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1. 发明专利

JPH08304559A EQUIPMENT AND METHOD FOR INVESTIGATING FRONT OF TUNNEL 失效
公开(公告)号：JPH08304559A
公开(公告)日：1996-11-22
申请号：JP13873395
申请日：1995-05-12
申请人： SENTAN KENSETSU GIJUTSU CENTER , TOKYU KENSETSU KK , OMOTO CONSTR CO LTD , MAEDA CONSTRUCTION , PENTA OCEAN CONSTRUCTION
发明人： KATO KATSUHIKO , MITSUO ATSUSHI , MARUYAMA ISAO , SUZUKI SHOJI , SAKAI TERUO , TOKUNAGA YUTAKA
IPC分类号： E21D9/06 , G01H17/00 , G01V1/00 , G01V9/00
摘要： PURPOSE: To obtain an equipment and a method for investigating the front of a tunnel which conducts reliable and economical investigation of geological features of the front of facing without hindering tunnel excavation work. CONSTITUTION: The vibration at the time of boring of facing 21 is picked up by a vibration pickup 11, while a hole-cutting sound at the time of cutting is collected by a sound collecting microphone 12, and they are converted into vibration acceleration and a sound pressure respectively. The vibration acceleration and the sound pressure thus acquired are compared with the known data on the vibration acceleration and the sound pressure made to correspond to all geological features beforehand and the geological features in the front of the facing are thereby known.

2. 发明专利

JPH09242060A DRAIN MATERIAL FOR PREVENTING METHOD OF LIQUEFACTION OF GROUND CAUSED BY EARTHQUAKE 失效
公开(公告)号：JPH09242060A
公开(公告)日：1997-09-16
申请号：JP8587196
申请日：1996-03-13
申请人： MINI PUBLIC WORKS , SENTAN KENSETSU GIJUTSU CENTER , OHBAYASHI CORP , OMOTO CONSTR CO LTD , KAJIMA CORP , KUMAGAI GUMI CO LTD , KONOIKE CONST , PENTA OCEAN CONSTRUCTION , SATO KOGYO , SHIMIZU CONSTRUCTION CO LTD , DAIHO CONSTRUCTION CO LTD , TOA HARBOR WORKS CO LTD , TOKYU KENSETSU KK , TOYO CONSTRUCTION , TOBISHIMA CONSTRUCT CO LTD , NISHIMATSU CONSTR CO LTD , FUJITA CORP , MITSUI CONSTR , UBE INDUSTRIES , MITSUBISHI MATERIALS CORP , NIHON CEMENT , SUMITOMO OSAKA CEMENT CO LTD , CHICHIBU ONODA CEMENT CORP , NARASAKI SEISAKUSHO KK
发明人： OGAWA SHINKICHI , AKUMOTO KAZUMI , KAWACHI TAKESHI , UNO SADAO , TOKUNAGA YUTAKA , HONMA KIICHI
IPC分类号： E02D3/10
摘要： PROBLEM TO BE SOLVED: To provide a desirable drain material by the provision of a liquefaction preventing method by forming a viscous part through selection of shield water as the resultant material during construction, and forming dehydrated cake through dehydrating the same, and adjusting the grain size of the cake to an optimum level and baking it. SOLUTION: Muddy water taken in by a muddy tier type shield 1 is selected by a selecting machine 2, and the viscous part obtained by removing gravel and sand is put in a aggremeration and sedimentation layer 3. Then, the sedimentated viscous part is subjected to a filter press 4 to form a dehydrated cake. Next, the particle size thereof is made to 2-15mm by a stirring and grain forming machine 5a or extrusion grain forming machine 5b. Thereafter the formed grain material is subjected to a dryer 6 to control the water containing ratio to about 30%. The material is put in a baking machine 7 and the baked material 9 is cooled by a cooler 8. The crush strength of the material 9 is set to abount 60/cm or above.

