CN113417681A - non-Newtonian fluid yielding support anchor rod and use method thereof - Google Patents
non-Newtonian fluid yielding support anchor rod and use method thereof Download PDFInfo
- Publication number
- CN113417681A CN113417681A CN202110923566.1A CN202110923566A CN113417681A CN 113417681 A CN113417681 A CN 113417681A CN 202110923566 A CN202110923566 A CN 202110923566A CN 113417681 A CN113417681 A CN 113417681A
- Authority
- CN
- China
- Prior art keywords
- anchor rod
- newtonian fluid
- rod
- yielding support
- roadway
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000005553 drilling Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000004873 anchoring Methods 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 239000011435 rock Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 5
- 238000005065 mining Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
The invention relates to the technical field of roadway support, and particularly discloses a non-Newtonian fluid yielding support anchor rod and a using method thereof. After the roadway is tunneled, drilling holes at the designated position; inserting a lower anchor rod connecting rod into the non-Newtonian fluid chamber to fixedly connect the lower anchor rod with the upper anchor rod, and injecting liquid into the non-Newtonian fluid chamber through the liquid injection hole and plugging the liquid injection hole when the lower anchor rod is contracted to the end; and placing an anchoring agent in the drilled hole and inserting an anchor rod, performing high-speed rotation by using a drilling machine to mix and solidify the anchoring agent, installing an anchor rod tray at the screw rod, and tightening a nut by using a torque wrench. The invention enhances the shock resistance of the anchor rod and has the characteristics of simple operation, safety, reliability and low cost.
Description
Technical Field
The invention relates to the technical field of roadway support, in particular to a non-Newtonian fluid yielding support anchor rod and a using method thereof.
Background
Deep coal mining is a problem to be faced by most of main coal mining countries in the world at present and in the future, and with the large energy demand, the mine deepening speed is accelerated, and some coal mines are turned or are about to enter deep mining. Along with the increase of the mining depth, the geological conditions are more and more complex, the stress of coal rock bodies is increased, the number of coal beds with rock burst danger is increased, mines with rock burst are gradually increased, and the occurrence frequency, strength and damage degree of the rock burst are gradually serious along with the increase of the depth. Roadway surrounding rocks also often show the characteristics of high stress, large deformation and the like, the conventional anchor rod has limited impact resistance, and is difficult to support the surrounding rocks under the action of strong impact, once the deformation of the roadway surrounding rocks exceeds the range which can be borne by the anchor rod, accidents can be caused by the failure of support equipment, so that serious threats are caused to mining safety, and serious losses are caused to enterprises. Therefore, upgrading and transformation are needed on the basis of the existing supporting anchor rod device to overcome the existing problems and defects, and the non-Newtonian fluid yielding supporting anchor rod and the using method are provided.
Disclosure of Invention
The invention provides a non-Newtonian fluid yielding support anchor rod and a using method thereof, aiming at the problems that the existing anchor rod has limited shock resistance and the anchor rod is frequently broken or a steel bar is pulled out in the case of rock burst or rock burst.
The invention adopts the following technical scheme: a non-Newtonian fluid lets presses support stock and application method, its characterized in that specifically includes: drilling a surrounding rock, filling liquid into an anchor rod and supporting the anchor rod:
after a roadway is tunneled, drilling at a specified position of the roadway;
inserting a lower anchor rod connecting rod into the non-Newtonian fluid chamber to enable the lower anchor rod to be fixedly connected with the upper anchor rod, and after the lower anchor rod is contracted to the end, injecting liquid into the non-Newtonian fluid chamber through the liquid injection hole and plugging the liquid injection hole;
and step three, placing an anchoring agent in the drilled hole, inserting an anchor rod, performing high-speed rotation by using a drilling machine to mix and solidify the anchoring agent, installing an anchor rod tray at the screw rod, and tightening a nut by using a torque wrench.
Specifically, in the second step, the upper anchor rod and the lower anchor rod freely slide along the vertical direction.
