CN103277124A - Anchor-rod-combined supporting method for high-sulfur crush rock mine - Google Patents

Anchor-rod-combined supporting method for high-sulfur crush rock mine Download PDF

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Publication number
CN103277124A
CN103277124A CN2013102230770A CN201310223077A CN103277124A CN 103277124 A CN103277124 A CN 103277124A CN 2013102230770 A CN2013102230770 A CN 2013102230770A CN 201310223077 A CN201310223077 A CN 201310223077A CN 103277124 A CN103277124 A CN 103277124A
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China
Prior art keywords
rod
anchor
metal
glass fiber
reinforced plastic
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CN2013102230770A
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Chinese (zh)
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CN103277124B (en
Inventor
王文杰
叶义成
邓金灿
张红军
马生徽
柯丽华
马雄忠
刘艳章
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武汉科技大学
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Priority to CN201310223077.0A priority Critical patent/CN103277124B/en
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Publication of CN103277124B publication Critical patent/CN103277124B/en

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Abstract

The invention particularly relates to an anchor-rod-combined supporting method for a high-sulfur crush rock mine. The technical scheme of the anchor-rod-combined supporting method for the high-sulfur crush rock mine includes firstly, laying a metal grid (2) on a roadway wall surface (4) which is provided with anchor rod holes; secondly, anchoring tube seam type metal anchor rods (1) into the anchor rod holes which are covered by the metal grid (2) and close to the four sides and in the center area of the metal grid (2), and tightly pressing the four sides of the metal grid (2) with metal support discs (9); and lastly, pouring cement paste or anchoring agent into the other anchor rod holes covered by the metal grid (2), mounting GFRP (glass fiber reinforced plastics) rod bodies (5) of GFRP anchor rods (3) into the anchor rod holes with the cement paste or the anchoring agent poured in, directly pressing GFRP anchor rod support discs (6) onto the metal wires of the metal grid (2), and screwing up GFRP anchor rod nuts (7) to tightly press the glass fiber anchor rod support discs (6). The anchor-rod-combined supporting method for the high-sulfur crush rock mine has the advantages of being high in anchoring force, corrosion-resistant, low in supporting cost and capable of fixing the metal grid quickly providing initial anchoring force, being easy to be removed during secondary supporting and effectively guaranteeing the mine production safety, thereby being applicable to the supporting of the high-sulfur crush rock mine.

Description

A kind of associating anchor rod support method for the broken ore deposit of high-sulfur rock

Technical field

The invention belongs to the metal mine laneway support method, be specifically related to a kind of associating anchor rod support method for the broken ore deposit of high-sulfur rock.

Background technology

Bolt support commonly used in the underground mining of metal current mine mainly contains, cement mortar anchor pole, resin anchor, pipe-seam type anchor rod etc., and its material is made by metal material mostly.And support form is divided into bolt support, bolting with wire mesh, bolt-spary supports, shotcrete rock bolt wire mesh support substantially.At the supporting scene, need select rational support form according to on-the-spot ore deposit rock geological conditions.

But complicated and changeable along with the deterioration of the increase of the mining degree of depth, mining geology condition and ore deposit rock physicochemical properties, following problem has also appearred in these metal material anchor poles and support form that metal mine is commonly used in the supporting process: anchored force is low; Influenced by geological environment corrosion takes place and lost efficacy; After destroying, roadway deformation carries out being difficult for anchor metal is removed when repair for 2nd time is safeguarded.Adopt the glass fibre reinforced plastics rockbolts supporting can effectively eliminate ore deposit rock sulfide to the corrosiveness of anchor pole, thereby improve the bolt support effect.The name of applying for as the applicant is called the patent of invention of " a kind of metal mine anchor rod support method (ZL201010221581.3) ", has solved metal mine effectively and has adopted the problem that exists in the anchor metal supporting.But this technology is used in rock soft broken area, ore deposit and is had significantly deficiency, being mainly reflected in the supporting of independent employing glass fibre reinforced plastics rockbolts is difficult to quick fixing metal net and reaches anchoring strength fast, thereby can not satisfy initial stage construction safety requirement, bring potential safety hazard for the anchor net construction operation at supporting initial stage.

