A blasting hole wall repairing and protecting device

Abstract

The utility model provides a kind of blast hole hole wall repair protection device, including protection main body, protection main body is connected with the one end of winding rope belt, scale line is set on winding rope belt, and its other end is connected on winding assembly, by winding assembly slack release;Repair slurry buffer cavity is set in the top of protection main body, the lower end lateral wall of repair slurry buffer cavity is provided with slurry outlet, repair slurry buffer cavity is connected with repair slurry filling piece, and repair slurry filling piece is used to guide repair slurry into repair buffer cavity;Inflating passage is set on protection main body, inflating passage extends to the top of protection main body and is communicated with gas source device by inflating pipe;Protection main body is wrapped with inflating air bag outside, inflating air bag is communicated with inflating passage, and inflating air bag is located at the bottom of repair slurry buffer cavity.The device is filled in the mode of hole or crack in the inner wall of blast hole to repair, so that the inner wall of blast hole does not exist hole or crack as far as possible, to reduce explosive dosage, and make explosion effect better.

Description

Technical Field

[0001] This utility model relates to the field of blasting construction, and in particular to a device for repairing and protecting the borehole wall of blasting blasting. Background Technology

[0002] During blasting operations, the location is first determined, then a drilling rig is used to drill holes to obtain the blast holes. Detonators and explosives are then placed inside the holes. However, we know that the area where blast holes are located in open-pit areas may contain cavities, holes, or fissures. If cavities or holes exist, detonators or explosives may be placed inside them, leading to unsatisfactory blasting or requiring a large amount of detonators or explosives for filling. Explosives, in particular, are more likely to enter cavities, holes, or even fissures than detonators. Therefore, when using explosives for blasting, a larger amount of filling material is needed compared to detonators. To address this, after the blast holes are drilled, detection equipment is used to check for cavities, holes, or fissures within the holes to reduce explosive consumption. Among them, blast holes with large karst caves or holes will be discarded. For blast holes with small karst caves, holes or cracks, a reasonable charge arrangement method will be selected according to the detected hole area to avoid explosives scattering in the karst cave. However, even with a reasonable charge arrangement, there may still be cases where explosives enter the hole, resulting in waste and incomplete explosion.

[0003] In response to this, for operations that use explosives to fill blast holes for detonation, based on the small holes or cracks that exist in the blast holes, a blast hole wall repair and protection device is proposed to be designed. This device aims to fill and repair the holes or cracks in the inner wall of the blast hole to minimize the number of holes or cracks, thereby reducing the amount of explosives used and improving the detonation effect. Utility Model Content

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A protective device for repairing the wall of a blasting borehole includes a protective body connected to one end of a winding rope with graduated lines, the other end of which is connected to a winding assembly for release. A repair slurry buffer chamber is located at the top of the protective body, with a slurry outlet on its lower sidewall. The buffer chamber is connected to a repair slurry filler for introducing the repair slurry into the buffer chamber. An inflation channel extends to the top of the protective body and is connected to an air source device via an inflation pipe. An inflatable airbag surrounds the protective body, connected to the inflation channel. The airbag is located at the bottom of the repair slurry buffer chamber, with its inflated outer wall dimension larger than that of the buffer chamber, and its inflated shape forming a stepped structure. The outer wall dimension of the upper section of the airbag is smaller than that of the lower section.

[0006] Preferably, the slurry outlet surrounds the entire protective body.

[0007] Preferably, the upper end of the inflatable airbag has an inclined slope. When the airbag is inflated, the distance between the upper edge of the inclined slope and the center line of the airbag is less than the distance between the outlet and the center line of the airbag, and also less than the distance between the lower edge of the inclined slope and the center line of the airbag.

[0008] Preferably, the repair slurry filling component includes a storage tank, a discharge cover, and a cover opening and closing drive. The storage tank and the repair slurry buffer chamber are integrated, with an inlet at the top. The discharge cover is slidably fitted onto the outer wall of the storage tank and connected to the cover opening and closing drive. The cover opening and closing drive is installed on the storage tank and is used to drive the discharge cover to slide to close or open the slurry outlet. The guide wire of the cover opening and closing drive is set on the wound rope, and one end of it, which is not connected to the cover opening and closing drive, is connected to the control box.

