CN114323966B - Comprehensive mechanical property test system and method for underground engineering anchoring material - Google Patents
Comprehensive mechanical property test system and method for underground engineering anchoring material Download PDFInfo
- Publication number
- CN114323966B CN114323966B CN202210234558.0A CN202210234558A CN114323966B CN 114323966 B CN114323966 B CN 114323966B CN 202210234558 A CN202210234558 A CN 202210234558A CN 114323966 B CN114323966 B CN 114323966B
- Authority
- CN
- China
- Prior art keywords
- force
- anchor
- test piece
- drop hammer
- oil cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a comprehensive mechanical property test system and a method for an underground engineering anchoring material, the comprehensive mechanical property test system for the underground engineering anchoring material comprises a first test bed and a detection system, the first test bed comprises a first support, a hollow oil cylinder and a drop hammer, a first suspension part is arranged at the top of the first support so as to fix the upper end part of an anchor rod/anchor cable test piece on the first suspension part, the hollow oil cylinder is arranged on the support and positioned at the lower part of the first suspension part, one part of the drop hammer is arranged in a cavity of the hollow oil cylinder in a penetrating way and can move linearly up and down in the cavity of the hollow oil cylinder, a first through hole is arranged at the center of the drop hammer, the detection system comprises a first force sensor, a second force sensor and a data acquisition device, the first force sensor is arranged at the lower end of the drop hammer, the second force sensor is arranged at the lower end of an action arm of the hollow oil cylinder, the data acquisition device is electrically connected with the first force sensor and the second force sensor through the data input port respectively.
Description
Technical Field
The invention relates to the technical field of underground chamber support, in particular to a comprehensive mechanical property test system and method for an underground engineering anchoring material.
Background
Along with the gradual deep development of underground engineering such as coal mines and the like, the underground engineering faces more and more complex geological conditions such as high stress of surrounding rocks, fault structure areas and the like.
The conventional supporting materials comprise anchor rods/anchor cables and anchor nets with the anchor rods/anchor cables, the conventional supporting materials are difficult to meet supporting requirements, and phenomena of shear damage of the anchor rods/anchor cables, tensile breakage of the anchor rods/anchor cables, tearing or net bags of the reinforcing nets and the like often occur. In order to achieve better supporting effect, novel anchor rods/anchor cables and novel nets with higher material performance are successfully developed.
At present, the traditional anchor rods/anchor cables, novel anchor rods/anchor cables and anchor nets have fewer researches on stress performance and coupling support effect. The existing mechanical property test system for the support material has the following defects:
most of the current test devices are in a single loading mode, and dynamic and static coupling loading is difficult to realize.
Disclosure of Invention
The invention aims to provide a comprehensive test system and a comprehensive test method for mechanical properties of an underground engineering anchoring material, which have the advantages that: dynamic and static coupling loading is realized, so that the mechanical property of the supporting anchoring part can be mastered more comprehensively and accurately.
The invention relates to a comprehensive mechanical property test system for an underground engineering anchoring material, which comprises a first test bed and a detection system, wherein the first test bed comprises a first support, a hollow oil cylinder and a drop hammer, a first suspension part is arranged at the top of the first support, so that the upper end part of the anchor rod/anchor cable test piece is fixed on the first suspension part, the hollow oil cylinder is arranged on the first bracket and positioned at the lower part of the first suspension part, enabling the lower end part of the anchor rod/anchor cable test piece to penetrate through a cavity of a hollow oil cylinder, wherein the hollow oil cylinder is configured to be used for applying static pressure to a tray at the lower end part of the anchor rod/anchor cable test piece, one part of a drop hammer penetrates through the cavity of the hollow oil cylinder and can linearly move up and down in the cavity of the hollow oil cylinder, a first through hole with the aperture larger than the diameter of the anchor rod/anchor cable test piece is formed in the center of the drop hammer, and the drop hammer is configured to be used for applying dynamic impact force to the tray at the lower end part of the anchor rod/anchor cable test piece; the detection system comprises a first force sensor, a second force sensor and data acquisition equipment, wherein the first force sensor is arranged at the lower end of the drop hammer to detect the dynamic force of the drop hammer, the second force sensor is arranged at the lower end of an action arm of the hollow oil cylinder to detect the static force of the hollow oil cylinder, and the data acquisition equipment is electrically connected with the first force sensor and the second force sensor through data input ports respectively to record the static force and the dynamic force acting on the anchor rod/anchor cable test piece.
The comprehensive mechanical property test system for the underground engineering anchoring material can also comprise:
the detection system also comprises a second test bed, the second test bed comprises a second support, a rotating device and a stretching device, the second support is arranged at the lower part of the hollow oil cylinder, the rotating device is arranged at one end part of the second support, a first clamp is arranged on a rotating shaft of the rotating device, the stretching device and the rotating device are oppositely arranged at the other end part of the second support, a second clamp is arranged on an action arm of the stretching device, the second clamp and the first clamp are configured to be used for respectively and horizontally clamping two ends of the anchor rod/anchor cable test piece, the hollow oil cylinder and the drop hammer are configured to be used for applying shearing force to the horizontally arranged anchor rod/anchor cable test piece, the detection system also comprises a torsion sensor and a third force sensor, the torsion sensor is arranged on the first clamp and is electrically connected with the data acquisition equipment so as to detect the torsion of the rotating device, the third force sensor is arranged on the second clamp and is electrically connected with the data acquisition equipment, to detect the static force of the stretching device.
