Foundation grouting apparatus and method thereof

Application Number: 00103371
Application Date: 2000.03.02
Publication Number: 1266129
Publication Date: 2000.09.13
Priority Information: 1999/3/9 JP P11-61252
International: E02D3/12
Applicant(s) Name: Kyokado Engineering Co., Ltd.
Inventor(s) Name: Shimada Shunsuke
Patent Agency Code: 11243
Patent Agent: cang jianmeng
Abstract To prevent disorder penetration of a curing agent on each stage because of blockade of a curing agent discharge port due to a cavity on a drilled hole on the outside of an outer tube, to carry out injection of the curing agent favorably in construction performance and at one time in all stages, to shorten a construction period and to reduce cost in duplex tube double packer injection construction. Bag bodies 26 provided on a plural number of stages in the axial direction of an outer tube 21 are expanded and closely fastened on a hole wall of a drilled hole 7 without interposing seal grout in the drilled hole formed on a natural ground, and the ground is consolidated. Consequently, it is possible to constantly and penetratively injecting specified quantity of a curing agent in the ground natural ground in large quantity as a whole as designed and to certainly construct a large diametrical and lengthy molded body under the ground regardless of resistance pressure and falling of the hole wall through a pressure space between each of packers from exhaust ports of exhaust nozzles on a plural number of the stages provided on an inner tube and to certainly construct a large diametrical lengthy molded body underground even when a hole wall falling phenomenon, etc., are caused.