831 results about "Geogrid" patented technology

The invention discloses an intelligent heating geogrid-based roadbed settlement and frozen soil plasticity prediction system, which comprises an intelligent heating geogrid, a data acquisition unit, an intelligent heating control unit, a moisture content calculation unit and an analysis prediction unit, the intelligent heating control unit performs starting control on the heating resistance wire according to a soil body temperature value collected by the optical fiber temperature sensor so as to heat the self-heating steel pipe, the self-heating steel pipe heats the soil body, and the moisture content calculation unit calculates the moisture content of the soil body according to a temperature rise value of the soil body in unit time. And the analysis and prediction unit predicts roadbed settlement and frozen soil plasticity according to the soil moisture content and the grating dependent variable. The self-heating steel pipe is installed on the grating body, the water content of the soil body is monitored in real time while the soil body is heated, the subgrade settlement state and the frozen soil plastic characteristics are accurately predicted according to the collected data, and therefore scientific support is provided for safety evaluation and maintenance of subgrade engineering.

The invention discloses a reinforced soil structure design method based on finite difference analysis and considering anisotropy of a rib material, which comprises the following steps: establishing a roadbed reinforced soil corner slope three-dimensional model, simulating a roadbed layer by adopting a Duncan-Zhang nonlinear constitutive equation, simulating a foundation layer by adopting an elastic constitutive equation, and simulating a geogrid by adopting a Cable structure unit. A Geogrid structural unit is adopted to simulate the geotechnical cloth; on the basis of a verified model, different mechanical parameters are given to transverse and longitudinal ribs of the bidirectional geogrid to realize self-mechanical behavior anisotropy, the arrangement angle of a Cable unit and the center line of a reinforced soil structure is changed to realize the mechanical behavior anisotropy of a rib-soil interface, and meanwhile, other single or multiple variables can be adjusted, so that the mechanical behavior anisotropy of the rib-soil interface is realized. And testing the influence rule of the key factors on the mechanical properties of the reinforced soil structure. According to the method, the problem that the stress directions of the reinforced soil structure bars are inconsistent or uncertain under the complex geological condition can be solved, and more practical reinforced soil structure design parameters are effectively provided.

The utility model provides a bridge abutment back roadbed structure which comprises a first graded broken stone hardcore, a first earthwork standard room, a first bidirectional geogrid, a foam light soil layer group, a second bidirectional geogrid, a second graded broken stone hardcore, a second earthwork standard room and a concrete layer group, the first graded broken stone hardcore, the first two-way geogrid, the foam light soil layer group, the second two-way geogrid, the second graded broken stone hardcore and the concrete layer group are sequentially arranged from bottom to top, the first geocell is arranged in the first graded broken stone hardcore, and the second geocell is arranged in the second graded broken stone hardcore. And the second geocell is arranged in the second graded broken stone hardcore. According to the abutment back roadbed structure, the settlement characteristic of the roadbed is improved, the overall stability and the bearing capacity of the roadbed are improved, and the dead weight of the roadbed can be effectively reduced, so that post-construction settlement at the bridge joint is reduced, the stability and the bearing capacity of the roadbed are improved, and the safety and the comfort of driving are ensured.

The utility model provides a soft foundation levee slope reinforcing structure based on timber piles and geogrids. The soft foundation levee slope reinforcing structure comprises a soil levee body, a reinforcing levee slope, a soft soil levee foundation, the timber piles, a gravel soil backfilling layer, a ballast platform and the geogrids. An embankment top road is arranged at the upper part of the earth embankment body, and the side surface is an original embankment slope; the reinforced levee slope is located outside the original levee slope; the soft soil embankment foundation is located on the lower side of the soil embankment body. The lower ends of the timber piles are vertically inserted into the soft soil embankment foundation, and steel wire meshes are arranged at the tops; the gravel soil backfill layer is laid on the timber piles; the ballast platform is located on the upper side of the original levee slope and connected with the reinforced levee slope. The geogrids are located between the gravel soil backfill layer and the ballast platform and laid layer by layer along with filling of the ballast platform. The timber piles are used as the slide-resistant piles, so that the bearing capacity of the soft soil embankment foundation is improved; the stability and integrity of the levee slope are enhanced by adopting the ballast platform and the geogrid, the instability of the levee slope is prevented, the safety of the levee slope in the construction period and the operation period is guaranteed, and the engineering effect is good.