The second test bed further comprises a third support and a fourth support, the third support and the fourth support are installed on the second support at intervals and located on two sides of the hollow oil cylinder respectively, a second suspension portion is arranged at the top of the third support, a third suspension portion is arranged at the top of the fourth support, and the third suspension portion and the second suspension portion are jointly configured to be used for installing an anchor net test piece, so that the hollow oil cylinder and the drop hammer exert detection acting force on the anchor net test piece.
The first test bed further comprises a guide cylinder, the guide cylinder is sleeved in the cavity of the hollow oil cylinder, and one part of the drop hammer penetrates through the guide cylinder and can move linearly up and down in the cavity of the guide cylinder.
The first test bed further comprises a crane, the crane is arranged on the first support between the drop hammer and the first suspension portion, and the crane is connected with the upper end of the drop hammer through a lifting rope to drive the drop hammer to move upwards.
The first test bed further comprises an electromagnet device, the electromagnet device and the crane are oppositely arranged at the upper end of the drop hammer, so that when the drop hammer moves upwards in place, the electromagnet device is abutted to the crane and adsorbed on the crane.
The first suspension part is provided with a second through hole, so that the upper end of the anchor rod/anchor cable test piece penetrates through the second through hole and is locked on the first suspension part through the first lock assembly, and the first through hole of the drop hammer is opposite to the second through hole.
The second suspension part is provided with at least one third through hole, the third suspension part is provided with at least one fourth through hole, so that the upper ends of the anchoring parts at the two ends of the anchor net test piece respectively penetrate through the third through hole and the fourth through hole, and are locked on the second suspension part and the third suspension part respectively through the second lock assembly and the third lock assembly.
The detection system further comprises a fourth force sensor, the fourth force sensor is arranged between the first locking component and the first suspension part and electrically connected with the data acquisition equipment, and the fourth force sensor and the first force sensor jointly detect the dynamic force of the drop hammer.
The invention also provides a mechanical property test method of the anchoring part, and the comprehensive mechanical property test system of the underground engineering anchoring material comprises the following steps:
when a dynamic and static coupling tensile loading test needs to be carried out on the anchor rod/anchor cable test piece, the anchor rod/anchor cable test piece penetrates through a first through hole of the drop hammer and a cavity of the hollow oil cylinder, the upper end portion of the anchor rod/anchor cable test piece is suspended on the first suspension portion, a tray is installed at the lower end portion of the anchor rod/anchor cable test piece, the hollow oil cylinder loads static force on the tray, the drop hammer loads dynamic force on the tray, the first force sensor detects the dynamic force of the drop hammer, the second force sensor detects the static force of the hollow oil cylinder, and the data acquisition equipment records data of the dynamic force and the static force respectively.
When a dynamic and static coupling shearing loading test needs to be carried out on the anchor rod/anchor cable test piece, two ends of the anchor rod/anchor cable test piece are respectively fixed on a first clamp of a rotating device and a second clamp of a stretching device, a hollow oil cylinder loads vertical static force on the anchor rod/anchor cable test piece, a drop hammer loads dynamic force on the anchor rod/anchor cable test piece, a first force sensor detects the dynamic force of the drop hammer, a second force sensor detects the static force of the hollow oil cylinder, and a data acquisition device respectively records data of the dynamic force and the static force.
When a dynamic and static coupling torsional shear loading test needs to be carried out on the anchor rod/anchor cable test piece, the rotating device loads torsion on the first clamp and the anchor rod/anchor cable test piece, the hollow oil cylinder loads a vertical static force on the anchor rod/anchor cable test piece, the drop hammer loads a vertical dynamic force on the anchor rod/anchor cable test piece, the first force sensor detects the dynamic force of the drop hammer, the second force sensor detects the static force of the hollow oil cylinder, the torsion sensor detects the torsion of the rotating device, and the data acquisition equipment records data of the dynamic force, the static force and the torsion respectively.
When a dynamic and static coupling tension-shear loading test needs to be carried out on the anchor rod/anchor cable test piece, the stretching device loads a stretching force on the first clamp and the anchor rod/anchor cable test piece, the hollow oil cylinder loads a vertical static force on the anchor rod/anchor cable test piece, the drop hammer loads a vertical dynamic force on the anchor rod/anchor cable test piece, the first force sensor detects a dynamic force of the drop hammer, the second force sensor detects a static force of the hollow oil cylinder, the third force sensor detects a torsion force of the stretching device, and the data acquisition equipment records data of the dynamic force, the static force and the stretching force respectively.
