CN104061008B - Underground perfusion type flexible support and construction method thereof - Google Patents
Underground perfusion type flexible support and construction method thereof Download PDFInfo
- Publication number
- CN104061008B CN104061008B CN201410258481.6A CN201410258481A CN104061008B CN 104061008 B CN104061008 B CN 104061008B CN 201410258481 A CN201410258481 A CN 201410258481A CN 104061008 B CN104061008 B CN 104061008B
- Authority
- CN
- China
- Prior art keywords
- flexible
- interface
- flexible support
- casting
- hose
- 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.)
- Active
Links
- 230000010412 perfusion Effects 0.000 title claims abstract description 13
- 238000010276 construction Methods 0.000 title claims abstract description 7
- 239000011435 rock Substances 0.000 claims abstract description 16
- 238000005266 casting Methods 0.000 claims description 27
- 238000007569 slipcasting Methods 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000011440 grout Substances 0.000 claims description 8
- 239000004567 concrete Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 230000010410 reperfusion Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 210000002966 serum Anatomy 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000004911 serous fluid Anatomy 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
The invention relates to an underground perfusion type flexible support and a construction method thereof. The flexible support is mainly composed of a flexible hose and an interface perfusion device, wherein the flexible hose is cut into a plurality of equal-length hoses according to a design or the profile of an underground work; a certain number of small exhaust holes are formed in the middle part of each hose, or an exhaust device is connected between two flexible hose sections; after being are folded or bent, the hoses are transported to an appointed position of the underground work together with the interface perfusion device; the interface perfusion device is firstly connected with the end of the flexible hose in a sealing way, then the flexible support is fixedly arranged on a surrounding rock wall, then the interface perfusion device is connected with the end of the flexible hose in a sealing way, and grouting is performed through the perfusion holes. According to the flexible support and the construction method thereof, the flexible hose with lower linear density is adopted and is easy to bend or fold, easy to transport in an underground space, simple in installation technology and low in labor intensity.
Description
Technical field
The present invention relates to a kind of excavation support, more particularly, to a kind of underground filling type flexible support.
Background technology
The support supporting Jing for being particularly mine laneway, mine laneway secondary supporting and mountain tunnel in underground engineering is normal
Using rigid metal bracket support, including U-shaped steel bracket, flange beam stand and steel pipe concrete bracket etc., common feature is：
(1) in ground machine-shaping, point many segmental arcs are transported to underground to support, are assembled in job site, and mounting process is complicated.(2)
Support line density is big, and installation difficulty is big, generally requires and first set up scaffold and carry out mounting bracket again, and installation rate is slow, Gong Renlao
Fatigue resistance is high.(3) it is steel that support is most of, and support overall weight is big, and support is relatively costly.
The content of the invention
In order to solve defect and problem present in above-mentioned prior art, the present invention proposes a kind of flexible of underground filling type
Frame, it is different from existing rigid metal support, it is to adopt flexible hose for rack body, completed by underground machine perfusion serosity
Support is installed, the higher rigid support of grout curing rear formation intensity, supported laneway country rock.
The flexible support is mainly made up of flexible hose and interface device for casting, and in the middle part of the flexible hose one is opened up
Fixed number purpose small de-air hole is connected with exhaust apparatus between two sections of flexible hoses, the interface device for casting and flexible hose
End seals connection,
Further, the flexible support is covered by anchor pole or holdfast and special-purpose metal or tinsel fixes flexible support
On country rock wall, serosity, grout curing rear formation rigid support supporting country rock are irrigated by fill orifice.
Further, the exhaust apparatus is T-shaped structure, including two end interfaces and upper end air vent, two end interface
It is connected with one section of flexible hose end seal respectively, the upper end air vent discharges gas.
Further, the support is shaped as closing horseshoe set, and the interface device for casting is T-shaped structure, by two
End interface and upper end fill orifice are constituted, and the interface is tightly connected with flexible pipe two ends, and the fill orifice connects with the slip casting seal of tube
Connect.
Further, the support is shaped as semiclosed stalk semicircle arch trestle, and the interface device for casting includes interface
Slip casting termination and interface termination, the interface slip casting termination is T-shaped structure, is filled by upper end interface, lower end closed termination and side
Orifice is constituted, and the interface termination is made up of upper end interface and lower end closed termination, the upper end interface of the interface slip casting termination
It is tightly connected respectively at hose end with the upper end interface of the interface termination, the fill orifice is tightly connected with Grouting Pipe.
