CN110158620B - High-level landslide comprehensive protection system and construction method - Google Patents
High-level landslide comprehensive protection system and construction method Download PDFInfo
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- CN110158620B CN110158620B CN201910383488.3A CN201910383488A CN110158620B CN 110158620 B CN110158620 B CN 110158620B CN 201910383488 A CN201910383488 A CN 201910383488A CN 110158620 B CN110158620 B CN 110158620B
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- 238000010276 construction Methods 0.000 title claims abstract description 14
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 43
- 238000003860 storage Methods 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 230000000452 restraining effect Effects 0.000 claims abstract description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 17
- 230000002265 prevention Effects 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000007405 data analysis Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 238000012806 monitoring device Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 2
- 239000010959 steel Substances 0.000 claims 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
- E01F7/045—Devices specially adapted for protecting against falling rocks, e.g. galleries, nets, rock traps
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
A comprehensive protection system and a construction method for high-level landslide are provided, so that the high-level landslide is effectively intercepted, the problem that the high-level landslide in high-cold high-altitude complex and difficult mountain areas is difficult to treat is solved, and the safety of line engineering is ensured. The high-level landslide comprehensive protection system comprises: the energy dissipation system is arranged on the slope surface below the high-level landslide and is used for preventing the sliding body from moving or slowing down the moving speed of the sliding body; the interception system is arranged in the middle zone between the line engineering and the energy dissipation system, exposes the ground line to a certain height and is used for restraining the movement of the sliding body and providing a storage space for the residual sliding body; the early warning system is arranged outside the limit of the side close to the slope of the line engineering and in the high-level landslide, and is used for monitoring the condition of the high-level landslide and giving an alarm when part of the landslide passes through the interception system.
Description
Technical Field
The invention relates to a landslide comprehensive treatment project, in particular to a high-level landslide comprehensive protection system and a construction method thereof.
Background
The complex and difficult mountain area has a large amount of high-level landslide, and disasters such as rushing down stream, burying or chain type are easily generated under the action of earthquake, long-term rainfall or heavy rain, so that great property loss and social influence are caused. Most of the routes of the Tibetan railway in planning are exactly located in complicated and difficult mountain areas with high altitudes and high cold, and are restricted by factors such as steep terrain, inconvenient traffic and the like, so that conventional landslide in-situ remediation thought and technical means are difficult to realize, and a new prevention and control thought needs to be expanded.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a comprehensive protection system for the high-level landslide, so as to effectively intercept the high-level landslide, solve the problem that the high-level landslide in the high-cold high-altitude complex and difficult mountain area is difficult to treat, and ensure the safety of line engineering.
The technical scheme adopted for solving the technical problems is as follows:
the invention relates to a high-level landslide comprehensive protection system, which is characterized by comprising the following components: the energy dissipation system is arranged on the slope surface below the high-level landslide and is used for preventing the sliding body from moving or slowing down the moving speed of the sliding body; the interception system is arranged in the middle zone between the line engineering and the energy dissipation system, exposes the ground line to a certain height and is used for restraining the movement of the sliding body and providing a storage space for the residual sliding body; the early warning system is arranged outside the limit of the side close to the slope of the line engineering and in the high-level landslide, and is used for monitoring the condition of the high-level landslide and giving an alarm when part of the landslide passes through the interception system;
the energy dissipation system consists of a strip-shaped energy dissipation forest and an energy dissipation tenon, and the energy dissipation tenon is positioned below the energy dissipation forest;
the energy dissipation forest is composed of reinforced concrete dendritic energy dissipation bodies which are arranged on the strip-shaped ground in a plum blossom shape, each reinforced concrete dendritic energy dissipation body is provided with a vertical main limb and a fork limb fixedly connected to the top end of the main limb, the lower part of the main limb is buried below the ground line by a certain depth, and the impact force of a part of sliding body is counteracted by the aid of the strength of a rock-soil body below the ground line; the fork limbs are of a space three-dimensional limb structure, and form a triangular support with the ground under the impact of the sliding body.
The invention provides a construction method of the high-level landslide comprehensive protection system, which comprises the following steps:
(1) installing and setting an early warning system;
(2) constructing an energy dissipation system;
(3) the construction interception system is used for completing the establishment of a comprehensive prevention and control system of the high-level landslide;
(4) and (5) constructing line engineering.
The invention has the advantages that the movement of the sliding body is blocked or the movement speed of the sliding body is slowed down by the banded energy dissipation system, the movement of the sliding body is restrained by the interception system, a storage space is provided for the residual sliding body, and when part of the sliding body passes over the interception system, an alarm is sent out by the early warning system; the sliding bodies are subjected to energy dissipation through the energy dissipation system and generate a residual accumulation effect of the sliding bodies, the lower sliding bodies are accumulated on the strip-shaped slope where the energy dissipation system is located, so that the number of the sliding bodies reaching the interception system is reduced to the greatest extent, and the probability that the sliding bodies pass through the interception system is reduced; the method can effectively avoid landslide endangering road operation safety, avoid serious casualties, and effectively solve the problem that high-level landslide in high-altitude complex and difficult mountainous areas is difficult to treat.
