CN105155510A - Method capable of carrying out microorganism solidifying and crusting on super soft foundation surface and matching device - Google Patents
Method capable of carrying out microorganism solidifying and crusting on super soft foundation surface and matching device Download PDFInfo
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Abstract
The invention discloses a method capable of carrying out microorganism solidifying and crusting on a super soft foundation surface and a matching device. The method comprises the steps that firstly, a temporary work platform with bearing force is laid on the super soft foundation surface, and a medium-coarse sand reinforcement cushion layer is laid on the temporary work platform; secondly, a microorganism grouting and spraying system is arranged on the surface of the medium-coarse sand reinforcement cushion layer; thirdly, pure bacterium liquid is sprayed to the surface of the medium-coarse sand reinforcement cushion layer firstly through the microorganism grouting and spraying system, then, a mixed bacterium liquid doped with a salt solution is sprayed immediately, and after the bacterium liquid is sprayed, standing is carried out for 6 hours to 8 hours; and fourthly, consolidating liquid is sprayed to the surface of the medium-coarse sand reinforcement cushion layer through the microorganism grouting and spraying system, and the medium-coarse sand reinforcement cushion layer is solidified and crusted to form a duricrust layer. The duricrust layer formed through solidifying can meet the work requirements of various large construction machines, and the mechanization construction degree is improved; and meanwhile, the duricrust layer can serve as a water draining cushion layer of a blow fill foundation, the construction period can be obviously shortened, the use number of gravel materials is reduced, and the bearing force of the blow fill foundation can be improved.
Description
Technical field
The invention belongs to the foundation treatment technology field of civil engineering, harbour or the aspect such as waterway engineering and hydraulic engineering, relate to a kind of microorganism solidification crust method and corollary apparatus, particularly relate to a kind of microorganism carried out on ultra-soft foundation surface and solidify crust method and corollary apparatus.
Background technology
The economic develop rapidly in coastal cities, population is expanded rapidly, and coastal cities are day by day urgent to the demand in soil.In order to solve the situation of " having a large population and a few land ", a lot of coastal cities start extensive reclaiming land around sea.Reclaiming land around sea is that blowing-filling sludge forms certain thickness ultra-soft reclaimed ground on original state weak soil, this ultra-soft hydraulic fill foundation water content is high, bearing capacity is extremely low, cannot directly construct sand mat of subgrade, execute slotting plastic draining board etc. and carry out discharging consolidation process to ultra-soft foundation.Traditional reclaimed ground processing method mainly comprises: after (1) ultra-soft foundation hydraulic reclamation completes, by its natural drying 1 ~ 2 year, the soft foundation of some strength is attached to by natural evaporation, deadweight, carry out again afterwards executing slotting vertical plastic draining board, arranging that horizontal drainage system etc. carries out vacuumizing precompressed, carry out discharging consolidation process; (2) lay the material such as muscle basketry, bamboo basketry of several layers to improve bearing capacity of foundation soil on ultra-soft foundation surface, then fill certain thickness sandstone material as follow-up and carry out the bearing stratum that slotting vertical plastic draining board executed by machinery; (3) pass through manually direct slotting vertical plastic draining board, the layout horizontal drainage system etc. executed on ultra-soft and carry out vacuumizing precompressed etc., after ultra-soft hydraulic fill foundation top layer is solidify to form crust layer, then adopt machinery to execute slotting band drain solidification deep layer hydraulic fill foundation.
Mainly there is following defect and deficiency in tradition reclaiming land around sea technique: the efficiency of construction of method (1) is extremely low, and the construction period is very long; Method (2) employs a large amount of sandstone materials, construction cost is high, cause serious waste of resources and cannot crust layer be formed, Construction practices shows that the consolidation effect of the method is poor, the crowded silt phenomenon that easy appearance is serious, construction risk is high, ground non-uniform phenomenon after process is serious, settlement after construction and relative settlement large; Method (3) in most instances construction machinery cannot enter hydraulic reclamation region, making and the installing of plastic draining board of the carrying drainage blanket needed for later stage basement process almost place one's entire reliance upon manually, fall into half meter of scene of having difficulty in taking a step in " swamp land " visible at any time, speed of application is slow, almost mechanicalization can be sayed, efficiency of construction is low and difficulty is large.
