CN109779668B - Tunnel jet fan embedded steel plate reinforcing method - Google Patents
Tunnel jet fan embedded steel plate reinforcing method Download PDFInfo
- Publication number
- CN109779668B CN109779668B CN201910041731.3A CN201910041731A CN109779668B CN 109779668 B CN109779668 B CN 109779668B CN 201910041731 A CN201910041731 A CN 201910041731A CN 109779668 B CN109779668 B CN 109779668B
- Authority
- CN
- China
- Prior art keywords
- hole
- steel plate
- drill
- embedded steel
- anchoring adhesive
- 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
Images
Landscapes
- Working Measures On Existing Buildindgs (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a method for reinforcing a pre-buried steel plate of a tunnel jet fan, belongs to the technical field of tunnel construction, and has the advantage of reinforcing the pre-buried steel plate which does not meet the requirement of drawing force strength. The method comprises the following steps: s1: cleaning the surface of the embedded steel plate; s2: determining the position of a drill hole on the embedded steel plate; s3: drilling a hole in the embedded steel plate to the inside of the concrete wall by using an electric drill, wherein the drilled hole is vertical to the embedded steel plate; s4: polishing the bottom of the drilled hole into a circular arc shape; s5: cleaning dust in the drill hole; s6: heating the drill hole, the anchoring adhesive and the medicament tube; s7: injecting part of anchoring adhesive into the bottom of the drill hole; s8: putting the round head of the medicament tube into the drill hole in an oriented manner and pushing the round head to the bottom of the hole; s9: using an electric hammer or an electric drill and a special mounting clamp, rotating and inserting the screw rod until the bottom of the hole is reached, and stopping rotating immediately when the screw rod is rotated to the bottom of the hole or the mark position on the screw rod; s10: and after the medicament is completely hardened, adding a washer on the screw of the embedded steel plate to fix the embedded steel plate by a nut.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a method for reinforcing a pre-buried steel plate of a tunnel jet fan.
Background
The jet fan embedded steel plate is a connecting piece for installing the jet fan on the top wall of the tunnel.
In tunnel construction, adopt pre-buried steel sheet and the steel construction in tunnel to be connected usually, then pour the gravity transmission that the concrete becomes the pre-buried steel sheet of concrete inner wall in tunnel and give foundation engineering, because the weight of efflux fan is great to in use can produce the vibration, consequently the atress requirement to pre-buried steel sheet is higher.
The embedded steel plate is placed on the reinforcing bar before concrete pouring under the common condition, and in the pouring and vibration process of concrete, partial embedded steel plate can be displaced.
Disclosure of Invention
The invention aims to provide a method for reinforcing an embedded steel plate of a tunnel jet fan, which has the advantage of reinforcing the embedded steel plate which does not meet the requirement of drawing force strength.
The above object of the present invention is achieved by the following technical solutions:
a method for reinforcing a pre-buried steel plate of a tunnel jet fan comprises the following steps: s1: cleaning the surface of the embedded steel plate; s2: determining the position of a drill hole on the embedded steel plate; s3: drilling a hole in the embedded steel plate to the inside of the concrete wall by using an electric drill, wherein the drilled hole is vertical to the embedded steel plate; s4: polishing the bottom of the drilled hole into a circular arc shape; s5: cleaning dust in the drill hole; s6: heating the drill hole, the anchoring adhesive and the medicament tube; s7: injecting part of anchoring adhesive into the bottom of the drill hole, so that the anchoring adhesive covers the bottom of the drill hole to have a certain thickness; s8: putting the round head of the medicament tube into the drill hole in an oriented manner and pushing the round head to the bottom of the hole; s9: using an electric hammer or an electric drill and a special mounting clamp, rotating and inserting the screw rod until the bottom of the hole is reached, and stopping rotating immediately when the screw rod is rotated to the bottom of the hole or the mark position on the screw rod; s10: and after the medicament is completely hardened, adding a washer on the screw of the embedded steel plate to fix the embedded steel plate by a nut.
Furthermore, the diameter of the drill hole is 4-6 mm larger than the diameter of the screw.
Further, the method for cleaning dust in the drill hole comprises the following steps: cleaning dust in the hole by using a high-pressure air pump, or adding an inflator into a brush, wherein the diameter of the brush is basically the same as that of the drilled hole, pushing and pulling the brush back and forth in the hole for a plurality of times to clean the dust in the hole, and blowing the dust for 2-3 times by using the inflator, so that the dust in the hole is thoroughly cleaned.
Further, the method for heating the drill hole comprises the following steps: and inserting a heating rod with a diameter slightly smaller than the drilled hole into the drilled hole to the bottom of the hole, and controlling the temperature of the heating rod to be 60-80 ℃.
