CN104674842A - Solidified soil retaining wall and construction method thereof - Google Patents
Solidified soil retaining wall and construction method thereof Download PDFInfo
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- CN104674842A CN104674842A CN201510078768.5A CN201510078768A CN104674842A CN 104674842 A CN104674842 A CN 104674842A CN 201510078768 A CN201510078768 A CN 201510078768A CN 104674842 A CN104674842 A CN 104674842A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a solidified soil retaining wall and a construction method thereof. The solidified soil retaining wall is applied to support of side slopes. The method comprises the following steps: S01, lofting and treating a foundation trench: setting the long edge, wide edge and height lengths of the foundation trench, determining a foundation trench excavation sideline according to the practical lengths of the long edge and wide edge of the preset foundation trench, and lofting; S02, excavating the foundation trench: performing side slope excavation according to the excavation sideline and the foundation trench height after lofting to obtain original site soil, and leveling and rolling the bottom of the foundation trench, wherein one side close to the side slope is subjected to excavation according to a preset inclination angle; S03, stirring a solidified soil mixture: uniformly stirring the original site soil, cement and a curing agent solution according to a set mixture ratio to obtain the solidified soil mixture; S04, paving a wall body and refilling plain soil; S05, curing the wall body. By adopting the scheme, materials can be obtained from local sources, and the construction cost is reduced; the construction period can be shortened; energy is saved, and environmental friendliness is facilitated, furthermore the comprehensive performance of the wall body can be enhanced.
Description
Technical field
The present invention relates to the slope retaining technology in geotechnical engineering field, particularly relate to a kind of solidified earth barricade and construction method thereof.
Background technology
Retaining wall refers to supporting Roadbed Soil or the hillside soil body, prevent from banketing or the structure of soil deformation unstability.Traditional retaining wall pattern has gravity, cantilevered, buttress type and reinforced earth bulkhead etc., gravity retaining wall, refers to the retaining wall relying on wall body deadweight opposing soil body lateral pressure.Gravity retaining wall available block stone, slabstone, concrete precast block as masonry, or adopt sheet stone concrete, concrete carries out monobloc cast.Cantilever retaining wall is made up of base plate and the stalk be fixed on base plate, main by the weight of banketing on base plate to maintain stable retaining wall, primarily of wall, toe board and heel slab three reinforced concrete members compositions.Counterfort retaining wall refers to the armstand along cantilever retaining wall, adds one counterfort at a certain distance, by the retaining wall that wall and heel slab couple together.The reinforced earth that reinforced earth retaining wall refers to by banketing, drawstring and veneer building block form bears the retaining wall of soil body lateral pressure.The wall body of above-mentioned retaining wall is built by laying bricks or stones by Reinforced Concrete Materials mostly.Need to carry out a large amount of soil excavation and backfilling working in retaining wall work progress, construction cost is large.
Soil-solidified-agent is a kind of novel energy-saving environment-friendly engineering material for solidifying all kinds of soil synthesized by multiple inorganic, organic material.The essence of soil-solidified-agent curing soil is, between soil particle, physical-chemical reaction occurs, and improves the contact surface between soil particle, the intergranular bindiny mechanism of reinforced soil.Its physical-chemical reaction can be summarized as curing compound and soil constituent carries out ionic adsorption and exchange, soil particle is made to be tending towards cohesion, chemical reaction generates the connection between novel substance reinforcement soil particle, and product volume expansion improves the hole also between filling soil particle.Under the effect of Compaction Effort, make solidified earth be easy to compacting and stablize, thus form overall structure, and reach conventional inaccessiable degree of consolidation.Through the soil of soil-solidified-agent process, the performances such as its intensity, compactness, the modulus of resilience are obtained for very large raising, thus extend the application life of engineering, save maintenance of works cost.
