CN109811612B - Gutter treatment permanent-temporary combined channel structure and construction method thereof - Google Patents
Gutter treatment permanent-temporary combined channel structure and construction method thereof Download PDFInfo
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- CN109811612B CN109811612B CN201910172060.4A CN201910172060A CN109811612B CN 109811612 B CN109811612 B CN 109811612B CN 201910172060 A CN201910172060 A CN 201910172060A CN 109811612 B CN109811612 B CN 109811612B
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- 238000010276 construction Methods 0.000 title claims abstract description 119
- 239000010410 layer Substances 0.000 claims abstract description 129
- 239000002344 surface layer Substances 0.000 claims abstract description 28
- 239000004575 stone Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000002689 soil Substances 0.000 claims description 21
- 244000025254 Cannabis sativa Species 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 8
- 230000001680 brushing effect Effects 0.000 claims description 7
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 239000011440 grout Substances 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000011835 investigation Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention relates to the field of civil engineering construction and discloses a ditch treatment permanent temporary combined channel structure, which comprises a ditch head of a ditch and a bridge site positioned at the downstream of the ditch head, wherein a construction channel is laid on the ditch head along the direction facing the bridge site, the lowest layer of the construction channel is a drainage layer filled with broken stone, a filling layer filled with earthwork is laid above the drainage layer, a U-shaped groove parallel to the construction channel is arranged in the middle of the top of the filling layer, and a surface layer is arranged on the top of the filling layer. The invention also discloses a construction method of the ditch treatment permanent temporary combined channel structure. The ditch treatment permanent combined channel structure and the construction method thereof effectively reduce the construction cost, the safety risk and the environmental pollution, and improve the construction efficiency.
Description
Technical Field
The invention relates to the field of civil engineering construction, in particular to a ditch treatment permanent-temporary combined channel structure and a construction method thereof.
Background
The gully is a groove formed by scouring intermittent running water on the ground surface, is one of the largest gauge modes in the erosion gully, and has a length of thousands of meters or tens of thousands of meters, a depth of several meters or tens of meters, and sometimes more than hundred meters. The loess beam and hills gully region of China has wide sections and is characterized in that mountains and mountains are fluctuated, gullies are crisscrossed, the beams and hills are alternately arranged, V-shaped gullies develop, engineering forms are mostly formed by gully bridging, and the beams and hills are deeply dug.
In order to meet the traffic demands of bridge engineering construction in deep-drawing ditch areas, the conventional channel construction adopts the steps that firstly, a drain pipe or a drain culvert is buried at the bottom of a ditch, which is several tens of meters away from a bridge site, then plain soil filling is carried out to span the ditch, and a supporting channel is filled between the channel and the bridge site to meet the traffic demands of machinery, equipment and personnel related to the construction of the ditch bottom. According to the method, on one hand, channels are blocked, flood prevention and drainage are affected, an original flushing channel is partitioned into two parts after filling is completed, barrier lakes are easily formed between upper channel heads and channels due to untimely drainage, original ecology is destroyed, water conservation and environmental protection are not facilitated, great potential safety hazards are caused, bridge channel bottom construction operation is affected, particularly loess filling channels are soaked by rainwater, blocking and disintegration problems are easy to occur, channel repairing work is increased, and crossing flushing channels are seriously threatened. Meanwhile, based on the aspects of flood discharge, environmental protection and the like, the filled loess of the passageway is required to be removed after the passageway is used, the filled loess is greatly influenced by the terrain height difference, the removal difficulty is extremely high, and secondary damage is caused to original ecological water and soil.
Disclosure of Invention
The invention aims to overcome the defects of the technology, and provides a temporary joint temporary channel structure for ditch treatment and a construction method thereof, which effectively reduce construction cost, safety risk and environmental pollution and improve construction efficiency.