Have when in sum, metal mine adopts simple anchor metal and corresponding support pattern supporting thereof that anchored force is low, problem such as easy-clear not when corrosion-vulnerable inefficacy, support cost height, secondary supporting; Also there is initial stage linked network difficulty in the glass fibre reinforced plastics rockbolts supporting, the initial stage anchored force is low and the drawback of poor stability and adopt.

Summary of the invention

The present invention is intended to overcome the prior art defective, purpose provides a kind of anchored force height, be not subject to the burn into support cost low, fast the fixing metal net, be easy to remove and can effectively guarantee the associating anchor rod support method that is used for the broken ore deposit of high-sulfur rock of Mine Safety in Production when initial stage anchored force, secondary supporting can be provided.

For achieving the above object, the technical scheme of the associating anchor rod support method of the present invention's employing is:

Earlier bored bolthole at the tunnel wall, wire lath has been laid on the tunnel wall that has bored bolthole.

The bolthole on close wire lath four limits that wire lath is covered anchors into pipe seam formula anchor metal respectively again, or the bolthole on close wire lath four limits that again wire lath covered and the bolthole of central area anchor into pipe seam formula anchor metal respectively, and the bolthole number of central area is 1 ~ 2; Be pressed on the wire of wire lath the fixing metal net with metal tray.

All the other boltholes that wire lath is covered inject cement paste or anchoring agent then, the glass fiber reinforced plastic body of rod of glass fibre reinforced plastics rockbolts packed into inject the bolthole of cement paste or anchoring agent, the glass fibre reinforced plastics rockbolts pallet directly is pressed on the wire of wire lath, tightens the glass fibre reinforced plastics rockbolts nut and presses the glass fibre reinforced plastics rockbolts pallet.

In above-mentioned associating anchor rod support method:

Glass fibre reinforced plastics rockbolts is made up of the glass fiber reinforced plastic body of rod, nut and glass fibre reinforced plastics rockbolts pallet; Its work structuring is: the glass fibre reinforced plastics rockbolts tray sleeve is at the afterbody of the glass fiber reinforced plastic body of rod, and nut and the glass fiber reinforced plastic body of rod are screw-threaded engagement; The material of the glass fiber reinforced plastic body of rod is the reinforced plastic glass fibre plastics, and the glass fiber reinforced plastic body of rod is that full thread or afterbody are screw thread, and the Major Diam of the glass fiber reinforced plastic body of rod is 15mm ~ 25mm.

Pipe seam formula anchor metal is made up of anchor rod body and metal tray, and material is metal; Its work structuring is: metal tray is enclosed within the afterbody of anchor rod body, and anchor rod body and bolthole produce anchored force by friction.

The material of described glass fiber reinforced plastic pallet is plastics or metal, and the center-hole diameter of pallet is 25mm ~ 35mm, and external diameter is 120mm ~ 150mm.

The material of described nut is plastics or metal, and central through hole is internal thread, and the big footpath of internal thread is with the big footpath of external screw thread of the glass fiber reinforced plastic body of rod.

Point out in passing: the value span of the big footpath of the Major Diam of the glass fiber reinforced plastic body of rod, the internal thread of nut, the center-hole diameter of glass fibre reinforced plastics rockbolts pallet is that wherein big value or little value is corresponding one by one, be one of them parts values when being lower limit (or lower range) then the value correspondence of remaining parts also be lower limit (or lower range), if also capping (or lower range or median) accordingly of the value of remaining parts then when one of them parts values is the upper limit (or upper range or median).

