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文章根据广东省云湛高速公路中间村隧道出口右线超浅埋(负埋深)偏压洞口的地形、地貌,采用了盖挖法设计施工方案,降低了洞口边仰坡的高度,减少了土石方数量,有效的减少了植被破坏,保护了环境,降低高边坡施工和后期运营安全风险,同时恢复地表施工期短,施工范围小,利于解决地表冲沟的排水,适合各类浅埋偏压隧道洞口段施工。
According to the topography and topography of ultra-shallow (negative depth) bias tunnel on the right exit of Zhongmuncun tunnel exit of Yunzhan Expressway in Guangdong Province, the cover excavation method was adopted to design and construct the plan, which reduced the elevation of the cave slope and reduced the The amount of earth and stone reduces the damage of vegetation effectively, protects the environment, reduces the safety risk of high slope construction and later operation, meanwhile shortens the construction period of the earth surface and shortens the construction scope, which helps to solve the drainage of surface gully and is suitable for all kinds of shallow buried partial Pressure tunnel opening section construction.