岩溶注浆加固既有线狮子山车站路基工程

Grouting Karst to Reinforce Subgrade of Existing Shizishan Railway Station

我国早期的铁路既有线,地基处理薄弱,随着铁路运行速度的提高,特别是灰岩地区的地面塌陷已严重影响铁路的运营安全。既有线狮子山车站路基,K63～K65段基岩为灰岩,岩溶非常发育,车站站场及附近场地多次发生塌陷,严重影响既有线行车安全。在对车站范围进行了勘察,基本掌握了岩溶发育情况后,采用岩溶注浆加固处理,工程取得了圆满成功,为站内行车安全提供了保证。

The early existing railway lines in China are featured by weak subgrade works, so now with speed - up of rail- way, its running safety has been seriously affected by ground collapse, especially in limestone area. Because the subgrade of Shizishan station and the bedrock in the section of K63 - K65 are limestone with developed karst, collapse happens many times in the station and yard as well as the adjacent areas, which brings serious influence on the running safety. After survey in the scope of station and basic control of the conditions of karst development, grouting karst is adopted to ensure the safety in the station.