CN114739892A - Anchor rod or anchor cable impact test device in corrosive environment and operation method thereof - Google Patents
Anchor rod or anchor cable impact test device in corrosive environment and operation method thereof Download PDFInfo
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- CN114739892A CN114739892A CN202210244558.9A CN202210244558A CN114739892A CN 114739892 A CN114739892 A CN 114739892A CN 202210244558 A CN202210244558 A CN 202210244558A CN 114739892 A CN114739892 A CN 114739892A
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- 238000009863 impact test Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 13
- 238000012360 testing method Methods 0.000 claims abstract description 153
- 238000004873 anchoring Methods 0.000 claims abstract description 95
- 238000005260 corrosion Methods 0.000 claims abstract description 88
- 230000007797 corrosion Effects 0.000 claims abstract description 88
- 239000011435 rock Substances 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 51
- 230000007935 neutral effect Effects 0.000 claims abstract description 45
- 239000003245 coal Substances 0.000 claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 239000002253 acid Substances 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 114
- 239000010959 steel Substances 0.000 claims description 114
- 239000007788 liquid Substances 0.000 claims description 63
- 239000000243 solution Substances 0.000 claims description 23
- 230000002378 acidificating effect Effects 0.000 claims description 21
- 238000005553 drilling Methods 0.000 claims description 18
- 239000012670 alkaline solution Substances 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 10
- 239000003929 acidic solution Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 230000001808 coupling effect Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 abstract description 2
- 230000008093 supporting effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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Abstract
The utility model provides an anchor rod or anchor rope impact test device under corrosive environment, including the corrosion test case, anchor test bench and impact move and carry application mechanism, the fixed coal rock material test stand that is provided with on the interior bottom surface of corrosion test case, the fixed neutral atomizer that is provided with on the interior top surface of corrosion test case, acid atomizer and alkaline atomizer, the interior left surface of corrosion test case is provided with humidity transducer and temperature sensor, impact and move and carry application mechanism and pass through the bottom of anchor subassembly fixed mounting at the anchor test bench, the fixed numerical control operation panel that is provided with in top right side portion of anchor test bench, the numerical control operation panel respectively with neutral atomizer, acid atomizer, alkaline atomizer, U type thermostat, humidity transducer and temperature sensor signal connection. The invention has scientific design and can simulate and explore the anchoring force attenuation law and the stress distribution law of the anchor rod or the anchor cable support body under different corrosion environments and the impact dynamic load coupling action under the condition of a laboratory.
Description
Technical Field
The invention relates to the field of coal mine roadway rock burst experiments, in particular to an anchor rod or anchor cable impact test device in a corrosive environment and an operation method thereof.
Background
At present, anchor rod and anchor cable support becomes a main support mode of coal mine tunnels, and is widely popularized and applied in coal mine tunnels in China. The anchor rod and the anchor cable are anchored in a stable coal rock body in support, and deformation and slippage and dislocation of surrounding rocks of the roadway are controlled. The method has the advantages that the attenuation law of anchoring force in the process of supporting the anchor rod and the anchor cable under different external conditions is researched, and the method has important significance for effectively improving the reliability of the supporting performance of the anchor rod and the anchor cable and ensuring the safety of mine engineering.
For the coal mine underground tunnel which generally adopts the anchor rod and anchor cable support mode at present, the strength of the anchor rod and anchor cable support and the durability of high anchoring force are very important, in the support process, the working characteristics of the anchor rod and anchor cable are certainly influenced by the underground environment, for example, under the action of acidic, neutral and alkaline corrosive media, the anchor rod, anchor cable and anchor body are easily corroded to cause the attenuation of the anchoring force, after the coal mine is exploited to enter deep part exploitation, the ground stress is obviously increased, the mine pressure is seriously developed, the tunnel surrounding rock generates macroscopic deformation expansion, the rib, part of coal blocks are projected, the impact danger is enhanced, therefore, the anchor rod and anchor cable support is easily under the condition of the coupling effect of the corrosive media and dynamic impact, the durability and the anchoring performance of the anchoring force are seriously reduced, and the potential safety hazard is increased. Therefore, the study on the performance rule that the anchoring force of the anchor rod and the anchor cable resists impact under different corrosion environments and different corrosion degrees has important significance for ensuring the supporting strength of the anchor rod and the anchor cable and improving the supporting effect.
