CN111189603A - Roadway anchor rod axial impact resistance in-situ testing device and testing method - Google Patents
Roadway anchor rod axial impact resistance in-situ testing device and testing method Download PDFInfo
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- CN111189603A CN111189603A CN202010084020.7A CN202010084020A CN111189603A CN 111189603 A CN111189603 A CN 111189603A CN 202010084020 A CN202010084020 A CN 202010084020A CN 111189603 A CN111189603 A CN 111189603A
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Abstract
The invention discloses an in-situ testing device and a testing method for axial impact resistance of a roadway anchor rod, wherein the anchor rod is arranged in surrounding rock of a roadway in a penetrating manner, the anchor rod is provided with an overhanging end, the overhanging end penetrates out of the surrounding rock of the roadway, and the testing device comprises: the left side and the right side of the lower surface of the pressure-bearing beam are respectively provided with a support upright post, and the bottom of each support upright post is provided with a base; the energy impact unit comprises a lifting connection mechanism and an impact weight, wherein the lifting connection mechanism is used for lifting the impact weight to a set height and then releasing the impact weight to form impact energy; the energy conduction unit is respectively connected with the energy impact unit and the outward extending end of the anchor rod; and the data monitoring unit is used for monitoring the impact resistance data of the anchor rod. The invention realizes the in-situ test of the impact resistance of the anchor rod and obtains real field data; meanwhile, the invention can adapt to various anchor rod arrangement conditions, the impact energy is convenient to regulate and control, and the result is easy to analyze.
Description
Technical Field
The invention relates to the technical field of mining engineering test research, in particular to an in-situ testing device and a testing method for axial impact resistance of a roadway anchor rod.
Background
Anchor rod reinforcement is the most common and important support means for deep mine anchoring at present. A large number of tests and field engineering show that the anchor rod reinforcement plays an effective protection role on the roadway, the mechanical property of surrounding rock and rock mass of the anchor rod support is obviously improved, the stress distribution of the rock mass is optimized, the bearing capacity of the surrounding rock of the roadway is enhanced, the deformation of the mine roadway is obviously reduced, and the safety of the mine is obviously improved. Rock burst is a common dynamic phenomenon in coal mine production, and often causes rapid deformation and damage of a roadway, casualties and even damage of a ground building. How to ensure that the instability and damage of the roadway cannot occur under the condition of large deformation when the rock burst phenomenon occurs is one of important directions of research of domestic and foreign experts and scholars. As the most important and effective support method of the underground roadway, the anchor rod is increasingly paid more attention and researched on the impact and damage state of the rock burst and the impact load resistance of the anchor rod.
At present, most of the detection of the impact load influence of the anchor rod is a test for directly impacting the anchor rod body, or a laboratory method is utilized to carry out a simulation test on the site to test the limit impact load of the anchor rod body. Taking the invention patent 201210093451.5 as an example, the invention patent mainly aims at the anchor rod and the tray to carry out direct impact test, and under the condition of a mine roadway site, the anchor rod body is often damaged, and the anchoring state of the anchor rod and the rock body is also determined; taking the invention patent 201110387388.1 as an example, considering the impact and other influences on the anchor rod caused by the combined action of dynamic and static loads, the invention only acts on the rod body of the anchor rod, and still does not consider the interaction between the anchor rod and the rock body; the invention patent 201520987499.X is taken as an example, the influence degree of an anchor rod and a supporting rock mass under the impact action is considered, but a small-sized similar simulation test has a certain difference from the actual situation on site, the test process does not include a data acquisition link, the impact effect cannot be quantitatively analyzed, and only the state of an anchoring body after impact can be observed.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art, and provides the roadway anchor rod axial impact resistance in-situ testing device and the testing method which have the advantages of good flexibility, adaptability to various anchor rod arrangement conditions, convenience in impact energy regulation and control and easiness in result analysis.
