Device for checking and repairing penetration of any blast hole in blasting construction

Abstract

The invention relates to an inspection and repair device for penetration of any blast hole in blasting construction. The inspection and repair device comprises an inspection and repair device body and a detachable combined straight rod device. The checking and repairing device comprises an inner metal sleeve and an arc-shaped metal cutting plate, and the arc-shaped metal cutting plate is fixedly arranged on the outer side of the inner metal sleeve through an elastic element; the detachable combined straight rod device comprises a supporting rod, a connecting rod and an inspection rod which are sequentially and fixedly arranged from bottom to top, the supporting rod and the connecting rod are connected and fixed through a combiner, the connecting rod and the inspection rod are connected and fixed through an inner metal sleeve, the lower portion of the supporting rod is sleeved with a soil retaining plate, and the lower portion of the soil retaining plate is sleeved with an outer metal sleeve. An annular handle is arranged at the lower end of the supporting rod. According to the method, the internal cavity of the blast hole can be completely covered, the checking and repairing accuracy is greatly improved, and the method has very high guiding significance on actual engineering design and is safe, reliable and good in effect.

Description

Technical Field

[0001] The present invention relates to the technical field of mining engineering geology, and more specifically, to a device for inspecting and repairing the penetration of any blast hole during blasting construction. Background Art

[0002] Engineering blasting technology originated from early military applications. However, over time, it has gradually shifted to civilian fields and demonstrated great potential in economic construction. After decades of continuous exploration and innovation, blasting technology has formed a complete theoretical system and technical system, enabling precise design and construction according to different engineering requirements. In mining engineering, the importance of blasting technology is particularly prominent. It not only improves production efficiency but also reduces labor intensity, providing strong support for the sustainable development of mining enterprises and playing an important role in roadway tunneling, chamber construction, and ore and rock fragmentation.

[0003] The degree of blast hole penetration has an important impact in fields such as mining engineering and tunnel engineering. The degree of blast hole penetration directly affects the blasting effect. If the blast hole is not fully penetrated, the explosive energy may not be fully released, resulting in poor blasting effects, insufficient rock fragmentation, and even the situation where large rocks remain unbroken. This not only increases the difficulty of subsequent processing but may also affect the project progress and safety. At the same time, in projects such as roadway tunneling, the degree of blast hole penetration directly affects the tunneling speed. If the blast hole has good penetration, the explosive energy can be fully released, and the fragmented rock has a moderate size, which is convenient for loading and transportation, thus increasing the tunneling speed. On the contrary, if the blast hole has poor penetration, the fragmented rock has a large size and a large quantity, which will increase the difficulty of loading and transportation and reduce the tunneling speed. In addition, the degree of blast hole penetration is also related to project quality and safety. If the blast hole is not fully penetrated, it may cause the shock wave and flying stones generated by blasting to pose a threat to the surrounding environment and personnel. In addition, the uneven size of the fragmented rock may also affect the stability and support effect of the roadway, thus increasing the safety risk of the project.

[0004] During the process of drilling blast holes, due to complex geological conditions and human factors, etc., the penetrability of blast holes may be poor. For example, geological conditions such as fault fracture zones, and differences in rock properties such as the hardness and joint development of different rocks will affect the penetration effect during drilling; the proficiency of drilling techniques, the performance of drilling equipment, and the operating specifications during the drilling process are also important factors affecting the penetrability of blast holes. In addition, due to different mineral compositions, bedrock properties, and geological structures in different mines, different blasting methods need to be set according to the specific requirements of the mines. Therefore, the depths and diameters of blasting blast holes are inconsistent, and even the blast hole sizes at different positions in the same mine are different. However, the current measuring devices for the penetrability of blast holes can only conduct a simple inspection of the penetration degree of blast holes, and cannot inspect the penetration degrees of blast holes with different diameters and depths. Moreover, the existing inspection devices cannot fully cover the interior of blast holes, resulting in easy omission of the inspection of the penetration degree of blast holes. In addition, they do not have the function of repairing the penetration degree of blast holes. Therefore, it is necessary to invent a device and method suitable for inspecting and repairing the penetration of any blast hole to meet the actual engineering requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a device for inspecting and repairing the penetration of any blast hole in blasting construction, which can completely cover the inner cavity of the blast hole and greatly improve the accuracy of inspection and repair.

