CN110158495A - A kind of railway in operation abrupt slope cutting high position crag is blocked system and its construction method - Google Patents
A kind of railway in operation abrupt slope cutting high position crag is blocked system and its construction method Download PDFInfo
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- CN110158495A CN110158495A CN201910431864.1A CN201910431864A CN110158495A CN 110158495 A CN110158495 A CN 110158495A CN 201910431864 A CN201910431864 A CN 201910431864A CN 110158495 A CN110158495 A CN 110158495A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 47
- 238000010276 construction Methods 0.000 title abstract description 16
- 239000011435 rock Substances 0.000 claims abstract description 36
- 210000003127 knee Anatomy 0.000 claims abstract description 31
- 230000035939 shock Effects 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 239000010410 layer Substances 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 230000003139 buffering effect Effects 0.000 claims description 9
- 239000002344 surface layer Substances 0.000 claims description 8
- 238000000280 densification Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000872 buffer Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 230000000703 anti-shock Effects 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 239000004575 stone Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0258—Retaining or protecting walls characterised by constructional features
- E02D29/0275—Retaining or protecting walls characterised by constructional features cast in situ
-
- 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
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
A kind of railway in operation abrupt slope cutting high position crag is blocked system and construction method, the success rate for abrupt slope cutting location high position rockfall of blocking is greatly improved, be easy to construct convenient for later maintenance, and work progress can be reduced to the greatest extent, railway operation is interfered.Including support system, shock resistance system, anti-more top system and automatic alarm device.Support system is made of T-type knee wall, antidumping anchor cable and sinker, T-type knee wall is along the elongated setting of railway in operation cutting crag section, upper part, which is leaned on to be formed between versant inner wall and cut slope slope surface, accommodates falling rocks space, the antidumping anchor cable is arranged along line direction interval, both ends are connect with T-type knee wall, cut slope rock anchorage respectively, and sinker is mounted on antidumping anchor cable.Shock resistance system is stratiform flexibility construct, is set in the exposed surface of T-type knee wall accommodating in falling rocks space.Anti- more top system is fixedly installed on the top of T-type knee wall, and automatic alarm device is mounted in anti-more top system.
Description
Technical field
The present invention relates to technical field of civil engineering, in particular to the rockfall of railway engineering is blocked engineering, especially suitable
The reinforcement engineering of high-order rockfall for railway in operation abrupt slope cutting.
Background technique
Rockfall is a kind of common geological disaster, is one of big geological disaster in mountain area three.Since falling rocks has high speed
Movement, HI high impact energy, it is multiple, specific region time of origin and place randomness, it is difficult to predict property and motion processes
The features such as complexity may cause interruption of communication and huge casualties and economic loss if do not administered.
Traditional management measure of rockfall mainly has: removing, support top reinforcing, stone falling channel, master's (quilt) move protective net, block stone
Fence (open cut tunnel, hangar tunnel) etc..But in the railway steep slope region for having opened operation, once the rockfall that discovery is high-order, is renovated different
Often difficult, traditional removing, support top reinforcing, stone falling channel, the dynamic protective net of master's (quilt) etc. generate railway operation in implementing engineering
Very big interference and security threat, in the steep location of landform, since personnel and machinery can not reach, these traditional measures are without reality
The condition applied, and the construction of hangar tunnel, open cut tunnel etc. is also very big to the interference of railway operation, and cost is high, therefore it is badly in need of a kind of construction
Simply, to railway operation system of interfering that small, impact resistance is high, the high-order rockfall of low cost is blocked.
Summary of the invention
It blocks system technical problem to be solved by the invention is to provide a kind of railway in operation abrupt slope cutting high position crag, with
The success rate for abrupt slope cutting location high position rockfall of blocking is greatly improved, be easy to construct is convenient for later maintenance, and can be maximum
The reduction work progress of degree interferes railway operation.
It is as follows that the present invention solves technical solution used by above-mentioned technology:
A kind of railway in operation abrupt slope cutting high position crag of the invention is blocked system, it is characterized in that: including support system, anti-
Impact system, anti-more top system and automatic alarm device；The support system is by T-type knee wall, antidumping anchor cable and sinker
It constitutes, T-type knee wall leans between versant inner wall and cut slope slope surface along the elongated setting of railway in operation cutting crag section, upper part
Formed accommodate falling rocks space, the antidumping anchor cable along line direction interval be arranged, both ends respectively with T-type knee wall, cutting side
The connection of slope rock anchorage, sinker are mounted on antidumping anchor cable；The shock resistance system is stratiform flexibility construct, is being accommodated
It is set in falling rocks space in the exposed surface of T-type knee wall；The anti-more top system is fixedly installed on the top of T-type knee wall,
Automatic alarm device is mounted in anti-more top system.
