WO2019119899A1 - 基于电磁作用模拟岩层断裂与离层的锚杆索工作性能测试装置及方法 - Google Patents
基于电磁作用模拟岩层断裂与离层的锚杆索工作性能测试装置及方法 Download PDFInfo
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- WO2019119899A1 WO2019119899A1 PCT/CN2018/105354 CN2018105354W WO2019119899A1 WO 2019119899 A1 WO2019119899 A1 WO 2019119899A1 CN 2018105354 W CN2018105354 W CN 2018105354W WO 2019119899 A1 WO2019119899 A1 WO 2019119899A1
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- block
- electromagnet
- electromagnetic
- anchor cable
- hydraulic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0025—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of elongated objects, e.g. pipes, masts, towers or railways
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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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
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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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
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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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
- G01N2203/003—Generation of the force
- G01N2203/005—Electromagnetic means
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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
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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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
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
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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
Definitions
- the invention relates to a device and a method for testing the working performance of a rock bolt for simulating rock formation fracture and separation layer based on electromagnetic action, and is particularly suitable for simulating the technical field of working performance of the anchor cable in the roadway.
- the existing anchor cable performance monitoring device simply tests the material properties of the anchor cable and does not reflect the basic performance characteristics of the anchor cable under actual working conditions. In the working state of the anchor cable, not only the vertical stress of the overburden but also the horizontal stress of the surrounding rock mass. Therefore, the basic performance of the anchor cable in the working state is different from the basic performance of the anchor cable in the non-working state. Therefore, the data obtained by simply testing the basic performance of the anchor cable cannot completely guide the on-site anchor. Or the support work of the anchor cable will cause a roof safety accident caused by the breaking of the anchor cable due to the inaccurate monitoring of the performance of the anchor cable.
- the structure is simple and convenient to use, and can effectively test the layered rock movement of the performance change characteristics of the anchor rope under the surrounding rock under the action of surrounding rock in the roadway engineering. Test device and test method for working performance of anchor cable under load.
- the working device for testing the working capacity of the anchor cable under the dynamic load of the layered rock mass of the present invention the device for testing the working performance of the anchor cable and the separation layer based on the electromagnetic action, including the top seat and a plurality of hydraulic columns are arranged between the base, the top seat and the base, and a plurality of hydraulic columns are provided with clamping devices;
- the clamping device comprises two sets of drawn block-shaped clamping bodies, and the two sets of drawn block-shaped clamping bodies are respectively arranged on hydraulic rods or hydraulic cylinders of a plurality of hydraulic columns, and two sets of drawn block-shaped clamping bodies are up and down
- the drawn block-shaped clamping body comprises a plurality of sets of clamping bodies, and the plurality of sets of clamping bodies are used for clamping or loosening the tested anchoring cables
- each set of clamping bodies comprises a front block-shaped clamping body and
- the rear block-shaped clamping body is provided with a block-shaped clamping body hydraulic cylinder connected to the rear block-shaped clamping body, and the front block-shaped clamping body and the rear block-shaped clamping body are slidably connected.
- a block-shaped holder sensor is disposed on a contact surface between the front block-shaped clamping body of each group of clamping bodies and the front block-shaped clamping body of the other group of clamping bodies;
- a layered rock mass simulation device is disposed below the drawn block-shaped clamping body disposed at the hydraulic rod, and the layered rock mass simulation device includes an electromagnet portion
- a hydraulic pushing baffle is respectively arranged on both sides of the electromagnet portion, and each hydraulic pushing baffle is pressed against the hydraulic column on both sides by a baffle at the bottom of the electromagnetic jack, wherein the electromagnetic jack comprises an electromagnet hydraulic cylinder and a hydraulic pressure
- the electromagnet portion includes two sets of corresponding electromagnets, the electromagnet includes an end electromagnet and a front end electromagnet, wherein the end electromagnet is fixed on the finger hydraulic column, and the front end electromagnet is movably connected with the end electromagnet.