The technical problem of the invention is mainly solved by the following technical scheme:
the invention provides an in-situ testing device for axial impact resistance of a roadway anchor rod, wherein the anchor rod is arranged in surrounding rock of a roadway in a penetrating manner, the anchor rod is provided with an overhanging end, the overhanging end penetrates out of the surrounding rock of the roadway, and the testing device comprises:
the left side and the right side of the lower surface of the pressure-bearing beam are respectively provided with a support upright post, and the bottom of each support upright post is provided with a base;
the energy impact unit comprises a lifting connection mechanism and an impact weight, one end of the lifting connection mechanism is connected with the center of the lower surface of the pressure-bearing beam, the other end of the lifting connection mechanism is connected with the impact weight, and the lifting connection mechanism is used for lifting the impact weight to a set height and then releasing the impact weight to form impact energy;
the energy conduction unit is respectively connected with the energy impact unit and the overhanging end of the anchor rod and is used for conducting impact energy generated by the energy impact unit to the overhanging end of the anchor rod so as to enable the overhanging end of the anchor rod to be impacted in the axial direction;
and the data monitoring unit is used for monitoring the impact resistance data of the anchor rod.
Further, promote coupling mechanism and include manual hoist, self-discharging lifting hook and first wire rope, the upper portion of manual hoist with the lower surface central point of pressure-bearing crossbeam puts and is connected, the lower part of manual hoist with the self-discharging lifting hook is connected, the self-discharging lifting hook with but the self-discharging formula of first wire rope's one end is connected, first wire rope's the other end with the impact heavy object is connected.
Further, the impact weight comprises a supporting plate, a middle straight rod and a plurality of weight plates, lifting lugs are arranged on two sides of the supporting plate, the middle straight rod is vertically arranged at the center of the upper surface of the supporting plate, the weight plates are sequentially stacked and then penetrate through the middle straight rod, the top of the middle straight rod is higher than the weight plate on the uppermost layer, and the top of the middle straight rod is connected with the other end of the first steel wire rope.
Further, the energy conducting unit comprises:
the sliding block is connected to the supporting upright in a sliding mode and can be locked on the supporting upright through screws;
the pulley lever is horizontally arranged and close to one side of the anchor rod, and the left side and the right side of the pulley lever are respectively connected with the sliding block;
the special-shaped fixed pulley is rotatably arranged in the middle of the pulley lever; first to third protruding ends are arranged on the outer circumferential surface of the special-shaped fixed pulley at intervals;
one end of the second steel wire rope is fixedly connected with the first protruding end, and the other end of the second steel wire rope is connected with the extending end of the anchor rod through the data monitoring and processing unit; and the axis of the second steel wire rope is collinear with the axis of the anchor rod;
one end of the third steel wire rope is fixedly connected with the second protruding end, and the other end of the third steel wire rope is connected with an adjusting heavy object;
and one end of the fourth steel wire rope is connected with the cantilevers on the two sides of the third protruding end, and the other end of the fourth steel wire rope is connected with the lifting lug.
Furthermore, the data monitoring and processing unit comprises a sensor integration box, one end of the sensor integration box is provided with a threaded hole, the threaded hole is in threaded connection with the extending end of the anchor rod, the other end of the sensor integration box is provided with a connecting block, the connecting block is connected with the other end of the second steel wire rope, and a sensor output port is further formed in the sensor integration box.
Furthermore, a cushion pad is arranged below the impact weight, the cushion pad is placed on the ground, and the base is provided with a lengthening plate in the direction perpendicular to the pressure-bearing beam.
The invention provides a testing method of an in-situ testing device for axial impact resistance of a roadway anchor rod, which comprises the following steps:
s1, adjusting the height and angle of the energy conduction unit according to the height and inclination angle of the anchor rod to be measured, so that the height and angle of the energy conduction unit are matched with the height and inclination angle of the anchor rod to be measured;
s2, lifting the impact weight to a set height by a lifting connecting mechanism of the energy impact unit, and releasing to form impact energy;
s3, the energy conduction unit conducts impact energy generated by the energy impact unit to the outward extending end of the anchor rod, so that the outward extending end of the anchor rod is subjected to impact force in the axial direction;
and S4, monitoring the impact resistance data of the anchor rod by the data monitoring and processing unit.
