CN1260423A - Solidified-material injection management method used in mechanical-agitating type deep-mixing treatment construction - Google Patents
Solidified-material injection management method used in mechanical-agitating type deep-mixing treatment construction Download PDFInfo
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- CN1260423A CN1260423A CN 99111684 CN99111684A CN1260423A CN 1260423 A CN1260423 A CN 1260423A CN 99111684 CN99111684 CN 99111684 CN 99111684 A CN99111684 A CN 99111684A CN 1260423 A CN1260423 A CN 1260423A
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Abstract
To create a ground improvement body having uniform strength by improving the creating ground improvement body to higher quality. Original ground data on a ground improvement object area is pregathered by a preliminary survey to decide solidifying material injection quantity per unit m3 on the basis of the obtained original ground data, and after setting the ratio of solidifying material quantity delivered from a first delivery port 10 and a second delivery port 11 with every ground classification, improvement time data containing an intrusion and/or pull-up speed of at least an agitating blade 1 is measured at execution work. Delivery quantity of a solidifying material is automatically controlled so that the solidifying material injection quantity becomes constant per unit m3 even if the intrusion and/or pull-up speed fluctuates by controlling a rotating speed of grout pumps (32A to 32D) for the solidifying material by interlocking with this intrusion and/or pull-up speed data, and this solidifying material delivery quantity is controlled so as to be interlocked according to the solidifying material delivery ratio from the first delivery port 10 and the second delivery port 11 preset with every ground classification.
Description
The present invention is that relevant the utilization is made of epimere side agitator and hypomere side agitator, and two positions being located at first discharge opening below the front end of shaft and being located at second discharge opening of the outside, bottom agitator curing material that spues, make aforementioned epimere side agitator and hypomere side agitator be the mechanical type agitator of relative counter-rotating simultaneously, heavy in section ground improvement body in the solidified-material injection management method of mechanical agitation type deep-mixing treatment construction but high efficiency, high strength are constructed.
Commonly using, is the ground improvement worker method that adopts deep layer mixed processing worker method to cause etc. as shore protection, mole, territory dyke, road and soil mostly for a long time.This worker's method is to adopt the mixed processing digging machine with shaft, by the curing material that mixes cement slurry etc. in situ, utilizes both chemicosolidifying to act on and causes the ground improvement body in the domain.
Yet, always general commonly used mixed processing digging machine, that is the constructor who around shaft, is installed with agitator to wish to get bigbore ground improvement body be inconvenient.The uniaxial compressive strength of the ground improvement body that is caused is roughly 5-15kgf/cm
2(28 days intensity) has the problem that only can get low intensive modified body etc. to exist.
In view of this plant problem points, the applicant's etc. a people is in Japanese kokai publication hei 8-184032 number of previous proposition, and proposition can solve the agitator of the special tectonic of problem point at one stroke.This agitator is as shown in Figure 1, to the epimere side agitator 3 that forms by upper outside agitator 4 and upper inner agitator 5, the two sections agitators that constitute up and down that constituted with the hypomere side agitator 6 that forms by bottom outside agitator 7 and lower inside agitator 8, make upper outside agitator 4 and lower inside agitator 8 be rotated into positive direction, make upper inner agitator 5 and bottom outside agitator 7 be rotated into contrary direction on the other hand.The concrete slurry is to form two positions of second discharge opening 11 make first discharge opening 10 below the front end that is arranged at shaft 12 and the outside left of the outside, what bottom agitator 7 is set can spue.
If during according to aforesaid agitator, can give the agitator constructor of practicability with present situation, make the heavy caliber ground improvement body that to improve footpath 1500 ψ mm, horizontal tail owing to each agitator staggers mutually simultaneously, can get powerful shearing strength, for the concrete slurry can be mixed really with mound, can get intensity on the 28th is 40-70kgf/cm
2High-intensity ground improvement body.
The construction of agitator that comprises aforementioned special tectonic is interior, in deep layer mixed processing worker method extremely so far, soil property proterties with assurance construction object domain before these fortification is a purpose, hole, standard penetration test, simultaneously the test portion that is got by sampling is carried out compatibility test, determine the cooperation and the injection rate of suitable curing material.
Yet, so the cooperation and the injection rate of the curing material of decision are fixed values, can make clay layer and layer of sand lamination to the depth direction of domain, even or the domain formation of just giving drastic change for the stratum, at the ground improvement body of at least one, by begin to be injected into till the end between, specify the curing material that cooperates often to be injected with fixing injection rate.