- the inner corner of the front end electromagnet and the end electromagnet is provided with an arc-shaped groove at the contact point of the anchor cable test piece, the rubber groove is arranged in the arc-shaped groove, and the safety door is arranged between the two front end electromagnets
- the electromagnet portion can be taken out after the safety door is opened, and the front end electromagnet is composed of a plurality of rectangular electromagnetic blocks arranged side by side, the safety door is disposed outside the plurality of electromagnetic blocks, and the electromagnetic block is provided with a plurality of The solenoid portion, the electromagnet is provided with a gate valve safety door handle and door safety, protection safety door is provided at a front end portion of the electromagnet.
- the number of the rectangular electromagnetic blocks is 4-6, the height of each electromagnetic block is 3-10 cm, the total height is 12 cm-60 cm, and the electromagnet blocks are magnetically interacted to form a complete whole.
- the plurality of internal electromagnetic coils are wound around the cylindrical iron block and integrally embedded in the electromagnetic block body to form a whole body.
- the rubber elastic gasket has a thickness of 2 to 5 cm and is bonded to the inner wall of the arcuate groove of the quarter circle of the electromagnetic block.
- the circular groove formed by the combination of the arc groove is 10 to 50 mm, and the rubber elastic pad.
- the sheet effectively prevents direct contact between the anchor cable and the electromagnet portion, causing damage to the electromagnet block.
- the rubber elastic gasket is used to change the steel contact into elastic contact, thereby reducing the damage to the electromagnet when the bolt cable is broken. .
- a method for testing the working performance of anchor cables based on electromagnetic interaction to simulate rock fracture and separation the steps are as follows:
- the body sensor performs monitoring of the stress change of the anchor cable test piece
- the electromagnetic block is controlled to be powered off, and the hydraulic rods of the plurality of hydraulic columns are controlled to reset, the electromagnetic jack is controlled to contract, the safety gate valve is opened, the safety door portion is opened by the electromagnet door handle, the electromagnet portion is removed, and the drawing is opened.
- the block-shaped holder is taken out and the anchor cable test piece is taken out.
- the invention directly utilizes the electromagnetic force of the electromagnetic block body to simulate the interaction between the surrounding rock and the anchor cable test piece, and accurately records various performance parameters of the working state of the anchor cable test piece through the monitoring part, and has high precision. , has a positive guiding significance for guiding on-site work;
- the horizontal stress of the present invention can be adjusted by pushing the pressure baffle through the hydraulic power part, thereby realizing both the vertical stress effect on the anchor cable material and the horizontal stress effect, and more in line with the actual working state of the anchor cable;
- the invention is designed to use the safety protection door and the safety gate valve to completely close the broken part of the anchor cable test piece in an independent area, thereby improving the safety of equipment instruments and experimental operators;
- the plurality of sets of plate-shaped electromagnetic monomers of the invention are composed, each group of electromagnetic monomers simulates a layer of rock layers, and electromagnetic force gravitation and repulsive force between the electromagnetic cells causes the electromagnetic block parts to move at a certain place.
- the separation layer is used to simulate the separation phenomenon of the rock formation structure on the site, which is convenient to disassemble and assemble, simple in structure and convenient in operation.
- FIG. 1 is a schematic structural view of a bolt and anchor cable performance testing device under the dynamic load of the layered rock mass of the present invention
- FIG. 2 is a cross-sectional view showing the structure A-A of the anchor rod and anchor cable performance testing device under the dynamic load of the layered rock mass of the present invention
- FIG. 3 is a schematic view showing an electromagnet portion of a bolt and anchor cable performance testing device under the dynamic load of the layered rock mass of the present invention
- FIG. 4 is a schematic view showing an electromagnetic block body of a bolt and anchor cable performance testing device under the dynamic load of the layered rock mass of the present invention
- Figure 5 is a schematic view showing the electromagnetic coil inside the electromagnetic block of the anchor rod and anchor cable performance testing device under the dynamic load of the layered rock mass of the present invention
- FIG. 6 is a schematic view of a portion of an electromagnet hydraulic cylinder of a bolt and anchor cable performance testing device under the dynamic load of the layered rock mass of the present invention
- Fig. 7 is a partial plan view showing the drawing block holder of the anchor rod and anchor cable performance testing device under the dynamic load of the layered rock mass of the present invention.
