CN109763389B - Construction method for protecting dredged sludge non-sintered ceramsite concrete vegetation block roadbed - Google Patents

Abstract

The invention discloses a dredged sludge non-sintered ceramsite concrete vegetation block roadbed protection construction method, which comprises grouting vegetation, construction preparation, slope protection construction and pointing maintenance, wherein a layer of metal mesh is firstly fixed at the bottom of a slope to perform preliminary landslide prevention, and then a plurality of layers of bottom blocks and top blocks are piled on the metal mesh to further stabilize the roadbed side slope and prevent landslide instability; the top building block and the bottom building block are made of silt, so that the building block is low in cost and environment-friendly; the first through-hole and the downthehole earth that is filled of third through-hole, the inserted block can shelter from first through-hole completely after inserting the slot, injects the grass seed that thoughtlessly has the binder in the inserted block, can improve the resistance to washout of grass seed to, the root hair of grass seed after sprouting is located the inserted block bottom surface, can effectively resist heavy rainfall and erode.

Description

Construction method for protecting dredged sludge non-sintered ceramsite concrete vegetation block roadbed

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of roadbed construction, in particular to the technical field of a protective construction method of a dredged sludge non-sintered ceramsite concrete vegetation block roadbed.

[ background of the invention ]

The protection of the roadbed slope mainly protects the roadbed slope from being eroded by rainwater or damaged by long-term erosion, thereby protecting the integral stability of the roadbed slope. There are a great deal of drawbacks in traditional grout rubble protection, include: large stone consumption, low construction efficiency, difficult maintenance and repair, old and monotonous appearance, and is not suitable for landscape greening. With the development and change of economy and society, the development of novel ecological protection structures is urgently needed.

In recent years, a large amount of dredging sludge is generated in river dredging, secondary pollution is easily generated by common methods of hydraulic filling, mud dumping and stacking filling, and harmless treatment is necessary. Along with the gradual shortage of natural resources and the rapid increase of solid wastes, people can recycle dredged sludge, a sintering-free ceramsite process is adopted to produce hollow concrete blocks, soil is directly filled in holes of the blocks and plants are planted when the concrete blocks are used, but the problem of poor soil fixing capacity of the surfaces of the blocks exists, and when snow melts and rainstorm is concentrated or the water flow speed is high, due to the poor water flow impact resistance, grass and thin-layer soil are easily washed away by rainwater and run off, water and soil are not easily preserved, and the planting effect is poor.

[ summary of the invention ]

The invention aims to solve the problems in the prior art and provides a construction method for protecting a dredged sludge non-sintered ceramsite concrete vegetation block roadbed, which can be used for primarily preventing landslide by fixing a layer of metal mesh at the bottom of a slope and then piling a plurality of layers of bottom blocks and top blocks on the slope to further stabilize the roadbed side slope and prevent the landslide from being unstable; the top building block and the bottom building block are made of silt, so that the building block is low in cost and environment-friendly; the first through-hole and the downthehole earth that is filled of third through-hole, the inserted block can shelter from first through-hole completely after inserting the slot, injects the grass seed that thoughtlessly has the binder in the inserted block, can improve the resistance to washout of grass seed to, the root hair of grass seed after sprouting is located the inserted block bottom surface, can effectively resist heavy rainfall and erode.

In order to achieve the purpose, the invention provides a construction method for protecting a dredged sludge non-sintered ceramsite concrete vegetation block roadbed, which comprises the following steps:

a) grouting and planting: 1-2 parts of grass seeds for greening, 3-6 parts of adhesive, 15-20 parts of organic fertilizer, 50-60 parts of mucky soil and 40-50 parts of water are placed in a stirring container and stirred uniformly to form colloidal mixed slurry, and then the stirred colloidal slurry is injected into an insert block of a top building block by a pressure grouting method;

b) construction preparation: manually finishing the slope surface, removing floating soil, filling pits and pits, and keeping the slope surface approximately flat;

c) slope protection construction: firstly, laying a layer of metal net on a slope surface and anchoring by adopting U-shaped nails, wherein the aperture of the metal net is larger than the long edge of a bottom block, then, building the bottom blocks in a layered and segmented manner by adopting a squeezing method, filling soil into a third through hole of each layer of bottom block after building each layer of bottom block, arranging a segmented position at a settlement joint, wherein the layered horizontal joint is approximately horizontal, the joints of the bottom blocks are staggered with each other, the staggered distance is at least 8cm, the bottom block at the bottommost layer is embedded into the slope surface by at least 0.2cm, an expansion joint is arranged at intervals of 10-20 m along the slope protection line, the joint width is 0.02-0.03 m, an asphalt reinforcement is blocked in the joint, the depth is not less than 0.2m, then, building a top block on the bottom block at the topmost layer, filling soil into a first through hole of the top block after each top block is placed, then inserting an insertion block of the next top block into an insertion slot of the previous top block until building, then knocking down the insertion block of the top building block positioned at the most edge;

