CN205277438U - Cast -in -place continuous concrete support - Google Patents
Cast -in -place continuous concrete support Download PDFInfo
- Publication number
- CN205277438U CN205277438U CN201520957166.2U CN201520957166U CN205277438U CN 205277438 U CN205277438 U CN 205277438U CN 201520957166 U CN201520957166 U CN 201520957166U CN 205277438 U CN205277438 U CN 205277438U
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- shell
- support
- cast
- concrete
- mould bag
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- Withdrawn - After Issue
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Abstract
The utility model provides a cast -in -place continuous concrete support, it comprises geotechnological mould bag shell and intussuseption fibre concrete, and wherein, geotechnological mould bag shell constitutes by bearing the support shell and connecting the crossbeam shell, and the shape and the tunnel of bearing the support shell just serve as a contrast the cross -section phase -match, and the grout hole is established to its lower part, connects the crossbeam shell and is located bearing between the support shell of both sides, bears the support shell and connect the crossbeam shell to sew up together just inside intercommunication. Its installation method does, and anchor net spouts to strut accomplishes the back, with geotechnological mould bag shell in design position expansion, then fill the fibre concrete toward the geotechnological mould bag shell in through the grout hole, fill accomplish after the shutoff grout hole. This device simple installation, wholeness are good, and the cost of manufacture is low, extensive applicability is general, can improve strutting the effect and strutting efficiency of colliery soft rock tunnel greatly.
Description
Technical field
The utility model relates to a kind of novel support apparatus for mine supporting, particularly relates to a kind of cast-in-place continuous concrete support for coal mine roadway soft rock supporting.
Background technology
Under China's central and east part mine resources faces exhausted situation, for ensureing the Sustainable high yield of coal mining, coal main producing region is just progressively shifted to the ground such as Inner Mongol and Xinjiang. West area coal resources reserves enrich, but geologic condition but also exists bigger difference compared with area, the central and east, the mining area K exploited, Jurassic stratum find extensively there is a weak cementing soft rock of class argillization, its degree of consolidation is poor, intensity is low, easy-weathering, chance cement or expansion, bring great difficulty to colliery tunnel support, seriously constrain safety, the High-efficient Production in colliery.
In roadway support, now conventional U-shaped steel yieldable support, its working resistance is determined by the friction resistance of Support joint, and the friction resistance at this place depends on the locking degree of card cable. Domestic yieldable support generally adopts bolt matable card cable, and owing to lacking special power spanner, the locking force of card cable can not be guaranteed, and causes working resistance of support low, can only reach about the 50% of its ultimate bearing capacity. In addition, U-shaped steel yieldable support has the features such as thin-walled metal construction insufficient rigidity, externally loading ratio are more responsive, poor plasticity, and when the weak cementing soft rock of the argillization running into character extreme difference, supporting effect can be had a greatly reduced quality. And the high stress very soft rock roadway for some complexity, adopt the method for U-shaped steel supporting to be difficult to ensure the stability of country rock especially.
In order to overcome the above-mentioned deficiency of U-shaped steel yieldable support in soft rock roadway support, roadway support technology has been explored and has been innovated by some scholars. Chinese invention patent CN1959063B disclose one can contracting formula steel pipe concrete bracket, comprise plurality of sections of steel pipes, adjacent two joint steel pipes between be interconnected by pipe connecting, steel duct load concrete. Have that structure is simple, support capacity is strong, good stability, by the rational advantage of power. But, it is rigidity due to pipe body and quality is very big, adds deep-well tunnel internal medium complicated, equipment conveying can be run into many troubles to when propping up mask. In addition, field assembly is needed, complicated operation when this device is installed.
It is therefore desirable to explore one can ensure supporting effect, the soft rock roadway support form of convenient transportation, installation simplicity again.
Summary of the invention
For existing for the above-mentioned deficiency of deep-well or the support form in soft rock large deformation tunnel, the utility model provides the cast-in-place continuous concrete support that a kind of principle is simple, installation is easy, suitability is extensive, cost of manufacture is low.
A kind of cast-in-place continuous concrete support of the utility model, it is made up of geotechnical fabric bag shell and interior fibrous concrete of filling out, it is characterized in that, described geotechnical fabric bag shell is by carrying rack shell and connecting cross beam shell is formed, shape, the size of carrying rack shell are all mated mutually with the cross section in tunnel, grout hole is established in its underpart, and connecting cross beam shell is between the carrying rack shell of both sides, and connecting cross beam shell is stitched together with carrying rack shell and inside is connected.
Described geotechnical fabric bag shell, it makes material is through flame-retardant modified geotechnical fabric bag.
The installation method of described a kind of cast-in-place continuous concrete support is: roadway excavation uses Bolt net and jet to carry out initial stage supporting after completing, and is launched in design position by geotechnical fabric bag shell subsequently; In geotechnical fabric bag shell, fibrous concrete is poured into, until concrete support is shaping by grout hole; Pour into rear plugging grouting hole, installation.