Further, the method for heating the anchoring adhesive and the medicament tube comprises the following steps: and coating the medicament tube and filling the container with the anchoring adhesive at the temperature of 60-80 ℃.
Further, the method for grinding the bottom of the drilled hole into a circular arc shape comprises the following steps: and replacing the drill bit of the electric drill, and replacing the special drill bit with a hemispherical end part on the electric drill.
In conclusion, the invention has the following beneficial effects:
(1) before the reagent tube is pushed into the drill hole, the anchoring glue is injected into the bottom of the drill hole, so that the air in the drill hole is exhausted in the process that the reagent tube is pushed into the drill hole, and therefore, bubbles generated after the glue solution and the reagent are solidified can be reduced, and the influence of the bubbles on chemical anchoring is reduced;
(2) the drilling holes, the anchoring adhesive and the medicament tube are heated, so that the mobility of the medicament in the anchoring adhesive and the medicament tube can be increased, the probability that air is not easy to discharge due to low fluid temperature and high viscosity is reduced, and air bubbles generated after the anchoring adhesive and the medicament are solidified are reduced.
Drawings
FIG. 1 is a first block flow diagram of a method of an embodiment of the invention;
FIG. 2 is a block diagram of a method flow of an embodiment of the present invention;
FIG. 3 is a schematic illustration of the borehole of the present invention;
FIG. 4 is a schematic view of the drilled hole bottom of the present invention after rounding;
FIG. 5 is a schematic view of the present invention after the anchor glue is injected into the drilled hole;
FIG. 6 is a schematic view of the reagent vessel of the present invention after being inserted into the rotor hole;
FIG. 7 is a schematic view of the screw of the present invention after being inserted into a borehole;
fig. 8 is a schematic view of the screw of the present invention after the screw cap is installed.
Reference numerals: 1. drilling; 2. pre-burying a steel plate; 3. anchoring glue; 4. a reagent tube; 5. a screw; 6. a gasket; 7. a nut; 8. a sleeve.
Detailed Description
The technical solutions of the embodiments of the present invention will be described below with reference to the accompanying drawings.
The invention discloses a method for reinforcing a pre-buried steel plate of a tunnel jet fan, which comprises the following steps as shown in figures 1 and 2:
s1: cleaning the surface of the embedded steel plate;
specifically, the method comprises the following steps. And (4) carrying out corresponding treatment according to the actual conditions of each construction site, and cleaning to the original structural layer or the stress layer.
S2: determining the position of a drill hole on the embedded steel plate;
specifically, lines are drawn on the embedded steel plate, and hole points of drilled holes are drawn.
S3: drilling a hole in the embedded steel plate to the inside of the concrete wall by using an electric drill, wherein the drilled hole is vertical to the embedded steel plate;
specifically, as shown in fig. 3, it may be ensured that the processing mode of drilling the hole perpendicular to the embedded steel plate is to prepare a sleeve to be directly and radially matched with the electric drill bit, the sleeve is integrally in a circular cylindrical shape, the sleeve is pressed on the embedded steel plate by using a hole point drawn on the embedded steel plate as an axis, and then the drill bit of the electric drill is drilled after penetrating through an inner hole of the sleeve.
S4: polishing the bottom of the drilled hole into a circular arc shape;
specifically, as shown in fig. 4, the drill bit of the electric drill is replaced, a special drill bit with a hemispherical end portion is replaced on the electric drill, and the bottom of the hole is ground. After the hole bottom is polished to be circular arc-shaped, as the drilling hole is downward, after the anchoring adhesive is injected into the hole bottom of the drilling hole, the anchoring adhesive can flow downward, the circular arc-shaped hole bottom and the inner side wall of the hole are in smooth transition, so that the phenomenon that the anchoring adhesive generates bubbles at the transition angle between the hole bottom and the side wall of the hole can be avoided, and if the anchoring adhesive is solidified, the bubbles exist, and the pulling resistance of the screw rod can be reduced.
S5: cleaning dust in the drill hole;
specifically, the dust in the hole is cleaned by a high-pressure air pump method, or an inflator is added by a brush, the diameter of the brush is basically the same as that of the hole, the brush is pushed and pulled back and forth in the hole for a plurality of times to clean the dust in the hole, and then the dust is blown for 2-3 times by the inflator, so that the dust in the hole is thoroughly cleaned.