d) pointing and maintaining: shoveling out the mortar between the joints with the thickness of 2-3 cm, sprinkling water to wet the joints, then pointing with the cement mortar, and then sprinkling water to keep the building blocks wet, wherein the sprinkling water curing period is at least 7 days.

Preferably, the building block comprises a top building block and a bottom building block, the top building block comprises a building block body with a first through hole in the center and an insert block positioned on the left side of the building block body, the insert block is provided with a plurality of second through holes, the right side of the building block body is provided with a slot communicated with the first through hole, the top of the first through hole is provided with a circle of inclined protrusions, the center of the bottom building block is provided with a third through hole, the position and the size of the slot correspond to those of the insert block, the top building blocks can be connected back and forth through the insertion of the insert block and the slot, the protrusions are positioned on the insert block, the first through hole can be completely shielded after the insert block is inserted, and the included angle between the protrusions and the horizontal line is 30-45 degrees.

The invention has the beneficial effects that: the method comprises the steps of firstly fixing a layer of metal mesh at the bottom of the slope to perform preliminary landslide prevention, and then piling a plurality of layers of bottom building blocks and top building blocks on the metal mesh to further stabilize the side slope of the roadbed and prevent landslide from being unstable; the top building block and the bottom building block are made of silt, so that the building block is low in cost and environment-friendly; the first through-hole and the downthehole earth that is filled of third through-hole, the inserted block can shelter from first through-hole completely after inserting the slot, injects the grass seed that thoughtlessly has the binder in the inserted block, can improve the resistance to washout of grass seed to, the root hair of grass seed after sprouting is located the inserted block bottom surface, can effectively resist heavy rainfall and erode.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a top view of a top block;

FIG. 2 is a front cross-sectional view of the top block;

FIG. 3 is a top view of the bottom block;

in the figure: 1-top block, 11-block body, 111-first through hole, 112-bulge, 113-slot, 12-insert block, 121-second through hole, 2-bottom block and 21-third through hole.

[ detailed description ] embodiments

Referring to fig. 1, fig. 2 and fig. 3, the construction method for protecting the foundation by the dredged sludge non-sintered ceramsite concrete vegetation block comprises the following steps:

a) grouting and planting: 1-2 parts of grass seeds for greening, 3-6 parts of adhesive, 15-20 parts of organic fertilizer, 50-60 parts of mucky soil and 40-50 parts of water are placed in a stirring container and stirred uniformly to form colloidal mixed slurry, and then the stirred colloidal slurry is injected into the insert block 12 of the top block 1 through a pressure grouting method;

b) construction preparation: manually finishing the slope surface, removing floating soil, filling pits and pits, and keeping the slope surface approximately flat;

a) slope protection construction: firstly, laying a layer of metal net on a slope surface and anchoring by adopting U-shaped nails, wherein the aperture of the metal net is larger than the long edge of a bottom block 2, then, building the bottom blocks 2 in a layered and segmented manner by adopting a squeezing method, filling soil into a third through hole 21 of the bottom block 2 after the building of each layer of bottom block 2 is finished, arranging a segmentation position at a settlement joint, wherein a layered horizontal joint is approximately horizontal, the joints of the bottom blocks 2 are staggered with each other, the staggered distance is at least 8cm, the bottom block 2 at the bottommost layer is embedded into the slope surface by at least 0.2cm, arranging an expansion joint at intervals of 10-20 m along the slope protection line, the joint width is 0.02-0.03 m, blocking asphalt reinforcement in the joint, the depth is not less than 0.2m, then, placing a top block 1 on the bottom block 2 at the topmost layer, filling a first through hole 111 of the top block 1 after placing one top block 1, then inserting an insertion block 12 of the next top block 1 into an insertion slot 113 of the previous top block, until the top building block 1 on the top layer is built, knocking down the insert block of the top building block 1 on the edge;

b) pointing and maintaining: shoveling out the mortar between the joints with the thickness of 2-3 cm, sprinkling water to wet the joints, then pointing with the cement mortar, and then sprinkling water to keep the building blocks wet, wherein the sprinkling water curing period is at least 7 days.