When a dynamic and static coupling loading test needs to be carried out on the anchor net, anchor rods/anchor cable test pieces at two ends of the anchor net are respectively hung on the second hanging part and the third hanging part, the hollow oil cylinder loads vertical static force on a concrete block part of the anchor net, the drop hammer loads dynamic force on the concrete block part of the anchor net, the first force sensor detects the dynamic force of the drop hammer, the second force sensor detects the static force of the hollow oil cylinder, and the data acquisition equipment respectively records data of the dynamic force and the static force.
Compared with the prior art, the comprehensive test system and the test method for mechanical property of the underground engineering anchoring material have the advantages that: the dynamic and static coupling loading test is realized, so that the mechanical property of the supporting anchoring piece is more comprehensively and accurately mastered, and the data of the optimal supporting system is obtained.
Drawings
FIG. 1 is a schematic diagram of a state in which a supporting anchoring test piece is not placed in the comprehensive mechanical property test system for the underground engineering anchoring material.
FIG. 2 is a schematic diagram of a dynamic and static coupling tensile test state of an anchor rod/anchor cable test piece by the comprehensive test system for mechanical properties of the underground engineering anchoring material.
FIG. 3 is a schematic diagram of a dynamic and static coupling torsional shear test state of an anchor rod/anchor cable test piece by the comprehensive test system for mechanical properties of the underground engineering anchoring material.
FIG. 4 is a schematic diagram of a dynamic and static coupling loading test state of an anchor net test piece by the comprehensive test system for mechanical properties of the underground engineering anchoring material.
Description of the figures
1. A first test stand; 11. a first bracket; 111. a first suspending part; 12. a hollow oil cylinder; 13. dropping a hammer; 14. a guide cylinder; 15. hoisting a machine; 16. an electromagnet device;
2. a detection system; 21. a first force sensor; 22. a second force sensor; 23. a data acquisition device; 24. a torque sensor; 25. a third force sensor; 26. a fourth force sensor;
3. a second test stand; 31. a second bracket; 32. a rotating device; 33. a stretching device; 34. a third support; 341. a second suspending part; 35. a fourth bracket; 351. a third suspending part;
4. a first lock assembly;
5. a second lock assembly;
6. a third lock assembly;
7. anchor rod/anchor cable test piece; 71. a tray;
8. anchoring a net test piece; 81. a concrete block portion; 82. and (3) a net.
Detailed Description
The comprehensive mechanical property testing system and method for the underground engineering anchoring material of the invention are further described in detail with reference to fig. 1 to 4 of the accompanying drawings.
The invention relates to a comprehensive test system for mechanical properties of an underground engineering anchoring material, which refers to the related drawings of fig. 1 to 4 and comprises a first test bed 1 and a detection system 2.
The first test stand 1 includes a first bracket 11, and a hollow cylinder 12 and a drop hammer 13 mounted on the first bracket 11.
The first bracket 11 includes a base and four pillars vertically fixed on the base, and the tops of the four pillars are provided with first suspending portions 111, so that the upper end portion of the anchor rod/anchor cable test piece 7 is fixed on the first suspending portions 111. For example, the first suspending portion 111 is a thick steel plate horizontally disposed.
The hollow cylinder 12 has a cavity in the center, the hollow cylinder 12 is mounted on the first bracket 11 and located at the lower part of the first suspending part 111, so that the lower end part of the anchor rod/anchor cable test piece 7 passes through the cavity of the hollow cylinder 12, and the hollow cylinder 12 is configured to apply a static pressure to the tray 71 at the lower end part of the anchor rod/anchor cable test piece 7 for loading a tensile force.
A part of the drop hammer 13 penetrates through the cavity of the hollow oil cylinder 12 and can move linearly up and down in the cavity of the hollow oil cylinder 12, a first through hole with the aperture larger than the diameter of the anchor rod/anchor cable test piece 7 is formed in the center of the drop hammer 13 to be sleeved outside the anchor rod/anchor cable test piece 7, and the drop hammer 13 is configured to apply dynamic impact force to a tray 71 at the lower end part of the anchor rod/anchor cable test piece 7.
The detection system 2 comprises a first force sensor 21, a second force sensor 22 and a data acquisition device 23, wherein the first force sensor 21 is arranged at the lower end of the drop hammer 13 to detect the dynamic force of the drop hammer 13, the second force sensor 22 is arranged at the lower end of the action arm of the hollow oil cylinder 12 to detect the static force of the hollow oil cylinder 12, and the data acquisition device 23 is electrically connected with the first force sensor 21 and the second force sensor 22 through data input ports respectively to record the static force and the dynamic force acting on the anchor rod/anchor cable test piece 7.
Referring to the relevant figures of fig. 1 to 4, the comprehensive mechanical property testing system for the underground engineering anchoring material of the present invention may further include: the test bed further comprises a second test bed 3, and the second test bed 3 comprises a second bracket 31, a rotating device 32 and a stretching device 33.
The second bracket 31 is disposed at a lower portion of the hollow cylinder 12, for example, the second bracket 31 is inserted between two end pillars of the first bracket 11, and the second bracket 31 and the first bracket 11 together form an inverted T shape.
The rotating device 32 is installed at one end of the horizontal table of the second bracket 31, and a first clamp is arranged on a rotating shaft of the rotating device 32.