Specifically, the upper and lower anchor rod segments in the second step can be freely selected and are not limited to the middle point.
Specifically, in the second step, the sealing washer does not limit the sliding of the lower anchor rod, but controls the outflow of the non-flowing fluid.
Specifically, the selection of the non-Newtonian fluid in the second step is judged according to the field environment and the economical efficiency.
Specifically, in the third step, the installation speed of the anchor rod needs to be controlled, and the non-Newtonian fluid is controlled to be in a hardening state.
Drawings
Fig. 1 is a schematic diagram of a non-newtonian fluid yielding support bolt and method of use embodying the present invention.
Figure 2 is a side view of a non-newtonian fluid yielding support bolt and method of use embodying the present invention.
Fig. 3 is a schematic view of the internal structure of the filling apparatus.
In the figure: 1 is a screw; 2 is an upper anchor rod; 3 is a lower anchor rod bayonet lock; 4 is a liquid injection hole; 5 is a non-Newtonian fluid chamber; 6 is a lower anchor rod connecting rod; 7 is an upper anchor rod limit pin; 8 is a sealing ring pad; and 9 is a lower anchor rod.
Detailed Description
The invention is further explained below with reference to the drawings.
The invention provides a non-Newtonian fluid yielding support anchor rod and a using method thereof, and the non-Newtonian fluid yielding support anchor rod specifically comprises three steps of drilling a surrounding rock, filling liquid into the anchor rod and supporting the anchor rod, and is characterized in that:
after a roadway is tunneled, drilling at a specified position of the roadway;
inserting the lower anchor rod connecting rod 6 into the non-Newtonian fluid chamber 5 to fixedly connect the lower anchor rod 9 with the upper anchor rod 2, and after the lower anchor rod 9 is contracted to the end, injecting liquid into the non-Newtonian fluid chamber 5 through the liquid injection hole 4 and plugging the liquid injection hole 4;
and step three, placing an anchoring agent in the drilled hole, inserting an anchor rod, performing high-speed rotation by using a drilling machine to mix and solidify the anchoring agent, installing an anchor rod tray at the screw 1, and tightening a nut by using a torque wrench.
Specifically, in the second step, the upper middle anchor rod 2 and the lower anchor rod 9 freely slide along the vertical direction.
Specifically, in the second step, the sections of the upper anchor rod 2 and the lower anchor rod 9 can be freely selected and are not limited to the middle point.
Specifically, in the second step, the gasket 8 does not limit the sliding of the lower anchor rod 9, but controls the outflow of the non-flowing fluid.
Specifically, the selection of the non-Newtonian fluid in the second step is judged according to the field environment and the economical efficiency.
Specifically, in the third step, the installation speed of the anchor rod needs to be controlled, and the non-Newtonian fluid is controlled to be in a hardening state.
It should be understood, however, that the description herein of specific embodiments is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A non-Newtonian fluid lets presses support stock and application method, its characterized in that specifically includes: drilling surrounding rock, filling liquid into an anchor rod and supporting the anchor rod.
After a roadway is tunneled, drilling at a specified position of the roadway;
inserting a lower anchor rod connecting rod into the non-Newtonian fluid chamber to enable the lower anchor rod to be fixedly connected with the upper anchor rod, and after the lower anchor rod is contracted to the end, injecting liquid into the non-Newtonian fluid chamber through the liquid injection hole and plugging the liquid injection hole;
and step three, placing an anchoring agent in the drilled hole, inserting an anchor rod, performing high-speed rotation by using a drilling machine to mix and solidify the anchoring agent, installing an anchor rod tray at the screw rod, and tightening a nut by using a torque wrench.
2. A non-Newtonian fluid yielding support anchor rod and a use method thereof according to claim 1, wherein in the second step, the upper anchor rod and the lower anchor rod freely slide along a vertical direction.