Further, the step S1 includes:
s11, opening screws on the sliding block according to the height and the inclination angle of the anchor rod to be measured, and enabling the sliding block to be adjusted in height up and down along the supporting upright posts;
s12, adjusting the angle of the second steel wire rope to be consistent with the angle of the anchor rod to be detected, tightening the screw on the sliding block, and locking the sliding block on the supporting upright post;
and S13, connecting the adjusting weight with a second protruding end on the special-shaped fixed pulley through a third steel wire rope to tension the second steel wire rope.
Further, the step S2 includes:
s21, connecting the impact weight with a self-discharging lifting hook through a first steel wire rope, and connecting the impact weight with a third protruding end cantilever of the special-shaped fixed pulley through a fourth steel wire rope;
and S22, lifting the impact weight to a set height by using the chain block, confirming the safety of the field environment, and releasing the impact weight by using the self-discharging lifting hook to generate impact energy.
Further, the step S4 includes: and monitoring the impact energy parameter by using a sensor integration box of the data monitoring and processing unit, and acquiring and processing data.
The invention has the beneficial effects that: lifting the impact weight to a set height through a lifting connecting mechanism of the energy impact unit and then releasing to form impact energy; then, the energy conduction unit conducts impact energy generated by the energy impact unit to the outward extending end of the anchor rod, so that the outward extending end of the anchor rod is subjected to impact force in the axial direction; finally, the data monitoring unit monitors the impact resistance data of the anchor rod, so that the in-situ test of the impact resistance of the anchor rod is realized, and real field data is obtained; meanwhile, the impact weight can provide enough impact energy to impact the anchor rod after being adjusted, the anchor rod can adapt to various anchor rod arrangement conditions, the impact energy is convenient to adjust and control, and the result is easy to analyze.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a working state diagram of the roadway anchor rod axial impact resistance in-situ testing device of the invention;
FIG. 2 is a schematic structural diagram of the roadway anchor rod axial impact resistance in-situ testing device of the invention;
FIG. 3 is a schematic structural diagram of a special-shaped fixed pulley of the roadway anchor rod axial impact resistance in-situ testing device;
FIG. 4 is a schematic structural diagram of an impact weight of the in-situ testing device for axial impact resistance of a roadway anchor rod of the invention;
FIG. 5 is a schematic structural diagram of a sensor integrated box of the roadway anchor rod axial impact resistance in-situ testing device;
fig. 6 is a method flow chart of a testing method of the roadway anchor rod axial impact resistance in-situ testing device.
In the figure:
1-anchor rod;
2-a pressure-bearing beam;
3-supporting the upright column;
4-a base;
5-energy impact unit, 51-impact weight, 511-supporting plate, 512-middle straight rod, 513-weight plate, 514-lifting lug, 52-manual lifting block, 53-self-discharging lifting hook and 54-first steel wire rope;
6-energy conducting unit, 61-sliding block, 62-pulley rod, 63-special-shaped fixed pulley, 631-first protruding end, 632-second protruding end, 633-third protruding end, 64-second steel wire rope, 65-third steel wire rope, 66-fourth steel wire rope, 67-adjusting weight;
7-data monitoring unit, 71-sensor integrated box, 72-threaded hole, 73-connecting block, 74-sensor output port;
8-a buffer pad;
9-lengthening plate.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
Referring to fig. 1-4, in the in-situ testing device for axial impact resistance of a roadway anchor rod, the anchor rod 1 is arranged in surrounding rock of a roadway in a penetrating manner, the anchor rod 1 is provided with an extending end, the extending end penetrates out of the surrounding rock of the roadway, and the testing device comprises:
the left side and the right side of the lower surface of the pressure-bearing beam 2 are respectively provided with a support upright 3, and the bottom of the support upright 3 is provided with a base 4;
the energy impact unit 5 comprises a lifting connection mechanism and an impact weight 51, one end of the lifting connection mechanism is connected with the center of the lower surface of the pressure-bearing beam 2, the other end of the lifting connection mechanism is connected with the impact weight 51, and the lifting connection mechanism is used for lifting the impact weight 51 to a set height and then releasing the impact energy;
the energy conduction unit 6 is respectively connected with the energy impact unit 5 and the overhanging end of the anchor rod 1, and the energy conduction unit 6 is used for conducting impact energy generated by the energy impact unit 5 to the overhanging end of the anchor rod 1 so as to enable the overhanging end of the anchor rod 1 to be impacted in the axial direction;
and the data monitoring unit 7 is used for monitoring the impact resistance data of the anchor rod 1.
