CN103244142A - Device and method for supporting concrete strip of flexible formwork for tunnel laid coal conveying pipeline - Google Patents
Device and method for supporting concrete strip of flexible formwork for tunnel laid coal conveying pipeline Download PDFInfo
- Publication number
- CN103244142A CN103244142A CN2013101936813A CN201310193681A CN103244142A CN 103244142 A CN103244142 A CN 103244142A CN 2013101936813 A CN2013101936813 A CN 2013101936813A CN 201310193681 A CN201310193681 A CN 201310193681A CN 103244142 A CN103244142 A CN 103244142A
- Authority
- CN
- China
- Prior art keywords
- arch
- tunnel
- anchor
- anchor pole
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a device and a method for supporting a concrete strip of a flexible formwork for a tunnel laid coal conveying pipeline. The device comprises the coal conveying pipeline, the flexible formwork, a concrete arch, fine earth, broken stones, anchor rods and sprayed concrete. A strip arch support comprises an anchor arch support and a bolting-wire mesh-shotcreting support, the anchor arch support structurally comprises the anchor rod, a compound arch and a flexible formwork arch, the compound arch and the flexible formwork arch are connected through the anchor rod to form a compound beam structure, bending resistance and stability of the flexible formwork arch are enhanced, the bearing capacity of the compound arch serves as an emergency capacity in design, and the bolting-wire mesh-shotcreting support structurally comprises an anchor rod, a reinforcing mesh and the sprayed concrete. Structural stability of the anchor arch support is better than that of an anchor bolt-spray support and a lining support, the support structure is high in construction speed, stable, high in strength and convenient to operate and is widely used for underground tunnel engineering, construction period is shortened, the formwork does not need to be removed, and cost is saved.
Description
Technical field
The present invention relates to the tunnel support device, be specifically related to tunnel type and lay convey coal pipe Flexible formwork assembly concrete band suspension device and method.
Background technology
At present, the narrow-bore tunnel construction Difficulties is that excavated section is little, and working space is limited, joins the type difficulty at machinery aspect dress slag and the transportation, and each operation construction phase mutual interference is as excavation supporting and two lining constructions etc.Therefore require the machinery of tunneling construction and supporting construction to want miniaturization, construction is rapid, as far as possible the reduction of erection time, reduces the interference of each inter process.
Summary of the invention
The objective of the invention is for the narrow-bore tunnel provides a kind of speed of application fast, supporting and protection structure is stable, and supporting intensity height, operating procedure tunnel type easily lay convey coal pipe Flexible formwork assembly concrete band suspension device.
Another purpose of the present invention is the sprayed mortar band suspension device that provides tunnel type to lay convey coal pipe for the narrow-bore tunnel.
Still a further object of the present invention is to provide a kind of Flexible formwork assembly concrete band supporting method for the narrow-bore tunnel.
In order to overcome the deficiencies in the prior art, the technical program is to solve like this: tunnel type lays convey coal pipe Flexible formwork assembly concrete band suspension device, this system and device is by convey coal pipe, Flexible formwork assembly, the concrete arch, fine earth, rubble, anchor pole, pallet is formed, and special character of the present invention is that the tunnel is stalk semicircle crowned section, passes through an anchor pole and another anchor pole at stalk semicircle crowned section, pallet is connected with double-deck Flexible formwork assembly, double-deck Flexible formwork assembly inner chamber filling concrete, the be laid in lower right side in tunnel of described convey coal pipe, and bury the lower-left side gravel backfill landfill in tunnel underground with the fine earth backfill.
Tunnel type lays the sprayed mortar band suspension device of convey coal pipe, this system and device is by convey coal pipe, steel mesh reinforcement, sprayed mortar, fine earth, rubble, anchor pole, pallet are formed, special character of the present invention is that described tunnel is stalk semicircle crowned section, be connected the be laid in lower right side in tunnel of sprayed mortar on the steel mesh reinforcement, described convey coal pipe by the 3rd anchor pole with steel mesh reinforcement with the 4th anchor pole, pallet at stalk semicircle crowned section, and bury the lower-left side gravel backfill landfill in tunnel underground with the fine earth backfill.
