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JP2009179945 |
To provide a well conduit for a road, conducive to the construction of the road even in a place where groundwater wells up from ground in a lower stratum, and a construction method for the well conduit for the road; and to provide a well...
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JP2009121062 |
To provide a method for preventing the oxidization of groundwater in a well in the nonuse of the well, and the well for use in the method.The well 1 comprises: a column pipe 13 for collecting the groundwater inward; an injection section ...
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JP2009121215 |
To shorten a construction period when building a sump which is cast in place.At the bottom of a water tank, the sump is configured with a box body 1 made of reinforced concrete, enamel or metal with the inner/outer faces coated and a cut...
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JP2009121063 |
To provide a service well which is usable during and after works such as the construction of an underground structure and not damaged even if a horizontal load due to an earthquake acts thereon and also provide a method of constructing t...
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JP2009121174 |
To provide a freezing device, a frozen ground calculation system, a freezing method, etc. for shortening the frozen ground formation period by knowing the minimum time of frozen ground formation required for placing the frozen ground in ...
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JP2009102836 |
To provide a sealing method for civil engineering work, which is easily carried out only with a low cost, for preventing water leakage and sand leakage from a gap between an earth retaining wall and an existing underground structure even...
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JP2009102837 |
To provide an inter-structure sealing bag installed in the gap between structures and capable of easily and properly preventing water from leaking by a hydraulic pressure acting to the gap from the outside.This inter-structure sealing ba...
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JP2009085005 |
To prevent water from flowing in the inside and outside of a partition by improving a deposited layer under a caisson by impermeable treatment and also performing the impermeable treatment for the base of the caisson at a partition bulkh...
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JP2009074269 |
To provide an underwater structure reinforcing method which is implemented by constructing a cofferdam wall around an underwater structure, extending short struts between the cofferdam wall and the underwater structure, and finishing add...
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JP2009068196 |
To suppress an increase in a construction period and costs, which are required for a cofferdam construction method.A bearing pile 24 is installed on the outside of a place for installing the cofferdam wall 10, and a hanging girder 26 is ...
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JP2009052202 |
To easily maintain the quality of a bearing pile to be installed in the same position, while reducing labor for drilling a deep well hole.A pile hole 5 is drilled; the deep-well hole 1 with a diameter smaller than that of the pile hole 5...
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JP2009046838 |
To provide a condensate structure capable of getting favorable condensate for a long period.This structure of a condensate structure comprises perforated tubes and a water permeable wall. The water permeable wall is formed by filling an ...
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JP2009019449 |
To ensure high water cut-off performance without being influenced caused by the inclination, unevenness and the like of the top face of a footing and an external force caused by a water flow and a water level difference.A temporary coffe...
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JP2008297748 |
To provide a cofferdam construction method which enables a large working space with no timbering to be easily secured on the inside of a cofferdam structure, and which enables construction to be inexpensively performed in a short period ...
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JP2008297749 |
To provide a cofferdam construction method at a great application water depth, and to reduce a work burden on a worker, and to shorten a construction period, by reducing diving operation steps, in the cofferdam construction method.A cut-...
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JP2008223434 |
To provide a method for easily constructing an underground structure in which a pipe or the like is buried, used in constructing a well in a short time while preventing boiling.A well drilling guide 1 is erected in a soil cement column w...
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JP2008223437 |
To provide an underground wall structure enabling extension of a well and a construction method for it.A soil cement column wall 2 is constructed by filling a column drilled hole formed by a single-shaft or multi-shaft earth auger with s...
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JP2008208680 |
To provide a method of constructing an underwater steel pipe capable of reasonably forming a dry space under water in sheet impermeable dam lakes and water storage ponds without lowering the level of water therein or without closing them...
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JP2008175059 |
To provide a temporary cofferdam work caisson and its installation method by which water pressure control and a sufficient water stopping property can be assured.In the upper open type temporary cofferdam work caisson 1 formed into a rin...
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JP2008163641 |
To provide a construction method for a closing wall, which enables the closing wall to be easily constructed by eliminating restrictions on the work environment directly below a waterborne structure.In this construction method, the water...
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JP2008157016 |
To provide a collecting pipe capable of improving a whole drain efficiency, without having adverse influence on workability and cost, by improving the drain efficiency without impairing water collection efficiency of a conventional colle...
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JP2008095330 |
To provide a work caisson for temporary cofferdam capable of dispensing with underwater work for long hours in great depth under the water such as placing underwater concrete.This work caisson 1 for temporary cofferdam is constituted in ...
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JP2008057201 |
To provide a drain device for ground sufficiently adaptable even to multiple layers of aquifers and capable of enhancing draining efficiency in spite of an air jet well method by enclosing an inner pipe for pumping and an air pipe for ai...
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JP2008025132 |
To provide a groundwater-level decreasing method which enables a riser pipe to be efficiently driven into ground below a depth of about 20 m, and which enables a groundwater level to be decreased below the deep ground, for example, with ...
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JP2008025249 |
To provide a method of cutting off water around a drift by composite grout, which is for use in geological disposal of high-level radioactive waste etc., and achieves water cutoff with high reliability by using a low-pH cement that is lo...