Soil-solidified-agent has mineral-type, ionic species, high score subclass and biology enzyme etc. dissimilar, and the development of current domestic soil-solidified-agent mainly concentrates on mineral-type curing compound aspect.Soil-solidified-agent can substitute the traditional building materials such as a large amount of lime, cement, flyash, rubble, gravel, saving resource, the energy, Economization on land, and protection vegetation, is conducive to ecological environmental protection, has good economy, environmental benefit.Cementitious material more insoluble specific questions when soil fixation such as cement, lime, flyash can also be solved, there is unique soil solidification effect and practicality widely, in the middle of the basic unit being widely used in highway and the engineering construction such as subbase, water conservancy bank protection.
In view of this, be necessary to be further improved in conjunction with the construction of soil stabilization to existing native barricade.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of solidified earth barricade and construction method thereof, can gather materials on the spot, and reduces construction costs; Can the construction period be shortened, energy-conserving and environment-protective, and the combination property of body of wall can be improved.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: the construction method providing a kind of solidified earth barricade, it is applied to the supporting of side slope, comprises the steps:
S01, foundation trench setting-out process, set the long limit of foundation trench, broadside and height x length, and according to the long limit of foundation trench of presetting and the physical length determination foundation trench excavating sideline of broadside, and setting-out is carried out to excavating sideline;
The process of S02, foundation trench excavation, carries out slope excavation according to the excavating sideline after setting-out and foundation trench height and obtains same court soil, and flattens and spreading process the complete foundation trench bottom land of excavation, wherein, excavates according to predetermined inclination angle near the side of side slope;
S03, the process of mixing solidified earth compound, obtain solidified earth compound by same court soil, cement and curing agent solution according to the proportioning uniform mixing of setting;
S04, wall body making and plain earthen backfill process, the process of described wall body making specifically comprises, a, be divided into according to the height of foundation trench the bottom that paves, pave middle level and the top layer that paves; B, by the solidified earth compound of uniform mixing lay to the bottom that paves until carry out spreading process after supporting side slope; C, bottom arranges the laying sideline in middle level of paving make to leave fill area between wall body and side slope paving, and successively lay solidified earth compound and form the solidified earth mixing bed of material laggard row spreading process; D, the solidified earth compound of uniform mixing is laid to paving top layer cover the top of fill area until carry out spreading process after supporting side slope;
Described plain earthen backfill process carries out synchronous spreading with " solidified earth compound is laid in the middle level layering that paves " synchronous successively laying of step c in the process of wall body making to fill area;
S05, maintenance process is carried out to wall body.
In order to solve the problems of the technologies described above, another technical scheme that the present invention adopts is: provide a kind of solidified earth barricade, comprises the foundation trench arranged near side slope, is divided into solidified earth compound and lays district and fill area in described foundation trench;
Described solidified earth compound lays that district comprises the top layer that paves laid in turn up and down, pave middle level and the bottom that paves form wall body, multiple gutter is buried in the medium dip of described wall body underground, the water inlet of described gutter stretches into fill area, the delivery port of gutter is arranged to foundation trench bottom angled, and multiple gutter is arranged up and down; Side slope is supported in one end of the described bottom that paves; The described middle level that paves comprises the multiple layers of cured soil mixing bed of material, and the middle level that paves is reserved with fill area near one end of side slope; The described top layer paving that paves extends to fill area and supports side slope;
The back-filling in layers of described fill area be always or usually as specified soil formed multilayer element soil layer, in described plain soil layer, any one deck is identical with the thickness that the corresponding solidified earth in the middle level that paves mixes the bed of material.
Beneficial effect of the present invention is: be different from the solidified earth Retaining wall time of the prior art long, be unfavorable for environmental protection, the problem that construction costs is high, the invention provides a kind of construction method of solidified earth barricade, mainly adopt the layering making calendering forming to wall body, be specifically divided into the bottom that paves, pave middle level and the top layer that paves, and to middle level and the synchronous spreading of plain earthen backfill of paving, construction period is short, and the solidified earth barricade wall body intensity after making is high, impervious, cracking resistance, good frost resistance; Mix curing compound in solidified earth compound, changed the character of soil by the ion exchange of self, this effect has irreversibility, and the solidified soil material of formation is not hydrophilic, weather resistance, plays a kind of permanent invigoration effect to soil.Curing compound is a kind of environment-friendly materials, all harmless to human body, livestock and plant etc., adopt solidified soil material can reduce exploitation and the carrying of raw-material discarded and new material, make the infringement of construction work to environment be reduced to minimum degree, preserve the ecological environment to greatest extent; In addition, the middle level that paves has good expansion.
