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JP2006194031A |
To shorten a work term for the construction of bridge pier foundation in a river or the like by rationalizing the construction process so that the construction of pier pillars can be completed within a drought period of the year.An enclo...
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JP3794682B2 |
To largely shorten a construction period of multistage timbering, to reduce a cost, and to obtain accuracy, a speed, and safety of work for installing the timbering in a sheet pile well foundation construction method. This method constru...
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JP2006169900A |
To provide an underground water draining device, a connecting pipe and a method for draining underground water, enabling to reduce cost and to improve strength of an outer pipe.The device is provided with a perforated pipe 11 having wate...
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JP3788245B2 |
To provide a cofferdam method capable of shortening a construction period and reducing a construction cost in a state hardly bringing 4 water pollution. A supporting device 24 is set in the neighborhood of a connecting section between th...
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JP3782855B2 |
To stop water easily and positively making use of water pressure applied to a water stop wall by installing a water stop seal at the bottom peripheral part of the water stop wall of truncated cone shape or truncated pyramid shape dividab...
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JP3756889B2 |
To reduce the construction cost by surely performing drainage in a construction job site of an underground structure. A drainage box 1 is formed by a drum part 2 for installing an underwater pump 5 and a cylindrical part 3 provided on th...
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JP3747198B2 |
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JP2005350979A |
To provide an economical cofferdam structure and cofferdam method.This cofferdam structure 18 is provided with a plurality of separably connected precast panels 20 and installed to surround an underwater structure such as a bridge founda...
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JP2005336807A |
To provide an underwater bottom plate constrution method of a bottomless structure, easy in construction without substantially requiring repair while surely constructing a bottom plate, by draining water, remarkably shortening the number...
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JP2005330763A |
To recover water injection capacity while continuing water injection from a condensate well and to increase the total amount of water injection compared with a conventional method.In this water injection method in a water recharge method...
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JP3713654B2 |
To provide a cut-off wall partition device with a valve for arranging the cut-off wall partition device with the valve on a cut-off wall, forming a pumping well to perform the underground water treatment of an excavation ground during ex...
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JP2005299222A |
To provide a cofferdam case body capable of applying a predetermined contact bearing pressure to cut-off packing by a simple method, and its installation method.In this cofferdam case body 1, a pressure receiving bodies 7 for receiving v...
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JP3707370B2 |
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JP2005282130A |
To reduce an embedded depth of an earth retaining wall, by preventing settlement and drying-up of a well of the surrounding ground by excessive pumping of underground water.In this ground excavation method, first of all, an air injection...
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JP3704613B2 |
To shorten the term of works, and to reduce cost by a method wherein an impervious shell, in which upper and lower sections are opened, is bottomed on the bottom of water and a peripheral water area is coffered, the bottom of water in th...
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JP3706368B2 |
To prevent the generation of an air zone in a ground by supplying the inside of a ground with only water by effectively discharging air to the outside even when air is mixed with pumped-up water. A series of pumping-up returning path 4 i...
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JPWO2003103866A1 |
The wall body (1) for preventing the spread of pollution is contaminated in order to effectively prevent the spread of harmful substances to the non-contaminated soil side at low cost with a relatively simple structure without the need f...
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JP2005248631A |
To provide a technology for a packer enabling its withdrawal from the ground together with a liquid conveying pipe, easy handling upon its expansion and a reliable sealing effect.The packer is provided with a bag body 2 which is expansib...
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JP2005248632A |
To provide a liquid injection method, a recharge method and a chemical grouting method by which the liquid like the ground water or the chemical is properly injected along a longitudinal direction of a pipe laid in the ground.Multi-layer...
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JP3687575B2 |
To provide an underground continuous wall execution work support system for performing optimal excavation work by providing information required in accordance with a ground state. A control server 26 is connected to an excavator 10 of re...
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JP2005220592A |
To provide a technique of constructing an underground structure in the soft ground for use as a free water underground storage facility, and constructing a building on the underground storage facility as a foundation structure.There is p...
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JP2005213804A |
To provide a construction method for a countermeasure against the spread of contamination upon construction work like the excavation of the ground by which secondary contamination caused by ground water existing in a contaminated aquifer...
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JP3681314B2 |
To provide a small-scale continuous wall construction method and a water seal device used therefor capable of fully placing concrete even to the joint portions of the continuous wall, eliminating concrete portions defectively placed and ...
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JP3673977B2 |
To enhance economical efficiency by constructing a land slide protection wall by contacting a pile and a pile with other in a water stop unnecessary depth directional section, and constructing the land slide protection wall by partially ...
