CN105155556B - A kind of open-pit slope separate unit rank wedge-shaped indentation flattens domatic construction method - Google Patents

A kind of open-pit slope separate unit rank wedge-shaped indentation flattens domatic construction method Download PDF

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CN105155556B
CN105155556B CN201510596228.6A CN201510596228A CN105155556B CN 105155556 B CN105155556 B CN 105155556B CN 201510596228 A CN201510596228 A CN 201510596228A CN 105155556 B CN105155556 B CN 105155556B
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wedge
oblique pull
bar
slope
domatic
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CN105155556A (en
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李如忠
赵蒙生
代永新
刁虎
赵武鹍
张春
熊齐欢
李林丹
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MAANSHAN Mine Research Institute Co.,Ltd.
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Sinosteel Maanshan Institute of Mining Research Co Ltd
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Abstract

Domatic construction method is flattened the invention discloses a kind of open-pit slope separate unit rank wedge-shaped indentation, according to the lithology of rock mass in wedge-shaped indentation shapes and sizes, side slope, some row's armature borings is arranged from top to bottom to wedge-shaped sliding surface;Self-designed L shape oblique pull anchor pole;Domatic bar-mat reinforcement is made according to wedge-shaped indentation shapes and sizes(2);Lengths of rebar is fixed into the inside of L shape oblique pull anchor pole(4)It is inserted into armature boring, and is fixedly connected with cement mortar;By domatic bar-mat reinforcement by the way of welding(2)It is fixed in the anchor bar of L shape oblique pull anchor pole section;The casting concrete in wedge-shaped indentation(3), make rock mass in side slope, L shape oblique pull anchor pole, domatic bar-mat reinforcement(2)Pour integrated overall structure.Constructed using the inventive method, stope step road surface can be recovered, effectively made up road disruption that stope rectangular sliding body causes and leveling is domatic, reinforced for side slope framework beam and necessary precondition is provided.