Owing to adopt technique scheme: the present invention adopts pipe seam formula anchor metal and glass fibre reinforced plastics rockbolts Support Method in the rock of the broken ore deposit of metal mine high-sulfur, effectively improved the safety of linked network speed and initial stage bolt support, guaranteed that also the later stage bolt support has higher anchored force and safety.Wherein adopt pipe seam formula anchor metal to carry out linked network, effectively brought into play the advantage that the installation of pipe seam formula anchor metal is convenient, the fixing metal net is quick effectively, effective initial stage anchored force and supporting reliability can be provided; Adopt the glass fibre reinforced plastics rockbolts supporting can effectively avoid behind the later stage anchor metal corrosion failure influence of stability of the roadway is strengthened the validity of whole bolt support.

The present invention adopts pipe seam formula anchor metal to reduce anchoring initial stage linked network difficulty, and effective initial stage anchoring strength is provided, and has increased the initial stage working security; Adopt the glass fibre reinforced plastics rockbolts supporting to reduce the corrosion failure influence degree, improved the broken ore deposit rock later stage supporting reliability of high-sulfur, be easy to during secondary supporting remove and can effectively guarantee Mine Safety in Production.

Therefore, the present invention has the anchored force height, be not subject to the burn into support cost low, fast the fixing metal net, be easy to when initial stage anchored force, secondary supporting can be provided remove and can effectively guarantee the characteristics of Mine Safety in Production be applicable to the supporting of the broken ore deposit of high-sulfur rock.

Description of drawings

Fig. 1 is a kind of section structure schematic diagram of the present invention;

Fig. 2 is the structural representation of the glass fibre reinforced plastics rockbolts 3 among Fig. 1;

Fig. 3 is the structural representation of the pipe seam formula anchor metal 1 among Fig. 1.

The specific embodiment

The present invention will be further described below in conjunction with the drawings and specific embodiments, is not the restriction to protection domain:

Embodiment 1

A kind of associating anchor rod support method for the broken ore deposit of high-sulfur rock.The associating anchor rod support method is:

As shown in Figure 1: bored bolthole at tunnel wall 4 earlier, wire lath 2 is laid on the tunnel wall 4 that has bored bolthole.

The bolthole on close wire lath 2 four limits that wire lath 2 is covered anchors into pipe seam formula anchor metal 1 respectively again, is pressed on the wire on wire lath 2 four limits fixing metal net 2 with metal tray 9.

All the other boltholes that wire lath 2 is covered inject cement paste then, the glass fiber reinforced plastic body of rod 5 of glass fibre reinforced plastics rockbolts 3 packed into inject the bolthole of cement paste, glass fibre reinforced plastics rockbolts pallet 6 directly is pressed on the wire of wire lath 2, tightens glass fibre reinforced plastics rockbolts nut 7 and presses glass fibre reinforced plastics rockbolts pallet 6.

In above-mentioned associating anchor rod support method:

As shown in Figure 2, glass fibre reinforced plastics rockbolts 3 is made up of the glass fiber reinforced plastic body of rod 5, nut 7 and glass fibre reinforced plastics rockbolts pallet 6.The work structuring of glass fibre reinforced plastics rockbolts 3 is: glass fibre reinforced plastics rockbolts pallet 6 is enclosed within the afterbody of the glass fiber reinforced plastic body of rod 5, and nut 7 is screw-threaded engagement with the glass fiber reinforced plastic body of rod 5; The material of the glass fiber reinforced plastic body of rod 5 is the reinforced plastic glass fibre plastics, and the glass fiber reinforced plastic body of rod 5 is full thread, and the Major Diam of the glass fiber reinforced plastic body of rod 5 is 15mm ~ 20mm.

The material of described glass fiber reinforced plastic pallet 6 is plastics, and the center-hole diameter of pallet 6 is 25mm ~ 30mm, and external diameter is 120mm ~ 140mm.

The material of described nut 7 is plastics, and central through hole is internal thread, and the big footpath of internal thread is with the big footpath of external screw thread of the glass fiber reinforced plastic body of rod 5.