[0009] Preferably, the cover opening and closing drive is an electric push rod, and the drive end of the electric push rod is connected to the discharge cover through a connecting rod.

[0010] Preferably, the storage hopper has an annular barrel structure, and both the storage hopper and the inflatable airbag are detachably connected to the protective body. The guide wire of the cover opening and closing drive component is detachably connected to the guide wire on the winding rope, and the inflatable airbag is detachably connected to the inflation channel through a connecting air pipe.

[0011] Preferably, the storage hopper is detachably connected to the protective body via threads.

[0012] Preferably, the inflatable airbag includes an annular cylinder and a body, the body being fitted onto the outer wall of the annular cylinder, and a protective body being fitted onto the annular cylinder and detachably connected to the protective body via threads.

[0013] Preferably, the annular cylinder is disposed at the upper part of the bladder body.

[0014] Preferably, the repair slurry filling component includes a repair slurry storage tank, a pump body, and a delivery pipe. The inlet of the pump body is connected to the repair slurry storage tank, and the outlet of the pump body is connected to the repair slurry buffer chamber through the delivery pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention lowers the protective body using a winding assembly to the height of the hole or crack. Then, an inflatable airbag on the protective body inflates and presses against the inner wall of the borehole, thus securing the protective body. When the airbag inflates, its lower section contacts the inner wall of the borehole, while its upper section does not, creating a space between the upper section and the inner wall. The hole or crack in the borehole is located within this space. When repair slurry flows from the slurry buffer into this space from top to bottom, the slurry can... Fill the holes or cracks with grout. Once the space is mostly filled, stop adding grout and allow it to stand for a period of time to solidify. Then, deflate the inflatable airbag to detach it from the annular repair surface formed by the inner wall of the borehole and the repair material. This way, the inner wall of the borehole in that space can form a complete wall without holes or cracks. After the entire protective body is pulled up and detached from the borehole, explosives are then added. The explosives can fall directly to the bottom of the borehole without entering the holes or cracks, avoiding waste of explosives and incomplete explosion, and improving the effectiveness of the explosion. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the present invention in use.

[0018] Figure 2 yes Figure 1 Enlarged view of point A in the middle; in the image, the repair slurry has not been released.

[0019] Figure 3 yes Figure 2 A schematic diagram of the cavity after the repair slurry has been filled and repaired.

[0020] Figure 4 yes Figure 3 A schematic diagram of the protective body pulling back after the inflated airbag is deflated.

[0021] Figure 5 This is a cross-sectional view of the protective body in the first embodiment of this utility model.

[0022] Figure 6 yes Figure 5 A schematic diagram of the three-dimensional structure, in which the slurry outlet is not open.

[0023] Figure 7 yes Figure 6 A schematic diagram of the structure when the slurry outlet is open.

[0024] Figure 8 yes Figure 5 Exploded view.

[0025] Figure 9 This is a cross-sectional view of the protective body in the second embodiment of this utility model.

[0026] Explanation of main component symbols

[0027] In the diagram: 1. Winding rope, 1.1. Winding drive, 1.2. Control box, 2. Air source device, 3. Inflation pipe, 4. Protective body, 5. Inflation channel, 5.1. Repair slurry buffer chamber, 6. Slurry outlet, 6.1. Inflatable airbag, 7. Annular cylinder, 7.1. Upper section, 7.2. Lower section, 7.3. Inclined slope, 7.4. Repair slurry filler, 8. Storage tank, 8.1. Inlet, 8.1.1. Outlet cover, 8.2. Cover opening and closing drive, 8.3. Connecting rod, 8.4. Conveying pipe, 8.5. Repair slurry surface, 9. Blast hole, 10. Hole or crack, 10.1.