Further, it is described to be tightly connected mode for bonding connection, mechanical connection or Hybrid connections.
Further, the flexible hose has the tubing that can not artificially bend or fold by instrument, such as gold
Category silk flexible pipe, longitude and latitude webmaster or pvc pipe.
Further, the flexible hose is diameter 100mm to 500mm steel wire tubes.
Further, the reperfusion serosity is concrete slurry, organic slurry or mixed serum.
Further, the reperfusion serosity is C30 to C50 concrete.
The construction method for implementing flexible support is further comprises, including：
(1) according to design or underground engineering section by the flexible pipe that flexible hose intercepting is some equal lengths, and
Intercept and open up the small de-air hole of certain amount in the middle part of flexible pipe or exhaust apparatus is connected between two sections of flexible hoses, and process
Interface device for casting；
(2) flexible pipe is folding or bending over into rear and interface device for casting and is transported to underground engineering specified location；
(3) joint device for casting is connected with the end seals of flexible hose, is fixed by special-purpose metal set or tinsel
On anchor pole or holdfast, flexible support is reached into design shape under assisting by artificial or simple tool, Grouting Pipe is filled with joint
The fill orifice of dispensing device is tightly connected；Or first the flexible pipe is fixed on anchor pole or holdfast by metallic sheath or tinsel,
By the hose forming under being assisted by artificial or simple tool, then the end seals of joint device for casting and flexible hose are connected
Connect, Grouting Pipe is tightly connected with the fill orifice of joint device for casting；
(4) by slip casting equipment, core serosity is irrigated using pouring method, and is blocked in time, it is ensured that filling effect；
(5) repeat step (3)-(4) form the flexible support of design；
(6) core is grout curing, reaches some strength, forms rigid support, supporting country rock.
The invention has the advantages that：
1. flexible hose line density is lighter, is easily bent or folds, it is easy to transport in the underground space, reaches specific bit
Postpone and form corresponding shape under can assisting by artificial or simple tool according to design or underground engineering section.
2. the flexible support for having combined is fixed on by country rock wall using anchor pole or holdfast and tinsel or special hose set
On, design shape is reached, mounting process is simple, and labor intensity is low.
3. after core grout cures, flexible support becomes the larger rigid support of rigidity and intensity, supporting country rock.
Description of the drawings
Fig. 1 is flexible support structure figure
Fig. 2 is closing flexible carriage interface grouting device structural representation
Fig. 3 is semiclosed flexible support interface grouting device structural representation
Fig. 4 is the flexible pipe with steam vent
Fig. 5 is closing flexible rack forming and perfusion schematic diagram
Fig. 6 is semiclosed flexible support molding and two ends perfusion schematic diagram
Fig. 7 is semiclosed flexible support molding and one end perfusion schematic diagram
Fig. 8 is interface exhaust apparatus schematic diagram
Fig. 9 is that flexible pipe fixed form and two ends are fixed
Figure 10 is that flexible pipe fixed form and one end are fixed
Specific embodiment
Referring to accompanying drawing 1, the present invention proposes a kind of underground filling type flexible support, different from existing rigid metal support,
It is to adopt flexible hose 1 for rack body, support is completed by underground machine perfusion serosity and is installed, grout curing rear formation intensity
Higher rigid support, supported laneway country rock.
The flexible support is mainly made up of flexible hose 1 and interface device for casting 2, is opened up in the middle part of the flexible hose
The small de-air hole 11 of certain amount, the first interface device for casting 2 is tightly connected with the termination 12 of flexible hose 1, then by anchor
Bar or holdfast and special-purpose metal set or tinsel 4 are fixed on flexible hose 1 on country rock wall, or first pass through flexible hose 1
Anchor pole or holdfast and special-purpose metal set or tinsel 4 are fixed on country rock wall, then by the interface device for casting 2 and flexible hose
1 termination 12 is tightly connected, and carries out slip casting by fill orifice 22.
The support is shaped as closing horseshoe set, and the interface device for casting 2 is T-shaped structure, by two end interfaces 21
Constitute with upper end fill orifice 22, the interface 21 is tightly connected with the two ends of flexible pipe 1, the fill orifice 22 connects with the slip casting seal of tube
Connect.
The material of the flexible hose 1 is tinsel flexible pipe or longitude and latitude webmaster.
The slip casting is concrete slurry, organic slurry or mixed serum.
Anchor pole or holdfast are fixed on by truss or tinsel after the molding of the flexible hose 1.
