CN113482020A - Construction method of flexible protective net for complex environment side slope in tourist attraction - Google Patents
Construction method of flexible protective net for complex environment side slope in tourist attraction Download PDFInfo
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- CN113482020A CN113482020A CN202110906471.9A CN202110906471A CN113482020A CN 113482020 A CN113482020 A CN 113482020A CN 202110906471 A CN202110906471 A CN 202110906471A CN 113482020 A CN113482020 A CN 113482020A
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- 238000010276 construction Methods 0.000 title claims abstract description 58
- 230000001681 protective effect Effects 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 80
- 239000010959 steel Substances 0.000 claims abstract description 80
- 239000011435 rock Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000009958 sewing Methods 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims abstract description 4
- 239000011440 grout Substances 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 12
- 239000004575 stone Substances 0.000 claims description 12
- 239000008262 pumice Substances 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000007596 consolidation process Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 9
- 239000004568 cement Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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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
- E02D17/202—Securing of slopes or inclines with flexible securing means
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a construction method of a complex environment side slope flexible protective net in a tourist attraction, and belongs to the technical field of installation of side slope flexible protective nets. A construction method of a flexible protective net for a complex environment side slope in a tourist attraction comprises the following steps: cleaning dangerous rocks on the slope; installing a transverse boundary rope along the upper edge of the slope; horizontally pushing and paving a grid net from top to bottom along the top of the slope; horizontally pushing a steel rope anchor rod along the slope from top to bottom to form a hole, and inserting the steel rope anchor rod into the steel rope anchor rod hole; installing longitudinal and transverse supporting ropes along the steel rope anchor rods; installing a steel rope net and sewing, wherein a transverse boundary rope is installed at the top of a side slope, so that a fixing point is provided for a construction operation safety rope; by paving the grid net, the danger of falling rocks induced in construction on the safety of constructors, road traveling and road pedestrians is avoided; by paving the grid net firstly and then constructing the steel cable anchor rods and the longitudinal and transverse supporting ropes, the exposure time of the construction surface is shortened, the safety risk in the construction process is avoided, and the economic benefit and the social benefit are improved.
Description
Technical Field
The invention relates to a side slope flexible protective net installation technology, in particular to a construction method of a side slope flexible protective net in a complex environment of a tourist attraction.
Background
With the vigorous development of the tourism industry, the problem of disaster prevention and control of scenic spots in mountainous areas is increasingly prominent, and the driving safety and tourist passing safety of scenic roads face more and more side slope rockfall disasters. At present, a common measure for scenic spot side slope rockfall protection is an active flexible protective net. The active flexible protective net has the advantages of simple construction, high construction speed, small influence on environment and the like, and is widely adopted. However, the construction risk of the active flexible protective net is high, the uncertain factors are many, and how to ensure the safety of traffic of scenic spot roads and tourists in the construction process is the primary problem.
The traditional construction method at present is as follows: trimming slope → drilling hole → installing steel cable anchor rod → installing support rope → installing grid net → installing steel cable net. In the process of drilling → installing anchor rod → installing support rope, the method is difficult to ensure that disasters such as stone falling and the like caused by construction reasons can not threaten the safety of construction workers, the safety of road driving and the safety of road pedestrians. For safety in production, the temporary closed road is generally adopted to avoid the threat of road traffic and pedestrians, but the safety problem of construction workers still cannot be solved, and the normal operation of scenic spots can be influenced. Therefore, a construction method which can ensure the safety of construction workers and can not influence the normal operation of scenic spots to the maximum extent is needed, and in view of the above, a construction method for a flexible protective net for a complex environment side slope in a tourist scenic spot is provided.
Disclosure of Invention
The invention aims to provide a construction method of a flexible protective net for a complex environment side slope in a tourist attraction, which aims to solve the problems in the background technology: the construction method not only can ensure the safety of construction workers, but also can furthest not influence the normal operation of the scenic spot, and particularly solves the problem of influence of rockfall and the like caused by early drilling on the safe operation of the scenic spot.