Even in the situation of the stirring of aforesaid special tectonic, be not limited to the domain kind by the ratio that spues of aforementioned first discharge opening and second discharge opening, Chang Zhiwei fixes (5: 5), and is cured the injection of material by certain injection rate.Though therefore the ground improvement machine that can be commonly used by the structural property of agitator has suitable improvement in the dispersiveness of domain intensity, but still each domain kind is had the dispersiveness of compressive strength to a certain degree.
So main purpose of the present invention, it is the compound domain that gives lamination in the different ground mass-energy of proterties in depth direction, each domain kind of each layer is solidified the injection of material by management, make great efforts to cause the ground improvement body of uniform intensity simultaneously in the raising of the quality of the ground improvement height that is caused.
For solving aforementioned problems, first form of the present invention is the epimere side agitator to being formed by upper outside agitator and upper inner agitator, constitute with the hypomere side agitator that forms by bottom outside agitator and lower inside agitator, and two positions of first discharge opening below giving the front end that is arranged at shaft and second discharge opening curing material that spues through giving the outside left that is arranged at bottom outside agitator, aforementioned upper outside agitator and lower inside agitator are rotated towards positive direction, make the mechanical type agitator of aforementioned upper inner agitator and bottom outside agitator on the other hand towards contrary direction rotation, employing has one or the digging machine of the most axles solidified-material injection management method when carrying out deep-mixing treatment construction
In advance, take the former domain data of ground improvement object domain according to pretesting,, determine per unit m3 and solidify the material injection rate based on the former domain of gained data, earlier the ratio of the curing material amount that will be spued by aforementioned first discharge opening and second discharge opening to each domain kind is being set
When practice of construction, data when instrumentation comprises the improvement of the injection of agitator at least and/or pull rate, while is injection and/or pull rate data interlock therewith, by controlling by solidifying the rotation number of material, even make per unit m to also controlling the discharge-amount that solidifies material automatically under aforementioned injection and/or the pull rate generation change with grout pump
3Solidify the material injection rate and become fixing,, and carry out the control that this solidifies the material discharge-amount simultaneously according to from first discharge opening and the curing material of second discharge opening ratio interlock that spues of each domain kind through giving prior setting.
Secondly second form of invention is the epimere side agitator to being formed by upper outside agitator and upper inner agitator, constitute with the hypomere side agitator that forms by bottom outside agitator and lower inside agitator, and two positions of first discharge opening below giving the front end that is arranged at shaft and second discharge opening curing material that spues through giving the outside left that is arranged at bottom outside agitator, aforementioned upper outside agitator and lower inside agitator are rotated towards positive direction, make the mechanical type agitator of aforementioned upper inner agitator and bottom outside agitator on the other hand towards contrary direction rotation, employing has one or the digging machine of the most axles solidified-material injection management method when carrying out deep-mixing treatment construction
In advance, take the former domain data of ground improvement object domain,, each domain kind is determined per unit m based on the former domain of gained data according to pretesting
3Solidify the material injection rate, the ratio of the curing material amount that will be spued by aforementioned first discharge opening and second discharge opening to each domain kind is earlier being set simultaneously,
When practice of construction, data when instrumentation comprises the improvement of the injection of agitator at least and/or pull rate, while is injection and/or pull rate data interlock therewith, by controlling by solidifying the rotation number of material, even make per unit m to also controlling the discharge-amount that solidifies material automatically under aforementioned injection and/or the pull rate generation change with grout pump
3Solidify the material injection rate and become fixing,, and carry out the control that this solidifies the material discharge-amount simultaneously according to from first discharge opening and the curing material of second discharge opening ratio that spues of each domain kind through giving prior setting.
First form of aforementioned invention and second form of invention, the situation in first form of inventing makes per unit m to the total length along the ground improvement body
3Solidifying the material injection rate becomes fixing, on the point that second form of invention is then only set respectively each domain kind is different, even generate change on the injection of aforementioned agitator and/or pull rate, the control point that solidifies the discharge-amount of material makes per unit m automatically
3Solidify the material injection rate and become designated value, and according to each domain kind from spue ratio and give interlock of the curing material of aforementioned first discharge opening of prior setting and second discharge opening, the point that carries out this control simultaneously is identical.
