| 苏再非,周艳君.隐伏岩溶地基稳定性探测及评价指标的确定[J].矿产勘查,2024,15(S2):583-592 |
| 隐伏岩溶地基稳定性探测及评价指标的确定 |
| Determination of stability detection and evaluation index of buried karst foundation |
| 投稿时间：2024-04-27 |
| DOI：10.20008/j.kckc.2024s2076 |
| 中文关键词: 地下水 岩溶 地基 数据 自动化 |
| 英文关键词: groundwater karst ground data automation |
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| 中文摘要: |
| 当前隐伏岩溶地基的稳定性探测和评价较为困难。本文依托广花盆地内白云机场 T3站基坑水文地质专项勘察项目的群井水头法连通试验，采用同步可视化自动化数据采集系统进行数据采集，采用以地质勘探为基础，以水文地质试验为手段的综合勘探方法，建立以水力传导速率、最大水力坡度、水位标高时间变化曲线形态特征为指标的隐伏岩溶地基稳定性分类及评价方法。将隐伏岩溶地基稳定性划分为稳定、基本稳定、不稳定和极不稳定 4个类型。通过工程实践验证，以地质为基础，以地下水为媒介的综合探测方法准确有效，以水动力特征为指标的隐伏岩溶地基稳定性评价指标科学合理。 |
| 英文摘要: |
| At present，it is difficult to detect and evaluate the stability of buried karst foundation. The waterhead connection test of a group well is being conducted as part of the special hydrogeological investigation project， based on the foundation pit of T3 station at Baiyun Airport in Guanghua Basin. The synchronous visual automaticdata acquisition system is utilized to guarantee the veracity and dependability of the gathered data. In the comprehensive exploration method based on geological and hydrogeological testing，a classification and evaluation method for the stability of buried karst foundations is established using hydraulic conductivity rate，maximum hydraulic slope，and temporal water level elevation curve as indicators. The stability of buried karst foundation canbe categorized into four types:stable，generally stable，unstable，and highly unstable. Through engineering practice，it has been demonstrated that the comprehensive detection method based on geology and utilizinggroundwater as the medium is accurate and effective. The evaluation index for assessing the stability of buried karstfoundation，with hydrodynamic characteristics as the primary focus，is both scientific and rational. |
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