A kind of cast-in-place continuous concrete support tool of the utility model has the following advantages:
(1) a kind of cast-in-place continuous concrete support of the utility model, its shell is made up of geotechnical fabric bag material, light weight and collapsible, convenient transport;
(2) the geotechnical fabric bag enclosure of the utility model device is connected completely, and after pouring into concrete, whole support becomes a continuous print entirety, and supporting construction has good globality;
(3) the utility model device geotechnical fabric bag shell has certain water-permeable, and after pouring into concrete, unnecessary moisture is oozed out by fabric void, can rapid reduction water cement ratio, shorten concrete setting time, increase concrete intensity;
(4) shape and size of the utility model device geotechnical fabric bag shell, can sew especially according to engineering exploration data, are adapted to all kinds of engineering situation;
(5) concrete filled of the utility model device is fibrous concrete, has the tension higher than normal concrete and beaming resistance limit intensity, more adapts to the inner complicated ambient stress of mine;
(6) only need to launching directly to pour into fibrous concrete by geotechnical fabric bag shell when the utility model device is installed, pour into rear plugging grouting hole, installation process is simple and convenient;
(7) material needed for the utility model device is fibrous concrete and geotechnical fabric bag, draws materials easily, makes simple, and cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of cast-in-place continuous concrete support of the utility model.
Fig. 2 is the supporting schematic diagram of a kind of cast-in-place continuous concrete support of the utility model.
Fig. 3 is the schematic cross-section of a kind of cast-in-place continuous concrete support of the utility model.
Marginal data: 1-carries rack shell; 2-connecting cross beam shell; 3-grout hole; 4-roadway surrounding rock; 5-reinforcing mat; 6-sprayed concrete; 7-anchor pole; The cast-in-place continuous concrete support of 8-mono-kind; 9-geotechnical fabric bag shell; 10-fibrous concrete; 11-nylon rope.
Embodiment
Below in conjunction with accompanying drawing and example, the utility model is described further.
As Figure 1-3, a kind of cast-in-place continuous concrete support 8 of the utility model, comprises geotechnical fabric bag shell 9 and interior fills out fibrous concrete 10. Described geotechnical fabric bag shell 9 is made up of carrying rack shell 1 and connecting cross beam shell 2; The shape of described carrying rack shell 1 is mated mutually with Chu Chen cross section, tunnel, and grout hole 3 is established in its underpart; Connecting cross beam shell 2 is between the carrying rack shell 1 of both sides, and carrying rack shell 1 is stitched together with connecting cross beam shell 2 and inside is connected.
Described geotechnical fabric bag shell 9, connects with the nylon rope 11 of two row's certain lengths between its levels, the thickness of bracket cross section during to control filling.
The making material of described geotechnical fabric bag shell 9 is through flame-retardant modified geotechnical fabric bag, and the size of its each several part can be determined according to engineering is actual.
The installation method of described a kind of cast-in-place continuous concrete support 8 is: roadway excavation uses Bolt net and jet to carry out initial stage supporting after completing, and is launched in design position by geotechnical fabric bag shell 9 subsequently; By grout hole 3 toward perfusion fibrous concrete 10 in geotechnical fabric bag shell 9; Pour into rear plugging grouting hole 3, installation. Support installing to be sprinkled water after completing maintenance in time, makes fibrous concrete 10 reach maximum intensity.
Claims (1)
1. a cast-in-place continuous concrete support, it is made up of geotechnical fabric bag shell and interior fibrous concrete of filling out, it is characterized in that, described geotechnical fabric bag shell is by carrying rack shell and connecting cross beam shell is formed, shape, the size of carrying rack shell are all mated mutually with the cross section in tunnel, grout hole is established in its underpart, and connecting cross beam shell is between the carrying rack shell of both sides, and connecting cross beam shell is stitched together with carrying rack shell and inside is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520957166.2U CN205277438U (en) | 2015-11-26 | 2015-11-26 | Cast -in -place continuous concrete support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520957166.2U CN205277438U (en) | 2015-11-26 | 2015-11-26 | Cast -in -place continuous concrete support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205277438U true CN205277438U (en) | 2016-06-01 |
Family
ID=56062021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520957166.2U Withdrawn - After Issue CN205277438U (en) | 2015-11-26 | 2015-11-26 | Cast -in -place continuous concrete support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205277438U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298514A (en) * | 2015-11-26 | 2016-02-03 | 山东科技大学 | Cast-in-place continuous concrete support and installation method thereof |
-
2015
- 2015-11-26 CN CN201520957166.2U patent/CN205277438U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298514A (en) * | 2015-11-26 | 2016-02-03 | 山东科技大学 | Cast-in-place continuous concrete support and installation method thereof |
| CN105298514B (en) * | 2015-11-26 | 2017-12-12 | 山东科技大学 | A kind of cast-in-place continuous concrete support and its installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160601 Effective date of abandoning: 20171212 |
|
| AV01 | Patent right actively abandoned |