A stretching device 33 is mounted on the other end portion of the second bracket 31 opposite to the rotating device 32, and a second clamp is provided on the action arm of the stretching device 33, and the second clamp and the first clamp are configured to horizontally clamp both ends of the anchor rod/anchor cable test piece 7, respectively.
The hollow cylinder 12 is configured to apply a static shearing force to the horizontally arranged bolt/anchor cable test piece 7, and the drop hammer 13 is configured to apply a dynamic shearing force to the horizontally arranged bolt/anchor cable test piece 7.
The detecting system 2 further comprises a torque sensor 24 and a third force sensor 25, wherein the torque sensor 24 is disposed on the first fixture and electrically connected to the data collecting device 23 to detect the torque of the rotating device 32, and the third force sensor 25 is disposed on the second fixture and electrically connected to the data collecting device 23 to detect the static force of the stretching device 33.
Referring to the relevant figures of fig. 1 to 4, the comprehensive mechanical property testing system for the underground engineering anchoring material of the present invention may further include: the second test stand 3 further comprises a third support 34 and a fourth support 35, wherein the third support 34 and the fourth support 35 are mounted on the second support 31 at intervals and are respectively located on two sides of the hollow oil cylinder 12.
The top of the third support 34 is provided with a second suspension portion 341, the top of the fourth support 35 is provided with a third suspension portion 351, and the third suspension portion 351 and the second suspension portion 341 are jointly configured to be used for installing the anchor net test piece 8, so that the hollow oil cylinder 12 and the drop hammer 13 apply detection acting force to the anchor net test piece 8, and therefore mechanical property comprehensive test of anchor net coupling is achieved.
Referring to the relevant figures of fig. 1 to 4, the comprehensive mechanical property testing system for the underground engineering anchoring material of the present invention may further include: the first test bed 1 further comprises a guide cylinder 14, the guide cylinder 14 is sleeved in the cavity of the hollow oil cylinder 12, and a part of the drop hammer 13 penetrates through the guide cylinder 14 and can move linearly up and down in the cavity of the guide cylinder 14 so as to guide the movement of the drop hammer 13.
Referring to the relevant figures of fig. 1 to 4, the comprehensive mechanical property testing system for the underground engineering anchoring material of the present invention may further include: the first test stand 1 further includes a crane 15, the crane 15 is disposed on the first support 11 between the drop weight 13 and the first suspending portion 111, and the crane 15 is connected to the upper end of the drop weight 13 through a lifting rope to drive the drop weight 13 to move upward.
For example, the drop hammer 13 has a T-shape to increase the weight of the drop hammer 13, thereby increasing the impact force of the drop hammer 13.
Referring to the relevant figures of fig. 1 to 4, the comprehensive mechanical property testing system for the underground engineering anchoring material of the present invention may further include: the first test bed 1 further comprises an electromagnet device 16, the electromagnet device 16 is arranged at the upper end of the drop hammer 13 opposite to the crane 15, the electromagnet device 16 can absorb the drop hammer 13 after being electrified, the crane 15 pulls the electromagnet device 16 to ascend through a lifting rope, and the drop hammer 13 ascends along with the electromagnet device 16. When dynamic force loading is required, the power supply of the electromagnet device 16 is disconnected, and the drop hammer 13 impacts the anchor rod/anchor cable test piece 7 downwards.
Referring to the relevant figures of fig. 1 to 4, the comprehensive mechanical property testing system for the underground engineering anchoring material of the present invention may further include: the anchor rod/anchor cable test piece hanging device further comprises a first lock assembly 4, a second through hole is formed in the first hanging portion 111, so that the upper end of the anchor rod/anchor cable test piece 7 penetrates through the second through hole and is locked on the first hanging portion 111 through the first lock assembly 4, and the first through hole of the drop hammer 13 is opposite to the second through hole.
Referring to fig. 1 to 4, the comprehensive mechanical property testing system for the anchoring material in the underground engineering of the present invention may further include: the anchor net test piece comprises a second hanging portion 341 and a third hanging portion 351, and is characterized by further comprising a second lock assembly 5 and a third lock assembly 6, wherein the second hanging portion 341 is provided with at least one third through hole, and the third hanging portion 351 is provided with at least one fourth through hole, so that the upper ends of anchoring pieces at two ends of an anchor net test piece 8 respectively penetrate through the third through hole and the fourth through hole and are locked on the second hanging portion 341 and the third hanging portion 351 through the second lock assembly 5 and the third lock assembly 6 respectively.
The first lock component 4, the second lock component 5 and the third lock component 6 all comprise nuts and ring-shaped baffle plates, the ring-shaped baffle plates are sleeved on the anchor rod/anchor cable test piece 7, the nuts are installed at the upper end portion of the anchor rod/anchor cable test piece 7, and the nuts and the ring-shaped baffle plates jointly prevent the anchor rod/anchor cable test piece 7 from being separated from the suspension portion.
Referring to the relevant figures of fig. 1 to 4, the comprehensive mechanical property testing system for the underground engineering anchoring material of the present invention may further include: the detection system 2 further includes a fourth force sensor 26, the fourth force sensor 26 is disposed between the first latch component 4 and the first suspending portion 111 and electrically connected to the data acquisition device 23, and the fourth force sensor 26 and the first force sensor 21 jointly detect the dynamic force of the drop hammer 13.
