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JP2021148757A |
To provide groundwater level observation equipment observing distribution and water level fluctuation of groundwater by a siphon principle using neither motive power nor a power source, installation method for the groundwater level obser...
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JP6936751B2 |
To provide an acquisition technology of ground information by oscillatory wave with a wide range of investigation in a horizontal direction.Receiver arrays 44R1 to R6 in which a plurality of receivers 32R, 32R, 32R, 32R, 32R, 32R, 32R, 3...
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JP6936451B2 |
To provide a scanning method of ground samples, a method of producing test samples of ground samples, a soil test method of ground samples and a scanning apparatus of ground samples, capable of preventing inadvertent disturbance and the ...
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JP2021130923A |
To stably collect core regardless a nature of a ground.A cylindrical tool main body 2 extending along a tool axis C1, a cylindrical head blade body 3 extending along a head axis C2 parallel to the tool axis C1 and rotatable around the he...
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JP6932614B2 |
To detect cracks promptly with a constant degree of precision.A crack detector 100 includes: a sine waveform extraction part 22 which analyzes a development image that is created by photographing an inner wall of a bore hole 2 formed in ...
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JP6928925B2 |
To provide an unsolidified specimen sampling device which can easily sample fluidity unsolidified deposits falling from an unmanned aircraft or a small-sized boat, and an unsolidified specimen sampling method.An unsolidified specimen sam...
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JP6927622B1 |
[Task] Percussion type boring machines and rotary type boring machines are used in the usual geological surveys, but boring machines are used to ensure the verticality of the drilling holes, which is a problem when excavating with these ...
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JP2021123959A |
To provide an adhesion strength evaluation method of fluidized soil capable of evaluating whether or not a desired adhesion force is exhibited to a place including an underground outer wall, to which a lateral pressure is added, by measu...
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JP2021123898A |
To remove the restriction on the length of a rod pushed into the seafloor and prevent the rod from buckling in a seafloor ground survey by CPT.A seafloor ground survey device surveys the seafloor ground by penetrating a cone probe 110 at...
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JP2021123888A |
To provide a verification method and a verification device for elastic wave propagation characteristics that can easily and repeatedly verify the relationship between the polarity reversal of reflected waves and rock properties with high...
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JP6926441B2 |
To provide a control method of a ground boring drill capable of surely detecting that the ground boring drill has come into contact with foreign objects while boring a hole in a ground without being limited to soil properties of a ground...
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JP6921701B2 |
To provide a ground investigation method capable of determining the necessity of vibration reduction measures of an earthquake by the minimum required ground investigation.A ground investigation method of investigating the state of a gro...
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JP6920690B2 |
To enable smooth separation of a bit from a boring rod.A bit attaching/detaching device comprises a latch case 4 having a bit 3 attached to its end and provided with a rotatable latch pawl 8, a packer tube 20 including a packer 22 and in...
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JP6919862B2 |
To provide a penetrating type ground characteristic measurement device allowing accurate measurement of ground characteristics.A penetrating type ground characteristic measurement device 10 comprises: a bogie 12 equipped with a radiation...
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JP2021116636A |
To provide a device and a method for measuring a compaction degree of an earth structure capable of measuring the compaction degree of the earth structure even in a sloped face or a narrow place.A device for measuring a compaction degree...
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JP2021117192A |
To provide an underwater ground pull-up test device and underwater ground pull-up test method capable of accurately performing a pull-up test for an underwater ground of a wide range from a soft ground to a hard ground.An underwater grou...
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JP6909025B2 |
To make reliability of measurement data and efficiency of testing work compatible.A measurement device A, which at least has a main body part 10 that can enter a long hole of a ground improvement body and testing means 20 that can perfor...
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JP6911356B2 |
To provide a support layer arrival determination method and a determination assist system capable of determining reaching of drilling to support layer.A drilling management system 20 has a control unit 31 that controls a display unit 26 ...
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JP6906776B2 |
To provide an implantation machine capable of penetrating a single pipe for efficiently and safely collecting a surface layer soil into the ground and capable of reducing a burden of the worker.An implantation machine 1 is capable of pen...
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JP6905874B2 |
To make it possible, in performing an evaluation test on an improvement effect on natural ground by injection material, to appropriately evaluate the improvement effect by making the injection material be sufficiently diffused into inter...
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JP6894244B2 |
To provide a method for stably estimating the strength of a foot protection part regardless of the amount of ground material.A method for estimating the strength of a foot protection part comprises a first step of collecting constituents...
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JP6891062B2 |
To provide a strength prospect method for a foundation part which does not require creation of a concordance table between establishment fields.The method comprises: a step of obtaining a first correlation between a mass ratio of cement ...
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JP6884341B2 |
To provide a soil determination method that can improve the accuracy of soil determination based on friction sounds.A soil determination method that includes (1) to (4) steps below is provided. (1) A step to insert a device with a microp...
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JP2021085199A |
To provide a ground strength estimation method capable of estimating reliability in a probability theory even when loading which reaches the ultimate bearing capacity cannot be carried out.A ground strength estimation method comprises: a...