The flexible hose is diameter 200mm steel wire tubes, and grouting serous fluid is C40 core concretes.
Wherein, the support shape can also be semiclosed stalk semicircle arch trestle, and the interface device for casting 2 also enters one
Step includes interface slip casting termination and interface termination 2 ', and the interface slip casting termination is T-shaped structure, by upper end interface 21, lower end seal
Closed end head 23 and side fill orifice 22 are constituted, and the interface termination 2 ' is made up of upper end interface 21 and lower end closed termination 23, institute
State two interfaces 21 to connect respectively at the end seals of flexible pipe 1, the fill orifice 22 is tightly connected with Grouting Pipe.
Wherein, the steam vent 11 that can also arrange exhaust apparatus 3 to replace flexible pipe middle part to open up, the exhaust apparatus 3 is T
Shape structure, including two end interfaces 31 and upper end air vent 32, two end interface 31 respectively with one section of flexible hose end seal
Connection, the upper end air vent 32 discharges gas.
The present embodiment further comprises the construction method for implementing flexible support：
(1) according to design or underground engineering section by the flexible pipe 1 that flexible hose intercepting is some equal lengths, and
Intercept and open up the small de-air hole 11 of certain amount in the middle part of flexible pipe or exhaust apparatus 3 is connected between two sections of flexible hoses, and
Processing interface device for casting 2；
(2) flexible pipe 1 is folding or bending over into rear and interface device for casting 2 and is transported to underground engineering specified location；
(3) first the interface device for casting 2 is tightly connected with the termination 12 of flexible hose 1, then by anchor pole or holdfast with
Special-purpose metal covers or tinsel 4 is fixed on flexible hose 1 on country rock wall, or first flexible hose 1 by anchor pole or holdfast and
Special-purpose metal covers or tinsel 4 is fixed on country rock wall, then the interface device for casting 2 is close with the termination 12 of flexible hose 1
Envelope connection, Grouting Pipe is tightly connected with the fill orifice 22 of interface device for casting；
(4) by slip casting equipment, core serosity is irrigated using pouring method, and is blocked in time, it is ensured that filling effect；
(5) repeat step (3)-(4) form the flexible support of design；
(6) core is grout curing, reaches some strength, forms rigid support, supporting country rock.
When the support is shaped as semiclosed stalk semicircle arch trestle, slip casting can adopt two ends slip casting, it would however also be possible to employ
One end slip casting.
Wherein the number of injected hole is 3.
Referring to accompanying drawing 9-10, tinsel 4 can be fixed flexible pipe 1 after the tensioning of two anchor poles, it is also possible to by around
Cross same anchor pole and fix flexible pipe 1.
The above, only the preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto, ability
Field technique personnel are it should be understood that without departing from the principle of the invention and spirit that its scope is limited by claim and its equivalent
In the case of, these embodiments can be modified and perfect, these are changed and improve also should be in protection scope of the present invention
It is interior.
Claims (9)
1. a kind of underground filling type flexible support, it is characterised in that the flexible support is mainly irrigated by flexible hose and interface
Device is constituted, and the steam vent of certain amount is opened up in the middle part of the flexible hose or aerofluxuss is connected between two sections of flexible hoses
Device, the interface device for casting is connected with the end seals of flexible hose；The mode being tightly connected be bonding connection or
It is mechanically connected；
The exhaust apparatus is T-shaped structure, including two end connectors and upper end air vent, two end connector respectively with one section of flexibility
Hose end is tightly connected, and the upper end air vent discharges gas.
2. flexible support according to claim 1, it is characterised in that by anchor pole or holdfast and special-purpose metal set or metal
Silk is fixed on flexible support on country rock wall, and by interface device for casting serosity is irrigated, grout curing rear flexible support into
For rigid support, supporting country rock.
3. flexible support according to claim 1, it is characterised in that the support is shaped as closing horseshoe set, institute
It is T-shaped structure to state interface device for casting, is made up of two end interfaces and upper end fill orifice, and the interface is sealed with flexible pipe two ends
Connection, the fill orifice is tightly connected with Grouting Pipe, forms closing flexible support.
4. flexible support according to claim 1, it is characterised in that the support is shaped as semiclosed stalk semicircular arch
Frame, the interface device for casting includes interface slip casting termination and interface termination, and the interface slip casting termination is T-shaped structure, by upper
End interface, lower end closed termination and side fill orifice composition, the interface termination is made up of upper end interface and lower end closed termination,
The upper end interface of the upper end interface of the interface slip casting termination and the interface termination is tightly connected respectively with hose end, described
Fill orifice is tightly connected with Grouting Pipe, forms closing flexible support.
