CN105155556A - Construction method of single-step wedge-shaped gap leveling slope surface of side slope of strip mine - Google Patents
Construction method of single-step wedge-shaped gap leveling slope surface of side slope of strip mine Download PDFInfo
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- CN105155556A CN105155556A CN201510596228.6A CN201510596228A CN105155556A CN 105155556 A CN105155556 A CN 105155556A CN 201510596228 A CN201510596228 A CN 201510596228A CN 105155556 A CN105155556 A CN 105155556A
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 230000002787 reinforcement Effects 0.000 claims abstract description 26
- 239000011435 rock Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000011083 cement mortar Substances 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims abstract description 4
- 238000007373 indentation Methods 0.000 claims description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 abstract 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241000668854 Howardia biclavis Species 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000368 destabilizing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a construction method of a single-step wedge-shaped gap leveling slope surface of a side slope of a strip mine. The method comprises the following steps: arranging a plurality of rows of anchor rod drill holes on a wedge-shaped slide surface from top to bottom according to the shape and size of a wedge-shaped gap and the lithological characters of rock mass in the side slope; self-manufacturing an L-shaped cable-stayed anchor rod; manufacturing a slope surface reinforcement fabric (2) according to the shape and size of the wedge-shaped gap; inserting an internally fixed reinforcement section (4) of the L-shaped cable-stayed anchor rod into the anchor rod drill holes, and fixedly connecting by using cement mortar; fixing the slope surface reinforcement fabric (2) on an anchored reinforcement section of the L-shaped cable-stayed anchor rod by adopting a welding way; and pouring concrete (3) in the wedge-shaped gap to enable the rock mass in the side slope, the L-shaped cable-stayed anchor rod and the slope surface reinforcement fabric (2) to be poured into an integrated overall structure. By adopting the method disclosed by the invention for construction, stope step pavements can be restored, the problem of road blocking caused by stope wedge-shaped slip mass and the problem of slope surface leveling are effectively made up, and thus necessary pre-conditions are provided for reinforcing side slope frame girders.
Description
Technical field
The present invention relates to a kind of administering method of open mine side slope, especially relate to a kind of administering method of open-pit slope Wedge sliding, can apply in the geotechnical engineering that other is similar.Special in open-pit slope Wedge sliding forms separate unit rank wedge-shaped indentation, adopt the method to be used for road and recover, flatten and domaticly prevent rain drop erosion particularly applicable, provide the precondition of necessity to Vierendeel girder Reinforcement side slope surface simultaneously.
Background technology
Along with the continuous expansion of opencast mining scale, the degree of depth of opencast mining also increases sharply, and the meanwhile side slope step exposure of opencut also gets more and more, and some excavating plant has defined depression stope or dark recessed stope.Due to the impact of side slope destabilizing factor and being not good at of side slope safety management, open-pit slope may being caused to come down, bring serious harm and loss to mine personal security, national wealth and mineral resources.
Common Disruption of opencast slope pattern mainly contains: planar slide, Wedge sliding, curved surface sliding-modes, Toppling Deformation pattern, turns and twists failure pattern.Wherein the large side slope in ore deposit and stage bench slope are very common in destroying in the open for Wedge sliding pattern.Its citation form is, by the controlling structural plane of two or three and side slope oblique, side slope is cut into wedge block.Glide along discontinuities array intersection under Gravitative Loads, its scale is relevant with controlling Structural plane distribution situation.
In current open-pit slope landslide, modal problem is that sphenoid landslide occurs on side slope separate unit rank, thus cause step breach, the interruption of road, affect the enforcement of the attractive in appearance and Reinforcement engineering measure of side slope, serious current the causing of traffic route in stope that affect affects normal production.
In order to effectively prevent and administer Slope Problems, on the stability analysis that the major tasks of this area research current concentrate on side slope and preventing land slide, as in " two sharp iron ore Wedge sliding Analysis of Slope Stability " literary composition that " surface mining technology " the 4th phase in 2014 delivers, carry out regional analysis residing for wedge failure analysis, Wedge sliding respectively, by the qualitative and quantitative analysis destroyed end E district, two sharp iron ore southeast wedge shape, show that it produces the stability coefficient of the structural plane that wedge shape is destroyed, and point out to need to adopt suitable safety measure to it.But how to flatten domatic construction method when up to the present, also separate unit rank wedge-shaped indentation not having be formed to open-pit slope in prior art.
