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1. 发明专利

JPH11324583A DIAMETER EXPANSION TYPE SIMPLE LINER 失效
公开(公告)号：JPH11324583A
公开(公告)日：1999-11-26
申请号：JP12907898
申请日：1998-05-12
申请人： KOIZUMI ATSUSHI , OHBAYASHI CORP , NIPPON KOKAN LIGHT STEEL KK
发明人： KOIZUMI ATSUSHI , HASEGAWA ISAO , NAKAJIMA MASATOMO , HAYASHI NOBUO , HIRAO SHOJI
IPC分类号： E21D11/04 , E21D11/18
摘要： PROBLEM TO BE SOLVED: To expand a diameter without using a special means and performing a special operation. SOLUTION: A simple linear 30 is provided with a first liner piece 30a and a second liner piece 30b. The piece 30a has a trapezoidal shape in which a width of a side face is gradually reduced from a facing side toward a portal and is formed like a wedge. The piece 30b has a trapezoidal shape in which a width of a side face is gradually reduced from the portal side toward the facing side. When the pieces 30a, 30b are assembled in an annular shape, they are assembled in such a way that the first liner piece 30a protrudes on the facing side. Upon completion of assembly, a projecting end of the first liner piece 30a is pressed on the portal side using a shield jack.

2. 发明专利

JP2001193391A ASSEMBLY STRUCTURE FOR TUNNEL LINING MEMBER 失效
公开(公告)号：JP2001193391A
公开(公告)日：2001-07-17
申请号：JP2000001102
申请日：2000-01-06
申请人： OHBAYASHI CORP , NIPPON KOKAN LIGHT STEEL KK
发明人： NAKAJIMA MASATOMO , NAKAMA SHOJI
IPC分类号： E21D11/04
摘要： PROBLEM TO BE SOLVED: To provide an assembly structure for a tunnel lining member capable of performing installation and disassembly easily and quickly in the circumference direction of the tunnel lining member. SOLUTION: In formation of a ring-type lining body covering the inner circumferential face of a tunnel by assembling a plurality of arc-shaped tunnel lining members 21-24, circumferential joint parts between the respective lining members 21-24 are jointed by means of temporarily engaging means 26, 27, while an expansible joint is arranged in at least one joint part between the lining members 21-24 for expanding/shrinking the joint part. In this assembly structure for the tunnel lining member, the expansible joint is a turnbuckle 28 provided with a pair of inverse threads 30, 31 connecting the both ends to the respective connection parts and a length regulating nut part 32 screwed to the inverse threads 30, 31.

3. 发明专利

JP2000257394A CONCRETE SPRAY DEVICE 失效
公开(公告)号：JP2000257394A
公开(公告)日：2000-09-19
申请号：JP6202599
申请日：1999-03-09
申请人： OHBAYASHI CORP , KOYO PRECISION MFG
发明人： YAMAMOTO YUKINOBU , NAKAJIMA MASATOMO , HAYASHI KOZO , YAMAGUCHI SHIGEO
IPC分类号： E02D17/20 , B05B7/26 , E04G21/02 , E21D11/10 , F16K7/06 , F16K15/14
摘要： PROBLEM TO BE SOLVED: To make pumping efficiency good by providing a valve body comprising an elastic body and providing a slit penetrated in the thickness direction on the connection part of a concrete pumping passage and a concrete set accelerating agent pumping passage. SOLUTION: A concrete pump is operated to pump concrete to a main pumping pipe, and a set accelerating agent pump is operated to pump a concrete set accelerating agent Q to a set accelerating agent pumping pipe 20. The set accelerating agent Q is pumped in the inner pipe 11 of a set accelerating agent addition nozzle 10 set on the connection part of the main pumping pipe and the set accelerating agent pumping pipe 20. A valve body 14 is deformed in the direction of the set accelerating agent pumping by the set accelerating agent Q jetted from the inner pipe 11, a slit S is enlarged to open a valve, and the set accelerating agent Q is added to concrete in the main pumping pipe. Concrete is jetted from the spray nozzle of the edge of the main pumping pipe to be sprayed on an object face. Furthermore, when the set accelerating agent Q is not pumped, the slit S is restored to be closed so as to close the valve. Thereby pumping efficiency can be made good.