In order to achieve the above purpose, the ditch treatment forever combined temporary channel structure comprises a ditch head which is positioned at the upper stream of a bridge site selection on the ditch, a construction temporary channel is paved in the ditch from the position of the ditch head towards the direction of the bridge site selection, the lowest layer of the construction temporary channel is a drainage layer filled by broken stone, a filling layer filled by earth is paved above the drainage layer, a U-shaped groove is formed in the middle of the top of the filling layer along the length direction of the construction temporary channel, a surface layer is arranged at the top of the filling layer, wherein broken stone has permeability, the foundation bearing capacity of the whole temporary channel structure meets the requirement, the water seepage at the bottom of the ditch is prevented from influencing the quality of the filling layer, hidden dangers such as emptying and the like at the bottom of the temporary channel structure are avoided, the earth is required to be layered and solid, the stability of filling soil is improved, the U-shaped groove is used for vehicle and drainage, the filling layer is further improved by the earth in the subsequent construction process, the vehicle and the earth is filled by the filling layer, the water seepage is further improved, the water seepage is prevented from being led to the filling layer, the water flow is prevented from being filled by the surface layer, the drainage layer is guaranteed to the surface layer, the water flow can meet the requirements during the construction of the construction, and the drainage layer is guaranteed, and the water flow can meet the requirements, and the requirements can meet the requirements of the requirements are met by the construction requirements, and the drainage layer can meet the requirements are met and the requirements.
Preferably, the drainage layer is located the downstream end of filling layer is equipped with the retaining wall, has strengthened the stability of side slope, and then guarantees to face permanently and combine the channel structure overall stability, the drainage layer is located the low reaches of retaining wall are equipped with the stilling ridge, become the rapid flow and slowly flow, reduce the impact force of rivers to the low reaches.
Preferably, a waterproof layer is laid between the drainage layer and the filling layer to prevent the filling layer from being influenced by water seepage at the bottom of the gully, and a waterproof layer is laid between the filling layer and the surface layer to prevent the filling layer from being influenced by surface water flow.
Preferably, the surface course is including being located the bottom surface course of U type groove bottom and being located the lateral part surface course of U type groove both sides, at bridge construction period the gravel has been laid to the bottom surface course, the lateral part surface course is equipped with grass planting protection or grout and builds the rubble protection, after the bridge construction finishes the bottom surface course backfills planting soil and is equipped with grass planting protection, has reduced rivers and has just erodeed of U type groove bottom.
Preferably, the length of the construction passageway is greater than the distance between the head and the bridge site.
Preferably, the upstream of the U-shaped groove is higher than the downstream of the U-shaped groove, and the surface layers are higher than the upper plane of the U-shaped groove along the two sides of the flushing groove.
Preferably, the minimum filling thickness of the drainage layer is greater than 0.5m of the water seepage accumulation height at the bottom of the flushing ditch, the height of the filling layer is matched with the depth of the flushing ditch at the construction position of the construction channel, and the end of the filling layer positioned at the downstream is provided with a grout stone protection by brushing a slope from bottom to top.
A construction method for a ditch treatment permanent combined channel structure comprises the following steps:
A) On-site investigation: selecting a ditch head position which is smaller in upstream ditch depth and easy to enter in the existing traffic as a filling starting point, and measuring the horizontal distance between the filling starting point and the bridge site selection, wherein the ditch depth is along the line;
B) Determining filling parameters: determining the filling height and filling the longitudinal slope according to the measurement data of the step A);
C) Building temporary support and temporary channel: constructing a temporary supporting channel from the existing road to the filling starting point, and meeting the traffic demands of machinery and equipment related to channel filling construction and bridge construction;
D) The drainage layer and the filling layer are filled in layers in the main body part: firstly, filling broken stone from the bottom of a gully to a position which exceeds the water seepage and accumulation height of the bottom of the gully by 0.5m by using equipment to form a drainage layer, wherein the loose paving thickness of each layer is not more than 0.5m, then backfilling and tamping the roadbed in a layered manner to form a filling layer, ensuring the compactness, increasing the stability of filling soil, reserving a U-shaped groove in the middle of the filling layer when the filling layer is constructed to be close to the top, and brushing steps from bottom to top when the filling layer is positioned at the downstream end of the filling layer;
E) And (3) end protection construction: when the filling layer is filled to the tail end, constructing the retaining wall and the stilling ridge by using manual cooperation equipment, wherein the retaining wall and the stilling ridge are both applied to the upper part of the drainage layer;
f) And (3) construction of the residual filling layer: after the end head protection construction is finished, finishing the construction of the end head of the residual filling layer, wherein the filling of the retaining wall back meets the backfilling construction requirement of the roadbed bench back, and meanwhile, the upper part of the retaining wall is subjected to step brushing from bottom to top to ensure the stability of the end head;
G) And (3) surface layer construction: the U-shaped groove reserved in the filling layer is protected, grass planting protection or slurry rubble protection is carried out on two sides of the U-shaped groove, a layer of gravel is paved on the bottom of the U-shaped groove, planting soil is backfilled on the bottom of the U-shaped groove and the surface layer after construction is finished, grass planting protection is arranged on the bottom of the U-shaped groove and the surface layer, and meanwhile water is guided to the U-shaped groove by setting slopes on the surface layer; the slope of the part of the end of the filling layer above the retaining wall is protected by grass planting or grout rubble;
h) And after the construction temporary road is completed, entering a bridge construction step.