Description

A kind of open-pit slope separate unit rank wedge-shaped indentation flattens domatic construction method
Technical field
The present invention relates to a kind of administering method of open mine side slope, slided more particularly, to a kind of open-pit slope sphenoid Dynamic administering method, can apply in other similar Geotechnical Engineerings.Especially when open-pit slope Wedge sliding forms separate unit During rank wedge-shaped indentation, using the method be used for road recover, flatten it is domatic prevent rain drop erosion particularly suitable, while give Vierendeel girder Reinforcement side slope surface provides necessary precondition.
Background technology
With the continuous expansion of opencast mining scale, the depth of opencast mining also increases sharply, at the same time outdoor The side slope step exposure of ore deposit is also more and more, and some excavating plants have formd depression stope or deep recessed stope.Due to side slope not What the influence of ballast and side slope safety were managed is not good at, and open-pit slope landslide is may result in, to mine personal security, state Family's property and mineral resources bring serious harm and loss.
Common Disruption of opencast slope pattern mainly has:Planar slide, Wedge sliding, curved surface sliding-modes, topple over Deformation pattern, turns and twists failure pattern.Wherein Wedge sliding pattern the big side slope of opencut and stage bench slope destruction in pole For common.Its citation form is that side slope is cut into wedge block with the controlling structural plane of side slope oblique by two or three. Glided along discontinuities array intersection under Gravitative Loads, its scale is relevant with controlling Structural plane distribution situation.
Most common problem is that side slope separate unit rank occurs sphenoid landslide in current open-pit slope landslide, so as to cause platform Site inside accesses road is adopted in rank breach, the interruption of road, influence side slope implementation attractive in appearance and Reinforcement engineering measure, serious influence The current of road causes to influence normal production.
In order to effectively prevent and administer Slope Problems, the major tasks of the current area research concentrate on side slope In stability analysis and preventing land slide, such as《Surface mining technology》" double sharp iron ore Wedge sliding sides that 4th phase in 2014 delivers In the text of Analysis of Stability of Front Slope ", wedge failure analysis, regional analysis residing for Wedge sliding have been carried out respectively, by double The qualitative and quantitative analysis of sharp iron ore southeast end E areas wedge shape destruction, show that it produces the stability system of the structural plane of wedge shape destruction Number, and point out to need to use it appropriate safety measure.But up to the present, in the prior art also not to open-pit slope Domatic construction method how is flattened when having formed separate unit rank wedge-shaped indentation.
The content of the invention
The purpose of the present invention, exactly causes to solve the breach formed behind common excavating plant side slope sphenoid landslide The road disruption of excavating plant step, and a kind of open-pit slope separate unit rank wedge-shaped indentation is provided and flattens domatic construction party Method, is that smooth side slope surface, rain drop erosion protection, Vierendeel girder Reinforcement etc. provide precondition.
To realize above-mentioned purpose of the invention, a kind of open-pit slope separate unit rank wedge-shaped indentation leveling of the invention is domatic to be applied Work method uses following technical scheme:
A kind of open-pit slope separate unit rank wedge-shaped indentation of the present invention flattens domatic construction method, and first wedge-shaped sliding surface is carried out Dabbing treatment, and removes surface surface dust, to increase the follow-up concrete for pouring and rectangular sliding body skin-friction force, then use with Lower scheme is constructed:
1) according to the lithology of rock mass in wedge-shaped indentation shapes and sizes, side slope, some is arranged from top to bottom to wedge-shaped sliding surface Row's armature boring;The quantity of armature boring, depth and spacing determine according to Force Calculation.
2) self-designed L shape oblique pull anchor pole, described L shape oblique pull anchor pole is by the fixed lengths of rebar in inside, outside oblique rollering steel The globality structure that muscle section, anchor bar section are constituted, wherein anchor bar section are the elbow of L shape oblique pull anchor pole;
3) domatic bar-mat reinforcement is made according to wedge-shaped indentation shapes and sizes;
4) inside of L shape oblique pull anchor pole is fixed into lengths of rebar to be inserted into armature boring, and with cement mortar by L shape The inside of oblique pull anchor pole is fixed lengths of rebar and is fixedly connected with rock mass in side slope;
5) make domatic bar-mat reinforcement by oneself, domatic bar-mat reinforcement is fixed to the anchoring of L shape oblique pull anchor pole by the way of welding In lengths of rebar;
6) casting concrete in wedge-shaped indentation, pour rock mass in side slope, L shape oblique pull anchor pole, domatic bar-mat reinforcement for Integrated overall structure.
The diameter for considering the lithology of rock mass and L shape oblique pull anchor pole in wedge-shaped indentation shapes and sizes, side slope is big It is small, determine quantity, depth and the spacing of armature boring.Under normal circumstances, the depth of described armature boring, anchor bar section Length is 2.5~6m, preferable with 3~5m;The length of the outside oblique pull lengths of rebar of the L shape oblique pull anchor pole be wedge-shaped sliding surface extremely The distance in former bench slope face.
Because anchor bar section and the fixation of rock mass in side slope are typically parallel to horizontal plane stress preferably, therefore described anchor Preferably with lateral aperture, anchor bar section is perpendicular to outside oblique pull lengths of rebar, internal fixed lengths of rebar and is folded to top in bar drill hole.