Tunnel type lays the method for the Flexible formwork assembly concrete band suspension device of convey coal pipe, is undertaken by following step:
1), the hole adopts the mode of open channel excavation to construct, supporting is carried out on tunneling limit, limit, adopts the supporting of Flexible formwork assembly concrete band arch, anchor arch section and anchor net spray spacer segment layout, the segment length is 1600mm;
2), anchor arch section adopts anchor pole, steel mesh reinforcement, Flexible formwork assembly concrete arch combined supporting, at first squeeze into anchor pole and protruded length 400mm in arch, tunnel and stalk place in the anchor arch section, earlier respectively put on each anchor pole a pallet and on jack panel, then each anchor pole is passed the Flexible formwork assembly preformed hole, spread steel mesh reinforcement at last in the Flexible formwork assembly outside and respectively put into a pallet again in each anchor pole outside Flexible formwork assembly and steel mesh reinforcement is fixed, after having hung Flexible formwork assembly like this, just can concrete be pumped in the Flexible formwork assembly by the perfusing hole on the Flexible formwork assembly by the Flexible formwork assembly concrete pumping system, treat concrete setting after the Flexible formwork assembly concrete can form;
3), anchor net spray section adopts anchor pole, steel mesh reinforcement, sprayed mortar combined supporting, at first squeeze into anchor pole in arch, tunnel and stalk place in the anchor net spray section, spread steel mesh reinforcement (10) along tunnel cross-section then, first-class pallet (8) is fixed with anchor pole and steel mesh reinforcement again, adopt the concrete injection apparatus that concrete (9) is injected in tunnel surface at last, jet thickness is 50mm;
4), in anchor arch section, φ 6.5mm round steel steel mesh reinforcement, mesh specification 150 * 150mm hang in arch, tunnel and portion of group; Anchor pole is selected the strong anchor pole of φ 18mm for use, rectangular arrangement, array pitch 800 * 800mm, the five rock-bolt length 2000mm in arch, another rock-bolt length 1600mm of portion of group; Anchor pole band double bracket dish pastes tunnel scar and concrete surface tray, specification 120 * 120 * 10mm; Respectively one of Z2335 and Z2370 resin anchoring agent is adopted in the anchoring agent, and anchored force is not less than 50KN; Adopt concrete grade C30, the dark 200mm of concrete foundation;
5), in anchor net spray section, the arch, tunnel hangs φ 6.5mm round steel steel mesh reinforcement, mesh specification 150 * 150mm, anchor pole selects for use the left-handed nothing of φ 20mm to indulge rib twisted steel anchor rod, rectangular arrangement, array pitch 800 * 800mm, arch the 3rd rock-bolt length 2000mm, the 4th rock-bolt length 1600mm of portion of group pastes the tunnel scar iron pallet, specification 120 * 120 * 10mm is installed.Sprayed mortar thickness 50mm, label C20;
6), tunnel band arch supporting stable after, one side is buried convey coal pipe underground and is carried out backfill with fine earth in the tunnel, and carries out backfill at the tunnel opposite side with rubble.
The invention has the beneficial effects as follows: construction area of Flexible formwork assembly concrete support technology is big, the concrete globality that forms and good stability, intensity height, and mechanization degree height, speed of application is fast, and this technology all has outstanding superiority on economy, ecological environment and humanistic community benefit can improve tunnel support speed to a certain extent, strengthens the stability of tunnel support, reduction of erection time, without stripping, save cost, be widely used in the subterranean tunnel engineering.
Description of drawings
Fig. 1 is suspension device structural representation of the present invention;
Fig. 2 is another suspension device structural representation of the present invention;
Among the figure: 1-convey coal pipe, 2-Flexible formwork assembly, 3-concrete, 4-fine earth, the 5-rubble, 6-anchor arch section semicircular arch anchor pole, 7-anchor arch section stalk anchor pole, 8-pallet, the 9-sprayed mortar, 10-steel mesh reinforcement, 11-anchor net spray section semicircular arch anchor pole, 12-anchor net spray section stalk anchor pole.
Specific embodiment
Accompanying drawing is embodiments of the invention.
Below in conjunction with accompanying drawing content of the present invention is further described:
With reference to Fig. 1 and Fig. 2, tunnel type lays convey coal pipe Flexible formwork assembly concrete band suspension device, this device is by convey coal pipe, Flexible formwork assembly, the concrete arch, fine earth, rubble, anchor pole, pallet are formed, and described tunnel is stalk semicircle crowned section, are connected with double-deck Flexible formwork assembly 2 with another anchor pole 7, pallet 8 by an anchor pole 6 at stalk semicircle crowned section, double-deck Flexible formwork assembly 2 inner chamber filling concrete 3, the be laid in lower right side in tunnel of described convey coal pipe 1, and bury underground with fine earth 4 backfills, the lower-left side in tunnel is with rubble 5 backfill landfills.