Preferably, in the step D), the total filling length is divided into a plurality of sections, and the construction of the filling layer in the previous section can be performed after the construction of the drainage layer in the next section is completed, so that parallel construction is formed, and the construction efficiency is increased.
Preferably, each section forms a step meeting traffic requirements during construction.
Compared with the prior art, the invention has the following advantages:
1. Safety: the safety risks of large-height operation caused by untimely drainage to form barrier lakes and endanger the quality of the pavement entity and the later pavement cleaning process in the conventional method are avoided, particularly, the risk of disasters such as debris flow and the like in bridge engineering in a gully region and in a downstream region of the gully is effectively reduced by reducing the depth of the gully, and the bridge pier height can be reduced in the design stage so as to reduce the construction risk of high-altitude operation;
2. The reliability is as follows: aiming at dangerous sources such as easy damage of a filled soil body wetting structure, the bottom and the surface of the structure are waterproof, and the overall stability is ensured through end protection;
3. Economic: the cost of cleaning the filling soil body of the channel is saved;
4. The convenience is as follows: the construction equipment is conventional roadbed construction equipment, and the earth of the filling layer can be directly filled by the abandoned roadbed, so that smooth passing of bridge construction equipment is effectively ensured, and maintenance operation in the operation period is facilitated;
5. Ecology: secondary damage to original ecological water and soil is avoided, waste soil of road foundation construction is reused, ditches are filled, and land is created, so that the method is green, energy-saving and environment-friendly;
6. The invention has convenient construction and obvious advantages in the aspects of safety risk elimination, cost saving, ecological protection, construction efficiency and the like.
Drawings
FIG. 1 is a schematic cross-sectional view of a ditch in the forward direction of a ditch treatment permanent-junction channel structure according to the present invention;
FIG. 2 is a schematic cross-sectional view of a gutter-treated permanent-face-combined channel structure according to the present invention.
The reference numerals of the components in the drawings are as follows:
the construction method comprises the steps of a gully 1, a gully head 2, a construction channel 3, a drainage layer 4, a filling layer 5, a U-shaped groove 6, a surface layer 7, a retaining wall 8, a relief ridge 9, a grout sheet stone 10 and planting soil 11.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
As shown in fig. 1 and 2, the invention relates to a combined temporary channel structure for a ditch treatment, which comprises a ditch head 2 positioned at the upstream of bridge site selection on a ditch 1, a construction temporary channel 3 is paved in the ditch 1 from the position of the ditch head 2 along the direction facing the bridge site selection, the lowest layer of the construction temporary channel 3 is a drainage layer 4 filled with broken stone, a filling layer 5 filled with earth is paved above the drainage layer 4, a U-shaped groove 6 is arranged in the middle of the top of the filling layer 5 along the length direction of the construction temporary channel 3, a surface layer 7 is arranged at the top of the filling layer 5, the surface layer 7 comprises a bottom surface layer positioned at the bottom of the U-shaped groove 6 and side surface layers positioned at two sides of the U-shaped groove 6, gravel or slurry stone 10 is paved on the side surface layer at the bottom surface layer of the bridge construction period, and planting soil 11 and grass planting protection are backfilled on the bottom surface layer after the bridge construction is finished.