5. the flexible support according to claim 3 or 4, it is characterised in that the flexible hose has can not by instrument
With artificial bending or the tubing for folding, the tubing is tinsel flexible pipe, longitude and latitude webmaster or pvc pipe.
6. flexible support according to claim 2, it is characterised in that the reperfusion serosity is concrete slurry, organic slurry
Liquid or mixed serum.
7. flexible support according to claim 1, it is characterised in that the flexible hose is diameter 100mm to 500mm steel
Fiber tube.
8. flexible support according to claim 2, it is characterised in that the reperfusion serosity is C30 to C50 concrete.
9. a kind of construction method of the flexible support as described in any one of claim 1-8, it is characterised in that：Comprise the steps,
(1) flexible hose is intercepted according to design or underground engineering section for the flexible pipe for some equal lengths, and is being intercepted
The steam vent of certain amount is opened up in the middle part of flexible pipe or exhaust apparatus is connected between two sections of flexible hoses, and processing interface is filled
Dispensing device；
(2) after the flexible pipe is folding or bending over, and interface device for casting is transported to underground engineering specified location；
(3) interface device for casting is connected with the end seals of flexible hose, anchor is fixed on by special-purpose metal set or tinsel
On bar or holdfast, flexible support is reached into design shape, Grouting Pipe and interface perfusion dress under assisting by artificial or simple tool
The fill orifice put is tightly connected；Or first the flexible pipe is fixed on anchor pole or holdfast by metallic sheath or tinsel, pass through
By the hose forming under the assistance of artificial or simple tool, then interface device for casting is connected with the end seals of flexible hose,
Grouting Pipe is tightly connected with the fill orifice of interface device for casting；
(4) by slip casting equipment, core serosity is irrigated using pouring method, and is blocked in time, it is ensured that filling effect；
(5) repeat step (3)-(4) form the flexible support group of design；
(6) core is grout curing, reaches some strength, forms rigid support, supporting country rock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258481.6A CN104061008B (en) | 2014-06-11 | 2014-06-11 | Underground perfusion type flexible support and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258481.6A CN104061008B (en) | 2014-06-11 | 2014-06-11 | Underground perfusion type flexible support and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104061008A CN104061008A (en) | 2014-09-24 |
| CN104061008B true CN104061008B (en) | 2017-05-17 |
Family
ID=51548916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410258481.6A Active CN104061008B (en) | 2014-06-11 | 2014-06-11 | Underground perfusion type flexible support and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104061008B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500109A (en) * | 2014-12-19 | 2015-04-08 | 北京瑞诺安科新能源技术有限公司 | Underground support pillar and construction method thereof |
| CN106801611B (en) * | 2015-11-26 | 2019-03-22 | 山东科技大学 | A kind of deep tunnel supporting new concrete bracket |
| CN105781596B (en) * | 2016-03-04 | 2019-03-29 | 李学彬 | A kind of flexible support and method for protecting support |
| CN105697032B (en) * | 2016-03-04 | 2019-01-01 | 华北科技学院 | A kind of method for protecting support |
| CN105604579B (en) * | 2016-03-04 | 2019-02-22 | 张超 | Bridge tunnel strenthening member blade inserting provisions for grouting and grouting method |
| CN109489922B (en) * | 2018-11-15 | 2021-01-01 | 华北科技学院 | Test device for testing mechanical property of flexible support |
| CN110424990B (en) * | 2019-07-11 | 2021-03-23 | 华北科技学院 | Tunneling, pouring and supporting construction equipment and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885397A (en) * | 1973-11-23 | 1975-05-27 | Taiheiyo Coal Mining Co Ltd | Mining shield-supporter |
| US4263005A (en) * | 1977-10-13 | 1981-04-21 | Vereinigte Osterreichische Eisen-Und Stahlwerke - Alphine Montan Aktiengesellschaft | Device for provisionally consolidating a gallery and suitable consolidating frame |
| CN101144386A (en) * | 2007-11-01 | 2008-03-19 | 王晓利 | Disposable flexible template device and construction method thereof |
| CN103244142A (en) * | 2013-05-23 | 2013-08-14 | 中煤科工集团武汉设计研究院 | Device and method for supporting concrete strip of flexible formwork for tunnel laid coal conveying pipeline |
| CN103470276A (en) * | 2013-09-06 | 2013-12-25 | 张爽 | Hollow-pipe concrete support |
