土洞溶洞处理施工方案

目 录 、壱工程概况 ································································· 1 、弐工程地质情况 ··························································· 2 参、 土洞(溶洞)充填灌浆施工关键点 ···································· 7 四、 袖阀管法灌浆再加固方案 ············································ 10 四、 施工组织方案 ··························································· 13 伍、 质量确保方法 ··························································· 15 六、 安全施工方法 ··························································· 16 七、 文明施工方法 ··························································· 17 八、 附关于地质资料及基础平面图 一、 工程概况 建设单位：XXXXX 设计单位：XXXXX 勘察单位：XXXXX 监理单位：XXXXX 施工单位：XXXXX XXXX 位于 XX 市街口，东临 XX 市 XX 塔，北临 XX 村，南临 XX 河。三期高层 R-e-7～9 栋位于小区东北侧，该栋号为地下 1 层，地上 27 层，建筑高度 83.8m，基底面积 1709.36，建筑面积㎡39626.23。基础形式为㎡静压预应力混凝土管桩，桩型为 PHC-500AB(125)-C80,单桩竖向承载力特征值为 KN，部分单层地下室为抗拔桩，单桩竖向抗拔承载力特征值为350KN,要求桩端持力层为强风化粉砂岩，桩端进入持力层≥1m。 依照地质勘探资料，场地存在土洞及溶洞，其大小不一，分布亦无规律；经探明土洞 3 处、溶洞 2 处。为确保建筑物安全，必须给予土洞（溶洞）进行处理。 因为三期已建栋号 R-c-1～3 及 R-d-1～3 栋均存在着土洞（溶洞），且已成功顺利地处理这类不良地责问题，处理方案为灌浆处理。所以，依照之前施工经验， R-e-7～9 栋亦拟做相同处理方案：（1）地质勘察已探明土洞、...