The building block comprises a top building block 1 and a bottom building block 2, wherein the top building block 1 comprises a building block body 11 with a first through hole 111 in the center and an insertion block 12 positioned on the left side of the building block body 11, the insertion block 12 is provided with a plurality of second through holes 121, the right side of the building block body 11 is provided with a slot 113 communicated with the first through hole 111, the top of the first through hole 111 is provided with a circle of inclined protrusions 112, the center of the bottom building block 2 is provided with a third through hole 21, the position and the size of the slot 113 correspond to those of the insertion block 12, the top building blocks 1 can be connected front and back through the insertion of the insertion block 12 and the slot 113, the protrusions 112 are positioned on the insertion block 12, the insertion block 12 can completely shield the first through hole 111 after being inserted, and the included angle between the protrusions 112 and the horizontal line is 30-45 degrees.

The method comprises the steps of firstly fixing a layer of metal mesh at the bottom of the slope to perform preliminary landslide prevention, and then piling a plurality of layers of bottom building blocks and top building blocks on the metal mesh to further stabilize the side slope of the roadbed and prevent landslide from being unstable; the top building block and the bottom building block are made of silt, so that the building block is low in cost and environment-friendly; the first through-hole and the downthehole earth that is filled of third through-hole, the inserted block can shelter from first through-hole completely after inserting the slot, injects the grass seed that thoughtlessly has the binder in the inserted block, can improve the resistance to washout of grass seed to, the root hair of grass seed after sprouting is located the inserted block bottom surface, can effectively resist heavy rainfall and erode.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims (2)

1. A dredged silt non-sintered ceramsite concrete vegetation block roadbed protection construction method is characterized by comprising the following steps: the method comprises the following steps:

a) grouting and planting: the building block comprises a top building block (1) and a bottom building block (2), wherein the top building block (1) comprises a building block body (11) with a first through hole (111) in the center and an inserting block (12) positioned on the left side of the building block body (11), the inserting block (12) is provided with a plurality of second through holes (121), the right side of the building block body (11) is provided with a slot (113) communicated with the first through hole (111), the top of the first through hole (111) is provided with a circle of inclined bulges (112), the center of the bottom building block (2) is provided with a third through hole (21), the position and the size of the slot (113) correspond to those of the inserting block (12), the top building blocks (1) can be connected back and forth through the inserting of the inserting block (12) and the slot (113), the bulges (112) are positioned on the inserting block (12), and the inserting block (12) can completely shield the first through hole (111), 1-2 parts of grass seeds for greening, 3-6 parts of adhesive, 15-20 parts of organic fertilizer, 50-60 parts of mucky soil and 40-50 parts of water are placed in a stirring container and stirred uniformly to form colloidal mixed slurry, and then the stirred colloidal slurry is injected into an insert block (12) of a top block (1) by a pressure grouting method;

b) construction preparation: manually finishing the slope surface, removing floating soil, filling pits and pits, and keeping the slope surface approximately flat;

c) slope protection construction: firstly, laying a layer of metal net on a slope surface and anchoring by adopting U-shaped nails, wherein the aperture of the metal net is larger than the long edge of a bottom block (2), then, building the bottom block (2) by layers and sections by adopting a squeezing method, filling soil in a third through hole (21) of the bottom block (2) after the building of each layer of bottom block (2) is completed, the section position is arranged at a settlement joint, the horizontal joint by layers is approximately horizontal, the joints of the bottom blocks (2) are staggered with at least 8cm, the bottom block (2) at the bottom layer is embedded into the slope surface with at least 0.2cm, an expansion joint is arranged at intervals of 10-20 m along the slope protection line direction, the joint width is 0.02-0.03 m, an asphalt reinforcement is blocked in the joint, the depth is not less than 0.2m, then, building a top block (1) on the bottom block (2) at the top layer, and filling the soil in a first through hole (111) of the top block (1) after each top block (1) is placed, then inserting the insert block (12) of the next top block (1) into the slot (113) of the previous top block (1) until the top block (1) on the top layer is built, and knocking down the insert block of the top block (1) on the edge most;

d) pointing and maintaining: shoveling out the mortar between the joints with the thickness of 2-3 cm, sprinkling water to wet the joints, then pointing with the cement mortar, and then sprinkling water to keep the building blocks wet, wherein the sprinkling water curing period is at least 7 days.

2. The dredged sludge non-sintered ceramsite concrete vegetation block roadbed protection construction method as claimed in claim 1, characterized in that: the included angle between the bulge (112) and the horizontal line is 30-45 degrees.

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