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江西省上宜铜线清水桥过去桥面常被水淹,今年重建时,提高了桥面的高度,因而增加了桥头路基接线土方,今年雨季,由于洪水为路基所阻,被水冲刷严重。五月上旬,桥头路基土方尚未全部完成之际,在上高岸被冲毁200多方,有砌筑护坡的必要。但该桥附近缺乏可做护坡的石料,为了适应需要并克服缺料困难,南昌公路运输局李其羽工程师创议用石灰三合土代替石料做护坡,经过洪水再次冲刷的严重考验,证明效果良好。清水桥桥头土方护坡厚度平均约15公分,平均高为3.5公尺,长370公尺。土、石灰、砂和石子的配合为1:1:2:3.5。施工方法也很简单,即在路基边坡上,挖成
During the reconstruction of this year, the height of bridge deck was increased due to flooding of the bridge deck of Qingshui Bridge in Shangyi City, Jiangxi Province. As a result, the earthwork at the bridge head subgrade was increased. Due to the flood blocked by the subgrade, it was seriously washed by water. In early May, when the earthwork of the bridgehead subgrade was not yet completed, it was necessary to destroy more than 200 sides in Shanggao Bank and have masonry slope protection. However, in the vicinity of the bridge, there is a lack of stone materials that can be used for slope protection. In order to meet the needs and overcome the shortage of materials, Li Qiyu, an engineer from Nanchang Road Transport Bureau, proposed to use lime-triacetate instead of stone for slope protection. Qingshuiqiao Qiaotou earthwork slope protection average thickness of about 15 cm, with an average height of 3.5 meters, 370 meters long. Soil, lime, sand and gravel with 1: 1: 2: 3.5. The construction method is also very simple, that is, in the subgrade slope, dug into