The invention belongs to the technical field of foundation treatment construction, and particularly relates to a rapid reinforcement construction method for a deep ultra-soft foundation. Comprising the following steps: step 1, in-situ sludge solidification; 2, leveling and partitioning are carried out; 3, construction of the cutoff wall; 4, well point dewatering; 5, high-pressure jet grouting reinforcement is conducted; 6, a geogrid reinforced broken stone hardcore is laid; and 7, leveling and rolling. According to the method, the three key steps of sludge in-situ solidification, well-point dewatering and high-pressure jet grouting pile construction are combined, the construction period is effectively shortened, the construction cost is reduced, the environmental protection property is good, the bearing capacity of the foundation can be remarkably improved, the stability and safety of a building are ensured, and an innovative solution is provided for reinforcement treatment of the ultra-soft soil foundation.

The weaving method of the high-strength three-dimensional composite geogrid comprises the steps of primary processing of the grid net, secondary processing of the grid net and winding of a finished product, the geogrid processed through the weaving method is of a double-layer structure, the double-layer grid net can be stored by a winding unit in an attached mode, and the double-layer grid net can be stored by the winding unit in an attached mode. Reeds of the adjusting parts can be inserted into meshes of the grating nets during storage, winding of the finished geogrid is not affected by arrangement of the adjusting parts, when the geogrid is used, only one-time laying is needed, the lower-layer grating net is fixed, and the upper-layer grating net is lifted to enable the upper connecting parts to be elastically clamped into clamping grooves in the outer sides of the two reeds, so that the geogrid is convenient to use. The supporting work of the double-layer grid net can be completed through the adjusting piece, so that the laying work of the geogrid can be simpler and quicker, and the soil fixation and slope protection effects of the geogrid are guaranteed.

The utility model belongs to the technical field of geogrids, and particularly relates to a reinforced geogrid which comprises first grid strips and second grid strips. A plurality of first grating strips are arranged in parallel at intervals; a plurality of second grid strips are arranged in parallel at intervals in the length direction of the first grid strips; the first grid strips and the second grid strips are perpendicularly staggered to form a plurality of grid chambers, reinforcing parts are arranged at the intersections of the first grid strips and the second grid strips, the thickness of the reinforcing parts is larger than that of the first grid strips and that of the second grid strips, and ground gripping structures and anti-skid structures are arranged on the upper faces and the lower faces of the reinforcing parts correspondingly. The ground gripping structure is used for increasing the ground gripping force of the bottom of the geogrid, and the anti-skid structure is used for increasing the friction force between the top of the geogrid and soil. The strength of the geogrid can be enhanced through the thickened reinforcing part, the geogrid is resistant to tear and deformation, the ground gripping structure and the anti-skid structure can enhance the connecting force between soil on the surface of the geogrid and the geogrid, and the overall stability of a slope can be improved through the geogrid.

The invention belongs to the technical field of soft soil foundation treatment, and discloses a soft soil foundation road reinforcing structure and a construction method thereof.The reinforcing structure comprises a plurality of cement soil mixing piles arranged in a soft soil foundation in an array mode; the multiple core piles are used for being inserted into the cement-soil mixing pile before initial setting of the cement-soil mixing pile, the multiple core piles and the multiple cement-soil mixing piles are arranged in a one-to-one correspondence mode, and each core pile comprises a pipe pile and a reinforcing piece which is filled and fixed in the pipe pile; the geogrid layer is laid on the top of the soft soil foundation and located above the multiple core pile areas, and a plurality of meshes are formed in the geogrid layer; a mattress layer; and a filler. The integrality, water stability and certain strength of the road soft soil foundation can be effectively improved, the bearing capacity and shear strength of the road subgrade are remarkably improved, meanwhile, differential settlement of the road subgrade can be effectively controlled by reinforcing the soft soil layer, and the construction quality is improved.