Tunnel type lays the sprayed mortar band suspension device of convey coal pipe, this system and device is by convey coal pipe, steel mesh reinforcement, sprayed mortar, fine earth, rubble, anchor pole, pallet are formed, described tunnel is stalk semicircle crowned section, be connected with steel mesh reinforcement 10 with the 4th anchor pole 12, pallet 8 by the 3rd anchor pole 11 at stalk semicircle crowned section, sprayed mortar 9 on the steel mesh reinforcement 10, the be laid in lower right side in tunnel of described convey coal pipe 1, and bury underground with fine earth 4 backfills, the lower-left side in tunnel is with rubble 5 backfill landfills.
Tunnel type lays the method for the Flexible formwork assembly concrete band suspension device of convey coal pipe, is undertaken by following step:
1), the hole adopts the mode of open channel excavation to construct, supporting is carried out on tunneling limit, limit, adopts the supporting of Flexible formwork assembly concrete band arch, anchor arch section and anchor net spray spacer segment layout, the segment length is 1600mm;
2), anchor arch section adopts anchor pole, steel mesh reinforcement, Flexible formwork assembly concrete arch combined supporting, at first squeeze into anchor pole and protruded length 400mm in arch, tunnel and stalk place in the anchor arch section, earlier respectively put on each anchor pole a pallet and on jack panel, then each anchor pole is passed the Flexible formwork assembly preformed hole, spread steel mesh reinforcement 10 at last in Flexible formwork assembly 2 outsides and respectively put into a pallet 8 again in each anchor pole outside Flexible formwork assembly 2 and steel mesh reinforcement 10 is fixed, after having hung Flexible formwork assembly 2 like this, just can concrete be pumped in the Flexible formwork assembly by the perfusing hole on the Flexible formwork assembly by the Flexible formwork assembly concrete pumping system, treat concrete setting after Flexible formwork assembly concrete 3 can form;
3), anchor net spray section adopts anchor pole, steel mesh reinforcement, sprayed mortar combined supporting, at first squeeze into anchor pole in arch, tunnel and stalk place in the anchor net spray section, spread steel mesh reinforcement 10 along tunnel cross-section then, first-class pallet 8 is fixed with anchor pole and steel mesh reinforcement again, adopt the concrete injection apparatus that concrete 9 is injected in tunnel surface at last, jet thickness is 50mm;
4), in anchor arch section, φ 6.5mm round steel steel mesh reinforcement 10, mesh specification 150 * 150mm hang in arch, tunnel and portion of group; Anchor pole is selected the strong anchor pole of φ 18mm for use, rectangular arrangement, array pitch 800 * 800mm, arch five anchor poles, 6 length 2000mm, another anchor pole 7 length 1600mm of portion of group; Anchor pole band double bracket dish 8 pastes tunnel scar and concrete surface tray, specification 120 * 120 * 10mm; Respectively one of Z2335 and Z2370 resin anchoring agent is adopted in the anchoring agent, and anchored force is not less than 50KN; Adopt concrete grade C30, the dark 200mm of concrete foundation;
5), in anchor net spray section, the arch, tunnel hangs φ 6.5mm round steel steel mesh reinforcement 10, mesh specification 150 * 150mm, anchor pole selects for use the left-handed nothing of φ 20mm to indulge rib twisted steel anchor rod, rectangular arrangement, array pitch 800 * 800mm, arch the 3rd anchor pole 11 length 2000mm, the 4th anchor pole 12 length 1600mm of portion of group paste the tunnel scar iron pallet 8, specification 120 * 120 * 10mm are installed.Sprayed mortar 9 thickness 50mm, label C20;
6), tunnel band arch supporting stable after, one side is buried convey coal pipe 1 underground and is carried out backfill with fine earth 4 in the tunnel, and carries out backfill at the tunnel opposite side with rubble 5.