The impact weight 51 is lifted to a set height by the lifting connecting mechanism of the energy impact unit 5 and then released to form impact energy; then, the energy conduction unit 6 conducts impact energy generated by the energy impact unit 5 to the overhanging end of the anchor rod 1, so that the overhanging end of the anchor rod 1 is subjected to impact force in the axial direction; finally, the data monitoring unit 7 monitors the impact resistance data of the anchor rod 1, so that the impact resistance of the anchor rod 1 is tested in situ, and real field data is obtained; meanwhile, the impact weight 51 can provide enough impact energy to impact the anchor rod 1 after being adjusted, can adapt to various anchor rod 1 arrangement conditions, is convenient to adjust and control the impact energy, and is easy to analyze results.
Specifically, the hoisting connection mechanism of the invention comprises a manual hoisting block 52, a self-discharging hook 53 and a first steel wire rope 54, wherein the upper part of the manual hoisting block 52 is connected with the center position of the lower surface of the pressure-bearing cross beam 2, the lower part of the manual hoisting block 52 is connected with the self-discharging hook 53, the self-discharging hook 53 is connected with one end of the first steel wire rope 54 in a self-discharging manner, and the other end of the first steel wire rope 54 is connected with the impact weight 51.
In the invention, the impact weight 51 can be made of metal with higher density, and is designed to be disassembled and assembled, the weight 12 is connected with the self-discharging hook 53 by using the first steel wire rope 54, and the self-lifting and releasing process of the impact weight 51 can be completed by the self-discharging hook 53, so that the impact energy can be obtained.
Specifically, the impact weight 51 of the present invention includes a support plate 511, a middle straight bar 512, and a plurality of weight plates 513, wherein lifting lugs 514 are disposed on two sides of the support plate 511, the middle straight bar 512 is vertically disposed at the center of the upper surface of the support plate 511, the plurality of weight plates 513 are sequentially stacked and then inserted into the middle straight bar 512, wherein the top of the middle straight bar 512 is higher than the top weight plate 513, and the top of the middle straight bar 512 is connected to the other end of the first wire rope 54. The impact weight 51 designed by the invention is formed by overlapping a plurality of layers of weight plates 513 with holes in the middle, and different impact weights are formed by changing the overlapping number of the weight plates 513, thereby conveniently adjusting the impact energy. In this embodiment, the middle straight rod 512 is mainly used to limit the position of the weight plate 513 and is connected to the self-discharging hook 53.
The energy conducting unit 6 of the present invention includes:
the sliding block 61 is connected to the supporting upright post 3 in a sliding manner, and the sliding block 61 can be locked on the supporting upright post 3 through screws;
the pulley lever 62 is horizontally arranged and close to one side of the anchor rod 1, and the left side and the right side of the pulley lever 62 are respectively connected with the sliding block 61;
the special-shaped fixed pulley 63 is rotatably arranged in the middle of the pulley rod 62; first to third protruding ends (631 and 633) are arranged on the outer circumferential surface of the special-shaped fixed pulley 63 at intervals;
one end of the second steel wire rope 64 is fixedly connected with the first protruding end 631, and the other end of the second steel wire rope 64 is connected with the protruding end of the anchor rod 1 through the data monitoring and processing unit 7; and the axis of the second wire rope 64 is collinear with the axis of the anchor rod 1;
one end of the third steel wire rope 65 is fixedly connected with the second protruding end 632, and the other end of the third steel wire rope 65 is connected with the adjusting heavy object 67;
one end of a fourth wire rope 66 is connected to the cantilevers at the two sides of the third protruding end 633, and the other end of the fourth wire rope 66 is connected to the lifting lug 514.
