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JP7254427B2 |
To provide a main stress calculation program and a method for calculating a main stress that solve problems of existing techniques and more specifically can allow calculation of a soil stress on the basis of a method for measurement whic...
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JP7252643B2 |
To provide a wire line type core sampling device that can be shared for soft rock and hard rock, and can simplify its structure and reduce its length.A wire line type core sampling device comprises an outer tube 12, an inner tube 15 that...
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JP7248241B2 |
To provide a method and a measuring device for confirming the effect of ground improvement that reduces variation, enables direct confirmation of the quality of improved ground, eliminates the risk that a measurement probe cannot be reco...
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JP2023042154A |
To enable the measurement of hydraulic conductivity from low permeability ground to medium-high permeability ground with a single permeability test device.Airtight water tanks for pouring test water in a permeability test device are comp...
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JP7246272B2 |
To provide a ground subsidence prediction system that can accurately predict ground subsidence at a specific point as an estimated ground subsidence point.The ground subsidence prediction system comprises: a first learning unit 11 that l...
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JP7245529B2 |
To provide a core sampling device allowing both usages for soft rocks and hard rocks and capable of reducing work load and time required for changeover operation.A core sampling device 10 is provided with a swivel head 11, an outer pipe ...
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JP7244315B2 |
To provide a soil layer survey device for measuring the soil layer further accurately, a control device and a control method for the soil layer survey device, and a soil layer survey method.A soil layer survey device 1 has a control devi...
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JP2023037761A |
To provide a ground hardness measuring device with high reliability of ground hardness measuring performance and a simple structure, and to provide a ground hardness measuring method with high reliability of ground hardness measuring per...
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JP7236781B2 |
Disclosed in the present invention are a testing apparatus and testing method for simulating an influence of a cavity existing near a pile end on bearing performance of a pile foundation. The testing apparatus comprises a semicircular mo...
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JP7237218B2 |
To directly measure soil bearing capacity of a bearing ground in a state in which an auger having a spiral blade around a rod shaft is penetrated into the ground when a foundation pile is constructed using the auger.A hydraulic jack 19 i...
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JP2023032495A |
To efficiently acquire ground information on a drilled point based on drilling data at the time of drilling with high accuracy.A ground estimation method for estimating ground information on a drilled point based on rotational torque at ...
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JP2023030643A |
To solve the problem of conventional technique that pore water pressure measurement for multiple aquifers at a landslide location or the like requires an expensive device and drilling of a large-diameter borehole, which incurs costs of d...
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JP2023027617A |
To provide an evaluation method of a ground improvement effect which can evaluate uniaxial compression strength of an improvement body by measuring an electric specific resistance after improvement.An evaluation method of a ground improv...
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JP7231453B2 |
To provide a detector which can precisely detect a flow resistance of a weak layer.A detector 1a includes: an optical fiber sensor 3 buried in a weak layer 10 alone; and a detector 4 detecting the flow resistance of the weak layer 10 acc...
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JP7227450B2 |
To provide a constant temperature curing device and a vehicle capable of retaining a sample at a prescribed temperature with high accuracy and stability.A constant temperature curing device comprises: a heat retaining tub 20 storing wate...
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JP7221849B2 |
To provide an imaging device protection mechanism and a geological investigation device which, when a probe reaches the bottom of a hole or abuts on a large rock, can determines such a fact and stops measurement.An imaging device protect...
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JP2023019752A |
To provide a calculating device easily obtaining a quality index of a ground.A calculating device 1 for obtaining a quality index of compaction of an embankment by a vibration wheel 31 comprises: a first input portion for inputting behav...
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JP7219911B2 |
To provide a vibration-type lightweight ground survey machine that maintains a portability, increases a depth of penetration, and improves workability.A typical configuration of a vibration-type lightweight ground survey machine has a pe...
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JP2023020538A |
To provide a sample collection device which is usable even in a harder stratum.A sample collection device has: a head part 2 which has an opening 211, and has arranged therein a screw for blocking the opening 211 by tightening; an outer ...
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JP2023012684A |
To provide a joining structure of a rod of a ground survey device capable of easily and safely attaching and detaching the rod even in a state where a load in a vertical direction acts on the rod.A joining structure of a rod of a ground ...
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JP2023012896A |
To enable a use of a guide pipe over a longer period than a conventional guide pipe.An inclination measurement device comprises: a main body part 101 that has a length along one axis A; a first axel 102 and second axel 103 that are arran...
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JP2023012683A |
To provide a method for calibrating a measurement device for subsurface exploration, which can facilitate calibration by using components used in subsurface exploration or simple jigs.The present invention is a method for calibrating a m...
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JP2023010295A |
To provide a method for evaluating the effect of ground improvement by a chemical injection method using electrical logging, which enables evaluation of a uniaxial compressive strength of an improved body by measuring electrical resistiv...
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JP2023009828A |
To provide a soil property management device and a soil property management method for evaluating properties of soil on a ground while reducing influence of dryness and unevenness of the ground.A soil property management device 1A of soi...
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JP7209295B2 |
To provide a linear body installation device and a linear body installation method which install a linear body in an underground with high accuracy in a spiral state.A linear body installation device 100 comprises: a winch 10 feeding a p...