Accompanying drawing explanation
Fig. 1 is the construction method flow chart of solidified earth barricade of the present invention;
Fig. 2 is wall body making flow chart of steps of the present invention;
Fig. 3 is the structure chart of an embodiment of solidified earth barricade of the present invention;
Fig. 4 is the cross section view of solidified earth reinforced retaining wall of the present invention;
Fig. 5 is the cross section view of band cross rib solidified earth barricade of the present invention;
Fig. 6 is the present invention's grid-like solidified earth barricade cross section view.
Label declaration:
1, foundation trench; 21, pave bottom; 22, pave middle level; 23, pave top layer;
3, plain soil layer; 4, packed sand; 5, side slope; 6, rib tape;
7, cross rib; 8, reserved lattice room; 221, the solidified earth mixing bed of material; 222, gutter.
Detailed description of the invention
By describing technology contents of the present invention in detail, realized object and effect, accompanying drawing is coordinated to be explained below in conjunction with embodiment.
The design of most critical of the present invention is: this programme mainly adopts wall body making and plain earthen backfill treatment step, specifically be divided into the bottom that paves, pave middle level and the top layer that paves, and to middle level and the synchronous spreading of plain earthen backfill of paving, construction period is short, solidified earth barricade wall body intensity after making is high, impervious, cracking resistance, good frost resistance; In solidified earth compound, mix curing compound, be conducive to environmental protection.
Please refer to Fig. 1 and Fig. 2, the construction method of a kind of solidified earth barricade of the present invention, it is applied to the supporting of side slope, comprises the steps:
S01, foundation trench setting-out process, set the long limit of foundation trench, broadside and height x length, and according to the long limit of foundation trench of presetting and the physical length determination foundation trench excavating sideline of broadside, and setting-out is carried out to excavating sideline;
The process of S02, foundation trench excavation, carries out slope excavation according to the excavating sideline after setting-out and foundation trench height and obtains same court soil, and flattens and spreading process the complete foundation trench bottom land of excavation, wherein, excavates according to predetermined inclination angle near the side of side slope;
S03, the process of mixing solidified earth compound, obtain solidified earth compound by same court soil, cement and curing agent solution according to the proportioning uniform mixing of setting;
S04, wall body making and plain earthen backfill process, the process of described wall body making specifically comprises, a, be divided into according to the height of foundation trench the bottom that paves, pave middle level and the top layer that paves; B, by the solidified earth compound of uniform mixing lay to the bottom that paves until carry out spreading process after supporting side slope; C, bottom arranges the laying sideline in middle level of paving make to leave fill area between wall body and side slope paving, and successively lay solidified earth compound and form the solidified earth mixing bed of material laggard row spreading process; D, the solidified earth compound of uniform mixing is laid to paving top layer cover the top of fill area until carry out spreading process after supporting side slope;
Described plain earthen backfill process carries out synchronous spreading with " solidified earth compound is laid in the middle level layering that paves " synchronous successively laying of step c in the process of wall body making to fill area;
S05, maintenance process is carried out to wall body.
From foregoing description, beneficial effect of the present invention is: be different from the solidified earth Retaining wall time of the prior art long, be unfavorable for environmental protection, the problem that construction costs is high, the invention provides a kind of construction method of solidified earth barricade, main employing is to the layering making calendering forming of wall body, specifically be divided into the bottom that paves, pave middle level and the top layer that paves, and to middle level and the synchronous spreading of element soil of paving, construction period is short, solidified earth barricade wall body intensity after making is high, impervious, cracking resistance, good frost resistance; Mix curing compound in solidified earth compound, changed the character of soil by the ion exchange of self, this effect has irreversibility, and the solidified soil material of formation is not hydrophilic, weather resistance, plays a kind of permanent invigoration effect to soil.Curing compound is a kind of environment-friendly materials, all harmless to human body, livestock and plant etc., adopt solidified soil material can reduce exploitation and the carrying of raw-material discarded and new material, make the infringement of construction work to environment be reduced to minimum degree, preserve the ecological environment to greatest extent; In addition, the middle level that paves has good expansion.
