Salt caverns are underground cavity formed by drilling and water circular melting salt in underground salt layer.
盐穴就是在地下盐层中通过钻井，利用水循环的方法，将盐层溶解，最终形成一个体积较大的空洞。
Heavy rains from tropical storm Agatha may also have overloaded underground sewage or drainage pipes, leading to a growing cavity that eventually collapsed, Bonis speculated.
博尼斯推测，热带风暴“阿加莎”带来的强降雨，同时也加重了地下排水管道的负担，致使不断变大的地下洞穴最终塌陷。
Natural sinkholes generally form when heavy, water-saturated soil causes the roof of an underground limestone cavity to collapse, or when water widens a natural fracture in limestone bedrock.
一般自然灰岩坑形成机理是由于有份量的水饱和土导致地下石灰岩洞顶层坍塌，或者由于水加宽了石灰岩床的天然裂缝而导致。
The formulae for dynamic calculations of underground rock cavity with liner are also given here.
文中还给出了有衬砌的地下岩洞动力计算方法。
The study results show that the activity of underground water plays a key role in the whole process from the cavity formation to the occurrence of ground collapse.
研究结果表明，地下水的活动在土洞的形成到地表塌陷产生的全过程中起着关键性的作用。
The underground salt cavity created by solution mining used for storage has great advantages over other storage methods.
利用水溶开采技术建造的地下岩盐溶腔用于存储与其它存储方法相比具有很大的优势。
The underground salt cavity created by solution mining used for storage has great advantages over other storage methods.
利用水溶开采技术建造的地下岩盐溶腔用于存储与其它存储方法相比具有很大的优势。
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