The invention also provides an anchoring part mechanical property test method, which adopts the comprehensive test system for the mechanical property of the underground engineering anchoring material, and comprises the following steps:
when a dynamic and static coupling tensile loading test needs to be performed on the anchor rod/anchor cable test piece 7, the anchor rod/anchor cable test piece 7 penetrates through a first through hole of the drop hammer 13 and a cavity of the hollow oil cylinder 12, the upper end portion of the anchor rod/anchor cable test piece 7 is suspended on the first suspension portion 111, the lower end portion of the anchor rod/anchor cable test piece 7 is mounted on the tray 71, the hollow oil cylinder 12 loads a static force on the tray 71, the drop hammer 13 loads a dynamic force on the tray 71, the first force sensor 21 detects a dynamic force of the drop hammer 13, the second force sensor 22 detects a static force of the hollow oil cylinder 12, and the data acquisition device 23 records data of the dynamic force and the static force respectively. And when the hollow oil cylinder 12 is loaded, the static coupling test of the anchor rod/anchor cable test piece can be carried out. And only when the drop hammer 13 is loaded, the dynamic coupling test of the anchor rod/anchor cable test piece can be carried out.
When a dynamic and static coupling shearing loading test needs to be performed on the anchor rod/anchor cable test piece 7, two ends of the anchor rod/anchor cable test piece 7 are respectively fixed on a first clamp of a rotating device 32 and a second clamp of a stretching device 33, a vertical static force is loaded on the anchor rod/anchor cable test piece 7 by a hollow oil cylinder 12, a dynamic force is loaded on the anchor rod/anchor cable test piece 7 by a drop hammer 13, a dynamic force of the drop hammer 13 is detected by a first force sensor 21, a static force of the hollow oil cylinder 12 is detected by a second force sensor 22, and data of the dynamic force and the static force are respectively recorded by a data acquisition device 23.
When a dynamic and static coupling torsional shear loading test needs to be performed on the anchor rod/anchor cable test piece 7, the rotating device 32 loads torsion on the first clamp and the anchor rod/anchor cable test piece 7, the hollow oil cylinder 12 loads a vertical static force on the anchor rod/anchor cable test piece 7, the drop hammer 13 loads a dynamic force on the anchor rod/anchor cable test piece 7, the first force sensor 21 detects the dynamic force of the drop hammer 13, the second force sensor 22 detects the static force of the hollow oil cylinder 12, the torsion sensor 24 detects the torsion of the rotating device 32, and the data acquisition device 23 records data of the dynamic force, the static force and the torsion respectively.
When a dynamic and static coupling pulling and shearing loading test needs to be performed on the anchor rod/anchor cable test piece 7, the stretching device 33 loads a stretching force on the first clamp and the anchor rod/anchor cable test piece 7, the hollow oil cylinder 12 loads a vertical static force on the anchor rod/anchor cable test piece 7, the drop hammer 13 loads a dynamic force on the anchor rod/anchor cable test piece 7, the first force sensor 21 detects the dynamic force of the drop hammer 13, the second force sensor 22 detects the static force of the hollow oil cylinder 12, the third force sensor 25 detects the torsion of the stretching device 33, and the data acquisition device 23 records data of the dynamic force, the static force and the stretching force respectively. And when the hollow oil cylinder 12 is loaded, the static coupling test of the anchor rod/anchor cable test piece can be carried out. And only when the drop hammer 13 is loaded, the dynamic coupling test of the anchor rod/anchor cable test piece can be carried out.
When a dynamic and static coupling loading test needs to be performed on the anchor net 8, anchor rods/anchor cable test pieces 7 at two ends of the anchor net 8 are respectively hung on the second hanging portion 341 and the third hanging portion 351, the hollow oil cylinder 12 loads a vertical static force on the concrete block portion 81 of the anchor net 8, the drop hammer 13 loads a dynamic force on the concrete block portion 81 of the anchor net 8, the first force sensor 21 detects the dynamic force of the drop hammer 13, the second force sensor 22 detects the static force of the hollow oil cylinder 12, and the data acquisition device 23 respectively records data of the dynamic force and the static force. And only when the hollow oil cylinder 12 is loaded, an anchor net static force coupling test can be carried out. Only when the drop hammer 13 is loaded, the anchor net dynamic coupling test can be carried out.
The above description is only for the purpose of illustrating a few embodiments of the present invention, and should not be taken as limiting the scope of the present invention, in which equivalent changes, modifications, or scaling up or down, etc. made in accordance with the spirit of the present invention should be considered as falling within the scope of the present invention.