[0006] The technical solution adopted by the present invention to solve its technical problems is: to construct a device for inspecting and repairing the penetration of any blast hole in blasting construction, including an inspection and repair device and a detachable combined straight rod device;

[0007] The inspection and repair device includes an inner metal sleeve and an arc-shaped metal cutting plate, and the arc-shaped metal cutting plate is fixedly arranged on the outer side of the inner metal sleeve through an elastic element;

[0008] The detachable combined straight rod device includes a support rod, a connecting rod, and an inspection rod fixedly arranged in sequence from bottom to top. The support rod and the connecting rod are connected and fixed through a combinator. The connecting rod and the inspection rod are connected and fixed through the inner metal sleeve. A retaining plate is sleeved on the lower part of the support rod, and a circular handle is arranged at the lower end of the support rod.

[0009] According to the above solution, vertical threaded holes of the same size are internally provided at the centers of the upper and lower ends of the inner metal sleeve. Four square grooves are arranged on the outer side of the upper part of the inner metal sleeve, and four square grooves are arranged on the outer side of the lower part of the inner metal sleeve. The four square grooves in the upper part and the four square grooves in the lower part are both on a horizontal circular line and are evenly arranged. Two threaded holes are arranged in each square groove.

[0010] According to the above solution, the elastic element includes an upper cushion block, a rigid spring and a lower cushion block. The upper cushion block and the lower cushion block have the same size and the bottom surface is square. Two through threaded holes are provided on both the upper and lower sides of the upper cushion block and the lower cushion block. The upper cushion block, the lower cushion block match the square groove and are fixedly connected by screws.

[0011] According to the above solution, the outer metal cutting plate includes four pieces and is an arc-shaped metal plate, and the upper side is an inclined cone shape; two square grooves are provided at the central axis position of the outer metal cutting plate. The two square grooves are vertically arranged and parallel to the central axis of the outer metal cutting plate. Two through threaded holes are evenly arranged at the bottom of the square groove. The bottom of the square groove matches the upper cushion block and is fixedly connected by screws.

[0012] According to the above solution, vertical threaded holes are provided at the centers of both the upper and lower ends of the combiner.

[0013] According to the above solution, threads are provided at both the upper and lower ends of the support rod.

[0014] According to the above solution, threads are built in on the upper bottom surface of the retaining plate, and the retaining plate is fixedly connected to the lower part of the support rod.

[0015] According to the above solution, threads are provided on the inner side of the annular handle, and the annular handle is fixedly connected to the support rod.

[0016] According to the above solution, threads are provided at both the upper and lower ends of the connecting rod, and the connecting rod is fixed to the support rod through the combiner.

[0017] According to the above solution, threads are provided at the lower end of the inspection rod, and the inspection rod is fixedly connected to the connecting rod through the inner metal sleeve.

[0018] Implementing the device for checking and repairing any blast hole penetration during blasting construction of the present invention has the following beneficial effects:

[0019] The present invention is provided with a checking and repairing device and a detachable straight rod combination device, which conforms to the actual situation of different blast hole depths and diameters in different mines. The support rod, inspection rod and different numbers of connecting rods assembled by oneself can be applicable to blast holes of different depths. The elastic element of the inspection and repair system can be applicable to the penetration situation of blast holes of different diameters for repair. It can completely cover the internal cavity of the blast hole, greatly improving the accuracy of inspection and repair, having high guiding significance for actual engineering design, and having the characteristics of safety, reliability and good effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0021] Figure 1It is a schematic structural diagram of the device for inspecting and repairing any blast hole penetration in the blasting construction of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the support rod of the present invention;

[0023] Figure 3 It is a top view of the support rod of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the connecting rod of the present invention;

[0025] Figure 5 It is a schematic structural diagram of the combiner of the present invention;

[0026] Figure 6 It is a schematic structural diagram of the retaining plate of the present invention;