[0028] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0029] Please see Figure 1-8 In a preferred embodiment of this utility model, a protective device for repairing the wall of a blasting borehole includes a protective body 5. One end of the protective body 5 is connected to a winding rope 1, which has scale lines (including scales and scale values) and the other end is connected to a winding assembly. The winding assembly is released by the winding assembly. The winding assembly specifically includes a winding frame, a winding cylinder 1.2 rotatably mounted on the winding frame, and a winding drive 1.1 that drives the winding cylinder 1.2 to rotate. In use, the winding assembly is installed on the ground around the blast hole 10. The winding rope 1 is wound around the winding cylinder 1.2. When the winding cylinder 1.2 is driven to rotate by the winding drive 1.1, it is wound up to pull back the protective body 5 or released to lower the protective body 5 into the blast hole 10. The depth of lowering can be measured by the scale lines on the winding rope 1 to ensure that the protective body 5 accurately reaches the depth of the hole or crack 10.1. It should be noted that the location of the hole or crack 10.1 is detected and recorded in advance by a detection device, and the inner wall of the borehole 10 is repaired one by one based on the detection results. That is, this utility model does not include the detection of the hole or crack 10.1.

[0030] The protective body 5 is provided with a repair slurry buffer chamber 6 at its top. The lower side wall of the repair slurry buffer chamber 6 is provided with a slurry outlet 6.1. The repair slurry buffer chamber 6 is connected to the repair slurry filler 8, which is used to introduce the repair slurry into the repair buffer chamber 6. The protective body 5 is provided with an inflation channel 5.1, which extends to the top of the protective body 5 and is connected to the air source device 3 through an inflation pipe 4. The protective body 5 is wrapped with an inflatable airbag 7, which is connected to the inflation channel 5.1. The inflatable airbag 7 is located at the bottom of the repair slurry buffer chamber 6. Its outer wall dimension in the inflated state is larger than that of the outer wall dimension of the repair slurry buffer chamber 6, and it is stepped in the inflated state. The outer wall dimension of the upper section 7.2 of the inflatable airbag 7 is smaller than that of the lower section 7.3.

[0031] The protective body 5 is fixed by inflating its upper airbag 7 to facilitate inner wall repair. Specifically, the airbag 7, under the action of the air source device 3, expands to form a structure with two sections of different outer wall dimensions. The outer wall dimension of the lower section 7.3 is larger than that of the upper section 7.2. When the lower section 7.3 abuts against the inner wall of the borehole 10 to fix the protective body 5 relative to the borehole 10, there is a gap between the upper section 7.2 and the inner wall of the borehole 10, forming a repair cavity. This repair cavity covers the hole or crack 10.1. Thus, the repair slurry buffer chamber 6 at the top of the protective body 5 flows the repair slurry down through the slurry outlet 6.1 into the repair cavity, and the repair slurry... It can fill and repair holes and cracks in the cavity. When the repair slurry has submerged the hole or crack 10.1, the filling of the repair slurry is stopped, and then left to stand. After the repair slurry solidifies, the air source device 3 exhausts the air to deflate the airbag 7. Under the action of retraction, the airbag 7 separates from the inner wall of the blast hole 10 and the repair slurry surface 9 filled on the inner wall. After the airbag 7 is completely smaller than the internal size of the repair slurry surface 9, the protective body 5 is pulled up and separated from the repair slurry surface 9 by the winding action of the winding component. At this time, the hole or crack 10.1 at this point in the blast hole 10 is filled and covered by the repair slurry surface 9. When there are multiple holes or cracks 10.1 in the borehole 10, each one is filled and repaired in sequence. Since the outer wall size of the repair slurry buffer chamber 6 is smaller than the outer wall size of the inflatable airbag 7 in the inflated state, the entire protective device can pass through the repair slurry surface 9 after the inflatable airbag 7 deflates and retracts. Therefore, there is no special requirement for the order of repair when repairing holes or cracks 10.1 of different depths in the borehole 10.