The T-type knee wall is reinforced concrete structure, is consolidated therewith including vertical supporting wall and inner end horizontally-supported
Plate, vertical supporting wall base bottom are placed on the slope foot platform of railway in operation cutting, and horizontal supporting plate outer end is placed in rock at plain stage of slope
In vivo, elevation of top surface is consistent with the first order plain stage of slope elevation of railway in operation cutting；The receiving falling rocks space is formed in
The cut slope slope surface of horizontally-supported plate top surface or more, vertical supporting wall lean between versant inner wall.
The horizontal supporting plate bottom surface and following cut slope slope surface, vertical supporting wall form lower part between versant inner wall
Space；The sinker is located in lower space, and antidumping anchor cable is fixedly connected with the outer segment anchor cable of sinker, inner segment anchor by one end
Rope is constituted, and outer segment anchor cable is solidly connected with vertical supporting joist anchor, inner segment anchor cable and the anchor connection of Rock mass stability rock-soil layer.
Another technical problem to be solved by this invention is to provide a kind of above-mentioned railway in operation abrupt slope cutting high position crag and blocks
The construction method of gear system.Method includes the following steps:
The construction method of system 1. a kind of railway in operation abrupt slope cutting high position crag is blocked, includes the following steps:
1. temporarily isolating net is arranged at railway in operation cut slope slope foot platform, the foundation pit of vertical supporting wall is excavated；
2. antidumping anchor cable of constructing, and sinker is installed in the exposed junction of its inner segment anchor cable；
3. formwork erection pours T-type knee wall, when casting, reserves the anchor hole of antidumping anchor cable on vertical supporting wall；
4. the outer segment anchor cable of antidumping anchor cable is worn after the strength of reinforced concrete of T-type knee wall reaches design strength
Anchor hole is crossed, and tensioning is carried out to antidumping anchor cable according to design prestressing force；
5. construct on horizontal supporting plate compliant impact resistant layer and buffering suface layer；
6. in vertical supporting wall fixedly-mounted steel column；
7. hanging the fixed double-deck interception early warning system between adjacent fashioned iron column；
8. fixing flexible draw cord at the top of various steel column, the end of flexible draw cord anchors into cutting by anchor (34)
In slope rock mass；
9. installing automatic alarm device in early warning system in each double-deck intercept.
The invention has the advantages that can be greatly reduced pair using the support system that T-steel tendon concrete structure forms
The excavation of cut slope, and structure is located at except limit, when construction, interfere railway operation small；Using property anti-impacting layer and buffering
The shock resistance system of surface layer composition, easy construction can not only prevent direct impact of the falling rocks to concrete support structure, moreover it is possible to
Absorb certain impact energy；The anti-setting for more pushing up system, can be effectively prevented rock-fall impact block system when splash, from top
Portion enters the risk of railway clearance；The pouch-type structure that this blocks system and cut slope collectively constitutes, greatly improves and blocks
Success rate is kept off, and the storage organization of falling rocks can be doubled as, the later period can be entered by plain stage of slope accommodates the periodic cleaning of falling rocks space；
There is the system railway operation to interfere, and small, success rate of blocking is high, impact resistance is high, safe and reliable, easy to maintain and low cost
The characteristics of, the conventional regulation method for scientifically and rationally solving railway abrupt slope cutting location high position rockfall in operation is difficult to reality
Apply, work progress is big to railway operation interference, intercepts the technical problems such as success rate is low, later maintenance is difficult, in mountain railway
Construction has great promotional value.
Detailed description of the invention
This specification includes following six width attached drawing:
Fig. 1 is that a kind of railway in operation abrupt slope cutting high position crag is blocked system schematic in the embodiment of the present invention；
Fig. 2 is that a kind of railway in operation abrupt slope cutting high position crag of the present invention is blocked the main view of sinker in system；
Fig. 3 is that a kind of railway in operation abrupt slope cutting high position crag of the present invention is blocked the side view of sinker in system；
Fig. 4 is that a kind of railway in operation abrupt slope cutting high position crag of the present invention is blocked the partial enlarged view of sinker in system；
Fig. 5 is that a kind of railway in operation abrupt slope cutting high position crag of the present invention is blocked the double-deck plane for intercepting early warning system in system
Figure；
Fig. 6 is that a kind of railway in operation abrupt slope cutting high position crag of the present invention is blocked the partial enlargement of secondary densification network in system
Figure.
