CN103485794B - Composite ingate supporting structure and construction method thereof - Google Patents
Composite ingate supporting structure and construction method thereof Download PDFInfo
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- CN103485794B CN103485794B CN201310450319.XA CN201310450319A CN103485794B CN 103485794 B CN103485794 B CN 103485794B CN 201310450319 A CN201310450319 A CN 201310450319A CN 103485794 B CN103485794 B CN 103485794B
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Abstract
The invention provides a composite ingate supporting structure and a construction method thereof. The method includes the steps: during construction of an ingate, adopting anchor net and cable shotcreting for primary support so as to form a primary supporting structure; covering the surface of the primary supporting structure with multiple section steel brackets; spraying concrete to fill and level up the surfaces of the section steel brackets so as to form a repeatedly-sprayed concrete layer; paving compressible materials on the repeatedly-sprayed concrete layer to form a compressible layer; casting reinforcement steel fiber concrete masonry on the compressible layer. On the basis of the primary supporting structure of the ingate, a secondary supporting structure is added, so that strength of the ingate supporting structure can be greatly enhanced, and the ingate supporting structure is particular suitable for special conditions that a coal mine shaft is located in thick surface soil and thin bedrock.
Description
Technical field
The present invention relates to coal mine construction field, specifically, the present invention relates to a kind of ingate composite supporting construction and construction method thereof.
Background technology
Ingate is as the junction in pit shaft and tunnel, parking lot, and its stress is very complicated, and under particularly ingate is positioned at the specific condition of thick surface soil, thin bedrock, big cross section horse-head ingate influence basin is large, stress is concentrated serious.By follow-up lane cave construction infection, country rock is subject to repeatedly disturbance, and distortion produces unstability greatly, easily, causes ingate Support structure damage.Because rock section is thin, the wall base of the topsoil section borehole wall is close to ingate, and therefore ingate Support structure damage can cause again the native section shaft wall fracture of table, jeopardizes mine safety.At present, existing multiple pit shaft causes the engineering accident of flooding well because the construction of ingate place is repaired etc.
Summary of the invention
The object of the present invention is to provide a kind of ingate composite supporting construction and construction method thereof, the big cross section ingate place country rock generation large deformation existed to solve prior art causes the problem showing native section shaft lining breakage.
In order to solve the problem, the invention provides a kind of construction method of ingate composite supporting construction, its technical scheme is as follows:
A construction method for ingate composite supporting construction, comprises the following steps: during to horse-head ingate, adopts Bolt net and jet rope once supporting, forms once supporting structure; Wherein, further comprising the steps of: at surface coverage many root type steel bracket of described once supporting structure; Described shape steel bracket surface is filled and led up by sprayed mortar, forms the multiple spray-up of concrete; The multiple spray-up of described concrete lays compressible material, forms compressible stratum; Pouring reinforcement steel fibrous concrete arch body on described compressible stratum.
According to a kind of preferred embodiment of the construction method of above-mentioned ingate composite supporting construction, wherein, described shape steel bracket is double-layer heavy stacked U36 shaped steel, and after the multiple spray-up of the described concrete of formation, also carries out grouting filling to after the wall of described shape steel bracket.
According to a kind of preferred embodiment of the construction method of above-mentioned ingate composite supporting construction, wherein, described steel fiber reinforced concrete arch body is for adopting CF60 concreting.
According to a kind of preferred embodiment of the construction method of above-mentioned ingate composite supporting construction, wherein, described compressible stratum is the thick foamed plastics interlayer of 20mm.
According to a kind of preferred embodiment of the construction method of above-mentioned ingate composite supporting construction, wherein, when horse-head ingate, take construction in layer from the top down, described shape steel bracket vertically distributes, and according to hierarchy number, described shape steel bracket is divided into corresponding joint number.
According to a kind of preferred embodiment of the construction method of above-mentioned ingate composite supporting construction, wherein, when each construction in layer, the described shape steel bracket lower end of each layering hot work in progress is provided with waist rail, to provide support to described shape steel bracket, and the lower end of described shape steel bracket of a upper layering of described waist rail and the upper end of the described shape steel bracket of next layering are connected to upper surface, the soffit of described waist rail.
According to a kind of preferred embodiment of the construction method of above-mentioned ingate composite supporting construction, wherein, described waist rail is fixed in the country rock of ingate by multiple anchoring piece.
According to a kind of preferred embodiment of the construction method of above-mentioned ingate composite supporting construction, wherein, described waist rail is i beam.
According to a kind of preferred embodiment of the construction method of above-mentioned ingate composite supporting construction, wherein, described anchoring piece is drill rod holder.