In order to achieve the purpose, the invention provides the following technical scheme:
a construction method of a flexible protective net for a complex environment side slope in a tourist attraction comprises the following steps:
s1: clearing dangerous rocks on the slope: the dangerous stones and the pumice stones existing on the slope surface are cleaned one by one downwards along the top of the slope;
s2: installing a transverse boundary rope at the top of the slope: determining hole positions of anchor rods of ropes along the transverse boundary on the slope according to the protection area, drilling the anchor rod holes by adopting an air pick, inserting steel rope anchor rods, grouting, installing and tensioning a transverse boundary rope of the slope top, and connecting and fixing two ends of the tensioned transverse boundary rope by using two steel rope clamps;
s3: installing a grid net: horizontally pushing and paving a grid net from top to bottom along the top of the slope;
s4: drilling and installing a steel rope anchor rod: horizontally pushing along the slope from top to bottom to form a hole by using a steel rope anchor rod, and inserting the steel rope anchor rod into the steel rope anchor rod hole to form square arrangement; grouting in the steel rope anchor rod hole;
s5: installing longitudinal and transverse supporting ropes: installing longitudinal and transverse supporting ropes along the steel rope anchor rods, wherein two ends of each supporting rope need to be tensioned, and after tensioning is finished, fixedly connecting the supporting ropes by using two steel rope clamps;
s6: installing and sewing a steel rope net: lay the wire rope net along domatic from last down, the wire rope net adopts wire rope to sew up, sews up the rope and sews up and stretch-draw along indulging horizontal support rope direction during the sewing up, sews up the rope both ends and adopts two rope clamps to connect fixedly.
Preferably, the dangerous rock and pumice cleaning in step S1 is completed cleaning, temporary treatment in situ (burying in situ or piling in pit), pre-consolidation treatment (consolidation with steel bar anchor rods or single pier anchor cables), and manual removal.
Preferably, the boundary rope anchor rod hole described in step S2 should be perpendicular to the slope, the steel rope anchor rod should be moved up and down while grouting, when grout overflows from the hole, grouting can be suspended, and secondary grout replenishment is performed later.
Preferably, in step S3, the grid meshes are stitched by iron wires with a diameter of 2mm at intervals of 1m, the overlapping width of the grid meshes is not less than 5cm, and the grid meshes and the slope top boundary ropes are stitched by iron wires with a diameter of 2mm at intervals of 1 m.
Preferably, the hole position of the steel rope anchor rod in the step S4 should be located at a sloping surface pit, and if the hole position of the steel rope anchor rod on the sloping surface is higher, a pit needs to be dug manually, so that the support rope is ensured to be tightly attached to the ground.
Preferably, in step S4, the steel cable anchor eye is perpendicular to the slope and the angle between the steel cable anchor eye and the horizontal is equal to or greater than 15 °.
Preferably, in step S4, drilling a hole in the bedrock by using a steel cable anchor rod directly according to the designed depth; for the hole forming of the steel rope anchor rod in the soil layer, the hole forming depth of the steel rope anchor rod is lengthened, the hole forming depth of the steel rope anchor rod is 5 cm-10 cm longer than that of the steel rope anchor rod, the steel rope anchor rod is guaranteed to be lower than the slope, and the pulling resistance of the steel rope anchor rod is larger than or equal to 50 KN.
Preferably, the grout in the grouting hole needs to be full in step S4, the steel cable anchor rod is moved up and down while grouting, when the grout overflows from the hole opening, grouting can be suspended, and secondary grouting is performed later; the early strength agent is added into the cement slurry to improve the early strength of the slurry.
Compared with the prior art, the invention has the beneficial effects that:
the transverse boundary rope is arranged at the top of the side slope, so that a fixed point is provided for the construction operation safety rope; the grid net is laid firstly, so that the danger of falling rocks induced in construction on the safety of construction workers, the safety of road driving and the safety of road pedestrians is avoided; by paving the grid net firstly, a construction acting point is provided for construction operators, and the construction efficiency is improved; the construction method has the advantages that the grid net is paved firstly, and then the steel cable anchor rods and the longitudinal and transverse supporting ropes are constructed, so that the exposure time of the construction surface is shortened, the influence on the normal operation of tourist attractions is avoided, the safety risk in the construction process is avoided, the economic benefit and the social benefit are improved, the construction method is simple, feasible, safe, reliable and novel, can be suitable for various complex environments, and has universal applicability.
