CN205663447U - Novel anchor net spouts compound supporting construction - Google Patents

Abstract

Whole is merged into with stock, anchor rope, polyester fiber mesh, metal mesh, concrete to the characteristic of this technical patent, absorbs the advantage of ground large -span net shell structure, makes a special novel anchor net and spouts supporting construction. The unchangeable characteristics of having behind light in weight, softness, difficult ageing, pile things on nature of combined material netting gear that polyester fiber mesh and metal mesh are constituteed. It is one kind and moves about freely and quickly the netting structure who all has higher bearing capacity in two orientations, and net piece biaxial stretching forms orthogonal muscle and rib, enables to net pressure that the piece bore like this and passes through the effectual transmission of node and give muscle and rib all around, and to a great extent has heightened the holistic bearing capacity of structure, is difficult to lead to the fact the fracture of muscle and rib. It still has the flexibility, has the effect of pressure release, can adapt to the deformation of country rock to the pressure of surrounding rock who makes the tunnel reduces. This patent not only reasonable in design, bear the weight of the dynamic height, the wholeness is strong, simple process in addition, low cost is a good novel supporting construction.

Description

A kind of novel Bolt net and jet composite supporting construction

Technical field

The technology of the present invention patent is the supporting construction of the excellent Bolt net and jet of a kind of mine working, especially can be suitably used for deep-well Roadway in high strata pressure, across adopting workings subject to dy namic pressure, bump tunnel, soft-rock tunnel and longspan tunnel.

Background technology

Along with the continuous exploitation of China's mine resources, the close exhaustion of mine resources that mining conditions is superior, this is with regard to meaning The exploitation later mine has in the environment of deep, features as poor geologic condition carry out.Along with high stress and soft rock mine roadway quantity Be continuously increased, corresponding supporting measure to be updated and to strengthen.At present, the support technology of deep-well high stress and soft rock mine roadway has A lot, wherein Bolt net and jet technology and U-shaped steel collapsible timbering technology are most widely used.

Bolt-mesh-spurting supporting system is anchor pole, wire netting, adds the abbreviation of gunite concrete, and this support system simple in construction is executed Work is convenient, it is easy to mechanized construction, and material usage is little, the economical and practical first-selected support pattern being usually enterprise.But, should Supporting construction is only to have added one layer of reinforced mesh on the basis of bolt-spary supports, is difficult to meet the earth pressure, roadway with large deformation Supporting requirement.Bolt-mesh-spurting supporting structure typically to carry out combined supporting with anchor cable, shape steel bracket or grouting and reinforcing etc., so with Not only add support cost, and construction technology becomes loaded down with trivial details, increases construction intensity.

So, it is conceived to improve the shortcoming of conventional metals net, advances its technological improvement, on the basis of bolt-mesh-spurting supporting technology On, we study mining supports composite net and polyester fiber net, and it is that with composite, steel wire is used certain technique Process, in the ability of globality, intensity, tensile property and deformation controlling for rock surrounding gateways, have than other type of tradition Supporting mesh comprehensive advantage more very.The advantage drawing bolt-mesh-spurting supporting structure, makes improvements, and increases on the basis of original Two-layer composite net, is combined into composite anchored net supporting construction, compensate for the deficiency of common bolt-mesh-spurting supporting, increase substantially The bearing capacity of supporting construction, has broad application prospects.

Utility model content

The roadway surrounding rock Treatment process problem that patent of the present invention is to be solved is to provide a kind of novel Bolt net and jet composite support knot Structure, its simple in construction, easy construction, bearing capacity is high, and supporting is stable, low cost.

Concrete technical solution is as follows:

A kind of novel Bolt net and jet composite supporting construction, by polyester fiber net (1), wire netting (2), anchor pole (3), anchor cable (4), Concrete (5) five part forms.First construction certain length and the anchor pole of distribution and anchor cable, cooperatively form compound with rock mass Body, then lays polyester fiber net and wire netting, last gunite concrete, closes country rock surface, resist pressure from surrounding rock.Top board and Anchor pole model Φ 22 used by lateral wall, an array pitch is 800 × 800mm；Anchor cable model used is Φ 22, a length of 6500mm, an array pitch It is 1600 × 2400mm.Polyester fiber net used, mesh form is arc limit rectangle, and size of mesh opening is 15mm；Metal mesh shape For rhombus, size of mesh opening is 100 × 200mm；And lay with the form of two layers polyester fiber network folder layer of metal net, overlap joint net is long Degree is 200mm.Polyester fiber net and wire netting used by underwall are whole net, and are 500mm with the lateral wall lap of splice；Anchor pole used Model is Φ 22, a length of 2500mm, and an array pitch is 700 × 700mm, and two FLOOR ANCHOR and horizontal sextant angle are 45 °.