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JP2005139865A |
To install a bottom block having a large weight without using a large-sized heavy machinery.The underwater temporary cofferdam installation is provided at least with a caisson 22 installed on a concrete face 2a of a water reservoir side ...
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JP3645862B2 |
To provide pumping equipment and an underground water level lowering device, which can be applied to existing equipment without a modification to it, and offer efficiency and high convenience. The pumping equipment is equipped with a vac...
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JP3643956B2 |
To provide a construction method of an artificial low water permeable layer adopted as a kind of underground water level lowering construction method at underground work of the large depth in the sand ground or the gravel ground having a...
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JP2005090015A |
To provide a ground excavating method which contributes to improved excavation efficiency while avoiding the subsidence of the peripheral ground.An earth retaining wall 10 is constructed at the time of the excavation of the ground. Befor...
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JP3631377B2 |
To provide a method capable of executing construction and repair of levee, etc., in a place where a large water current clashes within a short period of time. A hanging contraction rope is inserted in the mesh of a net around the circumf...
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JP2005048518A |
To improve the reliability of a revetment by conducting a treatment, in which an impervious material is stuck fast on the walls of structures, among the structures installed on a partition revetment when a waste dumping place is partitio...
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JP2005048404A |
To provide a cutoff structure for a radioactive waste disposal site, which easily and positively cuts off a water channel formed in a work area such as a gallery and an excavation influencing area, formed due to construction of the radio...
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JP2005002659A |
To enhance safety and efficiency of excavation work in an excavation area, and to efficiently prevent an adverse affect, such as ground subsidence, caused by lowering of a water level in peripheral ground, by restoring pumped groundwater...
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JP3607133B2 |
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JP3600892B2 |
To provide a method for lowering the water permeability for the purpose of spring water prevention of the sand ground or gravel ground and improvement of the weak ground. Two or more kinds of aqueous solutions which permeate easily into ...
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JP2004346646A |
To provide a technology for surely and rapidly preventing piping.In a construction method for preventing the piping, a periphery of a hole 1, wherein boiling regarded as a sign of the piping occurs, is surrounded on an excavated surface ...
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JP3598342B2 |
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JP3597427B2 |
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JP3599431B2 |
To provide the safe economical execution method of a temporary cofferdam by installing and executing the temporary cofferdam in a short period at any time regardless of the water level of a dam, etc. Pedestal concrete 2 is placed on the ...
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JP3590842B2 |
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JP2004316075A |
To provide a ground water lowering device capable of surely preventing the ground subsidence around the excavated areas or the damage of a building and lowering only the ground water in the excavated ground without lowering the ground wa...
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JP2004316133A |
To reduce costs and shorten a construction period by eliminating a limit to a difference between the size of a footing and that of a bridge pier.A temporary cofferdam 12 is composed of a cofferdam wall body 18 which is assembled in such ...
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JP3586744B2 |
To improve constructing performance by connecting a similar succeeding element between preceding elements constructed through a space and formed of water barrier plates and water barrier material. A water barrier plate 6 with a female ty...
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JP3583020B2 |
To provide an underground intercepting-plate construction method in which high impervious performance is maintained stably even when there is the defective filling of a sealing material or even when external force such as vibrations is a...
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JP3580647B2 |
To reduce the flow of groundwater current under a disposal area by shutting off with an impervious wall and providing a water permeable layer inside or outside this impervious wall. An impervious structure 20, which surrounds a stratum 1...
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JP2004285913A |
To utilize a large-sized submerged pump excellent in drainage performance by moving it in a construction site full of rocks on the ground.A submerged pump body is placed on or inside a base with a prescribed height, and an opening is pro...
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JP2004272173A |
To provide a system for efficiently supporting an underground dam project or the like which is a legitimate ground water development system by integrating geographic information system technology and underground dam technology, and integ...
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JP3567411B2 |
To perform pumping of underground water only from an aquifer present below in a state that a communication state between a well pipe and the aquifer formed above is disconnected through closing of a water intake valve by connecting a wat...
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JP3565476B2 |
To provide a purifying method and device for contaminated underground water and/or contaminated stratum high in purifying efficiency. In this purifying method, injection water is prepared by pumping up underground water from an undergrou...
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JP3552320B2 |
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JP2004197360A |
To secure stability by rapidly dealing with predictions about the occurrence of an abnormal external force.A cofferdam structure 10 is constructed when the repair, reinforcement and new installation of an underwater structure are perform...
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