In sum, coal chute tunnel Flexible formwork assembly concrete band arch suspension device and supporting method involved in the present invention, Flexible formwork assembly pumping liquid concrete supporting and protection structure had both been inherited the rigidity of the whole supporting of concrete continuous, having the flexibility of bolt support and the advantage of active support again concurrently, is to couple hardness with softness.This structure has increased anchor pole to the effect that is connected between country rock and the arch body, makes country rock, anchor pole and the arch body be out of shape carrying jointly, and supporting capacity is higher.Construction area of this supporting method is big, the concrete good integrity of formation, intensity height, and mechanization degree height, and speed of application is fast, and this technology all has outstanding superiority on economy, ecological environment and humanistic community benefit.
By reference to the accompanying drawings the present invention has been carried out exemplary description above; obvious realization of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted device design of the present invention and technical scheme to carry out; or without improving design of the present invention and technical scheme are directly applied to other occasion, all in protection scope of the present invention.
Claims (3)
1. tunnel type lays the Flexible formwork assembly concrete band support system device of convey coal pipe, this system and device is by convey coal pipe, Flexible formwork assembly, the concrete arch, fine earth, rubble, anchor pole, pallet is formed, it is characterized in that the tunnel is stalk semicircle crowned section, pass through an anchor pole (6) and another anchor pole (7) at stalk semicircle crowned section, pallet (8) is connected with double-deck Flexible formwork assembly (2), the be laid in lower right side in tunnel of double-deck Flexible formwork assembly (2) inner chamber filling concrete (3), described convey coal pipe (1), and bury underground with fine earth (4) backfill, the lower-left side in tunnel is with rubble (5) backfill landfill.
2. tunnel type lays the sprayed mortar band suspension device of convey coal pipe, this system and device is by convey coal pipe, steel mesh reinforcement, sprayed mortar, fine earth, rubble, anchor pole, pallet is formed, it is characterized in that described tunnel is stalk semicircle crowned section, pass through the 3rd anchor pole (11) and the 4th anchor pole (12) at stalk semicircle crowned section, pallet (8) is connected with steel mesh reinforcement (10), and steel mesh reinforcement (10) is gone up sprayed mortar (9), the be laid in lower right side in tunnel of described convey coal pipe (1), and bury underground with fine earth (4) backfill, the lower-left side in tunnel is with rubble (5) backfill landfill.
3. tunnel type method of laying the Flexible formwork assembly concrete band suspension device of convey coal pipe as claimed in claim 1 or 2, undertaken by following step:
1), the hole adopts the mode of open channel excavation to construct, supporting is carried out on tunneling limit, limit, adopts the supporting of Flexible formwork assembly concrete band arch, anchor arch section and anchor net spray spacer segment layout, the segment length is 1600mm;
2), anchor arch section adopts anchor pole, steel mesh reinforcement, Flexible formwork assembly concrete arch combined supporting, at first squeeze into anchor pole and protruded length 400mm in arch, tunnel and stalk place in the anchor arch section, earlier respectively put on each anchor pole a pallet and on jack panel, then each anchor pole is passed the Flexible formwork assembly preformed hole, spread steel mesh reinforcement (10) at last in Flexible formwork assembly (2) outside and respectively put into a pallet (8) again in each anchor pole outside Flexible formwork assembly (2) and steel mesh reinforcement (10) is fixed, after having hung Flexible formwork assembly (2) like this, just can concrete be pumped in the Flexible formwork assembly by the perfusing hole on the Flexible formwork assembly by the Flexible formwork assembly concrete pumping system, treat concrete setting after Flexible formwork assembly concrete (3) can form;
3), anchor net spray section adopts anchor pole, steel mesh reinforcement, sprayed mortar combined supporting, at first squeeze into anchor pole in arch, tunnel and stalk place in the anchor net spray section, spread steel mesh reinforcement (10) along tunnel cross-section then, first-class pallet (8) is fixed with anchor pole and steel mesh reinforcement again, adopt the concrete injection apparatus that concrete (9) is injected in tunnel surface at last, jet thickness is 50mm;