As shown in Figure 3, pipe seam formula anchor metal 1 is made up of anchor rod body 8 and metal tray 9, and material is metal; The work structuring of pipe seam formula anchor metal 1 is: metal tray 9 is enclosed within the afterbody of anchor rod body 8, and anchor rod body 8 produces anchored force with bolthole by friction.

Embodiment 2

A kind of associating anchor rod support method for the broken ore deposit of high-sulfur rock.The associating anchor rod support method is:

As shown in Figure 1: bored bolthole at tunnel wall 4 earlier, wire lath 2 is laid on the tunnel wall 4 that has bored bolthole.

The bolthole on close wire lath 2 four limits that wire lath 2 is covered and the bolthole of central area anchor into pipe seam formula anchor metal 1 respectively again, and the bolthole number of central area is 1 ~ 2; Be pressed on the wire of wire lath 2 four limits and central area fixing metal net 2 with metal tray 9.

All the other boltholes that wire lath 2 is covered inject the anchoring agent then, the glass fiber reinforced plastic body of rod 5 of glass fibre reinforced plastics rockbolts 3 packed into inject the bolthole of anchoring agent, glass fibre reinforced plastics rockbolts pallet 6 directly is pressed on the wire of wire lath 2, tightens glass fibre reinforced plastics rockbolts nut 7 and presses glass fibre reinforced plastics rockbolts pallet 6.

In above-mentioned associating anchor rod support method:

As shown in Figure 2, glass fibre reinforced plastics rockbolts 3 is made up of the glass fiber reinforced plastic body of rod 5, nut 7 and glass fibre reinforced plastics rockbolts pallet 6.The work structuring of glass fibre reinforced plastics rockbolts 3 is: glass fibre reinforced plastics rockbolts pallet 6 is enclosed within the afterbody of the glass fiber reinforced plastic body of rod 5, and nut 7 is screw-threaded engagement with the glass fiber reinforced plastic body of rod 5; The material of the glass fiber reinforced plastic body of rod 5 is the reinforced plastic glass fibre plastics, and the glass fiber reinforced plastic body of rod 5 afterbodys are screw thread, and the Major Diam of the glass fiber reinforced plastic body of rod 5 is 20mm ~ 25mm.

The material of described glass fiber reinforced plastic pallet 6 is metal, and the center-hole diameter of pallet 6 is 30mm ~ 35mm, and external diameter is 130mm ~ 150mm.

The material of described nut 7 is metal, and central through hole is internal thread, and the big footpath of internal thread is with the big footpath of external screw thread of the glass fiber reinforced plastic body of rod 5.

Pipe seam formula anchor metal 1 is with embodiment 1.

Point out in passing: the span of the big footpath of the Major Diam of the glass fiber reinforced plastic body of rod 5 in this specific embodiment, the internal thread of nut 7 and the center-hole diameter of glass fibre reinforced plastics rockbolts pallet 6 is that wherein big value or little value is corresponding one by one, be one of them parts values when being lower limit (or lower range) then the value correspondence of remaining parts also be lower limit (or lower range), if also capping (or lower range or median) accordingly of the value of remaining parts then when one of them parts values is the upper limit (or upper range or median).

This specific embodiment adopts the Support Method of pipe seam formula anchor metal 1 and glass fibre reinforced plastics rockbolts 3 in the rock of the broken ore deposit of metal mine high-sulfur, effectively improved the safety of linked network speed and initial stage bolt support, guaranteed that also the later stage bolt support has higher anchored force and safety.Wherein adopt pipe seam formula anchor metal 1 to carry out linked network, effectively brought into play the advantage that 1 installation of pipe seam formula anchor metal is convenient, the fixing metal net is quick effectively, effective initial stage anchored force and supporting reliability can be provided; Adopt glass fibre reinforced plastics rockbolts 3 supportings can effectively avoid behind the later stage anchor metal corrosion failure influence of stability of the roadway is strengthened the validity of whole bolt support.

