will be very important. Based on the data from field determination and indoor experiments and analysis of engineering geologic conditions of the phosphorus-gypsum tailing storage and tailing dam. the seepage and envi- ronment pollution have been recognized as the main engineering geological problems. Seepage usually takes place along karst passageways and the soil and rocks around the passageways can not fully adsorb the poisonous substance which pollutes water sources and farmland in lower reaches Some handling measures have been advanced in the paper. The author thinks that the key problem for the construction of tailing storage and tailing dam is to find out the law of the karst development and coherence of pessageways in the karst area. Moreover, the electromagnetic wave perspective is recognized as an effective method according to the field study.