Drawings
The specification includes the following three drawings:
FIG. 1 is a schematic diagram of a high-level landslide integrated protection system of the present invention;
FIG. 2 is an elevation view of an energy dissipating forest in the high-level landslide comprehensive protection system of the invention;
fig. 3 is a plan view of an energy dissipating forest in the high-level landslide comprehensive protection system of the invention.
The components and corresponding indicia are shown: the system comprises a line engineering 10, an interception system 20, an energy dissipation system 30, an early warning system 40, a high-level landslide body A, a storage space B and a ground line D.
Description of the embodiments
The invention will be further described with reference to the drawings and examples.
Referring to fig. 1, the high-level landslide comprehensive protection system of the invention comprises: the energy dissipation system 30 is arranged on the slope surface below the high-level landslide A and is used for preventing the movement of the sliding body or slowing down the movement speed of the sliding body; the interception system 20 is arranged in the middle zone between the line engineering 10 and the energy dissipation system 30, exposes the ground line C to a certain height and is used for restraining the movement of the sliding body and providing a storage space B for the residual sliding body; the early warning system 40 is arranged outside the limit of the line engineering 10 on the side close to the slope and in the high-level landslide A, and is used for monitoring the condition of the high-level landslide A and giving an alarm when part of the landslide passes through the interception system 20.
Referring to fig. 2 and 3, the energy dissipating system 30 is composed of a strip-shaped energy dissipating forest 31 and an energy dissipating tenon 32, and the energy dissipating tenon 32 is located below the energy dissipating forest 31. The energy dissipating forest 31 can be a natural forest belt or a prefabricated reinforced concrete dendritic energy dissipating body. Referring to fig. 2, the energy dissipating forest 31 is composed of reinforced concrete dendritic energy dissipating bodies arranged in a quincuncial shape on a belt-shaped ground, each of the reinforced concrete dendritic energy dissipating bodies has a main limb 311 erected and a fork limb 322 fixedly connected to the top end thereof, the lower part of the main limb 311 is buried in a certain depth below a ground line C, and the impact force of a part of the sliding body is counteracted by the force of a rock-soil body below the ground line C. The fork limbs 322 are of a space three-dimensional limb structure, and form a triangular support with the ground under the impact of a sliding body. The main limb 311 has good ductility, does not fracture in a brittle manner under impact of the slider, and provides a pulling action for the fork limb 322 at the top thereof. The sliding bodies are subjected to energy dissipation through the energy dissipation forest 31 and the energy dissipation tenons 32, and a residual accumulation effect of the sliding bodies is generated, the lower sliding bodies are accumulated on the strip-shaped slope where the energy dissipation forest 31 and the energy dissipation tenons 32 are positioned, so that the number of the sliding bodies reaching the interception system 20 is reduced to the greatest extent, and the probability that the sliding bodies pass through the interception system 20 is reduced.
Referring to fig. 3, the energy dissipating forest 31 is preferably arranged in a quincuncial pattern to fully exert a blocking effect, and the sliding body passes through the gaps in the forest. The air leakage rate xi of the energy dissipating forest 31 is determined by the following formula:
ξ=2ηD 2 /(SH)
wherein: d is the diameter of the main limb, H is the height of the main limb, S is the distance between adjacent main limbs, eta is a correction coefficient, and eta is generally 0.7-0.9.
Referring to fig. 1, the energy dissipating tenons 32 are generally formed by using a triangular pyramid of reinforced concrete with a certain volume and weight, and are arranged in a quincuncial shape on a belt-shaped ground.
Referring to fig. 1, the interception system 20 is composed of a supporting interception structure 21 and a buffer structure 22, and the buffer structure 22 is fixedly arranged on the back surface of the supporting interception structure 21 and faces the energy dissipation system 30. In general, the retaining and intercepting structure 21 is composed of reinforced concrete piles disposed at a lateral interval and a wire rope intercepting net hung between adjacent reinforced concrete piles, and the lower portion of each reinforced concrete pile is buried below the ground line C by a certain depth. The buffer structure 22 is an elastomer and is hung on the wire rope intercepting net and the rear wall of the reinforced concrete pile.
The early warning system 40 comprises a video monitoring system, a small weather monitoring device, a data analysis platform and an early warning platform which are arranged outside the limit of the line engineering 10 on the side close to the slope, and a displacement sensor buried in the high-level landslide A.
The invention discloses a construction method of a high-level landslide comprehensive protection system, which comprises the following steps:
(1) installing a set-up early warning system 40;
(2) constructing an energy dissipation system 30;
(3) the construction interception system 20 is used for completing the establishment of a comprehensive high-level landslide prevention and control system;
(4) the line work 10 is constructed.