Summary of the invention
The object of the present invention is to provide a kind of in ultra-soft foundation surface microorganism solidification crust method and complete set technology, form at ultra-soft foundation surface rapid curing the crust layer possessed compared with high-bearing capacity by microorganism curing technology, and then executing slotting vertical plastic draining board for carrying out machinery, vacuumizing piling prepressing etc. favourable conditions is provided, the method greatly can shorten the construction period, reduce sandstone material consumption, and effectively improve bearing capacity of foundation soil.
For achieving the above object, present invention employs following technical scheme:
A microorganism solidification crust method of carrying out on ultra-soft foundation surface, is characterized in that: said method comprising the steps of:
1) lay on ultra-soft foundation surface the one-shot job platform possessing bearing capacity, and on one-shot job platform, lay the thick medium coarse sand reinforcement cushion of 0.5-0.8m; Described one-shot job platform comprises the first non-woven geotextile be laid on successively from the bottom to top on ultra-soft foundation surface, bamboo basketry, three-dimensional geogrid and the second non-woven geotextile;
2) microorganism grouting spray system is arranged on the medium coarse sand reinforcement cushion surface on one-shot job platform; Described microorganism grouting spray system comprises the horizontal shower pipe being laid on medium coarse sand reinforcement cushion surface and the spray pressure system be connected with horizontal shower pipe;
3) first spray pure bacterium liquid by microorganism grouting spray system on medium coarse sand reinforcement cushion surface, spray is mixed with the mixed bacteria liquid of salting liquid at once afterwards, leaves standstill 6-8 hour after bacterium liquid spray; Described pure bacterium liquid is at NH
4the Bacillus pasteurii liquid of other materials is not added after having cultivated in-YE fluid nutrient medium; Described NH
4in-YE fluid nutrient medium, each constituent content is as follows: the yeast extract of 20g/L, (the NH of 10g/L
4)
2sO
4, the Tris buffer solution of 0.13mol/L; Described NH
4the pH=9.0 of-YE fluid nutrient medium; The described mixed bacteria liquid being mixed with salting liquid is in Bacillus pasteurii liquid, mix the bacterium liquid that concentration is 0.5mol/L calcium chloride solution; The volume of described calcium chloride solution be pure bacterial liquid long-pending 1/10;
4) be in the milk spray system at medium coarse sand reinforcement cushion surface spraying consolidating fluid by microorganism, medium coarse sand reinforcement cushion solidification crust is formed crust layer; Described consolidating fluid is mol ratio is the urea of 1:1 and the mixed liquor of calcium chloride; The concentration of described consolidating fluid is 0.5mol/L.
As preferably, in medium coarse sand reinforcement cushion of the present invention, equidistantly arrange 1-2 layers of reinforcement material along bed course short transverse; Described muscle material is direction earthwork grille or three-dimensional geogrid; The tensile strength when elongation rate of described muscle material is 0.5% is not less than 150kN/m.
As preferably, the Spraying rates of pure bacterium liquid of the present invention and the mixed bacteria liquid that is mixed with salting liquid is all 5ml/min; Described pure bacterium liquid and the spray time of mixed bacteria liquid being mixed with salting liquid are all uninterrupted 2-3 hour of spray continuously; The Spraying rates of described consolidating fluid is 10ml/min; The spray time of described consolidating fluid is the uninterrupted 6-8 days of spray continuously; The crust layer undrained shear strength that described solidification crust is formed is not less than 500kPa.