[0032] In this invention, the repair slurry buffer chamber 6 serves as a transfer point, allowing the repair slurry to fall from the outlet 6.1 into the repair cavity. To ensure the repair slurry falls evenly into the repair cavity, it is preferable that the outlet 6.1 surrounds the protective body 5. Furthermore, to prevent the repair slurry from flowing to the connection between the top of the inflatable airbag 7 and the bottom of the repair slurry buffer chamber 6, it is preferable that the outer edge of the upper end of the inflatable airbag 7 has an inclined surface 7.4. When the inflatable airbag 7 is inflated, the distance between the upper edge of the inclined surface 7.4 and the center line of the inflatable airbag 7 is less than the distance between the outlet 6.1 and the center line of the inflatable airbag 7, and also less than the distance between the lower edge of the inclined surface 7.4 and the center line of the inflatable airbag 7. Thus, the repair slurry exiting from the outlet 6.1 falls onto the inclined surface 7.4 and into the repair cavity, without flowing to the connection between the top of the inflatable airbag 7 and the bottom of the repair slurry buffer chamber 6.

[0033] The repair slurry of this invention is introduced into the repair slurry buffer chamber 6 through the repair slurry filler 8, and then flows out from the slurry outlet 6.1 on the repair slurry buffer chamber 6. In this embodiment, the repair slurry filler 8 includes a storage tank 8.1, a discharge cover 8.2, and a cover opening and closing drive 8.3. The storage tank 8.1 and the repair slurry buffer chamber 6 are integrated, and an inlet 8.1.1 is provided at the top. Preferably, a sealing cover is installed at the inlet 8.1.1. The discharge cover 8.2 is slidably sleeved on the outer wall of the storage tank 8.1 and connected to the cover opening and closing drive 8.3, which is mounted on the storage tank 8.1. It is used to drive the discharge cover 8.2 to slide to close or open the slurry outlet 6.1; the guide wire of the cover opening and closing drive 8.3 is set on the winding rope 1, and its end that is not connected to the cover opening and closing drive is connected to the control box 2; in use, the control box 2, like the winding assembly, is placed on the ground near the blast hole 10. The operator controls the operation of the cover opening and closing drive 8.3 on the ground through the control box 2, thereby causing the discharge cover 8.2 to open the slurry outlet 6.1. Preferably, the cover opening and closing drive 8.3 is an electric push rod, and the driving end of the electric push rod is connected to the discharge cover 8.2 through the connecting rod 8.4.

[0034] In this embodiment, the storage tank 8.1 is used to store a certain amount of repair slurry. This amount is determined based on the pre-determined size of the hole or crack 10.1 and the size of the repair cavity formed by the upper section 7.2 of the inflatable airbag 7 and the inner wall of the borehole 10 after inflation. Of course, the estimated value may be too small, in which case it can be filled by multiple repairs. In addition, considering that the size of the hole or crack 10.1 varies in the depth direction of the borehole 10, the storage tank 8.1 is preferably designed as an annular barrel structure. Both the storage tank 8.1 and the inflatable airbag 7 are detachably connected to the protective body 5. The guide wire of the cover opening and closing drive component 8.3 is detachably connected to the guide wire on the winding rope 1. The inflatable airbag 7 is detachably connected to the inflation channel 5.1 through the connecting air pipe. Both the storage tank 8.1 and the inflatable airbag 7 are available in various specifications, and different specifications of storage tanks are available in various sizes. The height of the material bucket 8.1 varies, and the height of the upper section 7.2 of the inflatable airbag 7 varies for different specifications. Therefore, if the size of the hole or crack 10.1 along the depth direction of the blast hole 10 is large, an inflatable airbag 7 with a longer upper section 7.2 and a material bucket 8.1 with a larger elevation angle are selected, so that the upper section 7.2 of the inflatable airbag 7 is longer than the size of the hole or crack 10.1. The material bucket 8.1 can then store a corresponding amount of repair slurry. Furthermore, this detachable design facilitates replacement and repair of damaged components. Specifically, the material bucket 8.1 is detachably connected to the protective body 5 via threads. The inflatable airbag 7 includes an annular cylinder 7.1 and a body. The body is fitted onto the outer wall of the annular cylinder 7.1, and the annular cylinder 7.1 is fitted onto the protective body 5 and detachably connected to the protective body 5 via threads. Preferably, the annular cylinder 7.1 is located at the upper part of the body. More preferably, the bottom of the storage hopper 8.1 is provided with a slot, and the upper end of the annular cylinder 7.1 protrudes from the bladder body and is inserted into the slot when both the storage hopper 8.1 and the inflatable airbag 7 are installed on the protective body 5. At this time, the upper end surface of the bladder body abuts against the bottom surface of the storage hopper 8.1. That is, through the above arrangement, the top surface of the inflatable airbag 7 can be in close contact with the bottom surface of the storage hopper 8.1.

[0035] In this embodiment, the disassembly and assembly of the repair slurry filler 8 are performed from the bottom of the protective body 5. For example, during disassembly and assembly, the guide wire of the cover plate opening and closing drive 8.3 is disconnected from the guide wire on the winding rope 1, and the inflatable airbag 7 is disconnected from the connecting air pipe. Then, the inflatable airbag 7 and the storage tank 8.1 are rotated away from the protective body 5 towards the bottom of the protective body 5 in sequence. During installation, the operation is reversed.

[0036] The working principle of the above embodiments is as follows:

[0037] Select appropriate inflatable airbags 7 and storage tanks 8.1 according to the size of the hole or crack 10.1, and install them on the protective body 5. Fill the storage tank 8.1 with appropriate repair material. Then, according to the pre-detected depth of the hole or crack 10.1, place the protective body 5 into the borehole 10 and drive the winding assembly. The protective body 5 is lowered to the location of the hole or crack 10.1 under the action of the winding assembly. During the lowering, the depth of the lowering of the protective body 5 can be determined by looking at the scale lines on the winding rope 1. After lowering to the required depth, control the operation of the air source device 3 to inflate the inflatable airbags 7. After inflation, the lower section 7.3 of the inflatable airbags 7 abuts against the inner wall of the borehole 10, specifically against the hole or crack. On the inner wall of the borehole 10 below the crack 10.1, the upper section 7.2 of the inflatable airbag 7 faces the borehole or crack 10.1, and the repair slurry buffer chamber 6 is located above the borehole or crack 10.1. Next, the cover plate opening and closing drive 8.3 of the repair slurry filling component 8 is controlled by the control box 2. The cover plate opening and closing drive 8.3 drives the discharge cover 8.2 to slide up and open the slurry outlet 6.1. The repair slurry in the storage tank 8.1 flows from the slurry outlet 6.1 into the repair cavity under its own weight until the filling is completed. After standing for a period of time, the air source device 3 is run again to deflate the inflatable airbag 7. During the deflation process, the inflatable airbag 7 gradually detaches from the inner wall of the borehole 10 and the repair slurry surface 9. After resetting, the winding assembly runs again to pull up the protective body 5. The above operation is repeated to complete the repair of the inner wall of the borehole 10. After the repair is completed, explosives are filled. In addition, after the repair is completed, a detection device can be used to detect it again. If it is found that the filling is not complete, or there are still holes or cracks 10.1, the filling can be repaired and repaired in that area.

[0038] Please see Figure 9 In the second embodiment of this utility model, the repair slurry filling component 8 includes a repair slurry storage tank (not shown), a pump body (not shown), and a delivery pipe 8.5. The inlet of the pump body is connected to the repair slurry storage tank, and the outlet of the pump body is connected to the repair slurry buffer chamber 6 through the delivery pipe 8.5. The repair slurry storage tank and the pump body are both placed on the ground near the blast hole 10. The delivery pipe 8.5 extends into the blast hole 10 along with the protective body 5. When filling the repair slurry, the pump body is turned on, and the repair slurry in the repair slurry storage tank is input into the repair slurry buffer chamber 6 through the delivery pipe 8.5, and then flows into the repair cavity through the slurry outlet 6.1. This method allows the repair slurry to be placed on the ground, and the filling amount is controlled by the pump body during filling, which prevents the repair slurry from entering the blast hole 10 with the protective body 5, thus reducing the weight of the protective body 5 and making the operation more convenient. However, the conveying pipe 8.5 needs to be relatively long, and the slurry is easy to accumulate in the conveying pipe 8.5. Therefore, the conveying pipe 8.5 needs to be cleaned after use.