Component, toponym and corresponding label are shown in figure: railway in operation cutting A, Dangerous Rock Body B, accommodating falling rocks sky
Between C, lower space D, angle α, vertical supporting wall 11, horizontal supporting plate 12, antidumping anchor cable 13, sinker 14, cyclic structure
14a, stainless steel buckle 14b, compliant impact resistant layer 21, buffering surface layer 22, fashioned iron column 31, it is double-deck intercept early warning system 32, it is main by
Power net 32a, pair densification network 32b flexible draw cord 33, anchor 34.
Specific embodiment
Ben Faken is further illustrated with reference to the accompanying drawings and examples.
Referring to Fig.1, a kind of railway in operation abrupt slope cutting high position crag system of blocking of the invention includes support system, anti-impact
Hit system, anti-more top system and automatic alarm device.The support system is by T-type knee wall, antidumping anchor cable 13 and sinker
14 are constituted, and T-type knee wall is along the elongated setting of railway in operation cutting A crag section, and upper part is by versant inner wall and cut slope slope surface
Between formed accommodate falling rocks space C, the antidumping anchor cable 13 along line direction interval be arranged, both ends respectively with T-type knee wall,
The connection of cut slope rock anchorage, sinker 14 are mounted on antidumping anchor cable 13.The support system can be greatly reduced and satisfy the need
The excavation of moat side slope, and structure is located at except limit, when construction, interfere railway operation small.The shock resistance system is that stratiform is soft
Property construct, accommodate falling rocks space C in be set in the exposed surface of T-type knee wall, easy construction can not only prevent falling rocks
Direct impact to concrete support structure, moreover it is possible to absorb certain impact energy.The anti-more top system is fixedly installed on T-type branch
The top of buttress, can be effectively prevented rock-fall impact block system when splash, the risk of railway clearance is entered from top.It should
The pouch-type structure that system of blocking and cut slope collectively constitute greatly improves success rate of blocking, and can double as falling rocks
Storage organization, the later period can be entered by plain stage of slope accommodate the C periodic cleaning of falling rocks space.Automatic alarm device is mounted on anti-get over
In the system of top, when falling rocks, which touches, intercepts warning network, meeting automatic alarm notice railroad maintenance personnel are handled.
Referring to Fig.1, the T-type knee wall is reinforced concrete structure, including vertical supporting wall 11 and inner end consolidate therewith
Horizontal supporting plate 12,11 substrate of vertical supporting wall is placed on the slope foot platform of railway in operation cutting A, 12 outer end of horizontal supporting plate
It is placed at plain stage of slope in rock mass, elevation of top surface is consistent with the first order plain stage of slope elevation of railway in operation cutting A.The appearance
The falling rocks space C that receives forms the cut slope slope surface in 12 top surface of horizontal supporting plate or more, vertical supporting wall 11 leans on versant inner wall
Between.Under 12 bottom surface of horizontal supporting plate and following cut slope slope surface, vertical supporting wall 11 are formed between versant inner wall
Portion space D.In general, the metope ratio of slope of vertical supporting wall 11 is 1:0.1~1:0.2, vertical supporting wall 11, horizontal supporting plate
12 concrete grade is not less than C35, and thickness is not less than 1.5m.
Referring to Fig.1, for convenient for construction, the sinker 14 is located in lower space D, and antidumping anchor cable 13 is fixed by one end
Connect the outer segment anchor cable of sinker 14, inner segment anchor cable is constituted, outer segment anchor cable and 11 anchor connection of vertical supporting wall, inner segment anchor cable with
Rock mass stability rock-soil layer anchor connection.
Referring to Figure 2 to Figure 4, the main body of the sinker 14 is the cyclic structure 14a made of wirerope, and uses 8 words
The stainless steel buckle 14b of shape is fixed.