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JP2008025128 |
To obtain a riser pipe which can efficiently prevent the diffusion of polluted soil by discharging groundwater in a polluted soil area from the polluted soil area, when the polluted soil exists in the area with a formed groundwater disch...
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JP2008019709 |
To install a underground continuous wall in the ground where an obstacle is contained with the obstacle remained in the ground.The underground continuous wall cutter 10 is provided with a frame 13 having a linear excavation connection pa...
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JP2008019678 |
To provide an effective and appropriate construction method sufficiently improving structural stability and reliability by sufficiently rationalizing the construction of a membrane type tank facility in a low temperature base rock.Freezi...
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JP2007146568 |
To provide a groundwater draining method which exerts high efficiency in collecting and draining groundwater in a landslide slope, and to provide a catchment well.The groundwater draining method is provided for draining groundwater under...
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JP3967473 |
To provide a construction method of an underground structure capable of controlling the gush of ground water while maintaining the inside of an excavation working chamber in the same atmospheric pressure as that on the ground and control...
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JP2007120064 |
To provide a construction method of a low temperature underground tank institution capable of efficiently carrying out work of the low temperature underground tank institution and reducing a construction cost as well as the shortening of...
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JP2007100401 |
To provide an undergroundwater level lowering apparatus which is lightweight, equipped with a decompressing means free from an influence of an undergroundwater level, simple and economically advantageous, and applicable to execution of a...
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JP3928226 |
To ensure the water cutoff properties of temporary cofferdam works. The temporary cofferdam works have a plurality of precast panels 20 being parted along the vertical direction and peripheral direction of a pier and having the same cons...
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JP3928225 |
To carry out economical execution by simply ensuring the stability of temporary cofferdam works. Temporary cofferdam works have a plurality of precast panels 20 being parted along the vertical direction and peripheral direction of a pier...
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JP3930345 |
To easily operate small-scale temporary coffering in a narrow space below a girder during aseismatic reinforcement work and the like for a bridge girder lower part when a column type structural body is immersed in the water. In this simp...
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JP3926804 |
To provide a bottom plate water cut-off method in an open caisson construction method, capable of surely preventing water leakage of a bottom part of a caisson skeleton in a short time. The caisson skeleton 1 is provided with a pipe 3 fo...
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JP3921161 |
To correspond even to rocking in a narrow space at a limited construction site and on board for expanding the utilization of steel slag, and to efficiently conduct neutralizing treatment. Steel slag as an infilling is charged to a caisso...
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JP2007009564 |
To provide a water filling pipe structure of return underground water and a condensate well structure, capable of dispensing with cleaning operation, by preventing the occurrence of clogging by a floating suspended substance, bacteria an...
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JP3888547 |
To provide an undergroundwater passage type pneumatic caisson, which does not obstruct the passage of undergroundwater more than required. In the pneumatic caisson 11 with an approximately cylindrical caisson skeleton 12, a work-room sla...
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JP3888174 |
To increase a construction efficiency. In this cofferdam closure method, the outer periphery of a bridge pier 1 is surrounded by a cylindrical cofferdam closure wall 14, the inside water is drained, and a reinforcing work is done. After ...
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JP2006322155 |
To provide a soldier pile lagging method capable of processing subsoil water or the like capable of being executed for constructing an earth retaining wall in the case the ground is excavated.The ground aiming for excavations is excavate...
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JP3877534 |
To provide a sealing structure applicable to other general joint seals than a joint for a steel pipe sheet pile while solving the problems that a waste permeated water flows out of the joint for the steel pipe sheet pile, and its executi...
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JP3870399 |
To provide an underground water control method for basement construction for not lowering a underground water level in the vicinity of an excavated site while treating the surplus soil of the excavated ground as dry surplus soil in const...
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JP2006291474 |
To provide a control system of ground water and a control method of the ground water by which an amount of pumped water, an amount of recharged water, and a level of the ground water around a pumping well and a recharging well are automa...
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JP3867984 |
To restrain noise of a vacuum deep well system pumping device; and to realize a small scale of the device. The vacuum deep well system pumping device has a casing pipe 10 embedded in a well W of the ground E, a separator tank 15 arranged...
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JP2006283484 |
To provide a drainage pipe construction method preventing a drainage pipe from being pulled out together with the drainage pipe and/or being twisted when the outer pipe of a double pipe is pulled out when the drainage pipe (drainage pipe...
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JP2006263557 |
To provide an excavation method of unneeded buried items for not leaving a wall in the ground after removing the unneeded buried items.At the time of forming an excavation hole H in an excavation object area, a frozen pipe 1 is embedded ...
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JP2006265964 |
To provide a drainage treatment method capable of carrying out excavation not higher than a groundwater level in an impervious layer and carrying out drainage without giving any influence on the ground.A steel pipe 21 is driven by boring...
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JP2006249771 |
To provide sure water cut-off performance, regardless of the existence of unevenness and an inclination of an existing footing, when cutting off water by placing a temporary closing work on the existing footing of an underwater structure...
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JP2006249685 |
To reduce an influence of an external force and manufacturing costs and enable reuse, by reducing the outside dimensions of a working caisson.The working caisson 10, which is composed of an annular steel shell formed by preassembling a p...
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