As preferably, microorganism solidification crust method of carrying out on ultra-soft foundation surface of the present invention is in step 4) after also comprise:
5) in step 4) crust layer that formed adopts board-plugging device to retreat execute slotting vertical plastic draining board, and lay horizontal drain pipe in crust layer surface grooving, horizontal drain pipe is connected with vertical plastic draining board wrench and forms vertically-horizontal drainage system;
6) on horizontal drain pipe, lay non-woven fabrics and sealing film successively from bottom to top, and vertical-horizontal drainage system is connected with pumped vacuum systems and carries out vacuumizing piling prepressing construct.
As preferably, step 5 of the present invention) specific implementation be:
5.1) directly in step 4) crust layer that formed adopts board-plugging device to retreat execute slotting vertical plastic draining board; The wrench of described vertical plastic draining board exposes to earth's surface;
5.2) in step 4) upper surface of crust layer that formed lays horizontal drain pipe; Described horizontal drain pipe is arranged between the vertical plastic draining board of adjacent two row and interval and arranges;
5.3) wrench of the vertical plastic draining board exposing to earth's surface is rolled up on the outer wall of horizontal drain pipe, with wrench and the horizontal drain pipe junction of the vertical plastic draining board of parcel non-woven wraps.
As preferably, microorganism grouting spray system of stating of the present invention comprises spray pressure system, spray tube connector and horizontal shower pipe; Described spray pressure system is connected by spray tube connector and horizontal shower pipe; Described horizontal shower pipe is provided with one or more nozzle installing hole; Hydrodynamic(al) swivel nozzle is provided with in described nozzle installing hole.
As preferably, horizontal shower pipe of the present invention is one or more; When described horizontal shower pipe is many, described microorganism grouting spray system also comprises the shower tee junction be arranged on spray tube connector; Described spray tube connector is connected by shower tee junction and many horizontal shower pipe.
As preferably, when horizontal shower pipe of the present invention is many, the interval of many horizontal shower pipe is not more than 2m.
As preferably, vertically of the present invention-horizontal drainage system comprises pumped vacuum systems, drainage connecting pipe, horizontal plastic drain-pipe and vertical plastic draining board; One end of described vertical plastic draining board is inserted through in the rear crust layer formed of microorganism solidification, and the other end exposes to earth's surface; One end that described vertical plastic draining board exposes to earth's surface is rolled up on the outer wall of horizontal drain pipe; Described pumped vacuum systems is connected by drainage connecting pipe and horizontal plastic drain-pipe and vertical plastic draining board.
As preferably, vertically of the present invention-horizontal drainage system be also included in vertical plastic draining board and horizontal drain pipe junction parcel non-woven fabrics, be laid on upper strata non-woven fabrics on horizontal drain pipe and sealing film successively from bottom to top; Described vertical plastic draining board is polylith; The vertical plastic draining slab integral of described polylith is quincuncial arrangement, and the distance between adjacent vertical plastic draining board is not more than about 1m; The distance that described vertical plastic draining board exposes to earth's surface is between 30-40cm.
Technical scheme of the present invention compared with prior art, has following outstanding advantages:
(1) utilize microorganism curing technology that medium coarse sand reinforcement cushion rapid curing is formed crust layer, solve a difficult problem for ultra-soft barged-in fill top layer solidification crust, for follow-up horizontal vertical builds to drainage system, carries out vacuumizing piling prepressing construction etc. and provide working platform; (2) microorganism solidification medium coarse sand reinforcement cushion can be constructed after ultra-soft reclaimed ground hydraulic reclamation completes, and only need medium coarse sand reinforcement cushion solidification crust can be formed the crust layer meeting load bearing requirements the 6-8 days length of time, substantially reduce the construction period; (3) medium coarse sand reinforcement cushion solidifies the crust layer formed afterwards for 6 days, and its undrained shear strength is not less than 500kPa, can bear larger external loads, can meet all kinds of large-scale construction equipment operation, and then significantly improves mechanized construction degree; (4) laid the high-strength earth work grille of 1-2 layer in medium coarse sand reinforcement cushion, by microorganism solidification, medium coarse sand and muscle material have been solidified in aggregates, can further improve shear strength and the globality of crust layer; (5) medium coarse sand reinforcement cushion is thick only needs 0.5-0.8m, greatly reduces the sand cushion thickness adopted in original technology; (6) crust layer that medium coarse sand reinforcement cushion solidify to form still has larger porosity, still can be used as the drainage blanket of hydraulic fill foundation; (7), in the construction of medium coarse sand reinforcement cushion, only need to carry out flattening and do not need to carry out any mechanical ramming and can carry out microorganism solidification construction, construction technology simple possible is easy to operate.
