涌砂 meaning in English

boil of sand
boiling of sand

Comprehensive treatment of the gushing water section of sonnan tunnel
涌砂原因分析及综合整治措施
The geological conditions are very complicated in hejiazhai tunnel which is located in guizhou shuibo railway , this tunnel is named " mashed tunnel " with the most difficult geological conditions such as the high dense gas and developed karst and gushing water assembled together , the geological hazards like the gushing water and sand , the collapse of tunnel , surface subsidence and slide , cracking of tunnel lining were often happened during construction period
摘要贵州水柏铁路何家寨隧道，工程地质条件极其复杂，集“高瓦斯、强岩溶、大涌水”为一体，施工期间曾发生多次涌水涌砂、洞内坍方、地表塌陷与滑坡、支护衬砌开裂变形等地质灾害，堪称水柏铁路施工难度最大的“烂洞子” 。