- 摘 要
-
(廣州市設計院， 廣州 510620)
［摘要］巖溶地區(qū)地質(zhì)環(huán)境復雜，基坑支護設計挑戰(zhàn)較大?；趲r溶地區(qū)的某基坑支護工程實例，一方面通過采用已施做的支護樁揭露的地質(zhì)情況修正地質(zhì)剖面中巖面線和溶洞分布情況的方法進行入巖深度的動態(tài)確定；另一方面通過注漿率判定錨索穿過的不明溶（土）洞大小和位置，合理調(diào)整錨索角度、位置等避開溶（土）洞。結(jié)果表明，對巖溶地區(qū)基坑支護工程支護樁進行動態(tài)設計確保了基坑安全可靠。
［關鍵詞］巖溶基坑； 動態(tài)設計； 樁錨支護； 嵌固深度； 錨索
中圖分類號：TU473文獻標識碼：A文章編號：1002-848X(2017)09-0094-04
Dynamic designing for pile-anchor support foundatin pit in karst area
Huang Junguang, Lin Zukai, Li Weike, Luo Yongjian
(Guangzhou Design Institute, Guangzhou 510620, China)
Abstract:As the geological environment in karst area is complex, the design of pile-anchor support present a grater challenge. Based on the project of pile-anchor support foundation pit in karst area, on the one hand, the embedding depth was dynamic determined; on the other hand, aaccording to the geilogical conditions exposed by the existed support pile, the geological profile and karst cave distribution is revised. Then, the angle and position of anchor cable were adjusted to advoid karst hole by judging the angle and position of karst hole according to the existed anchor cable. The results show that the dynamic design for pile-anchor support, ensures the safety and reliable foundation pit support and protection.
Keywords:karst excavation; dynamic designing; pile-anchor support; embedded depth; anchor rope
*國家自然科學基金項目（51608138）。
作者簡介：黃俊光，碩士，高級工程師，Email:hj020@126.com。