Referring to Fig.1, the shock resistance system is made of compliant impact resistant layer 21, buffering surface layer 22, compliant impact resistant layer 21
It being set on horizontal supporting plate 12, vertically knee wall 11 by versant inner wall extends upwardly to the top of T-type knee wall in outside,
It buffers surface layer 22 to be fixedly installed along the surface of compliant impact resistant layer 21, thickness is not less than 20cm.The compliant impact resistant layer 21
It is formed using bagged sand boulder masonry, buffering surface layer 22 uses resilient rubbber cushion.The shock resistance system.
Referring to Fig.1, the anti-more top system is made of fashioned iron column 31, the double-deck interception early warning system 32 and flexible draw cord 33,
Fashioned iron column 31 is spaced the top for being in a row set to vertical supporting wall 11, and axis and 11 top surface of vertical supporting wall form angle α,
45 ° of 60 ° of < α <.The double-deck interception early warning system 32, which is hung, to be fixed between adjacent amphitypy steel column 31, the automatic report of installation thereon
Alarm device.Described 33 one end of flexible draw cord is connected to the top of fashioned iron column 31, and the other end is anchored in road by anchor 34
In moat slope rock mass.
Referring to figure 5 and figure 6, it is described it is double-deck intercept early warning system 32 by main stress net 32a and secondary densification network 32b is compound constitutes,
The wherein ring network architectures that main stress net 32a uses Fourth Ring to be nested, monocycle diameter are not more than 350mm, use diameter for φ 3.0mm
Steel wire, intensity >=1370MPa；Secondary densification network 32b uses regular hexagon structure, mesh 8~10mm of side length, wire side steel wire diameter
φ 2.2mm, 350~550MPa of wire side tensile strength of wire.
As a kind of typical allocation plan, the use of fashioned iron column 31 section steel manufacture of HW150 × 150, spacing 6~
8m；Wirerope of the flexible draw cord 33 using diameter not less than 20mm makes, and the anchoring ability of single anchor 34 is not low
In 200kN.
Referring to Fig.1, a kind of railway in operation abrupt slope cutting high position crag of the present invention is blocked the construction method of system, including as follows
Step:
1. temporarily isolating net is arranged at railway in operation cutting A side slope slope foot platform, the foundation pit of vertical supporting wall 11 is excavated；
2. antidumping anchor cable 13 of constructing, and sinker 14 is installed in the exposed junction of its inner segment anchor cable；
3. formwork erection pours T-type knee wall, when casting, reserves the anchor hole of antidumping anchor cable 13 on vertical supporting wall 11；
4. after the strength of reinforced concrete of T-type knee wall reaches design strength, by the outer segment anchor cable of antidumping anchor cable 13
Tensioning is carried out to antidumping anchor cable 13 across anchor hole, and according to design prestressing force；
5. construct on horizontal supporting plate 12 compliant impact resistant layer 21 and buffering suface layer 22；
6. in 11 fixedly-mounted steel column 31 of vertical supporting wall；
7. hanging the fixed double-deck interception early warning system 32 between adjacent fashioned iron column 31；
8. fixing flexible draw cord 33 at the top of various steel column 31, the end of flexible draw cord 33 is anchored by anchor 34
In cut slope rock mass；
9. installing automatic alarm device in early warning system 32 in each double-deck intercept.
The present invention has small railway operation interference, success rate of blocking height, impact resistance high, safe and reliable, easy to maintain
And the characteristics of low cost, scientifically and rationally solve the conventional regulation method of railway abrupt slope cutting location high position rockfall in operation
Be difficult to carry out, work progress is big to railway operation interference, intercepts the technical problems such as success rate is low, later maintenance is difficult, in mountain area
The construction of railway has great promotional value.
The above only explain through diagrams a kind of railway in operation abrupt slope cutting high position crag of the present invention block system and its
Some principles of construction method are not intended to for the present invention being confined in shown and described specific structure and the scope of application, therefore
All all corresponding modifications that may be utilized and equivalent, belong to the applied the scope of the patents of the present invention.
Claims (10)
- The system 1. a kind of railway in operation abrupt slope cutting high position crag is blocked, it is characterized in that: include support system, shock resistance system, It is anti-more to push up system and automatic alarm device；The support system is by T-type knee wall, antidumping anchor cable (13) and sinker (14) structure At, T-type knee wall along the elongated setting of railway in operation cutting (A) crag section, upper part by versant inner wall and cut slope slope surface it Between formed accommodate falling rocks space (C), the antidumping anchor cable (13) along line direction interval be arranged, both ends respectively with T-type support Wall, the connection of cut slope rock anchorage, sinker (14) are mounted on antidumping anchor cable (13)；The shock resistance system is stratiform Flexible construct is set in the exposed surface of T-type knee wall accommodating in falling rocks space (C)；The anti-more top system fixation is set It is placed in the top of T-type knee wall, automatic alarm device is mounted in anti-more top system.