Drawings
FIG. 1 is a flow chart of the construction process of the present invention;
fig. 2 is a schematic view of a flexible protection net according to the present invention.
The reference numbers in the figures illustrate: 1. a transverse border line; 2. a grid net; 3. steel cable anchor rod; 4. longitudinal and transverse support ropes; 5. a wire rope net; 6. sewing the rope; 7. slope surface line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1:
referring to fig. 1-2, a construction method of a flexible protective net for a complex environment side slope in a tourist attraction includes the following steps:
s1: clearing dangerous rocks on the slope: the dangerous stones and the pumice stones existing on the slope surface are horizontally pushed downwards along the slope top one by one, the dangerous stones and the pumice stones which possibly cause collapse, dangerous stone rolling and the like due to construction operation activities and threaten the safety of constructors are removed or temporarily processed on site (buried on site or piled in a pit), and if the collapse of the dangerous stones exceeds the protection capability of the system design or a large amount of maintenance work is possibly generated in the later period, the dangerous stones possibly collapsed on the slope surface are pre-reinforced (reinforced by steel bar anchor rods or single pier anchor cables) or manually broken in advance;
s2: installing a slope top transverse boundary rope 1: determining a hole position of an anchor rod along a transverse boundary rope 1 on the slope according to a protection area, drilling the anchor rod hole by using an air pick, inserting a steel rope anchor rod 3 and grouting, maintaining grouting for at least three days, installing the transverse boundary rope 1 on the top of the slope and tensioning, connecting and fixing two ends of the transverse boundary rope by using two steel rope clamps after tensioning, tensioning by using a small-tonnage hand-operated hoist, and installing the transverse boundary rope 1 to provide a fixing point for a construction operation safety rope;
s3: installing a grid net 2: the grid net 2 is horizontally pushed and paved from top to bottom along the slope roof, so that a construction acting point is provided for workers, and the threats caused by rockfall in construction to the safety of construction workers, the safety of road driving and the safety of road pedestrians are avoided;
s4: drilling and installing a steel rope anchor rod 3: horizontally pushing along the slope from top to bottom to form a hole by using a steel rope anchor rod, inserting a steel rope anchor rod 3 into a steel rope anchor rod hole, wherein the hole spacing of the steel rope anchor rod hole is 4.5m and the steel rope anchor rod hole is arranged in a square shape; grouting in the steel rope anchor rod hole, wherein the grout is M20 cement grout;
s5: installing longitudinal and transverse supporting ropes 4: installing longitudinal and transverse supporting ropes 4 along the steel rope anchor rods 3, wherein two ends of each supporting rope 4 need to be tensioned, two steel rope clamps are adopted for fixed connection after tensioning is finished, and the supporting ropes 4 are ensured to be tightly attached to the slope surface after installation is finished;
s6: installing and sewing the steel rope net 5: lay wire rope net 5 along domatic from last down, wire rope net 5 adopts the diameter to sew up for 8 mm's wire rope, sews up 6 edges of rope 4 directions of vertical and horizontal support during the sewing up and sew up and stretch-draw, sews up 6 both ends of rope and adopts two rope clamps to connect fixedly.
In the step S1, the dangerous rocks and pumice are completely removed, temporarily treated on site (buried on site or piled in a pit), pre-consolidated (reinforced anchor rods or single-pier anchor cables are adopted for reinforcement), and manually broken.
In the step S2, the boundary rope anchor rod hole is vertical to the slope surface, the steel rope anchor rod 3 is moved up and down while grouting is carried out, when grout overflows from the hole opening, grouting can be suspended, and secondary grout supplement is carried out later.
In the step S3, iron wires with the diameter of 2mm are used for stitching among the grid nets 2 and are bound according to the distance of 1m, the overlapping width among the grid nets 2 is not less than 5cm, and the iron wires with the diameter of 2mm are used for binding among the grid nets 2 and the slope top boundary ropes according to the distance of 1 m.
In the step S4, the hole position of the steel rope anchor rod 3 should be located at the sloping surface pit, and if the hole position of the sloping surface steel rope anchor rod 3 is higher, the pit needs to be chiseled manually, so as to ensure that the support rope is tightly attached to the ground.