- the apparatus for testing the working performance of the anchor cable and the separation layer based on the electromagnetic action of the present invention comprises a top seat 1 and a base 2, and a plurality of hydraulic columns 3 are arranged between the top seat 1 and the base 2 a plurality of hydraulic columns 3 are provided with clamping devices;
- the clamping device comprises two sets of drawn block-shaped clamping bodies 4, and two sets of drawn block-shaped clamping bodies 4 are respectively arranged on hydraulic rods or hydraulic cylinders of a plurality of hydraulic columns 3, and two sets of drawing block clamps
- the holding body 4 is disposed upside down, the drawing block-shaped clamping body 4 comprises a plurality of sets of clamping bodies, and the plurality of sets of clamping bodies are used for clamping or loosening the tested anchoring cables, and each set of clamping bodies comprises a front block.
- the block-shaped holder body 4-1 and the rear block-shaped holder 4-2 are provided with a block-shaped holder hydraulic cylinder 4 connected to the rear block-shaped holder 4-2.
- the front block-shaped holding body 4-1 and the rear block-shaped holding body 4-2 are slidably connected, and the front block-shaped holding body 4-1 of each group of the holding body and the front of the other group holding body a block-shaped holder sensor 4-4 is disposed on the contact surface between the block-shaped clamping bodies 4-1;
- a layered rock mass simulation device is provided below the drawn block-shaped clamping body 4 disposed at the hydraulic rod, and the layered rock mass simulation device includes electromagnetic
- the body portion 7 is provided with hydraulic pushing baffles 14 on both sides of the electromagnet portion 7, and each hydraulic pressing baffle 14 is pressed against the hydraulic column 3 on both sides by a baffle at the bottom of the electromagnetic jack, the electromagnetic jack
- the electromagnet cylinder 6 and the hydraulic support portion 5 are included, and the electromagnet portion 7 includes two sets of corresponding electromagnets, and the electromagnet includes an end electromagnet 7-1 and a front end electromagnet 7-2, wherein the end electromagnet 7-1 Fixed on the finger hydraulic column 3, the front end electromagnet 7-2 and the end electromagnet 7-1 are movably connected to facilitate free disassembly, the inner corner of the front end electromagnet 7-2 and the end electromagnet 7-1 and the anchor cable test
- the contact portion of the member 8 is provided with an arc-shaped groove
- the circular groove formed by the combination of the arc groove is 10 to 50 mm, and the rubber elastic gasket 12 is effectively prevented.
- the anchor cable directly contacts the electromagnet portion 7 to cause damage to the electromagnet block.
- the rubber elastic gasket 12 is used to change the steel contact into an elastic contact, thereby reducing damage to the electromagnet when the anchor cable is broken.
- a safety door 7-3 is disposed between the two front end electromagnets 7-2.
- the electromagnet portion 7 can be taken out after the safety door 7-3 is opened.
- the front end electromagnet 7-2 is composed of a plurality of rectangular electromagnetic block bodies 9 side by side, rectangular electromagnetic The number of blocks 9 is 4-6, the height of each electromagnetic block 9 is 3-10 cm, and the total height is 12 cm-60 cm.
- the electromagnet block 9 uses magnetic force to form a complete whole, and the safety door 7-3 is set.
- a plurality of internal electromagnetic coils 10 are disposed in the electromagnetic block body 9, and the plurality of internal electromagnetic coils 10 are wound around the cylindrical iron block and integrally embedded in the electromagnetic block body 9 to form a whole body.
- the safety door 7-3 is provided with an electromagnet door handle 11 and a safety gate valve 13, and the safety door 7-3 is a protection measure provided at the front end of the electromagnet portion 7.