3. 发明专利

JPH1144199A DEVICE FOR MEASURING CONFIGURATION OF SPRAYED SURFACE USING NATM 失效
公开(公告)号：JPH1144199A
公开(公告)日：1999-02-16
申请号：JP20296697
申请日：1997-07-29
申请人： PENTA OCEAN CONSTRUCTION
发明人： TANAKA KIYOSHI , SUGIMOTO HIDEKI , TAKEUCHI HIDEKI , TOKUNAGA YUTAKA
IPC分类号： E21D21/02 , E21D11/10
摘要： PROBLEM TO BE SOLVED: To measure the configuration of the excavated face of a tunnel or the surface of sprayed concrete during spraying work using a nozzle. SOLUTION: A boom 3 moving a nozzle 5 from which concrete is sprayed to an excavated face 100 is provided with two shielding plates 7, 7, one on the side to which the nozzle 5 moves and the other on the opposite side across the nozzle 5, in such a way that the shielding plates 7, 7 project forward in alignment with the nozzle 5, preventing the concrete from splashing around. A number of air ejecting holes from which compressed air is ejected are provided in the sides of the shielding plates 7, 7 facing the nozzle 5 to prevent adhesion of the concrete. Measuring apparatus 9, 9... measuring the distance to the excavated face 100 or the surface of sprayed concrete 105 are provided as they are secured to the side of each shielding plate 7 opposite to the nozzle 5, and the measuring apparatuses 9, 9... are moved by the boom 3 so that during spraying work using the nozzle 5, the configuration of the excavated face 100 or the surface of the sprayed concrete 105 is measured before and after concrete spraying. The nozzle 5 is controlled according to these measurements.

4. 发明专利

JPH0560663A METHOD FOR SAMPLING UNDERWATER DEPOSITED EARTH AND SAND 失效
公开(公告)号：JPH0560663A
公开(公告)日：1993-03-12
申请号：JP25038091
申请日：1991-09-03
申请人： PENTA OCEAN CONSTRUCTION
发明人： SEGAWA TOSHIYUKI , TOKUNAGA YUTAKA
IPC分类号： E21B49/00 , G01N1/08
摘要： PURPOSE:To shorten a sampling work time to a large extent and to enhance investigation efficiency to a large extent by eliminating the necessity for the extension or detachment of a rod. CONSTITUTION:The wire 4 delivered from a winch 3 is suspended to the scaffold 2 on a platform ship 1 to be supplied into water. An excavation pipe 5 is connected to the leading end of the wire 4 to be inserted in the accumulated earth and sand E on the bottom of the water. A grout pump 6, the hose reel 7 connected to the emitting end thereof, a vortex pump 8 and the hose reel 9 connected the suction end thereof are arranged on the platform ship 1 and the hoses 12,13 delivered from the respective reels 7.9 are connected to the excavation pipe 5. The excavation pipe 5 consists of an inner pipe 14 and the outer pipe 16 arranged around the leading end part of the inner pipe 14 and having an excavation cutter 15 provided to the leading end thereof and a jet water stream is emitted from the leading end of the outer pipe 16 and earth and sand are whirld up by said stream to be continuously transported to the platform ship 1 through the inner pipe 14.

5. 发明专利

JPH1150780A METHOD FOR PLACING REINFORCING PIPE 失效
公开(公告)号：JPH1150780A
公开(公告)日：1999-02-23
申请号：JP17223898
申请日：1998-06-03
申请人： TOHO KINZOKU KK , PENTA OCEAN CONSTRUCTION
发明人： KUNITAKE SEIJI , TSURUTA RYUJI , TAKEUCHI HIDEKI , TOKUNAGA YUTAKA
IPC分类号： E21D9/04
摘要： PROBLEM TO BE SOLVED: To install a pipe in a position closer to an excavated hollow, without increasing the width of an excavated cross section serving as a construction base, by placing a curved reinforcing pipe for use in long size prelining construction. SOLUTION: This method for placing a reinforcing pipe involves using a bit 1 capable of boring a hole with a diameter that allows insertion of a pipe, to insert the pipe at the same time that the hole is bored in the natural ground, and leaving the pipe behind in the natural ground after the hole of a predetermined length is bored and the pipe is inserted. In this case, the pipe 4 curved as a reinforcing pipe is used, and a rod 2 with a bit 1 attached to its end is curved within its limit of toughness inside the pipe 4 and is freely rotationally supported to bore the hole, so that boring of the curved hole and insertion of the curve pipe 4 are effected simultaneously. The hole may be bored as a plurality of pipes are joined together, in such a way that only the pipe at the foremost end is the curved pipe 4, with following straight pipes joined to the curved pipe located at the foremost end.