| CN103485805A (en) * | 2013-09-06 | 2014-01-01 | 中国矿业大学(北京) | Structure of steel-bar concrete rack section, grouting port and air exhausting hole |
| CN204253069U (en) * | 2014-06-11 | 2015-04-08 | 李学彬 | A kind of underground filling type flexible support |
-
2014
- 2014-06-11 CN CN201410258481.6A patent/CN104061008B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3885397A (en) * | 1973-11-23 | 1975-05-27 | Taiheiyo Coal Mining Co Ltd | Mining shield-supporter |
| US4263005A (en) * | 1977-10-13 | 1981-04-21 | Vereinigte Osterreichische Eisen-Und Stahlwerke - Alphine Montan Aktiengesellschaft | Device for provisionally consolidating a gallery and suitable consolidating frame |
| CN101144386A (en) * | 2007-11-01 | 2008-03-19 | 王晓利 | Disposable flexible template device and construction method thereof |
| CN103244142A (en) * | 2013-05-23 | 2013-08-14 | 中煤科工集团武汉设计研究院 | Device and method for supporting concrete strip of flexible formwork for tunnel laid coal conveying pipeline |
| CN103470276A (en) * | 2013-09-06 | 2013-12-25 | 张爽 | Hollow-pipe concrete support |
| CN103485805A (en) * | 2013-09-06 | 2014-01-01 | 中国矿业大学(北京) | Structure of steel-bar concrete rack section, grouting port and air exhausting hole |
| CN204253069U (en) * | 2014-06-11 | 2015-04-08 | 李学彬 | A kind of underground filling type flexible support |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104061008A (en) | 2014-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104061008B (en) | Underground perfusion type flexible support and construction method thereof | |
| CN205422813U (en) | Detachable filling and retaining wall | |
| CN109208637A (en) | Increase the construction method of open-cut station newly on the basis of existing tunnel | |
| CN109184700B (en) | Construction method for clamping rock in soft surrounding rock small-clear-distance tunnel stability | |
| CN105673046B (en) | Double-arched tunnel middle drift vault backfills construction method | |
| CN103940968B (en) | Test bed device for tunnel excavating and grouting model and application method of device | |
| CN104790419B (en) | A kind of dewatering construction method suitable for rich water mobile sand layer tunnel | |
| CN109707415A (en) | A kind of joint construction method and its joint structure of Shield-bored tunnels and station | |
| CN103321255A (en) | Underground concrete structural engineering joint waterproof construction method | |
| CN103437789B (en) | Build waterproof structure, adopt the method for water proof mode constructing underground building | |
| CN205840894U (en) | A kind of tunnel confined concrete bow member mechanized construction quickly positions one-above-the-other layout | |
| CN106121234A (en) | The mounting tool of a kind of roof large span large-diameter pipeline and installation method | |
| CN205479715U (en) | Pipeline supports protection architecture | |
| CN109487813A (en) | A kind of integrated prefabricated tube coupling and its construction method of pipe gallery street crossing push pipe | |
| CN108547640A (en) | Tunnel Second Lining arch gap grouting device | |
| CN204253069U (en) | A kind of underground filling type flexible support | |
| CN102094430B (en) | Pilot pipe device in long-distance jacking construction of large-diameter steel pipe and construction method thereof | |
| CN112727501B (en) | Temporary supporting structure of transverse passage and construction method of transverse passage | |
| CN110130904B (en) | A simulation push pipe section for push pipe tunnelling construction analogue test | |
| CN209324372U (en) | One kind being based on two-layer pipe underground filling type flexible support | |
| CN105697932B (en) | The feed pipe constructing structure and its construction technology of flexible water leakage of cast iron pipe can be prevented | |
| CN117365501A (en) | Reinforcing construction method for large-diameter shield tunnel by enlarging and excavating large-size vehicle transverse passage | |
| CN203584437U (en) | First lining structure used for constructing underground engineering and having water-resisting function | |
| CN107525594A (en) | A kind of new embedded concrete temperature tube and installation method | |
| CN208073517U (en) | A kind of twisted steel positioning reinforcing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231226 Address after: 710086 No. 1, Fengquan Road, Fengdong new town, Xixian New District, Xi'an City, Shaanxi Province Patentee after: Shaanxi Tongren applied material Co.,Ltd. Address before: 100083 Beijing City, Haidian District Institute of Rutosids No. 11 Patentee before: Li Xuebin |