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1. 发明专利

JPH10114956A METHOD OF BOILING COUNTERMEASURE BY GROUNDWATER 失效
公开(公告)号：JPH10114956A
公开(公告)日：1998-05-06
申请号：JP26893296
申请日：1996-10-09
申请人： MAEDA CONSTRUCTION , FUJIMI KOKEN KK
发明人： KOBAYASHI TATEO , SAKATA FUMIAKI , TANAKA MIKIHIKO , GOSOU AKIRA
IPC分类号： E02D17/02 , E02D31/02 , E21D7/00
摘要： PROBLEM TO BE SOLVED: To provie a method of construction, by which boiling can be stopped quickly and easily even when boiling by groundwater is generated in the excavating plate of a shaft, etc. SOLUTION: In the method of boiling-countermeasure construction by groundwater, crushed stones 12 are put to an excavating plate 5, in which boiling 6 by groundwater 4 is generated, in the excavation process of a shaft and a cutting, etc., 10 for construction. Accordingly, a crushed-stone heap 13 in specified height is heaped up. The crushed-stone heap 13 inhibits the election energy of groundwater 4 by its own weight. Only groundwater 4 is drained through clearances 15 formed among each mutual crushed stone 12 constituting the crushed-stone heap 13.

2. 发明专利

JP2000017636A ANTICORROSIVE EMBEDDED FORM 失效
公开(公告)号：JP2000017636A
公开(公告)日：2000-01-18
申请号：JP18945498
申请日：1998-07-03
申请人： MAEDA CONSTRUCTION , FUJIMI KOKEN KK , MITSUBISHI RAYON CO
发明人： INOUE TAKAYA , KONO KAZUNORI , GOSOU AKIRA , ISHIDA HIDEO
IPC分类号： E02B7/00
摘要： PROBLEM TO BE SOLVED: To provide an anticorrosive embedded form capable of sufficiently increasing the adhesive strength with concrete and having excellent acid resistance and corrosion resistance. SOLUTION: Main body of a concrete form is formed by methacrylic resin- based resin concrete, urethane resin-based resin concrete, epoxy resin-based resin concrete, vinyl ester resin-based resin concrete, epoxy resin based resin concrete or vinyl ester resin-based resin concrete. And anchoring means for anchoring a concrete 2 to the inner surface of the main body of the form is provided and a transparent member 22 penetrating through the inner concrete 2 is provided in the main body of the form.

3. 发明专利

JPH10114957A METHOD OF SAND BOILING-PREVENTIVE CONSTRUCTION IN EXCAVATION WORK OF SHAFT, ETC. 失效
公开(公告)号：JPH10114957A
公开(公告)日：1998-05-06
申请号：JP26893396
申请日：1996-10-09
申请人： MAEDA CONSTRUCTION , FUJIMI KOKEN KK
发明人： KOBAYASHI TATEO , GOSOU AKIRA
IPC分类号： E02D17/02 , E02D31/02 , E21D7/00
摘要： PROBLEM TO BE SOLVED: To prevent the generation of sand boiling in the excavation works of a shaft, etc., by executing a gravel pile at a site, where the generation of sand boiling is feared, prior to the excavation process of the shaft, etc., and discharging groundwater from the gravel pile as excavation progresses. SOLUTION: A landslide protection wall 1 is executed to a sandy ground G, and a columnar pit 15 is drilled at a site, where sand boiling is feared, while being crossed over an excavating batholith 5. Single-sized medium-grain crushed stones 9 are charged and packed into the columnar pit 15, and a gravel pile 20 is formed. The landslide protection wall 1 is fixed in the lateral direction by walings while struts are introduced among the walings, and the shaft is excavated continuously while stabilizing the landslide protection wall 1. Consequently, a groundwater flow 7 inducing sand boiling is ejected to the excavating batholith 5 through the gravel pile 20. The runoff of the grains of soil and sand in the ground G is prevented by the gravel pile 20, and only groundwater is discharged. Accordingly, the generation of sand boiling in the excavation works of the shaft, etc., can be obviated.

