CN115182764A - Surrounding rock deformation monitoring anchor rod with high-strength rock burst resistance characteristic - Google Patents
Surrounding rock deformation monitoring anchor rod with high-strength rock burst resistance characteristic Download PDFInfo
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- CN115182764A CN115182764A CN202210514876.2A CN202210514876A CN115182764A CN 115182764 A CN115182764 A CN 115182764A CN 202210514876 A CN202210514876 A CN 202210514876A CN 115182764 A CN115182764 A CN 115182764A
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- 239000011435 rock Substances 0.000 title claims abstract description 97
- 238000012544 monitoring process Methods 0.000 title claims abstract description 31
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 238000004873 anchoring Methods 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 210000000078 claw Anatomy 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 14
- 238000001125 extrusion Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
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- 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
- E21D21/0093—Accessories
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- 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)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a surrounding rock deformation monitoring anchor rod with high-strength rock burst resistance, which comprises an anchor rod body, wherein the head end of the anchor rod body is provided with an anchor rod fixing end socket; the anchor rod through hole is formed in the anchor rod body; the head end of the rope ruler is fixedly connected with the anchor rod fixing port, and the tail end of the rope ruler extends out of the anchor rod body through the anchor rod through hole; and the rock burst resisting device is arranged on the outer peripheral side of the anchor rod body. Based on the fact that the occurrence frequency of rock burst is increased, the difficulty of supporting the anchor rod by means of self supporting strength in the monitoring process is high, the rock burst resisting device is adopted, huge buffer force can be generated, huge impact ground stress generated due to surrounding rock displacement can be offset, and accurate measurement can be conducted by observing the front and back change of the flush position of the rope ruler on the anchor rod body before and after deformation through the deformation of surrounding rock on the basis of observing the front and back change of the flush position of the rope ruler on the anchor rod body and the flush position of the tail end outlet of the anchor rod through hole.
Description
[ technical field ] A method for producing a semiconductor device
The application relates to the technical field of underground engineering anchor rod support, in particular to a surrounding rock deformation monitoring anchor rod with high-strength rock burst resistance.
[ background of the invention ]
The surrounding rock deflection is big, and rate of deformation is fast, and rock burst number of times increases, and the degree of difficulty that monitoring stock relied on self to strut intensity in the monitoring process and strut becomes higher and higher, and the monitoring stock struts the possibility that became invalid more and more, and the monitoring data distortion that often leads to the stock to become invalid suddenly because of the ground pressure impact when traditional detection stock carries out data monitoring.
A deep base point displacement meter is used for measuring the displacement of the surrounding rock at the present stage, and although the deep base point displacement meter using the drilling measurement technology has a simple principle and is convenient to operate, if the surrounding rock suddenly generates rock burst during measurement, the measurement result may not be accurate, and safety accidents may occur.
[ summary of the invention ]
The invention provides a surrounding rock deformation monitoring anchor rod with high-strength rock burst resistance, and aims to solve the problem that a measuring result is inaccurate when rock burst occurs.
The invention is realized by the following technical scheme:
a surrounding rock deformation monitoring anchor rod with high rock burst resistance characteristics comprises:
the anchor rod body is provided with an anchor rod fixing end at the head end;
the anchor rod through hole is formed in the anchor rod body;
the head end of the rope ruler is fixedly connected with the anchor rod fixing end, and the tail end of the rope ruler extends out of the anchor rod body through the anchor rod through hole;
and the rock burst resisting device is arranged on the outer peripheral side of the anchor rod body.
According to the surrounding rock deformation monitoring anchor rod with the high-strength rock burst resistance characteristic, the zero scale mark of the rope ruler is level to the position of the tail end hole opening of the anchor rod through hole.
As above a country rock deformation monitoring stock with high-strength rock burst resistance characteristic, the stock body is equipped with the locating part of cover on its section that exposes, the locating part pass through the mounting with stock body fixed connection.
As above-mentioned one kind has high intensity and resists the surrounding rock deformation monitoring stock of rock burst characteristic, the fixed end of stock includes the fixed hook that extends from the head end of stock body to the end of stock body.