Disclosure of Invention
The invention aims to provide an anchor rod or anchor cable impact test device in a corrosive environment and an operation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
an anchor rod or anchor cable impact test device under a corrosive environment comprises a corrosion test box, an anchoring test bed and an impact dynamic load applying mechanism, wherein the corrosion test box is fixedly arranged at the top of the anchoring test bed, the anchoring test bed is fixedly supported on the ground through a support frame, the front side of the corrosion test box is provided with a glass insulated door, the corrosion test box and the glass insulated door are both made of corrosion-resistant insulating materials, a coal rock material test frame is fixedly arranged on the inner bottom surface of the corrosion test box, a coal rock material sample is fixedly arranged on the coal rock material test frame, neutral atomizers, an acid atomizer and an alkaline atomizer which spray downwards are fixedly arranged on the inner top surface of the corrosion test box at left and right intervals, a plurality of U-shaped temperature controllers which are arranged at upper and lower intervals are uniformly and fixedly arranged on the inner back surface of the corrosion test box, and the inner left surface of the corrosion test box is provided with a humidity sensor and a temperature sensor, the top of the corrosion test box is fixedly provided with a solution box, a neutral liquid containing groove, an acidic liquid containing groove and an alkaline liquid containing groove are arranged at the left side and the right side of the inside of the solution box at intervals, the liquid outlet of the neutral liquid containing groove is connected with the liquid inlet of a neutral atomizer, the liquid outlet of the acidic liquid containing groove is connected with the liquid inlet of the acidic atomizer, the liquid outlet of the alkaline liquid containing groove is connected with the liquid inlet of the alkaline atomizer, a bottom plate of the corrosion test box and an anchoring test bed are both provided with six first circular through holes, the six first circular through holes on the bottom plate of the corrosion test box and the six first circular through holes on the anchoring test bed respectively correspond up and down one by one, an impact dynamic load applying mechanism is fixedly arranged at the bottom of the anchoring test bed through an anchoring assembly, the upper part of the anchoring assembly upwards passes through a certain two first circular through holes corresponding up and down to extend into the corrosion test box and is anchored at the bottom of a coal rock material sample, the right side part of the top of the anchoring test bed is fixedly provided with a numerical control operation table positioned on the right side of the corrosion test box, and the numerical control operation table is in signal connection with the neutral atomizer, the acid atomizer, the alkaline atomizer, the U-shaped temperature controller, the humidity sensor and the temperature sensor through the internal integrated cable.
The support frame includes square gantry frame, the upper surface at square gantry frame is welded and fixed to the lower surface four sides reason of anchor test bench, square gantry frame is formed by four shaped steel welding, square gantry frame's bottom four corners department has all welded vertical landing leg, the bottom of vertical landing leg is fixed subaerial through rag bolt, four side borders of upper surface of anchor test bench are all fixed to be provided with and enclose at the outside safety protective guard all around of corrosion test case, safety protective guard's front side portion is provided with two protection bars door that run from opposite directions and be located the corrosion test case dead ahead.
Coal petrography body material test rack includes square frame base, left side division bars steel sheet, right side division bars steel sheet and back division bars steel sheet, square frame base level sets up, rectangular vertical extension board has all been welded at the lower surface left side edge and the right side edge of square frame base, the lower side welding of rectangular vertical extension board is at the bottom plate upper surface of corrosion test case, left side division bars steel sheet and right side division bars steel sheet are all along the vertical setting of fore-and-aft direction, back division bars steel sheet is along the vertical setting of left right direction, the integrative welding fixed connection in the upper surface left side edge of square frame base of lower side of left side division bars steel sheet, the integrative welding fixed connection in the upper surface right side edge of square frame base of lower side of right side division bars steel sheet, the integrative welding fixed connection in the upper surface rear side edge of square frame base of lower side of back division bars steel sheet, the back side of left side division bars steel sheet and the left side edge of back division bars steel sheet and the back side of right side division bars steel sheet and the equal integrative welding fixed connection in the right side of back division bars steel sheet are opened And (4) fixing connection.
The impact dynamic load applying mechanism comprises an impact hammer and an impact frame, the impact frame is vertically arranged below the anchoring test bed, the top of the impact frame is fixedly connected to the bottom of the anchoring test bed through an anchoring assembly, and the impact hammer is vertically arranged on the impact frame in a sliding mode.
The impact hammer comprises a cylindrical steel ingot and a first square steel plate, the cylindrical steel ingot is vertically arranged, the first square steel plate is horizontally arranged, the top of the cylindrical steel ingot is fixedly connected to the middle of the lower surface of the first square steel plate in a welding mode, and an upper and lower through-hole is formed in the four corners of the first square steel plate.
The impact frame comprises two second square steel plates and four high-strength round steels, the two second square steel plates are horizontally arranged and are arranged correspondingly at intervals up and down, the four high-strength round steels are vertically arranged and are arranged between the two second square steel plates in a rectangular array, the lower ends of the four high-strength round steels are respectively welded at the four corners of the upper surface of the second square steel plate at the lower side, the upper ends of the four high-strength round steels are respectively welded at the four corners of the lower surface of the second square steel plate at the upper side, the four high-strength round steels respectively correspondingly penetrate through the four second circular through holes, the high-strength round steels are connected with the second circular through holes in a sliding manner, a third circular through hole which is through up and down is formed in the middle of the second square steel plate at the upper side, the third circular through hole is the same as the inner diameter of the first circular through hole and is arranged correspondingly up and down with one first circular through hole corresponding to the anchoring test bed;
the anchoring assembly comprises an anchor rod or an anchor cable, a butterfly-shaped tray and a nut, the upper end of the anchor rod or the anchor cable upwards penetrates through a certain two first circular through holes which vertically correspond to each other and extends into the corrosion test box and is anchored at the bottom of the coal-rock material sample, the lower end of the anchor rod or the anchor cable downwards penetrates through a third circular through hole, the butterfly-shaped tray is sleeved at the lower end of the anchor rod or the anchor cable and is in close contact with the lower surface of the second square steel plate on the upper side, and the nut is sleeved at the lower end of the anchor rod or the anchor cable in a threaded manner and is in close contact with the lower portion of the butterfly-shaped tray.
