CN114718094A - Method for supporting broken mountain side slope - Google Patents
Method for supporting broken mountain side slope Download PDFInfo
- Publication number
- CN114718094A CN114718094A CN202210532493.8A CN202210532493A CN114718094A CN 114718094 A CN114718094 A CN 114718094A CN 202210532493 A CN202210532493 A CN 202210532493A CN 114718094 A CN114718094 A CN 114718094A
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- Prior art keywords
- grouting
- anchor cable
- mountain
- slope
- hole
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Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005553 drilling Methods 0.000 claims abstract description 16
- 238000009412 basement excavation Methods 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000011440 grout Substances 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002787 reinforcement Effects 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
Images
Classifications
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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
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- 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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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a method for supporting a broken mountain side slope, which comprises the steps of side slope excavation, anchor rope drilling, cable laying grouting, sash beam construction, protective net construction, anchor rope tensioning, anchor sealing and the like. The invention gives consideration to the reinforcement of the whole mountain and the surface protection of the side slope, and effectively improves the stability of the whole mountain and the anti-weathering effect of the surface.
Description
Technical Field
The invention relates to the technical field of slope support, in particular to a method for supporting a broken mountain slope.
Background
With the rapid development of national capital construction, a large amount of earth and rockfill excavation and slope support are involved in many places. However, the geological conditions in most areas are not ideal, and many mountains are weak, loose and unstable rock-soil bodies. The surface of the sand is loose and strongly weathered gray sandstone, the sand inclusion amount is large, the sand is broken, the accumulation thickness is large, and the joint crack is very developed and extremely unstable. The requirements and the effects of slope support in the project construction process are greatly challenged, and an effective slope support mode is urgently needed to effectively treat the broken rock-soil mass.
Disclosure of Invention
Aiming at the prior art, the invention provides a method for supporting a broken mountain slope, which aims to solve the problems of difficult support and poor support effect of a weak and loose unstable mountain slope.
The invention provides a method for supporting a broken mountain slope, which comprises the following steps:
s1, side slope excavation: measuring and paying off, performing slope excavation on the mountain, ensuring that the position, the gradient, the height and the flatness of the slope excavation meet the design and specification requirements, and entering the next procedure after the slope excavation is qualified;
s2, anchor cable drilling: determining anchor cable point positions on the side slope according to design requirements, drilling anchor cables, and adopting casing following after drilling or drilling;
s3, grouting a lower cable: checking the hole in time after the drilling is finished, ensuring the hole position and the hole depth, ensuring the aperture to meet the design requirement, and putting an anchor cable and grouting after the hole is qualified;
s4, sash beam construction: taking the anchor cable holes which are grouted as end points of the lattice beams, binding reinforcing steel bars according to the size of the lattice beams required by design, erecting a template after acceptance check, and pouring concrete;
s5, construction of a protective net: after the sash beam reinforcing steel bars are bound, fixing the protective net along the edges of the sash beam reinforcing steel bars;
s6, tensioning and sealing the anchor cable: and after the concrete strength of the sash beam and the grouting slurry strength of the anchor cable meet the tensioning requirement of the anchor cable, tensioning the prestressed anchor cable, anchoring in time after the design requirement is met, and finally sealing the anchor.
Preferably, in S2, the sleeve is a thin-walled steel tube.
Preferably, in S2, the diameter of the casing is less than 1cm of the bore diameter.
Preferably, in S3, during grouting, grouting is performed along the hole bottom to the hole opening from the grouting pipe reserved in the anchor cable, and the grouting pressure and the grouting amount meet the design requirements.
Preferably, in S3, the casing is pulled out before the grout is initially set, and then grout is supplied to ensure grouting compactness of the anchor cable holes.
Preferably, in S5, the protection net is an active flexible protection net.
Preferably, in S5, the protective net extends 10cm into the sash beam steel bar.
