CN104912088A - Slope protection structure and construction method thereof - Google Patents

Slope protection structure and construction method thereof Download PDF

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Publication number
CN104912088A
CN104912088A CN201410085470.2A CN201410085470A CN104912088A CN 104912088 A CN104912088 A CN 104912088A CN 201410085470 A CN201410085470 A CN 201410085470A CN 104912088 A CN104912088 A CN 104912088A
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CN
China
Prior art keywords
pushing
construction
slag
steel
slope
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410085470.2A
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Chinese (zh)
Inventor
童耀
刘宏生
周伟
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GEZHOUBA GROUP FOUNDATION ENGINEERING Co Ltd
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GEZHOUBA GROUP FOUNDATION ENGINEERING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by GEZHOUBA GROUP FOUNDATION ENGINEERING Co Ltd filed Critical GEZHOUBA GROUP FOUNDATION ENGINEERING Co Ltd
Priority to CN201410085470.2A priority Critical patent/CN104912088A/en
Publication of CN104912088A publication Critical patent/CN104912088A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a slope protection structure; and a steel structure slag stop curtain wall, a slag stop bank and a flexible protection net are arranged on a slope from top to bottom. A construction method of the slope protection structure comprises the following steps: (1) construction of the steel structure slag stop curtain wall: the steel structure slag stop curtain wall is supported and fixed on a slope surface at a position far from the outer side of a digging edge line by 1-2 m in a manner of inner side traction, outer side ejection and ground anchor anchoring; (2) construction of the slag stop bank: the slag stop bank is arranged on the slope at a position far from the lower side of the steel structure slag stop curtain wall by 1.5-3 m in a manner of drilling and rib insertion; and (3) construction of the flexible protection net: the flexible protection net is arranged on the slope at a position far from the lower side of the steel structure slag stop curtain wall by 12-18 m. The slope protection structure and the construction method thereof, provided by the invention, can solve the problems of high protection construction difficulty and difficult safety and ecological environment protection caused by a lot of slope surface stone rolling and pressing coverage phenomena in the slope excavation construction, and realize the safety and the ecological protection in the slope excavation.