In these situations, material is solidified in stable supply, for being cooperated, it often becomes necessarily simultaneously, according to the continuous manufacturing that is cured material of continuous pugging mullering mixer, utilize load cell (load cell) to monitor the weight of this continuous pugging mullering mixer, simultaneously amount of concrete and the water that is devoted this continuous pugging mullering mixer is measured, the curing material density of utilizing the continuous mixer manufacturing is to utilize the line upper density meter sampling instrumentation that is arranged in the pipe arrangement, utilize to set cooperate and the comparison of the actual cooperation of instrumentation, to be modified to good any one of the input amount of aforementioned amount of concrete and water.
Below, consult drawing and describe example of the present invention in detail, wherein:
Fig. 1 is the stirring alar part amplification profile of domain used in the present invention digging machine;
Fig. 2 is the bottom view of Fig. 1;
Fig. 3 is the skeleton diagram of deep layer hybrid processing system;
Fig. 4 is the setting illustration of ratio of spuing;
Fig. 5 is the ground improvement instruction drawing that utilizes this method.
The detailed construction explanation of the agitator 1 shown in this form example is that committee is by the explanation of Japanese kokai publication hei 8-184032 communique, only if when giving diagrammatic illustration, this agitator 1 is that the agitator with two types is constituted, be installed on puddler R separately, the stirring-head 2 of the dual pipe structure on the front end of R, be by the upper outside agitator 4 of the upper side of being located at head axle 12 and the epimere side agitator 3 that upper inner agitator 5 forms, two sections agitators that constituted up and down with the hypomere side agitator 6 that forms by agitator 7 and lower inside agitator 8 outside the bottom of the lower side of being located at head axle 12, by integral body be connected with upper outside agitator 4 and lower inside agitator 8 make with interior axle simultaneously to the positive direction rotation, be connected with upper inner agitator 5 and the outside, bottom agitator 7 simultaneously to contrary direction rotation by integral body on the other hand.And the front end in head axle 12 has small-bore drill bit 9 (auger).
Mutual stirring-head 2, stirring-head 2 is to be situated between connected by whirligig utilization connection material 13, as shown in Figure 2, upper outside agitator 4 be with the plane mode of looking be configured to the improvement territory have overlapped as, utilize the once construction of agitator 1, for example become with the ground improvement body of the bore of 1500 ψ can two together with the time cause.
On the other hand, the spuing of concrete slurry is as two positions of 11 of second discharge openings of becoming first discharge opening 10 below the front end that is arranged at head axle 12 and being arranged at the outside left of the outside, bottom agitator 7 spue.
In aforesaid agitator 1, to the penetration process in domain and/or lift process, the cement slurry is spued by two positions of aforementioned first discharge opening 10 and second discharge opening 11, mix simultaneously and between original position soil, in the domain, cause modified body.Particularly, at penetration process, the cement slurry that is spued by first discharge opening 10 is to be mixed for the first time by drill bit and native sand at first, and carries out first mixing at the main outer circumferential side and the native sand of hypomere side agitator 6 at first at first by the cement slurry that second discharge opening 11 is spued.Its Hou, the heavy caliber zone that comprises aforementioned stirring territory at the process epimere side agitator 3 of epimere side agitator 3 with mixing of secondary through giving injection, at aforementioned epimere side agitator 3 and hypomere side agitator 6, because each horizontal tail part is interlaced, can carry out powerful shear agitation, become mixing that cement slurry and native sand can be certain.
Utilize the deep layer hybrid processing system of aforementioned agitator 1, be as shown in Figure 3 as, the curing material that utilizes two system is made the cement slurry of line manufacturing, temporarily be stored in the mixer 30, utilize infusion pump unit P to be sent to digging machine M thus.
Below, if when giving concrete detailed description, being stored in cement bulk chamber 20A through giving, the cement of 20B is that 21B is delivered to cement weigh feeder 22A, 22B by screw rod feed-in machine 21A.This cement weigh feeder 22A, 22B are connected with to the lower port of storage tank and are provided with rotary-type feed-in device 22a, the device of 22b, and to continuous pugging mullering mixer 23A, 23B forms with specified amount and supplies with cement continuously.Again, the water that is mixed is to utilize clear water storage tank 25A, 25B and become and can give pump and supply with it.The input amount of aforementioned cement is that the rotation number of 22b can be adjusted by rotary-type feed-in device 22a, and water is to utilize the flow meter 26A that is located in the supply line, 26B institute instrumentation, utilizing suction pump 27A, the rotation number control of 27B can be adjusted.