[0027] Figure 7 It is a schematic structural diagram of the annular handle of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the inspection and repair device of the present invention;

[0029] Figure 9 It is a schematic structural diagram of the inner metal sleeve of the present invention;

[0030] Figure 10 It is a schematic structural diagram of the elastic element of the present invention;

[0031] Figure 11 It is a schematic structural diagram of the outer metal cutting plate of the present invention;

[0032] In the figure: 1. Support rod, 2. Connecting rod, 3. Inspection rod, 4. Combiner, 5. Retaining plate, 6. Annular handle, 7. Inspection and repair device, 7-1. Inner metal sleeve, 7-2. Elastic element, 7-3. No. II screw, 7-4. Outer metal cutting plate, A. Upper cushion block, B. Rigid spring, C. Lower cushion block, D1, D2, D3, D4, D5, D6, D7, D8, M, N, Square groove. Detailed implementation mode

[0033] For a clearer understanding of the technical features, purposes and effects of the present invention, the detailed implementation mode of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] Embodiment

[0035] As Figure 1 shown, an inspection and repair device for forming any blast hole penetration situation of the present invention includes a support rod 1, a connecting rod 2, an inspection rod 3, a combiner 4, a retaining plate 5, an annular handle 6 and an inspection and repair device 7.

[0036] As Figure 2As shown, the support rod 1 is a high-rigidity metal straight rod with a diameter of 40 mm and a length of 2000 mm. There is a thread with a length of 75 mm at the upper end of the support rod 1, and a thread with a length of 50 mm at the lower end of the support rod 1.

[0037] As Figure 3 shown, the connecting rod 2 is made of the same material as the support rod 1, with a diameter of 40 mm and a length of 1000 mm. Threads with a length of 75 mm are provided at both the upper and lower ends. The lower end of the connecting rod 2 is fixed to the upper end of the support rod 1 through the combinator 4.

[0038] As Figure 4 shown, the inspection rod 3 is made of the same material as the support rod 1, with a diameter of 40 mm and a length of 1000 mm. There is a thread with a length of 75 mm at the lower end. The lower end of the inspection rod 3 is fixed to the upper end of the connecting rod 2 through the inspection and repair device 7.

[0039] As Figure 5 shown, the combinator 4 is made of the same material as the support rod 1, with a height of 200 mm and an outer diameter of 100 mm. Vertical threaded holes of the same size are built in the centers of both the upper and lower ends, with a hole diameter of 40 mm and a length of 75 mm.

[0040] As Figure 6 shown, the retaining plate 5 is made of the same material as the support rod 1. The inner diameter of its upper bottom surface is 40 mm, and the inner diameter of its lower bottom surface is 500 mm. There is a thread built in the upper bottom surface of the retaining plate 5, with an inner ring diameter of 40 mm and an outer ring diameter of 200 mm. There is a thread in the inner ring of the retaining plate 5, and the retaining plate 5 is fixed to the lowest point of the thread at the lower end of the support rod 1.

[0041] As Figure 8 shown, the inspection and repair device 7 includes an inner metal sleeve 7-1, an elastic element 7-2, a No. II screw 7-3, and four outer metal cutting plates 7-4. The total length of the No. II screw 7-3 is 20 mm, the diameter of the threaded part is 3 mm, the diameter of the nut is 6 mm, and the height is 3 mm.

[0042] As Figure 9 shown, the inner metal sleeve 7-1 is made of the same material as the support rod 1, with a height of 200 mm and an outer diameter of 100 mm. Vertical threaded holes of the same size are built in the centers of both the upper and lower ends, with a hole diameter of 40 mm and a length of 75 mm; eight square grooves D1, D2, D3, D4, D5, D6, D7, D8 are evenly distributed on the outside of the inner metal sleeve 7-1. There are two threaded holes built in the bottom surface of each square groove, with a diameter of 3 mm; the eight square grooves have a length of 30 mm and a depth of 10 mm. They are arranged in two annular columns. The square grooves numbered D1, D2, D3, D4 are in the first column and are 50 mm from the bottom, and the square grooves numbered D5, D6, D7, D8 are in the second column and are 150 mm from the bottom.