The effect of the art of this patent is:

1. this supporting construction had both had the advantage of rigid protection structure, can bear powerful pressure loosely, have again flexibility The advantage of supporting construction, can allow country rock certain deformation occur, again can and limit country rock excessive deformation and occur loosening.

2. this technology construction safety, technique are simply, the entirety that novel Bolt net and jet composite supporting construction interacts with country rock Property good, mine tunnel engineering deforms little after reprocessing, it is possible to meet safety in production needs.

3. the composite net of polyester fiber net and wire netting composition have lightweight, soft, be difficult to property after aging, pile things on Constant feature.It is the mesh sheet structure having relatively high bearing capacity on a kind of two directions in length and breadth, and mesh sheet biaxial tension is formed mutually Perpendicular muscle and rib, the pressure that mesh sheet so can be made to bear effectively passes to muscle and the rib of surrounding, very great Cheng by node Heighten on degree and finish the bearing capacity that structure is overall, it is not easy to cause the fracture of muscle and rib.It also has flexibility, has the work of pressure release With, it is possible to the deformation of suitable for surrounding rock, so that the pressure from surrounding rock in tunnel reduces.

Accompanying drawing explanation

With embodiment, the art of this patent is further illustrated below in conjunction with the accompanying drawings.

Fig. 1 is that novel Bolt net and jet composite supporting construction implements legend.

1. polyester fiber net, 2. wire netting, 3. anchor pole, 4. anchor cable, 5. concrete in figure.

Fig. 2 is that novel Bolt net and jet composite supporting construction (top board, lateral wall) launches detail drawing.1. anchor pole in figure, 2. anchor cable, 3. poly- Ester fiber net and wire netting, 4. concrete

Fig. 3 is wire netting detail drawing.

Fig. 4 is polyester fiber net detail drawing.

Detailed description of the invention

Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.

In the embodiment shown in fig. 1, polyester fiber net (1), wire netting (2), anchor pole (3), anchor cable (4), concrete (5). First construction certain length and the anchor pole of distribution and anchor cable, cooperatively forms complex with rock mass, and paving hangs top board, then lays multiple Condensation material net, last gunite concrete, close country rock surface, resist pressure from surrounding rock.In top board and with lateral wall junction, compound The web material lap of splice is 200mm.Underwall is 500mm with the lap of splice of lateral wall composite net.Above-mentioned composite net For two layers polyester fiber network folder layer of metal net.

Claims (5)

1. a novel Bolt net and jet composite supporting construction, it is characterised in that: by polyester fiber net (1), wire netting (2), anchor pole (3), anchor cable (4), concrete (5) five part forms；During construction, ground is squeezed into anchor pole (3), anchor cable (4), then hangs one Strata ester fiber net (1), hangs layer of metal net (2), then hangs strata ester fiber net (1), last gunite concrete (5)； Anchor pole (3) and anchor cable (4), connect with iron wire between polyester fiber net (1) and wire netting (2) for welding with wire netting (2) junction Connect, and lap-joint's iron wire connects number no less than 10.

One the most according to claim 1 novel Bolt net and jet composite supporting construction, it is characterised in that: anchor pole model used is Φ 22, a length of 2500mm, array pitch 800 × 800mm；Anchor cable model used is Φ 22, a length of 6500mm, an array pitch is 1600 × 2400mm。

One the most according to claim 1 novel Bolt net and jet composite supporting construction, it is characterised in that: polyester fiber used Net, mesh form is arc limit rectangle, and size of mesh opening is 15mm；Metal mesh shape is rhombus, and size of mesh opening is 100 × 200mm.

One the most according to claim 1 novel Bolt net and jet composite supporting construction, it is characterised in that: with two layers polyester fiber The form of network folder layer of metal net is laid, and whole drift section mesh sheet is laid and had 4 sections, one section of top mesh sheet, at the bottom of a section Expanded metals sheet and two sections of lateral wall mesh sheet, top mesh sheet is 200mm with the lap of splice of lateral wall mesh sheet.

One the most according to claim 1 novel Bolt net and jet composite supporting construction, it is characterised in that: base plate mesh sheet and lateral wall The lap of splice of mesh sheet is 500mm；Base plate anchor pole model is Φ 22, a length of 2500mm, and an array pitch is 700 × 700mm, base plate anchor In bar, two side portion's anchor poles will obliquely 45^°Squeeze into.