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JP2007114079 |
To provide a subsidence measuring technique and a device thereof, capable of simply measuring a large number of depths, with superior cost benefit and workability.The subsidence measuring technique is characterized by burying a retractab...
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JP2007113290 |
To provide a method and a device for fixing a casing pipe separated except a specified section such as a discontinuous face position in a rock mass.This separation casing installation device 1 has two casings 5, 5, mechanical packers 6 f...
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JP2007098330 |
To provide a system which monitors the progress conditions of purification workings of contaminated soil and ground water and which is capable of properly coping with the situation after the initiation of the purification workings and of...
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JP2007101292 |
To provide a simple test method for the degree of decomposition in highly organic soil, instead of a phon post method, capable of more quantitatively accurately determining the degree of decomposition in the high organic soil in a sampli...
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JP3941070 |
To precisely evaluate the rigidity of the ground by measuring the original accurate rigidity of the ground without exerting the effect of load history on the ground and enhancing the correlation with another on-the-spot testing method su...
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JP3941065 |
To determine the physical quantities of various grounds by enhancing the accuracy of the result of measurement and providing a survey method with many loading stages and many cycles, when irregularities exist on a ground installation sur...
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JP3943049 |
To provide a casing pipe type soil sampler capable of increasing efficiency of sampling work of a soil sample and obtaining continuity of the soil sample sampled over a plurality of times. The inside of a sampler body 21 is filled with t...
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JP2007092353 |
To provide a permeability evaluation method capable of minutely detecting the continuity of an individual watercourse in a base rock and a device.A pair of boring holes 10 and 20 are bored in the base rock 1 in parallel with each other, ...
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JP3940608 |
To provide a tool which can easily measure an N value of hard ground. The tool which can easily measure the N value, i.e., the N value measuring tool, exhibits a rod-like shape as a whole, and has a mounting portion at one longitudinal e...
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JP2007085137 |
To provide a ground improvement work evaluation device capable of simultaneously evaluating performance while performing ground improvement work.An investigation torque curve 125 and an Nsw curve 127 for indicating investigation torque o...
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JP3935717 |
To provide a novel installation device for installing a geological survey implement underground. The device is used for installing underground geological survey implements 5 such as various kinds of measuring sensors or water pumps. The ...
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JP3931676 |
To obtain analytic results reflecting performed work and make them highly accurate. A drain material is driven into soft ground; a part above the drain material is covered with an airtight sheet; and the inside of the airtight sheet is d...
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JP3931798 |
To provide a tip jig for a device for measuring specific resistance whose rod inserting into the unhardened ground improving body is not a rod designed solely for measuring specific resistance but just a rod used for the ground improving...
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JP2007070870 |
To provide a ground surveying method of efficiently carrying out ground strength measurement and core collection, and to provide a ground surveying apparatus.The ground surveying method using a rotary percussion drill is carried out by e...
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JP3928857 |
To provide high durability and detecting capacity of high accuracy without causing severance of element wire of a cable and severance of the cable by preventing a transmission means for power supply and detection signals from receiving m...
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JP3928956 |
To provide a loading test method excellent in the rapidity or economical efficiency of a test and capable of easily grasping the capacity of a ground anchor by employing a fast loading test method as a loading test for the ground anchor,...
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JP2007056607 |
To provide a simply structured trigger device used in a place where it is difficult for a person to work, by which a trouble is hardly caused and misoperation can be prevented.The trigger device comprises a cylindrical container 2 one en...
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JP2007057472 |
To provide an in situ testing device that directly measures to investigate anisotropy of a foundation which has different rigidity in a vertical and a horizontal direction.The device includes an outer tube that is inserted in a borehole ...
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JP2007051492 |
To check a soil improvement effect by grasping an injection rate after the injection of solution-type silica grout into the ground and the status of the consolidation of the improved ground, and checking the distribution of the range and...
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JP2007051497 |
To check a soil improvement effect by grasping an injection rate after the injection of solution-type silica grout into the ground and the status of the consolidation of the improved ground, and checking the distribution of the range and...
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JP3921090 |
To easily, quickly and efficiently perform a geological investigation by automating it by automatic ram sounding. A hammer device 3 is loaded on the guide part 4a of a leader 4 provided on a self-propelled machine 2. A test rod 9 is moun...
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JP3919079 |
To provide a ground survey system for a building site, which enables an engineer having no high expert knowledge or experience concerning a ground survey to easily conduct a high-quality ground survey, and enables the engineer to easily ...
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JP2007046408 |
To provide a ground improvement evaluation device, a ground improvement evaluation method and a ground improvement evaluation program, capable of easily and highly accurately evaluating the improved ground by a construction method for re...
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JP2007047058 |
To provide a measurement system capable of measuring rock permeability relatively rapidly and precisely, performing measurement in an undisturbance in a cavity under the ground of bedrock, measuring the permeability at the original site ...
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JP3917900 |
To provide a reliable large earth pressure gauge having high dynamic responsiveness and sufficiently resistant to long-term use in spite of having a simple and inexpensive structure. When dynamic earth pressure is loaded on the large ear...