According to the surrounding rock deformation monitoring anchor rod with the high-strength anti-impact pressure characteristic, the anti-impact pressure devices are distributed on the anchor rod body along the axial direction of the anchor rod body and comprise a plurality of anti-impact units arranged on the outer peripheral side of the anchor rod body in a surrounding mode, each anti-impact unit comprises two baffle plates which are oppositely arranged to form a mounting groove, buffer parts arranged at two ends of the inner side of the mounting groove, a pressure-bearing base arranged between the two buffer parts and an anti-impact plate matched and connected with the pressure-bearing base, and the anti-impact plate moves along the radial direction of the anchor rod body to extrude the pressure-bearing base so that the pressure-bearing base extrudes the buffer parts along the axial direction of the anchor rod body.
As above a country rock deformation monitoring stock with high-strength rock burst resistance characteristic, the inboard extrusion end that is equipped with of board that shocks resistance, be equipped with in the pressure-bearing base and be used for the confession the extrusion end is followed stock body radial movement's pressure-bearing groove.
As the surrounding rock deformation monitoring anchor rod with the high-strength rock burst resistance characteristic, the pressure bearing groove comprises a plurality of unit holes distributed in the radial direction of the anchor rod body, two adjacent unit holes are communicated, each unit hole comprises the annular inclined plane and the circular through hole arranged at the end part of the annular inclined plane, and the inner diameter of the inner cavity formed by the annular inclined plane is gradually reduced from outside to inside in the radial direction of the anchor rod body.
A construction method of a surrounding rock deformation monitoring anchor rod applying high-strength rock burst resistance characteristics is characterized by comprising the following steps:
step S1, drilling an anchor hole in a rock mass to be supported, wherein the length of the anchor hole is smaller than the integral length of an anchor rod to be installed, and the diameter of the anchor hole is larger than the outer diameter length of an anti-rock-burst device installed on the anchor rod;
s2, putting an anchoring agent into the anchor hole, and putting the prepared anchor rod into the anchor hole integrally;
and S3, pressing the anchor rod body into the anchor hole through the anchor rod mounting machine, extruding and uniformly stirring the anchoring agent to fill the anchor hole, and screwing the nut to apply a certain pretightening force to fix the exposed section of the anchor rod after the anchoring agent is solidified.
And S4, observing the reading of the flush part of the rope ruler on the anchor rod and the tail end outlet of the through hole of the anchor rod to judge the initial surrounding rock moving distance.
And S5, after a certain time, observing the reading of the flush part of the rope ruler on the anchor rod and the tail end outlet of the through hole of the anchor rod again, and subtracting the reading obtained in the primary measurement from the newly measured reading to confirm the moving distance of the surrounding rock in the current state.
According to the construction method of the surrounding rock deformation monitoring anchor rod with the high-strength anti-rock-pressure-burst characteristic, in the step S4, the part of the scale extending from the zero scale to the outside of the anchor rod body of the rope ruler is the positive scale, and the part of the scale extending to the inside of the anchor rod through hole is the negative scale.
Compared with the prior art, the method has the following advantages:
1. the anti-rock-burst device solves the problems that the common anchor rod is easy to lose efficacy in the supporting process of the easily deformable rock body, the anchor rod is easy to shear and break due to overlarge rock burst and the like.
2. The invention solves the problems of anchoring of the easily deformable surrounding rock and measuring the displacement of the surrounding rock by different readings displayed on the rope ruler at the tail end of the through hole of the anchor rod, can keep the anchor rod to extend with different resistances when the rock body is displaced, measures the displacement of the surrounding rock, and has better buffer effect on the surrounding rock with overlarge rock burst.
3. The invention has simple structure, convenient use and operation and reliable measuring result, and can measure the displacement of the surrounding rock by a single anchor rod.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the anti-rock-burst apparatus of the present invention;
FIG. 3 is a schematic diagram of the structure of the measuring device of the present invention;
fig. 4 is a schematic structural view of the anchor fixing end of the present invention;
FIG. 5 isbase:Sub>A sectional view of the anti-impact press apparatus of FIG. 2 taken along the A-A plane;
FIG. 6 is a sectional view of the anti-impact press apparatus of FIG. 2 taken along the plane B-B;
fig. 7 is a sectional view of the impact-resistant press apparatus of fig. 2 taken along the plane C-C.
[ detailed description ] embodiments
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
When embodiments of the present invention refer to the ordinal numbers "first", "second", etc., it should be understood that the words are used for distinguishing between them unless the context clearly dictates otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 7, a surrounding rock deformation monitoring anchor rod having high impact compression resistance characteristics, comprising:
the anchor rod comprises an anchor rod body 1, wherein the head end of the anchor rod body is provided with an anchor rod fixing end 2;
the anchor rod through hole 3 is arranged in the anchor rod body 1;
the head end of the rope ruler 4 is fixedly connected with the anchor rod fixing end 2, and the tail end of the rope ruler extends out of the anchor rod body 1 through the anchor rod through hole 3;
and the rock burst resisting device 5 is arranged on the outer peripheral side of the anchor rod body 1.
In the embodiment, the invention researches the anchoring technology of weak and easily deformable surrounding rocks and the technical achievements in related fields, solves the problems that a common anchor rod is easy to lose effectiveness in the supporting process of an easily deformable rock body, the anchor rod is easy to shear and break due to overlarge rock burst and the like, has a simple structure, is convenient to use and operate, has reliable measuring results, and can measure the displacement of the surrounding rocks by using a single anchor rod.
Further, the zero scale mark of rope chi 4 with the terminal drill way position of stock through-hole 3 is held level, and in this embodiment, the zero scale mark of rope chi and the terminal of stock through-hole are all in the section that exposes of stock body easily the survey crew measures, and the structure that zero scale mark and terminal drill way position were held level is simple moreover, easily the survey crew carry out the reading and measure.
Further, the stock body 1 is equipped with the locating part 6 of cover on its section that exposes, locating part 6 through the mounting 7 with stock body fixed connection, in this embodiment, locating part 6 can with stock body 1 pretension is fixed on the country rock, makes the device not take place the skew, easily survey personnel's measurement.
Further, the fixed end 2 of stock includes the fixed hook 8 that extends from the head end of stock body 1 to the end of stock body 1, in this embodiment, fixed hook 8 can make the stock body 1 when receiving the pulling force, the stock head end has very strong pull resistance the anchoring agent with the position of assurance stock head end that can be very big keeps unchangeable under the effect of fixed hook 8.
Further, a plurality of anti-impact devices 5 are distributed on the anchor rod body 1 along the axial direction thereof, each anti-impact device 5 includes a plurality of anti-impact units 9 arranged around the outer periphery of the anchor rod body 1, each anti-impact unit 9 includes two baffles 901 arranged oppositely to form an installation groove 902, buffer portions 903 arranged at two ends of the inner side of the installation groove 902, a pressure-bearing base 904 arranged between the two buffer portions 903, and an anti-impact plate 905 in fit connection with the pressure-bearing base 904, the anti-impact plate 905 moves along the radial direction of the anchor rod body 1 to press the pressure-bearing base 904, so that the pressure-bearing base 904 presses the buffer portions 903 along the axial direction of the anchor rod body 1.
Further, the inner side of the impact-resistant plate 905 is provided with an extrusion end 906, and the pressure-bearing base 904 is provided with a pressure-bearing groove 907 for the extrusion end 906 to move along the radial direction of the anchor rod body 1.
Further, the bearing groove 907 includes a plurality of unit holes 908 distributed along the radial direction of the anchor body 1, two adjacent unit holes 908 are communicated, the unit holes 908 include an annular inclined plane 909 and a circular through hole 910 arranged at the end of the annular inclined plane 909, the inner diameter of an inner cavity formed by the annular inclined plane 909 gradually decreases from outside to inside along the radial direction of the anchor body 1, in this embodiment, three mutually communicated unit holes 908 are ladder grooves, the extrusion end 906 is also a ladder end, each ladder groove is larger than the ladder end 906, the ladder end 906 can be just placed in the ladder groove, when an impact force is applied, the ladder end 906 can move from a first ladder groove to a second ladder groove in the bearing base 904, and when the impact force is large enough, the second ladder groove can move to a third ladder groove.