Aforementioned continuous pugging mullering mixer 23A, 23B utilizes the stronger whirlpool grain betide in the mixer storage tank that cement is disperseed, adopt simultaneously between disk by rotation at a high speed and shell in suffered shearing can be efficient and continuous the cement slurry of having stabilized of quality bills of materials.This continuous pugging mullering mixer 23A, 23B is that 24... supports by load cell 24, the storage tank inner capacities often monitored, becomes cement input amount and water quantity delivered simultaneously and can give being controlled to set and cooperate.That is, the wired upper density meter 28A of configuration in from the loop of disk, 28B as for the cement slurry instrumentation of can taking a sample in good time, becomes any one revisal given of the input amount that makes aforementioned cement amount and water with setting the comparison between cooperating by this actual cooperation through giving instrumentation.
By aforementioned continuous pugging mullering mixer 23A, the cement slurry that 23B sends is supplied with aqueous slurry to digging machine M owing to can stabilize, and can give temporary transient being stored in as in the mixer 30 of snubber.And, to the sendout of mixer 30 be do not stop utilize flow meter 29A, 29B gives instrumentation.
The cement slurry by of the supply of aforementioned mixer 30 to digging machine M, be to utilize by mixer 30 to send line 31A-31D to 4 of digging machine M, and be arranged at these grout pump 32A-32D that respectively send line 31A-31D and carried out.These add up to 4 sending within the line 31A-31D, two be first discharge opening with sending line, remaining two is that second discharge opening is sent line.
In aforementioned infusion pump unit P, it is variable that the motor rotation number of each grout pump 32A-32D can be utilized inverter controlling to make to become, become the quantity delivered that can set the cement slurry arbitrarily, the sendout of respectively sending line 31A-31D is to become to utilize the flow meter 33A-33D that is arranged in each line to give as the instrumentation.
More than each instrumentation of the cement slurry factory of Xiang Xishuominging and control machine are managed concentratedly in the caretaker room S of other setting fully.
On the other hand, aspect digging machine M, data system gives instrumentation during the stirring of depth of penetration, injection speed, agitator rotation number, torque current value etc., and data are to give delivering to caretaker room S during these stirring, becomes simultaneously with monitor with the aforementioned flow value of sending line 31A-31D etc. to show.
When ground improvement is constructed, take in advance the former domain data of ground improvement object domain by pretesting, being as the criterion with the former domain data of gained determines per unit m
3Curing material injection rate (injection rate), simultaneously each domain kind is set out the ratio of the curing material amount that spues by aforementioned first discharge opening 10 and second discharge opening 11, the controller of caretaker room S is imported this setting data, input improvement simultaneously depth H, water and cement ratio, each condition of ground improvement of setting injection speed, setting pull rate etc.
As supposing as shown in Figure 4, have mud (T in the upper strata
1Layer), there is layer of sand (T in the middle level
2Layer), there is clay layer (T in lower floor
3The situation in the domain that plural number layer) constitutes is set per unit m
3Curing material injection rate V, simultaneously to each each stratum, for example: each each layer is set out the injection ratio of first discharge opening 10 and second discharge opening 11, make T
1Interval; First discharge opening: second discharge opening=4: 6, T
2Interval; First discharge opening: second discharge opening=5: 5, T
3Interval; First discharge opening: second discharge opening=3: 7.So make the variation injection ratio, become and to cause the uniform ground improvement body of intensity by difference according to the domain kind.That is, according to geology become the branch breaking up variation of the curing material that clay matter injected so, common order with mud, clay, by the ratio that spues that increases from second discharge opening 11 in the outside, the cement slurry is become in the improvement field can mix more uniformly, and the dispersiveness of the intensity between the kind of domain can diminish.
The input of above ground improvement condition then forms the position to the domain modified body if give when finishing, and carries out the work that aligns mandrel of agitator 1, and the limit makes two stirring-heads 2,2 be relative counter-rotating, and the limit makes mixes in the wing 1 injection domain.
The injection of agitator 1, be under the condition of constant speed, to carry out according to the injection speed that the controller of caretaker room S is imported, the reason that sharply changes etc. owing to the stratum only, inevitably in the situation that can generate variation aspect injection or the pull rate, so at present embodiment is the injection and/or the pull rate interlock of frequent and agitator 1, can give automatic control by the motor rotation number of utilizing inverter controlling grout pump 32A-32D and make per unit m
3Injection rate become fixing (following this control is called ratio quantitatively control).