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JP2007039985 |
To provide a ground evaluation system based on a Swedish sounding test (SWS test), which can deal with the ground as an objective value in a manner eliminating an influence on a determination irrespective of whether the ground is of sand...
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JP3914248 |
To obtain a soil sampler which eliminates the influence on a peripheral ground of an underground hole as much as possible by preventing the inflow of muddy water and bubbles into the ground. The soil sampler 1 consists of a rotary-type o...
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JP3913930 |
To allow to take an unhardened sample of improved soil quickly, definitely and easily as it is without compressing from a predetermined position immediately after the work with an apparatus of a relatively simple configuration when takin...
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JP2007032163 |
To provide a single hole type permeability test method capable of easily executing permeability tests according to conditions of the ground, variations in water level in the ground, the inner diameter of a test hole, etc. without need to...
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JP2007032274 |
To provide a screw point hard to be broken and capable of providing accurate test values.In this screw point used for Sweden type sounding test and tests equivalent to that test, the side face of a drill part 2 is curved to the axis side...
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JP3908752 |
To provide a strain and settlement measuring method for testing vertical load on a pile wherein coring work is reduced by using a core hole for measuring a strain and the core hole for measuring settlement in common. The core hole 2 is f...
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JP2007016442 |
To provide a ground survey method and a ground survey system which enable an easy and quick estimation of a possibility of the liquefaction of a construction plan site.The ground survey system 1 includes an input means which inputs the s...
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JP3902202 |
To sample an excellent large soil core, by minimizing run-out when rotating a drill blade, without selecting a kind of tractor to be connected. This large undisturbed soil core sampling device is composed of a vertically movable lift par...
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JP3898986 |
To penetrate a rod in a state close to a manual penetration test so as to obtain correct data. This automatic penetration testing machine comprises an elevation base 7 of a prescribed weight composed to be movable up and down, and a rod ...
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JP3898867 |
To provide a penetration tester, capable of obtaining accurate test data by obtaining loss due to the resistance of soil, etc. In the penetration tester, test data is obtained in the process of the loading of a load on a penetration rod ...
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JP3898497 |
To provide a sampling apparatus by which a soil sample can be sampled surely in a so-called penetration test, in which the rotation of a penetration rod is performed without being transmitted to a sample sampling tube and by which the so...
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JP3893597 |
To provide a method of accurately calculating a stress, a coefficient of rupture mode support force, and an allowable stress intensity in a multi-layer ground. An equivalent conversion thickness theory provided by generalizing a Barber m...
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JP2006343125 |
To provide a penetration test device capable of determining the penetration resistance corresponding to a standard penetration test also in a centrifugal field.The penetration test device for determining the penetration resistance of a g...
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JP3892541 |
To develop practical procedures, methods applied to an underground investigation, by measuring a potential to be measures at a potential electrode corresponding to a current supplied to a current electrode at each measuring point on a me...
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JP3893069 |
To provide an automatic penetration tester and an automatic penetration test method capable of accurately detecting vibration caused by sound of friction between a screw point and soil. When the soil bearing capacity of a ground is inves...
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JP2006337191 |
To improve the accuracy of solution by reverse analysis, and to estimate a layer structure with a high accuracy.In the estimation method of the layer structure, the horizontal/vertical spectrum ratio is calculated based on observation da...
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JP2006328637 |
To provide an advanced double core tube sampler capable of increasing the excavating rate of a core ring to enable an efficient core ring by solving problems in a conventional double core tube sampler.This advance double core tube sample...
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JP2006329809 |
To readily evaluate the ground improved state, by using a relation curve between shear wave speed Vs and uniaxial compression strength qu, concerning a cement-based improved ground.In this deducing method of an improved soil ground chara...
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JP2006322141 |
To provide a sampling device with little disturbance capable of easily sampling a sample with little disturbance at a cutting face of a tunnel.The sampling device with little disturbance is equipped with the front outer pipe 1 excavating...
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JP2006322175 |
To provide a sampler for a soil sample capable of quickly and smoothly sampling the soil sample in a predetermined depth from a pit with a small diameter formed in the ground without being required for much time and effort.The sampler sa...
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JP3883298 |
To conduct an accurate geological survey by accurately grasping the developing time of impact force. Electric energy is fed to a metal fine wire 1a in a short time, an elastic wave propagated in the surveyed natural ground is generated b...
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JP3883119 |
To provide a verticality checking device for a steel pipe pile, which checks the verticality of the steel pipe pile in a very easy and correct manner. The verticality checking device 1 for the steel pipe pile includes a cover member 2, a...
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JP3883299 |
To perform a precise geophysical exploration by analyzing a received elastic wave by use of the time of the discharge current peak value when the discharge switch of a focus device is ON to supply electric energy to a conductive material...
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JP3884723 |
To provide a soil sampling apparatus which has a simple structure, not only makes use of scout holes formed in the ground as a result of the Swedish sounding method but also makes effective use of the simplicity that is a characteristic ...
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JP3880327 |
To easily judge stability to the infiltration of seawater in an under ground structure such as a submarine tunnel where leak of water including seawater exists. Flow of leaking water and concentration of sodium ions are measured through ...
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