The utility model relates to the technical field of geocells, in particular to a geocell with fastener joints. Specifically, for any belt body of the geocell, a plurality of clamping parts which are evenly distributed in the length direction of the belt body are arranged on the belt body, and each clamping part is composed of a plurality of parallel kerfs; for any node of the geocell, two fasteners and a locking piece are arranged at the node; the fastener comprises a base body, and a plurality of limiting units are fixedly arranged above the base body; under the condition that the two fasteners are fastened oppositely, the limiting unit of one fastener is embedded with the limiting unit of the other fastener; the clamping parts of the two belt bodies at the node are overlapped, and the overlapped clamping parts are clamped between the limiting unit of one fastener and the limiting unit of the other fastener by the two fasteners; and the locking piece is used for locking the two fasteners which are oppositely fastened at the node. The joints of the geocell are excellent in mechanical property, and the geocell further has the advantages of being high in safety and low in cost.

The invention relates to a construction method for a roadbed penetrating through a V-shaped valley area, and belongs to the technical field of foundation engineering and foundation treatment. The problems of low foundation drainage efficiency, filling side slope instability and differential settlement control in V-shaped valley roadbed construction are solved. According to the technical scheme, a groove is dug along the bottom of a valley, a gravel drainage blind ditch wrapped by permeable geotextile is laid, and a foundation drainage system is formed; during layered filling, a vibratory roller with a piezoelectric sensor embedded into a steel wheel is adopted; after every two layers are filled, one-way geogrids are laid along the slope and vertically anchored into the compaction layer through U-shaped anchoring parts; a transverse drainage pipe is pre-buried when filling is conducted to a foundation bearing capacity sudden change point threshold value; and after filling is completed, a settlement monitoring array is arranged. According to the method, through system integration of foundation drainage structure optimization, filling body intelligent compaction and differential settlement dynamic treatment, the bearing stability of the fill roadbed under the complex terrain is remarkably improved, and the method is suitable for foundation construction and disaster prevention and control of the V-shaped canyon section of the mountain road.

The invention discloses a hole slag back pressure backfilling and roadbed structure integrated construction technology, and belongs to the technical field of road construction. Comprising the following steps: grading and screening the tunnel hole slag into large / medium / fine three-level aggregate, and then crushing and recombining to form graded improved aggregate; constructing a multi-layer backfill structure of a base layer, a transition layer and a reinforcing layer; interface shear strength is achieved through the gravel-geogrid composite transition layer; adopting a vibratory roller to implement a static pressure and vibratory rolling combined process with adaptive levels; a coarse / fine-particle-size two-stage cement stabilized macadam layer is laid on the top to form a permeation drainage channel, and a transverse drainage blind pipe system is arranged to achieve three-dimensional drainage. According to the technology, the problems that in traditional hole slag backfilling, aggregate grading discreteness is large, shear failure is likely to be caused by sudden change of interlayer modulus, interlayer combination weakening is caused by uneven layered rolling energy transfer, and structure instability is caused by pore water pressure accumulation are solved, and hole slag resource utilization and roadbed structure performance collaborative improvement are achieved.

