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1. 发明专利

JP2000219871A ASPHALT-BASED SOFT GROUTING MATERIAL AND WATER CUT-OFF WORK 失效
公开(公告)号：JP2000219871A
公开(公告)日：2000-08-08
申请号：JP2479899
申请日：1999-02-02
申请人： NATL RES INST OF AGRICULTURAL , TAISEI ROTEC CORP
发明人： TANI SHIGERU , NAKAJIMA KENJIRO , NOMURA KENICHIRO , ITO KUNIHIKO , TAKAHASHI MITSUHIKO , SATO SHOICHI
IPC分类号： E02B3/04 , C09K3/10 , C09K17/44 , C09K17/50 , C09K103/00 , C09K107/00
摘要： PROBLEM TO BE SOLVED: To obtain the subject grouting material having such high penetrability as to be injectable in a veinlike way to fine leakage paths and also having such high flexibility as to be compliant with e.g. change in ground formation after hardened, and to provide a water cut-off work using the above grouting material. SOLUTION: This grouting material comprises 30.0-90.0 vol.% of an asphalt emulsion, 3.0-10.5 vol.% of cement, 0.0-17.0 vol.% of filler and 0.0-60.0 vol.% of water. The other objective water cut-off work comprises injecting the above grouting material into the ground or gaps between the ground and a construct.

2. 发明专利

JP2000338258A FILL DAM CONTROL SYSTEM BY SPECIFIC RESISTANCE TOMOGRAPHY METHOD AND ITS CONTROL METHOD 失效
公开(公告)号：JP2000338258A
公开(公告)日：2000-12-08
申请号：JP15173999
申请日：1999-05-31
申请人： NATL RES INST OF AGRICULTURAL
发明人： NAKAZATO HIROMI , NAGATSUKA ISAMU , NAKAJIMA KENJIRO
IPC分类号： G01V3/20
摘要： PROBLEM TO BE SOLVED: To control a dam inexpensively over a long term with a simple configuration. SOLUTION: A temperature sensor 6 for detecting the temperature of a fill dam 3 and electrodes Pa1-Pan and Pb1-Pbn for detecting specific resistance are buried into the fill dam 3 in advance when the fill dam 3 (4, 3A) is to be constructed by obtaining the relationship among the specific resistance and each physical property of temperature, gap ratio, and saturation by an experiment in advance and acquiring the basic elements for analysis and abnormality judgment. After the fill dam 3 is completed, temperature data that is collected from the temperature sensor 6 being buried into the fill dam 3 and potential data that is measured by an electrical prospecting device 2 are processed by a computer 5 for creating a temperature distribution and a specific resistance distribution with time, then the created physical property distribution and specific resistance distribution are compared based on a relation expression that is obtained by an experiment in advance, it is judged whether the change in the specific resistance distribution is abnormal or normal based on the comparison, and an abnormal site is detected according to the region of the specific resistance region when it is judged to be abnormal.

3. 发明专利

JP2001090177A PRECAST CONCRETE PANEL STRUCTURE 失效
公开(公告)号：JP2001090177A
公开(公告)日：2001-04-03
申请号：JP26896999
申请日：1999-09-22
申请人： NATL RES INST OF AGRICULTURAL , GEOSTR CORP , TSURUMI CONCRETE KK
发明人： TANI SHIGERU , TOYODA HIROMICHI , NAKAJIMA KENJIRO , WATANABE KEIICHI , UNNO YUSUKE , TANIZAWA JUNPEI , KONNO OSAMU , KICHISE MASANORI , SUGIMOTO IKUO
IPC分类号： E03F3/04 , E04B1/04 , E04B1/61 , E04B2/56
摘要： PROBLEM TO BE SOLVED: To provide a precast concrete panel structure capable of efficiently transmitting shearing force to be generated in a joint part in the substantially L-shaped connection of each precast concrete panel to each precast concrete panel. SOLUTION: In this precast concrete panel structure 1, when the connecting surface 2a-side end part of on structure constituting precast concrete panel 2 to connect is engaged with an engagement cutout part 3 formed on the connecting surface 2a of the other structure constituting precast concrete panel 2 to connect to connect each precast concrete panel 2 in substantially L shape, the shearing force generated in the joint is efficiently transmitted to each precast concrete panel 2.

4. 发明专利

JP2000073339A INSPECTION GALLERY IN FILL-TYPE DAM AND CONSTRUCTION METHOD OF INSPECTION GALLERY IN FILL-TYPE DAM 失效
公开(公告)号：JP2000073339A
公开(公告)日：2000-03-07
申请号：JP20389098
申请日：1998-07-17
申请人： NATL RES INST OF AGRICULTURAL , MAEDA CONSTRUCTION , KUMAGAI GUMI CO LTD , ZENITAKA CORP , TOBISHIMA CONSTRUCT CO LTD , JAPAN DEV & CONSTRUCTION , FUJIMI KOKEN KK , MAEDA SEISAKUSHO
发明人： NAKAJIMA KENJIRO , YASUNAKA MASAMI , ASANO ISAMU , YOKOZAWA KAZUO , AKASAKA YUJI , HARA NATSUO , MORIMOTO HIDEKI , TAKADA TOSHIYUKI , IWASAKI NORIO , HIROSE SHIGEMICHI , SAWARA SEIYA , HONGO YUTAKA , YAZAWA TSUGIO
IPC分类号： E02B7/00 , E02B7/06 , E02D27/40
摘要： PROBLEM TO BE SOLVED: To provide an inspection gallery in a fill-type dam and a construction method of the inspection gallery in the fill-type dam, shortening a construction period, improving workability through the decrease of work processes and reducing the total cost. SOLUTION: Invert concrete 4 is placed at a bottom part of a ditch part 20 provided by excavating a foundation rock bed of a fill-type dam, and an arch 6 of an opening part of an inspection gallery 1 is constructed on the invert concrete 4. Steel fiber reinforced concrete is then placed inside the ditch part 20 and on the outer peripheral side of the arch 6 of the opening part of the inspection gallery 1 to form concrete 5 for reinforcing the outer peripheral part of the inspection gallery 1.

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