This specific embodiment adopts pipe seam formula anchor metal 1 to reduce anchoring initial stage linked network difficulty, and effective initial stage anchoring strength is provided, and has increased the initial stage working security; Adopt glass fibre reinforced plastics rockbolts 3 supportings to reduce the corrosion failure influence degree, improved the broken ore deposit rock later stage supporting reliability of high-sulfur, be easy to during secondary supporting remove and can effectively guarantee Mine Safety in Production.

Therefore, this specific embodiment has the anchored force height, be not subject to the burn into support cost low, fast the fixing metal net, be easy to when initial stage anchored force, secondary supporting can be provided remove and can effectively guarantee the characteristics of Mine Safety in Production be applicable to the supporting of the broken ore deposit of high-sulfur rock.

Claims (3)

1. associating anchor rod support method that is used for the broken ore deposit of high-sulfur rock is characterized in that described associating anchor rod support method is:
Earlier bored bolthole at tunnel wall (4), wire lath (2) has been laid on the tunnel wall (4) that has bored bolthole;
The bolthole on close wire lath (2) four limits that wire lath (2) is covered anchors into pipe seam formula anchor metal (1) respectively again, or the bolthole on close wire lath (2) four limits that again wire lath (2) covered and the bolthole of central area anchor into pipe seam formula anchor metal (1) respectively, and the bolthole number of central area is 1 ~ 2; Be pressed on the wire of wire lath (2) fixing metal net (2) with metal tray (9);
All the other boltholes that wire lath (2) is covered inject cement paste or anchoring agent then, the glass fiber reinforced plastic body of rod (5) of glass fibre reinforced plastics rockbolts (3) packed into inject the bolthole of cement paste or anchoring agent, glass fibre reinforced plastics rockbolts pallet (6) directly is pressed on the wire of wire lath (2), tightens glass fibre reinforced plastics rockbolts nut (7) and presses glass fibre reinforced plastics rockbolts pallet (6);
In above-mentioned associating anchor rod support method:
Glass fibre reinforced plastics rockbolts (3) is made up of the glass fiber reinforced plastic body of rod (5), nut (7) and glass fibre reinforced plastics rockbolts pallet (6); Its work structuring is: glass fibre reinforced plastics rockbolts pallet (6) is enclosed within the afterbody of the glass fiber reinforced plastic body of rod (5), and nut (7) is screw-threaded engagement with the glass fiber reinforced plastic body of rod (5); The material of the glass fiber reinforced plastic body of rod (5) is the reinforced plastic glass fibre plastics, and the glass fiber reinforced plastic body of rod (5) is that full thread or afterbody are screw thread, and the Major Diam of the glass fiber reinforced plastic body of rod (5) is 15mm ~ 25mm;
Pipe seam formula anchor metal (1) is made up of anchor rod body (8) and metal tray (9), and material is metal; Its work structuring is: metal tray (9) is enclosed within the afterbody of anchor rod body (8), and anchor rod body (8) produces anchored force with bolthole by friction.
2. the associating anchor rod support method for the broken ore deposit of high-sulfur rock according to claim 1, the material that it is characterized in that described glass fiber reinforced plastic pallet (6) is plastics or metal, and the center-hole diameter of pallet (6) is 25mm ~ 35mm, and external diameter is 120mm ~ 150mm.
3. the associating anchor rod support method for the broken ore deposit of high-sulfur rock according to claim 1, the material that it is characterized in that described nut (7) is plastics or metal, and central through hole is internal thread, and the big footpath of internal thread is with the big footpath of external screw thread of the glass fiber reinforced plastic body of rod (5).
CN201310223077.0A 2013-06-06 2013-06-06 Anchor-rod-combined supporting method for high-sulfur crush rock mine CN103277124B (en)

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