Description

A kind of slope protection structure and construction method thereof
Technical field
The present invention relates to safety, ecological protection process field in the engineering slope earthwork evacuation construction such as highway, power station, especially a kind of slope protection structure and construction method thereof.
Background technology
In slope excavation engineering construction; phenomenon and the requirement guaranteeing that below construction part, road safety is current of the upper and lower working face cross-operation of usual existence; and very easily to generation pressure covering problem domatic below excavation slope; construction safety, ecological environmental protection outstanding problem; particularly in deep high mountain and steep gorge area; side slope is precipitous, and practical, safety and ecological protection measure is reliably the necessary condition that slope excavation engineering is carried out smoothly.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of slope protection structure and construction method thereof; can solve in slope excavation construction; there is a large amount of domatic Rolling Stone and cover lid phenomenon; construction of prevention work difficulty is large; the problem of safety, ecological environmental protection difficulty, achieves slope excavation safety and ecological protection.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of slope protection structure, and side slope is provided with steel structure pushing off the slag curtain wall, the pushing off the slag ridge and soft protecting net from top to bottom.
Steel structure pushing off the slag curtain wall be located at apart from 1 ~ 2m place outside excavating sideline domatic on.
The pushing off the slag ridge is the pushing off the slag ridge that the mode of employing boring joint bar is arranged in the side slope at 1.5 ~ 3m place below steel structure pushing off the slag curtain wall.
Soft protecting net is arranged in the side slope at 12 ~ 18m place below steel structure pushing off the slag curtain wall.
The construction method of above-mentioned slope protection structure, the method comprises the following steps:
1) steel structure pushing off the slag curtain wall construction: adopt the mode of " interior side-lining, outside are shored, earth anchor anchoring " to be supported by steel structure pushing off the slag curtain wall to be fixed on the domatic of outside excavating sideline 1 ~ 2m place;
2) pushing off the slag ridge construction: adopt the mode of boring joint bar to be arranged on the pushing off the slag ridge in the side slope at 1.5 ~ 3m place below steel structure pushing off the slag curtain wall;
3) soft protecting net construction: soft protecting net is arranged in the side slope at 12 ~ 18m place below steel structure pushing off the slag curtain wall, namely completes the construction of above-mentioned slope protection structure.
The form of construction work of " interior side-lining, outside are shored, earth anchor anchoring " of step 1) steel structure pushing off the slag curtain wall comprises the following steps:
1-1) earth anchor joint bar: imbed the round steel of long 1.5 ~ 2.0m after adopting hammer drill boring as earth anchor 7 joint bar;
1-2) make rigid cage: on earth anchor joint bar, weld many i iron, form the vertical rigid support of pushing off the slag curtain wall, bottom many i iron and top be welded into an entirety by cross bar, obtained rigid cage;
1-3) arrange overcoat and buffer strip: be paved on inside rigid cage by the bamboo cane flaggy of at least one deck colligation, form overcoat, on overcoat, colligation tire is as buffer strip;
1-4) installation traction and support system: install many group pull ropes and organize drawing pull bar more, then installation is shored and diagonal brace, namely completes the construction of steel structure pushing off the slag curtain wall.
The construction method on the pushing off the slag ridge is: be drilled with joint bar hole, joint bar, joint bar welds multiple tracks lateral connection muscle and obtains the pushing off the slag ridge forming entirety.
The construction method of soft protecting net comprises the following steps: column and guyed foundation excavation, column installation, soft protecting net installation and bracing wire construction.
A kind of slope protection structure provided by the invention and construction method thereof, steel structure pushing off the slag curtain wall mainly plays the effect preventing spoil stone from tumbling below; The pushing off the slag ridge is mainly played and is prevented domatic upper square steel structure pushing off the slag curtain wall in cleaning cubic metre of earth and stone process, and the cubic metre of earth and stone becomes scattered about domatic effect; Soft protecting net mainly plays the effect preventing from tumbling slungshot and hurt sb.'s feelings.
A kind of slope protection structure provided by the invention and construction method thereof, adopt high level matches with low level, the mode of coupling hardness with softness, by steel structure pushing off the slag curtain wall, the pushing off the slag ridge and soft protecting net orderly be arranged on the outer side slope of excavating sideline, give full play to steel structure pushing off the slag curtain wall body of wall solid and reliable, strong and the soft protecting net of anti-impact force absorbs the feature of potential energy, form an effective safety and Eco-farming shelterbelt system, for engineering run smooth and safe operation is from now on laid a solid foundation, can solve in slope excavation construction, there is a large amount of domatic Rolling Stone and cover lid phenomenon, construction of prevention work difficulty is large, safety, the problem of ecological environmental protection difficulty, achieve slope excavation safety and ecological protection.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the structural representation of side slope protection of the present invention.
Fig. 2 is the front view of steel structure pushing off the slag curtain wall of the present invention.
Fig. 3 is the lateral view of steel structure pushing off the slag curtain wall Fig. 2 of the present invention.
Detailed description of the invention
As shown in Figure 1, a kind of slope protection structure, side slope 1 is provided with steel structure pushing off the slag curtain wall 2, the pushing off the slag ridge 3 and soft protecting net 4 from top to bottom.
Steel structure pushing off the slag curtain wall 2 be located at apart from 1 ~ 2m place outside excavating sideline domatic on, preferred distance is 1m; The height of steel structure pushing off the slag curtain wall 2 is preferably 6m.。