Accompanying drawing explanation
Fig. 1 is the generalized section of ultra-soft foundation surface microorganism disclosed in this invention solidification crust method corollary apparatus used;
Fig. 2 is the layout schematic diagram of sand cushion surface microorganism whitewashing spray system;
Fig. 3 is the layout schematic diagram of vertical-horizontal drainage system;
Description of reference numerals is as follows:
1-original state soft foundation; 2-ultra-soft reclaimed ground; 3-temporary working platform; 4-crust layer; 5-muscle material; 6-horizontal drain pipe; The vertical plastic draining board of 7-; 8-non-woven fabrics; 9-sealing film; 10-horizontal shower pipe; 11-nozzle installing hole; 12-hydrodynamic(al) swivel nozzle; 13-shower tee junction; 14-sprays tube connector; 15-spray pressure system; 16-Y-junction of drainpipe joint; 17-drainage connecting pipe; 18-pumped vacuum systems.
Detailed description of the invention
Below in conjunction with content shown in accompanying drawing 1, Fig. 2 and Fig. 3 and the following specific embodiment recorded, construction method of the present invention and corollary apparatus are described in further details:
Embodiment 1:
Be below the construction sequence of this technology:
Step 1: see Fig. 1, hydraulic reclamation ultra-soft reclaimed ground 2 also constructs temporary working platform 3.Build cofferdam and enclosing and cultivating on the original state soft foundation 1 in region, adopt traditional hydraulic reclamation method hydraulic reclamation ultra-soft reclaimed ground 2.Afterwards, on ultra-soft reclaimed ground 2, lay non-woven geotextile, bamboo basketry, three-dimensional geogrid and non-woven geotextile from the bottom to top successively, to construct the temporary working platform 3 possessing certain bearing capacity.
Step 2: lay medium coarse sand reinforcement cushion and construct spray system.Adopt artificial or mechanical means, temporary working platform is laid the medium coarse sand reinforcement cushion that 0.5-0.8m is thick, medium coarse sand divides 3 layers of laying, front 2 layers of medium coarse sand have been laid and after flattening, 1 layer of three-dimensional geogrid (when elongation rate is 0.5%, tensile strength is 160kN/m) is laid, to construct medium coarse sand reinforcement cushion in medium coarse sand mat surface.Afterwards, medium coarse sand reinforcement cushion constructs spray system, as shown in Figure 2, microorganism for carrying out on ultra-soft foundation surface solidifies the microorganism grouting spray system used in crust method, and microorganism grouting spray system comprises spray pressure system, spray tube connector and horizontal shower pipe; Spray pressure system is connected by spray tube connector and horizontal shower pipe; Horizontal shower pipe is provided with one or more nozzle installing hole 11; Hydrodynamic(al) swivel nozzle 12 is provided with in nozzle installing hole 11.Horizontal shower pipe 10 is one or more; When horizontal shower pipe 10 is many, microorganism grouting spray system also comprises the shower tee junction 13 be arranged on spray tube connector 14; Spray tube connector 14 is connected by shower tee junction 13 and many horizontal shower pipe 10.Horizontal shower pipe 10 presses the spaced and parallel layout of 2.0m, and each horizontal shower pipe 10 is connected with spray pressure system 15 with spray tube connector 14 by shower tee junction 13.