The invention discloses a soft soil foundation embankment heightening and widening structure and a construction method, and belongs to the field of water conservancy projects. In order to solve the problems of uneven settlement, landslide instability and overlarge occupied area easily occurring when the soft soil foundation embankment is heightened and widened, the structure comprises precast concrete piles (top beams and ripraps are arranged on the tops of the piles) densely arranged at the slope toe outside the embankment, an inner side cantilever retaining wall (with drainage holes and a gravel inverted filter), geogrids laid in backfill soil in a layered mode, and CFG piles arranged on the lower portion in a plum blossom shape. The guardrail base and the flower bed are integrally poured with the retaining wall. The construction method comprises the steps of slide-resistant pile construction, earthwork excavation, CFG pile construction, retaining wall pouring, embankment body backfilling and embankment top road construction. Bidirectional control over settlement and horizontal displacement is achieved through cooperation of multiple structures, variable-stiffness leveling can be achieved by adjusting parameters of the CFG piles, and the variable-stiffness leveling structure has the advantages of skid resistance, stability, landscape optimization and land occupation saving and is suitable for soft soil foundation embankment upgrading and reinforcing projects.

The invention relates to the technical field of embankment reinforcing and widening, and provides an embankment widening construction method based on biomineralization and reinforcement cooperation. The microcosmic cementation effect of calcium carbonate precipitation in the inclusion is induced by the enzyme and is combined with the macroscopic constraint of the geogrid, so that a friction-cementation composite interface is formed, and the shear resistance and impermeability of the new and old roadbed combined surface are greatly improved. Meanwhile, the synergistic enhancement transition area serves as a rigidity coordination layer, loads can be effectively homogenized, differential deformation can be effectively absorbed, and therefore differential settlement is restrained, and reflection cracks are prevented. According to the method, the microcosmic cementation strengthening capacity of enzyme-induced calcium carbonate precipitation and the macroscopic reinforcement restraining capacity of the geotechnical reinforcement material are subjected to space coupling and function cooperation, the weak area of the widened embankment is fundamentally improved, and the integrity and long-term stability of the widened embankment are remarkably improved.

The invention relates to a self-repairing flow state solidified soil reinforced retaining wall for slope toe reinforcement and a construction method, and the retaining wall comprises a wall body which is formed by self-repairing flow state solidified soil in a cast-in-place mode and is provided with extension sections on the two sides, and drainage holes are formed in the extension sections; the foundation is arranged on the foundation and used for supporting the wall body; the reinforcement system is composed of multiple layers of geogrids and embedded in the wall body in a layered mode, one end of each layer of geogrid is anchored in the wall body, and the other end of each layer of geogrid extends backwards and is anchored in the backfill area; when the retaining wall has micro-cracks due to uneven settlement of a soft foundation, the high-alkali environment at the cracks can immediately trigger the alkali-sensitive self-repairing microcapsules to be broken, the released repairing material can generate gel in situ to seal the cracks, the mechanism converts traditional passive damage into active repairing, crack development is effectively restrained, an erosion channel is blocked, and the service life of the retaining wall is prolonged. Therefore, the long-term durability of the retaining wall is obviously improved.

The invention relates to the technical field of railroad bed structures, and discloses a deep season frozen soil area existing railroad bed heat preservation, water insulation and frost heaving prevention structure and a construction method of the deep season frozen soil area existing railroad bed heat preservation, water insulation and frost heaving prevention structure. The invention relates to a heat-insulating waterproof frost heaving-preventing structure for an existing railroad bed in a deep seasonal frozen soil region. The overall cross section of the existing railroad bed is of an axial symmetry structure along the center line of the railroad bed; the existing railway subgrade foundation bed is sequentially provided with a first gravel cushion layer, a waterproof geotechnical cloth layer, a second gravel cushion layer, a geogrid layer and a closed railway ballast layer from bottom to top. Polyurethane heat preservation layers are arranged on side slopes on the two sides of the existing railroad bed. A polyurethane heat preservation layer and a waterproof geotechnical cloth layer are sequentially arranged on the road shoulders on the two sides of the existing railroad bed from bottom to top. A drainage channel is arranged at the slope toe of the existing railroad bed; a polyurethane heat preservation layer is arranged on the connecting section of the slope toe of the existing railroad bed and the drainage channel. The thermal-insulation waterproof frost heaving prevention structure for the existing railroad bed in the deep seasonal frozen soil region can be suitable for treatment and maintenance of frost heaving disasters of the existing railroad bed in the deep seasonal frozen soil region, and has a good engineering application prospect.