Further, be also included in the medium dip of wall body in the process of wall body making in described step S04 and bury multiple gutter underground, and make the water inlet of gutter stretch into fill area, the step that the delivery port of gutter is installed to foundation trench bottom angled.This gutter is for discharging the discharge of fill area internal water accumulation.
Further, also comprise successively filling bag sand loading soil in described step S04 before plain earthen backfill process, make packed sand near the laying sideline step with the solidified earth compound of layer.This packed sand can isolate element soil and solidified earth compound.
Further, the step that rib tape is successively set on the solidified earth mixing bed of material and plain soil layer of same layer is also comprised in described step S04 after plain earthen backfill process.Utilize the rubbing action of rib tape and rolling earth behind retaining wall, improve the engineering properties of rolling earth behind retaining wall, solidified earth barricade and reinforced earth combine, and improve barricade and prop up gear ability, increase slope stability.
Further, the middle level that paves in described step S04 comprises the solidified earth mixing bed of material and extends and lay process and form cross rib, and makes cross rib preset vertical distance every one to extend until lay to supporting side slope to fill area, and in cross rib the step of pre-buried rib tape.There is very large rubbing action between this cross rib and rolling earth behind retaining wall, the existence of cross rib adds barricade deadweight simultaneously, and this type barricade has a very strong gear ability, can be used for the retaining wall that design height is higher.
Further, pave in described step S04 and also comprise the step of at least one reserved lattice room in middle level.The spoir of same court excavation can be inserted in lattice room, increase barricade deadweight.This native barricade had both played a gear effect, realized again spoir to the full extent and utilized.
In sum, the construction method of solidified earth barricade provided by the invention, main employing is to the layering making calendering forming of wall body, specifically be divided into the bottom that paves, pave middle level and the top layer that paves, and to middle level and the synchronous spreading of element soil of paving, construction period is short, and the solidified earth barricade wall body intensity after making is high, impervious, cracking resistance, good frost resistance; In solidified earth compound, mix curing compound, changed the character of soil by the ion exchange of self, this effect has irreversibility, and the solidified soil material of formation is not hydrophilic, weather resistance, plays a kind of permanent invigoration effect to soil.Curing compound is a kind of environment-friendly materials, all harmless to human body, livestock and plant etc., adopt solidified soil material can reduce exploitation and the carrying of raw-material discarded and new material, make the infringement of construction work to environment be reduced to minimum degree, preserve the ecological environment to greatest extent; In addition, the middle level that paves has good expansion, can arrange rib tape, cross rib reinforced bands mechanism with qualifying cell structure, can improve intensity and the environmental-protecting performance of native barricade.
Embodiment one
Please refer to Fig. 3, a kind of solidified earth barricade of the present invention, comprises the foundation trench 1 arranged near side slope 5, is divided into solidified earth compound and lays district and fill area in described foundation trench 1;
Described solidified earth compound lays that district comprises the top layer 23 that paves laid in turn up and down, pave middle level 22 and the bottom 21 that paves form wall body, multiple gutter 222 is buried in the medium dip of described wall body underground, the water inlet of described gutter 222 stretches into fill area, the delivery port of gutter 222 is arranged to foundation trench 1 bottom angled, and multiple gutter about 222 is arranged; Side slope 5 is supported in described one end paving bottom 21; The described middle level 22 that paves comprises the multiple layers of cured soil mixing bed of material 221, and the middle level 22 that paves is reserved with fill area near one end of side slope 5; The described top layer 23 that paves spreads and to extend to fill area and to support side slope 5;
The back-filling in layers of described fill area be always or usually as specified soil formed multilayer element soil layer 3, in described plain soil layer 3, any one deck is identical with the thickness that the corresponding solidified earth in the middle level 22 that paves mixes the bed of material 221.The solidified earth that above-mentioned plain soil layer 3 is corresponding with the middle level 22 that paves mixes between the bed of material 221 and is also provided with packed sand 4, and the thickness of packed sand 4 is identical with the plain soil layer 3 of same layer and thickness, and the water inlet of gutter 222 is arranged in packed sand 4.
