Blasting operation method with water cannon holes

Abstract

This invention discloses a blasting operation method with a water-filled borehole, belonging to the field of blasting technology. The method includes: Step 1, filling the borehole with water until the water depth is equal to the borehole depth; Step 2, preparing an initiating explosive charge: inserting an electronic detonator into emulsion explosive and fixing the detonator lead wire to the charge; Step 3, placing the initiating explosive charge into the borehole using a delivery device; Step 4, adding water to the borehole to block the upper part; Step 5, evacuating equipment and personnel, connecting to the network, and conducting the blasting operation according to blasting safety regulations. This invention is time-saving, labor-saving, and cost-effective. It also ensures that the explosive energy is evenly distributed across the borehole wall, resulting in uniform rock fragmentation and minimizing the generation of flyrock, thus improving safety.

Description

Technical Field

[0001] This invention relates to the field of blasting technology, specifically a blasting operation method with water jet holes. Background Technology

[0002] Currently, during open-pit blasting operations, factors such as abundant surrounding groundwater or rainy weather often lead to water accumulation in the blast holes, significantly impacting the quality of the explosive charge and the effectiveness of the rock fracture zone. Conventional solutions include using water pumps and high-pressure air jets, but these methods are time-consuming, labor-intensive, and costly. Furthermore, when groundwater is abundant, pumping can cause the blast holes to overflow again, creating a significant challenge for explosive loading and filling, resulting in poor post-blasting performance.

[0003] Patent document CN 114963903 A discloses a method for blasting water-rich boreholes using mixed emulsion explosives. By designing the borehole filling structure, mixed emulsion explosives are filled in sections within the water-rich borehole, using borehole slag as spacers, and blasting is performed in sections. Adjustments to the on-site mixed emulsion explosive ratio are made to increase the detonation velocity, reduce the amount of explosive used and the maximum amount of explosive in each section, thereby reducing blasting vibration and lowering blasting costs. Simultaneously, the blasting effect is improved, with no base after blasting. Furthermore, the difficulty of blasting construction is effectively reduced, alleviating the labor intensity of workers. However, this invention uses borehole slag to fill the borehole, which is time-consuming and labor-intensive, and the blasting effect is not ideal. Patent document CN 116123950 A discloses a charging device and blasting method for fractured zones and water-bearing boreholes. It applies a superabsorbent polymer (SAP) to jointed, fractured, and water-bearing boreholes, combining it with a sleeve and mining charging bag for blasting. By using the SAP to combine with the injected water in the jointed and fractured boreholes, the boreholes can be sealed, preventing explosive loss and energy leakage. However, this invention uses a SAP for filling, which is not only time-consuming and labor-intensive but also costly. Summary of the Invention

[0004] In view of this, the present invention addresses the shortcomings of the prior art by providing a blasting operation method with water cannon holes, which is time-saving, labor-saving, cost-saving, produces uniform crushing, and has good safety.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a blasting operation method with water jet holes, comprising the following steps:

[0006] S1. Pour water into the borehole so that the water depth in the borehole is the same as the borehole depth.

[0007] S2. Making the explosive charge: Insert the electronic detonator into the emulsion explosive and fix the lead wire of the electronic detonator to the charge;

[0008] S3. Use the detonation equipment to place the detonating charge into the borehole;

[0009] S4. Add water into the borehole to block the upper part;

[0010] S5. Evacuate equipment and related personnel, connect to the network, and carry out blasting operations in accordance with the requirements of blasting safety regulations.

[0011] Furthermore, the explosive discharge device includes a counterweight frame, a plastic clip, and a release mechanism. The plastic clip is fixed to the middle of the detonating explosive charge and secured to the inside of the counterweight frame. The release mechanism is provided on the upper side of the counterweight frame. When the detonating explosive charge enters the designated position of the borehole, the release mechanism releases the plastic clip and the detonating explosive charge from the counterweight frame and secures them inside the borehole.

[0012] Furthermore, the counterweight frame includes a ring, with two semi-circular rings hinged to one side of the bottom of the ring via a pin. A torsion spring is sleeved on the pin, and the two ends of the torsion spring are respectively connected to the two semi-circular rings. Each of the free ends of the two semi-circular rings is provided with a locking block, and each locking block is provided with a first vertical hole. The ring is provided with a second vertical hole, and the second vertical hole corresponds to the position of the first vertical hole.

[0013] Furthermore, the plastic clip includes a retaining ring, and multiple baffles are provided around the periphery of the retaining ring. The distance from the outer end of the baffle to the center of the retaining ring is greater than the radius of the blast hole.

[0014] Preferably, the release mechanism includes a pull rope and a pin connected to one end of the pull rope. The other end of the pull rope is fixedly connected to the top of the ring, and the connection point corresponds to the position of the pin. The pin passes through the second vertical hole and is secured in the two first vertical holes.

