【摘要】 1980年以来，豫北安阳至清丰水准测线上出现了较大的地面沉降漏斗。通过对标石稳定性、采矿影响、地壳构造运动特别是地下水与地壳形变关系的分析研究，认为漏斗形成的原因与地下水和地层有关，并非地震前兆异常。更多还原

【Abstract】 A large ground subsidence funnel has been found in the leveling line of Anyang-Qingfeng in north Henan since 1980. According to the analysis and study of markstone’s stability, mining effect and crustal tectonic movement as well as especially the relation between ground water and crustal deformation, the contributing factor of that is considered to have a relation to ground water and sedimentary layer and that is not an earthquake precursor anomaly.更多还原