The pushing off the slag ridge 3 is the pushing off the slag ridge that the mode of employing boring joint bar is arranged in the side slope at 1.5 ~ 3m place below steel structure pushing off the slag curtain wall 2, and preferred distance is 2m, and the height on the pushing off the slag ridge 3 is preferably 1m.
Soft protecting net 4 is arranged in the side slope at 12 ~ 18m place below steel structure pushing off the slag curtain wall 2, and preferred distance is 15m, and the height of soft protecting net 4 is preferably 6m.
A construction method for slope protection structure, the method comprises the following steps:
1) steel structure pushing off the slag curtain wall 2 is constructed: adopt the mode of " interior side-lining, outside are shored, earth anchor anchoring " to be supported by steel structure pushing off the slag curtain wall 2 to be fixed on the domatic of outside excavating sideline 1 ~ 2m place;
2) construct in the pushing off the slag ridge 3: adopt the mode of boring joint bar to be arranged on the pushing off the slag ridge 3 in the side slope at 1.5 ~ 3m place below steel structure pushing off the slag curtain wall 2;
3) soft protecting net 4 is constructed: be arranged at by soft protecting net 4 in the side slope at 12 ~ 18m place below steel structure pushing off the slag curtain wall 2, namely complete the construction of above-mentioned slope protection structure.
The form of construction work of " interior side-lining, outside are shored, earth anchor anchoring " of step 1) steel structure pushing off the slag curtain wall 2 comprises the following steps:
1-1) earth anchor 7 joint bar: imbed the round steel (diameter is 38mm) of long 1.5 ~ 2.0m after adopting hammer drill boring as earth anchor 7 joint bar, convenient and quick construction;
1-2) make rigid cage 5: on earth anchor 7 joint bar, weld many i iron I20b, form the vertical rigid support of pushing off the slag curtain wall, bottom many i iron I20b and top be welded into an entirety by cross bar, cross bar bottom many i iron I20b adopts lightweight I-beam I18a that many i iron bottom weldings are become an entirety, and employing diameter is that the rebar spacing 0.25m of 22mm is welded into an entirety by above bottom many i iron I20b;
Obtained rigid cage (5);
Overcoat 6 and buffer strip 8 1-3) are set: (adopt diameter to be that the reinforcing bar of 22mm is as tying up bar the bamboo cane flaggy of 1 ~ 3 layer of colligation, interval 2.0m carries out colligation to Bamboo strip plate), be paved on inside rigid cage 5, form overcoat 6, on overcoat 6, colligation tire is as buffer strip 8;
Two diameters 1-4) are adopted to be that 50mm thick walled steel tube ties up weldering composition wall connecting horizontal bar 13, each colligation in middle and lower part and middle and upper part one group outside rigid cage 5 respectively;
1-5) traction and support system are installed:
A, installation many groups pull rope 9:
Diameter is adopted to be that the every spacing of 18mm wire rope 3 i iron I20b arrange one group of pull rope 4, after the wall connecting horizontal bar 13 of steel wire penetrating pushing off the slag curtain wall middle and upper part, traction is anchored on earth anchor 7 joint bar, often organizes pull rope 4 and should be not more than 60 ° through the angle formed after wall connecting horizontal bar 6;
B, installation many groups drawing pull bar 10
Adopt diameter to be that the every spacing of 22mm reinforcing bar 3 I20b arrange one group of drawing pull bar 10, every root diameter is after 22mm reinforcing bar passes the wall connecting horizontal bar 13 of pushing off the slag curtain wall middle and lower part, connects traction and is anchored on earth anchor 7 joint bar;
C, installation shore 11
I18a i iron is adopted to stay on the bottom of the wall connecting horizontal bar 13 outside pushing off the slag curtain wall, every spacing 1.2m
1 I18a is set and shores 11;
D, installation diagonal brace 12
Inside shoring 11, adopt diameter to be that 50mm thick walled steel tube installs twice diagonal brace 12, prevent from shoring 11 stressed
Distortion;
Namely complete the construction of steel structure pushing off the slag curtain wall 2, the structure of steel structure pushing off the slag curtain wall 2 as shown in Figures 2 and 3.
The construction method on the pushing off the slag ridge 3 is:
A, be drilled with joint bar hole;
B, joint bar: adopt diameter 25mm reinforcing bar to make joint bar, joint bar gos deep into basement rock 0.5m, exposes 1m, joint bar spacing
0.6m;
C, on joint bar (high 0.5m and top end) weld twice lateral connection muscle and obtain and form the overall pushing off the slag ridge 3.
Can on joint bar colligation 5 layers of Bamboo strip plate, adopt diameter to be that the reinforcing bar of 22mm ties up bar, spacing 2.0m colligation
Article one.
The construction method of soft protecting net 4 comprises the following steps:
1) surface dust in slope protection region and float stone or local stiffening is removed;
2) by the cabling surveying setting-out of soft protecting net, determine anchor pole and base position, artificial drill rod is cut a hole a degree of depth in each position, hole and is not less than the pit that anchor pole exposes ring set length, the pit of general bore 20cm, dark 20cm;
3) bore with air leg and bore bolthole by projected depth, hole depth should than long more than the 5cm of design rock-bolt length, and aperture is not less than 45mm; When by rock drilling equipment restriction, the two strands of steel cables forming every root anchor pole anchor into two apertures respectively and are not less than in the anchor hole of diameter 35mm, form chevron shaped anchor pole, and between two strands of steel cables, angle is 15 ° ~ 30 °, to reach same anchoring effect;
4) clear hole, high pressure geomantic omen, the cement mortar of artificial skyhook, perfusion cement-sand ratio 1:1 ~ 1:2, water/binder ratio 0.45 ~ 0.50, slurries label is not less than M20, cement should use 425# Portland cement, sand selects particle diameter to be not more than the middle fine sand of 3mm, guarantee that mortar is full, maintenance enters next procedure after being no less than 3 days;
5) install column, install in length and breadth to supporting rope, jack tension, two ends are respectively exposed ring set with 2 ~ 4 wire clips with anchor pole and are fixedly connected with;
6) paving hangs grid, and spread extension from the top down, between grid, overlap is not less than 5cm, and 1m spacing ligation pressed by the iron wire of diameter 1.2mm of the stitching between two grids;
7) lay steel rope net, lay from the top down and use φ 8mm steel cable to sew up, often open steel rope net and all sew up with a stitching rope being about 31m and surrounding wire rope, after jack tension, stitching two ends of restricting respectively to be fixed with nettle with two wire clips and to connect.