Step 3: implement microorganism grouting, solidification crust forms crust layer 4.First, by spray system by the Bacillus pasteurii liquid (i.e. pure bacterium liquid) after having cultivated, with the speed of 5ml/min on medium coarse sand reinforcement cushion surface uninterrupted spray continuously 2 hours; Then, the bacterium liquid (i.e. mixed bacteria liquid) of concentration 0.5mol/L calcium chloride solution is mixed in pure bacterium liquid, the volume of the calcium chloride solution mixed be pure bacterial liquid long-pending 1/10, and by spray system by mixed bacteria liquid with the speed of 5ml/min, uninterrupted spray is continuously on medium coarse sand reinforcement cushion surface, spray time is 3 hours, and bacterium liquid has sprayed rear standing 6-8 hour; Finally, by spray system by consolidating fluid (urea and calcium chloride concentration are the mixed liquor of 0.5mol/L), uninterrupted spray continuously, on medium coarse sand reinforcement cushion surface, sprays 4-6 days solidification crust and forms crust layer 4.
Step 4: construct horizontal vertical to drainage system.As shown in Figure 3, select suitable board-plugging device, directly retreat on crust layer 4 and execute slotting vertical plastic draining board 7 and grooving laying horizontal drain pipe 6.Wherein, vertical plastic draining board 7 is in quincuncial arrangement, and the distance controlling between adjacent vertical plastic draining board 7 is at about 1m; The wrench of vertical plastic draining board 7 exposes to earth's surface 30-40cm; Horizontal drain pipe 6 is arranged between the vertical plastic draining board 7 of adjacent two row, and interval is arranged, vertical plastic draining board 7 correspondence of two row lays a horizontal drain pipe 6.Then, horizontal drain pipe 6 laid one deck upper strata non-woven fabrics 8 and lay sealing film 9.Vertical plastic draining board 7 wrench spilt in one end, earth's surface rolls up the outer wall in horizontal drain pipe 6, then wraps up wrench and horizontal drain pipe 6 junction of the vertical plastic draining board 7 of non-woven wraps with one deck, and bundlees with band.
Step 5: carry out vacuum preloading construction.As shown in Figure 3, adopt Y-junction of drainpipe joint 16 to be connected with pumped vacuum systems 18 to drainage system by horizontal vertical with drainage connecting pipe 17, carry out afterwards vacuumizing precompressed.
Embodiment 2:
After embodiment 1 completing steps 1 ~ step 4, carry out piling prepressing construction.
After adopting Y-junction of drainpipe joint 16 and drainage connecting pipe 17 that horizontal vertical is connected to horizontal drainage supervisor to drainage system, horizontal drain pipe 6 re-lays layer of non-woven fabric, carries out layering piling prepressing afterwards.
Embodiment 3:
After embodiment 1 completing steps 1 ~ step 4, carry out combined vacuum and surcharge preloading construction.
First carry out vacuumizing precompressed 10 days, then on diaphragm seal, lay layer of non-woven fabric, and carry out layering piling prepressing.