Claims (9)
1. The comprehensive mechanical property test system for the underground engineering anchoring material is characterized by comprising the following components:
the test bed comprises a first test bed (1), wherein the first test bed (1) comprises a first support (11), a hollow oil cylinder (12) and a drop hammer (13), a first suspension part (111) is arranged at the top of the first support (11) so that the upper end part of an anchor rod/anchor cable test piece is fixed on the first suspension part (111), the hollow oil cylinder (12) is installed on the first support (11) and is positioned at the lower part of the first suspension part (111) so that the lower end part of the anchor rod/anchor cable test piece passes through a cavity of the hollow oil cylinder (12), the hollow oil cylinder (12) is configured to apply static pressure on a tray at the lower end part of the anchor rod/anchor cable test piece, a part of the drop hammer (13) penetrates through the cavity of the hollow oil cylinder (12) and can linearly move up and down in the cavity of the hollow oil cylinder (12), and a first through hole with the aperture larger than the diameter of the anchor rod/anchor cable test piece is formed in the center of the drop hammer (13), the drop hammer (13) is configured for applying a dynamic impact force to the tray of the lower end of the bolt/anchor rope test piece; and
the detection system (2) comprises a first force sensor (21), a second force sensor (22) and a data acquisition device (23), wherein the first force sensor (21) is arranged at the lower end of the drop hammer (13) to detect the dynamic force of the drop hammer (13), the second force sensor (22) is arranged at the lower end of the action arm of the hollow oil cylinder (12) to detect the static force of the hollow oil cylinder (12), and the data acquisition device (23) is electrically connected with the first force sensor (21) and the second force sensor (22) through data input ports respectively to record the static force and the dynamic force acting on the anchor rod/anchor cable test piece;
the test bed further comprises a second test bed (3), the second test bed (3) comprises a second support (31), a rotating device (32) and a stretching device (33), the second support (31) is arranged at the lower part of the hollow oil cylinder (12), the rotating device (32) is installed at one end part of the second support (31), a first clamp is arranged on a rotating shaft of the rotating device (32), the stretching device (33) and the rotating device (32) are installed on the other end part of the second support (31) in an opposite mode, a second clamp is arranged on an acting arm of the stretching device (33), the second clamp and the first clamp are configured to be used for horizontally clamping two ends of an anchor rod/anchor cable test piece respectively, the hollow oil cylinder (12) and the drop hammer (13) are configured to be used for exerting shearing force on the horizontally arranged anchor rod/anchor cable test piece, the detection system (2) further comprises a torsion sensor (24) and a third force sensor (25), the torsion sensor (24) is arranged on the first clamp and electrically connected with the data acquisition equipment (23) to detect the torsion of the rotating device (32), and the third force sensor (25) is arranged on the second clamp and electrically connected with the data acquisition equipment (23) to detect the static force of the stretching device (33).
2. The comprehensive mechanical property testing system for the underground engineering anchoring material according to claim 1, wherein the second test bed (3) further comprises a third bracket (34) and a fourth bracket (35), the third bracket (34) and the fourth bracket (35) are mounted on the second bracket (31) at intervals and are respectively located at two sides of the hollow cylinder (12), a second suspension portion (341) is arranged at the top of the third bracket (34), a third suspension portion (351) is arranged at the top of the fourth bracket (35), and the third suspension portion (351) and the second suspension portion (341) are jointly configured to mount an anchor net test piece, so that the hollow cylinder (12) and the drop hammer (13) apply a detection acting force to the anchor net test piece.
3. The comprehensive mechanical property testing system for the underground engineering anchoring material as claimed in claim 2, wherein the first test bed (1) further comprises a guide cylinder (14), the guide cylinder (14) is sleeved in the cavity of the hollow oil cylinder (12), and a part of the drop hammer (13) penetrates through the guide cylinder (14) and can move linearly up and down in the cavity of the guide cylinder (14).
4. The comprehensive mechanical property testing system for the underground engineering anchoring material according to claim 3, wherein the first test bed (1) further comprises a crane (15), the crane (15) is arranged on the first bracket (11) between the drop hammer (13) and the first suspension part (111), the crane (15) is connected with the upper end of the electromagnet device (16) through a lifting rope, and the drop hammer (13) moves upwards along with the electromagnet device (16) by virtue of the adsorption force.
5. The mechanical property comprehensive test system for the underground engineering anchoring material according to claim 4, wherein the first test bed (1) further comprises an electromagnet device (16), the electromagnet device (16) and the crane (15) are arranged at the upper end of the drop hammer (13) oppositely, the electromagnet device (16) can absorb the drop hammer (13) after being electrified, the crane (15) pulls the electromagnet device (16) to ascend through a lifting rope, the drop hammer (13) ascends along with the electromagnet device (16), and the drop hammer (13) instantly falls after the electromagnet device (16) is powered off.
6. The comprehensive mechanical property testing system for the underground engineering anchoring material is characterized by further comprising a first locking device component (4), wherein a second through hole is formed in the first suspension part (111), so that the upper end of a bolt/anchor cable test piece passes through the second through hole and is locked on the first suspension part (111) through the first locking device component (4), and the first through hole of the drop hammer (13) is opposite to the second through hole.
7. The comprehensive mechanical property testing system for the anchoring material of the underground engineering as claimed in claim 6, further comprising a second lock assembly (5) and a third lock assembly (6), wherein the second suspension part (341) is provided with at least one third through hole, and the third suspension part (351) is provided with at least one fourth through hole, so that the upper ends of the anchoring members at the two ends of the anchor net test piece respectively pass through the third through hole and the fourth through hole and are locked on the second suspension part (341) and the third suspension part (351) respectively through the second lock assembly (5) and the third lock assembly (6).