[0043] As Figure 10 shown, the elastic element 7-2 includes an upper cushion block A, a rigid spring B, and a lower cushion block C. The materials of the upper cushion block A and the lower cushion block C are the same as those of the support rod 1; the upper cushion block A and the lower cushion block C have the same dimensions, with a square bottom surface, a length of 30 mm, and a height of 10 mm; both the upper and lower sides of the upper cushion block A and the lower cushion block C include two through-threaded holes, and the thread of the holes corresponds to the No. II screw 7-3, with a hole diameter of 3 mm and a depth of 17 mm. The upper cushion block A matches the square groove of the inner metal sleeve 7-1 and is fixed using the No. II screw 7-3.

[0044] As Figure 11 shown, the four outer metal cutting plates 7-4 are made of the same material as the support rod 1. They are arc-shaped metal plates with a height of 250 mm, and are tapered and inclined 50 mm from the upper side; at the central axis position of the outer metal cutting plate 7-1, there are two square grooves M and N with the same dimensions. The two square grooves have a length of 30 mm and a depth of 10 mm. The square groove M is 50 mm from the lower bottom surface, and the square groove N is 150 mm from the lower bottom surface; two through-threaded holes are evenly arranged at the bottom of the two-direction grooves. The thread of the holes corresponds to the No. II screw 7-3, with a hole diameter of 3 mm. At the bottommost part of the threaded hole, there is an embedded round hole with the same size as the nut of the No. II screw 7-3, with a depth of 3 mm and a diameter of 6 mm. The square groove of the outer metal cutting plate 7-4 matches the upper gasket C of the elastic element 7-2 and is fixed by the No. II screw 7-3.

[0045] The present invention also provides a manufacturing method for a device for inspecting and repairing any blast hole penetration during blasting construction, including the following steps:

[0046] Step 1: Fabrication and assembly of the inspection and repair device

[0047] 1-1): Fabrication of the inner metal sleeve 7-1. A metal cylinder is cast by a mold, and threaded holes with a diameter of 40 mm and a depth of 75 mm are respectively machined on the upper and lower sides of the metal cylinder using a No. I thread milling cutter. Eight square grooves D1, D2, D3, D4, D5, D6, D7, D8 with a depth of 10 mm and a length of 30 mm are turned on the outer side of the cylinder using a milling cutter, and threaded holes with a diameter of 3 mm are machined on both sides of the bottom of the square groove using a No. II thread milling cutter.

[0048] 1-2): Fabrication of the elastic element 7-2. Select a rigid spring B with a diameter of 20 mm. Use electric welding to weld the upper and lower ends of the spring to the square metal lower spacer A and upper spacer C. The bottom surface of the lower spacer A and upper spacer C is 30 mm long and 10 mm thick. Use a No. II thread milling cutter to machine threaded holes with a diameter of 3 mm in the area where the spring is connected to the upper and lower end spacers. Use a milling cutter to machine a round hole with a diameter of 3 mm on the upper spacer, which is the same size as the nut of the No. II screw; Cast a No. II screw 7-4 with a total length of 20 mm, a threaded diameter of 3 mm, a nut diameter of 6 mm, and a height of 3 mm using a mold.

[0049] 1-3): Fabrication of the outer metal cutting plate 7-4. Cast four metal plates with the same size and a height of 250 mm using a mold. Use a mold to grind one end of the metal plate into an inclined conical shape with a height of 50 mm. Use a milling machine to machine two square grooves M and N with a depth of 10 mm and a length of 30 mm on the inner side of each metal plate. Use a No. II thread milling cutter to machine threaded holes with a diameter of 3 mm that penetrate to the outside at the bottom of the square grooves on the inner side of the metal plate. Use a milling cutter to machine an embedded round hole with a diameter of 6 mm and a depth of 3 mm, which is the same size as the nut of the No. II screw 7-3, at the threaded hole on the outside of the metal plate.