According to a kind of preferred embodiment of the construction method of above-mentioned ingate composite supporting construction, wherein, it is further comprising the steps of: after described waist rail is set, both sides, ingate end connect between the described waist rail of sustained height to support beam, described to support beam with above described shape steel bracket between be connected raker beam, to form space structure; After the steel fiber reinforced concrete arch body of building reaches some strength, described to support beam and raker beam in cutting ingate clear space.
In order to solve the problem, the invention provides a kind of ingate composite supporting construction, its technical scheme is as follows:
A kind of ingate composite supporting construction, comprises the once supporting structure adopting Bolt net and jet rope; Wherein, also comprise: many root type steel bracket, be covered in the surface of described once supporting structure; The multiple spray-up of concrete, is formed at described shape steel bracket surface, for being filled and led up on described shape steel bracket surface; Compressible stratum, is layed on the multiple spray-up of described concrete; Steel fiber reinforced concrete arch body, is located on described compressible stratum.
According to a kind of preferred embodiment of above-mentioned ingate composite supporting construction, wherein, described shape steel bracket is double-layer heavy stacked U36 shaped steel, and described compressible stratum is the thick foamed plastics interlayer of 20mm.
According to a kind of preferred embodiment of above-mentioned ingate composite supporting construction, wherein, described shape steel bracket, concrete spray coating, compressible stratum from the top down layering are arranged, and described shape steel bracket vertically distributes, and the joint number of described shape steel bracket is equal with hierarchy number; The waist rail of cross direction profiles is provided with between adjacent two-layer described shape steel bracket.
By upper analysis, the present invention, on the basis of ingate once supporting structure, has set up secondary supporting space structures, greatly can improve the intensity of ingate supporting and protection structure, is particularly suitable for the specific condition that mine shaft ingate is positioned at thick surface soil, thin bedrock.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional drawing of the ingate composite supporting construction adopting preferred embodiment of the present invention construction;
Fig. 2 is the transverse cross-sectional view of the ingate composite supporting construction adopting preferred embodiment of the present invention construction.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
As Figure 1-Figure 2, the ingate composite supporting construction via preferred embodiment of the present invention construction comprises once supporting structure and secondary supporting structure, and specifically, once supporting structure comprises anchor pole 1, anchor cable, steel mesh reinforcement 2, spray-up.Secondary supporting structure then comprises shape steel bracket 3, concrete multiple spray-up 4, compressible stratum 5, steel fiber reinforced concrete arch body 6, waist rail 7.
Again as depicted in figs. 1 and 2, when the ingate 100 being positioned at pit shaft 110 both sides is constructed, roughly following steps can be taked.But the present invention is not limited thereto, accommodation can be carried out to construction technology of the present invention according to concrete geological conditions.
First, employing anchor bar/anchor cable 1, steel mesh reinforcement/spray-up 2 carry out once supporting construction from top to bottom, form the once supporting structure with anchor, net, spray, rope.
Then, at steel mesh reinforcement/spray-up 2 surface coverage many root type steel bracket 3 of once supporting structure.
Shape steel bracket 3 set up complete after, on shape steel bracket 3, shape steel bracket 3 surface is filled and led up by sprayed mortar, forms the multiple spray-up 4 of concrete simultaneously.
Then, the multiple spray-up 4 of concrete lays compressible material, forms compressible stratum 5.
Finally, pouring reinforcement steel fibrous concrete arch body 6 on compressible stratum 5.
In the preferred embodiment, shape steel bracket 3 is double-layer heavy stacked U36 shaped steel, and also namely two U36 shaped steel are stacked together, to increase structural strength.Steel fiber reinforced concrete arch body 6 adopts CF60 concreting, and compressible stratum 5 is the thick foamed plastics interlayer of 20mm.Certainly, the material of other embodiments of the invention is not limited thereto, other any materials meeting the demand of corresponding geological conditions.
Because shape steel bracket 3 is U36 shaped steel, it has a deep trouth, and in order to gain in strength, this preferred embodiment, when the multiple spray-up 4 of formation concrete, also carries out grouting filling to after the wall of shape steel bracket 3, with the slot in filling section steel support 3.
More preferably, this preferred embodiment, when constructing to big cross section ingate 100, is taked top and bottom process construction from the top down, and according to hierarchy number, the shape steel bracket 3 of double-layer heavy stacked is divided into corresponding joint number.Also namely, when each construction in layer, first tunnel, then carry out successively anchor, net, spray, rope once supporting, this layer shape steel bracket component erection, sprayed mortar enclosed type steel bracket 3 surface and in its grouting behind shaft or drift lining filling.