- a method for testing the working performance of anchor cables based on electromagnetic interaction to simulate rock fracture and separation the steps are as follows:
- the block-shaped holder sensor 4-4 performs monitoring of the stress change of the anchor cable test piece 8;
- the electromagnetic block 9 is controlled to be powered off, and at the same time, the hydraulic rods of the plurality of hydraulic columns 3 are controlled to be reset, the electromagnetic jack is controlled to contract, the safety gate valve 13 is opened, and the safety door portion 7-3 is opened by the electromagnet door handle 11 and removed.
- the electromagnet portion 7, the pull-up block-shaped holder 4 is opened, and the anchor cable test piece 8 is taken out.
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Abstract
Description
Claims (5)
- 一种基于电磁作用模拟岩层断裂与离层的锚杆索工作性能测试装置,包括顶座(1)和底座(2),顶座(1)和底座(2)之间设有多根液压立柱(3),多根液压立柱(3)上设有夹持装置,其特征在于:所述夹持装置包括两组拉拔块状夹持体(4),两组拉拔块状夹持体(4)分别设置在多根液压立柱(3)的液压杆或者液压缸上,两组拉拔块状夹持体(4)上下相对设置,所述拉拔块状夹持体(4)包括多组夹持体,多组夹持体用于夹住或松开被测锚杆索,每组夹持体包括前块状夹持体(4-1)和后块状夹持体(4-2),前块状夹持体(4-1)内设有与后块状夹持体(4-2)连接的块状夹持体液压缸(4-3),前块状夹持体(4-1)与后块状夹持体(4-2)之间滑动连接,每组夹持体的前块状夹持体(4-1)与其他组夹持体的前块状夹持体(4-1)之间的接触面上设有块状夹持体感应器(4-4);在两组拉拔块状夹持体(4)之间,靠近设置在液压杆处的拉拔块状夹持体(4)的下方设有层状岩体模拟装置,所述层状岩体模拟装置包括电磁体部分(7),电磁体部分(7)两侧分别设有液压推压挡板(14),每个液压推压挡板(14)通过电磁千斤顶底部的挡板抵在两侧的液压立柱(3)上,所述的电磁千斤顶包括电磁体液压缸(6)和液压支撑部分(5),电磁体部分(7)包括两组相对应设置的电磁体,电磁体包括末端电磁体(7-1)和前端电磁体(7-2),其中末端电磁体(7-1)固定在指液压立柱(3)上,前端电磁体(7-2)与末端电磁体(7-1)之间活动连接,便于自由拆卸,前端电磁体(7-2)和末端电磁体(7-1)的内角与锚杆索试件(8)接触处设有弧形凹槽,弧形凹槽内设有橡胶弹性垫片(12),两个前端电磁体(7-2)之间设有安全门(7-3),打开安全门(7-3)后才可以取出电磁体部分(7),前端电磁体(7-2)由多个矩形电磁块体(9)并排构成,安全门(7-3)设置在多个电磁块体(9)的外侧,电磁块体(9)中设有多个内部电磁线圈(10),安全门(7-3)上设有电磁体门把手(11)和安全门阀(13),安全门(7-3)为设置在电磁体部分(7)前端的保护措施。
- 根据权利要求1所述的基于电磁作用模拟岩层断裂与离层的锚杆索工作性能测试装置,其特征在于:所述的矩形电磁块体(9)数量在4~6个,每个电磁块体(9)的高度为3~10cm,总高度为12cm~60cm,电磁体块体(9)利用磁力相互作用形成一个完整的整体。
- 根据权利要求1所述的基于电磁作用模拟岩层断裂与离层的锚杆索工作性能测试装置,其特征在于:所述多个内部电磁线圈(10)缠绕在圆柱状铁块上整体嵌入电磁块体(9)体内形成一个整体。
- 根据权利要求1所述的基于电磁作用模拟岩层断裂与离层的锚杆索工作性能测试装置,其特征在于:所述橡胶弹性垫片(12)厚度为2~5cm,粘结在电磁块体(9)的四分之一圆的弧形凹槽内壁上,弧形凹槽组合形成的圆形孔径为10~50mm,橡胶弹性垫片(12) 有效防止锚杆索与电磁体部分(7)直接的钢性接触,造成对电磁体块的损伤,利用橡胶弹性垫片(12),改钢性接触为弹性接触,减少了锚杆索破断时对电磁体的损伤。