The construction of this solidified earth barricade can be gathered materials on the spot, and a large amount of minimizing concrete and steel use amount, reduce engineering cost greatly.Solidified earth can mix at the scene, and layering making roller-compaction, the construction period is short, and the solidified earth barricade wall body intensity after making is high, impervious, cracking resistance, good frost resistance.
Embodiment two
Consult Fig. 4, Fig. 4 is the cross section view of solidified earth reinforced retaining wall, and this solidified earth reinforced retaining wall is the improvement based on embodiment one, is specially, in the middle level 22 that paves any one solidified earth mixing the bed of material 221 and correspondence plain soil layer 3 on be equipped with rib tape 6.For the situation that barricade design height is higher, can imbed rib tape 6 in solidified earth barricade wall body paving process, rib tape 6 extends in rolling earth behind retaining wall.Utilize the rubbing action of rib tape 6 and rolling earth behind retaining wall, improve the engineering properties of rolling earth behind retaining wall, solidified earth barricade and reinforced earth combine, and improve barricade and prop up gear ability, increase side slope 5 stability.
Embodiment three
Consult Fig. 5, Fig. 5 is the cross section view of band cross rib 7 solidified earth barricade, this band cross rib 7 solidified earth barricade is the improvement based on embodiment two, concrete, the middle level 22 that paves also comprises cross rib 7, described cross rib 7 is preset vertical distance every one and is extended until lay to side slope 5 to fill area, and is embedded with rib tape 6 in cross rib 7.In solidified earth reinforced retaining wall wall body and rolling earth behind retaining wall layering decking and rolling process, every one section of vertical spacing, solidified earth paving operation is extended to rolling earth behind retaining wall layer, form cross rib 7.There is very large rubbing action between cross rib 7 and rolling earth behind retaining wall, the existence of cross rib 7 adds barricade deadweight simultaneously, and this type barricade has a very strong gear ability, can be used for the retaining wall that design height is higher.
Embodiment four
Consult Fig. 6, Fig. 6 is the sectional view of grid-like solidified earth barricade, this grid-like native barricade is on the basis of embodiment one, to paving, middle level 22 is further processed, be specially: also comprise at least one reserved lattice room 8 paving in middle level 22, the quantity of this reserved lattice room 8 and size can design according to the requirement of reality.For the situation that Earth Pressure of Retaining Wall is less, can solidified earth barricade making be rolled into grid-like, the spoir of same court excavation can be inserted in lattice room, increase barricade deadweight.This type barricade had both played a gear effect, realized again spoir to the full extent and utilized.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalents utilizing manual of the present invention and accompanying drawing content to do, or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a construction method for solidified earth barricade, it is applied to the supporting of side slope, it is characterized in that, comprises the steps:
S01, foundation trench setting-out process, set the long limit of foundation trench, broadside and height x length, and according to the long limit of foundation trench of presetting and the physical length determination foundation trench excavating sideline of broadside, and setting-out is carried out to excavating sideline;
The process of S02, foundation trench excavation, carries out slope excavation according to the excavating sideline after setting-out and foundation trench height and obtains same court soil, and flattens and spreading process the complete foundation trench bottom land of excavation, wherein, excavates according to predetermined inclination angle near the side of side slope;
S03, the process of mixing solidified earth compound, obtain solidified earth compound by same court soil, cement and curing agent solution according to the proportioning uniform mixing of setting;
S04, wall body making and plain earthen backfill process, the process of described wall body making specifically comprises, a, be divided into according to the height of foundation trench the bottom that paves, pave middle level and the top layer that paves; B, by the solidified earth compound of uniform mixing lay to the bottom that paves until carry out spreading process after supporting side slope; C, bottom arranges the laying sideline in middle level of paving make to leave fill area between wall body and side slope paving, and successively lay solidified earth compound and form the solidified earth mixing bed of material laggard row spreading process; D, the solidified earth compound of uniform mixing is laid to paving top layer cover the top of fill area until carry out spreading process after supporting side slope;
Described plain earthen backfill process carries out synchronous spreading with " solidified earth compound is laid in the middle level layering that paves " synchronous successively laying of step c in the process of wall body making to fill area;
S05, maintenance process is carried out to wall body.