The invention discloses a soft covering protection structure for an open earthen site in a humid environment and a construction method. The protection structure comprises a three-dimensional net-shaped geogrid overburden layer and a herbaceous plant layer. The three-dimensional net-shaped geogrid overburden layer is laid on the surface of the ruin body, and the herbaceous plant layer is located on the outer side of the three-dimensional net-shaped geogrid overburden layer. The three-dimensional net-shaped geogrid overburden layer comprises an inner-layer geogrid and an outer-layer geogrid, the space between the inner-layer geogrid and the outer-layer geogrid is filled with loose soil, and the loose soil, the inner-layer geogrid and the outer-layer geogrid are tamped together to form a rammed earth layer; the herbaceous plant layer comprises a planting soil layer laid on the outer geogrid, and herbaceous plants are planted on the planting soil layer. The slope protection device is used for protection of the abrupt slope under the heavy rainfall condition, and the purposes of controlling slope body shallow layer landslide and slowing down slope surface scouring erosion are achieved.

The utility model provides a passable pipe bag hydraulic reclamation cofferdam structure, which belongs to the technical field of cofferdam construction and comprises a geogrid layer fixedly arranged at the bottom of a river, a through bag layer laid on the geogrid layer, a lower cofferdam layer and an upper cofferdam layer. The cofferdam lower layer comprises a first left side pipe bag and a first right side pipe bag which are laid on the through bag layer, an inverted-T-shaped center area is formed between the first left side pipe bag and the first right side pipe bag, and the inverted-T-shaped center area is filled with a first layer of sand soil structure in a blowing mode. The problem that existing cofferdam construction is insufficient in stability and traffic capacity is solved, and the method has the advantages of being simple, easy to implement, high in operability, efficient and reliable and can be widely applied to cofferdam field construction.

The invention relates to the field of water conservancy projects, and provides a flexible ecological dam and a construction method thereof. The ecological dam comprises a dam body, film bag piles are constructed in the dam body, and geogrids are installed outside the film bag piles. The vegetation layer is laid on the upstream face and / or the downstream face; the water and soil protection blanket is laid on the vegetation layer so that the vegetation layer can be attached to the upstream face and / or the downstream face; and the protection foot is formed on the upstream face and closely attached to the embankment. According to the ecological dam, the dam and the foundation stratum can be integrated, the integrity and stability of the dam body structure are improved, and the anti-sliding performance of the dam is enhanced; the root system of the vegetation layer can be attached to the dam and locked tightly, the integrity of the dam is enhanced, and the safety of the dam is further enhanced. The protection feet are arranged on the upstream face, damage to the bottom embankment caused by rapid sand erosion can be resisted, and meanwhile the situation that a dam foundation is damaged due to water flow erosion or human factors on a riverbed and a seabed, and consequently the overall safety of the dam is affected is prevented.

The invention discloses a geogrid and EICP synergistically reinforced soil embankment structure and a construction method, and relates to the technical field of soil embankment structures. Comprising a pavement base layer, an embankment bearing layer and a natural soil foundation layer, and the natural soil foundation layer is used as a soil embankment structure support and is arranged at the bottommost layer; the pavement base layer is used for bearing an upper driving load and uniformly transferring the upper driving load to the embankment bearing layer below; and the embankment bearing layer is used for bearing the upper load transmitted by the pavement base layer. The engineering performance is improved through the multi-layer synergistic effect, the core reinforcing layer is of an innovative space grid structure and is composed of a prefabricated geogrid, a grid support arranged in the inclined direction and a rigid stress plate frame, a three-dimensional force transmission network is formed, the limitation of a traditional reinforcing method is broken through, and the engineering performance is improved. In addition, the grating support is arranged at a specific angle, the structural rigidity is guaranteed, and the stress concentration phenomenon is avoided.

