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| 基于井口涌水量变化类型判断岩溶含水层厚度 |
| Karst Aquifer Thickness Study Based on Changing Type of the Drilling Water Outflow |
| 投稿时间：2014-07-12 修订日期：2015-05-12 |
| DOI：10.14050/j.cnki.1672-9250.2015.05.012 |
| 中文关键词: 井口涌水量;变化类型;岩溶;含水层厚度 |
| 英文关键词: drilling water outflow;changing type;karst;aquifer thickness |
| 基金项目:国家科技支撑计划(2014BAB03B02);国家973项目(2013CB956704);贵州省科技支撑计划([2012]6015);贵州省农业攻关项目([2014]3039);贵阳市科技局项目([2012205]);"西部之光"之西部博士专项([2012]179)。 |
| 作者 | 单位 | | 王伟1, 陈登齐1,2, 张琳1,3 | 1. 贵州地质矿产勘查开发局111 地质大队, 贵阳 550008
2. 中国地质大学(武汉)环境学院, 武汉 430074
3. 中国地质大学(武汉)资源学院, 武汉 430074 |
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| 中文摘要: |
| 针对含水相对均匀的溶洞-裂隙水含水岩组,为判断岩溶含水层厚度,通过对空气潜孔锤钻进工艺施工钻孔井口涌水量变化进行分析,结果发现:利用该工艺施工的钻孔井口涌水量一般会出现稳定型、降低型和增长型三种变化类型;井口涌水量变化类型反映了岩溶含水层是空间尺度上发育的垂向地下水系统,具有分层特征,其厚度与碳酸盐岩岩溶化程度的不均一性耦合,体现了碳酸盐岩岩体内不同空隙的发育规模、密度及其相互间的联系程度;明确了地下水埋深状况以及含水层的构成条件。故采用空气潜孔锤钻进工艺施工的钻孔,在非干孔情形下,可以利用井口涌水量的变化类型判断岩溶含水层厚度。 |
| 英文摘要: |
| To judge the karst aquifer thickness, air DTH hammer drilling technology was employed to study drilling water outflow in karst cave-crack area. Three changing types of drilling water outflow, stable type, decreasing type and increasing type were found. Results show that the karst aquifer is vertical groundwater system in spatial scales development and it has the correlation with drilling water outflow. The stratum thickness and karst degree of carbonate rock are interrelated with void developing scale and density of carbonate rock. It shows the embedded depth of groundwater conditions and the structure of the aquifer. In conclusion, using air DTH hammer drilling technology can evaluate the karst aquifer thickness by the changing type of drilling water outflow, except the situation of drill hole without water. |
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