This ratio quantitatively control mixes the wing 1 through giving the process of injection, each stratum T of Bian Yiyi
1-T
3First discharge opening that sets and the injection ratio limit of second discharge opening are given interlock and are carried out.And, solidify the pattern that spues of material, be to have at penetration process or lift process or at penetration process and lift three kinds of patterns that two processes of process are carried out, only, whether pay no attention at penetration process or lift process, solidify between the material spuing, solidify spuing of material and be with the ratio of the injection speed interlock of agitator quantitatively control carry out first discharge opening of setting on each each stratum simultaneously: give interlock control equally under the injection ratio of second discharge opening.
That is, as shown in Figure 5 as, following the carrying out in T1 interval, stratum in 4: 6 the condition of ratio that spues quantitatively controlled with the ratio of injection speed interlock, if charged into stratum T
2When interval, the ratio that spues is to give automatically setting 5: 5 again for, quantitatively controls with the ratio of injection speed interlock following the carrying out of the condition of this ratio that spues.Thereafter, shown in Fig. 5 (C), if carry out when reaching designated depth after front end stirs again, in the process that lifts (spuing) of Fig. 5 (D), in the following cement slurry that further forms of condition and the mixing of native sand of pull rate in advance through giving setting.
Yet, be to make along the total length of ground improvement body to make per unit m at embodiment
3Curing material injection rate become fixingly, only also can change injection rate according to each stratum kind.That is, it is different although the geology proterties is complied with each degree of depth, but the soil layer that cooperates minimum intensity determines the injection rate of solidifying material, the situation of utilizing aforementioned curing material injection rate to improve along the total length of ground improvement body, owing to can become the part that makes injection rate become the part surplus, for example also can injection rate is changed make the injection rate of mud T1 to each stratum be 250/m
3, the injection rate of layer of sand T2 is 200/m
3, the injection rate of clay layer T3 is 300/m
3Certainly, even in this kind situation, quantitatively control in the following ratio that is cured material of the condition of each injection ratio of each stratum through giving setting.
As above-mentioned, if according to the present invention, the different geology of proterties in depth direction through giving the compound domain of lamination, be quantitatively to control with injection speed or pull rate interlock and with ratio to solidify the material amount, in each each stratum kind, set the injection ratio of first discharge opening and second discharge opening simultaneously, under this injection ratio, carry out aforementioned ratio and quantitatively control, so the ground improvement body that caused there is no the dispersiveness on the intensity, become can be more even and high-quality the ground improvement body.
Again, each each stratum kind is solidified the curing material supply part that the material injection rate can reduce surplus by setting, can reduce the dispersiveness on the intensity again, can realize economic ground improvement construction simultaneously.
Claims (3)
1, a kind of in the solidified-material injection management method of mechanical agitation type deep-mixing treatment construction, it is characterized in that, to the epimere side agitator that forms by upper outside agitator and upper inner agitator, constitute with the hypomere side agitator that forms by bottom outside agitator and lower inside agitator, and two positions of first discharge opening below giving the front end that is arranged at shaft and discharge opening curing material that spues through giving the outside left that is arranged at bottom outside agitator, aforementioned upper outside agitator and lower inside agitator are rotated towards positive direction, make the mechanical type agitator of aforementioned upper inner agitator and bottom outside agitator on the other hand, adopt to have one or the digging machine of the most axles solidified-material injection management method when carrying out deep-mixing treatment construction towards contrary direction rotation;
In advance, take the former domain data of ground improvement object domain according to pretesting, the former domain data based on gained determine per unit m
3Solidify the material injection rate, the ratio of the curing material amount that will be spued by aforementioned first discharge opening and second discharge opening to each domain kind is being set earlier;
When practice of construction, data when instrumentation comprises the improvement of the injection of agitator at least and/or pull rate, while is injection and/or pull rate data interlock therewith, by controlling by solidifying the rotation number of material, even make per unit m to also controlling the discharge-amount that solidifies material automatically under aforementioned injection and/or the pull rate generation change with grout pump
3Solidify the material injection rate and become fixing,, and carry out the control that this solidifies the material discharge-amount simultaneously according to from first discharge opening and the curing material of second discharge opening ratio interlock that spues of each domain kind through giving prior setting.