Summary of the invention
Object of the present invention, the road disruption of excavating plant step is caused exactly in order to solve the common rear breach formed in excavating plant side slope sphenoid landslide, and provide a kind of open-pit slope separate unit rank wedge-shaped indentation to flatten domatic construction method, for side slope surface is smooth, rain drop erosion protection, Vierendeel girder Reinforcement etc. provide precondition.
For realizing above-mentioned purpose of the present invention, the present invention's a kind of open-pit slope separate unit rank wedge-shaped indentation flattens domatic construction method by the following technical solutions:
The present invention's a kind of open-pit slope separate unit rank wedge-shaped indentation flattens domatic construction method, first dabbing process is carried out to wedge shape sliding surface, and remove surperficial surface dust, to increase follow-up concrete of building and rectangular sliding body skin friction, then adopt following scheme to construct:
1) according to the lithology of rock mass in wedge-shaped indentation shape and size, side slope, some row's armature borings are arranged to wedge shape sliding surface from top to bottom; The quantity of armature boring, the degree of depth and spacing are determined according to Force Calculation.
2) self-designed L shape oblique pull anchor pole, described L shape oblique pull anchor pole be fix lengths of rebar by inside, globality structure that outside oblique pull lengths of rebar, anchor bar section are formed, wherein anchor bar section is the elbow of L shape oblique pull anchor pole;
3) according to wedge-shaped indentation shape and the domatic steel mesh reinforcement of large little makings;
4) lengths of rebar is fixed in the inside of L shape oblique pull anchor pole to be inserted in armature boring, and fix lengths of rebar with the inside of cement mortar to the oblique pull anchor pole of L shape and to be fixed with rock mass in side slope and to be connected;
5) make domatic steel mesh reinforcement by oneself, adopt the mode of welding to be fixed to by domatic steel mesh reinforcement in the anchor bar section of L shape oblique pull anchor pole;
6) concreting in wedge-shaped indentation, makes rock mass in side slope, L shape oblique pull anchor pole, domatic steel mesh reinforcement build integrated overall structure.
Consider the lithology of rock mass and the diameter of L shape oblique pull anchor pole in wedge-shaped indentation shape and size, side slope, determine the quantity of armature boring, the degree of depth and spacing.Under normal circumstances, the degree of depth of described armature boring, the length of anchor bar section are 2.5 ~ 6m, better with 3 ~ 5m; The length of the outside oblique pull lengths of rebar of described L shape oblique pull anchor pole is the distance of wedge shape sliding surface to former bench slope face.
Due to rock mass in anchor bar section and side slope fixing, to be usually parallel to horizontal plane better stressed, and therefore described armature boring preferably adopts lateral aperture, anchor bar section vertical with outside oblique pull lengths of rebar, inner fixing lengths of rebar be folded to top.
Described domatic steel mesh reinforcement is the steel grid of colligation, Mesh distance is (250 ~ 400) mm*(250 ~ 400) mm, the Mesh distance of usual employing 300mm*300mm, the anchor bar section of domatic steel mesh reinforcement and L shape oblique pull anchor pole is welded and fixed, and makes it form an overall structure.
Anchor bar section is determined according to the size of reinforcing bar, general grade III steel anchor bar segment length be its diameter be 30 ~ 40 times of its diameter, with 36 times better.
The present invention's a kind of open-pit slope separate unit rank wedge-shaped indentation flattens after domatic construction method adopts above technical scheme, stope step road surface can be recovered, effectively make up road disruption that stope rectangular sliding body causes and leveling domatic, reinforce for side slope framework beam and necessary precondition be provided.
Certainly; the present invention's a kind of open-pit slope separate unit rank wedge-shaped indentation flattens in domatic construction method; outside oblique pull lengths of rebar, the inner fixing lengths of rebar of described L shape oblique pull anchor pole are parallel to horizontal plane usually; also other angle can be adopted; domatic steel mesh reinforcement also can adopt multilayer and oblique pull anchor pole combining structure; diverse location in the outside oblique pull lengths of rebar of L shape oblique pull anchor pole is welded to as adopted the domatic steel mesh reinforcement of 2-5 layer; as long as there is identical or close technical conceive with the present invention, all belong to protection scope of the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of oblique pull rockbolt installation after rock mass in side slope that the present invention adopts;
Fig. 2 is the structural representation that the present invention's a kind of open-pit slope separate unit rank wedge-shaped indentation flattens in domatic construction method after construction;
Fig. 3 is open-pit slope separate unit rank wedge-shaped indentation gliding mass schematic diagrames.
Reference numeral is: rock mass in 1-side slope, the domatic steel mesh reinforcement of 2-, 3-concrete, the fixing lengths of rebar in 4-inside, the outside oblique pull lengths of rebar of 5-, 6-anchor bar section, 7-armature boring.