4), in anchor arch section, φ 6.5mm round steel steel mesh reinforcement (10), mesh specification 150 * 150mm hang in arch, tunnel and portion of group; Anchor pole is selected the strong anchor pole of φ 18mm for use, rectangular arrangement, array pitch 800 * 800mm, five anchor poles in arch (6) length 2000mm, another anchor pole of portion of group (7) length 1600mm; Anchor pole band double bracket dish (8) pastes tunnel scar and concrete surface tray, specification 120 * 120 * 10mm; Respectively one of Z2335 and Z2370 resin anchoring agent is adopted in the anchoring agent, and anchored force is not less than 50KN; Adopt concrete grade C30, the dark 200mm of concrete foundation;
5), in anchor net spray section, the arch, tunnel hangs φ 6.5mm round steel steel mesh reinforcement (10), mesh specification 150 * 150mm, anchor pole selects for use the left-handed nothing of φ 20mm to indulge rib twisted steel anchor rod, rectangular arrangement, array pitch 800 * 800mm, arch the 3rd anchor pole (11) length 2000mm, portion of group the 4th anchor pole (12) length 1600mm pastes the tunnel scar iron pallet (8), specification 120 * 120 * 10mm is installed.Sprayed mortar (9) thickness 50mm, label C20;
6), tunnel band arch supporting stable after, one side is buried coal chute (1) underground and is carried out backfill with fine earth (4) in the tunnel, and carries out backfill at the tunnel opposite side with rubble (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101936813A CN103244142A (en) | 2013-05-23 | 2013-05-23 | Device and method for supporting concrete strip of flexible formwork for tunnel laid coal conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101936813A CN103244142A (en) | 2013-05-23 | 2013-05-23 | Device and method for supporting concrete strip of flexible formwork for tunnel laid coal conveying pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103244142A true CN103244142A (en) | 2013-08-14 |
Family
ID=48923983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101936813A Pending CN103244142A (en) | 2013-05-23 | 2013-05-23 | Device and method for supporting concrete strip of flexible formwork for tunnel laid coal conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103244142A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061008A (en) * | 2014-06-11 | 2014-09-24 | 李学彬 | Underground perfusion type flexible support and construction method thereof |
| CN106014453A (en) * | 2016-07-08 | 2016-10-12 | 山东大学 | Method for automatically constructing support of confined concrete arch center for underground tunnel |
| CN108643938A (en) * | 2018-05-23 | 2018-10-12 | 淮矿西部煤矿投资管理有限公司 | Coal mine deep well tunnel smooth surface concrete spraying support structure and its construction method |
| CN116201574A (en) * | 2023-05-06 | 2023-06-02 | 中国矿业大学(北京) | Rock burst active prevention and control system |
| US12037904B1 (en) | 2023-05-06 | 2024-07-16 | China University Of Mining And Technology—Beijing | Rock burst active prevention and control mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144386A (en) * | 2007-11-01 | 2008-03-19 | 王晓利 | Disposable flexible template device and construction method thereof |
| CN101493012A (en) * | 2009-02-12 | 2009-07-29 | 王晓利 | Combined support system of flexible film barrel, rigid support and concrete and construction method |
| CN101975073A (en) * | 2009-09-30 | 2011-02-16 | 王晓利 | Retractable concrete arch and anchor rod combined support system and construction method |
| CN203271762U (en) * | 2013-05-23 | 2013-11-06 | 中煤科工集团武汉设计研究院 | Concrete band support system device of tunnel type paved coal conveying pipeline |
-
2013
- 2013-05-23 CN CN2013101936813A patent/CN103244142A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144386A (en) * | 2007-11-01 | 2008-03-19 | 王晓利 | Disposable flexible template device and construction method thereof |
| CN101493012A (en) * | 2009-02-12 | 2009-07-29 | 王晓利 | Combined support system of flexible film barrel, rigid support and concrete and construction method |
| CN101975073A (en) * | 2009-09-30 | 2011-02-16 | 王晓利 | Retractable concrete arch and anchor rod combined support system and construction method |
| CN203271762U (en) * | 2013-05-23 | 2013-11-06 | 中煤科工集团武汉设计研究院 | Concrete band support system device of tunnel type paved coal conveying pipeline |
Non-Patent Citations (2)
| Title |
|---|
| 吴海峰: "锚碹支护技术在薄顶板巷道支护中应用研究", 《中国优秀硕士学位论文全文数据库》, 30 June 2012 (2012-06-30) * |
| 陈旭: "柔模泵注混凝土支护技术在松软地层斜井施工中的应用", 《建井技术》, vol. 33, no. 5, 25 October 2012 (2012-10-25), pages 24 - 27 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061008A (en) * | 2014-06-11 | 2014-09-24 | 李学彬 | Underground perfusion type flexible support and construction method thereof |