[0015] Preferably, the release mechanism includes two vertical rods, one of which is fixedly connected to the top of the ring, with the connection point corresponding to the position of the pin, and the lower end of the other vertical rod passes through the second vertical hole and is secured in the two first vertical holes.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] This invention relates to a blasting method with water-filled boreholes. The boreholes are filled with water, and then emulsion explosives are placed in using a detonation device. The top is sealed with water pressure. This method not only saves time, effort, and costs, but also ensures that the explosive energy of the explosives is evenly distributed around the borehole walls, resulting in uniform rock fragmentation and minimizing the generation of flyrock, thus ensuring good safety.

[0018] The explosive device used in this invention uses a disposable plastic clip fixed in the middle of the detonating explosive charge. A counterweight frame is then installed on the outside of the plastic clip, causing multiple baffles of the clip to bend and limit their position between two semicircular rings. The locking blocks of the two semicircular rings align. A pin or vertical rod of the release mechanism passes through the rings and is secured within the two locking blocks by a torsion spring. The detonating explosive charge is hoisted into the borehole via the release mechanism. Once it reaches the designated position, the release mechanism's rope or vertical rod is pulled upwards, causing the pin or vertical rod to be pulled out from the two locking blocks. Under the action of the torsion spring, the two semicircular rings separate, and the plastic clip unfolds from the counterweight frame under the action of elastic potential energy and locks into the borehole. This fixes the detonating explosive charge in a suitable position within the borehole, solving the problem of the detonating explosive charge being difficult to place due to buoyancy when the borehole is filled with water. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the operation of Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the drug dispensing device in Embodiment 2 of the present invention;

[0021] Figure 3 This is a top view of the drug dispensing device in Embodiment 2 of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the plastic card in Embodiment 2 of the present invention;

[0023] Figure 5 This is a schematic diagram of the drug dispensing device in Embodiment 3 of the present invention;

[0024] In the diagram, 1-blast hole, 2-water, 3-explosive charge, 4-electronic detonator lead wire, 5-circular ring, 6-semi-circular ring, 7-clamping block, 8-fixing ring, 9-baffle plate, 10-pull rope, 11-pin, 12-vertical rod. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0026] Example 1

[0027] See Figure 1 A blasting operation method with water cannon holes includes the following steps:

[0028] Step 1: Pour water 2 into borehole 1 so that the depth of water 2 in borehole 1 is the same as the depth of the borehole.

[0029] Step 2, Making the explosive charge 3: Insert the electronic detonator into the emulsion explosive and fix the electronic detonator lead wire 4 to the explosive charge;

[0030] Step 3: Use the detonation equipment to place the detonating charge 3 into the blast hole;

[0031] Step 4: Add water into the borehole to block the upper part;

[0032] Step 5: Evacuate equipment and personnel, connect to the network, and carry out blasting operations in accordance with the requirements of the blasting safety regulations.

[0033] This invention provides a blasting method using water-filled boreholes, solving the problems of traditional water-filled boreholes where water needs to be pumped out before blasting, resulting in time-consuming, labor-intensive, and costly operations, and the risk of water overflowing again after pumping when groundwater is abundant. This invention fills the borehole with water, inserts emulsion explosives, and uses water pressure to seal the top, saving time, labor, and costs. Furthermore, it ensures that the explosive energy is evenly distributed across the borehole wall, resulting in uniform rock fragmentation, reduced flyrock production, and improved safety.

[0034] Example 2

[0035] See Figures 2-4 The difference between this embodiment and Embodiment 1 is that the explosive device used in step 3 is used to solve the problem that when the water cannon hole is filled with water, the explosive charge cannot quickly reach the bottom of the hole or the designated position due to buoyancy.

[0036] The explosive discharge device includes a counterweight frame, a plastic clip, and a release mechanism. The plastic clip is fixed to the middle of the detonating explosive charge 3 and is secured to the inside of the counterweight frame. The release mechanism is provided on the upper side of the counterweight frame. When the detonating explosive charge 3 enters the designated position of the blast hole, the release mechanism releases the plastic clip and the detonating explosive charge from the counterweight frame and locks them inside the blast hole.

[0037] The counterweight frame includes a circular ring 5, with two semi-circular rings 6 hinged to one side of the bottom of the circular ring 5 via a pin. A torsion spring is sleeved on the pin, and the two ends of the torsion spring are respectively connected to the two semi-circular rings 6. Each of the free ends of the two semi-circular rings 6 is provided with a locking block 7. Each locking block 7 is provided with a first vertical hole. The circular ring 5 is provided with a second vertical hole, and the second vertical hole corresponds to the position of the first vertical hole.