- 一种使用权利要求1所述基于电磁作用模拟岩层断裂与离层的锚杆索工作性能测试装置的测试方法,其特征在于步骤如下:a、调整多根液压立柱(3)的液压杆升起,带动上拉拔夹持部分(4)移动,使上下拉拔块状夹持体(4)的位置适合锚杆索试件(8)的长度,前端块状夹持体(4-1)中的块状夹持体液压缸(4-3)的伸长,使块状夹持体的末端(4-2)延前端块状夹持体(4-1)斜向上运动,从而张开拉拔块状夹持体(4),将锚杆索试件(8)放入张开拉拔块状夹持体(4)中,控制拉拔块状夹持体(4)中的夹持块体的液压缸(4-3)收缩,使块状夹持体的末端(4-2)斜向下运动,闭合拉拔块状夹持部分(4)的夹持部分,将锚杆索的试件(8)夹持紧固;b、打开安全门阀(13),开启安全门(7-3),调整两侧的电磁千斤顶收缩,在锚杆索试件(8)四周分别先后水平安装末端电磁体(7-1)和前端电磁体(7-2)从而将锚杆索试件(8)包裹住,同时保证末端电磁体(7-1)和前端电磁体(7-2)与锚杆索试件(8)接触处位于橡胶弹性垫片(12)处;c、将电磁体部分(7)安装水平后,关闭安全门部分(7-3),固定安全门阀(13);d、推送电磁千斤顶带动液压推压挡板(14),将水平安装的电磁体部分(7)整体向锚杆索试件(8)施加水平应力,从而向锚杆索试件(8)模拟围岩紧固相互影响的作用;e、控制多根液压立柱(3)的液压杆上升,从而向固定在拉拔块状夹持体(4)中的锚杆索试件(8)施加拉拔力,同时利用拉拔块状夹持体(4)上的块状夹持体感应器(4-4)实施监测锚杆索试件(8)的应力变化;f、根据需要控制任意电磁块体(9)中的内部电磁线圈(10)电流反向,从而产生相反的力,使得产生方向电流的电磁块体(9)所在的电磁体部分(7)指定位置模拟出层状岩体动载荷的离层现象;g、持续监测锚杆索试件(8)的应力变化,记录锚杆索试件(8)在发生层状岩体动载荷离层现象时的力学数据的变化;h、观测完毕,控制电磁块体(9)断电,同时控制多根液压立柱(3)的液压杆复位,控制电磁千斤顶收缩,打开安全门阀(13),利用电磁体门把手(11)打开安全门部分(7-3),取下电磁体部分(7),打开拉拔块状夹持体(4),取出锚杆索试件(8)。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA3070440A CA3070440C (en) | 2017-12-18 | 2018-09-13 | Anchor rod or cable operating performance testing device designed to simulate fracturation and bed separation based on electromagnetic action and method thereof |
US16/487,425 US11199484B2 (en) | 2017-12-18 | 2018-09-13 | Device and method for testing working performance of anchor rod cable by simulating rock stratum fracture and separation on basis of electromagnetic action |
AU2018388916A AU2018388916B2 (en) | 2017-12-18 | 2018-09-13 | Device and method for testing working performance of anchor rod cable by simulating rock stratum fracture and separation on basis of electromagnetic action |
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Application Number | Priority Date | Filing Date | Title |
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CN201711363794.8A CN108106936B (zh) | 2017-12-18 | 2017-12-18 | 基于电磁作用模拟岩层断裂与离层的锚杆索工作性能测试装置及方法 |
CN201711363794.8 | 2017-12-18 |
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WO2019119899A1 true WO2019119899A1 (zh) | 2019-06-27 |
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