In step S4, the wire rope anchor rod hole is preferably perpendicular to the slope and the angle between the wire rope anchor rod hole and the horizontal direction should be greater than or equal to 15 °.
In the step S4, a steel rope anchor rod in the bedrock is drilled, and drilling is directly carried out according to the design depth; and (3) forming holes in the steel rope anchor rods positioned in the soil layer by lengthening the hole forming depth of the steel rope anchor rods, wherein the hole forming depth of the steel rope anchor rods is 5-10 cm longer than the length of the steel rope anchor rods 3, so that the 3 ends of the steel rope anchor rods are lower than the slope surface, and the pulling resistance of the steel rope anchor rods 3 is more than or equal to 50 KN.
Step S4, the grout in the grouting hole needs to be full, the steel cable anchor rod 3 needs to be moved up and down while grouting, when the grout overflows from the hole opening, grouting can be suspended, and secondary grouting is carried out later; early strength agent is added into cement grout for grouting to improve early strength of the grout.
The invention provides a fixed point for a construction operation safety rope by installing a transverse boundary rope 1 at the top of a side slope; by paving the grid net 2, the danger of falling rocks induced in construction on the safety of construction workers, the safety of road driving and the safety of road pedestrians is avoided; by paving the grid net 2 firstly, a construction acting point is provided for construction operators, and the construction efficiency is improved; by paving the grid net 2 and constructing the steel rope anchor rods 3 and the longitudinal and transverse supporting ropes 4, the exposure time of a construction surface is shortened, the influence on the normal operation of a tourist attraction is avoided, the safety risk in the construction process is avoided, the economic benefit and the social benefit are improved, and the construction method is simple, easy, safe, reliable and novel, can be suitable for various complex environments, and has universal applicability.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A construction method of a flexible protective net for a complex environment side slope in a tourist attraction is characterized by comprising the following steps: the method comprises the following steps:
s1: clearing dangerous rocks on the slope: the dangerous stones and the pumice stones existing on the slope surface are cleaned one by one downwards along the top of the slope;
s2: installing a slope top transverse boundary rope (1): determining hole positions of anchor rods along a transverse boundary rope (1) on the slope according to the protection area, drilling the anchor rod holes by adopting an air pick, inserting a steel rope anchor rod (3) and grouting, installing and tensioning the transverse boundary rope (1) on the top of the slope, and connecting and fixing two ends of the tensioned transverse boundary rope (1) by using two steel rope clamps;
s3: installation of grid net (2): horizontally pushing and paving the grid net (2) from top to bottom along the top of the slope;
s4: drilling and installing a steel rope anchor rod (3): horizontally pushing along the slope from top to bottom to form a hole by using a steel rope anchor rod, and inserting a steel rope anchor rod (3) into the hole by using the steel rope anchor rod; grouting in the steel rope anchor rod hole forming process;
s5: installing longitudinal and transverse supporting ropes (4): a longitudinal and transverse supporting rope (4) is installed along the steel rope anchor rod (3), two ends of the supporting rope need to be tensioned, and after tensioning is finished, two steel rope clamps are adopted for fixed connection;
s6: installing and sewing a steel rope net (5): lay wire rope net (5) along domatic from last down, wire rope net (5) adopt wire rope to sew up, sew up rope (6) and sew up and stretch-draw along indulging horizontal support rope (4) direction during the sewing up, and it is fixed to adopt two rope clamps to sew up rope (6) both ends.
2. The construction method of the tourist attraction complex environment side slope flexible protective net according to claim 1, characterized in that: the dangerous rock and pumice cleaning in the step S1 adopts complete removal, on-site temporary treatment, pre-consolidation treatment and manual removal.
3. The construction method of the tourist attraction complex environment side slope flexible protective net according to claim 1, characterized in that: and (3) the boundary rope anchor rod hole in the step (S2) is perpendicular to the slope, the steel rope anchor rod (3) is moved up and down while grouting is carried out, grouting can be suspended when grout overflows from the hole, and secondary grout supplement is carried out later.
4. The construction method of the tourist attraction complex environment side slope flexible protective net according to claim 1, characterized in that: in the step S3, iron wires with the diameter of 2mm are used for stitching among the grid nets (2) to be bound according to the distance of 1m, the overlapping width among the grid nets (2) is not less than 5cm, and the iron wires with the diameter of 2mm are used for binding among the grid nets (2) and the slope top boundary ropes according to the distance of 1 m.