2. the construction method of solidified earth barricade according to claim 1, it is characterized in that, also be included in the medium dip of wall body in the process of wall body making in described step S04 and bury multiple gutter underground, and make the water inlet of gutter stretch into fill area, the step that the delivery port of gutter is installed to foundation trench bottom angled.
3. the construction method of solidified earth barricade according to claim 1, is characterized in that, also comprises successively filling bag sand loading soil, make packed sand near the laying sideline step with the solidified earth compound of layer in described step S04 before plain earthen backfill process.
4. the construction method of solidified earth barricade according to claim 1, is characterized in that, also comprises the step successively arranging rib tape on the solidified earth mixing bed of material and plain soil layer of same layer in described step S04 after plain earthen backfill process.
5. the construction method of solidified earth barricade according to claim 4, it is characterized in that, pave in described step S04 middle level comprise solidified earth mixing the bed of material extend lay process formed cross rib, and make cross rib preset vertical distance every one to extend until lay to supporting side slope to fill area, and in cross rib the step of pre-buried rib tape.
6. the construction method of solidified earth barricade according to claim 4, is characterized in that, also comprises the step of at least one reserved lattice room in described step S04 in the middle level that paves.
7. application rights requires to it is characterized in that the solidified earth barricade that the construction method of solidified earth barricade described in any one of 1-6 obtains, and comprises the foundation trench arranged near side slope, is divided into solidified earth compound and lays district and fill area in described foundation trench;
Described solidified earth compound lays that district comprises the top layer that paves laid in turn up and down, pave middle level and the bottom that paves form wall body, multiple gutter is buried in the medium dip of described wall body underground, the water inlet of described gutter stretches into fill area, the delivery port of gutter is arranged to foundation trench bottom angled, and multiple gutter is arranged up and down; Side slope is supported in one end of the described bottom that paves; The described middle level that paves comprises the multiple layers of cured soil mixing bed of material, and the middle level that paves is reserved with fill area near one end of side slope; The described top layer paving that paves extends to fill area and supports side slope;
The back-filling in layers of described fill area be always or usually as specified soil formed multilayer element soil layer, in described plain soil layer, any one deck is identical with the thickness that the corresponding solidified earth in the middle level that paves mixes the bed of material.
8. solidified earth barricade according to claim 7, is characterized in that, described in pave any solidified earth mixing bed of material and correspondence in middle level plain soil layer on be equipped with rib tape.
9. solidified earth barricade according to claim 7, is characterized in that, described in the middle level that paves also comprise cross rib, described cross rib is preset vertical distance every one and is extended until lay to side slope to fill area, and is embedded with rib tape in cross rib.
10. solidified earth barricade according to claim 7, is characterized in that, described in pave in middle level and also comprise at least one reserved lattice room.
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Cited By (5)
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| CN106592565A (en) * | 2016-11-01 | 2017-04-26 | 西北农林科技大学 | Dam fixing and protecting construction method using soil stabilizer in land reclamation project |
| CN109610502A (en) * | 2018-12-11 | 2019-04-12 | 长沙理工大学 | A kind of construction method of dark formula Modified soil long and short anchor arm |
| CN111851527A (en) * | 2020-07-28 | 2020-10-30 | 深圳市市政工程总公司 | Foundation trench backfill construction method based on premixed fluidized solidified soil |
| CN112252336A (en) * | 2020-10-16 | 2021-01-22 | 中建八局发展建设有限公司 | Construction method for backfilling foundation trench of premixed fluidized solidified soil |
| CN112555503A (en) * | 2020-12-01 | 2021-03-26 | 上海宝冶集团有限公司 | Biological enzyme curing method for backfilling pipeline groove |
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| CN112252336A (en) * | 2020-10-16 | 2021-01-22 | 中建八局发展建设有限公司 | Construction method for backfilling foundation trench of premixed fluidized solidified soil |
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