Detailed description of the invention
For further describing the present invention, below in conjunction with accompanying drawing, domatic construction method being flattened to the present invention's a kind of open-pit slope separate unit rank wedge-shaped indentation and being described in further detail.
The schematic diagram of oblique pull rockbolt installation after rock mass in side slope that the present invention as shown in Figure 1 adopts is found out, homemade L shape oblique pull anchor pole be fix lengths of rebar 4 by inside, globality structure that outside oblique pull lengths of rebar 5, anchor bar section 6 are formed, wherein anchor bar section 6 is the elbow part of L shape oblique pull anchor pole, and anchor bar section 6 is perpendicular to outside oblique pull lengths of rebar 5, inner fixing lengths of rebar 4; Armature boring 7 adopts lateral aperture.The inside of L shape oblique pull anchor pole is fixed lengths of rebar 4 and is inserted in armature boring 7, anchor bar section 6 and rock mass in side slope 1 adopt M30 cement mortar to be fixed to be connected, the degree of depth is stressed to be determined according to calculating, and the degree of depth of usual armature boring 7, the length of anchor bar section 6 are that 3 ~ 5m is better.The length of outside oblique pull lengths of rebar 5 is determined apart from domatic distance according to the position of L shape oblique pull anchor pole usually.
A kind of open-pit slope separate unit of the present invention as shown in Figure 2 rank wedge-shaped indentation flattens the structural representation after constructing in domatic construction method and composition graphs 3 is found out, the present invention's a kind of open-pit slope separate unit rank wedge-shaped indentation flattens domatic construction method, first dabbing process is carried out to wedge shape sliding surface, to increase the frictional force of concrete and wedge shape sliding surface.Then following scheme is adopted to construct:
1) according to the lithology of rock mass 1 in wedge-shaped indentation shape and size, side slope, some row's armature borings 7 are arranged to wedge shape sliding surface from top to bottom; The degree of depth of described armature boring 7, the length of anchor bar section 6 are 3 ~ 5m; The length of the outside oblique pull lengths of rebar 5 of described L shape oblique pull anchor pole is the distance of wedge shape sliding surface to former bench slope face.
Described armature boring 7 adopts lateral aperture, and anchor bar section 6 is vertical fixes lengths of rebar 4 with outside oblique pull lengths of rebar 5, inside and is folded to top.
Anchor bar section 6 adopts grade III steel, and the length of anchor bar section 6 is 36 times of its diameter.
2) self-designed L shape oblique pull anchor pole, described L shape oblique pull anchor pole be fix lengths of rebar 4 by inside, globality structure that outside oblique pull lengths of rebar 5, anchor bar section 6 are formed, wherein anchor bar section 6 is the elbow of L shape oblique pull anchor pole;
3) according to wedge-shaped indentation shape and the domatic steel mesh reinforcement 2 of large little makings; Domatic steel mesh reinforcement 2 is the steel grid of colligation, and Mesh distance is 300mm*300mm.Described domatic steel mesh reinforcement 2 is parallel with the former bench face of side slope.
4) lengths of rebar 4 is fixed in the inside of L shape oblique pull anchor pole to be inserted in armature boring 7, and adopt the inside of M30 cement mortar to the oblique pull anchor pole of L shape to fix lengths of rebar 4 to be fixed with rock mass in side slope 1 and to be connected;
5) mode of welding is adopted to be fixed to by domatic steel mesh reinforcement 2 in the anchor bar section 6 of L shape oblique pull anchor pole;
6) concreting 3 in wedge-shaped indentation, makes rock mass 1 in side slope, L shape oblique pull anchor pole, domatic steel mesh reinforcement 2 build integrated overall structure.
The present invention's a kind of open-pit slope separate unit rank wedge-shaped indentation flattens domatic construction method, and effectively can make up the road that stope rectangular sliding body causes and interrupt and flatten domatic, reinforcing for side slope frame beam provides necessary precondition.