5. The construction method of the tourist attraction complex environment side slope flexible protective net according to claim 1, characterized in that: in the step S4, the hole position of the steel rope anchor rod (3) is located at a slope pit, and if the hole position of the slope steel rope anchor rod (3) is higher, the pit needs to be dug manually, so that the support rope is ensured to be tightly attached to the ground.
6. The construction method of the tourist attraction complex environment side slope flexible protective net according to claim 1, characterized in that: in step S4, the wire rope anchor rod hole is preferably perpendicular to the slope and the angle between the wire rope anchor rod hole and the horizontal direction should be greater than or equal to 15 °.
7. The construction method of the tourist attraction complex environment side slope flexible protective net according to claim 1, characterized in that: in the step S4, a steel rope anchor rod in the bedrock is drilled, and drilling is directly carried out according to the design depth; for the hole forming of the steel rope anchor rod in the soil layer, the hole forming depth of the steel rope anchor rod is lengthened, the hole forming depth of the steel rope anchor rod is 5 cm-10 cm longer than the length of the steel rope anchor rod (3), the steel rope anchor rod (3) is guaranteed to be lower than the slope, and the pulling resistance of the steel rope anchor rod (3) is more than or equal to 50 KN.
8. The construction method of the tourist attraction complex environment side slope flexible protective net according to claim 1, characterized in that: and step S4, the grout in the grouting hole needs to be full, the steel cable anchor rod (3) is moved up and down while grouting is carried out, when the grout overflows from the hole opening, grouting can be suspended, and secondary grouting is carried out later.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110906471.9A CN113482020A (en) | 2021-08-09 | 2021-08-09 | Construction method of flexible protective net for complex environment side slope in tourist attraction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110906471.9A CN113482020A (en) | 2021-08-09 | 2021-08-09 | Construction method of flexible protective net for complex environment side slope in tourist attraction |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07300820A (en) * | 1994-05-09 | 1995-11-14 | Tokyo Seiko Co Ltd | Close contact type protective construction method against falling rock and rope/net anchor structure thereof |
| CN105484174A (en) * | 2014-09-15 | 2016-04-13 | 五冶集团上海有限公司 | Slope anti-rockfall guard net and construction method thereof |
| CN108978682A (en) * | 2018-06-30 | 2018-12-11 | 中国水利水电第九工程局有限公司 | A kind of construction method of road slope active protecting net system |
| CN209353356U (en) * | 2018-11-13 | 2019-09-06 | 安平县万兆丝网制造有限公司 | A kind of massif side slope protective screen |
| CN110820771A (en) * | 2019-11-20 | 2020-02-21 | 四川省西南大地工程物探有限公司 | Structure and construction method of mountain side slope protective net |
| CN212223917U (en) * | 2020-04-20 | 2020-12-25 | 四川省商业建设有限责任公司 | Active protective net |
-
2021
- 2021-08-09 CN CN202110906471.9A patent/CN113482020A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07300820A (en) * | 1994-05-09 | 1995-11-14 | Tokyo Seiko Co Ltd | Close contact type protective construction method against falling rock and rope/net anchor structure thereof |
| CN105484174A (en) * | 2014-09-15 | 2016-04-13 | 五冶集团上海有限公司 | Slope anti-rockfall guard net and construction method thereof |
| CN108978682A (en) * | 2018-06-30 | 2018-12-11 | 中国水利水电第九工程局有限公司 | A kind of construction method of road slope active protecting net system |
| CN209353356U (en) * | 2018-11-13 | 2019-09-06 | 安平县万兆丝网制造有限公司 | A kind of massif side slope protective screen |
| CN110820771A (en) * | 2019-11-20 | 2020-02-21 | 四川省西南大地工程物探有限公司 | Structure and construction method of mountain side slope protective net |
| CN212223917U (en) * | 2020-04-20 | 2020-12-25 | 四川省商业建设有限责任公司 | Active protective net |
Non-Patent Citations (1)
| Title |
|---|
| 河南省地质学会, 中国大地出版社 * |
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Application publication date: 20211008 |