| 乌蒙山地区岩溶地下水流系统结构及其找水应用 |
| |
| 引用本文： | 郭蕾蕾,魏良帅,黄安邦,舒勤峰.乌蒙山地区岩溶地下水流系统结构及其找水应用[J].地质科技通报,2022,41(1):146. |
| |
| 作者姓名： | 郭蕾蕾 魏良帅 黄安邦 舒勤峰 |
| |
| 基金项目： | 中国地质调查局项目DD20160287 |
| |
| 摘 要： | 为推动乌蒙山贫困缺水区生态环境建设、地下水资源合理利用，以昭通市作为重点调查区，基于地质调查、泉流量统计、水质检测，展开岩溶地下水富集规律及物探找水方法的研究。结果表明:①研究区岩溶地下水系统以条带岭谷型、埋藏型为主。条带岭谷型岩溶地下水系统以现代岩溶为主，目标含水层多、发育深度有限、岩溶发育及富水程度差异大，富水块段为背斜核部及两翼、向斜核部、断层影响带；埋藏型岩溶地下水系统以古岩溶为主，目标含水层单一、发育深度较深且极不均匀，富水块段为断陷谷盆埋藏的古岩溶。②地下水化学类型以HCO3型、HCO3·SO4型为主，条带岭谷型、埋藏型岩溶水分别占96.73%，92.93%，水质总体较好，综合水质评价Ⅰ~Ⅲ类水占比分别为80.84%，64.41%。③建议对>50 L/s大泉进行提引、丰储冬用，对富水块段进行综合物探探测和钻探验证的方法找水。④综合物探找水方法:先通过高密度电法、联合剖面法查明岩溶破碎带及断层，再激电测深确定极化率高的含水层，最后综合测井和钻孔揭露确定具体出水段及涌水量，找水成功率为86.67%，适用于条带岭谷型及浅埋岩溶地下水。
|
| 关 键 词： | 岩溶地下水系统 条带岭谷 富水块段 物探 找水 |
| 收稿时间： | 2021-10-25 |
Structure of karst groundwater system and its water exploration in Wumeng Mountain area |
| |
| Abstract: | The Wumeng Mountain Contiguous Zone in China always suffers from deficiency of groundwater resources.The Zhaotong area of Yunnan Provience belongs to the Wumeng Mountain area, which was the key area.We carried out geological survey, spring flow statistics and water quality evaluation in karst stratum.The strip karst area, which always located in ridge-valley area, with many target aquifers, karst shallow.Groundwater was concentrated in the core of anticlinoria and both wings, the core of syncline and fault zone.The buried karst water mainly concentrated in the paleo-karst stratum in Zhaolu fault basin, and covered below Tertiary system.Most chemical type of groundwater was determined as HCO3 and HCO3·SO4 type.The strip and buried karst water account for 96.73% and 92.93% respectively.The comprehensive water quality evaluation results of 80.84% simple analysis and 64.41% total analysis were classified as Ⅰ-Ⅲ.We suggest that large flow springs more than 50 L/s should be extracted, diverted and stored for winter use.Combined with geophysical exploration and drilling verification, the target aquifer was more successfully found in water-rich section of strip and shallow buried karst areas.Firstly, the high-density electrical method and combined profile method were conducted to find out the karst fracture zone and fault.Then, the IP sounding was set to explore the depth of the aquifer with high polarizability.Finally, the water supply segment and water inflow were determined by comprehensive logging and drilling.The rate of successfully extracting water was 86.67%.Then, we could recommend the well location. |
| |
| Keywords: | |
|
| 点击此处可从《地质科技通报》浏览原始摘要信息 |
|
点击此处可从《地质科技通报》下载全文 |
|