Compared with the prior art, the invention has the beneficial effects that: the method provided by the invention has the advantages that the whole mountain body is reinforced and the surface of the side slope is protected, the stability of the whole mountain body and the anti-weathering effect of the surface are effectively improved, and the conditions of geological disasters such as landslide and the like of a weak and unstable mountain body in severe weather are avoided.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1. an anchor cable; 2. a lattice beam; 3. an active flexible protective net.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
Examples
A method for breaking a mountain slope support, as shown in fig. 1, comprising the steps of:
s1, side slope excavation: measuring and paying off, performing slope excavation on the mountain, ensuring that the position, the gradient, the height and the flatness of the slope excavation meet the design and specification requirements, and entering the next procedure after the slope excavation is qualified;
s2, anchor cable drilling: determining anchor cable point positions on a side slope according to design requirements, drilling anchor cables, following by using a sleeve after drilling or drilling to prevent hole collapse, wherein the sleeve is a thin-wall steel pipe, and the diameter of the sleeve is smaller than the hole diameter of a drilled hole by 1 cm;
s3, grouting a lower cable: after drilling is finished, checking holes in time to ensure hole positions and hole depths, enabling the hole diameters to meet design requirements, and after the hole positions and the hole depths are qualified, placing an anchor cable 1 and grouting; the grouting adopts professional grouting equipment, grouting is carried out from the bottom of a reserved grouting pipeline in the anchor cable 1 to an orifice, the grouting pressure and the grouting amount meet the design requirements, the sleeve is pulled out in time before the grout is initially set, and then the grout is supplemented, so that the grouting compactness of the anchor cable hole is ensured;
s4, sash beam construction: taking the anchor cable hole which is subjected to grouting as an end point of the lattice beam 2, binding a steel bar according to the size of the lattice beam required by design, wrapping the anchor cable hole by the steel bar to ensure that the lattice beam 2 and the anchor cable 1 are stressed together, erecting a template after acceptance check is passed, and pouring concrete;
s5, construction of a protective net: after the sash beam reinforcing steel bars are bound, the active flexible protective net 3 is fixed along the edges of the sash beam reinforcing steel bars, so that the slope in the sash is protected conveniently, and the active flexible protective net 3 needs to extend into the sash beam reinforcing steel bars by 10cm to ensure the stability of the protective net;
s6, tensioning and sealing the anchor cable: and after the concrete strength of the sash beam and the grouting slurry strength of the anchor cable meet the tensioning requirement of the anchor cable, tensioning the prestressed anchor cable, anchoring in time after the design requirement is met, and finally sealing the anchor.
The invention effectively combines the characteristics of wide reinforcing range and good reinforcing effect of the prestressed anchor cables and good protection of the active flexible protective net on the slope. In addition, the weak and unstable mountain has the characteristics of high surface weathering degree, serious erosion and easy slumping, and the invention can effectively prevent the situations and is an effective slope protection measure.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields, and are within the scope of the present invention.
Claims (7)
1. A method for supporting broken mountain slopes is characterized by comprising the following steps:
s1, side slope excavation: measuring and paying off, performing slope excavation on the mountain, ensuring that the position, the gradient, the height and the flatness of the slope excavation meet the design and specification requirements, and entering the next procedure after the slope excavation is qualified;
s2, anchor cable drilling: determining anchor cable point positions on the side slope according to design requirements, drilling anchor cables, and adopting casing following after drilling or drilling;
s3, grouting a lower cable: after drilling is finished, checking holes in time to ensure hole positions and hole depths, enabling the hole diameters to meet design requirements, and after the holes are qualified, placing an anchor cable and grouting;
s4, constructing the sash beam: taking the anchor cable hole which is subjected to grouting as an end point of the lattice beam, binding a reinforcing steel bar according to the size of the lattice beam required by design, erecting a template after the qualified size is checked, and pouring concrete;
s5, construction of a protective net: after the sash beam reinforcing steel bars are bound, fixing the protective net along the edges of the sash beam reinforcing steel bars;
s6, tensioning and sealing the anchor cable: and after the concrete strength of the sash beam and the grouting slurry strength of the anchor cable meet the tensioning requirement of the anchor cable, tensioning the prestressed anchor cable, anchoring in time after the design requirement is met, and finally sealing the anchor.
2. A method for use in a broken mountain slope support as claimed in claim 1, wherein in S2 the sleeve is thin walled steel tube.
3. A method for breaking mountain slope support according to claim 1 or 2, wherein the diameter of the sleeve is less than 1cm of the bore hole diameter at S2.
4. A method for breaking mountain slope supports as claimed in claim 1, wherein in S3, grouting is performed along the hole bottom to the hole opening from the grouting pipe reserved in the anchor line, and the grouting pressure and grouting amount satisfy the design requirements.
5. A method for breaking mountain slope supports according to claim 1 or 4, wherein in S3, the sleeve is pulled out before the grout is initially set, and then the grout is supplemented to ensure the grouting compactness of the anchor cable holes.