According to the invention, the banded energy dissipation system 30 is used for preventing the sliding body from moving or slowing down the moving speed of the sliding body, the interception system 20 is used for preventing the sliding body from moving and providing a storage space for residual sliding bodies, and when part of the sliding body passes over the interception system, the early warning system 40 is used for giving an alarm, so that the road operation safety is prevented from being endangered by landslide, the occurrence of serious casualties is avoided, and the problem that high-level landslide in high-cold high-altitude complex and difficult mountain areas is difficult to treat is effectively solved. The construction of the line engineering 10 is performed after the high-level landslide comprehensive prevention and control system is established, so that the safety of the construction can be ensured.
The foregoing is provided by way of illustration of a general high-level landslide protection system and method of construction and is not intended to limit the invention to the particular construction and application of the system, but is intended to cover all modifications and equivalents of the system that may be resorted to, falling within the scope of the invention as defined by the appended claims.
Claims (8)
1. A high-level landslide comprehensive protection system is characterized by comprising: the energy dissipation system (30) is arranged on the slope surface below the high-level landslide (A) and is used for preventing the movement of the sliding body or slowing down the movement speed of the sliding body; the interception system (20) is arranged in the middle zone between the line engineering (10) and the energy dissipation system (30), exposes the ground line (C) to a certain height and is used for restraining the movement of the sliding body and providing a storage space (B) for the residual sliding body; the early warning system (40) is arranged outside the limit of the line engineering (10) near the side of the slope and in the high-level landslide (A) and is used for monitoring the condition of the high-level landslide (A) and giving an alarm when part of the landslide passes over the interception system (20);
the energy dissipation system (30) is composed of a strip-shaped energy dissipation forest (31) and an energy dissipation tenon (32), and the energy dissipation tenon (32) is positioned below the energy dissipation forest (31);
the energy dissipation forest (31) is composed of reinforced concrete dendritic energy dissipation bodies which are arranged on the strip-shaped ground in a plum blossom shape, each reinforced concrete dendritic energy dissipation body is provided with a vertical main limb (311) and a fork limb (322) fixedly connected to the top end of the main limb (311), the lower part of the main limb (311) is embedded into a certain depth below a ground line (C), and the impact force of a part of sliding bodies is counteracted by the strength of a rock-soil body below the ground line (C); the fork limbs (322) are of a space three-dimensional limb structure, and form a triangular support with the ground under the impact of the sliding body.
2. The high-level landslide comprehensive protection system of claim 1, which is characterized in that: the air leakage rate xi of the energy dissipation forest (31) is determined by the following formula:
ξ=2ηD 2 /(SH)
wherein: d is the diameter of the main limb, H is the height of the main limb, S is the distance between adjacent main limbs, and eta is the correction coefficient.
3. The high-level landslide comprehensive protection system of claim 1, which is characterized in that: the energy dissipation forest (31) is a natural forest belt.
4. The high-level landslide comprehensive protection system of claim 1, which is characterized in that: the energy dissipation tenons (32) are reinforced concrete triangular pyramids and are distributed on the banded ground in plum blossom shape.
5. The high-level landslide comprehensive protection system of claim 1, which is characterized in that: the interception system (20) is composed of a supporting interception structure (21) and a buffer structure (22), and the buffer structure (22) is fixedly arranged on the back surface of the supporting interception structure (21) and faces the energy dissipation system (30).
6. The high-level landslide comprehensive protection system of claim 5, wherein the system comprises the following components: the supporting and blocking interception structure (21) consists of reinforced concrete piles arranged transversely at intervals and steel cable interception nets hung between adjacent reinforced concrete piles, and the lower parts of the reinforced concrete piles are embedded into a certain depth below a ground line (C); the buffer structure (22) is an elastomer and is hung on the steel cable interception net and the rear wall of the reinforced concrete pile.
7. The high-level landslide comprehensive protection system of claim 1, which is characterized in that: the early warning system (40) comprises a video monitoring system, a small weather monitoring device, a data analysis platform and an early warning platform which are arranged outside the limit of the line engineering (10) close to the slope side, and a displacement sensor buried in the high-level landslide (A).
8. The construction method of the high-level landslide comprehensive protection system according to any one of claims 1 to 7, comprising the following steps:
(1) installing an early warning system (40);
(2) constructing an energy dissipation system (30);
(3) the construction interception system (20) is used for completing the establishment of a high-level landslide comprehensive prevention and control system;
(4) and (3) constructing a line engineering (10).
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| CN110158620A CN110158620A (en) | 2019-08-23 |
| CN110158620B true CN110158620B (en) | 2024-03-22 |
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| CN111475978B (en) * | 2020-04-03 | 2021-02-12 | 中国地质科学院地质力学研究所 | Prediction method for damage engineering protection effect after high-position remote landslide |
| CN111809537B (en) * | 2020-07-22 | 2021-12-07 | 中国科学院、水利部成都山地灾害与环境研究所 | Design method of collapse landslide blocking energy dissipation pile array |
| CN112241603B (en) * | 2020-10-28 | 2021-05-14 | 中国地质科学院地质力学研究所 | Numerical simulation method for high-order landslide impact scraping and underlayer converging process |
| CN113026587A (en) * | 2021-03-25 | 2021-06-25 | 新疆铁道勘察设计院有限公司 | Comprehensive prevention and control method for road edge avalanche disaster |
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