4. 发明专利

JPH09287397A REPAIR METHOD OF TUNNEL-LINING WALL SURFACE 失效
公开(公告)号：JPH09287397A
公开(公告)日：1997-11-04
申请号：JP9873696
申请日：1996-04-19
申请人： MAEDA CONSTRUCTION , FUJIMI KOKEN KK
发明人： YOKOZAWA KAZUO , KAYAMA YASUHARU , AKASAKA YUJI , GOSOU AKIRA
IPC分类号： E21D11/10
摘要： PROBLEM TO BE SOLVED: To provide the repair method of deteriorated lining wall surfaces of a turnnel efficiently without largely shrinking the opening of the tunnel. SOLUTION: A new invert section 12 is formed to a floor section excepting both side sections of the floor of a cleaned tunnel wall surface 11, and the tunnel wall surface 11 is covered with side-wall form members 13 having an L-shaped cross sectional shape and consisting of a mortar member, in which a fiber-reinforced material is mixed, and top-section form members 14 having an arcuate cross sectional shape as a whole and composed of the mortar member, in which the fiber-reinforced material is mixed. Mortar 15 is injected into voids among the top-section form members 14 and the side-wall form members 13 and the tunnel wall surface 11 covered with both form members 13 and 14, and the tunnel wall surface 11 and the top-section form members 14 and the side-wall form members 13 covering the tunnel wall surface 11 are unified.

5. 发明专利

JPH07301091A PROPULSION REACTION FORCE RECEIVING METHOD FOR SHIELD MACHINE 失效
公开(公告)号：JPH07301091A
公开(公告)日：1995-11-14
申请号：JP9356294
申请日：1994-05-02
申请人： MAEDA CONSTRUCTION
发明人： KOBAYASHI TATEO , GOSOU AKIRA , YAMASHITA KENZO
IPC分类号： E21D9/06
摘要： PURPOSE:To prevent the occurrence of cracking to the end part of a segment when segments are installed as a reaction force to a shield thrust is exerted as a compression stress from a jack shoe to line a shield tunnel, in excavation of a tunnel by a shield machine. CONSTITUTION:In excavation of a tunnel by a shield machine, segments 1 are assembled in the shape of a ring on the tail side of a shield machine, a reaction force generated when the shield machine is forced to effect propulsion in a state that a jack shoe 3 of a jack device for thrust located between the end part of the segments and the shield machine is forced into contact with the ends of the assembled existing segments 1 is received. In this method, a stiffening plate 10 having width narrow than the thickness of the segment is arranged almost at the central part in the direction of thickness of the segment between the jack shoe 3 and the end part of the segment 1. A compression reaction by the jack shoe 3 is exerted almost on the central part in the direction of thickness of the end part of the segment 1 through the stiffening plate 10.

6. 发明专利

JPH0649808A METHOD OF ERECTING MAIN CONCRETE TOWER 失效
公开(公告)号：JPH0649808A
公开(公告)日：1994-02-22
申请号：JP20549492
申请日：1992-07-31
申请人： MAEDA CONSTRUCTION
发明人： GOSOU AKIRA , IWASAKI TOSHIAKI , YAJIMA MINORU , SUZUKI HIROSHI , MATSUNO ISAO , IWABUCHI AKIRA
IPC分类号： E01D11/00 , E01D19/14 , E04H12/12
摘要： PURPOSE:To enable a main concrete tower of excellent external appearance to be erected with high working efficiency. CONSTITUTION:An inner frame body 30 is formed by means of piling a pre- casted concrete block 31 in the perpendicular direction in a manner to enclose a tower portion 20 provided for the purpose to support a working rack 22. Outer frame bodies 41 to 44 are formed by means of piling a pre-cast concrete block 45 in the perpendicular direction in a manner to enclose the inner frame body 30 through a specific distance from the inner frame body 30. Concrete is placed in a space formed by the inner frame body 30 and the outer frame bodies 41 to 44.

