摘要
该文针对宜宾东南部珙县-筠连县-兴文县-长宁一带二叠系茅口组灰岩作为建筑石料的可行性进行了研究.通过研究发现,研究区内二叠系茅口组灰岩主要出露于建武向斜南翼(筠连-巡司-洛表-王家)及珙长背斜的两翼(巡场-底硐-大河-石海-共乐-硐底),资源潜力巨大.根据测试结果,研究区内茅口组生物碎屑灰岩的饱水抗压强度、坚固性、压碎值、硫酸盐及硫化物、碱活性等指标满足建筑用石料的一般要求,该区域茅口组灰岩各项技术指标能达到Ⅰ级矿石要求.
Abstract
Based on studying the feasibility of Permian Maokou Formation limestone in Gongxian County,Junlian County,Xingwen County,Changning area in the southeast of Yibin,it is found that the Permian Maokou Formation limestone in the study area mainly lies in the south wing of Jianwu syncline(Junlian-Xunsi-Luobiuo-WangJia)and the two wings of Gongchang anticline(Xunchang-Didong-Dahe-Shihai-Gongle-Dongdi),which has great resource potential.The results show that the water-saturated compressive strength,firmness,crushing value,sulfate,sulfide and alkali activity of Maokou Formation bioclastic limestone in the study area meet the general requirements of building stones.The technical indexes of Maokou Formation limestone in this area can meet the requirements of grade Ⅰ ore.
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