In addition, the drainage layer 4 is located the downstream end of filling layer 5 and is equipped with retaining wall 8, has strengthened the stability of side slope, and then guarantees to face to combine the channel structure overall stability forever, and the drainage layer 4 is located the downstream of retaining wall 8 and is equipped with the stilling ridge 9, changes the sudden flow into the slow flow, reduces the impact force of rivers to the low reaches.
Meanwhile, a waterproof layer is paved between the drainage layer 4 and the filling layer 5, the filling layer 5 is prevented from being influenced by water seepage at the bottom of a gully, a waterproof layer is paved between the filling layer 5 and the surface layer 7, and the filling layer 5 is prevented from being influenced by surface water flow.
In this embodiment, the upstream of the U-shaped groove 6 is higher than the downstream, the surface layer 7 is higher than the upper plane of the U-shaped groove 6 along the two sides of the ditch 1, the minimum filling thickness of the drainage layer 4 is greater than the water seepage and accumulation height 0.5m of the bottom of the ditch 1, the height of the filling layer 5 is matched with the depth of the ditch 1 at the construction position of the construction passageway 3, and the end of the filling layer 5 positioned downstream is provided with a serous rubble 10 for protection by brushing steps from bottom to top.
In this embodiment, the length of the construction channel 3 is longer than the distance between the channel head 2 and the bridge site selection, so that the length of the construction channel 3 exceeds the bridge site selection.
A construction method for a ditch treatment permanent combined channel structure comprises the following steps:
a) On-site investigation: selecting a ditch head 2 position with smaller upstream ditch depth of a ditch 1 and easy entry of the existing traffic as a filling starting point, and measuring the horizontal distance between the filling starting point and bridge site selection, wherein the ditch depth is along the line;
b) Determining filling parameters: c, determining the filling height and filling longitudinal slopes according to the measurement data of the step A;
C) Building temporary support and temporary channel: constructing a temporary supporting channel from the existing road to a filling starting point, and meeting the traffic demands of machinery and equipment related to channel filling construction and bridge construction;
D) The main body part of the drainage layer 4 and the filling layer 5 are filled in layers: firstly, filling broken stone from the bottom of a ditch 1 to a position which exceeds the water seepage level of the bottom of the ditch 1 by layers by utilizing equipment such as a bulldozer, a road roller, a dump truck and the like to form a drainage layer 4, wherein the loose paving thickness of each layer is not more than 0.5m, then, performing backfilling and tamping on the roadbed in layers to form a filling layer 5, ensuring the compactness, increasing the stability of filling soil, reserving a U-shaped groove 6 in the middle of the filling layer 5 when the filling layer 5 is constructed to be close to the top, and dividing steps from bottom to top for brushing slopes when the end of the filling layer 5 positioned at the downstream is constructed;
e) And (3) end protection construction: when the filling layer 5 is filled to the tail end, the construction of the retaining wall 8 and the relief ridge 9 is carried out by using equipment such as a manual cooperation chute, a crane and the like, wherein the retaining wall 8 and the relief ridge 9 are both applied to the upper part of the drainage layer 4;
F) And (5) constructing a residual filling layer: after the end head protection construction is finished, finishing the construction of the end head of the residual filling layer 5, filling the back of the retaining wall 8 to meet the backfill construction requirement of the roadbed bench back, and brushing the steps from bottom to top on the upper part of the retaining wall 8;
G) And (3) construction of a surface layer 7: the method comprises the steps of (1) carrying out protection treatment on a U-shaped groove 6 reserved in a filling layer 5, carrying out grass planting protection or slurry rubble 10 protection on two sides of the U-shaped groove 6, paving a layer of gravel on the bottom of the U-shaped groove 6, backfilling planting soil 11 on the bottom of the U-shaped groove 6 and a surface layer 7 after construction is finished, setting grass planting protection, and simultaneously setting a slope for the surface layer 7 to guide water flow to the U-shaped groove 6; the end of the filling layer 5 is positioned above the retaining wall 8, and the side slope is protected by grass planting or stone 10;
H) And after the construction channel 3 is completed, entering a bridge construction step.
In the step D), the total filling length is divided into a plurality of sections, the drainage layer 4 of the next section can be constructed by the filling layer 5 of the previous section after the construction is completed, steps meeting the traffic requirements are formed in each section during the construction, parallel construction is formed, and the construction efficiency is improved.
