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地裂缝活动对水位下降有重要影响。在进行工程地质勘测时,需要明确地裂缝活动对水位的影响方式及水位变化趋势。基于国内外研究,本文研究地裂缝附近潜水流动特征,分析了岩土压密机理,并讨论了地下水开采与地裂缝的关系。研究表明:地裂缝存在对地下水具有隔水作用,可导致上、下盘之间地下水流量存在差异,上盘流量显著小于下盘;下盘地下水开采导致水位下降更快,加速地面沉降,从而加剧地裂缝活动。研究成果希望对地下水开采和跨地裂缝工程设计提供参考。
Ground fissure activities have a significant impact on the water level. During engineering geological survey, it is necessary to clarify the impact of the crack activity on the water level and the trend of water level change. Based on the researches both at home and abroad, this paper studies the characteristics of the submarine fissures in the submarine fissures, analyzes the compaction mechanism of the geotechnics, and discusses the relationship between groundwater exploitation and ground fissures. The results show that the existence of ground fissures has water-resisting effect on groundwater, which leads to the differences in groundwater flow between the upper and lower plates. The upper plate flow rate is significantly less than that of the lower plate. Groundwater mining in the lower plate causes the water level to fall faster and accelerates the land subsidence, thus aggravating Ground fissure activity. The results of the study hope to provide references for groundwater exploitation and engineering design of ground fissures.