7. 发明专利

JPH04203019A NON-SOIL DISCHARGING AND INNER DRILL PILING WORK 失效
公开(公告)号：JPH04203019A
公开(公告)日：1992-07-23
申请号：JP33373390
申请日：1990-11-30
申请人： MAEDA CONSTRUCTION
发明人： GOSOU AKIRA
IPC分类号： E02D7/00
摘要： PURPOSE:To reduce the cost of construction by a method in which an auger having an expanding bit on its tip is inserted into a hollow pile for excavating an expanded pit, and soil is packed to the periphery of the pile while separating water from the soil by stirring. CONSTITUTION:Excavating blades 3b are pivotally attached to a conical base 3a attached to the tip of an auger 2 in such a manner that the blades 3b can come in or out of the base 3a by a pile contracting mechanism in an expanding bit 3. The bit 3 is attached to a hollow pile 1, and the pile 1 is penetrated while excavating expansively the ground of a comparatively high water content by the bit 3. The excavated soil is discharged outwards along the base 3a to pack it into the peripheral aperture H continuously in a consolidated form. The construction can thus be made economically and efficiently without the need to discharge excavated soil to the outside.

8. 发明专利

JPH04203096A NON-EARTH MOVING SHIELD METHOD 失效
公开(公告)号：JPH04203096A
公开(公告)日：1992-07-23
申请号：JP33373490
申请日：1990-11-30
申请人： MAEDA CONSTRUCTION
发明人： GOSOU AKIRA
IPC分类号： E21D9/06
摘要： PURPOSE:To enable the shield execution without moving earth by excavating widely the ground having high water content with a shield cutter provided with specific times of the diameter of an outside diameter of a shield machine, and separating earth into solid and liquid to consolidate and fill them in the peripheral space around the shield machine. CONSTITUTION:An enlarged shield cutter 2 capable of sending excavated earth backward of the peripheral surface of a shield machine 1 and provided with 2-3 times of the diameter of an outside diameter of the shield machine 1 is provided to the front end of the shield machine 1, and the shield machine 1 is driven forward while subsequently excavating the ground widely. After that, the earth is stirred with the shield cutter 2, and after the earth is separated into water and solid, they are continuously sent to the peripheral space made around the shield machine 1 caused by excavating the ground widely to fill them in a consolidated state. Measuring instruments 3 are installed on the ground right above a shield driving section and deal with the rising and falling of the peripheral ground with the consolidation. According to the constitution, a shield execution can be carried out without moving earth.

9. 发明专利

JPS55126615A METHOD FOR TRANSPORTING EXCAVATED SOIL IN CAISON 失效
公开(公告)号：JPS55126615A
公开(公告)日：1980-09-30
申请号：JP3167379
申请日：1979-03-20
申请人： MAEDA CONSTRUCTION
发明人： GOSOU AKIRA , TAKANO KATSUMI , UNO TSUNEO , TOHATA KENJI
IPC分类号： E02F7/00 , E02D23/06 , E02D23/08
摘要： PURPOSE:To enable a continuous discharging operation by a slurry pump cooperatively driven with a slurry tank without any troubles in excavating operation. CONSTITUTION:Excavated sand and soil A is fed into and agitated in the slurry tank 3 arranged in such a manner as being enabled to be moved in the caison operation room 1 to make a slurry form. Slurry is transported continuously over the ground by the slurry discharge pump while a water feeding volume and a water discharge volume are adjusted.

10. 发明专利

JPS5513324A CONSTRUCTION METHOD EFFECTIVELY UTILIZING WORK SPACE IN TUNNEL 失效
公开(公告)号：JPS5513324A
公开(公告)日：1980-01-30
申请号：JP8485478
申请日：1978-07-11
申请人： MAEDA SEISAKUSHO , MAEDA CONSTRUCTION
发明人： OOISHI JIYUNZOU , GOSOU AKIRA
IPC分类号： E21F13/06 , E21F13/02

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