6. A method for breaking a mountain slope support according to claim 1, wherein the protection net is an active flexible protection net in S5.
7. A method for breaking mountain slope support according to claim 1 or 6, wherein the protection net is extended into sash beam steel bars by 10cm at S5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210532493.8A CN114718094A (en) | 2022-05-10 | 2022-05-10 | Method for supporting broken mountain side slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210532493.8A CN114718094A (en) | 2022-05-10 | 2022-05-10 | Method for supporting broken mountain side slope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114718094A true CN114718094A (en) | 2022-07-08 |
Family
ID=82231710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210532493.8A Pending CN114718094A (en) | 2022-05-10 | 2022-05-10 | Method for supporting broken mountain side slope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114718094A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118309089A (en) * | 2024-06-11 | 2024-07-09 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Prestress anchor cable protection net structure for in-situ remediation of high-order dangerous rock and implementation method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05132947A (en) * | 1991-11-08 | 1993-05-28 | Kensetsu Kiso Eng Co Ltd | Construction method of slope protective structure |
| CN102839680A (en) * | 2012-09-27 | 2012-12-26 | 中国建筑第八工程局有限公司 | High slope earthwork and support engineering construction method |
| JP2015183364A (en) * | 2014-03-20 | 2015-10-22 | 公益財団法人鉄道総合技術研究所 | Method for preventing soil structure from sliding at slope surface layer with geocell fixing operation auxiliary means |
| CN105040712A (en) * | 2015-07-08 | 2015-11-11 | 杭州江润科技有限公司 | High-pressure washing anchor planting and recharging comprehensive biological protection structure of soft and hard smashing interbedding type composite rock slope and construction method of structure |
| CN106939609A (en) * | 2017-04-25 | 2017-07-11 | 安徽宝翔建设集团有限责任公司 | Lattice girder slope construction is continuous to become control construction method |
| CN111254955A (en) * | 2020-03-31 | 2020-06-09 | 江西省水利规划设计研究院 | Prestressed anchor cable frame beam device suitable for stability of strongly weathered rock slope |
| CN112095633A (en) * | 2020-08-26 | 2020-12-18 | 浙江佳途勘测设计有限公司 | Construction process of die-free concrete beam |
| CN216379591U (en) * | 2021-12-14 | 2022-04-26 | 北京首创环境科技有限公司 | Ecological lattice beam for mine restoration |
-
2022
- 2022-05-10 CN CN202210532493.8A patent/CN114718094A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05132947A (en) * | 1991-11-08 | 1993-05-28 | Kensetsu Kiso Eng Co Ltd | Construction method of slope protective structure |
| CN102839680A (en) * | 2012-09-27 | 2012-12-26 | 中国建筑第八工程局有限公司 | High slope earthwork and support engineering construction method |
| JP2015183364A (en) * | 2014-03-20 | 2015-10-22 | 公益財団法人鉄道総合技術研究所 | Method for preventing soil structure from sliding at slope surface layer with geocell fixing operation auxiliary means |
| CN105040712A (en) * | 2015-07-08 | 2015-11-11 | 杭州江润科技有限公司 | High-pressure washing anchor planting and recharging comprehensive biological protection structure of soft and hard smashing interbedding type composite rock slope and construction method of structure |
| CN106939609A (en) * | 2017-04-25 | 2017-07-11 | 安徽宝翔建设集团有限责任公司 | Lattice girder slope construction is continuous to become control construction method |
| CN111254955A (en) * | 2020-03-31 | 2020-06-09 | 江西省水利规划设计研究院 | Prestressed anchor cable frame beam device suitable for stability of strongly weathered rock slope |
| CN112095633A (en) * | 2020-08-26 | 2020-12-18 | 浙江佳途勘测设计有限公司 | Construction process of die-free concrete beam |
| CN216379591U (en) * | 2021-12-14 | 2022-04-26 | 北京首创环境科技有限公司 | Ecological lattice beam for mine restoration |
Non-Patent Citations (1)
| Title |
|---|
| 王文辉等: "预应力锚索框架施工工艺和方法的研究", 西部探矿工程, no. 10, pages 49 - 51 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118309089A (en) * | 2024-06-11 | 2024-07-09 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Prestress anchor cable protection net structure for in-situ remediation of high-order dangerous rock and implementation method |
| CN118309089B (en) * | 2024-06-11 | 2024-08-30 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Prestress anchor cable protection net structure for in-situ remediation of high-order dangerous rock and implementation method |
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