An operation method of an anchor rod or anchor cable impact test device in a corrosive environment specifically comprises the following steps:
(1) and a fixed test device is installed: fixing a support frame on a hard ground by using foundation bolts according to a basic diagram, keeping an anchoring test bed horizontal, and then fixedly installing a corrosion test box on the anchoring test bed and debugging the corrosion test box;
(2) cutting according to the size of the coal-rock material test rack to manufacture a coal-rock material sample, and placing the coal-rock material sample into the coal-rock material test rack for fixing;
(3) drilling an anchoring hole at the bottom of the coal rock material sample: starting an anchor rod drilling machine, enabling a drill rod to vertically and upwards sequentially penetrate through a certain two first circular through holes which vertically correspond to each other, extending into a corrosion test box, enabling the upper end of an anchor rod to upwards drill at the bottom of a coal-rock body material sample to a depth required by a test, stopping drilling, and dismounting the drill rod to obtain an anchoring hole required by the test;
(4) fixedly mounting an anchor rod or an anchor cable in the anchoring hole;
(5) connecting the impact dynamic load applying mechanism with the anchor rod or the anchor cable and fixedly installing the impact dynamic load applying mechanism at the bottom of the anchoring test bed;
(6) respectively injecting prepared neutral solution, acid solution and alkaline solution into the neutral liquid containing groove, the acid liquid containing groove and the alkaline liquid containing groove, and starting a corrosion test;
(7) and when the corrosion test is carried out for 30 days, 60 days and 90 days respectively, the dynamic impact test of the heavy hammer with different strong degrees is started, the impact hammer moves upwards to different positions and heights and then freely falls, the impact hammer falls from top to bottom to impact the second square steel plate on the lower side, so that the anchor rod or the anchor cable is impacted and drawn, and the performance rule that the anchoring force of the anchor rod or the anchor cable resists impact in different corrosion environments and different corrosion degrees can be explored through the drawing test of the anchor rod or the anchor cable.
The step (4) is specifically as follows: and (3) placing the resin anchoring agent cartridge at the bottom of the anchoring hole drilled in the step (3), inserting the lower end of the anchor rod or the anchor cable into a drill bit of an anchor rod drilling machine for fixing, penetrating the upper end of the anchor rod or the anchor cable through two first circular through holes corresponding to the anchoring hole and extending into the anchoring hole, enabling the upper end of the anchor rod or the anchor cable to be in contact with the resin anchoring agent cartridge, starting the anchor rod drilling machine, driving the anchor rod or the anchor cable to rotate by the anchor rod drilling machine, and enabling the anchor rod or the anchor cable to stir the resin anchoring agent cartridge to be fixed in the anchoring hole to finish anchoring.
The step (5) is specifically as follows: and correspondingly sleeving the third circular through hole on the second square steel plate on the upper side at the lower end of the anchor rod or the anchor cable, enabling the upper surface of the second square steel plate on the upper side to be in close contact with the lower surface of the anchoring test bed, sleeving the butterfly-shaped tray at the lower end of the anchor rod or the anchor cable and being in close contact with the lower surface of the second square steel plate on the upper side, and sleeving the nut at the lower end of the anchor rod or the anchor cable and pre-tightening the nut.
The step (6) is specifically as follows: sealing a gap between the anchor rod or the anchor cable and the two first circular through holes which are penetrated through the anchor rod or the anchor cable, then respectively injecting prepared neutral solution, acid solution and alkaline solution into the neutral liquid containing groove, the acid liquid containing groove and the alkaline liquid containing groove, a humidity sensor and a temperature sensor are turned on through a numerical control console, a certain U-shaped temperature controller is selectively turned on, meanwhile, selectively opening the neutral atomizer, the acidic atomizer and the alkaline atomizer, spraying the neutral solution in the neutral liquid containing groove downwards onto the upper part of the coal-rock mass material sample through the neutral atomizer, spraying the acidic solution in the acidic liquid containing groove downwards onto the upper part of the coal-rock mass material sample through the acidic atomizer, spraying the alkaline solution in the alkaline liquid containing groove downwards onto the upper part of the coal-rock mass material sample through the alkaline atomizer, so that the coal rock mass material sample is subjected to corrosion test under the action of neutral solution, acidic solution or alkaline solution.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly has the following beneficial effects:
(1) the stress corrosion mechanism and the anchoring force attenuation rule of the anchor rod or anchor cable support system in different corrosion environments can be researched under the laboratory condition;
(2) the method can truly simulate the underground field conditions of the coal mine under the laboratory conditions, is easy to operate and realize, and has higher reliability, operability and convenience compared with field tests;
(3) the invention can comprehensively explore the anchoring force bearing and attenuation rules of the anchor rod or anchor cable support system under different corrosion environments and the impact energy release coupling action under the laboratory condition.