A system for monitoring pavement infrastructure includes an edge network enabled sensor-enabled geogrid embedded within the pavement infrastructure, a microcontroller configured to receive signals from the sensor-enabled geogrid, and a communication network for transmitting the received signals from the microcontroller to a computer network. The sensor-enabled geogrid provides real-time data on the condition of the pavement, enabling efficient monitoring and maintenance. The microcontroller processes the signals from the geogrid, and the communication network facilitates the transmission of this data to a remote computer network for analysis and decision-making. This system enhances the ability to monitor pavement conditions, potentially improving maintenance strategies and extending the lifecycle of pavement infrastructure.

The present invention discloses an assembled multi-source solid waste fluidized solidified soil vertical reinforced retaining wall structure and construction method. The retaining wall structure includes a wall panel, a steel pipe frame, a geogrid and fluidized solidified soil. The wall panel is arranged on the left, right and front sides of the steel pipe frame and the inclined surface composed of the inclined steel pipe and the fourth horizontal steel pipe. The steel pipe frame is composed of a front vertical steel pipe, a first horizontal steel pipe and a second horizontal steel pipe, which are vertically connected to each other. The front vertical steel pipe and the rear vertical steel pipe are perpendicular to the ground. The rear vertical steel pipe is close to the slope and is vertically connected to the third horizontal steel pipe, the first horizontal steel pipe and the second horizontal steel pipe. An inclined steel pipe is arranged between the third horizontal steel pipe and the front vertical steel pipe, and a fourth horizontal steel pipe is arranged at both ends of the inclined steel pipe. The geogrid is arranged perpendicular to the first horizontal steel pipe, and the fluidized solidified soil is poured inside the steel pipe frame. The structure and construction method of the present invention realize the rapid assembly, continuous construction, cost saving, environmental protection and energy saving, and shear strength improvement of the retaining wall, thereby improving the engineering quality and social benefits.

The invention discloses a geotechnical bag suitable for a capillary barrier, a slope protection structure and a construction method of the geotechnical bag and the slope protection structure, and belongs to the field of slope engineering.The geotechnical bag comprises a prismatic table-shaped bag body, and the interior of the bag body is divided into a first filling cavity, a second filling cavity and a third filling cavity from left to right through two first geogrids which are arranged in parallel; the interior of the bag body is filled with aggregate through the first filling cavity, the second filling cavity and the third filling cavity, and the aggregate comprises coarse aggregate filled in the first filling cavity, fine aggregate filled in the second filling cavity and organic soil filled in the third filling cavity. According to the geobag suitable for the capillary barrier, the slope protection structure and the construction method of the geobag, the internal structure of the geobag is partitioned through the geogrid, a continuous protection wall is formed, the problems that a traditional geobag is poor in integrity, low in strength, prone to damage and not prone to degradation can be effectively solved, the safety and stability of a project are improved, and the service life of the geobag is prolonged. Meanwhile, good environment-friendly performance is also realized.

The utility model discloses a basalt fiber geogrid which comprises a plurality of geogrid strips and first connecting assemblies, the geogrid strips are divided into transverse grid strips and longitudinal grid strips, the geogrid strips penetrate through the first connecting assemblies, and the staggered positions of the transverse grid strips and the longitudinal grid strips are fixed to the first connecting assemblies; the first connecting assembly comprises a grating strip connecting block and a fixed cutting cone which are integrally formed, and a first mounting inserting groove is formed in the lower portion of the front face of the grating strip connecting block and penetrates through the grating strip connecting block. According to the utility model, the plurality of geogrid strips are fixedly connected through the connecting assemblies, so that the plurality of geogrid transverse strips which are arranged at equal intervals and the plurality of geogrid longitudinal strips which are arranged at equal intervals form the geogrid, and the assembling width and length of the geogrid can be freely adjusted according to actual civil construction requirements; and the situation that the grids are overlapped or gaps exist between the grids is avoided, and the using effect of the whole geogrid is guaranteed.

