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1. 发明专利

JPH02128009A ROCK FILLER FILL-UP GROUND DENSITY MEASURING METHOD BY IN-SITU GROUND FREEZING METHOD 失效
公开(公告)号：JPH02128009A
公开(公告)日：1990-05-16
申请号：JP28221288
申请日：1988-11-08
申请人： TAKENAKA KOMUTEN CO , TAKENAKA DOBOKU , TOKYO SOIL RES KK , MIZUSHIGEN KAIHATSU KODAN
发明人： SUZUKI YOSHIO , HATANAKA MUNENORI , OHARA ATSURO , MAKIHARA YORIO , SAKAGUCHI SHUJI , OKUBO RYOJI , OOMOTO IEMASA , KASHIWAGI JUN , AOKI MIKI
IPC分类号： E02B7/06 , E02D1/00 , E02D1/04 , G01N9/00
摘要： PURPOSE:To increase the degree of accuracy of density measurement by freezing the ground through refrigerant, digging the frozen part out of the ground to obtain the volume by a liquid container and, at the same time, defrosting and drying the frozen part to be dug out to obtain the weight, and calculating the density from both volume and weight thereof. CONSTITUTION:A freezing pipe 6 is placed into the fill-up ground 1, and refrigerant such as liquid nitrogen and the like is supplied to freeze the ground 1. After that, a frozen part is dug out of the ground, and it is contained into a liquid container to obtain the volume thereof. Furthermore, the frozen part 7 to be dug out is defrosted and dried to obtain the weight thereof. The density is calculated from the obtained volume and weight. According to the constitution, the density of the ground can be measured with high degree of accuracy.

2. 发明专利

JPS63175742A CONSTANT HEAD TYPE INSTRUMENT FOR MEASURING WATER PERMEABILITY 失效
公开(公告)号：JPS63175742A
公开(公告)日：1988-07-20
申请号：JP618487
申请日：1987-01-16
申请人： MIZUSHIGEN KAIHATSU KODAN
发明人： OKUBO RYOJI , MIYAGAWA TAKAHITO , YONEZAKI FUMIO
IPC分类号： G01N15/08 , G01N13/04
摘要： PURPOSE:To improve the efficiency of a measurement operation of water permeability and the accuracy of said measurement by measuring a water supply rate and measurement time while supplying water to a measuring hole until the detected water level in the measuring hole attains a nearly specified level. CONSTITUTION:After a prescribed volume of water is supplied into the measuring hole 1, a float 2 is floated in the water to maintain an oscillating arm 3 in an approximately horizontal state. The water is then penetrated into a granular structure F. A pump 9 operates at this time and when a roller 9a passes a photoelectric sensor 12, an H level signal is outputted from the sensor 12 to a controller 13 via an amplifier 8. The number of passes of the roller 9a is recorded together with the lapse of the time on the chart paper of a pen recorder 14 fed at a constant speed by the above-mentioned signal. Since the number of the passes thereof is proportional to the water supply rate of the pump, the water supply rate to the hole 1 is detected from said number of the passes in correspondence to the measurement time. The volume of the water penetrating in the structure F is correspondingly detected and the permeation coefft. is calculated.

3. 发明专利

JPS63175741A FALLING HEAD PERMEAMETER 失效
公开(公告)号：JPS63175741A
公开(公告)日：1988-07-20
申请号：JP618387
申请日：1987-01-16
申请人： MIZUSHIGEN KAIHATSU KODAN
发明人： OKUBO RYOJI , MIYAGAWA TAKAHITO , YONEZAKI FUMIO
IPC分类号： G01N15/08
摘要： PURPOSE:To greatly improve the efficiency of a measurement operation by detecting the weight change of a weight member by a buoyancy change and determining the level change quantity of a water level, then detecting a water permeation coefft. automatically. CONSTITUTION:A timer counts measurement time and a prescribed routine is executed when a switch for starting the measurement is turned on. Namely, the weight W1 of the weight member 2 detected by a balance 4 is read simultaneously with the start of the measurement time. Whether the counted measurement time elapses by the prescribed time or not is decided and the operation is progressed to the ensuing stage in the case of YES. The weight W2 of the weight member 2 at every prescribed time from the start of the measurement is read. The level change quantity of the water level is then computed from the detected weights W1, W2. The water level in a measuring hole 1 penetrates by the prescribed quantity in a granular structure upon lapse of the prescribed time and, therefore, the water level falls and the member 2 is correspondingly exposed from the water surface. The volume of the member 2 existing in the water is correspondingly decreased. The level change quantity of the water level is determined from such weight change, by which the water permeation coefft. is automatically obtd.

4. 发明专利

JPH0643994B2 失效
公开(公告)号：JPH0643994B2
公开(公告)日：1994-06-08
申请号：JP13440886
申请日：1986-06-09
申请人： MIZUSHIGEN KAIHATSU KODAN , SOIRU & LOCK ENG KK
发明人： OKUBO RYOJI , MIYAGAWA TAKAHITO , YONEZAKI FUMIO , NOBEYAMA MASAYUKI
IPC分类号： G01N23/06 , G01N9/24 , G01N23/09 , G01N33/24

5. 发明专利

JPS63297607A CORE ROLLING PRESSURE LOCUS RECORDER 失效
公开(公告)号：JPS63297607A
公开(公告)日：1988-12-05
申请号：JP13179687
申请日：1987-05-29
申请人： MIZUSHIGEN KAIHATSU KODAN , TAKUWA CO LTD
发明人： OKUBO RYOJI , KONUMA BUNJI , KANO TADAYOSHI , OKUDA MASAHITO
IPC分类号： E01C19/00 , E01C19/26

6. 发明专利

JPS62289761A METHOD FOR DISCRIMINATING COMPACTION OF GRANULAR MATERIAL AND INSTRUMENT FOR MEASURING MOISTURE RATIO/ DRY DENSITY 失效
公开(公告)号：JPS62289761A
公开(公告)日：1987-12-16
申请号：JP13440886
申请日：1986-06-09
申请人： MIZUSHIGEN KAIHATSU KODAN , SOIRU & LOCK ENG KK
发明人： OKUBO RYOJI , MIYAGAWA TAKAHITO , YONEZAKI FUMIO , NOBEYAMA MASAYUKI
IPC分类号： G01N23/06 , G01N9/24 , G01N23/09 , G01N33/24
摘要： PURPOSE:To easily measure the moisture content in a granular material by putting the compacted granular material into a container, radiating a low level neutron ray thereto and measuring the intensity of the fast neutron past the granular material. CONSTITUTION:The compacted granular material 2 (soil) is put into the container 1 and the low level neutron ray 4 is radiated from the neutron ray source and the fast neutron past the granular material 2 enters a detector 5. Since the intensity of the fast neutron corresponds to the moisture contest contained in the granular material 2; therefore, the moisture in the container 1 and further the moisture ratio indicating the moisture per unit volume are calculated 6. On the other hand, the wet density of the material in the container 1 measured by, for example, a weighing machine 7 is inputted and the dry density is calculated 6 from the moisture ratio and the wet density. The data is plotted on a two-dimensional display screen and a compaction curve is obtd. from the plot, by which the optimum moisture ratio and max. dry density are obtd.

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