S6: heating the drill hole, the anchoring adhesive and the medicament tube;
specifically, the method for heating the drill hole comprises the following steps: and inserting a heating rod with a diameter slightly smaller than the drilled hole into the drilled hole to the bottom of the hole, and controlling the temperature of the heating rod to be 60-80 ℃. The method for heating the anchoring adhesive and the medicament tube comprises the following steps: and coating the medicament tube and filling the container with the anchoring adhesive at the temperature of 60-80 ℃. The drilling holes, the anchoring adhesive and the medicament tube are heated, so that the mobility of the medicament in the anchoring adhesive and the medicament tube can be increased, the probability that air is not easy to discharge due to low fluid temperature and high viscosity is reduced, and air bubbles generated after the anchoring adhesive and the medicament are solidified are reduced.
S7: injecting part of anchoring adhesive into the bottom of the drill hole, so that the anchoring adhesive covers the bottom of the drill hole to have a certain thickness;
specifically, as shown in fig. 5, the anchoring adhesive is added first, so that on one hand, the agent tube can be initially stuck to avoid slipping out of the drilled hole; on the other hand, the anchoring adhesive can reduce the gap between the medicament tube and the drill hole, discharge air between the outer wall of the medicament tube and the inner wall of the drill hole, and reduce air bubbles generated after the medicament is solidified.
S8: putting the round head of the medicament tube into the drill hole in an oriented manner and pushing the round head to the bottom of the hole;
specifically, as shown in fig. 6, during the pushing of the reagent tube into the borehole, the anchoring adhesive is gradually squeezed out while the air inside the borehole is evacuated.
S9: using an electric hammer or an electric drill and a special mounting clamp, rotating and inserting the screw rod until the bottom of the hole is reached, and stopping rotating immediately when the screw rod is rotated to the bottom of the hole or the mark position on the screw rod;
specifically, the hammer or drill should be adjusted to a slow gear and should not be impacted. When the mounting fixture is screwed to the bottom of the hole or the mark position on the bolt, the rotation is immediately stopped, the mounting fixture is taken down, and disturbance is avoided after the gel is solidified completely. Over-time rotation will cause glue loss and affect the anchoring force. As shown in fig. 7.
S10: and after the medicament is completely hardened, adding a washer on the screw of the embedded steel plate to fix the embedded steel plate by a nut. As shown in fig. 8.
Claims (4)
1. A method for reinforcing a pre-buried steel plate of a tunnel jet fan is characterized by comprising the following steps:
s1: cleaning the surface of the embedded steel plate;
s2: determining the position of a drill hole on the embedded steel plate;
s3: drilling a hole in the embedded steel plate to the inside of the concrete wall by using an electric drill, wherein the drilled hole is vertical to the embedded steel plate;
s4: polishing the bottom of the drilled hole into a circular arc shape;
s5: cleaning dust in the drill hole;
s6: heating the drill hole, the anchoring adhesive and the medicament tube; the method for heating the drill hole comprises the following steps: inserting a heating rod with a diameter slightly smaller than the drilled hole into the drilled hole to the bottom of the drilled hole, controlling the temperature of the heating rod at 60-80 ℃, and heating the anchoring adhesive and the medicament tube by the following steps: coating the medicament tube and a container filled with anchoring adhesive at the temperature of 60-80 ℃;
s7: injecting part of anchoring adhesive into the bottom of the drill hole, so that the anchoring adhesive covers the bottom of the drill hole to have a certain thickness;
s8: putting the round head of the medicament tube into the drill hole in an oriented manner and pushing the round head to the bottom of the hole;
s9: using an electric hammer or an electric drill and a special mounting clamp, rotating and inserting the screw rod until the bottom of the hole is reached, and stopping rotating immediately when the screw rod is rotated to the bottom of the hole or the mark position on the screw rod;
s10: and after the medicament is completely hardened, adding a washer on the screw of the embedded steel plate to fix the embedded steel plate by a nut.
2. The method for reinforcing the embedded steel plate of the tunnel jet fan according to claim 1, wherein the diameter of the drilled hole is 4-6 mm larger than that of the screw.
3. The method for reinforcing the pre-buried steel plate of the tunnel jet fan according to claim 1, wherein the method for cleaning dust in the drill hole comprises the following steps: cleaning dust in the hole by using a high-pressure air pump, or adding an inflator into a brush, wherein the diameter of the brush is basically the same as that of the drilled hole, pushing and pulling the brush back and forth in the hole for a plurality of times to clean the dust in the hole, and blowing the dust for 2-3 times by using the inflator, so that the dust in the hole is thoroughly cleaned.