In this embodiment, a construction method of a surrounding rock deformation monitoring anchor rod applying high-strength anti-rock-pressure-burst characteristics includes the following steps:
step S1, drilling an anchor hole 3 in a rock mass to be supported, wherein the length of the anchor hole is less than the whole length of an anchor rod body 1 to be installed, and the diameter of the anchor hole is greater than the outer diameter length of an anti-rock-pressure device 5 installed on the anchor rod body 1;
s2, putting an anchoring agent into the anchor hole, and putting the prepared anchor rod body 1 into the anchor hole integrally;
and S3, pressing the anchor rod body into the anchor hole through the anchor rod mounting machine, extruding and uniformly stirring the anchoring agent to fill the anchor hole, and screwing the nut to apply a certain pretightening force to fix the exposed section of the anchor rod after the anchoring agent is solidified.
And S4, observing the reading of the flush part of the rope ruler 4 on the anchor rod body 1 and the tail end outlet of the anchor rod through hole 3 to judge the initial surrounding rock moving distance.
And S5, after a certain time, observing the reading of the flush part of the rope ruler 4 on the anchor rod body 1 and the tail end outlet of the anchor rod through hole 3 again, and subtracting the reading obtained in the primary measurement from the newly measured reading to confirm the moving distance of the surrounding rock in the current state.
In this embodiment, the anchor of yielding surrounding rock and the measurement problem of surrounding rock displacement are solved to the terminal different readings that show on the rope chi of stock through-hole, can keep the stock to have the extension of different resistances when the displacement takes place for the rock mass to measure the displacement of surrounding rock, and have better cushioning effect to the too big surrounding rock of rock burst.
Further, in step S4, the part of the scale extending from the zero scale to the anchor rod body of the rope ruler 4 is a positive scale, and the part of the scale extending into the anchor rod through hole 3 is a negative scale.
The working principle is as follows:
when the device is applied to a roadway, when surrounding rocks displace to generate larger rock burst which exceeds the range which can be born by the anchor rod, the rock burst resisting device on the anchor rod can play a role in counteracting the rock burst generated by the displacement of the surrounding rocks. If the displacement of the surrounding rock is gradually increased, the buffer force generated by the rock burst resisting device is also gradually increased so as to further offset rock burst generated by the displacement of the surrounding rock. And the deformation that the country rock took place also can carry out accurate measurement through the rope chi reading on the stock body before the deformation.
The foregoing is illustrative of one embodiment provided in connection with the detailed description and is not intended to limit the invention to the precise form set forth. Similar or identical methods, structures and the like, or several technical deductions or substitutions made on the premise of the conception of the application, should be regarded as the protection scope of the application.
Claims (9)
1. A surrounding rock deformation monitoring anchor rod with high-strength rock burst resistance characteristics is characterized by comprising:
the anchor rod comprises an anchor rod body (1), wherein the head end of the anchor rod body is provided with an anchor rod fixing end (2);
the anchor rod through hole (3) is formed in the anchor rod body (1);
the head end of the rope ruler (4) is fixedly connected with the anchor rod fixing end head (2), and the tail end of the rope ruler extends out of the anchor rod body (1) through the anchor rod through hole (3);
and the rock burst resisting device (5) is arranged on the outer peripheral side of the anchor rod body (1).
2. A surrounding rock deformation monitoring anchor rod with high rock burst resistance characteristic according to claim 1, characterized in that the zero graduation line of the rope ruler (4) is level with the position of the terminal hole of the anchor rod through hole (3).
3. The surrounding rock deformation monitoring anchor rod with the high rock burst resistance characteristic according to claim 1, wherein the anchor rod body (1) is provided with a limiting part (6) sleeved on an exposed section of the anchor rod body, and the limiting part (6) is fixedly connected with the anchor rod body through a fixing part (7).
4. A wall rock deformation monitoring anchor rod with high rock burst resistance characteristic according to claim 1, characterized in that the anchor rod fixing end head (2) comprises a fixing claw (8) extending from the head end of the anchor rod body (1) to the tail end of the anchor rod body (1).
5. The surrounding rock deformation monitoring anchor rod with the high-strength anti-impact pressure characteristic is characterized in that a plurality of anti-impact pressure devices (5) are distributed on the anchor rod body (1) along the axial direction of the anchor rod body, each anti-impact pressure device (5) comprises a plurality of anti-impact units (9) arranged on the outer peripheral side of the anchor rod body (1) in a surrounding mode, each anti-impact unit (9) comprises two baffle plates (901) oppositely arranged to form an installation groove (902), buffer parts (903) arranged at two inner ends of the installation groove (902), a pressure bearing base (904) arranged between the two buffer parts (903) and an anti-impact plate (905) matched and connected with the pressure bearing base (904), and the anti-impact plate (905) is moved along the radial direction of the anchor rod body (1) to extrude the pressure bearing base (904) to enable the pressure bearing base (904) to extrude the buffer parts (903) along the axial direction of the anchor rod body (1).