The ditch treatment permanent-temporary-combination temporary road structure and the construction method thereof have been successfully applied to the construction of the bridge temporary road of the Yinbai expressway and the horse mill ditch, greatly improve the construction efficiency, have obvious economic benefit and accord with the green construction concept.
The gutter processing permanent combined channel structure and the construction method thereof have the advantages of convenient construction, obvious advantages in the aspects of safety risk elimination, cost saving, ecological protection, construction efficiency and the like, avoid the safety risk of forming barrier lakes and damaging the quality of channel entities and working with large height difference in the later-stage channel clearing process due to untimely drainage in the conventional method, particularly reduce the depth of the gutter, thereby effectively reducing the risk of disaster such as debris flow and the like in bridge engineering in a gutter area and in a downstream area of the gutter, and reduce the bridge pier height in a design stage so as to reduce the construction risk of high-altitude operation; aiming at dangerous sources such as easy damage of a filled soil body wetting structure, the bottom and the surface of the structure are waterproof, and the overall stability is ensured through end protection; the cost of cleaning the filling soil body of the channel is saved; the construction equipment is conventional roadbed construction equipment, and the earth of the filling layer can be directly filled by the abandoned roadbed, so that smooth passing of bridge construction equipment is effectively ensured, and maintenance operation in the operation period is facilitated; the secondary damage to original ecological water and soil is avoided, the waste soil of road foundation construction is reused, the ditches are filled, the land is created, and the method is green, energy-saving and environment-friendly.
Claims (10)
1. The utility model provides a combination channel structure is faced forever in ditch processing, includes ditch head (2) that are located bridge site selection upper reaches on ditch (1), its characterized in that: construction passageway (3) have been laid along orientation in the position of ditch head (2) in ditch (1) the direction of bridge site selection, the lower floor of construction passageway (3) is drainage layer (4) that are filled by the rubble and form, filling layer (5) that are formed through the earthwork filling have been laid to the top of drainage layer (4), the middle part at filling layer (5) top is followed the length direction of construction passageway (3) is equipped with U type groove (6), the top of filling layer (5) is equipped with surface course (7).
2. The gully-processing permanent combined channel structure of claim 1, wherein: the drainage layer (4) is located the downstream end of filling layer (5) is equipped with retaining wall (8), drainage layer (4) are located the low reaches of retaining wall (8) are equipped with stilling ridge (9).
3. The gully-processing permanent combined channel structure of claim 2, wherein: a waterproof layer is paved between the drainage layer (4) and the filling layer (5), and a waterproof layer is paved between the filling layer (5) and the surface layer (7).
4. The gully-processing permanent binding channel structure of claim 3, wherein: the surface course (7) is including being located the bottom surface course of U type groove (6) bottom and being located the lateral surface course of U type groove (6) both sides, in the bridge construction period the gravel has been laid to the bottom surface course, the lateral surface course is equipped with grass planting protection or grout rubble (10) protection, after the bridge construction finishes bottom surface course backfills planting soil (11) and is equipped with grass planting protection.
5. The gully-processing permanent binding channel structure of claim 4, wherein: the length of the construction channel (3) is larger than the distance between the ditch head (2) and the bridge site.
6. The gully-processing permanent binding channel structure of claim 5, wherein: the upstream of the U-shaped groove (6) is higher than the downstream of the U-shaped groove, and the surface layers (7) are higher than the upper plane of the U-shaped groove (6) along the two sides of the gully (1).
7. The gully-processing permanent binding channel structure of claim 6, wherein: the minimum filling thickness of the drainage layer (4) is larger than the water seepage volume height of the bottom of the flushing ditch (1) by 0.5m, the height of the filling layer (5) is matched with the depth of the flushing ditch (1) at the construction position of the construction channel (3), and the end of the filling layer (5) positioned at the downstream is provided with a serous rubble (10) for protection from bottom to top in a step brushing mode.