Owing to adopting top-down layered construction method, be unsettled in shape steel bracket 3 lower end of each construction in layer, fixing in order to provide support to it, at every layering both sides side wall, horizontally disposed waist rail 7 is together set, waist rail 7 is preferably i beam, and the shape steel bracket 3 of adjacent two layers is welded in waist rail 7 upper and lower surface respectively.Waist rail 7 such as, by multiple anchoring piece, drill rod holder 8, is fixed in country rock, as Fig. 1.
In adjacent two-layer shape steel bracket 3, the lower end of the shape steel bracket 3 of last layer and the upper end of next stratotype steel bracket 3 are welded to the upper and lower surface of the waist rail 7 in the middle of the two.
In order to improve the strength and stiffness of shape steel bracket 3, weld support beam 9 between the both sides waist rail 7 of ingate 100 two ends the scope of 5.0m (be preferably in), then, to support beam 9 with above shape steel bracket 3 between be connected raker beam 10, to form overall structure.More preferably, be i iron to support beam 9, raker beam 10.
After each construction in layer completes, carry out the end, shuttering, assembling reinforcement net clearly, pouring reinforcement steel fibrous concrete arch body 6, and lay the thick foamed plastics interlayer of 20mm between spray-up 4 and steel fiber reinforced concrete arch body 6 to form compressible stratum 5 again at concrete, thus form high-strength overall secondary supporting structure.After the concrete of the steel fiber reinforced concrete arch body 6 watered reaches some strength, in cutting ingate clear space to support beam 9, raker beam 10.
So far, the composite supporting construction formed via the construction of this preferred embodiment completes substantially, and it can prevent big cross section horse-head ingate from causing wall rock destabilization and the generation of top shaft wall structure to break owing to being out of shape excessive.
To sum up, the present invention, in the work progress of colliery, takes strong supporting measure in time to the country rock after driving.And adopt construction in layer, while each layering adopts anchor, net, spray, rope once supporting, set up double-layer heavy stacked U36 shape steel bracket immediately and carry out powerful supporting, and be furnished with waist rail and to support beam, thus form space structure system, with deformation controlling for rock surrounding gateways, avoid wall rock destabilization to destroy and cause top shaft wall fracture.And when adopting commonsense method to construct, once construct from top to bottom, only have anchor, net, spray, rope once supporting, support rigidity is little, and rock deformation is large, easily causes wall rock destabilization to destroy, and just can only can build ordinary reinforced concrete arch body at driving on earth, its supporting and protection structure tension, shear behavior are poor, under uneven disturbance load action, very easily produce and break.
Visible, the anti-surrouding rock deformation ability of the present invention is strong, tension and shear behavior are greatly enhanced.For the big cross section horse-head ingate be positioned under thick surface soil, thin bedrock specific condition and supporting, the present invention effectively can prevent that surrouding rock deformation is excessive, supporting and protection structure produces unstability and topsoil section shaft lining breakage.
As known by the technical knowledge, the present invention can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Within the scope of the present invention all or be all included in the invention being equal to the change in scope of the present invention.
Claims (8)
1. a construction method for ingate composite supporting construction, comprises the following steps:
During to horse-head ingate, adopt Bolt net and jet rope once supporting, form once supporting structure;
It is characterized in that, further comprising the steps of:
At surface coverage many root type steel bracket of described once supporting structure;
Described shape steel bracket surface is filled and led up by sprayed mortar, forms the multiple spray-up of concrete;
The multiple spray-up of described concrete lays compressible material, forms compressible stratum;
Pouring reinforcement steel fibrous concrete arch body on described compressible stratum;
Described shape steel bracket is double-layer heavy stacked U36 shaped steel, and after the multiple spray-up of the described concrete of formation, also carries out grouting filling to after the wall of described shape steel bracket.
2. the construction method of ingate composite supporting construction according to claim 1, is characterized in that, described compressible stratum is the thick foamed plastics interlayer of 20mm.
3. the construction method of ingate composite supporting construction according to claim 1, is characterized in that, when horse-head ingate, take construction in layer from the top down, described shape steel bracket vertically distributes, and according to hierarchy number, described shape steel bracket is divided into corresponding joint number.
4. the construction method of ingate composite supporting construction according to claim 3, it is characterized in that, when each construction in layer, the described shape steel bracket lower end of each layering hot work in progress is provided with waist rail, to provide support to described shape steel bracket, and the lower end of described shape steel bracket of a upper layering of described waist rail and the upper end of the described shape steel bracket of next layering are connected to upper surface, the soffit of described waist rail.