In the invention, the height position of the pulley lever 62 on the support upright 3 is adjusted through the sliding block 61, and the position locking is realized through the tightness of the screw. The pulley lever 62 mainly provides an attachment point for the shaped fixed pulley 63. The third protruding end 633 of the special-shaped fixed pulley 63 is connected with the impact weight 51 through the fourth steel wire rope 66, so that the impact energy of the impact weight 51 is transmitted to the special-shaped fixed pulley 63, and when the impact weight 51 generates the impact energy, the special-shaped fixed pulley 63 can be driven to rotate, the first protruding end 631 is driven to rotate, and the impact energy acts on the outward extending end of the anchor rod 1. In this embodiment, the second protruding end 632 is connected to the adjusting weight 67 through the third wire rope 65, and is used for tensioning the second wire rope 64.
Referring to fig. 5, the data monitoring and processing unit 7 of the present invention includes a sensor integrated box 71, one end of the sensor integrated box 71 is provided with a threaded hole 72, the threaded hole 72 is in threaded connection with the overhanging end of the anchor rod 1, the other end of the sensor integrated box 71 is provided with a connecting block 73, the connecting block 73 is connected with the other end of the second steel wire rope 64, wherein the sensor integrated box 71 is further provided with a sensor output port 74. In the present invention, the data transmission line is connected to the sensor output port 74, and data acquisition is performed by a computer or the like. One end of the integrated sensor box 71 is connected with the anchor rod 1, the other end of the integrated sensor box is connected with the second steel wire rope 64, and the integrated sensor box is internally composed of an acceleration sensor, a speed sensor, a force sensor, a data acquisition unit, a power supply and the like, so that data change in the impact process is monitored.
In the present invention, a cushion pad 8 is provided under the impact weight 51, the cushion pad 8 is placed on the ground, and the base 4 is provided with an elongated plate 9 in a direction perpendicular to the pressure-bearing beam 2. In this embodiment, the base 4 is of an elongated design (elongated plate 9) in the horizontal direction of impact, mainly to prevent the device from toppling over, while the bottom is provided with a cushion 8 mainly for: provides cushioning for the impact weight 51, reducing the risk.
Referring to fig. 6, the testing method of the roadway anchor rod axial impact resistance in-situ testing device of the invention comprises the following steps:
s1, adjusting the height and angle of the energy conduction unit 6 according to the height and inclination angle of the anchor rod 1 to be measured, so that the height and angle of the energy conduction unit 6 are matched with the height and inclination angle of the anchor rod 1 to be measured; in this embodiment, after each part of the test apparatus is brought into the downhole test detection position, the ground needs to be processed to ensure a certain flatness, and then the apparatus main body is assembled.
S2, the lifting connection mechanism of the energy impact unit 5 lifts the impact weight 51 to a set height and then releases the impact energy to form impact energy;
s3, the energy conduction unit 6 conducts impact energy generated by the energy impact unit 5 to the overhanging end of the anchor rod 1, so that the overhanging end of the anchor rod 1 is impacted in the axial direction;
and S4, the data monitoring and processing unit 7 monitors the impact resistance data of the anchor rod 1.
Specifically, step S1 of the present invention includes:
s11, opening screws on the sliding block 61 according to the height and the inclination angle of the anchor rod 1 to be measured, and enabling the sliding block 61 to be adjusted in height up and down along the supporting upright post 3;
s12, adjusting the angle of the second steel wire rope 64 to be consistent with the angle of the anchor rod 1 to be tested, tightening the screw on the sliding block 61, and locking the sliding block 61 on the supporting upright post 3;
and S13, connecting the adjusting weight 51 with a second protruding end 632 on the special-shaped fixed pulley 63 through a third steel wire rope 65, and tensioning a second steel wire rope 64.
Specifically, step S2 of the present invention includes:
s21, connecting the impact weight 51 with a self-discharging hook 53 through a first wire rope 54, and connecting the impact weight 51 with a third protruding end 633 of the special-shaped fixed pulley 63 in a cantilever manner through a fourth wire rope 66;
and S22, lifting the impact weight 51 to a set height by using the chain block 52, confirming the safety of the field environment, and releasing the impact weight 51 by using the self-discharging hook 53 to generate impact energy.