Claims (8)

1. a slope protection structure, is characterized in that: in side slope (1), be provided with steel structure pushing off the slag curtain wall (2), the pushing off the slag ridge (3) and soft protecting net (4) from top to bottom.
2. a kind of slope protection structure according to claim 1, is characterized in that: steel structure pushing off the slag curtain wall (2) be located at apart from 1 ~ 2m place outside excavating sideline domatic on.
3. a kind of slope protection structure according to claim 1, is characterized in that: the pushing off the slag ridge (3) are adopt the mode of boring joint bar to be arranged at apart from the pushing off the slag ridge in the side slope at 1.5 ~ 3m place, steel structure pushing off the slag curtain wall (2) below.
4. a kind of slope protection structure according to claim 1, is characterized in that: soft protecting net (4) is arranged at apart from the side slope at 12 ~ 18m place, steel structure pushing off the slag curtain wall (2) below.
5. a construction method for slope protection structure, is characterized in that the method comprises the following steps:
1) steel structure pushing off the slag curtain wall (2) construction: adopt the mode of " interior side-lining, outside are shored, earth anchor anchoring " steel structure pushing off the slag curtain wall (2) to be supported to be fixed on the domatic of outside excavating sideline 1 ~ 2m place;
2) the pushing off the slag ridge (3) construction: adopt the mode of boring joint bar the pushing off the slag ridge (3) to be arranged at apart from the side slope at 1.5 ~ 3m place, steel structure pushing off the slag curtain wall (2) below;
3) soft protecting net (4) construction: soft protecting net (4) is arranged at apart from the side slope at 12 ~ 18m place, steel structure pushing off the slag curtain wall (2) below, namely completes the construction of above-mentioned slope protection structure.
6. the construction method of a kind of slope protection structure according to claim 5, is characterized in that the form of construction work of " interior side-lining, outside are shored, earth anchor anchoring " of step 1) steel structure pushing off the slag curtain wall (2) comprises the following steps:
1-1) earth anchor (7) joint bar: imbed the round steel of long 1.5 ~ 2.0m after adopting hammer drill boring as earth anchor 7 joint bar;
1-2) make rigid cage (5): on earth anchor (7) joint bar, weld many i iron, form the vertical rigid support of steel structure pushing off the slag curtain wall, bottom many i iron and top be welded into an entirety by cross bar, obtained rigid cage (5);
Overcoat (6) and buffer strip (8) 1-3) are set: the bamboo cane flaggy of at least one deck colligation is paved on rigid cage (5) inner side, forms overcoat (6), at the upper colligation tire of overcoat (6) as buffer strip (8);
1-4) traction and support system are installed: install and organize pull rope (9) more and organize drawing pull bar (10) more, then (11) and diagonal brace (12) are shored in installation, namely complete the construction of steel structure pushing off the slag curtain wall (2).
7. the construction method of a kind of slope protection structure according to claim 5, is characterized in that the construction method on the pushing off the slag ridge (3) is: be drilled with joint bar hole, joint bar, joint bar welds multiple tracks lateral connection muscle and obtains the pushing off the slag ridge (3) forming entirety.
8. the construction method of a kind of slope protection structure according to claim 5, is characterized in that the construction method of soft protecting net (4) comprises the following steps: column and guyed foundation excavation, column installation, soft protecting net installation and bracing wire construction.
CN201410085470.2A 2014-03-11 2014-03-11 Slope protection structure and construction method thereof Pending CN104912088A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410085470.2A CN104912088A (en) 2014-03-11 2014-03-11 Slope protection structure and construction method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410085470.2A CN104912088A (en) 2014-03-11 2014-03-11 Slope protection structure and construction method thereof

Publications (1)

Publication Number Publication Date
CN104912088A true CN104912088A (en) 2015-09-16

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Application Number Title Priority Date Filing Date
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Country Link
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106522246A (en) * 2016-11-18 2017-03-22 中国电建集团成都勘测设计研究院有限公司 Construction protection system for deep foundation pit in alpine and gorge region
CN107268467A (en) * 2017-07-11 2017-10-20 四川理工学院 A kind of collapse rock-fall interception structure
CN109853408A (en) * 2018-12-10 2019-06-07 西南交通大学 A kind of double grading flexible protection systems and its design method for high gradient slope Lin Ya highway

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106522246A (en) * 2016-11-18 2017-03-22 中国电建集团成都勘测设计研究院有限公司 Construction protection system for deep foundation pit in alpine and gorge region
CN107268467A (en) * 2017-07-11 2017-10-20 四川理工学院 A kind of collapse rock-fall interception structure
CN109853408A (en) * 2018-12-10 2019-06-07 西南交通大学 A kind of double grading flexible protection systems and its design method for high gradient slope Lin Ya highway

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