The invention relates to a marsh area roadbed treatment method, which comprises the following steps of: longitudinally excavating two parallel drainage open ditches on the top surface of a roadbed at intervals, excavating a foundation trench which is 0.5 m below an underground water level line in an area between the open ditches, paving a broken stone hardcore and a two-way stretching plastic geogrid in an ultra-wide manner, filling lime improved soil with quicklime fineness of less than or equal to 5mm and digestion rate of more than or equal to 90% in a layered manner, and carrying out subgrade treatment. The compactness is controlled to be larger than or equal to 93% through a vibratory roller, then a composite impermeable layer composed of a cement stabilizing layer, an HDPE geomembrane and a medium-coarse sand protection layer is laid, and a permeable pipe is embedded in the longitudinal direction of the roadbed and communicated with the open drain. Through the synergistic effect of the three-dimensional drainage system and the multi-layer structure, the roadbed drainage efficiency is effectively improved, the foundation stability and seepage-proofing performance are enhanced, and the method is mainly suitable for foundation treatment of road engineering in the marsh area.

The invention discloses a self-adaptive regulation and control method for differential settlement of a new roadbed and an old roadbed in old road widening, belongs to the technical field of road engineering, and solves the technical problems of longitudinal cracks, slab staggering and other diseases caused by differential settlement of a new roadbed and old roadbed combined part in old road widening engineering. According to the key points of the technical scheme, the method comprises the following steps: vertically excavating a groove with the depth of 1.4-1.6 m and the width of 0.8-1.0 m at the junction of an old roadbed and a new roadbed; backfilling 5-20mm graded broken stones layer by layer, and tamping until the compaction degree is 96%; a bidirectional geogrid with the tensile strength of 80 kN / m is laid; a cement macadam transition layer with the thickness of 0.3-0.6 m is arranged, and a 2% drainage slope is formed; a settlement monitoring pipe is buried, real-time monitoring is conducted through an optical fiber sensor, and when the settlement difference exceeds 15 mm, automatic grouting is adjusted and controlled to be smaller than 5 mm. The method is mainly used for accurately controlling differential settlement of new and old roadbeds and improving the road stability and the service life.

The invention provides a high-filling slope ecological protection construction method, and relates to the technical field of slope protection engineering. The construction method comprises the following implementation steps: step 1, slope pretreatment; the method comprises the following steps: firstly, shaping and trimming a high-filled side slope, cleaning surface topsoil, gravels and weeds, and synchronously presetting a through-type drainage system at the top, the waist and the toe of the side slope; comprising the four steps of anchor rod laying, grouting and anchoring, lattice beam pouring and geogrid laying, specifically, drilling is conducted on the trimmed slope surface of the side slope, anchor rods are laid, lattice beams fixedly connected with the anchor rods are formed through pouring, then the geogrids are flatly laid in the coverage area of the lattice beams, and double fixing is completed. The anti-sliding stability of the slope body is enhanced, the geogrids can disperse the load of the slope body, the shear strength of the surface soil body of the slope is improved, the overall stability of the high-filled slope is remarkably improved, and geological disasters such as landslide and collapse of the slope are effectively prevented.