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JP2023005787A |
To measure stiffness of soil material during a tamping test of the soil material.A test device 10 is used for a tamping test of soil material (sample 11). The test device 10 comprises a container 12 capable of containing the soil materia...
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JP2023005068A |
To evaluate strength characteristics of an object such as the ground over a wide range.A data acquisition section 31 acquires, from a laser scanner, point group data representing displacements of an object in time sequence, which are gen...
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JP2023005802A |
To estimate a dehydration rate of soil cement.A soil cement dehydration rate estimation method comprises steps of: measuring the water content of an unconsolidated sample of soil cement formed by mixing cement milk and local soil; measur...
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JP2023004662A |
To provide a test device for testing bubble characteristics of bubble-mixed soil produced by mixing bubbles in sample soil.A test device is a device for testing bubble characteristics of bubble-mixed soil produced by mixing bubbles in sa...
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JP7204160B1 |
An apparatus and method for measuring pull-out resistance based on a submarine slope site anchor plate foundation are provided. A measuring device according to one embodiment includes a bracket, a moving beam, a hoisting mechanism, a cyl...
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JP7198957B2 |
To provide a ground strength estimation method and system which can more simply and quickly estimate strengths of various object grounds on the land and in the water.A ground strength estimation method estimates a strength of an object g...
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JP2022191690A |
To provide a load displacement relationship estimation method that can improve estimation accuracy of a load displacement relationship, and a press-in construction system.A load displacement relationship estimation method includes a desi...
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JP7195223B2 |
To efficiently install a linear body in the foundation.A linear body installation method includes: an insertion step of inserting a unit 100 for linear body installation including a rod like member 10 having an optical fiber cable 1 moun...
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JP2022189557A |
To obtain an adhesive force and an internal friction angle of a soft bedrock by using a boring core collected from the soft bedrock by all-core boring.A soft bedrock evaluation method comprises the steps of: excavating a bedrock and coll...
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JP2022187617A |
To provide a soil sampler having a lock mechanism capable of easily fixing and releasing the position of a rod without needing rotation power within a short time.This soil sampler comprises a rod 1 and a cylindrical body 2 into which the...
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JP2022187241A |
To provide a method in which a variety of base shapes can be estimated with high accuracy.An estimation method of a base shape includes: figuring out, on one hand, an observed natural vibration mode by applying a FDD method to a response...
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JP7190692B2 |
To provide a pile hole formation device capable of improving accuracy of a measurement value of ground strength.A pile hole formation device 100 including a plurality of auger rods 10, 20 connected vertically and an auger head 30 at a ti...
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JP2022185846A |
To provide a soil information acquisition system capable of acquiring soil information at an appropriate timing at a work site, and a work machine equipped with the system.A soil information acquisition system 100 has a main body positio...
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JP7186064B2 |
To provide a wave measuring device and a wave measuring method that solve problems in the prior art, that is, that can measure P wave speed and S wave speed in the ground, allow a receiver to be placed in each layer even if the ground is...
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JP7185871B2 |
To provide a pile hole formation device capable of improving accuracy of a measurement value of ground strength.A pile hole formation device comprises: a solidification material force-feed pipe vertically extending in a hollow part of a ...
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JP7184277B2 |
To provide a pile hole formation device capable of improving accuracy of a measurement value of ground strength.A pile hole formation device 100 including a plurality of auger rods 10, 20 connected vertically and an auger head 30 at a ti...
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JP7184276B2 |
To provide a pile hole formation device capable of improving accuracy of a measurement value of ground strength.A pile hole formation device 100 including a plurality of auger rods 10, 20 connected vertically and an auger head 30 at a ti...
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JP7183855B2 |
To provide a reliability quantification method for dominant frequencies that are estimated based on measurement results for microtremors.A ground estimation method for estimating dominant frequencies of a ground that has hard bedrock bel...
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JP7184278B2 |
To provide a pile hole formation device capable of improving accuracy of a measurement value of ground strength.A pile hole formation device comprises: a solidification material force-feed pipe 53 vertically extending in a hollow part of...
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JP7181559B2 |
To provide a progress situation of soil survey in real time.A server device 20 includes: means 23 for storing position data of a survey point in association with survey status data indicating a progress situation of soil survey with resp...
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JP7181532B2 |
To provide a depth estimation method of a supporting ground which can estimate a depth of a supporting ground with high accuracy even in a drowned valley or the like.When estimating a depth of a supporting ground, the depth estimation me...
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JP7178525B1 |
[Problem] Although there is no conventional test method that adequately captures the liquefaction strength of the ground during an earthquake, a test method that solves this problem by applying repeated loads similar to an earthquake to ...
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JP7176941B2 |
To provide an estimation method allowing an N value and a fine-ground fraction content of the ground to be estimated better in accuracy.In a system 1, teacher data are produced based on boring data and multiple drilling data as a prelimi...
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JP7172400B2 |
To provide a geological evaluation system, geological evaluation method, and geological evaluation program that can efficiently perform proper geological evaluation in a labor-saving manner.A control unit 21 for a geological evaluation d...
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JP2022168592A |
To prevent a cone from being left underground, and to concentrate an impact force at a cone tip without deforming or bending a rod.A rod 10 for dynamic cone penetration test that is used in a test investigating a ground comprises: a tip ...
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