[0038] The plastic clip includes a retaining ring 8, and three baffles 9 are provided around the retaining ring 8. The distance from the outer end of the baffle 9 to the center of the retaining ring 8 is greater than the radius of the blast hole.

[0039] The release mechanism includes a pull rope 10 and a pin 11 connected to one end of the pull rope 10. The other end of the pull rope 10 is fixedly connected to the top of the ring 5, and the connection point corresponds to the position of the pin shaft. The pin 11 passes through the second vertical hole and is locked in the two first vertical holes.

[0040] In this embodiment of the invention, to ensure a uniform and bubble-free medium within the borehole and guarantee the blasting effect, the borehole needs to be filled with water first. However, this causes the emulsion explosive to be affected by buoyancy during placement, making accurate positioning impossible. Therefore, this embodiment provides a placement device. During placement, the detonating explosive package is first fixed within the fixing ring of a plastic clip. Then, the plastic clip is placed between two semi-circular rings on the lower side of the counterweight frame. By pressing and closing the two semi-circular rings, the locking blocks align, causing the three baffles of the plastic clip to bend and secure between the two semi-circular rings. Finally, the end of the pull rope... The pin passes through the second vertical hole on the ring and is inserted into the first vertical hole of the two semicircular rings. The two semicircular rings tend to separate under the action of the torsion spring, thus locking the pin in the locking block. Then, the operator holds the middle of the pull rope and puts the explosive charge and the counterweight frame into the blast hole together. After it is lowered to the appropriate position, the operator quickly pulls one side of the pull rope upward, so that the pin is pulled out from the first vertical hole. The two semicircular rings separate from each other under the action of the torsion spring, and the three baffles unfold under the action of elastic potential energy and lock into the inner wall of the blast hole, thus fixing the position of the explosive charge. Then the counterweight frame is pulled out.

[0041] Example 3

[0042] See Figure 5 The difference between this embodiment and Embodiment 2 is that:

[0043] The release mechanism includes two vertical rods 12, one of which is fixedly connected to the top of the ring 5, with the connection point corresponding to the position of the pin. The lower end of the other vertical rod 12 passes through the second vertical hole and is secured in the two first vertical holes.

[0044] In this embodiment of the invention, the release mechanism adopts a rigid connection method with vertical rods. When releasing the two semi-circular rings, pulling out one side of the vertical rod allows the other side of the vertical rod to maintain the stability of the counterweight frame and the detonating explosive charge, thereby improving the smoothness and safety of the detonation operation.

[0045] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method of a blast operation with watered holes, characterized in that, Includes the following steps: S1. Pour water into the borehole so that the water depth in the borehole is the same as the borehole depth. S2. Making the explosive charge: Insert the electronic detonator into the emulsion explosive and fix the lead wire of the electronic detonator to the charge; S3. Use the detonation equipment to place the detonating charge into the borehole; S4. Add water into the borehole to block the upper part; S5. Evacuate equipment and related personnel, connect to the network, and carry out blasting operations in accordance with the requirements of the blasting safety regulations; The explosive discharge device includes a counterweight frame, a plastic clip, and a release mechanism. The plastic clip is fixed to the middle of the detonating explosive charge and secured to the inside of the counterweight frame. The release mechanism is located on the upper side of the counterweight frame. When the detonating explosive charge enters the designated position in the borehole, the release mechanism releases the plastic clip and the detonating explosive charge from the counterweight frame and locks them inside the borehole. The counterweight frame includes a ring. Two semi-circular rings are hinged to one side of the bottom of the ring by a pin. A torsion spring is sleeved on the pin, and both ends of the torsion spring are connected to the two semi-circular rings respectively. Each of the free ends of the two semi-circular rings is provided with a locking block. Each locking block is provided with a first vertical hole. A second vertical hole is provided on the ring, and the second vertical hole corresponds to the position of the first vertical hole.

2. The blasting operation method with water-filled boreholes according to claim 1, characterized in that: The plastic clip includes a retaining ring, and multiple baffles are provided around the periphery of the retaining ring. The distance from the outer end of the baffle to the center of the retaining ring is greater than the radius of the blast hole.

3. The blasting operation method with water-filled boreholes according to claim 2, characterized in that: The release mechanism includes a pull rope and a pin connected to one end of the pull rope. The other end of the pull rope is fixedly connected to the top of the ring, and the connection point corresponds to the position of the pin. The pin passes through the second vertical hole and is locked in the two first vertical holes.

4. The blasting operation method with water-filled boreholes according to claim 2, characterized in that: The release mechanism includes two vertical rods, one of which is fixedly connected to the top of the ring, with the connection point corresponding to the position of the pin. The lower end of the other vertical rod passes through the second vertical hole and is secured in the two first vertical holes.

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