3. A non-Newtonian fluid yield support bolt and method of use according to claim 1, wherein in step two the upper and lower bolt sections are freely selectable and not confined to the midpoint.
4. A non-newtonian fluid yielding support bolt and method of use according to claim 1, wherein the gasket does not restrict the sliding of the lower bolt in step two, but controls the outflow of non-flowing fluid.
5. The non-Newtonian fluid yielding support anchor rod and the use method thereof according to claim 1, wherein the selection of the non-Newtonian fluid in the second step is judged according to the field environment and the economical efficiency.
6. The non-Newtonian fluid yielding support anchor rod and the use method thereof according to claim 1, wherein the installation speed of the anchor rod in the third step needs to be controlled, and the non-Newtonian fluid is controlled to be in a hardening state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110923566.1A CN113417681A (en) | 2021-08-12 | 2021-08-12 | non-Newtonian fluid yielding support anchor rod and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110923566.1A CN113417681A (en) | 2021-08-12 | 2021-08-12 | non-Newtonian fluid yielding support anchor rod and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113417681A true CN113417681A (en) | 2021-09-21 |
Family
ID=77719040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110923566.1A Pending CN113417681A (en) | 2021-08-12 | 2021-08-12 | non-Newtonian fluid yielding support anchor rod and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113417681A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427473A (en) * | 2022-01-24 | 2022-05-03 | 渭南陕煤启辰科技有限公司 | Method for improving support performance of broken surrounding rock anchor rod |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573279A (en) * | 2013-11-14 | 2014-02-12 | 山东科技大学 | Mining telescopic energy adsorption anti-impact viscous damping anchor rod and supporting method thereof |
| CN204552782U (en) * | 2015-04-28 | 2015-08-12 | 西安科技大学 | A kind of anchor pole is by pressure device |
| CN109184765A (en) * | 2018-08-03 | 2019-01-11 | 中南大学 | A kind of stable state allow pressure release can detachable hydraulic anchor pole and its method for protecting support |
| CN110761820A (en) * | 2019-11-07 | 2020-02-07 | 长江水利委员会长江科学院 | Yielding anchor rod design method suitable for large deformation of weak surrounding rock |
| US20210040849A1 (en) * | 2017-06-28 | 2021-02-11 | Shandong University Of Science And Technology | Grouting anchor bolt and grouting anchor cable for supporting of large deformation and constant resistance and quantitative roadway supporting method |
| CN113006831A (en) * | 2021-05-06 | 2021-06-22 | 山东科技大学 | Steel arch yielding buffer support for roadway miner and implementation method thereof |
-
2021
- 2021-08-12 CN CN202110923566.1A patent/CN113417681A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573279A (en) * | 2013-11-14 | 2014-02-12 | 山东科技大学 | Mining telescopic energy adsorption anti-impact viscous damping anchor rod and supporting method thereof |
| CN204552782U (en) * | 2015-04-28 | 2015-08-12 | 西安科技大学 | A kind of anchor pole is by pressure device |
| US20210040849A1 (en) * | 2017-06-28 | 2021-02-11 | Shandong University Of Science And Technology | Grouting anchor bolt and grouting anchor cable for supporting of large deformation and constant resistance and quantitative roadway supporting method |
| CN109184765A (en) * | 2018-08-03 | 2019-01-11 | 中南大学 | A kind of stable state allow pressure release can detachable hydraulic anchor pole and its method for protecting support |
| CN110761820A (en) * | 2019-11-07 | 2020-02-07 | 长江水利委员会长江科学院 | Yielding anchor rod design method suitable for large deformation of weak surrounding rock |
| CN113006831A (en) * | 2021-05-06 | 2021-06-22 | 山东科技大学 | Steel arch yielding buffer support for roadway miner and implementation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427473A (en) * | 2022-01-24 | 2022-05-03 | 渭南陕煤启辰科技有限公司 | Method for improving support performance of broken surrounding rock anchor rod |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210921 |
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| RJ01 | Rejection of invention patent application after publication |