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JP2021085204A |
To provide a ground sample sampling method and a ground sample sampling device capable of preventing flotation of a piston due to dynamic water pressure and capable of easily sampling a ground sample.A ground sample sampling method compr...
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JP2021080801A |
To provide a ground information acquisition method and a construction road planning method which acquire information with high accuracy as ground information when a construction plan in the case where a land development construction is p...
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JP6876296B2 |
To provide a method for measuring depth of a bearing ground capable of measuring depth of a bearing ground simply and in a short time in a ground improvement work.A method for measuring depth of a bearing ground 1 comprises: carrying out...
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JP2021076493A |
To provide a measurement system allowing a length of a communication cable connecting a measuring instrument and an amplifier to be reduced.A quick loading test system 1 measures a state when a pile P to be driven into the ground is impa...
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JP2021075887A |
To provide a ground specimen sampling method and a sampling device which can prevent collected ground specimens from being disturbed even if the sampler head moves upward due to reaction force.It is characterized by being composed of a p...
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JP6874378B2 |
To provide a support layer arrival determination method and a determination assist system capable of determining reaching of drilling to support layer.A drilling management system 20 has a control unit 31 that controls a display unit 26 ...
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JP6873823B2 |
To provide an effect confirmation method of a foundation structure for countermeasure against an expansive ground for realizing a countermeasure with high reliability, which can experimentally confirm an effect of a foundation structure ...
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JP6871502B2 |
To provide a pile foundation design system, design method, and design program, allowing for design of a pile foundation on the basis of more accurate ground information.The pile foundation design system comprises: a unit for preparing gr...
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JP6868385B2 |
To provide a ground diagnostic method for an underground structure capable of objectively evaluating the state of the ground around an underground structure.The present invention is a ground diagnostic method for diagnosing the propertie...
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JP6869538B2 |
To solve the problem in which: in a structure in which a collection port is opened and closed by a hydraulic cylinder, it is necessary to feed a hydraulic hose or the like at the same time as lowering a collector to a target depth positi...
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JP6868263B2 |
To provide a sampling method capable of performing sampling with respect to soil property in a wide range from soft soil property to hard soil property with little disturbance in soil property, which can be applied even to a large depth ...
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JP2021068540A |
To provide a structure capable of measuring ground resistance regardless of a ground environment.A buried structure with an electrode for measuring ground resistance at least a part of which is buried in the ground includes a wall 21 tha...
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JP6867251B2 |
To provide a soil sampling device and a soil sampling method that can collect a soil sample with less disturbance by, for example, utilizing a Swedish weight sounding test device.The soil sampling device includes an outer tube 1, an inne...
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JP2021060404A |
To provide a sample collecting device that can surely collect a desired amount of sample in a desired position under the ground.The present invention relates to a sample collecting device 1 for collecting a sample from an excavation hole...
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JP6858414B2 |
To provide a joint member as an auxiliary tool for filling water into the entire inside of a borehole including the inside of a transparent pipe, in a geological survey performed by inserting the transparent pipe into the borehole.A join...
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JP6857167B2 |
To provide a stratigraphic determination device that improves the accuracy of a stratigraphic determination result.A stratigraphy determination device 2 comprises a control unit 23 having a first determination unit that determines the st...
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JP2021055510A |
To provide an automatic hole expansion device for soil sampling.An automatic hole expansion device for soil sampling includes a base 10 and a body 60. The body is rotatably provided on a top face of the base, a first storage space 47 is ...
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JP6854011B2 |
To provide a foundation physical property estimation system which can practically accurately estimate foundation physical properties, even when existing data such as boring data is restricted in the periphery of an estimation point and i...
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JP2021050517A |
To provide a simple determination method of ground types easily determining ground types by detecting and analyzing, using a sensor, ground propagation sound generated upon excavation of or insertion to the ground with a tip of an excava...
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JP6842006B1 |
To disclose a sampling device for a soil excavation machine. A sampling box 20 is included, a ring-shaped sampling space 21 is provided in the sampling box, a storage groove 23 communicating with the outside is formed on the upper side o...
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JP6843427B2 |
To realize simplification of the operation for the ground survey by automatization of the extraction of the inflection point in the D-Vrb curve.The surface wave survey analyzer for the ground survey system to exerts the ground survey by ...
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JP6841704B2 |
To provide a method for improving ground which can continuously perform improvement of a necessary portion based on results of liquefaction determination by subsurface exploration.Provided is a method for improving ground for improving g...
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JP2021031863A |
To provide a ground surveying method capable of efficiently determining in terms of safety whether or not the ground is harmful for a building with a specific structure.A ground surveying method of the present invention is a method to su...
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JP6832497B2 |
To provide an estimation method of strength characteristics of soil cement capable of estimating strength characteristics from particle size of the soil, and an estimation device, a quality management method of a foot protection part whe...
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JP6832211B2 |
To provide a ground investigation device capable of largely reducing manhours and cost required for a ground investigation, by continuously executing a liquefaction determination and an evaluation of support performance of the ground by ...
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JP6824503B2 |
To provide a sediment sampling device capable of easily transporting and sampling columnar deposit of sand gravel on a lake bottom and a sea bottom.A sediment sampling device (10) comprises: a cylindrical penetration portion (12) receivi...
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