6. 发明专利

JPH0559894A THICKNESS CONTROL SYSTEM FOR TUNNEL LINING SPRAYED CONCRETE 失效
公开(公告)号：JPH0559894A
公开(公告)日：1993-03-09
申请号：JP24519291
申请日：1991-08-30
申请人： PENTA OCEAN CONSTRUCTION
发明人： TOKUNAGA YUTAKA , TSUNODA KAZUO , TAKEUCHI HIDEKI , TAKAHASHI MASASHI
IPC分类号： E21D11/10 , G01B11/06
摘要： PURPOSE:To prevent spray irregularities of lining concrete by measuring the distances to the inner face of the natural ground and the concrete spray face with a light wave range finder, and performing the spraying work while measuring its thickness. CONSTITUTION:Distances L to portions (1)-(N) along the cross section shape of a tunnel are measured toward the concrete spray position by a light wave range finder 4 respectively, and the results are temporarily stored together with the data of the portions. An arm 2 locates a spray nozzle 3 at the optimum position for the first measurement portion (1) based on the measured results for spraying. The distance at this position after the spraying is measured by the light wave range finder 4 in sequence, and the difference between the initial measurement value L and the measured data is calculated by an arithmetic controller. When the calculated result coincides with the initial set value of the spray distortion, a warning is outputted, the arm 2 and a base machine 1 are turned, the spray nozzle 3 is moved to the next portion (2), and the same actions are repeated.

7. 发明专利

JPH0870723A BLOCK FOR ARTIFICAL ALGAN FIELD AND PRODUCTION OF THE BLOCK 失效
公开(公告)号：JPH0870723A
公开(公告)日：1996-03-19
申请号：JP21354194
申请日：1994-09-07
申请人： PENTA OCEAN CONSTRUCTION
发明人： KAWASAKI YOSHITAKA , TOKUNAGA YUTAKA , HIYAMA HIROAKI
IPC分类号： A01K61/00 , A01G33/00
摘要： PURPOSE: To provide the subject block capable of proliferating sea algae even in an undersea free from sea algal spores, in creating an algal field at a seashore protective facility such as an offshore breakwater or submerged breakwater. CONSTITUTION: This block is obtained by the following process: sea algal spores are attached to the surface or inside of a bag and the bag is then packed with a mixture of a powdery block material and a solidifying agent therefor; more specifically, a water-permeable bag is immersed in the water (where sea algal spores float) in a water tank to attach the spores to the bag and this bag is packed with the mixture, and then laid undersea to effect solidifying the mixture.

8. 发明专利

JPH11100820A POLLUTED BOTTOM MUD DISPOSAL METHOD 失效
公开(公告)号：JPH11100820A
公开(公告)日：1999-04-13
申请号：JP27662897
申请日：1997-09-25
申请人： PENTA TECHNO SERVICE KK , MITSUBOSHI KAGAKU KK , PENTA OCEAN CONSTRUCTION
发明人： KIRIYAMA EIJI , WAKIMURA YOSHIRO , TOKUNAGA YUTAKA
IPC分类号： E02F7/00 , E02B3/00
摘要： PROBLEM TO BE SOLVED: To require no disposal site by excavating polluted bottom mud from the original ground, then adding a coagulant to the excavated polluted bottom mud, and precipitating flock via solid-liquid separation. SOLUTION: Polluted bottom mud 2 is excavated from the original ground 1, a coagulant is added to the excavated polluted bottom mud, and flock is precipitated via solid-liquid separation. The precipitated flock is dehydrated by a dehydrator, and clean water with a splash reference value or below is splashed. A solidifier is added to the dehydrated polluted bottom mud, granular solidified objects with an optical grain size are generated by a granulating machine, then the solidified objects are returned to the original excavation site. The polluted bottom mud is reduced in volume and is returned to the original site as the solidified objects not transformed into mud again, thus no disposal site is required.

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