Claims (10)
1. a microorganism solidification crust method of carrying out on ultra-soft foundation surface, is characterized in that: said method comprising the steps of:
1) lay on ultra-soft foundation surface the one-shot job platform possessing bearing capacity, and on one-shot job platform, lay the thick medium coarse sand reinforcement cushion of 0.5-0.8m; Described one-shot job platform comprises the first non-woven geotextile be laid on successively from the bottom to top on ultra-soft foundation surface, bamboo basketry, three-dimensional geogrid and the second non-woven geotextile;
2) microorganism grouting spray system is arranged on the medium coarse sand reinforcement cushion surface on one-shot job platform; Described microorganism grouting spray system comprises the horizontal shower pipe being laid on medium coarse sand reinforcement cushion surface and the spray pressure system be connected with horizontal shower pipe;
3) first spray pure bacterium liquid by microorganism grouting spray system on medium coarse sand reinforcement cushion surface, spray is mixed with the mixed bacteria liquid of salting liquid at once afterwards, leaves standstill 6-8 hour after bacterium liquid spray; Described pure bacterium liquid is at NH
4the Bacillus pasteurii liquid of other materials is not added after having cultivated in-YE fluid nutrient medium; Described NH
4in-YE fluid nutrient medium, each constituent content is as follows: the yeast extract of 20g/L, (the NH of 10g/L
4)
2sO
4, the Tris buffer solution of 0.13mol/L; Described NH
4the pH=9.0 of-YE fluid nutrient medium; The described mixed bacteria liquid being mixed with salting liquid is in Bacillus pasteurii liquid, mix the bacterium liquid that concentration is 0.5mol/L calcium chloride solution; The volume of described calcium chloride solution be pure bacterial liquid long-pending 1/10;
4) be in the milk spray system at medium coarse sand reinforcement cushion surface spraying consolidating fluid by microorganism, medium coarse sand reinforcement cushion solidification crust is formed crust layer; Described consolidating fluid is mol ratio is the urea of 1:1 and the mixed liquor of calcium chloride; The concentration of described consolidating fluid is 0.5mol/L.
2. microorganism solidification crust method of carrying out on ultra-soft foundation surface according to claim 1, is characterized in that: equidistantly arrange 1-2 layers of reinforcement material along bed course short transverse in described medium coarse sand reinforcement cushion; Described muscle material is direction earthwork grille or three-dimensional geogrid; The tensile strength when elongation rate of described muscle material is 0.5% is not less than 150kN/m.
3. microorganism solidification crust method of carrying out on ultra-soft foundation surface according to claim 2, is characterized in that: the Spraying rates of described pure bacterium liquid and the mixed bacteria liquid that is mixed with salting liquid is all 5ml/min; Described pure bacterium liquid and the spray time of mixed bacteria liquid being mixed with salting liquid are all uninterrupted 2-3 hour of spray continuously; The Spraying rates of described consolidating fluid is 10ml/min; The spray time of described consolidating fluid is the uninterrupted 6-8 days of spray continuously; The crust layer undrained shear strength that described solidification crust is formed is not less than 500kPa.
4. the microorganism solidification crust method of carrying out on ultra-soft foundation surface according to claim 1 or 2 or 3, is characterized in that: described microorganism solidification crust method of carrying out on ultra-soft foundation surface also comprises after step 4):
5) crust layer formed in step 4) adopts board-plugging device retreat and execute slotting vertical plastic draining board, and lay horizontal drain pipe in crust layer surface grooving, horizontal drain pipe is connected with vertical plastic draining board wrench and forms vertically-horizontal drainage system;
6) on horizontal drain pipe, lay non-woven fabrics and sealing film successively from bottom to top, and vertical-horizontal drainage system is connected with pumped vacuum systems and carries out vacuumizing piling prepressing construct.
5. microorganism solidification crust method of carrying out on ultra-soft foundation surface according to claim 4, is characterized in that: the specific implementation of described step 5) is:
5.1) crust layer directly formed in step 4) adopts board-plugging device to retreat and executes slotting vertical plastic draining board; The wrench of described vertical plastic draining board exposes to earth's surface;
5.2) upper surface of the crust layer formed in step 4) lays horizontal drain pipe; Described horizontal drain pipe is arranged between the vertical plastic draining board of adjacent two row and interval and arranges;
5.3) wrench of the vertical plastic draining board exposing to earth's surface is rolled up on the outer wall of horizontal drain pipe, with wrench and the horizontal drain pipe junction of the vertical plastic draining board of parcel non-woven wraps.
6. the microorganism for carrying out on ultra-soft foundation surface solidifies the microorganism grouting spray system used in crust method, it is characterized in that: described microorganism grouting spray system comprises spray pressure system, spray tube connector and horizontal shower pipe; Described spray pressure system is connected by spray tube connector and horizontal shower pipe; Described horizontal shower pipe is provided with one or more nozzle installing hole; Hydrodynamic(al) swivel nozzle is provided with in described nozzle installing hole.