The invention has scientific design and can simulate and explore the anchoring force attenuation law and the stress distribution law of the anchor rod or the anchor cable support body under different corrosion environments and the impact dynamic load coupling action under the condition of a laboratory.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of a corrosion test chamber and its internal structure according to the present invention.
Fig. 3 is a schematic structural view of the impact dynamic load applying mechanism of the present invention.
Fig. 4 is a partially enlarged view of a portion a in fig. 1.
Detailed Description
The embodiments of the present invention are further described below with reference to the drawings.
As shown in fig. 1-4, an anchor rod or anchor cable impact test device under a corrosive environment comprises a corrosion test box 1, an anchoring test bed 2 and an impact dynamic load applying mechanism, wherein the corrosion test box 1 is fixedly installed at the top of the anchoring test bed 2, the anchoring test bed 2 is fixedly supported on the ground through a support frame, a glass insulated door 3 is arranged at the front side of the corrosion test box 1, the corrosion test box 1 and the glass insulated door 3 are both made of corrosion-resistant insulating materials, a coal rock material test frame is fixedly arranged on the inner bottom surface of the corrosion test box 1, a coal rock material sample 4 is fixedly arranged on the coal rock material test frame, downward-spraying neutral atomizers 5, acid atomizers 6 and alkaline atomizers 7 are fixedly arranged on the inner top surface of the corrosion test box 1 at left and right intervals, a plurality of U-shaped temperature controllers 8 which are arranged at intervals up and down are uniformly and fixedly arranged on the inner back surface of the corrosion test box 1, the inner left side of the corrosion test box 1 is provided with a humidity sensor 9 and a temperature sensor 10, the top of the corrosion test box 1 is fixedly provided with a solution box 11, a neutral liquid containing groove, an acidic liquid containing groove and an alkaline liquid containing groove are arranged at intervals on the left and right inside the solution box 11, the liquid outlet of the neutral liquid containing groove is connected with the liquid inlet of the neutral atomizer 5, the liquid outlet of the acidic liquid containing groove is connected with the liquid inlet of the acidic atomizer 6, the liquid outlet of the alkaline liquid containing groove is connected with the liquid inlet of the alkaline atomizer 7, six first circular through holes 12 are respectively arranged on the bottom plate of the corrosion test box 1 and the anchoring test bed 2, the six first circular through holes 12 on the bottom plate of the corrosion test box 1 and the six first circular through holes 12 on the anchoring test bed 2 respectively correspond up and down one by one, the impact dynamic load applying mechanism is fixedly arranged at the bottom of the anchoring test bed 2 through an anchoring assembly, the upper portion of anchor subassembly upwards passes the first circular through-hole 12 that two about correspond and stretches into in corrosion test case 1 and anchor in the bottom of coal petrography body material sample 4, and the fixed numerical control operation platform 13 that is located corrosion test case 1 right side that is provided with in top right side portion of anchor test bench 2, numerical control operation platform 13 through inside integrated cable respectively with neutral atomizer 5, acid atomizer 6, alkaline atomizer 7, U type thermostat 8, humidity transducer 9 and temperature sensor 10 signal connection.
The support frame includes square gantry frame 14, the lower surface four sides border welded fastening of anchor test bench 2 is at the upper surface of square gantry frame 14, square gantry frame 14 is formed by four shaped steel welding, square gantry frame 14's bottom four corners department all welds vertical landing leg 15, rag bolt is fixed subaerial in the bottom of vertical landing leg 15, four sides borders of the upper surface of anchor test bench 2 are all fixed to be provided with and enclose at corrosion test 1 outside safety protective fence 16 all around, safety fence 16's preceding lateral part is provided with two protection bars door 17 that run from opposite directions and be located corrosion test 1 dead ahead. The U-shaped temperature controller 8 is an electric heating rod and is in a conventional technology.