4. The method for reinforcing the pre-buried steel plate of the tunnel jet fan according to claim 1, wherein the method for polishing the hole bottom of the drilled hole into a circular arc shape comprises the following steps: and replacing the drill bit of the electric drill, and replacing the special drill bit with a hemispherical end part on the electric drill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041731.3A CN109779668B (en) | 2019-01-16 | 2019-01-16 | Tunnel jet fan embedded steel plate reinforcing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910041731.3A CN109779668B (en) | 2019-01-16 | 2019-01-16 | Tunnel jet fan embedded steel plate reinforcing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109779668A CN109779668A (en) | 2019-05-21 |
| CN109779668B true CN109779668B (en) | 2020-12-25 |
Family
ID=66500792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910041731.3A Active CN109779668B (en) | 2019-01-16 | 2019-01-16 | Tunnel jet fan embedded steel plate reinforcing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109779668B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424446A (en) * | 2019-07-15 | 2019-11-08 | 中建一局集团安装工程有限公司 | Fixing construction method for chemical anchor bolts of distribution cabinet |
| CN114396174B (en) * | 2022-01-11 | 2023-12-12 | 中冶南方城市建设工程技术有限公司 | Reinforcing method capable of improving bearing capacity of embedded steel plate |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1201517A1 (en) * | 1984-04-02 | 1985-12-30 | Карагандинское Ордена Октябрьской Революции Производственное Объединение По Добыче Угля | Main airing fan unit |
| CA2529372C (en) * | 2004-11-26 | 2009-10-27 | Patent Applied Technology | Affixing an anchor in a drilled hole |
| NO324914B1 (en) * | 2006-01-10 | 2008-01-07 | Protan As | Method and system for supplying fresh air to a stuff in a tunnel or in a mine. |
| CN201513193U (en) * | 2009-10-15 | 2010-06-23 | 中国水电顾问集团华东勘测设计研究院 | Structure for mounting jet rod in tunnel through adopting prestressed anchor rod |
| CN203769826U (en) * | 2014-03-31 | 2014-08-13 | 中铁第一勘察设计院集团有限公司 | Lateral type tunnel fan erecting device |
| CN105714697B (en) * | 2016-03-14 | 2017-11-03 | 岩土科技股份有限公司 | Concrete bridge beam slab reinforcement means based on pre-stressed steel plate |
-
2019
- 2019-01-16 CN CN201910041731.3A patent/CN109779668B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109779668A (en) | 2019-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109779668B (en) | Tunnel jet fan embedded steel plate reinforcing method | |
| CN109057840A (en) | Adaptive grouting and reinforcing anchor pole and its anchoring construction method under a kind of high stress | |
| JP2010013858A (en) | Anchoring method for shear reinforcement material | |
| CN114396022A (en) | Method for repairing dam crack defects by using magnetic mortar | |
| CN109235779A (en) | A kind of self-centering full grout sleeve construction of achievable reinforcing bar and the practice | |
| CN212561935U (en) | Drilling-free embedded part for chemically planting steel bars of constructional column | |
| CN203891754U (en) | Rear-impact self-propelled anchoring device | |
| CN203080519U (en) | One-way rotary spraying anchor rod and anchor rod construction device | |
| CN106812473B (en) | The method that piled anchor of putting more energy into is replaced using the whirl spraying drilling tool construction pressure injection with helical blade | |
| CN210217684U (en) | Device for quickly fixing wall and stopping leakage | |
| JP5474900B2 (en) | Method for cleaning voids in concrete slabs | |
| CN205605114U (en) | Karst karst area prestressed anchorage cable drilling equipment | |
| CN104074535A (en) | Composite reinforcing method for grotto roof peeling defects of sandstone grotto | |
| KR100405186B1 (en) | Injector for grouting of concrete structure and construction method using it | |
| CN201242017Y (en) | Casing tube interlayer grouting external reinforced restoring pipeline | |
| CN103882859B (en) | A kind of original state of Shi Hanzhang fetches earth cast-with-pressure concrete pile and construction method thereof | |
| CN210827606U (en) | Grouting head | |
| CN104110032B (en) | Major diameter cavity long spire thin wall filling pile pipe casing | |
| CN111364797A (en) | Building crack repairing equipment and using method thereof | |
| CN207988544U (en) | A kind of concrete structure depth filling crack with glue bar | |
| CN218438065U (en) | Vitrified tile pastes hollowing and restores structure and equipment thereof | |
| CN216974273U (en) | Crack repairing device | |
| CN203768897U (en) | Situ soil sampling cast-with-pressure concrete pile bearing prestress | |
| KR101183927B1 (en) | Repair agent infusion system of ground and strukture repair construction for construction structure | |
| CN214062995U (en) | Device of underground structure seepage water slip casting syringe needle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |