Anchor cable support monitoring device

Abstract

The utility model provides an anchor cable support monitoring device. The anchor cable support monitoring device comprises an anchor bearing plate, a first force transmission plate, an anchor cable force measuring device and a second force transmission plate which are sequentially arranged together from top to bottom. The anchor bearing plate is mounted in an anchor cable hole through an anchoring agent, and the anchor cable hole is formed in an ore body top plate; the anchor bearing plate, the first force transmission plate, the anchor cable force measuring device and the second force transmission plate are each provided with a first through hole, and the multiple first through holes share the same circle center. An anchoring section of the anchor cable sequentially penetrates through the multiple first through holes from bottom to top, extends into the anchor cable hole and is fixed through an anchoring part, and a tensioning device for enabling the anchor cable to be in a tensioning state is arranged on the lower surface of the second force transmission plate; and the anchor cable force measuring device is used for measuring the stress condition of the anchor cable and reflecting the working state of the anchor cable and the supporting effect of the anchor cable on the ore body according to the stress condition of the anchor cable. The tensile force, tension or load of the anchor cable is detected through the anchor cable force measuring device, and the safety and reliability of ore body mining are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anchor cable support monitoring, and particularly relates to an anchor cable support monitoring device. BACKGROUND

[0002] As a common supporting structure, anchor cables are widely used in the fields of slope, foundation pit, roadway and other engineering construction. The working principle of the anchor cable is mainly that the anchoring section of the anchor cable is inserted into the drill hole in the roof of the ore body, the bottom end is fixed at the stable position in the deep part of the sliding body, and the top end is fixed on the outside of the rock-soil body. The anchor cable prevents the ore body from moving by the shear and tensile resistance of the anchor cable, so as to realize the supporting effect of the anchor cable on the ore body. With the increase of the working time of the anchor cable and the continuous change of the working environment, the anchor cable and the rock-soil body anchored by the anchor cable slowly creep, the anchor cable gradually relaxes, and the prestress of the anchor cable is continuously lost, which reduces the supporting effect of the anchor cable on the ore body. Therefore, in order to timely grasp the supporting situation of the anchor cable on the ore body and improve the supporting efficiency of the anchor cable on the ore body, the present application provides an anchor cable support monitoring device. CONTENT OF THE PRESENT INVENTION

[0003] The present application provides an anchor cable support monitoring device to solve the technical problems described in the background.

[0004] To solve the above technical problems, the present application adopts the following technical solutions:

[0005] The present application provides an anchor cable support monitoring device, which comprises: an anchor pad, a first force transmission plate, an anchor cable force measuring device and a second force transmission plate arranged in sequence from top to bottom.

[0006] The anchor pad is installed in the anchor cable hole by an anchoring agent, and the anchor cable hole is arranged on the roof of the ore body.

[0007] Among them, the anchor pad, the first force transmission plate, the anchor cable force measuring device and the second force transmission plate are all provided with first through holes, and a plurality of first through holes share a common center.

[0008] The anchoring section of the anchor cable penetrates the plurality of first through holes from bottom to top in sequence and extends into the anchor cable hole and is fixed by an anchoring member, and the lower surface of the second force transmission plate is provided with a tensioning device to keep the anchor cable in a tensioned state.

[0009] The anchor cable force measuring device is used for measuring the stress condition of the anchor cable and reflecting the working state of the anchor cable and the supporting effect of the anchor cable on the ore body according to the stress condition of the anchor cable.

[0010] Optionally, the lower surface of the first force transmission plate is provided with a lower clamping groove around the first through hole thereon, and the upper surface of the second force transmission plate is provided with an upper clamping groove around the first through hole thereon.

[0011] The anchor cable force measuring device is provided with an upper clamping block and a lower clamping block matched with the lower clamping groove and the upper clamping groove respectively.

[0012] Optionally, the upper surface of the second force transmission plate is provided with a plurality of limiting plates at equal intervals around the anchor cable force measuring device, and the top ends of the plurality of limiting plates are arranged on the lower surface of the first force transmission plate.

[0013] Optionally, the first force transmission plate and the second force transmission plate are both made of cast iron or steel material with high strength.

[0014] Optionally, the lower surface of the first force transmission plate, the upper surface of the second force transmission plate, and the upper surface and the lower surface of the anchor cable force measuring device are all provided with smooth layers.

[0015] The thicknesses of the plurality of smooth layers are consistent and parallel to each other.

[0016] Optionally, the anchor pad plate is made of No. 45 steel or Q355B steel plate with a preset thickness.

[0017] The preset thickness is greater than 32 mm.

[0018] Optionally, the anchoring agent is made of high molecular resin material.

[0019] Optionally, the anchor cable is made of a plurality of steel strands with a diameter of 19.5 mm to 23.5 mm.

[0020] Optionally, the anchor cable force measuring device is perpendicular to the axis of the anchor cable hole, and the inclination thereof is less than 0.5°, and the eccentricity is less than 5 mm.

[0021] Optionally, the anchor cable force measuring device is an MCJ-200 series vibrating wire anchor cable force measuring device.

[0022] The anchor cable support monitoring device provided by the application, through the anchor cable hole opened on the roof of the ore body and the installation of the anchor pad plate in the anchor cable hole through the anchoring agent, and the first force transmission plate, the anchor cable force measuring device and the second force transmission plate are installed on the lower surface of the anchor pad plate from top to bottom, since the first through hole is opened on the anchor pad plate, the first force transmission plate, the anchor cable force measuring device and the second force transmission plate, and the anchoring section of the anchor cable penetrates the plurality of first through holes from bottom to top and extends into the anchor cable hole and is fixed through the anchoring piece, the anchor cable is pulled tight through the tensioning device, and in the process of the anchor cable force, the prestress of the anchor cable is transmitted to the anchor cable force measuring device through the first force transmission plate and the second force transmission plate, and then the tension, the tension or the load of the anchor cable are detected through the anchor cable force measuring device, and the actual tension value, the prestress loss condition and the change of the anchoring force of the anchor cable are obtained, and the bearing capacity of the anchor cable and the stress state of the anchoring structure are reflected through the above data, so as to evaluate the support of the anchor cable to the ore body and ensure the safety and reliability of the mining of the ore body. In addition, the first force transmission plate and the second force transmission plate not only can transmit the stress condition of the anchor cable to the anchor cable force measuring device in time, but also can support and clamp the anchor cable force measuring device, so as to improve the stability of the operation of the anchor cable force measuring device. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 The structural schematic diagram of the anchor cable support monitoring device provided by an embodiment of the application;

[0025] Figure 2 The structural schematic diagram of the anchor cable support monitoring device provided by another embodiment of the application;

[0026] Figure 3 The structural schematic diagram of the first force transmission plate provided by an embodiment of the application, and the lower clamping groove is opened on the first force transmission plate;

[0027] Figure 4 The structural schematic diagram of the second force transmission plate provided by an embodiment of the application, and the upper clamping groove is opened on the second force transmission plate.

[0028] In the figure: 100, anchor pad; 101, first through hole; 200, first force transmission plate; 201, lower clamping groove; 300, anchor cable force measuring device; 301, upper clamping block; 302, lower clamping block; 400, second force transmission plate; 401, upper clamping groove; 500, anchor cable hole; 600, anchor cable; 700, tensioning device; 800, limiting plate. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application is described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor also belong to the scope of protection of the present application.

[0030] Reference Figures 1 to 4 The present application provides an anchor cable support monitoring device, comprising: anchor pad 100, first force transmission plate 200, anchor cable force measuring device 300 and second force transmission plate 400 arranged together from top to bottom; wherein the anchor pad 100, the first force transmission plate 200, the anchor cable force measuring device 300 and the second force transmission plate 400 can be fixedly connected together by welding or the like, and the connection mode between the above components can be selected according to the actual situation, and the present application does not make further limitation on the connection mode of the above components.

[0031] The anchor pad 100 is installed in the anchor cable hole 500 by anchor agent, and the anchor cable hole 500 is opened on the ore body roof; wherein the anchor pad 100 is mainly used for transmitting and dispersing stress, and plays a role in fixing the first force transmission plate 200, the anchor cable force measuring device 300 and the second force transmission plate 400, thereby improving the stability of the detection process of the anchor cable force measuring device 300.

[0032] Among them, the anchor pad 100, the first force transmission plate 200, the anchor cable force measuring device 300 and the second force transmission plate 400 are all provided with first through holes 101, and a plurality of first through holes 101 share a common center.

[0033] The anchor cable 600, the anchoring section of the anchor cable 600 is sequentially threaded through a plurality of first through holes 101 from bottom to top and extends into the anchor cable hole 500 and is fixed by an anchoring member, the lower surface of the second force transmission plate 400 is provided with a tensioning device 700 for keeping the anchor cable 600 in a tensioned state; wherein the tensioning device 700 can be a pneumatic anchor cable tensioning tool, a manual anchor cable tensioning tool, an electric anchor cable tensioning tool, a hydraulic anchor cable tensioning device, an anchor cable tensioning instrument and other types of tensioning devices (for example: a heavy hammer tensioning device, a swing type movable supporting mechanism and an anchor cable guide wheel, etc.), the tensioning device 700 is specifically determined according to factors such as construction environment, anchor cable diameter and prestress requirement, and the present application does not make further limitation on it. In addition, the anchoring member can be an expansion bolt, a mechanical anchoring member, a welded anchoring member, a bolt anchoring member, etc., which can be specifically set according to actual needs, and the present application does not make specific limitation on it. The anchor cable force measuring device 300 is used for measuring the stress condition of the anchor cable 600 and reflecting the working state of the anchor cable 600 and the supporting effect of the anchor cable 600 on the ore body according to the stress condition of the anchor cable 600, and the purpose is to ensure the safety and reliability of the ore body mining.

[0034] The anchor cable supporting monitoring device provided by the present application, by opening the anchor cable hole 500 on the ore body roof and installing the anchor backing plate 100 in the anchor cable hole 500 through the anchoring agent, and sequentially installing the first force transmission plate 200, the anchor cable force measuring device 300 and the second force transmission plate 400 on the lower surface of the anchor backing plate 100 from top to bottom, since the first through holes 101 are opened on the anchor backing plate 100, the first force transmission plate 200, the anchor cable force measuring device 300 and the second force transmission plate 400, the anchoring section of the anchor cable is sequentially threaded through a plurality of first through holes 101 from bottom to top and extends into the anchor cable hole 500 and is fixed by an anchoring member, the anchor cable 600 is tensioned by the tensioning device 700, and in the process of the stress of the anchor cable 600, the prestress of the anchor cable 600 is transmitted to the anchor cable force measuring device 300 through the first force transmission plate 200 and the second force transmission plate 400, and then the tension, the load or the like of the anchor cable 600 is detected by the anchor cable force measuring device 300, and the actual tension value, the prestress loss condition and the change of the anchoring force of the anchor cable 600 are obtained, and the bearing performance of the anchor cable 600 and the stress state of the anchoring structure are reflected through the above data, so as to evaluate the supporting condition of the anchor cable 600 on the ore body, and ensure the safety and reliability of the ore body mining. In addition, the first force transmission plate 200 and the second force transmission plate 400 not only can timely transmit the stress condition of the anchor cable 600 to the anchor cable force measuring device 300, but also can support and clamp the anchor cable force measuring device 300, thereby improving the stability of the operation of the anchor cable force measuring device 300.

[0035] In some embodiments, reference is made to Figure 3 and Figure 4The lower surface of the first force transmission plate 200 in the application is provided with a lower clamping groove 201 around the first through hole 101 thereon, and the upper surface of the second force transmission plate 400 is provided with an upper clamping groove 401 around the first through hole 101 thereon; wherein the first force transmission plate 200 and the second force transmission plate 400 are not only used for transmitting the stress of the anchor cable 600 to the anchor cable force measuring device 300, but also used for supporting the anchor cable force measuring device 300, so as to improve the stability of the anchor cable force measuring device 300 in the running process. In addition, the anchor cable force measuring device 300 is provided with an upper clamping block 301 and a lower clamping block 302 which are matched with the lower clamping groove 201 and the upper clamping groove 401 respectively.

[0036] In the above embodiment, the upper clamping block 301 is clamped in the lower clamping groove 201, and the lower clamping block 302 is clamped in the upper clamping groove 401, so as to achieve the purpose of clamping the anchor cable force measuring device 300 and the first force transmission plate 200 and the second force transmission plate 400 tightly, and the depth of the upper clamping groove 401 and the lower clamping groove 201 can determine the fastening degree of the clamping of the lower clamping block 302 and the upper clamping block 301 respectively, and the depth of the upper clamping groove 401 and the lower clamping groove 201 can be set according to actual needs, and the application does not make specific limitation here.

[0037] In some embodiments, referring to Figures 1 to 4 The upper surface of the second force transmission plate 400 in the application is provided with a plurality of limiting plates 800 which are arranged equidistantly around the anchor cable force measuring device 300, and the top end of each limiting plate 800 is arranged on the lower surface of the first force transmission plate 200.

[0038] In the above embodiment, since the anchor cable force measuring device 300 has a certain volume, weight and height, in order to ensure the stability of the anchor cable force measuring device 300 in the running process, the circumferential side of the anchor cable force measuring device 300 is supported and limited by the plurality of limiting plates 800 which are arranged on the upper surface of the second force transmission plate 400 around the anchor cable force measuring device 300, further improving the overall stability of the anchor cable force measuring device 300 in the running process. In addition, the top end and the bottom end of each limiting plate 800 are respectively welded or clamped with the lower surface of the first force transmission plate 200 and the upper surface of the second force transmission plate 400, and the connection mode of the limiting plate 800 and the first force transmission plate 200 and the second force transmission plate 400 can be set according to actual needs, and the application does not make specific limitation here.

[0039] In some embodiments, the first force transmission plate 200 and the second force transmission plate 400 in the application are both cast iron or steel materials with high strength.

[0040] In the above embodiment, the cast iron or steel with high strength has excellent tensile strength and corrosion resistance, can withstand the high prestress transmitted by the anchor cable 600, and can uniformly distribute stress when stressed to avoid damage caused by local stress concentration. Therefore, the first force transmission plate 200 and the second force transmission plate 400 made of high-strength cast iron or steel material can more efficiently transmit the prestress of the anchor cable 600 to the anchor cable force measuring device 300, so that the anchor cable force measuring device 300 can quickly and accurately detect the tension, tension or load of the anchor cable 600 for detection and obtain the actual tension value of the anchor cable 600, the prestress loss condition and the change of the anchoring force, etc. The data reflects the bearing capacity of the anchor cable 600 and the stress state of the anchoring structure, so as to evaluate the support of the anchor cable 600 to the ore body and ensure the safety and reliability of the ore body mining.

[0041] In some embodiments, the lower surface of the first force transmission plate 200, the upper surface of the second force transmission plate 400, and the upper and lower surfaces of the anchor cable force measuring device 300 are all provided with a smooth layer; wherein the smooth layer can ensure that the contact surface between the anchor cable force measuring device 300 and the first force transmission plate 200 and the second force transmission plate 400 is smooth, thereby reducing the measurement error of the anchor cable force measuring device 300 and improving the measurement accuracy and reliability. In addition, the smooth layer can be a polyurethane coating, a photosensitive resin, etc., which can be selected according to actual needs, and the specific material of the smooth layer is not limited further herein.

[0042] In addition, the thicknesses of the plurality of smooth layers are consistent and parallel to each other, which ensures that the anchor cable force measuring device 300 and the first force transmission plate 200 and the second force transmission plate 400 are in close contact, so that the stress of the anchor cable can be quickly transmitted to the anchor cable force measuring device 300 through the first force transmission plate 200 and the second force transmission plate 400, and the anchor cable force measuring device 300 can quickly detect the stress of the anchor cable 600.