8. The mechanical property comprehensive test system for underground engineering anchoring materials according to claim 7, characterized in that the detection system (2) further comprises a fourth force sensor (26), the fourth force sensor (26) is arranged between the first lock component (4) and the first suspending part (111) and is electrically connected with the data acquisition equipment (23), and the fourth force sensor (26) and the first force sensor (21) jointly detect the dynamic force of the drop hammer (13).
9. The anchoring part mechanical property test method is characterized in that the comprehensive test system for the mechanical property of the underground engineering anchoring material is adopted, and comprises the following steps:
when a dynamic and static coupling tensile loading test needs to be carried out on the anchor rod/anchor cable test piece (7), the anchor rod/anchor cable test piece (7) penetrates through a first through hole of the drop hammer (13) and a cavity of the hollow oil cylinder (12), the upper end part of the anchor rod/anchor cable test piece (7) is suspended and mounted on the first suspension part (111), a tray (71) is mounted at the lower end part of the anchor rod/anchor cable test piece (7), the hollow oil cylinder (12) loads static force on the tray (71), the drop hammer (13) loads dynamic force on the tray (71), the first force sensor (21) detects the dynamic force of the drop hammer (13), the second force sensor (22) detects the static force of the hollow oil cylinder (12), and the data acquisition equipment (23) records data of the dynamic force and the static force respectively;
when a dynamic and static coupling shearing loading test needs to be carried out on the anchor rod/anchor cable test piece (7), two ends of the anchor rod/anchor cable test piece (7) are respectively fixed on a first clamp of the rotating device (32) and a second clamp of the stretching device (33), the hollow oil cylinder (12) loads vertical static force on the anchor rod/anchor cable test piece (7), the drop hammer (13) loads dynamic force on the anchor rod/anchor cable test piece (7), the first force sensor (21) detects the dynamic force of the drop hammer (13), the second force sensor (22) detects the static force of the hollow oil cylinder (12), and the data acquisition device (23) respectively records data of the dynamic force and the static force;
when a dynamic and static coupling torsional shear loading test needs to be carried out on an anchor rod/anchor cable test piece (7), the rotating device (32) loads torsion on the first clamp and the anchor rod/anchor cable test piece (7), the hollow oil cylinder (12) loads vertical static force on the anchor rod/anchor cable test piece (7), the drop hammer (13) loads dynamic force on the anchor rod/anchor cable test piece (7), the first force sensor (21) detects the dynamic force of the drop hammer (13), the second force sensor (22) detects the static force of the hollow oil cylinder (12), the torsion sensor (24) detects the torsion of the rotating device (32), and the data acquisition equipment (23) records data of the dynamic force, the static force and the torsion respectively;
when a dynamic and static coupling pulling and shearing loading test needs to be carried out on an anchor rod/anchor cable test piece (7), a stretching device (33) loads a stretching force on the first clamp and the anchor rod/anchor cable test piece (7), a hollow oil cylinder (12) loads a vertical static force on the anchor rod/anchor cable test piece (7), a drop hammer (13) loads a dynamic force on the anchor rod/anchor cable test piece (7), a first force sensor (21) detects the dynamic force of the drop hammer (13), a second force sensor (22) detects the static force of the hollow oil cylinder (12), a third force sensor (25) detects the torsion of the stretching device (33), and a data acquisition device (23) records data of the dynamic force, the static force and the stretching force respectively;
when a dynamic and static coupling loading test needs to be carried out on the anchor net (8), anchor rod/anchor cable test pieces (7) at two ends of the anchor net (8) are respectively hung on the second hanging part (341) and the third hanging part (351), a vertical static force is loaded on a concrete block part of the anchor net (8) by the hollow oil cylinder (12), a dynamic force is loaded on the concrete block part of the anchor net (8) by the drop hammer (13), the dynamic force of the drop hammer (13) is detected by the first force sensor (21), the static force of the hollow oil cylinder (12) is detected by the second force sensor (22), and data of the dynamic force and the static force are respectively recorded by the data acquisition equipment (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210234558.0A CN114323966B (en) | 2022-03-11 | 2022-03-11 | Comprehensive mechanical property test system and method for underground engineering anchoring material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210234558.0A CN114323966B (en) | 2022-03-11 | 2022-03-11 | Comprehensive mechanical property test system and method for underground engineering anchoring material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114323966A CN114323966A (en) | 2022-04-12 |
| CN114323966B true CN114323966B (en) | 2022-06-24 |
Family