- The system 2. a kind of railway in operation abrupt slope cutting high position crag as described in claim 1 is blocked, it is characterized in that: the T-type branch Buttress is reinforced concrete structure, vertical to prop up including the horizontal supporting plate (12) that vertical supporting wall (11) and inner end consolidate therewith Buttress (11) substrate is placed on the slope foot platform of railway in operation cutting (A), and horizontal supporting plate (12) outer end is placed at plain stage of slope In rock mass, elevation of top surface is consistent with the first order plain stage of slope elevation of railway in operation cutting (A)；The receiving falling rocks space (C) it is formed in the cut slope slope surface of horizontal supporting plate (12) top surface or more, vertical supporting wall (11) leans between versant inner wall.
- The system 3. a kind of railway in operation abrupt slope cutting high position crag as claimed in claim 2 is blocked, it is characterized in that: the horizontal branch Fagging (12) bottom surface and following cut slope slope surface, vertical supporting wall (11) form lower space (D) between versant inner wall；Institute It states sinker (14) to be located in lower space (D), antidumping anchor cable (13) is fixedly connected with the outer segment anchor of sinker (14) by one end Rope, inner segment anchor cable are constituted, outer segment anchor cable and vertical supporting wall (11) anchor connection, and inner segment anchor cable and Rock mass stability rock-soil layer anchor Connection.
- The system 4. a kind of railway in operation abrupt slope cutting high position crag as claimed in claim 3 is blocked, it is characterized in that: the sinker (14) main body is the cyclic structure made of wirerope (14a), and fixed using the stainless steel buckle of 8-shaped (14b).
- The system 5. a kind of railway in operation abrupt slope cutting high position crag as described in claim 2 one is blocked, it is characterized in that: described perpendicular It is 1:0.1~1:0.2, vertical supporting wall (11), concrete of horizontal supporting plate (12) etc. to the metope ratio of slope of knee wall (11) Grade is not less than C35, and thickness is not less than 1.5m.
- The system 6. a kind of railway in operation abrupt slope cutting high position crag as claimed in claim 2 is blocked, it is characterized in that: the shock resistance System is made of compliant impact resistant layer (21), buffering surface layer (22), and compliant impact resistant layer (21) is set to horizontal supporting plate (12) On, vertically knee wall (11) leans on versant inner wall to extend upwardly to the top of T-type knee wall in outside, buffers surface layer (22) along soft Property anti-impacting layer (21) surface fixed setting, thickness be not less than 20cm.
- The system 7. a kind of railway in operation abrupt slope cutting high position crag as claimed in claim 6 is blocked, it is characterized in that: described flexible anti- Shock ply (21) is formed using bagged sand boulder masonry, and buffering surface layer (22) uses resilient rubbber cushion.
- The system 8. a kind of railway in operation abrupt slope cutting high position crag as claimed in claim 2 is blocked, it is characterized in that: described prevent more pushing up System is made of fashioned iron column (31), double-deck interception early warning system (32) and flexible draw cord (33), and fashioned iron column (31) interval is in a row It is set to the top of vertical supporting wall (11), axis and vertical supporting wall (11) top surface form angle α, 45 ° of 60 ° of < α <；Institute State it is double-deck intercept early warning system (32) and hang be fixed between adjacent amphitypy steel column (31), automatic alarm device is installed thereon；Institute The top that flexible draw cord (33) one end is connected to fashioned iron column (31) is stated, the other end is anchored in cutting side by anchor (34) In the rock mass of slope；Wirerope of the flexible draw cord (33) using diameter not less than 20mm makes, the anchor of single anchor (34) Gu ability is not less than 200kN.
