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辽宁省观音阁水库位于太子河中游,由于岩溶问题难予查清,勘测工作长达10年之久,其中第三坝址,右岸坝肩是根据地形地貌特征,在中奥陶系马家沟厚层石灰岩中选择了“合适”的位置。之后,在综合勘探过程中,发现了较大规模的岩溶塌陷,使大坝轴线位置不得不两次移位。随着工作的进展,岩溶塌陷底部的岩溶发育向题越来越复杂,水文工程地质条件也随之更加恶化,最后成为放弃三坝址的主要地质因素,使近10年的勘测工作全部废弃。
Guanyinge Reservoir in Liaoning Province is located in the middle reaches of Taizi River. As the karst problem is difficult to be identified, the survey has lasted for 10 years. The dam site of the third dam and the right bank are based on the topography of the Middle Ordovician Majiagou Thick limestone has chosen the “right” position. Later, in the course of comprehensive exploration, larger-scale karst collapse was found, shifting the dam axis position twice. With the progress of the work, the karst development problem at the bottom of karst collapse becomes more and more complicated, the hydrological engineering geological conditions also worsen, and finally become the main geological factor to abandon the Sanba site, which has abandoned nearly 10 years of survey work.