Claims (5)
1. open-pit slope separate unit rank wedge-shaped indentation flattens a domatic construction method, first carries out dabbing process to wedge shape sliding surface, it is characterized in that also adopting following scheme to construct:
1) according to the lithology of rock mass (1) in wedge-shaped indentation shape and size, side slope, some row's armature borings (7) are arranged to wedge shape sliding surface from top to bottom;
2) self-designed L shape oblique pull anchor pole, described L shape oblique pull anchor pole be fix lengths of rebar (4) by inside, globality structure that outside oblique pull lengths of rebar (5), anchor bar section (6) are formed, wherein anchor bar section (6) elbow that is L shape oblique pull anchor pole;
3) according to wedge-shaped indentation shape and the domatic steel mesh reinforcement of large little makings (2);
4) lengths of rebar (4) is fixed in the inside of L shape oblique pull anchor pole to be inserted in armature boring (7), and fix lengths of rebar (4) with the inside of cement mortar to the oblique pull anchor pole of L shape and to be fixed with rock mass in side slope (1) and to be connected;
5) mode of welding is adopted to be fixed in the anchor bar section (6) of L shape oblique pull anchor pole by domatic steel mesh reinforcement (2);
6) concreting (3) in wedge-shaped indentation, makes rock mass in side slope (1), L shape oblique pull anchor pole, domatic steel mesh reinforcement (2) build integrated overall structure.
2. a kind of open-pit slope separate unit rank as claimed in claim 1 wedge-shaped indentation flattens domatic construction method, it is characterized in that: the degree of depth of described armature boring (7), the length of anchor bar section (6) are 2.5 ~ 6m; The length of the outside oblique pull lengths of rebar (5) of described L shape oblique pull anchor pole is the distance of wedge shape sliding surface to former bench slope face.
3. a kind of open-pit slope separate unit rank as claimed in claim 1 or 2 wedge-shaped indentation flattens domatic construction method, it is characterized in that: described armature boring (7) is lateral aperture, anchor bar section (6) is vertical fixes lengths of rebar (4) with outside oblique pull lengths of rebar (5), inside and is folded to top.
4., as a kind of open-pit slope separate unit rank as claimed in claim 3 wedge-shaped indentation flattens domatic construction method, it is characterized in that: the steel grid that described domatic steel mesh reinforcement (2) is colligation, Mesh distance is (250 ~ 400) mm*(250 ~ 400) mm.
5. a kind of open-pit slope separate unit rank as claimed in claim 5 wedge-shaped indentation flattens domatic construction method, it is characterized in that: the length of described anchor bar section (6) is 30 ~ 40 times of its diameter.
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| CN201510596228.6A CN105155556B (en) | 2015-09-18 | 2015-09-18 | A kind of open-pit slope separate unit rank wedge-shaped indentation flattens domatic construction method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106503354A (en) * | 2016-11-01 | 2017-03-15 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of unsaturation soil property stable slope computed improved method |
| CN107447765A (en) * | 2017-05-24 | 2017-12-08 | 四川君羊建设集团有限公司 | Side slope construction supported with framed anchor construction |
| CN107489155A (en) * | 2017-07-24 | 2017-12-19 | 中国十七冶集团有限公司 | A kind of rock slope loses the stable method of construction of sash beam under ramp shaped state |
| CN109083161A (en) * | 2018-08-02 | 2018-12-25 | 浙江交工集团股份有限公司 | Wide ecological slope protection structure and its construction method are spelled suitable for long and narrow space |
| CN111828087A (en) * | 2020-06-15 | 2020-10-27 | 安徽马钢矿业资源集团建材科技有限公司 | Iron tailing comprehensive treatment method based on mine restoration |
| CN115198793A (en) * | 2022-07-08 | 2022-10-18 | 中铁二院工程集团有限责任公司 | Side slope open cut tunnel supporting structure and construction method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106503354A (en) * | 2016-11-01 | 2017-03-15 | 中国科学院、水利部成都山地灾害与环境研究所 | A kind of unsaturation soil property stable slope computed improved method |
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| CN107447765A (en) * | 2017-05-24 | 2017-12-08 | 四川君羊建设集团有限公司 | Side slope construction supported with framed anchor construction |
| CN107489155A (en) * | 2017-07-24 | 2017-12-19 | 中国十七冶集团有限公司 | A kind of rock slope loses the stable method of construction of sash beam under ramp shaped state |
| CN109083161A (en) * | 2018-08-02 | 2018-12-25 | 浙江交工集团股份有限公司 | Wide ecological slope protection structure and its construction method are spelled suitable for long and narrow space |
| CN111828087A (en) * | 2020-06-15 | 2020-10-27 | 安徽马钢矿业资源集团建材科技有限公司 | Iron tailing comprehensive treatment method based on mine restoration |
| CN111828087B (en) * | 2020-06-15 | 2022-06-07 | 安徽马钢矿业资源集团建材科技有限公司 | Iron tailing comprehensive treatment method based on mine restoration |
| CN115198793A (en) * | 2022-07-08 | 2022-10-18 | 中铁二院工程集团有限责任公司 | Side slope open cut tunnel supporting structure and construction method thereof |
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