The coal rock material test frame comprises a square frame base 18, a left grid steel plate 19, a right grid steel plate 20 and a rear grid steel plate, wherein the square frame base 18 is horizontally arranged, strip-shaped vertical support plates 21 are welded at the left side edge and the right side edge of the lower surface of the square frame base 18, the lower side edges of the strip-shaped vertical support plates 21 are welded on the upper surface of a bottom plate of the corrosion test box 1, the left grid steel plate 19 and the right grid steel plate 20 are vertically arranged along the front-rear direction, the rear grid steel plate is vertically arranged along the left-right direction, the lower side edges of the left grid steel plate 19 are integrally welded and fixedly connected on the left side edge of the upper surface of the square frame base 18, the lower side edges of the right grid steel plate 20 are integrally welded and fixedly connected on the right side of the edge of the upper surface of the square frame base 18, and the lower side edges of the rear grid steel plate are integrally welded and fixedly connected on the rear side edge of the upper surface of the square frame base 18, the rear side edge of the left open grid steel plate 19 and the left side edge of the rear open grid steel plate as well as the rear side edge of the right open grid steel plate 20 and the right side edge of the rear open grid steel plate are all integrally welded and fixedly connected.
Impact dynamic load applying mechanism includes jump bit and impact frame, and the vertical setting of impact frame is in the below of anchor test bench 2, and anchor subassembly fixed connection is passed through at the bottom of anchor test bench 2 in the top of impact frame, and the vertical slip setting of jump bit is on impact frame.
The impact hammer comprises a cylindrical steel ingot 22 and a first square steel plate 23, the cylindrical steel ingot 22 is vertically arranged, the first square steel plate 23 is horizontally arranged, the top of the cylindrical steel ingot 22 is fixedly connected to the middle of the lower surface of the first square steel plate 23 in a welding mode, and a second round through hole which is vertically through is formed in the four corners of the first square steel plate 23.
The impact frame comprises two second square steel plates 24 and four high-strength round steels 25, the two second square steel plates 24 are horizontally arranged and are arranged correspondingly at intervals up and down, the four high-strength round steels 25 are vertically arranged and are arranged between the two second square steel plates 24 in a rectangular array mode, the lower ends of the four high-strength round steels 25 are respectively welded at the four corners of the upper surface of the second square steel plate 24 at the lower side, the upper ends of the four high-strength round steels 25 are respectively welded at the four corners of the lower surface of the second square steel plate 24 at the upper side, the four high-strength round steels 25 respectively correspondingly penetrate through the four second circular through holes, the high-strength round steels 25 are in sliding connection with the second circular through holes, a third circular through hole 26 which is through up and down is formed in the middle part of the second square steel plate 24 at the upper side, the third circular through hole 26 is the same as the inner diameter of the first circular through hole 12 and is arranged correspondingly to the first circular through hole 12 at one of the anchoring test bed 2 up and down;
the anchoring assembly comprises an anchor rod or an anchor cable 27, a butterfly-shaped tray 28 and a nut 29, the upper end part of the anchor rod or the anchor cable 27 upwards penetrates through a certain two first round through holes 12 which vertically correspond to each other, extends into the corrosion test chamber 1 and is anchored at the bottom of the coal rock material sample 4, the lower end part of the anchor rod or the anchor cable 27 downwards penetrates through a third round through hole 26, the butterfly-shaped tray 28 is sleeved at the lower end part of the anchor rod or the anchor cable 27 and is in tight contact with the lower surface of the second square steel plate 24 on the upper side, and the nut 29 is sleeved at the lower end part of the anchor rod or the anchor cable 27 in a threaded manner and is in tight contact with the lower part of the butterfly-shaped tray 28.
An operation method of an anchor rod or anchor cable impact test device in a corrosive environment specifically comprises the following steps:
(1) and a fixed test device is installed: fixing a support frame on a hard ground by using foundation bolts according to a basic diagram, keeping an anchoring test bed 2 horizontal, and then fixedly installing a corrosion test box 1 on the anchoring test bed 2 and debugging;
(2) cutting according to the size of the coal-rock material test rack to manufacture a coal-rock material sample 4, and placing the coal-rock material sample 4 into the coal-rock material test rack for fixing;
(3) drilling an anchoring hole at the bottom of the coal-rock mass material sample 4: starting an anchor rod drilling machine, enabling a drill rod to vertically and upwards sequentially penetrate through a certain two first circular through holes 12 which vertically correspond to each other, extending into the corrosion test box 1, enabling the upper end of an anchor rod to upwards drill at the bottom of the coal-rock body material sample 4 to the depth required by the test, stopping drilling, and dismounting the drill rod to obtain an anchoring hole required by the test;
(4) an anchor rod or an anchor cable 27 is fixedly arranged in the anchoring hole;
(5) connecting the impact dynamic load applying mechanism with an anchor rod or an anchor cable 27 and fixedly installing the impact dynamic load applying mechanism at the bottom of the anchoring test bed 2;
(6) respectively injecting prepared neutral solution, acid solution and alkaline solution into the neutral liquid containing tank, the acid liquid containing tank and the alkaline liquid containing tank, and starting a corrosion test;
(7) and when the corrosion test is respectively carried out for 30 days, 60 days and 90 days, the dynamic impact test of the heavy hammer with different strong degrees is started, the impact hammer moves upwards to different positions and heights and then freely falls, the impact hammer falls from top to bottom to impact the second square steel plate 24 on the lower side, so that the anchor rod or the anchor cable 27 is impacted and drawn, and the performance rule that the anchoring force of the anchor rod or the anchor cable 27 resists the impact in different corrosion environments and different corrosion degrees can be explored through the drawing test of the anchor rod or the anchor cable 27.
