The Ak?akale Cave is located in the vicinity of the Arsa neighborhood within the boundaries of the Ak?akale village, Gümü?hane, Turkey. The cave is rich in cave formations(stalactite, stalagmite, cave pearl,...The Ak?akale Cave is located in the vicinity of the Arsa neighborhood within the boundaries of the Ak?akale village, Gümü?hane, Turkey. The cave is rich in cave formations(stalactite, stalagmite, cave pearl, cave flower, wall travertines). Thus, the appropriateness of opening the cave to visitors to boost tourism is of importance for the local and national economy. This study analyzes the stability of the Ak?akale Cave using a numerical analysis method. According to the results of the total displacement analysis, there are displacements in the entrance, ceiling, and sidewalls of the cave ranging from 1 mm to 48 mm. It seems that the entrance, ceiling, and sidewalls of the cave face a high risk of local or sudden collapse. According to the deformation analysis of the length section of the cave examined, local collapses may occur especially in the first 75 m from the entrance of the cave. We believe that this situation would not carry a risk for the Arsa neighborhood for now. In conclusion, the results of the stability analysis and in-situ observations showed clear evidence of former and ongoing cave-ins(collapses) and the Ak?akale Cave faces a high risk of local or sudden collapse. Thus, although the Ak?akale Cave is one of the most prominent karst caves in Turkey, it seems to be not appropriate to open the cave to tourist visits.展开更多
发育的隐伏岩溶是广州西部地区城市发展的重大地质隐患之一。利用大量岩溶钻孔数据,结合地层岩性、断裂构造、水文地质等资料,分析隐伏岩溶发育特征及控制因素。广州西部地区隐伏岩溶发育特征:在平面上,隐伏岩溶分布面广,呈带状分布;在...发育的隐伏岩溶是广州西部地区城市发展的重大地质隐患之一。利用大量岩溶钻孔数据,结合地层岩性、断裂构造、水文地质等资料,分析隐伏岩溶发育特征及控制因素。广州西部地区隐伏岩溶发育特征:在平面上,隐伏岩溶分布面广,呈带状分布;在垂向上,浅部溶洞主体为单—双层结构,多集中发育在-5~-20 m (埋深10~30 m),随深度增加,岩溶发育程度减弱。隐伏岩溶发育的主控因素除地层岩性外,断裂构造、不整合面、地下水活动等对岩溶的发育程度和发育空间位置具有控制作用。同时,在分析隐伏岩溶对城市发展的制约基础上,依据其发育特征及控制因素提出了防治对策与建议。展开更多
文摘The Ak?akale Cave is located in the vicinity of the Arsa neighborhood within the boundaries of the Ak?akale village, Gümü?hane, Turkey. The cave is rich in cave formations(stalactite, stalagmite, cave pearl, cave flower, wall travertines). Thus, the appropriateness of opening the cave to visitors to boost tourism is of importance for the local and national economy. This study analyzes the stability of the Ak?akale Cave using a numerical analysis method. According to the results of the total displacement analysis, there are displacements in the entrance, ceiling, and sidewalls of the cave ranging from 1 mm to 48 mm. It seems that the entrance, ceiling, and sidewalls of the cave face a high risk of local or sudden collapse. According to the deformation analysis of the length section of the cave examined, local collapses may occur especially in the first 75 m from the entrance of the cave. We believe that this situation would not carry a risk for the Arsa neighborhood for now. In conclusion, the results of the stability analysis and in-situ observations showed clear evidence of former and ongoing cave-ins(collapses) and the Ak?akale Cave faces a high risk of local or sudden collapse. Thus, although the Ak?akale Cave is one of the most prominent karst caves in Turkey, it seems to be not appropriate to open the cave to tourist visits.
文摘发育的隐伏岩溶是广州西部地区城市发展的重大地质隐患之一。利用大量岩溶钻孔数据,结合地层岩性、断裂构造、水文地质等资料,分析隐伏岩溶发育特征及控制因素。广州西部地区隐伏岩溶发育特征:在平面上,隐伏岩溶分布面广,呈带状分布;在垂向上,浅部溶洞主体为单—双层结构,多集中发育在-5~-20 m (埋深10~30 m),随深度增加,岩溶发育程度减弱。隐伏岩溶发育的主控因素除地层岩性外,断裂构造、不整合面、地下水活动等对岩溶的发育程度和发育空间位置具有控制作用。同时,在分析隐伏岩溶对城市发展的制约基础上,依据其发育特征及控制因素提出了防治对策与建议。
