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    • 21. 发明专利
    • Curved boring method
    • 弯曲镗孔方法
    • JP2009041301A
    • 2009-02-26
    • JP2007209009
    • 2007-08-10
    • Penta Ocean Construction Co Ltd五洋建設株式会社
    • UEDA MASAKIMOMOSE YASUHIKOYANAMI SHUICHIRO
    • E21B21/08E21B7/04
    • PROBLEM TO BE SOLVED: To provide a curved boring method for boring the natural ground without producing disturbance of the natural ground, that can cause troubles on soil improvement by chemical injection in a subsequent process. SOLUTION: In implementation of the curved boring method, there is provided a double-pipe excavating rod 22 which is set up by penetrating an inner pipe 2 with flexibility into the center of an outer pipe 1 with flexibility. An excavating bit 5 connected to the tip of the inner pipe 2 is protruded from the tip of the excavating rod 22, and slurry for excavation is injected from an injection nozzle 6 attached to the tip of the excavating bit 5 via the inner pipe 2. Further a slurry suction port 8 is formed in the vicinity of the tip of the outer pipe, and the slurry for excavation injected from the injection nozzle 6 is sucked from the slurry suction port 8 together with excavated soil, by a vacuum 9 on the ground. The excavating rod 22 is insertable into the ground via a guide pipe 25 inserted into the ground from above the ground, and the guide pipe 25 communicates with an auxiliary slurry feeding channel 30, on the ground, to thereby achieve suction of the auxiliary slurry fed from the auxiliary slurry filling channel 30 together with the slurry for excavation, from the slurry suction port 8. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种用于镗削天然地面而不产生自然地面的弯曲镗孔方法,这可能会在随后的过程中通过化学喷射引起土壤改良的麻烦。 解决方案:在弯曲镗孔方法的实施中,提供了一种双管道挖掘杆22,其通过柔性地将内管2以柔性方式穿入外管1的中心而设置。 与内管2的前端连接的挖掘钻头5从挖掘杆22的前端突出,通过内管2从安装在挖掘钻头5的前端的喷射喷嘴6喷出挖掘用浆料。 此外,在外管附近形成有浆料吸入口8,从喷嘴6喷出的挖掘用浆料与挖掘土壤一起从泥浆吸入口8被地面上的真空9吸入 。 挖掘杆22通过从地面上插入地面的引导管25可插入地面,引导管25与地面上的辅助浆料供给通道30连通,从而实现供给的辅助浆料的抽吸 从辅助浆料填充通道30与浆料一起从浆料吸入口8排出。(C)2009年,JPO&INPIT
    • 22. 发明专利
    • DRAIN DRIVING METHOD AND DRAIN DRIVING APPARATUS
    • JP2003227128A
    • 2003-08-15
    • JP2002259491
    • 2002-09-05
    • PENTA OCEAN CONSTRUCTIONKINJO RUBBER CO LTD
    • UEDA MASAKIIKEDA SHOZOSUGIHARA HIROAKIKIMURA MICHIHIRO
    • E02D3/10
    • PROBLEM TO BE SOLVED: To eliminate an inconvenience of a conventional drain driving method and a conventional drain driving apparatus, such as an increase in construction cost, because the conventional drain driving method requires additional preceding excavation by a machine or employment of a large machine if the ground is cohesive ground mixed with mudstone, lower ground of cement solidified soil, or ground mixed with hard soil such as sand gravel layer lower ground. SOLUTION: According to a new drain driving method and a new drain driving apparatus, a casing having an acute head formed at the tip thereof or having a breaker attached to the tip thereof is driven to hard ground together with a board drain, and the hard ground is crushed by the breaker at the tip. Then, the casing is driven to soft ground, and the breaker and the casing are drawn from the soft ground while the drain is left as it is. A crushing bit of the breaker may be stored in the casing as needed. Alternatively, the casing having a boring head with closed blades attached to the tip thereof is driven to the hard ground together with the board drain, and the boring head has its blades expanded to crush the hard ground. Then, the casing is driven to the soft ground by closing the blades of the boring head, and the boring head and the casing are drawn from the soft ground while the drain is left as it is. COPYRIGHT: (C)2003,JPO
    • 23. 发明专利
    • NATURAL GROUND SUPPORTING METHOD IN BACKFILLING MATERIAL GROUTING REGION FOR SHIELD TUNNEL
    • JP2000096991A
    • 2000-04-04
    • JP28355998
    • 1998-09-21
    • PENTA OCEAN CONSTRUCTION
    • MIMURA MASAOUEDA MASAKI
    • E21D11/00
    • PROBLEM TO BE SOLVED: To grout a required amount of a backfilling material reliably by reducing looseness in natural ground by providing a plurality of flexible rods extending outwardly in radial direction in the backfilling material grouting region in the outer periphery of the segments of a shield tunnel. SOLUTION: A flexible rod 8 made of hard rubber or a synthetic resin at the outer periphery of a segment 4 is vertically fixed in peripheral direction and the natural ground is supported. As an example of fixing method, rods 8 are embedded in peripheral direction on the outer peripheral plane of a ring shaped base plate 9 and are fixed to outer periphery of a segment 4 with an adhesive. Since the rods 8 used as a backfilling material are arranged at the inner side of a skin plate 1 of a shield machine at the outer side of the segment 4, if the segment 4 is pulled out from the skin plate 1, the rods 8 rise immediately from a deflected state, instantly support the natural ground facing the tail clearance space and prevent looseness in the natural ground. As a result, tail clearance can be secured and a required grouting amount of the backfilling material 6 can be placed.
    • 27. 发明专利
    • FIREPROOF JOINT STRUCTURE BETWEEN SEGMENTS FOR SHIELD TUNNEL
    • JP2002227594A
    • 2002-08-14
    • JP2001028990
    • 2001-02-06
    • PENTA OCEAN CONSTRUCTION
    • TAKAHASHI HARUOUEDA MASAKI
    • E21D11/04E21D11/38
    • PROBLEM TO BE SOLVED: To provide a fireproof joint structure for a shield tunnel by means of a segment with a tenon preventing the deterioration of an object provided between inclusions such as a seal material and a share strip when a concrete surface reaches a temperature of 380 deg.C which is a criterion of an immersed tunnel in the Netherlands. SOLUTION: Heat-resistant ventilation shut-off materials 11 are provided at positions where join faces 1a, 1b approach side fringe parts on inner faces of the segments between the join faces 1a and 1b around the segments 1. The ventilation shut-off material 11 is provided by forming a groove 10 for fitting the ventilation shut-off material in the arrangement in which the segments to be joined mutually oppose mutually between them at the positions where the join faces around he segments approach the side fringe parts on the inner faces of the segments and fitting the heat- resistant ventilation shut-off materials 11 in the grooves, respectively, to seal the join faces or by providing recessed parts for caulking in the side fringe parts on the inner faces of the segments of the join faces around the segments and filling a caulking material into a cavity for caulking formed by the recessed parts opposing mutually between the segments to be joined mutually.