[0050] 1-4): Assembly of the inspection and repair device. First, place the lower spacer A of the elastic element 7-2 in the groove of the inner metal sleeve 7-1. Use No. II screws 7-3 to fix the elastic element 7-2 and the inner metal sleeve 7-1 respectively through the threaded holes in the square grooves D1 on both sides of the lower spacer A and the outside of the inner metal sleeve 7-1. Operate in sequence to fix eight elastic elements to the metal sleeve. Then, snap the upper spacer C of the elastic element 7-2 into the square groove M on the inner side of the metal cutting plate 7-4 and use two No. II screws to fix it. Fix the four outer metal cutting plates 7-4 in sequence to assemble the inspection and repair device.

[0051] Step Two: Fabrication of the detachable combined straight rod device

[0052] 2-1): Fabrication of the support rod 1. Cast a cylindrical metal rod with a diameter of 40 mm and a height of 2000 mm using a mold. Use a milling machine to machine threads at the upper end of the metal rod and a small amount of threads at the lower end. The lengths of the threaded parts at the upper and lower ends are 75 mm and 50 mm respectively.

[0053] 2-2): Select a metal rod with the same diameter as the support rod 1 as the connecting rod 2, with a length of 1000 mm. Use a milling machine to machine threads at equal distances at the upper and lower ends of the connecting rod 2. The lengths of the threaded parts at the upper and lower ends are both 75 mm, and the thread parameters are the same as those of the support rod 1.

[0054] 2 - 3): Select a metal rod with the same diameter as the support rod 1 as the inspection rod 3, with a length of 1000 mm. Use a milling machine to turn a thread with a length of 75 mm on the lower side of the inspection rod 3. The thread parameters are the same as those of the support rod 1.

[0055] 2 - 4): Manufacture the combinator 4. Use a mold to cast a metal cylinder with a diameter of 100 mm and a height of 200 mm. Use a No. I thread milling cutter to process threaded holes on the upper and lower sides of the metal cylinder respectively. The depths of the upper and lower side holes are the same, both 75 mm, and the diameter is 40 mm. The hole thread parameters are the same as those of the support rod 1.

[0056] 2 - 5): Manufacture the retaining plate 5. Use a mold to cast a frustum - shaped metal ring sleeve and a metal ring. The inner diameter of the lower bottom surface of the frustum - shaped metal ring sleeve is 500 mm, and the inner diameter of the upper bottom surface is 40 mm. The diameter of the metal ring is the same as that of the upper bottom surface of the frustum, which is 40 mm. Use a lathe to turn a thread inside the metal ring. The thread parameters match the lower - side thread of the support rod 1. Use a welding tool to weld the frustum and the threaded metal ring.

[0057] 2 - 6): Manufacture the annular handle 6. Use a mold to cast an annular handle with an inner ring and an outer ring. Its inner - ring diameter is 40 mm, and the outer - ring diameter is 200 mm. Use a lathe to turn a thread on the inner side of the inner ring. The thread parameters match the lower - side thread of the support rod 1.

[0058] Step Three: Installation of the support rod and the connecting rod:

[0059] 3 - 1) Select the number of connecting rods 2 used according to the actual measured depth of the blast hole.

[0060] 3 - 2): Pass the support rod 1 through the upper bottom surface of the retaining plate 5 and contact the lower bottom surface of the retaining plate. Then rotate the retaining plate 5 to fully screw the lower - bottom thread into the lower - side thread of the support rod 1 to fix the retaining plate 5 and the support rod 1.

[0061] 3 - 3): Fully screw the annular handle 6 into the lowermost thread of the support rod 1 fixed to the retaining plate 5 to fix the annular handle 6 and the support rod 1.

[0062] 3 - 4): Fully screw the threaded part at the upper end of the support rod 1 into the lower - end threaded hole of the combinator 4 to fix the upper end of the support rod 1 and the combinator 4. Then, in the same way, fix the connecting rod 2 to the upper end of the combinator 1. Repeat the operation to connect the remaining connecting rods until its length meets the depth requirement of the measured blast hole.