ID=81033973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210234558.0A Active CN114323966B (en) | 2022-03-11 | 2022-03-11 | Comprehensive mechanical property test system and method for underground engineering anchoring material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114323966B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720298B (en) * | 2022-05-10 | 2022-09-20 | 中国矿业大学(北京) | Dynamic and static mechanical property testing system and method for engineering rock mass |
| CN114738349B (en) * | 2022-06-09 | 2022-08-26 | 中国飞机强度研究所 | Loading compensation system and method in airplane vibration fatigue test |
| CN115165621A (en) * | 2022-06-22 | 2022-10-11 | 中煤科工开采研究院有限公司 | Device and method for testing axial mechanical property of anchor rod |
| CN114858582B (en) * | 2022-07-05 | 2022-09-20 | 中国矿业大学(北京) | Comprehensive test device for underground engineering composite stressed material |
| CN118032551B (en) * | 2024-04-11 | 2024-06-18 | 中国矿业大学(北京) | Anchor rod drop hammer type radial impact test device and test method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075943A (en) * | 2014-06-30 | 2014-10-01 | 天地科技股份有限公司 | Test bed for testing integrated mechanical properties of anchor rod and test method |
| CN205426695U (en) * | 2016-03-10 | 2016-08-03 | 辽宁工程技术大学 | Stock impact testing device |
| CN106198227A (en) * | 2016-07-12 | 2016-12-07 | 辽宁工程技术大学 | Accumulation of energy drop hammer type coupled static-dynamic loadingi assay device |
| CN108827578A (en) * | 2018-04-23 | 2018-11-16 | 东北大学 | A kind of the key roof block inbreak experimental rig and method of two-way quiet dynamic load |
| CN208125533U (en) * | 2018-03-22 | 2018-11-20 | 东北大学 | A kind of drop hammer type dynamic impact testing machine |
| CN112595597A (en) * | 2020-12-18 | 2021-04-02 | 绍兴文理学院 | Intelligent monitoring device for drawing of anchor rod (cable) |
-
2022
- 2022-03-11 CN CN202210234558.0A patent/CN114323966B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075943A (en) * | 2014-06-30 | 2014-10-01 | 天地科技股份有限公司 | Test bed for testing integrated mechanical properties of anchor rod and test method |
| CN205426695U (en) * | 2016-03-10 | 2016-08-03 | 辽宁工程技术大学 | Stock impact testing device |
| CN106198227A (en) * | 2016-07-12 | 2016-12-07 | 辽宁工程技术大学 | Accumulation of energy drop hammer type coupled static-dynamic loadingi assay device |
| CN208125533U (en) * | 2018-03-22 | 2018-11-20 | 东北大学 | A kind of drop hammer type dynamic impact testing machine |
| CN108827578A (en) * | 2018-04-23 | 2018-11-16 | 东北大学 | A kind of the key roof block inbreak experimental rig and method of two-way quiet dynamic load |
| WO2019205189A1 (en) * | 2018-04-23 | 2019-10-31 | 东北大学 | Test apparatus and method for key roof block collapse in bidirectional static-dynamic loading |
| CN112595597A (en) * | 2020-12-18 | 2021-04-02 | 绍兴文理学院 | Intelligent monitoring device for drawing of anchor rod (cable) |
Non-Patent Citations (1)
| Title |
|---|
| 恒阻吸能锚杆力学特性与工程应用;王琦 等;《煤炭学报》;20210611;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114323966A (en) | 2022-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114323966B (en) | Comprehensive mechanical property test system and method for underground engineering anchoring material | |
| WO2021004015A1 (en) | Bolt (cable) support structure test, and anchoring system performance comprehensive testing device and method | |
| WO2022165990A1 (en) | Multifunctional test bench for impact load testing of mining support material and test method | |
| CN114383947B (en) | Dynamic and static coupling performance test system for multifunctional anchoring system | |
| CN103076147A (en) | Impact test device | |
| CN112798212B (en) | Anchor rod axial impact test bed and test method | |
| KR20180035427A (en) | Apparatus for pile load test | |
| CN216247447U (en) | Loading device for railway engineering investigation soil sample expansion test | |
| CN111189603A (en) | Roadway anchor rod axial impact resistance in-situ testing device and testing method | |
| CN108051306B (en) | Test device for testing influence of rock separation layer dislocation on anchor cable breakage | |
| CN218297900U (en) | Foundation load strength testing device | |
| CN112781979B (en) | Testing method of anchor rod lateral impact test bed | |
| CN108152141B (en) | Rock mechanics true triaxial experimental apparatus | |
| CN112880958B (en) | Anchoring body axial shock resistance testing method and test bed | |
| CN212296355U (en) | Electric sampling device for large-burial-depth narrow-passage shaft | |
| KR20190055960A (en) | Apparatus for pile load test | |
| CN112326461B (en) | Shear resistance test device for assembly type connecting piece | |
| CN209707087U (en) | Container spreader Special experimental platform | |
| CN220960633U (en) | Stability verification test device for transmitting platform | |
| KR20170121523A (en) | Apparatus for pile load test | |
| CN112161881A (en) | Variable-angle bootstrap type composite material impact strength testing device | |
| CN219973135U (en) | Probe probe rod penetrating and pulling-up equipment for static cone penetration test | |
| CN217717347U (en) | Anchor rod impact mechanical property testing device | |
| CN211873078U (en) | Dynamic drawing testing device for side wall anchor rod of underground tunnel | |
| CN218617216U (en) | Device for testing airborne traction parachute suspension throwing equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |