CN103277124B - 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
CN103277124B
CN103277124B CN201310223077.0A CN201310223077A CN103277124B CN 103277124 B CN103277124 B CN 103277124B CN 201310223077 A CN201310223077 A CN 201310223077A CN 103277124 B CN103277124 B CN 103277124B
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China
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anchor
rod
metal
glass fibre
fibre reinforced
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CN201310223077.0A
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Chinese (zh)
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CN103277124A (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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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 high-sulfur broken ore deposit rock

Technical field

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

Background technology

In the exploitation of metal current mine underground, conventional bolt support mainly contains, and anchor rod with cement mortar, resin anchor, pipe-seam type anchor rod etc., its material is made up of 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.On-the-spot in supporting, need to select rational support form according to on-the-spot ore deposit rock geological conditions.

But along with the increase of the mining degree of depth, the deterioration of mining geology condition and ore deposit rock physicochemical properties complicated and changeable, also there is following problem in these metal material anchor poles that metal mine is conventional and support form: anchored force is low in Bracing Process; Easily lost efficacy by corrosion occurs Geological Environment Influence; Carry out not easily removing anchor metal when repair for 2nd time is safeguarded after roadway deformation destroys.Adopt glass fibre reinforced plastics rockbolts supporting effectively can eliminate ore deposit rock sulfide to the corrosiveness of anchor pole, thus improve Effects of Supporting.As applicant the name of applying for be called and efficiently solve the patent of invention of " a kind of metal mine anchor rod support method (ZL201010221581.3) " metal mine and adopt Problems existing in anchor metal supporting.But this technology uses in rock soft broken area, ore deposit exists significantly deficiency, be mainly reflected in and adopt separately glass fibre reinforced plastics rockbolts supporting be difficult to quick fixing metal net and reach anchoring strength fast, thus initial stage construction safety requirement can not be met, bring potential safety hazard to the anchor net construction operation at supporting initial stage.

In sum, metal mine adopt when simple metals anchor pole and corresponding support pattern supporting thereof have that anchored force is low, corrosion-vulnerable lost efficacy, support cost is high, secondary supporting time the not problem such as easy-clear; And initial stage linked network is difficult, initial stage anchored force is low and the drawback of poor stability to adopt glass fibre reinforced plastics rockbolts supporting also to exist.

Summary of the invention

The present invention is intended to overcome prior art defect, object be to provide a kind of anchored force high, be not subject to burn into support cost low, can fast fixing metal net, the associating anchor rod support method for high-sulfur broken ore deposit rock being easy to remove and can effectively ensure 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:

First on the wall of tunnel, bore bolthole, wire lath has been laid on and has bored on the tunnel wall of bolthole.

Again pipe seam formula anchor metal is anchored into respectively to the bolthole on close wire lath four limit that wire lath covers, or the bolthole on close wire lath four limit covered wire lath again and the bolthole of central area anchor into pipe seam formula anchor metal respectively, the bolthole number of central area is 1 ~ 2; Be pressed on the wire of wire lath by metal tray, fixing metal net.

Then cement paste or Anchor Agent are injected to all the other boltholes that wire lath covers, the glass fiber reinforced plastic body of rod of glass fibre reinforced plastics rockbolts is loaded the bolthole having injected cement paste or Anchor Agent, glass fibre reinforced plastics rockbolts pallet is directly pressed on the wire of wire lath, tightens glass fibre reinforced plastics rockbolts nut and presses 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: 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 reinforced plastic glass fibre plastics, and the glass fiber reinforced plastic body of rod is full thread or afterbody is 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 rubbing.

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 large footpath of internal thread is with the large footpath of external screw thread of the glass fiber reinforced plastic body of rod.

Conveniently: the value span of the large 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 large value wherein or little value one_to_one corresponding, namely when one of them parts values is lower limit (or lower range) then the value of remaining parts corresponding also for lower limit (or lower range), if when one of them parts values is the upper limit (or upper range or median), the value of remaining parts also capping (or lower range or median) accordingly.

Owing to adopting technique scheme: the present invention adopts pipe seam formula anchor metal and glass fibre reinforced plastics rockbolts Support Method in the rock of metal mine high-sulfur broken ore deposit, effectively improve the safety of linked network speed and initial stage bolt support, also ensure that later stage bolt support has higher anchored force and safety.Wherein adopt pipe seam formula anchor metal to carry out linked network, effectively play the advantage that the installation of pipe seam formula anchor metal is convenient, fixing metal net is quick effectively, can provide effective initial stage anchored force and supporting reliability; Adopt the impact that glass fibre reinforced plastics rockbolts supporting can effectively be avoided on Drift stability after later stage anchor metal corrosion failure, strengthen the validity of overall bolt support.

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

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

Accompanying drawing explanation

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 in Fig. 1;

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

Detailed description of the invention

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

embodiment 1

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

As shown in Figure 1: first on tunnel wall 4, bored bolthole, wire lath 2 has been laid on and has bored on the tunnel wall 4 of bolthole.

Again pipe seam formula anchor metal 1 is anchored into respectively to the bolthole on close wire lath 2 four limit that wire lath 2 covers, be pressed on by metal tray 9 on the wire on wire lath 2 four limit, fixing metal net 2.