2, a kind of in the solidified-material injection management method of mechanical agitation type deep-mixing treatment construction, it is characterized in that, to the epimere side agitator that forms by upper outside agitator and upper outside agitator, constitute with the hypomere side agitator that forms by bottom outside agitator and lower inside agitator, and two positions of first discharge opening below giving the front end that is arranged at shaft and second discharge opening curing material that spues through giving the outside left that is arranged at bottom outside agitator, aforementioned upper outside agitator and lower inside agitator are rotated towards positive direction, make the mechanical type agitator of aforementioned upper inner agitator and bottom outside agitator on the other hand, adopt to have one or the digging machine of the most axles solidified-material injection management method when carrying out deep layer mixed processing lathe turner towards contrary direction rotation;
In advance, take the former domain data of ground improvement object domain, each domain kind is determined per unit m based on the former domain data of gained according to investigation in advance
3Solidify the material injection rate, will set by the ratio of the curing material amount of aforementioned first discharge opening and second discharge opening each domain kind earlier simultaneously;
When practice of construction, data when instrumentation comprises the improvement that pass through and/or pull rate of agitator at least, pass through therewith and/or pull rate data interlock simultaneously, by controlling by solidifying the rotation number of material, even make per unit m to also controlling the discharge-amount that solidifies material automatically under aforementioned injection and/or the pull rate generation change with grout pump
3Solidify the material injection rate and become fixing, simultaneously according to from first discharge opening and the curing material of second discharge opening the spue ratio and carry out control that this solidify material discharge-amount of each domain kind through giving prior setting.
3, as claimed in claim 1 or 2 in the solidified-material injection management method of mechanical agitation type deep-mixing treatment construction, it is characterized in that, it is the manufacturing that is cured material that utilizes continuous pugging mullering mixer continuous, the amount of concrete and the water that utilize load cell to monitor this continuous pugging mullering mixer measure, utilize the curing material density system of continuous mixer manufacturing to utilize the line upper density meter sampling instrumentation that is arranged in the pipe, utilize to set cooperate and the comparison of the actual cooperation of instrumentation, so that any one of the input amount of aforementioned amount of concrete and water revised.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP334562/1998 | 1998-11-25 | ||
| JP10334562A JP2000160548A (en) | 1998-11-25 | 1998-11-25 | Solidifying material injection control method in mechanically agitating deep layer mixing processing work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1260423A true CN1260423A (en) | 2000-07-19 |
Family
ID=18278799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99111684 Pending CN1260423A (en) | 1998-11-25 | 1999-08-23 | Solidified-material injection management method used in mechanical-agitating type deep-mixing treatment construction |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2000160548A (en) |
| CN (1) | CN1260423A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003166237A (en) * | 2001-11-30 | 2003-06-13 | Tone Geo Tech Co Ltd | Drilling, mixing and agitating blade of soil improvement machine |
| JP2004027492A (en) * | 2002-06-21 | 2004-01-29 | Morihide Hashimoto | Foundation improvement device |
| JP4098575B2 (en) * | 2002-07-16 | 2008-06-11 | 株式会社熊谷組 | Formulation management method of soil mortar |
| JP3750066B1 (en) * | 2005-05-31 | 2006-03-01 | 清水建設株式会社 | Ground improvement method |
| JP4473300B2 (en) * | 2007-10-25 | 2010-06-02 | 利夫 福田 | Deterioration reducing method and deterioration reducing material of cement-based mixed treatment improved body |
| KR100870722B1 (en) | 2008-08-29 | 2008-11-27 | 주식회사 동아지질 | Deep cement mixing device for sea construction and construction work method using therewith |
| KR20180079753A (en) * | 2017-01-02 | 2018-07-11 | 주식회사 동아지질 | Deep cement mixing device for sea construction and construction work method of slurry |
| JP6847017B2 (en) * | 2017-11-02 | 2021-03-24 | りんかい日産建設株式会社 | Cement slurry quality control system |
| JP7008383B1 (en) | 2021-11-05 | 2022-01-25 | 株式会社加藤建設 | Ground improvement method |
-
1998
- 1998-11-25 JP JP10334562A patent/JP2000160548A/en not_active Ceased
-
1999
- 1999-08-23 CN CN 99111684 patent/CN1260423A/en active Pending
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|---|---|
| JP2000160548A (en) | 2000-06-13 |
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