4. 发明专利

JPH11166396A CONCRETE SPRAYING METHOD IN ROTARY SPRAYING MACHINE 失效
公开(公告)号：JPH11166396A
公开(公告)日：1999-06-22
申请号：JP33451897
申请日：1997-12-04
申请人： OHBAYASHI CORP
发明人： YAMAMOTO YUKINOBU , HASEGAWA ISAO , NAKAJIMA MASATOMO
IPC分类号： E21D11/10 , E04G21/02
摘要： PROBLEM TO BE SOLVED: To provide a concrete spraying method using a rotary spraying machine by which the addition percentage of a set accelerating agent in concrete can be easily kept regardless of pulsation of discharge amount of a concrete pump so as to easily prevent deterioration of quality of spray concrete. SOLUTION: Concrete sent from a concrete pump 10 through a cylindrical casing 18 is projected to the outside of an impeller device 19 by the impeller device 19 provided on the tip of the cylindrical casing 18. In that case, pulsation of discharge amount discharged from the concrete pump 10 is detected, and according to the pulsation, the supply amount of a set accelerating agent added to be mixed in concrete is adjusted and the concrete is sprayed.

5. 发明专利

JP2001288995A DIAMETER-EXPANSION-TYPE SIMPLE LINER 失效
公开(公告)号：JP2001288995A
公开(公告)日：2001-10-19
申请号：JP2000105826
申请日：2000-04-07
申请人： OHBAYASHI CORP
发明人： FURUKAWA SEIJI , NAKAJIMA MASATOMO , NAKAMA SHOJI
IPC分类号： E21D11/14
摘要： PROBLEM TO BE SOLVED: To provide a simple liner that can be installed easily by eliminating the need for uneven shaping. SOLUTION: A liner 30 is provided with a crown piece 30a that is installed at the crown part of an excavation surface, a pair of side pieces 30b that is arranged at both the side surface sides of the excavation surface, and a diameter-expansion maintenance member. The area between the piece 30a and each piece 30b is in a hinge connection including a pin 30d. When the liner 30 is to be installed, it is carried to the rear end side of a TBM while it is folded. Then, the piece 30a is pressed to the crown part of the excavation surface, and at the same time the piece 30b is pressed to both the sides of the excavation surface. When the piece 30a and the piece 30b have been pressed to the excavation surface, the diameter-expansion maintenance member is installed so that the lower end sides of the side piece 30b can be connected, and both the ends are fixed to the excavation surface.

6. 发明专利

JPH11117681A TUNNEL BORING MACHINE AND BORING METHOD 失效
公开(公告)号：JPH11117681A
公开(公告)日：1999-04-27
申请号：JP28395697
申请日：1997-10-16
申请人： OHBAYASHI CORP
发明人： HIGUCHI MIKIYA , NAKAJIMA MASATOMO
IPC分类号： E21D9/10 , E21D9/11
摘要： PROBLEM TO BE SOLVED: To easily construct timbering made of shotcrete and the like, while preventing the collapse of the natural ground near a top end behind the rear hull part of a tunnel boring machine. SOLUTION: This tunnel boring machine 10 includes a front hull part 12 having at its end a cutter head 11 for drilling a working face, a rear hull part 13 slidably joined with the front hull part 12, and a thrust jack provided between the front hull part 12 and the rear hull part 13 to slide them for expansion and contraction, and is designed to perform tunnel boring work while using grippers 18, 19 pressing the natural ground around its outer periphery to obtain reactions during expansion and contraction. In this case, an operating tail part 50 which projects backward by sliding back and forth along the outer periphery of the rear hull part 13 is provided on at least the upwardly arched part of the rear end of the tunnel boring machine 10, and timbering made of shotcrete or the like is constructed as the operating tail part 50 is moved back and forth.

7. 发明专利

JPH11116289A HIGH STRENGTH SPRAYED CONCRETE OR MORTAL 失效
公开(公告)号：JPH11116289A
公开(公告)日：1999-04-27
申请号：JP28481897
申请日：1997-10-17
申请人： OHBAYASHI CORP , ISHIKAWAJIMA KENZAI KOGYO KK , RIBUKON ENGINEERING KK
发明人： SONODA NAOSHI , NAKAJIMA MASATOMO , YAMAMOTO ATSUSHI , OSUGA TETSUO , ARAI HIROYUKI , HOSHI HIDENORI , TAMURA TADAAKI
IPC分类号： E21D11/10 , C04B7/19 , C04B28/02 , C04B28/08
摘要： PROBLEM TO BE SOLVED: To improve long-term age strength with a low cost by specifying the replaced ratio of a blast furnace slag fine powder to the total mass of a binder and water/binder ratio. SOLUTION: The sum of the cement mass C per 1 m sprayed concrete or mortal containing the blast furnace slag fine powder and the blast furnace slag fine powder mass Sg is expressed as the binder total mass P(=C+Sg). The replaced ratio Sg/P of the blast furnace slag fine powder Sg to the binder total mass P is controlled to 10-40% and the water-binder ratio W/P is controlled to 30-50%. The surface area of the blast furnace fine powder is not particularly limited, but one having 5000-7000 cm /g surface area is most excellent in due consideration of the market price and strength exhibiting property due to latent hydraulicity. In the production of the concrete or the mortal, the strength exhibiting property and the workability are improved by using a process for kneading by dividing the water for kneading into a 1st and a 2nd kneading water for 2 stages. The workability and the safety to operators are improved by using an alkali free liquid accelerating agent.

8. 发明专利

JP2001140595A REPAIRING METHOD FOR COLD JOINT 失效
公开(公告)号：JP2001140595A
公开(公告)日：2001-05-22
申请号：JP32393999
申请日：1999-11-15
申请人： OHBAYASHI CORP
发明人： OZAWA IKUO , NAKAJIMA MASATOMO
IPC分类号： B26F3/00 , E04G23/02 , E21D11/10
摘要： PROBLEM TO BE SOLVED: To provide a fundamental repairing method for a cold joint. SOLUTION: A cut groove 24 is first formed along a cold joint section 12 by a water jet in this repairing method. After the prescribed cut groove 24 is formed, a hardening repairing material 30 is filled in the cut groove 24, and the filled repairing material 30 is hardened as time elapses. The repairing material 30 has little shrinkage, a good filling property, and the same shearing strength as that of concrete, and it can be selected from nonshrinkage mortar, fiber-reinforced mortar, and pea gravel high-fluidity concrete. When the hardening repairing material 30 is filled and hardened in the cut groove 24, healthy portions on both sides of the cold joint section 12 removed for forming the cut groove 24 are integrated together by the hardened repairing material 30.

9. 发明专利

JP2000291368A EXCAVATED SLIME PROCESSING DEVICE 失效
公开(公告)号：JP2000291368A
公开(公告)日：2000-10-17
申请号：JP10442999
申请日：1999-04-12
申请人： OHBAYASHI CORP , KAMEYAMA BIT KK
发明人： TOSAKA TOMOHEI , NAKAJIMA MASATOMO , MATSUMOTO TOYOMI
IPC分类号： E21B21/06
摘要： PROBLEM TO BE SOLVED: To process slime without causing a deterioration of working environment. SOLUTION: Excavated slime B is introduced into a decompression container 64 inside a slime processing device 62 through a connection pipe 74. In the process of this introduction, defoaming agent H is injected mixedly from an injection nozzle 94 installed immediately before the decompression container 64 into the excavated slime B. The defoaming agent H is injected mixedly to the excavated slime B, air bubbles contained in the excavated slime B are eliminated by the chemical action of the defoaming agent H. The air bubbles in contact with the defoaming agent H are eliminated and formed into water (liquid), and the excavated slime B containing residual air bubbles, sludge, and defoaming agent H enters into a first defoaming chamber 78 inside the decompression container 64. Because the inside of the decompression container 64 is decompressed to negative pressure, a pressure difference between the inside and outside of air bubble film becomes large and air bubble film is physically ruptured, and then the air bubbles contained in the decompression container 64 is eliminated earlier.

10. 发明专利

JP2000291359A METHOD AND DEVICE FOR BORING LARGE CALIBRE HOLE 失效
公开(公告)号：JP2000291359A
公开(公告)日：2000-10-17
申请号：JP10443099
申请日：1999-04-12
申请人： OHBAYASHI CORP , KAMEYAMA BIT KK
发明人： TOSAKA TOMOHEI , NAKAJIMA MASATOMO , MATSUMOTO TOYOMI
IPC分类号： E21B7/04 , E21B6/00
摘要： PROBLEM TO BE SOLVED: To exhaust dug slime smoothly in a large calibre hole boring. SOLUTION: When a natural ground is reinforced by burying a steel outer tube 24, a thrust, rotation, and hammering are transmitted to an inner tube rod 22 and a boring bit 20 through a shank rod 38 in order to dig the natural ground and form a bored hole. In this case, cooling medium A is supplied to a medium supply passage 28 through a supply port 34, and the medium A is injected from the boring bit 20 to the natural ground. The dug powder is mixed with the cooling medium A to form digging slime B, and the digging slime B is exhausted to the outside from an exhaust port 36 through an exhaust passage 30. In the exhaust process of the digging slime B, the rotating force is transmitted to a soil removing sleeve 58 and the soil removing sleeve 58 is drivingly rotated in the same direction as the inner tube rod 22. When the sleeve 58 is drivingly rotated the digging slime B is moved to a swivel 32 side in the exhaust passage 30 according to the rotation of a screw vane 56.

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