[0039] The only difference between the two implementation methods is the structural form of the repair slurry filler 8. The appropriate method can be selected based on actual needs during specific use.

[0040] Finally, it should be noted that the repair slurry involved in this utility model can be mud, concrete slurry, etc., and there is no specific limitation. In order to facilitate the raising and lowering of the air inflator 4 and the material conveying pipe 8.5, both can also be raised and lowered by the winding assembly, and all the winding assemblies operate synchronously. In addition, the air inflator 4 and the air inflator channel 5.1, as well as the winding rope 1 and the protective body 5, can also be detachably connected.

[0041] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A protective device for repairing the wall of a blasting borehole, comprising a protective body, characterized in that: The protective body is connected to one end of a winding rope with graduated lines, and its other end is connected to a winding assembly for release. A repair slurry buffer chamber is located at the top of the protective body, with a slurry outlet on its lower sidewall. The repair slurry buffer chamber is connected to a repair slurry filler, which guides the repair slurry into the buffer chamber. An inflation channel extends to the top of the protective body and connects to an air source device via an inflation pipe. An inflatable airbag is wrapped around the exterior of the protective body and connects to the inflation channel. The airbag is located at the bottom of the repair slurry buffer chamber, and its inflated outer wall dimension is larger than that of the buffer chamber, forming a stepped shape. The upper outer wall dimension of the airbag is smaller than that of the lower outer wall dimension.

2. The blasting borehole wall repair and protection device as described in claim 1, characterized in that: The slurry outlet surrounds the entire protective body.

3. The blasting borehole wall repair and protection device as described in claim 1, characterized in that: The upper end of the inflatable airbag has an inclined slope. When the airbag is inflated, the distance between the upper edge of the inclined slope and the center line of the airbag is less than the distance between the outlet and the center line of the airbag, and also less than the distance between the lower edge of the inclined slope and the center line of the airbag.

4. The blasting borehole wall repair and protection device as described in claim 1, characterized in that: The repair slurry filling component includes a storage tank, a discharge cover, and a cover opening and closing drive. The storage tank and the repair slurry buffer chamber are integrated, with an inlet at the top. The discharge cover is slidably fitted onto the outer wall of the storage tank and connected to the cover opening and closing drive. The cover opening and closing drive is installed on the storage tank and is used to drive the discharge cover to slide to close or open the slurry outlet. The guide wire of the cover opening and closing drive is set on the wound rope, and one end of it, which is not connected to the cover opening and closing drive, is connected to the control box.

5. The blasting borehole wall repair and protection device as described in claim 4, characterized in that: The cover opening and closing drive is an electric push rod, and the drive end of the electric push rod is connected to the discharge cover through a connecting rod.

6. The blasting borehole wall repair and protection device as described in claim 4, characterized in that: The storage hopper has an annular barrel structure. Both the storage hopper and the inflatable airbag can be detachably connected to the protective body. The guide wire of the cover opening and closing drive component can be detachably connected to the guide wire on the winding rope. The inflatable airbag can be detachably connected to the inflation channel through the connecting air pipe.

7. The blasting borehole wall repair and protection device as described in claim 6, characterized in that: The storage hopper is detachably connected to the protective body via threads.

8. The blasting borehole wall repair and protection device as described in claim 6, characterized in that: The inflatable airbag includes an annular cylinder and an airbag body. The airbag body is fitted onto the outer wall of the annular cylinder. The annular cylinder is fitted with a protective body and is detachably connected to the protective body by threads.

9. The blasting borehole wall repair and protection device as described in claim 8, characterized in that: The annular cylinder is located at the upper part of the bladder.

10. The blasting borehole wall repair and protection device as described in claim 1, characterized in that: The repair slurry filling component includes a repair slurry storage tank, a pump body, and a delivery pipe. The inlet of the pump body is connected to the repair slurry storage tank, and the outlet of the pump body is connected to the repair slurry buffer chamber through the delivery pipe.

Images