[0043] In some embodiments, the anchor mat 100 in the present application is made of a 45 steel or Q355B steel plate with a predetermined thickness; wherein the 45 steel plate and the Q355B steel both have high strength and toughness, which can effectively avoid fracture or deformation and ensure the stability and safety of the anchor mat 100 during use. In addition, the 45 steel and the Q355B steel plate are common industrial materials, which are relatively low in price and easy to process and weld. This not only reduces the manufacturing cost of the anchor mat 100, but also improves the production efficiency.

[0044] In addition, the preset thickness is greater than 32 mm. Among them, the increase of the thickness of the anchor pad 100 can significantly increase the maximum tensile stress of the anchoring structure, and the maximum tensile stress of the anchoring structure increases more and more with the increase of the thickness of the anchor pad 100, that is, the larger the thickness of the anchor pad 100, the better the anchoring force can be borne, and the safety of the anchoring structure is ensured. The thickness of the anchor pad 100 is greater than 32 mm, which not only meets the basic requirements of the construction specification, but also meets the higher demand of the actual engineering on the anchoring effect and the safety of the structure.

[0045] In some embodiments, the anchoring agent in the present application is made of high molecular resin material. Because the high molecular resin material has excellent bonding performance, fast curing and high strength, durability and adaptability, convenient construction and economy, mature technology and wide application, environmental protection and safety and other advantages, the anchoring agent made of high molecular resin material can improve the stability of the anchor cable 600, the anchor pad 100 and other processes of supporting the ore body, thereby improving the safety of the ore body mining. The high molecular resin material can be polyethylene, polyvinyl chloride, epoxy resin, etc., which can be selected according to actual needs, and the present application does not make specific limitation here.

[0046] In some embodiments, the anchor cable 600 in the present application is made of a plurality of steel strands with a diameter of 19.5 mm to 23.5 mm.

[0047] In the above embodiments, the anchor cable 600 made of a plurality of steel strands can improve the ductility and fatigue resistance of the anchor cable 600, and the diameter of the anchor cable 600 can affect the tensile strength and bearing capacity of the anchor cable 600. The smaller the tensile strength of the anchor cable 600, the lower the service life of the anchor cable 600, thereby reducing the safety of the anchor cable 600 in the process of supporting the ore body. Therefore, the diameter of the plurality of steel strands used to make the anchor cable is between 19.5 mm and 23.5 mm, so that the anchor cable 600 can better support the ore body, thereby improving the safety of the anchor cable 600 supporting the ore body. In addition, the number of steel strands included in each anchor cable 600 can be set according to the actual construction situation, and the present application does not make specific limitation here.

[0048] In some embodiments, the anchor cable force measuring device 300 in the present application is perpendicular to the axis of the anchor cable hole 500, and the inclination is less than 0.5°, and the eccentricity is less than 5 mm.

[0049] In the above embodiments, the installation position of the anchor cable force measuring device 300 directly affects the stress of the anchor cable force measuring device 300. If the anchor cable force measuring device 300 is not perpendicular to the axis of the anchor cable hole 500 or has an inclination or eccentricity, it will cause uneven stress of the anchor cable force measuring device 300, thereby affecting the accuracy of the measurement results of the anchor cable force measuring device 300. For example, too large inclination or eccentricity of the anchor cable force measuring device 300 can cause the anchor cable force measuring device 300 or the anchor to slip, even cause the anchoring system to be unstable, and in severe cases, the anchor cable can be sheared. Therefore, during the installation of the anchor cable force measuring device 300, its inclination and eccentricity have certain requirements, and the anchor cable force measuring device 300 in the present application is perpendicular to the axis of the anchor cable hole 500, and the inclination is less than 0.5° and the eccentricity is less than 5mm, which not only ensures the uniform stress of the anchor cable force measuring device 300, reduces the influence of eccentric load, and ensures the consistent stress direction of the anchor cable 600, but also avoids the instability of the anchor cable force measuring device 300 and the deviation of the measured value, thereby improving the construction efficiency and safety.

[0050] In some embodiments, the anchor cable force measuring device 300 in the present application is an MCJ-200 series vibrating wire anchor cable force measuring device.