The energy transfer method in step S3 of the present invention is: when the impact weight 51 generates impact energy, the irregular fixed pulley 63 can be driven to rotate, so as to drive the first protruding end 631 to rotate, and further apply acting force to the extending end of the anchor rod 1 through the second steel wire rope 64.
Specifically, step S4 of the present invention includes: and monitoring the impact energy parameter by using a sensor integration box of the data monitoring and processing unit 7, and acquiring and processing data. Specifically, the influence degree of the anchor rod 1 due to the impact is observed and checked, whether the extending end of the anchor rod is loosened, extends out of the distance and the like is detected, and the influence degree is evaluated according to the impact energy.
The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (10)
1. The utility model provides a tunnel stock axial shock resistance normal position testing arrangement, the stock is worn to establish in the country rock in tunnel, the stock has overhanging end, overhanging end wear out extremely the outside of tunnel country rock, its characterized in that, testing arrangement includes:
the left side and the right side of the lower surface of the pressure-bearing beam are respectively provided with a support upright post, and the bottom of each support upright post is provided with a base;
the energy impact unit comprises a lifting connection mechanism and an impact weight, one end of the lifting connection mechanism is connected with the center of the lower surface of the pressure-bearing beam, the other end of the lifting connection mechanism is connected with the impact weight, and the lifting connection mechanism is used for lifting the impact weight to a set height and then releasing the impact weight to form impact energy;
the energy conduction unit is respectively connected with the energy impact unit and the overhanging end of the anchor rod and is used for conducting impact energy generated by the energy impact unit to the overhanging end of the anchor rod so as to enable the overhanging end of the anchor rod to be impacted in the axial direction;
and the data monitoring unit is used for monitoring the impact resistance data of the anchor rod.
2. The in-situ testing device for the axial impact resistance of the roadway anchor rod according to claim 1, wherein the lifting connection mechanism comprises a manual lifting hoist, a self-discharging lifting hook and a first steel wire rope, the upper portion of the manual lifting hoist is connected with the center of the lower surface of the pressure-bearing cross beam, the lower portion of the manual lifting hoist is connected with the self-discharging lifting hook, the self-discharging lifting hook is connected with one end of the first steel wire rope in a self-discharging manner, and the other end of the first steel wire rope is connected with the impact weight.
3. The in-situ testing device for the axial impact resistance of the roadway anchor rod according to claim 2, wherein the impact weight comprises a supporting plate, a middle straight rod and a plurality of weight plates, lifting lugs are arranged on two sides of the supporting plate, the middle straight rod is vertically arranged at the center of the upper surface of the supporting plate, the weight plates are sequentially stacked and then penetrate through the middle straight rod, the top of the middle straight rod is higher than the weight plate on the uppermost layer, and the top of the middle straight rod is connected with the other end of the first steel wire rope.
4. The roadway bolt axial impact resistance in-situ test device of claim 3, wherein the energy conduction unit comprises:
the sliding block is connected to the supporting upright in a sliding mode and can be locked on the supporting upright through screws;
the pulley lever is horizontally arranged and close to one side of the anchor rod, and the left side and the right side of the pulley lever are respectively connected with the sliding block;
the special-shaped fixed pulley is rotatably arranged in the middle of the pulley lever; first to third protruding ends are arranged on the outer circumferential surface of the special-shaped fixed pulley at intervals;
one end of the second steel wire rope is fixedly connected with the first protruding end, and the other end of the second steel wire rope is connected with the extending end of the anchor rod through the data monitoring and processing unit; and the axis of the second steel wire rope is collinear with the axis of the anchor rod;
one end of the third steel wire rope is fixedly connected with the second protruding end, and the other end of the third steel wire rope is connected with an adjusting heavy object;
and one end of the fourth steel wire rope is connected with the cantilevers on the two sides of the third protruding end, and the other end of the fourth steel wire rope is connected with the lifting lug.