The invention discloses a construction method for a coal mining subsidence land sponge field, and belongs to the technical field of sponge field construction. The high-strength geogrid is laid at the bottom of the backfill layer, the gangue filling layer bonded by Portland cement is combined, a rigid framework and flexible reinforced composite foundation structure is formed, differential settlement of a subsidence area is restrained, the gangue filling layer consolidated by cement prevents secondary collapse, the permeable material layer is arranged under the earth surface, and the water-permeable material layer is arranged under the earth surface. The water-permeable layer is formed by mixing modified coal gangue loaded compound fertilizer, broken stone and gravel, the water-permeable layer intercepts nutrients through the ion exchange effect of the modified coal gangue, graded pores of the broken stone and the gravel promote rapid infiltration of rainwater, waterlogging is avoided, and the surface layer is covered with a mixture of the modified coal gangue loaded compound fertilizer and local soil. A water retention-ventilation-fertilizer supply microenvironment is formed, the pore structure of the coal gangue improves the air permeability of the soil, the graft copolymer can retain water, slowly release and reduce water evaporation, and deep-root crops penetrate through roots to consolidate the soil and improve the erosion resistance.

The utility model discloses a novel geogrid which comprises a grid body, and the grid body is formed by a plurality of transverse geogrid strips and a plurality of vertical geogrid strips in a staggered mode. The grille further comprises a fixing frame located outside the grille body. Fixing grooves are formed in the inner side of the fixing frame, are uniformly distributed on the inner wall of the fixing frame and are matched with the outer side of the grille body; transverse holes and vertical holes are formed in the two sides of the long edge and the two sides of the short edge of the fixing frame respectively, a first fixing sleeve is arranged in the transverse hole in one side, a first fixing rod is arranged in the transverse hole in the other side, the first fixing rod is matched with the first fixing sleeve, a second fixing sleeve is arranged in the vertical hole in one side, a second fixing rod is arranged in the vertical hole in the other side, and the second fixing rod is matched with the second fixing sleeve. The utility model belongs to the technical field of geogrids, and particularly provides a novel geogrid which is used for solving the problems that in the prior art, a plane structure is flat, the friction coefficient is low, the reinforcement effect is poor, and the integrity between adjacent grids is poor in the using process.

The invention discloses a reinforced geogrid and a manufacturing process thereof, relates to the technical field of geogrids, and aims at solving the technical problems that when a conventional geogrid is used for slope reinforcement engineering, the node position of the conventional geogrid bears large pressure, the conventional geogrid is prone to breakage, and the conventional geogrid is prone to displacement. A plurality of reinforcing ribs are arranged on the top face of the geogrid body, a plurality of reinforcing ribs of the same structure are arranged on the bottom face of the geogrid body, each reinforcing rib comprises four vertex angle circular plates and a center circular plate, the vertex angle circular plates are connected with the side wall of the center circular plate through toothed plates, the top faces of the toothed plates are of a sawtooth-shaped structure, and the whole reinforcing ribs are of an X-shaped structure. The geogrid has the advantages that the probability that the geogrid body slides in a soil layer is reduced, the nodes of the geogrid body can effectively resist shear force generated by slope soil sliding, the capacity of the nodes for resisting lateral pressure of the slope soil layer is enhanced, and the probability that the nodes are broken is reduced.

The utility model provides a roadbed structure of a soft soil foundation, which relates to the technical field of roadbed structures and comprises a soft foundation layer, a soil filling layer, a pavement layer and a reinforcing mechanism. According to the roadbed structure of the soft soil foundation, the geotechnical grid is flatly laid and placed on the soft foundation layer, the pouring pipes are inserted into the threaded pipe openings in the two ends of the geotechnical grid, the conical heads move downwards to be inserted into the soft foundation layer below, the threaded connectors and the threaded pipe openings are fixed together through the threaded sleeves, the reinforcing mechanisms are fixed, and the pouring pipes are filled with cement paste; cement paste flows out from the grouting holes in the bottom and the peripheral side of the grouting pipe through the pipe cavity and diffuses towards the periphery, in the grouting process, pressure can be generated when the cement paste is injected into the soft base soil layer, loose soil particles in the soft base soil body are squeezed towards the peripheral side through the pressure to be densified, and after the cement paste is solidified in the soil layer, a solid cementing material is formed. Loose soil particles are bonded together, so that the shear strength and the bearing capacity of a soil body are improved, and sedimentation and deformation are reduced.