Then cement paste is injected to all the other boltholes that wire lath 2 covers, the glass fiber reinforced plastic body of rod 5 of glass fibre reinforced plastics rockbolts 3 is loaded the bolthole injecting cement paste, glass fibre reinforced plastics rockbolts pallet 6 is directly 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 and the glass fiber reinforced plastic body of rod 5 are screw-threaded engagement; The material of the glass fiber reinforced plastic body of rod 5 is 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 large footpath of internal thread is with the large 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 rubbing.

embodiment 2

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

As shown in Figure 1: first on tunnel wall 4, bored bolthole, wire lath 2 has been laid on and has bored on the tunnel wall 4 of bolthole.

The bolthole on close wire lath 2 four limit covered wire lath 2 again 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 four limit and central area by metal tray 9, fixing metal net 2.

Then Anchor Agent is injected to all the other boltholes that wire lath 2 covers, the glass fiber reinforced plastic body of rod 5 of glass fibre reinforced plastics rockbolts 3 is loaded the bolthole injecting Anchor Agent, glass fibre reinforced plastics rockbolts pallet 6 is directly 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 and the glass fiber reinforced plastic body of rod 5 are screw-threaded engagement; The material of the glass fiber reinforced plastic body of rod 5 is reinforced plastic glass fibre plastics, and the glass fiber reinforced plastic body of rod 5 afterbody is 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 large footpath of internal thread is with the large 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.

Conveniently: the span of the Major Diam of the glass fiber reinforced plastic body of rod 5 in this detailed description of the invention, the large footpath of the internal thread of nut 7 and the center-hole diameter of glass fibre reinforced plastics rockbolts pallet 6 is large value wherein or little value one_to_one corresponding, namely when one of them parts values is lower limit (or lower range) then the value of remaining parts corresponding also for lower limit (or lower range), if when one of them parts values is the upper limit (or upper range or median), the value of remaining parts also capping (or lower range or median) accordingly.

This detailed description of the invention adopts the Support Method of pipe seam formula anchor metal 1 and glass fibre reinforced plastics rockbolts 3 in the rock of metal mine high-sulfur broken ore deposit, effectively improve the safety of linked network speed and initial stage bolt support, also ensure that later stage bolt support has higher anchored force and safety.Wherein adopt pipe seam formula anchor metal 1 to carry out linked network, effectively played pipe seam formula anchor metal 1 install convenient, fixing metal net fast effectively, the advantage of effective initial stage anchored force and supporting reliability can be provided; Adopt the impact that glass fibre reinforced plastics rockbolts 3 supporting can effectively be avoided on Drift stability after later stage anchor metal corrosion failure, strengthen the validity of overall bolt support.

This detailed description of the invention adopts pipe seam formula anchor metal 1 to reduce anchoring initial stage linked network difficulty, and provides effective initial stage anchoring strength, adds initial stage working security; Adopt glass fibre reinforced plastics rockbolts 3 supporting to reduce corrosion failure influence degree, improve the broken ore deposit rock later stage supporting reliability of high-sulfur, be easy to during secondary supporting remove and effectively can ensure Mine Safety in Production.

Therefore, this detailed description of the invention have anchored force high, be not subject to burn into support cost low, can fast fixing metal net, the feature being easy to remove and can effectively ensure Mine Safety in Production when initial stage anchored force, secondary supporting can be provided, be applicable to the supporting of high-sulfur broken ore deposit rock.

Claims (3)

1., for an associating anchor rod support method for high-sulfur broken ore deposit rock, it is characterized in that described associating anchor rod support method is:
First on tunnel wall (4), bore bolthole, wire lath (2) has been laid on and has bored on the tunnel wall (4) of bolthole;
Again pipe seam formula anchor metal (1) is anchored into respectively to the bolthole on close wire lath (2) four limit that wire lath (2) covers, or the bolthole on close wire lath (2) four limit covered wire lath (2) again and the bolthole of central area anchor into pipe seam formula anchor metal (1) respectively, the bolthole number of central area is 1 ~ 2; Be pressed on the wire of wire lath (2) by metal tray (9), fixing metal net (2);
Then cement paste or Anchor Agent are injected to all the other boltholes that wire lath (2) covers, the glass fiber reinforced plastic body of rod (5) of glass fibre reinforced plastics rockbolts (3) is loaded the bolthole having injected cement paste or Anchor Agent, glass fibre reinforced plastics rockbolts pallet (6) is directly 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), glass fibre reinforced plastics rockbolts 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 glass fibre reinforced plastics rockbolts nut (7) and the glass fiber reinforced plastic body of rod (5) are screw-threaded engagement; The material of the glass fiber reinforced plastic body of rod (5) is reinforced plastic glass fibre plastics, the glass fiber reinforced plastic body of rod (5) for full thread or afterbody be screw thread, 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 rubbing.
2. the associating anchor rod support method for high-sulfur broken ore deposit rock according to claim 1, the material that it is characterized in that described glass fibre reinforced plastics rockbolts pallet (6) is plastics or metal, the center-hole diameter of glass fibre reinforced plastics rockbolts pallet (6) is 25mm ~ 35mm, and external diameter is 120mm ~ 150mm.
3. the associating anchor rod support method for high-sulfur broken ore deposit rock according to claim 1, the material that it is characterized in that described glass fibre reinforced plastics rockbolts nut (7) is plastics or metal, central through hole is internal thread, and the large footpath of internal thread is identical with the large 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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CN106050283B (en) * 2016-05-14 2018-02-06 西安科技大学 A kind of three soft coal layer re-exploration laneway support design method and device

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