- The system 9. a kind of railway in operation abrupt slope cutting high position crag as claimed in claim 8 is blocked, it is characterized in that: the fashioned iron is vertical Column (31) uses the section steel manufacture of HW150 × 150,6~8m of spacing；Double-deck intercept early warning system (32) are by main stress net (32a) With secondary densification network (32b) compound composition, the ring network architectures that wherein main stress net (32a) uses Fourth Ring to be nested, monocycle diameter is not Greater than 350mm, use diameter for the steel wire of φ 3.0mm, intensity >=1370MPa, secondary densification network (32b) uses regular hexagon knot Structure, mesh 8~10mm of side length, wire side steel wire diameter φ 2.2mm, 350~550MPa of wire side tensile strength of wire.
- The side of constructing of system 10. a kind of railway in operation abrupt slope cutting high position crag as described in claim 1 to 9 any one is blocked Method includes the following steps:1. temporarily isolating net is arranged at railway in operation cutting (A) side slope slope foot platform, the foundation pit of vertical supporting wall (11) is excavated；2. constructing antidumping anchor cable (13), and sinker (14) are installed in the exposed junction of its inner segment anchor cable；3. formwork erection pours T-type knee wall, when casting, reserves the anchor hole of antidumping anchor cable (13) on vertical supporting wall (11)；4. the outer segment anchor cable of antidumping anchor cable (13) is worn after the strength of reinforced concrete of T-type knee wall reaches design strength Anchor hole is crossed, and tensioning is carried out to antidumping anchor cable (13) according to design prestressing force；5. construct on horizontal supporting plate (12) compliant impact resistant layer (21) and buffering suface layer (22)；6. in vertical supporting wall (11) fixedly-mounted steel column (31)；7. hanging fixed double-deck interception early warning system (32) between adjacent fashioned iron column (31)；8. at the top of various steel column (31) fixed flexible draw cord (33), the end of flexible draw cord (33) passes through anchor (34) It anchors into cut slope rock mass；9. installing automatic alarm device on early warning system (32) in each double-deck intercept.
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| CN201910431864.1A CN110158495A (en) | 2019-05-22 | 2019-05-22 | A kind of railway in operation abrupt slope cutting high position crag is blocked system and its construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117286813A (en) * | 2023-11-24 | 2023-12-26 | 湖南工程学院 | Flexible energy-absorbing type passive falling stone prevention device |
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| JP2006097274A (en) * | 2004-09-28 | 2006-04-13 | Nihon Samicon Co Ltd | Shock absorbing wire structure and shock absorbing structure using the structure |
| JP5666035B1 (en) * | 2014-02-27 | 2015-02-04 | 株式会社プロテックエンジニアリング | Protective fence |
| CN104674686A (en) * | 2015-02-15 | 2015-06-03 | 三峡大学 | Side slope rockfall cushioning and protection system |
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| CN105569059A (en) * | 2016-02-29 | 2016-05-11 | 中铁隧道集团有限公司 | Passive protective net and installation method thereof |
| CN108374358A (en) * | 2018-05-09 | 2018-08-07 | 中铁二院工程集团有限责任公司 | A kind of rockfall is passively blocked construction |
| CN210482095U (en) * | 2019-05-22 | 2020-05-08 | 中铁二院工程集团有限责任公司 | High-order dangerous rock system of blocking of operation railway abrupt slope cutting |
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| JP5666035B1 (en) * | 2014-02-27 | 2015-02-04 | 株式会社プロテックエンジニアリング | Protective fence |
| CN104674686A (en) * | 2015-02-15 | 2015-06-03 | 三峡大学 | Side slope rockfall cushioning and protection system |
| CN104805850A (en) * | 2015-05-08 | 2015-07-29 | 中铁工程设计咨询集团有限公司 | Vertex-aligning buttress balancing plate type cutting supporting block device |
| CN105569059A (en) * | 2016-02-29 | 2016-05-11 | 中铁隧道集团有限公司 | Passive protective net and installation method thereof |
| CN108374358A (en) * | 2018-05-09 | 2018-08-07 | 中铁二院工程集团有限责任公司 | A kind of rockfall is passively blocked construction |
| CN210482095U (en) * | 2019-05-22 | 2020-05-08 | 中铁二院工程集团有限责任公司 | High-order dangerous rock system of blocking of operation railway abrupt slope cutting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117286813A (en) * | 2023-11-24 | 2023-12-26 | 湖南工程学院 | Flexible energy-absorbing type passive falling stone prevention device |
| CN117286813B (en) * | 2023-11-24 | 2024-06-11 | 湖南工程学院 | Flexible energy-absorbing type passive falling stone prevention device |
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