[0051] In the above embodiments, since the MCJ-200 series vibrating wire anchor cable force measuring device adopts vibrating wire sensing technology, it has high precision and advancement, can meet the strict requirements of measurement accuracy in engineering monitoring, its resolution reaches ≤0.08%FS, and the comprehensive error is ≤2.0%FS, which ensures the reliability of the measurement results. Its range can reach more than 1000 tons, which can meet the demand of large load measurement in engineering. At the same time, it has a wide applicable temperature range (-25℃-50℃), and adopts all stainless steel structure to have excellent corrosion resistance and mechanical strength, and can work normally in harsh, humid and other environments. Therefore, the use of the MCJ-200 series vibrating wire anchor cable force measuring device in the present application not only can accurately monitor the prestress state and load change of the anchor cable 600 to master the support of the anchor cable 600 to the ore body, but also ensures the safety of the ore body mining.

[0052] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An anchor line support monitoring device, characterized in that, The utility model relates to a kind of mine anchoring force measuring device, including: Anchor pad (100), first force transmission plate (200), anchor cable force measuring device (300) and second force transmission plate (400) are sequentially arranged from top to bottom together; The anchor pad (100) is installed in anchor cable hole (500) by anchoring agent, and the anchor cable hole (500) is opened on the roof of ore body; Wherein, the anchor pad (100), the first force transmission plate (200), the anchor cable force measuring device (300), the second force transmission plate (400) are all opened with first through-hole (101), and multiple first through-hole (101) share the center; Anchor cable (600), the anchoring section of the anchor cable (600) is sequentially penetrated from bottom to top multiple first through-hole (101) and extends into the anchor cable hole (500) and is fixed by anchoring piece, and the lower surface of the second force transmission plate (400) is provided with tensioning device (700) to make the anchor cable (600) in tension state; The anchor cable force measuring device (300) is used for measuring the stress condition of the anchor cable (600) and reflecting the working state of the anchor cable (600) and the supporting effect of the anchor cable (600) to the ore body according to the stress condition of the anchor cable (600).

2. An anchor line monitoring device according to claim 1, characterised in that, The lower surface of the first force transmission plate (200) is opened with lower clamping groove (201) around the first through-hole (101) thereon, and the upper surface of the second force transmission plate (400) is opened with upper clamping groove (401) around the first through-hole (101) thereon; The anchor cable force measuring device (300) is provided with upper clamping block (301) and lower clamping block (302) matched with the lower clamping groove (201) and the upper clamping groove (401) respectively.

3. An anchor line monitoring device according to claim 2, characterised in that, The upper surface of the second force transmission plate (400) is provided with multiple limiting plates (800) around the anchor cable force measuring device (300) at equal intervals, and the top end of multiple limiting plates (800) is arranged on the lower surface of the first force transmission plate (200).

4. An anchor line monitoring device according to claim 1, characterised in that, The first force transmission plate (200) and the second force transmission plate (400) are both cast iron or steel material with high strength.

5. The monitoring device of claim 1, wherein, The lower surface of the first force transmission plate (200), the upper surface of the second force transmission plate (400), and the upper surface and lower surface of the anchor cable force measuring device (300) are all provided with smooth layer; The thickness of multiple smooth layers is consistent and parallel to each other.

6. An anchor line monitoring device according to claim 1, characterised in that, The anchor pad (100) is made of 45# steel or Q355B steel plate with preset thickness; The preset thickness is greater than 32 mm.

7. An anchor line monitoring device according to claim 1, characterised in that, The anchoring agent is made of high molecular resin material.

8. An anchor line monitoring device according to claim 1, characterised in that, The anchor cable (600) is made of multiple steel strands with diameter of 19.5 mm to 23.5 mm.

9. An anchor line monitoring device according to claim 1, characterised in that, The anchor cable force measuring device (300) is perpendicular to the axis of the anchor cable hole (500), and its inclination is less than 0.5°, and the eccentricity is less than 5 mm.

10. An anchor line monitoring device according to any one of claims 1 to 9, characterised in that, The anchor cable force measuring device (300) is MCJ-200 series vibrating wire type anchor cable force measuring device.

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