Described domatic bar-mat reinforcement is the steel grid of colligation, and mesh spacing is (250~400) mm × (250~400) Mm, generally using the mesh spacing of 300mm × 300mm, domatic bar-mat reinforcement is welded with the anchor bar section of L shape oblique pull anchor pole Fixation is connect, an overall structure is formed it into.
Depending on anchor bar section is according to the size of reinforcing bar, general grade III steel anchor bar segment length is that its diameter is 30~40 times of its diameter, with 36 times preferably.
A kind of open-pit slope separate unit rank wedge-shaped indentation of the present invention flattens domatic construction method and uses above technical scheme Afterwards, stope step road surface can be recovered, road disruption that stope rectangular sliding body causes effectively is made up and leveling is domatic, be side Slope Vierendeel girder is reinforced and provides necessary precondition.
Certainly, in a kind of domatic construction method of open-pit slope separate unit rank wedge-shaped indentation leveling of the invention, described L-shaped The outside oblique pull lengths of rebar of shape oblique pull anchor pole, internal fixed lengths of rebar are typically parallel to horizontal plane, it would however also be possible to employ other angles, Domatic bar-mat reinforcement also such as can be welded to L shape oblique using multilayer and oblique pull anchor pole combining structure using 2-5 layers of domatic bar-mat reinforcement The diverse location in the outside oblique pull lengths of rebar of anchor pole is drawn, as long as there is same or like technology design with the present invention, is all belonged to In protection scope of the present invention.
Brief description of the drawings
Fig. 1 is the schematic diagram after the oblique pull rockbolt installation to rock mass in side slope that the present invention is used;
Fig. 2 is that a kind of open-pit slope separate unit rank wedge-shaped indentation of the invention flattens the knot after constructing in domatic construction method Structure schematic diagram;
Fig. 3 is open-pit slope separate unit rank wedge-shaped indentation gliding mass schematic diagram.
Reference is:Rock mass in 1- side slopes, the domatic bar-mat reinforcements of 2-, 3- concrete, the fixed lengths of rebar in 4- inside, outside 5- Oblique pull lengths of rebar, 6- anchor bars section, 7- armature borings.
Specific embodiment
It is whole to a kind of open-pit slope separate unit rank wedge-shaped indentation of the invention below in conjunction with the accompanying drawings to further describe the present invention The construction method in flat slope face is described in further detail.
As shown in Figure 1 the present invention use oblique pull rockbolt installation to rock mass in side slope after schematic diagram find out, homemade L Shape oblique pull anchor pole is the globality structure being made up of the fixed lengths of rebar 4 in inside, outside oblique pull lengths of rebar 5, anchor bar section 6, 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, interior Lengths of rebar 4 is fixed in portion;Armature boring 7 uses lateral aperture.The inside of L shape oblique pull anchor pole fixes lengths of rebar 4 and is inserted into anchor pole brill In hole 7, anchor bar section 6 is fixedly connected with rock mass in side slope 1 using M30 cement mortar, and depth stress is true according to calculating Fixed, the depth of usual armature boring 7, the length of anchor bar section 6 are preferable for 3~5m.The length of outside oblique pull lengths of rebar 5 is usual Position according to L shape oblique pull anchor pole determines away from domatic distance.
Of the invention a kind of open-pit slope separate unit rank wedge-shaped indentation as shown in Figure 2 is constructed in flattening domatic construction method Rear structural representation simultaneously finds out that a kind of open-pit slope separate unit rank wedge-shaped indentation of the invention flattens domatic construction with reference to Fig. 3 Method, first carries out dabbing treatment to wedge-shaped sliding surface, to increase the frictional force of concrete and wedge-shaped sliding surface.Then following scheme is used Constructed:
1) according to the lithology of rock mass 1 in wedge-shaped indentation shapes and sizes, side slope, some is arranged from top to bottom to wedge-shaped sliding surface Row's armature boring 7;The depth of described armature boring 7, the length of anchor bar section 6 are 3~5m;The L shape oblique pull anchor pole The length of outside oblique pull lengths of rebar 5 be distance of the wedge-shaped sliding surface to former bench slope face.
Described armature boring 7 uses lateral aperture, and anchor bar section 6 is perpendicular to outside oblique pull lengths of rebar 5, internal fixed steel Muscle section 4 is simultaneously folded to top.
Anchor bar section 6 uses 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 is by the fixed lengths of rebar 4 in inside, outside oblique rollering steel The globality structure that muscle section 5, anchor bar section 6 is constituted, wherein anchor bar section 6 are the elbow of L shape oblique pull anchor pole;
3) domatic bar-mat reinforcement 2 is made according to wedge-shaped indentation shapes and sizes;Domatic bar-mat reinforcement 2 is the steel grid of colligation, Mesh spacing is 300mm × 300mm.Described domatic bar-mat reinforcement 2 is parallel with the former bench face of side slope.
4) inside of L shape oblique pull anchor pole is fixed into lengths of rebar 4 to be inserted into armature boring 7, and uses M30 cement mortar The inside of L shape oblique pull anchor pole is fixed into lengths of rebar 4 to be fixedly connected with rock mass in side slope 1;
5) domatic bar-mat reinforcement 2 is fixed in the anchor bar of L shape oblique pull anchor pole section 6 by the way of welding;
6) casting concrete 3 in wedge-shaped indentation, pour rock mass 1 in side slope, L shape oblique pull anchor pole, domatic bar-mat reinforcement 2 Integrated overall structure.
A kind of open-pit slope separate unit rank wedge-shaped indentation of the present invention flattens domatic construction method, can effectively make up stope Road that rectangular sliding body is caused interrupts and flattens domatic, is reinforced for side slope grid beam and provides necessary precondition.