6. A surrounding rock deformation monitoring anchor rod with high impact and compression resistance characteristics according to claim 5, characterized in that a squeezing end (906) is arranged on the inner side of the impact resistance plate (905), and a pressure bearing groove (907) for enabling the squeezing end (906) to move along the radial direction of the anchor rod body (1) is arranged in the pressure bearing base (904).
7. A high-impact-resistant surrounding rock deformation monitoring anchor rod with high rock pressure resistance according to claim 6, wherein the pressure bearing groove (907) comprises a plurality of unit holes (908) distributed along the radial direction of the anchor rod body (1), two adjacent unit holes (908) are communicated, each unit hole (908) comprises an annular inclined surface (909) and a circular through hole (910) arranged at the end of the annular inclined surface (909), and the inner diameter of an inner cavity formed by the annular inclined surface (909) is gradually reduced from the outside to the inside along the radial direction of the anchor rod body (1).
8. A construction method of a surrounding rock deformation monitoring anchor rod applying high-strength rock burst resistance characteristics is characterized by comprising the following steps:
step S1, drilling an anchor hole in a rock mass to be supported, wherein the length of the anchor hole is smaller than the whole length of an anchor rod body (1) to be installed, and the diameter of the anchor hole is larger than the outer diameter length of an anti-rock-pressure device (5) installed on the anchor rod body (1);
s2, putting an anchoring agent into the anchor hole, and integrally putting the prepared anchor rod body (1) into the anchor hole;
and S3, pressing the anchor rod body (1) into the anchor hole through an anchor rod mounting machine, extruding and uniformly stirring the anchoring agent to fill the anchor hole, and screwing the nut to apply a certain pretightening force to fix the exposed section of the anchor rod after the anchoring agent is solidified.
And S4, observing the reading of the flush part of the rope ruler (4) on the anchor rod body (1) and the tail end outlet of the anchor rod through hole (3) to judge the initial surrounding rock moving distance.
And S5, after a certain period of time, observing the reading of the flush part of the rope ruler (4) on the anchor rod body (1) and the tail end outlet of the anchor rod through hole (3), and subtracting the reading obtained in the primary measurement from the newly measured reading to confirm the moving distance of the surrounding rock in the current state.
9. The construction method of the surrounding rock deformation monitoring anchor rod with the high rock burst resistance characteristic according to the claim 8, wherein in the step S4, the part of the scale extending from the zero scale to the anchor rod body of the rope ruler (4) is a positive scale, and the part of the scale extending into the anchor rod through hole (3) is a negative scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210514876.2A CN115182764A (en) | 2022-05-12 | 2022-05-12 | Surrounding rock deformation monitoring anchor rod with high-strength rock burst resistance characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210514876.2A CN115182764A (en) | 2022-05-12 | 2022-05-12 | Surrounding rock deformation monitoring anchor rod with high-strength rock burst resistance characteristic |
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| CN115182764A true CN115182764A (en) | 2022-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210514876.2A Pending CN115182764A (en) | 2022-05-12 | 2022-05-12 | Surrounding rock deformation monitoring anchor rod with high-strength rock burst resistance characteristic |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117949304A (en) * | 2024-03-26 | 2024-04-30 | 河海大学 | Test device and method for simulating deep constant-resistance anchor rod drawing |
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| CN102518436A (en) * | 2011-11-14 | 2012-06-27 | 山东科技大学 | Method for controlling tectonic rock burst in coal mine tunneling |
| CN103982208A (en) * | 2014-05-19 | 2014-08-13 | 辽宁工程技术大学 | Mine inner and outer turnover resistive energy-absorption anti-impact device |
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| CN117949304A (en) * | 2024-03-26 | 2024-04-30 | 河海大学 | Test device and method for simulating deep constant-resistance anchor rod drawing |
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