7. the microorganism grouting spray system used in the microorganism solidification crust method for carrying out on ultra-soft foundation surface according to claim 6, is characterized in that: described horizontal shower pipe is one or more; When described horizontal shower pipe is many, described microorganism grouting spray system also comprises the shower tee junction be arranged on spray tube connector; Described spray tube connector is connected by shower tee junction and many horizontal shower pipe.
8. the microorganism grouting spray system used in the microorganism solidification crust method for carrying out on ultra-soft foundation surface according to claim 6, it is characterized in that: when described horizontal shower pipe is many, the interval of many horizontal shower pipe is not more than 2m.
9. for use in the microorganism solidification crust method of carrying out on ultra-soft foundation surface vertical-a horizontal drainage system, it is characterized in that: vertically described-horizontal drainage system comprises pumped vacuum systems, drainage connecting pipe, horizontal plastic drain-pipe and vertical plastic draining board; One end of described vertical plastic draining board is inserted through in the rear crust layer formed of microorganism solidification, and the other end exposes to earth's surface; One end that described vertical plastic draining board exposes to earth's surface is rolled up on the outer wall of horizontal drain pipe; Described pumped vacuum systems is connected by drainage connecting pipe and horizontal plastic drain-pipe and vertical plastic draining board.
10. use in the microorganism solidification crust method for carrying out on ultra-soft foundation surface according to claim 9 vertical-horizontal drainage system, it is characterized in that: vertically described-horizontal drainage system be also included in vertical plastic draining board and horizontal drain pipe junction parcel non-woven fabrics, be laid on upper strata non-woven fabrics on horizontal drain pipe and sealing film successively from bottom to top; Described vertical plastic draining board is polylith; The vertical plastic draining slab integral of described polylith is quincuncial arrangement, and the distance between adjacent vertical plastic draining board is not more than about 1m; The distance that described vertical plastic draining board exposes to earth's surface is between 30-40cm.
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| CN105806688A (en) * | 2016-03-28 | 2016-07-27 | 重庆工业职业技术学院 | Manufacturing method of biological soil fixation test beam used for constructional engineering |
| CN105806688B (en) * | 2016-03-28 | 2018-05-25 | 重庆工业职业技术学院 | The production method of the solid native test beam of biology used in architectural engineering |
| CN110770400A (en) * | 2017-05-30 | 2020-02-07 | 洛桑联邦理工学院 | Geotextile |
| CN110770400B (en) * | 2017-05-30 | 2021-11-12 | 洛桑联邦理工学院 | Geotextile |
| CN107893412A (en) * | 2017-10-25 | 2018-04-10 | 河海大学 | One kind is used for polynary microorganism mixing spray system and its application method in microorganism reinforcing engineering |
| CN109736291A (en) * | 2018-12-24 | 2019-05-10 | 华中科技大学 | One kind owing consolidation and blows on the base of alluvial plain that biological cement is reinforcing road bed and its construction method |
| CN109736291B (en) * | 2018-12-24 | 2024-06-14 | 华中科技大学 | Biological cement reinforced roadbed on under-consolidated and dredged foundation and construction method thereof |
| CN110080204A (en) * | 2019-04-08 | 2019-08-02 | 河海大学 | A kind of waste soil original position filler cloth mixing apparatus and construction method |
| CN110015824A (en) * | 2019-04-11 | 2019-07-16 | 江南大学 | A kind of soft clay microorganism curing agent, the application in soft clay solidifies and application method |
| CN111441337A (en) * | 2020-04-30 | 2020-07-24 | 华中科技大学 | Microorganism induced mineralization reinforcement soil body grouting method introducing urease inhibitor |
| CN111441337B (en) * | 2020-04-30 | 2022-03-18 | 华中科技大学 | Microorganism induced mineralization reinforcement soil body grouting method introducing urease inhibitor |
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