The step (4) is specifically as follows: and (3) placing the resin anchoring agent cartridge at the bottom of the anchoring hole drilled in the step (3), inserting the lower end of the anchor rod or the anchor cable 27 into a drill bit of an anchor rod drilling machine for fixing, penetrating the upper end of the anchor rod or the anchor cable 27 through the two first circular through holes 12 corresponding to the anchoring hole and extending into the anchoring hole, enabling the upper end of the anchor rod or the anchor cable 27 to be in contact with the resin anchoring agent cartridge, starting the anchor rod drilling machine, driving the anchor rod or the anchor cable 27 to rotate by the anchor rod drilling machine, stirring the resin anchoring agent cartridge by the anchor rod or the anchor cable 27, and enabling the anchor rod or the anchor cable 27 to be fixed in the anchoring hole to complete anchoring.
The step (5) is specifically as follows: the third circular through hole 26 on the second square steel plate 24 on the upper side is correspondingly sleeved at the lower end of the anchor rod or the anchor cable 27, the upper surface of the second square steel plate 24 on the upper side is in close contact with the lower surface of the anchoring test bed 2, then the butterfly-shaped tray 28 is sleeved at the lower end of the anchor rod or the anchor cable 27 and is in close contact with the lower surface of the second square steel plate 24 on the upper side, and then the nut 29 is sleeved at the lower end of the anchor rod or the anchor cable 27 and is pre-tightened.
The step (6) is specifically as follows: sealing a gap between the anchor rod or the anchor cable 27 and the two first circular through holes 12 which penetrate through the anchor rod or the anchor cable, then respectively injecting prepared neutral solution, acidic solution and alkaline solution into the neutral liquid containing groove, the acidic liquid containing groove and the alkaline liquid containing groove, opening the humidity sensor 9 and the temperature sensor 10 through the numerical control operation platform 13, selectively opening one U-shaped temperature controller 8, simultaneously selectively opening the neutral atomizer 5, the acidic atomizer 6 and the alkaline atomizer 7, spraying the neutral solution in the neutral liquid containing groove downwards onto the upper part of the coal rock material sample 4 through the neutral atomizer 5, spraying the acidic solution in the acidic liquid containing groove downwards onto the upper part of the coal rock material sample 4 through the acidic atomizer 6, and spraying the alkaline solution in the alkaline liquid containing groove downwards onto the upper part of the coal rock material sample 4 through the alkaline atomizer 7, so that the coal rock material sample 4 is subjected to the conditions that the neutral solution, the acidic solution, the alkaline solution and the alkaline solution are mixed with the alkaline solution, and the alkaline solution are sprayed downwards onto the upper part of the coal rock material sample 4 through the alkaline atomizer 7, and the coal rock material sample 4, And carrying out corrosion test under the action of an acidic solution or an alkaline solution.
The above embodiments are merely to illustrate rather than to limit the technical solutions of the present invention, and although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention any modifications and equivalents.
Claims (10)
1. The utility model provides a stock or anchor rope impact test device under corrosive environment which characterized in that: the device comprises a corrosion test box, an anchoring test bed and an impact dynamic load applying mechanism, wherein the corrosion test box is fixedly arranged at the top of the anchoring test bed, the anchoring test bed is fixedly supported on the ground through a support frame, a glass insulating door is arranged on the front side of the corrosion test box, the corrosion test box and the glass insulating door are both made of corrosion-resistant insulating materials, a coal-rock mass material test frame is fixedly arranged on the inner bottom surface of the corrosion test box, a coal-rock mass material sample is fixedly arranged on the coal-rock mass material test frame, neutral atomizers, an acid atomizer and an alkaline atomizer which spray downwards are fixedly arranged on the inner top surface of the corrosion test box at left and right intervals, a plurality of U-shaped temperature controllers which are arranged at upper and lower intervals are uniformly and fixedly arranged on the inner back surface of the corrosion test box, a humidity sensor and a temperature sensor are arranged on the inner left surface of the corrosion test box, and a solution box is fixedly arranged at the top of the corrosion test box, a neutral liquid containing groove, an acidic liquid containing groove and an alkaline liquid containing groove are arranged at the left side and the right side of the inside of the solution box at intervals, the liquid outlet of the neutral liquid containing groove is connected with the liquid inlet of the neutral atomizer, the liquid outlet of the acidic liquid containing groove is connected with the liquid inlet of the acidic atomizer, the liquid outlet of the alkaline liquid containing groove is connected with the liquid inlet of the alkaline atomizer, six first circular through holes are respectively arranged on a bottom plate of the corrosion test box and an anchoring test bed, the six first circular through holes on the bottom plate of the corrosion test box and the six first circular through holes on the anchoring test bed are respectively in one-to-one correspondence, an impact dynamic load applying mechanism is fixedly arranged at the bottom of the anchoring test bed through an anchoring assembly, the upper part of the anchoring assembly upwards penetrates through a certain two vertically corresponding first circular through holes to extend into the corrosion test box and is anchored at the bottom of a coal rock material sample, a numerical control operation table is fixedly arranged at the right side part of the top of the anchoring test bed, the numerical control operation table is respectively in signal connection with the neutral atomizer, the acid atomizer, the alkaline atomizer, the U-shaped temperature controller, the humidity sensor and the temperature sensor through internal integrated cables.