[0063] Step 4: Check the installation of the repair device and the straight rod connection system: Fully screw the threaded part at the upper end of the last connecting rod 2 into the threaded hole at the lower end of the inner metal sleeve 7-1 of the self-checking and repair device 7, and fully screw the threaded part at the lower end of the inspection rod 3 into the threaded hole at the upper end of the inner metal sleeve 7-1 of the self-checking and repair device 7 to fix the inspection rod 3 to the self-checking and repair device 7, finally forming an inspection and repair device for any perforated blast hole situation.

[0064] Step 5: Check and repair the perforated blast hole situation. Assemble the inspection and repair device for any perforated blast hole situation and check whether it can reach the bottom of the blast hole. Slowly pull the device back and forth, and use four annular cutting metal plates to avoid rubbing against the blast hole to cut sand and waste rock, so that the blast hole is fully penetrated.

[0065] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. All of these are within the protection scope of the present invention.

Claims

1. An inspection and repair device for penetrating any blast hole in blasting construction, characterized in that, It includes an inspection and repair device and a detachable combined straight rod device; The inspection and repair device includes an inner metal sleeve and an arc-shaped metal cutting plate, and the arc-shaped metal cutting plate is fixedly arranged outside the inner metal sleeve through an elastic element; The detachable combined straight rod device includes a support rod, a connecting rod, and an inspection rod fixedly arranged in sequence from bottom to top. The support rod and the connecting rod are fixedly connected through a combinator. The connecting rod and the inspection rod are fixedly connected through the inner metal sleeve. A retaining plate is sleeved on the lower part of the support rod, and a circular handle is arranged at the lower end of the support rod.

2. The device for checking and repairing the penetration of any blast hole in blasting construction according to claim 1, wherein Vertical threaded holes of the same size are internally provided at the centers of the upper and lower ends of the inner metal sleeve. Four square grooves are arranged on the outer side of the upper part of the inner metal sleeve, and four square grooves are arranged on the outer side of the lower part of the inner metal sleeve. The four square grooves in the upper part and the four square grooves in the lower part are on the same horizontal circular line and are evenly arranged. Two threaded holes are arranged in each of the square grooves.

3. The device for checking and repairing the penetration of any blast hole in blasting construction according to claim 2, wherein The elastic element includes an upper cushion block, a rigid spring, and a lower cushion block. The upper cushion block and the lower cushion block have the same size and the bottom surface is square. Two through threaded holes are provided on both the upper and lower sides of the upper cushion block and the lower cushion block. The upper cushion block and the lower cushion block match the square grooves and are fixedly connected by screws.

4. The device for checking and repairing the penetration of any blast hole in blasting construction according to claim 3, characterized in that, The outer metal cutting plate includes four pieces and is an arc-shaped metal plate, and the upper side is an inclined cone shape; two square grooves are arranged at the central axis position of the outer metal cutting plate. The two square grooves are vertically arranged and parallel to the central axis of the outer metal cutting plate. Two through threaded holes are evenly arranged at the bottom of the square grooves. The bottom of the square grooves matches the upper cushion block and is fixedly connected by screws.

5. The device for inspecting and repairing any blast hole penetration in blasting construction according to claim 1, wherein Vertical threaded holes are provided at the centers of the upper and lower ends of the combinator.

6. The device for checking and repairing the penetration of any blast hole in blasting construction according to claim 5, characterized in that, Threads are provided at both the upper and lower ends of the support rod.

7. The device for checking and repairing the penetration of any blast hole in blasting construction according to claim 6, characterized in that Threads are internally provided on the upper bottom surface of the retaining plate, and the retaining plate is fixedly connected to the lower part of the support rod.

8. The device for checking and repairing the penetration of any blast hole in blasting construction according to claim 6, characterized in that, Threads are provided on the inner side of the circular handle, and the circular handle is fixedly connected to the support rod.

9. The device for checking and repairing any blast hole penetration during blasting construction according to claim 1, wherein Threads are provided at both the upper and lower ends of the connecting rod, and the connecting rod is fixedly connected to the support rod through the combinator.

10. The device for checking and repairing any blast hole penetration in blasting construction according to claim 1, wherein, Threads are provided at the lower end of the inspection rod, and the inspection rod is fixedly connected to the connecting rod through the inner metal sleeve.

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