Claims (1)

1. a kind of open-pit slope separate unit rank wedge-shaped indentation flattens domatic construction method, and first wedge-shaped sliding surface is carried out at dabbing Reason, it is characterised in that also constructed using following scheme:
1) according to the lithology of rock mass (1) in wedge-shaped indentation shapes and sizes, side slope, some rows are arranged from top to bottom to wedge-shaped sliding surface Armature boring (7);
2) self-designed L shape oblique pull anchor pole, described L shape oblique pull anchor pole is by the fixed lengths of rebar (4) in inside, outside oblique pull reinforcing bar The globality structure that section (5), anchor bar section (6) are constituted, wherein anchor bar section (6) is the elbow of L shape oblique pull anchor pole;
3) domatic bar-mat reinforcement (2) is made according to wedge-shaped indentation shapes and sizes;
4) inside of L shape oblique pull anchor pole is fixed into lengths of rebar (4) to be inserted into armature boring (7), and with cement mortar by L-shaped The inside of shape oblique pull anchor pole is fixed lengths of rebar (4) and is fixedly connected with rock mass in side slope (1);
5) domatic bar-mat reinforcement (2) is fixed on the anchor bar of L shape oblique pull anchor pole section (6) by the way of welding;
6) casting concrete (3) in wedge-shaped indentation, pour rock mass in side slope (1), L shape oblique pull anchor pole, domatic bar-mat reinforcement (2) Build integrated overall structure;
The depth of described armature boring (7), the length of anchor bar section (6) are 3~5m;Outside the L shape oblique pull anchor pole The length in portion's oblique pull lengths of rebar (5) is distance of the wedge-shaped sliding surface to former bench slope face;
Described armature boring (7) is lateral aperture, and anchor bar section (6) is perpendicular to outside oblique pull lengths of rebar (5), internal fixed steel Muscle section (4) is simultaneously folded to top;
Described domatic bar-mat reinforcement (2) is the steel grid of colligation, and mesh spacing is (250~400) mm × (250~400) mm; The length of described anchor bar section (6) is 30~40 times of its diameter.
CN201510596228.6A 2015-09-18 2015-09-18 A kind of open-pit slope separate unit rank wedge-shaped indentation flattens domatic construction method Active CN105155556B (en)

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CN106503354B (en) * 2016-11-01 2019-06-04 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
CN107447765B (en) * 2017-05-24 2019-07-09 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

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Address after: 243000 Xitang Road, Ma'anshan Economic Development Zone, Anhui, No. 666

Patentee after: MAANSHAN Mine Research Institute Co.,Ltd.

Address before: 243000 Xitang Road, Ma'anshan Economic Development Zone, Anhui, No. 666

Patentee before: SINOSTEEL MAANSHAN INSTITUTE OF MINING RESEARCH Co.,Ltd.