2. An impact test device for anchor rods or anchor cables in corrosive environments, according to claim 1, wherein: the support frame includes square gantry frame, the upper surface at square gantry frame is welded and fixed to the lower surface four sides reason of anchor test bench, square gantry frame is formed by four shaped steel welding, square gantry frame's bottom four corners department has all welded vertical landing leg, the bottom of vertical landing leg is fixed subaerial through rag bolt, four side borders of upper surface of anchor test bench are all fixed to be provided with and enclose at the outside safety protective guard all around of corrosion test case, safety protective guard's front side portion is provided with two protection bars door that run from opposite directions and be located the corrosion test case dead ahead.
3. An impact test device for anchor rods or anchor cables in corrosive environments, according to claim 2, wherein: coal petrography body material test rack includes square frame base, left side division bars steel sheet, right side division bars steel sheet and back division bars steel sheet, square frame base level sets up, rectangular vertical extension board has all been welded at the lower surface left side edge and the right side edge of square frame base, the lower side welding of rectangular vertical extension board is at the bottom plate upper surface of corrosion test case, left side division bars steel sheet and right side division bars steel sheet are all along the vertical setting of fore-and-aft direction, back division bars steel sheet is along the vertical setting of left right direction, the integrative welding fixed connection in the upper surface left side edge of square frame base of lower side of left side division bars steel sheet, the integrative welding fixed connection in the upper surface right side edge of square frame base of lower side of right side division bars steel sheet, the integrative welding fixed connection in the upper surface rear side edge of square frame base of lower side of back division bars steel sheet, the back side of left side division bars steel sheet and the left side edge of back division bars steel sheet and the back side of right side division bars steel sheet and the equal integrative welding fixed connection in the right side of back division bars steel sheet are opened And (4) fixing connection.
4. A rock bolt or anchor rope impact test device under corrosive environment of claim 3, characterized in that: the impact dynamic load applying mechanism comprises an impact hammer and an impact frame, the impact frame is vertically arranged below the anchoring test bed, the top of the impact frame is fixedly connected to the bottom of the anchoring test bed through an anchoring assembly, and the impact hammer is vertically arranged on the impact frame in a sliding mode.
5. The device for testing impact of the anchor rod or the anchor cable in the corrosive environment as claimed in claim 4, wherein: the impact hammer comprises a cylindrical steel ingot and a first square steel plate, the cylindrical steel ingot is vertically arranged, the first square steel plate is horizontally arranged, the top of the cylindrical steel ingot is fixedly connected to the middle of the lower surface of the first square steel plate in a welding mode, and a vertically through second circular through hole is formed in each of four corners of the first square steel plate.
6. An impact test device for anchor rods or anchor cables in corrosive environments, according to claim 5, wherein: the impact frame comprises two second square steel plates and four high-strength round steels, the two second square steel plates are horizontally arranged and are arranged at intervals in a corresponding mode from top to bottom, the four high-strength round steels are vertically arranged and are arranged between the two second square steel plates in a rectangular array mode, the lower ends of the four high-strength round steels are respectively welded to the four corners of the upper surface of the second square steel plate on the lower side, the upper ends of the four high-strength round steels are respectively welded to the four corners of the lower surface of the second square steel plate on the upper side, the four high-strength round steels respectively penetrate through the four second circular through holes in a corresponding mode, the high-strength round steels are connected with the second circular through holes in a sliding mode, a third circular through hole which is through from top to bottom is formed in the middle of the second square steel plate on the upper side, the third circular through hole is identical to the inner diameter of the first circular through hole and is arranged in a corresponding mode from top to bottom with one of the corresponding first circular through hole on the anchoring test bed;
the anchoring assembly comprises an anchor rod or an anchor cable, a butterfly-shaped tray and a nut, the upper end of the anchor rod or the anchor cable upwards penetrates through a certain two first circular through holes which vertically correspond to each other and extends into the corrosion test box and is anchored at the bottom of the coal-rock material sample, the lower end of the anchor rod or the anchor cable downwards penetrates through a third circular through hole, the butterfly-shaped tray is sleeved at the lower end of the anchor rod or the anchor cable and is in close contact with the lower surface of the second square steel plate on the upper side, and the nut is sleeved at the lower end of the anchor rod or the anchor cable in a threaded manner and is in close contact with the lower portion of the butterfly-shaped tray.