| CN104061008B (en) * | 2014-06-11 | 2017-05-17 | 李学彬 | Underground perfusion type flexible support and construction method thereof |
| CN106014453A (en) * | 2016-07-08 | 2016-10-12 | 山东大学 | Method for automatically constructing support of confined concrete arch center for underground tunnel |
| CN106014453B (en) * | 2016-07-08 | 2018-06-22 | 山东大学 | A kind of confined concrete arch supporting automated construction method suitable for subterranean tunnel |
| CN108643938A (en) * | 2018-05-23 | 2018-10-12 | 淮矿西部煤矿投资管理有限公司 | Coal mine deep well tunnel smooth surface concrete spraying support structure and its construction method |
| CN108643938B (en) * | 2018-05-23 | 2024-04-05 | 淮矿西部煤矿投资管理有限公司 | Smooth surface shotcrete supporting structure of deep coal mine tunnel and construction method thereof |
| CN116201574A (en) * | 2023-05-06 | 2023-06-02 | 中国矿业大学(北京) | Rock burst active prevention and control system |
| US12037904B1 (en) | 2023-05-06 | 2024-07-16 | China University Of Mining And Technology—Beijing | Rock burst active prevention and control mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109458196B (en) | Environment-friendly durable single-layer lining structure suitable for weak surrounding rock tunnel | |
| CN103993611B (en) | A kind of deep layer rotating spraying cement-soil plate and anchor pole combine the construction method of anti-floating pile raft structure | |
| CN101985882B (en) | Construction method of rigid primary support of mould-building concrete of plateau permafrost tunnel | |
| CN108119149A (en) | The tunnel support structure and construction method of existing building are worn under a kind of | |
| CN104533446A (en) | Construction method and structure of two-layer preliminary support for preventing geological disaster of large-section weak surrounding rock tunnel | |
| CN104533453A (en) | Substep dynamic coupling support method for roadway fault fracture zone | |
| CN208702421U (en) | The tunnel support structure of existing pile foundation building is worn under a kind of | |
| CN105443143B (en) | A kind of coal mine gob roadway support device and its construction method | |
| CN102226407A (en) | Four-line large-span tunnel cable-arch combined primary support structure | |
| CN209924998U (en) | Shallow earthing shield tunnel is worn road reinforcement protection architecture down | |
| CN103032080A (en) | Support method of weak and broken surrounding rock tunnel | |
| CN103244142A (en) | Device and method for supporting concrete strip of flexible formwork for tunnel laid coal conveying pipeline | |
| CN109184747A (en) | A kind of method for protecting support of Deep Soft Rock Tunnel | |
| CN102797486A (en) | Fabricated grilling anti-invert method for treating pucking | |
| CN104612696A (en) | Construction method for large-section underground excavation subway station to pass through viaduct in fine sand layer by using column hole method | |
| CN203939509U (en) | The waterproof construction of bolt-spary supports traffic tunnel | |
| CN102330436A (en) | Composite retaining structure and composite retaining method for half geotechnical layer ultradeep round spiral flow tank | |
| CN103161474B (en) | Construction method of down hole interchange roadway | |
| CN102277875A (en) | Composite supporting structure between piles | |
| CN105625302A (en) | Variable-cross-section stiffening core reinforcing active material composite pile structure and construction method | |
| CN202181908U (en) | Expanding soft rock roadway waterproof supporting combined structure | |
| CN103046765B (en) | Construction process for continued application of air-raid shelter | |
| CN114991810B (en) | Composite supporting structure and construction method of wall rear mould bag grouting and high-strength support | |
| CN209838435U (en) | Unloading arch backfill structure for penetrating through large-sized non-filling karst cave tunnel | |
| CN106640117A (en) | Underground cavern top arc structure, underground cavern and construction method of underground cavern |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 430064 Hubei Province, Wuhan city Wuchang District Wuluo Road No. 442 Applicant after: Wuhan Design and Research Institute Co., Ltd. pf China Coal Technology & Engineering Group Address before: 430064 Hubei Province, Wuhan city Wuchang District Wuluo Road No. 442 Applicant before: Wuhan Design and Research Institute of China Coal Technology & Engineering Group |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: WUHAN DESIGN AND RESEARCH INSTITUTE OF CHINA COAL TECHNOLOGY + ENGINEERING GROUP TO: WUHAN DESIGN AND RESEARCH INSTITUTE CO., LTD. PF CHINA COAL TECHNOLOGY + ENGINEERING GROUP |
|
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130814 |