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1. 发明专利

JP2000265778A LONG MULTI STEEL PIPE FOREPOLING METHOD 失效
公开(公告)号：JP2000265778A
公开(公告)日：2000-09-26
申请号：JP7205999
申请日：1999-03-17
申请人： KAJIMA CORP
发明人： SHIGEFUJI MASAHARU , KAGAHARA HIROSHI , FUKUNAGA YOSHIYUKI
IPC分类号： E21D9/04
摘要： PROBLEM TO BE SOLVED: To provide a steel pipe forepoling method in which a bit can be easily recovered even in excavation in a cohesive soil layer and a driven steel pipe can be easily removed so that the mouth of the driven steel pipe does not interfere with supports. SOLUTION: In this multi steel pipe forepoling method, a tunnel boring machine 5 is provided with steel pipes 1 as forepoling steel pipes and drill rods 2 housed in the steel pipes 1. A bit 3 is equipped at the tip of the drill bit 2 to drill driving holes for these steel pipes 1 at every specified distance along the vicinal position of the outer peripheral line of the tunnel section in the forward side of a cutting face and drive the steel pipes 1 into the natural ground E as forepoling steel pipes for the tunnel cutting face. A hardener is injected in the peripheral natural ground E while making use of the forepoling steel pipes as injection pipes for reinforcing the ground. In this forepoling steel pipe method, Left-in-place bits are used to recover only an inner bit, while leaving the tip of the bit 3 equipped in the tip of the drill rod 2, and the steel pipe 1 is fixed to the bit 3 to drive the pipe by drilling and pulling it in. A notch 1d is provided at the rear end of the steel pipe 1 to impart blows to cut it.

2. 发明专利

JP2015048264A モルタル、モルタル硬化体及び粉体組成物有权
标题翻译： MORTAR，MORTAR硬化体和粉末组合物
公开(公告)号：JP2015048264A
公开(公告)日：2015-03-16
申请号：JP2013179668
申请日：2013-08-30
申请人：鹿島建設株式会社 , Kajima Corp
发明人： SAKATA NOBORU , SANO SHINOBU , YAMADA TORU , FUKUNAGA YOSHIYUKI , KOBAYASHI KIYOSHI
IPC分类号： C04B28/04 , C04B20/00 , C04B24/06 , C04B24/38
摘要：【課題】本発明によれば、優れた凝結遅延効果を安定的に発揮することが可能なモルタル及びその硬化体を提供することができる。【解決手段】水と、ポルトランドセメントと、微粒分量が1質量%以下である細骨材と、凝結遅延剤とを含有する、モルタル。前記凝結遅延剤がオキシカルボン酸塩を含むことが好ましい。又、前記ポルトランドセメントが、ビーライトを40質量%以上含む低熱ポルトランドセメントであることが好ましい。ポリサッカライド系増粘剤を更に含有することが好ましい。【選択図】なし
摘要翻译：要解决的问题：提供能够稳定地显示出优异的凝固延迟效果的砂浆和硬化体。解决方案：提供含有水，波特兰水泥的砂浆，细颗粒量为1质量％以下的细骨料和设定缓凝剂。凝固缓凝剂优选含有羟基羧酸盐。波特兰水泥优选为含有40质量％以上的贝氏体的低热波特兰水泥。进一步含有多糖系增稠剂。

3. 发明专利

JP2000303776A INJECTING METHOD AND DEVICE IN STEEL PIPE PRELINING CONSTRUCTION METHOD 失效
公开(公告)号：JP2000303776A
公开(公告)日：2000-10-31
申请号：JP11048599
申请日：1999-04-19
申请人： KAJIMA CORP
发明人： SHIGEFUJI MASAHARU , KAGAHARA HIROSHI , FUKUNAGA YOSHIYUKI
IPC分类号： E02D3/12 , E21D9/04
摘要： PROBLEM TO BE SOLVED: To provide an injecting method and device in steel pipe prelining construction method capable of securing operators' safety by preventing an insert pipe from being pushed out as the result of the buildup of injection pressure, and of providing a uniform discharge by setting a plurality of discharge openings in predetermined positions or of solving the problem that the material injected is pushed out by a spring water and cannot be injected into the natural ground. SOLUTION: A prelining steel pipe 1 is placed in a tunnel working face, and a plurality of discharge holes are fastened in predetermined positions in an insert pipe 2 which is inserted into the steel pipe 1. Injection pipes 5 communicated with the outside of the rear end of the steel pipe 1 from the discharge openings are extended along the insert pipe 2 and a caulking device 3 is provided in a predetermined position. The insert pipe 2 is inserted into the steel pipe 1 and the inside of the steel pipe 1 is caulked by the caulking device 3. Injection hoses are connected to the ends of injection pipes located outside the steel pipe 1, whereby a material to be injected is injected into all the pipes at the same time and into the natural ground to reinforce the natural ground.

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