5. The roadway anchor rod axial impact resistance in-situ testing device according to claim 4, wherein the data monitoring and processing unit comprises a sensor integration box, one end of the sensor integration box is provided with a threaded hole, the threaded hole is in threaded connection with the extending end of the anchor rod, the other end of the sensor integration box is provided with a connecting block, the connecting block is connected with the other end of the second steel wire rope, and a sensor output port is further formed in the sensor integration box.
6. The in-situ testing device for the axial impact resistance of the roadway anchor rod as claimed in claim 1, wherein a cushion pad is arranged below the impact weight, the cushion pad is placed on the ground, and the base is provided with an elongated plate in a direction perpendicular to the pressure-bearing cross beam.
7. A testing method using the roadway bolt axial impact resistance in-situ testing device according to any one of claims 1 to 6, is characterized by comprising the following steps of:
s1, adjusting the height and angle of the energy conduction unit according to the height and inclination angle of the anchor rod to be measured, so that the height and angle of the energy conduction unit are matched with the height and inclination angle of the anchor rod to be measured;
s2, lifting the impact weight to a set height by a lifting connecting mechanism of the energy impact unit, and releasing to form impact energy;
s3, the energy conduction unit conducts impact energy generated by the energy impact unit to the outward extending end of the anchor rod, so that the outward extending end of the anchor rod is subjected to impact force in the axial direction;
and S4, monitoring the impact resistance data of the anchor rod by the data monitoring and processing unit.
8. The testing method of the in-situ testing device for the axial impact resistance of the roadway bolt according to claim 7, wherein the step S1 includes:
s11, opening screws on the sliding block according to the height and the inclination angle of the anchor rod to be measured, and enabling the sliding block to be adjusted in height up and down along the supporting upright posts;
s12, adjusting the angle of the second steel wire rope to be consistent with the angle of the anchor rod to be detected, tightening the screw on the sliding block, and locking the sliding block on the supporting upright post;
and S13, connecting the adjusting weight with a second protruding end on the special-shaped fixed pulley through a third steel wire rope to tension the second steel wire rope.
9. The testing method of the in-situ testing device for the axial impact resistance of the roadway bolt according to claim 7, wherein the step S2 includes:
s21, connecting the impact weight with a self-discharging lifting hook through a first steel wire rope, and connecting the impact weight with a third protruding end cantilever of the special-shaped fixed pulley through a fourth steel wire rope;
and S22, lifting the impact weight to a set height by using the chain block, confirming the safety of the field environment, and releasing the impact weight by using the self-discharging lifting hook to generate impact energy.
10. The testing method of the in-situ testing device for the axial impact resistance of the roadway bolt according to claim 7, wherein the step S4 includes: and monitoring the impact energy parameter by using a sensor integration box of the data monitoring and processing unit, and acquiring and processing data.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112525733A (en) * | 2020-11-18 | 2021-03-19 | 中煤科工开采研究院有限公司 | Anchor rod impact strength in-situ testing device and testing method |
| CN112798212A (en) * | 2021-02-03 | 2021-05-14 | 中煤科工开采研究院有限公司 | Anchor rod axial impact test bed and test method |
| CN112880958A (en) * | 2021-02-03 | 2021-06-01 | 中煤科工开采研究院有限公司 | Anchoring body axial shock resistance testing method and test bed |
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2020
- 2020-02-10 CN CN202010084020.7A patent/CN111189603A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525733A (en) * | 2020-11-18 | 2021-03-19 | 中煤科工开采研究院有限公司 | Anchor rod impact strength in-situ testing device and testing method |
| CN112798212A (en) * | 2021-02-03 | 2021-05-14 | 中煤科工开采研究院有限公司 | Anchor rod axial impact test bed and test method |
| CN112880958A (en) * | 2021-02-03 | 2021-06-01 | 中煤科工开采研究院有限公司 | Anchoring body axial shock resistance testing method and test bed |
| CN112880958B (en) * | 2021-02-03 | 2022-06-17 | 中煤科工开采研究院有限公司 | Anchoring body axial shock resistance testing method and test bed |
| CN112798212B (en) * | 2021-02-03 | 2022-06-17 | 中煤科工开采研究院有限公司 | Anchor rod axial impact test bed and test method |
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