7. The method of operating a bolt or cable impact test apparatus in a corrosive environment of claim 6, wherein: the method specifically comprises the following steps:
(1) and a fixed test device is installed: fixing a support frame on a hard ground by using foundation bolts according to a basic diagram, keeping an anchoring test bed horizontal, and then fixedly installing a corrosion test box on the anchoring test bed and debugging the corrosion test box;
(2) cutting according to the size of the coal-rock mass material test rack to manufacture a coal-rock mass material sample, and placing the coal-rock mass material sample into the coal-rock mass material test rack for fixing;
(3) drilling an anchoring hole at the bottom of the coal rock material sample: starting an anchor rod drilling machine, enabling a drill rod to vertically and upwards sequentially penetrate through a certain two first circular through holes which vertically correspond to each other, extending into a corrosion test box, enabling the upper end of an anchor rod to upwards drill at the bottom of a coal-rock body material sample to a depth required by a test, stopping drilling, and dismounting the drill rod to obtain an anchoring hole required by the test;
(4) fixedly installing an anchor rod or an anchor cable in the anchoring hole;
(5) connecting the impact dynamic load applying mechanism with the anchor rod or the anchor cable and fixedly installing the impact dynamic load applying mechanism at the bottom of the anchoring test bed;
(6) respectively injecting prepared neutral solution, acid solution and alkaline solution into the neutral liquid containing groove, the acid liquid containing groove and the alkaline liquid containing groove, and starting a corrosion test;
(7) and when the corrosion test is carried out for 30 days, 60 days and 90 days respectively, the dynamic impact test of the heavy hammer with different strong degrees is started, the impact hammer moves upwards to different positions and heights and then freely falls, the impact hammer falls from top to bottom to impact the second square steel plate on the lower side, so that the anchor rod or the anchor cable is impacted and drawn, and the performance rule that the anchoring force of the anchor rod or the anchor cable resists impact in different corrosion environments and different corrosion degrees can be explored through the drawing test of the anchor rod or the anchor cable.
8. An impact test device for anchor rods or anchor cables in corrosive environments, according to claim 7, wherein: the step (4) is specifically as follows: and (3) placing the resin anchoring agent cartridge at the bottom of the anchoring hole drilled in the step (3), inserting the lower end of the anchor rod or the anchor cable into a drill bit of an anchor rod drilling machine for fixing, penetrating the upper end of the anchor rod or the anchor cable through two first circular through holes corresponding to the anchoring hole and extending into the anchoring hole, enabling the upper end of the anchor rod or the anchor cable to be in contact with the resin anchoring agent cartridge, starting the anchor rod drilling machine, driving the anchor rod or the anchor cable to rotate by the anchor rod drilling machine, and enabling the anchor rod or the anchor cable to stir the resin anchoring agent cartridge to be fixed in the anchoring hole to finish anchoring.
9. An impact test device for anchor rods or anchor cables in corrosive environments, according to claim 8, wherein: the step (5) is specifically as follows: and correspondingly sleeving the third circular through hole on the second square steel plate on the upper side at the lower end of the anchor rod or the anchor cable, enabling the upper surface of the second square steel plate on the upper side to be in close contact with the lower surface of the anchoring test bed, sleeving the butterfly-shaped tray at the lower end of the anchor rod or the anchor cable and being in close contact with the lower surface of the second square steel plate on the upper side, and sleeving the nut at the lower end of the anchor rod or the anchor cable and pre-tightening the nut.
10. An impact test device for anchor rods or anchor cables in corrosive environments, according to claim 9, wherein: the step (6) is specifically as follows: sealing a gap between the anchor rod or the anchor cable and the two first circular through holes which penetrate through the anchor rod or the anchor cable, then respectively injecting prepared neutral solution, acidic solution and alkaline solution into the neutral liquid containing groove, the acidic liquid containing groove and the alkaline liquid containing groove, a humidity sensor and a temperature sensor are turned on through a numerical control console, a certain U-shaped temperature controller is selectively turned on, meanwhile, selectively opening the neutral atomizer, the acidic atomizer and the alkaline atomizer, spraying the neutral solution in the neutral liquid containing groove downwards onto the upper part of the coal-rock mass material sample through the neutral atomizer, spraying the acidic solution in the acidic liquid containing groove downwards onto the upper part of the coal-rock mass material sample through the acidic atomizer, spraying the alkaline solution in the alkaline liquid containing groove downwards onto the upper part of the coal-rock mass material sample through the alkaline atomizer, so that the coal rock mass material sample is subjected to corrosion test under the action of neutral solution, acidic solution or alkaline solution.
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