5. the construction method of ingate composite supporting construction according to claim 4, is characterized in that, described waist rail is fixed in the country rock of ingate by multiple anchoring piece.
6. the construction method of ingate composite supporting construction according to claim 5, is characterized in that, further comprising the steps of:
After described waist rail is set, both sides, ingate end connect between the described waist rail of sustained height to support beam, described to support beam with above described shape steel bracket between be connected raker beam, to form space structure;
After the steel fiber reinforced concrete arch body of building reaches some strength, described to support beam and raker beam in cutting ingate clear space.
7. an ingate composite supporting construction, comprises the once supporting structure adopting Bolt net and jet rope;
It is characterized in that, also comprise:
Many root type steel bracket, is covered in the surface of described once supporting structure;
The multiple spray-up of concrete, is formed at described shape steel bracket surface, for being filled and led up on described shape steel bracket surface;
Compressible stratum, is layed on the multiple spray-up of described concrete;
Steel fiber reinforced concrete arch body, is located on described compressible stratum;
Described shape steel bracket, concrete spray coating, compressible stratum from the top down layering are arranged, and described shape steel bracket vertically distributes, and the joint number of described shape steel bracket is equal with hierarchy number; And between adjacent two-layer described shape steel bracket, be provided with the waist rail of cross direction profiles.
8. ingate composite supporting construction according to claim 7, is characterized in that, described shape steel bracket is double-layer heavy stacked U36 shaped steel, and described compressible stratum is the thick foamed plastics interlayer of 20mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310450319.XA CN103485794B (en) | 2013-09-10 | 2013-09-28 | Composite ingate supporting structure and construction method thereof |
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| CN2013104134674 | 2013-09-10 | ||
| CN201310413467 | 2013-09-10 | ||
| CN201310413467.4 | 2013-09-10 | ||
| CN201310450319.XA CN103485794B (en) | 2013-09-10 | 2013-09-28 | Composite ingate supporting structure and construction method thereof |
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| CN103485794A CN103485794A (en) | 2014-01-01 |
| CN103485794B true CN103485794B (en) | 2015-06-03 |
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| CN201320605199.1U Expired - Fee Related CN203614107U (en) | 2013-09-10 | 2013-09-28 | Composite retaining structure for horsehead |
| CN201310450319.XA Active CN103485794B (en) | 2013-09-10 | 2013-09-28 | Composite ingate supporting structure and construction method thereof |
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| CN201320605199.1U Expired - Fee Related CN203614107U (en) | 2013-09-10 | 2013-09-28 | Composite retaining structure for horsehead |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611138A (en) * | 2019-01-17 | 2019-04-12 | 平顶山平煤设计院有限公司 | A kind of distinguished and admirable partition method of mine shaft |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453914B (en) * | 2014-10-21 | 2016-08-24 | 新汶矿业集团有限责任公司 | The construction method of ingate anti-impact shock-absorbing supporting construction |
| CN104405398B (en) * | 2014-10-21 | 2016-11-30 | 新汶矿业集团有限责任公司 | Ingate anti-impact shock-absorbing supporting construction |
| CN104747191B (en) * | 2015-02-05 | 2017-10-17 | 新汶矿业集团有限责任公司 | Pit shaft and the construction method of shaft station attachment structure |
| CN208252120U (en) * | 2018-05-23 | 2018-12-18 | 淮矿西部煤矿投资管理有限公司 | A kind of shaft of vertical well and shaft station interconnecting piece |
| CN113847036A (en) * | 2021-10-25 | 2021-12-28 | 安徽理工大学 | Double-wall seat structure for deep drilling shaft after well wall bottom breaking and construction method |
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- 2013-09-28 CN CN201320605199.1U patent/CN203614107U/en not_active Expired - Fee Related
- 2013-09-28 CN CN201310450319.XA patent/CN103485794B/en active Active
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| RU2190765C2 (en) * | 2000-10-30 | 2002-10-10 | ОАО "Кузнецкий научно-исследовательский угольный институт" | Method of dismantling powered cleaning complexes |
| CN201546729U (en) * | 2009-11-13 | 2010-08-11 | 安徽理工大学 | Novel shaft lining structure at ingate position of deep coal mine well |
| CN103244162A (en) * | 2013-05-27 | 2013-08-14 | 湖南科技大学 | Compressible base plate device and anchor cable anchorage method by device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611138A (en) * | 2019-01-17 | 2019-04-12 | 平顶山平煤设计院有限公司 | A kind of distinguished and admirable partition method of mine shaft |
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| Publication number | Publication date |
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| CN203614107U (en) | 2014-05-28 |
| CN103485794A (en) | 2014-01-01 |
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