8. A construction method of a ditch treatment permanent combined channel structure according to any one of claims 2 to 7, which is characterized in that: the method comprises the following steps:
A) On-site investigation: selecting a ditch head (2) position which is smaller in upstream ditch depth and easy to enter in the existing traffic of the ditch (1) as a filling starting point, and measuring the horizontal distance between the filling starting point and the bridge site selection, wherein the ditch depth is along the line;
B) Determining filling parameters: determining the filling height and filling the longitudinal slope according to the measurement data of the step A);
C) Building temporary support and temporary channel: constructing a temporary supporting channel from the existing road to the filling starting point, and meeting the traffic demands of machinery and equipment related to channel filling construction and bridge construction;
D) The drainage layer (4) and the filling layer (5) are filled in layers in the main body part: firstly, filling broken stone from the bottom of a ditch of the ditch (1) to a position which exceeds the water seepage level of the bottom of the ditch (1) by 0.5m by using equipment to form a drainage layer (4), loosening the layer thickness of each layer to be not more than 0.5m, then filling and tamping the roadbed in a layered manner to form a filling layer (5), ensuring compactness, increasing the stability of filling soil, reserving a U-shaped groove (6) in the middle of the filling layer (5) when the filling layer (5) is constructed to be close to the top, and dividing steps from bottom to top to brush slopes when the end of the filling layer (5) positioned at the downstream is constructed;
E) And (3) end protection construction: when the filling layer (5) is filled to the tail end, the construction of the retaining wall (8) and the relief ridge (9) is carried out by using manual cooperation equipment, wherein the retaining wall (8) and the relief ridge (9) are both applied to the upper part of the drainage layer (4);
f) And (5) constructing a residual filling layer: after the end head protection construction is finished, finishing the construction of the end head of the remaining filling layer (5), wherein the back filling of the retaining wall (8) meets the backfill construction requirement of the roadbed bench back, and meanwhile, the part above the retaining wall (8) is divided into steps from bottom to top and is brushed;
g) And (3) construction of a surface layer (7): the method comprises the steps of carrying out protection treatment on a U-shaped groove (6) reserved in a filling layer (5), carrying out grass planting protection or grout stone (10) protection on two sides of the U-shaped groove (6), paving a layer of gravel at the bottom of the U-shaped groove (6), backfilling planting soil (11) on the bottom of the U-shaped groove (6) and a surface layer (7) after construction is finished, setting grass planting protection, and simultaneously setting slopes for the surface layer (7) to guide water flow to the U-shaped groove (6); the end of the filling layer (5) is positioned above the retaining wall (8) and the side slope is protected by grass planting or grout rubble (10);
H) And after the construction channel (3) is completed, entering a bridge construction step.
9. The construction method of the ditch treatment permanent combined channel structure according to claim 8, which is characterized in that: in the step D), the total filling length is divided into a plurality of sections, and the construction of the filling layer (5) of the previous section can be carried out after the construction of the drainage layer (4) of the next section is completed.
10. The construction method of the ditch treatment permanent combined channel structure according to claim 9, which is characterized by comprising the following steps: each section forms a step meeting traffic requirements during construction.
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| JP2016217099A (en) * | 2015-05-26 | 2016-12-22 | 博 北川 | Temporary restoration method of road surface |
| KR101602935B1 (en) * | 2015-07-09 | 2016-03-11 | 윤강 | sinking preventing panel and the construction method of preventing sinking |
| CN106049508A (en) * | 2016-05-24 | 2016-10-26 | 重庆大学 | Pit-pond type depression earthwork and stonework filling structure and construction method |
| CN106192653A (en) * | 2016-08-30 | 2016-12-07 | 中国路桥工程有限责任公司 | A kind of Duo Xue district road crossing avalanche slide rock body subgrade drainage system and construction method |
| CN206052771U (en) * | 2016-08-31 | 2017-03-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Gravity Retaining Wall structure with culvert |
| CN207003417U (en) * | 2017-06-10 | 2018-02-13 | 中铁二院工程集团有限责任公司 | Quarrel backfill body sedimentation and stability contorting structure are abandoned in mountain area |
| CN207314485U (en) * | 2017-09-20 | 2018-05-04 | 山西省交通科学研究院 | A kind of loessial gulch area bridge lower part drainage system |
| CN209873485U (en) * | 2019-03-07 | 2019-12-31 | 中交第二航务工程局有限公司 | Permanent temporary combined toilet structure for gully treatment |
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| CN109811612A (en) | 2019-05-28 |
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