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A platform for research: civil engineering, architecture and urbanism
CHEMICAL INJECTION PIPE AND CHEMICAL INJECTION METHOD
PROBLEM TO BE SOLVED: To provide a chemical injection pipe by which a chemical injection process at a plurality of positions can be performed for a short time so that the ground improvement work can be completed efficiently.SOLUTION: A chemical injection pipe 100 comprises an injection pipe body 10, two packers P1 and P2 which block the inner wall of an injection outer pipe by air injection, an air passage 13 which injects air L3 into two of the packers P1 and P2 and which is extended to the downstream side of the second packer P2, a first injection port 1 which is disposed between two of the packers P1 and P2 so as to inject a first chemical liquid L1 into the foundation, a first chemical flow path 11 for guiding the first chemical liquid L1 to the first injection port 1, a second chemical flow path 12 extended to the downstream side of the second packer P2 so as to guide a second chemical liquid L2 to a second injection port 2, and a connection part 3 which is disposed on the downstream side of the second packer P2 so as to connect an extended injection pipe 200 having the second injection port 2.
【課題】複数個所における薬液注入プロセスを短時間で行うことができ、結果的に地盤改良作業を効率的に完了させることのできる薬液注入管を提供すること。【解決手段】薬液注入管１００は、注入管本体１０と、エア注入により注入外管の内壁を閉塞する２つのパッカーＰ１，Ｐ２と、２つのパッカーＰ１，Ｐ２にエアＬ３を注入し、第２パッカーＰ２の下流側へと延長されたエア流路１３と、第１薬液Ｌ１を地盤へと注入するために２つのパッカーＰ１，Ｐ２間に配置された第１注入口１と、第１注入口１へと第１薬液Ｌ１を導く第１薬液流路１１と、第２注入口２へと第２薬液Ｌ２を導くために第２パッカーＰ２の下流側へと延長された第２薬液流路１２と、第２注入口２を有する延長注入管２００を連結するために第２パッカーＰ２の下流側に配置された連結部３と、を有する。【選択図】図２
CHEMICAL INJECTION PIPE AND CHEMICAL INJECTION METHOD
PROBLEM TO BE SOLVED: To provide a chemical injection pipe by which a chemical injection process at a plurality of positions can be performed for a short time so that the ground improvement work can be completed efficiently.SOLUTION: A chemical injection pipe 100 comprises an injection pipe body 10, two packers P1 and P2 which block the inner wall of an injection outer pipe by air injection, an air passage 13 which injects air L3 into two of the packers P1 and P2 and which is extended to the downstream side of the second packer P2, a first injection port 1 which is disposed between two of the packers P1 and P2 so as to inject a first chemical liquid L1 into the foundation, a first chemical flow path 11 for guiding the first chemical liquid L1 to the first injection port 1, a second chemical flow path 12 extended to the downstream side of the second packer P2 so as to guide a second chemical liquid L2 to a second injection port 2, and a connection part 3 which is disposed on the downstream side of the second packer P2 so as to connect an extended injection pipe 200 having the second injection port 2.
【課題】複数個所における薬液注入プロセスを短時間で行うことができ、結果的に地盤改良作業を効率的に完了させることのできる薬液注入管を提供すること。【解決手段】薬液注入管１００は、注入管本体１０と、エア注入により注入外管の内壁を閉塞する２つのパッカーＰ１，Ｐ２と、２つのパッカーＰ１，Ｐ２にエアＬ３を注入し、第２パッカーＰ２の下流側へと延長されたエア流路１３と、第１薬液Ｌ１を地盤へと注入するために２つのパッカーＰ１，Ｐ２間に配置された第１注入口１と、第１注入口１へと第１薬液Ｌ１を導く第１薬液流路１１と、第２注入口２へと第２薬液Ｌ２を導くために第２パッカーＰ２の下流側へと延長された第２薬液流路１２と、第２注入口２を有する延長注入管２００を連結するために第２パッカーＰ２の下流側に配置された連結部３と、を有する。【選択図】図２
CHEMICAL INJECTION PIPE AND CHEMICAL INJECTION METHOD
薬液注入管及び薬液注入工法
HAYASHIDA AKIRA (author) / NAGAOKA FUJIHIKO (author)
2016-01-18
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2021
CHEMICAL INJECTION CONSTRUCTION METHOD AND CHEMICAL INJECTION DEVICE
| European Patent Office | 2018