Reducing agent for liquid oxygen blasting, liquid oxygen blasting device, system and using method

Abstract

The invention belongs to the technical field of engineering blasting, and discloses a reducing agent for liquid oxygen blasting, a liquid oxygen blasting device and system and a using method. The reducing agent for liquid oxygen blasting comprises the following components: carbon powder, aluminum powder and a binder, wherein the ratio of the component of the carbon powder to the component of the aluminum powder is greater than or equal to 3: 1. The liquid oxygen blasting device comprises an electronic igniter, a liquid filling pipe, an exhaust pipe, an outer sleeve and a combustible layer. The liquid oxygen blasting system comprises a liquid oxygen blasting device, a liquid filling unit, an electric blasting network and a blasting control center. According to the invention, the problems of low safety, unstable efficiency, high preparation cost and low intelligent degree in the prior art are solved.

Description

Technical Field

[0001] This invention belongs to the field of engineering blasting technology, specifically relating to a reducing agent for liquid oxygen blasting, a liquid oxygen blasting device, a system, and a method of use. Background Technology

[0002] Liquid oxygen blasting technology is a technique that uses liquid oxygen as an oxidizer, mixed with combustible materials, to carry out explosive operations. It is commonly used in mining, rock breaking, and demolition projects. Traditional liquid oxygen blasting typically uses sawdust, coal powder, etc., as reducing agents (combustible materials), mixed with liquid oxygen before blasting. However, existing technologies have some shortcomings:

[0003] The existing technology has the following drawbacks:

[0004] 1) Low safety: Traditional explosives are high-risk to store and transport and are prone to explosion. After an explosion, they produce toxic gases and residues, polluting the environment.

[0005] 2) Unstable efficiency: Gas blasting technology (such as carbon dioxide blasting) is easily affected by temperature and pressure fluctuations. Liquid gas is prone to volatilization, resulting in insufficient explosive force and unstable efficiency.

[0006] 3) High manufacturing cost: Traditional liquid oxygen explosion devices require complex equipment for manufacturing, which increases manufacturing costs and restricts large-scale application;

[0007] 4) Low level of intelligence: Most existing liquid oxygen blasting systems lack intelligent design, making it difficult to quickly and accurately adjust parameters and customize devices according to different blasting needs (such as different rock hardness and different borehole sizes), thus limiting the room for optimization of blasting effects. Summary of the Invention

[0008] In order to address the problems of low safety, unstable efficiency, high preparation cost, and low level of intelligence in existing technologies, the present invention aims to provide a reducing agent for liquid oxygen explosion, a liquid oxygen explosion device, a system, and a method of use.

[0009] The technical solution adopted in this invention is as follows:

[0010] A reducing agent for liquid oxygen blasting, comprising carbon powder, aluminum powder, and a binder, wherein the ratio of carbon powder to aluminum powder is greater than or equal to 3:1.

[0011] Furthermore, the binder is epoxy resin, and the ratio of the reducing agent used for liquid oxygen blasting to the binder is greater than or equal to 30:1.

[0012] A liquid oxygen blasting device is disclosed, based on a liquid oxygen blasting reducing agent. The reducing agent comprises carbon powder, aluminum powder, and a binder. The liquid oxygen blasting device includes an electronic igniter, a filling pipe, an exhaust pipe, an outer casing, and a combustible material layer. The combustible material layer is provided with the liquid oxygen blasting reducing agent. The filling pipe and the exhaust pipe are both located inside the outer casing, with the top ends of the filling pipe and the exhaust pipe located outside the top end of the outer casing. The electronic igniter is connected to the combustible material layer.

[0013] Furthermore, the combustible material layer includes an adsorption medium and a liquid oxygen blasting reducing agent arranged around the center, and the combustible material layer is shaped like a hollow cylinder, the adsorption medium is shaped like a sheet surrounding the center, and at least one side of the adsorption medium is uniformly adsorbed with the liquid oxygen blasting reducing agent.

[0014] Furthermore, the outer tube is made of flexible plastic and has a box-shaped structure with a closed bottom. The inner cavity of the outer tube contains liquid oxygen.

[0015] The top of the outer tube is fitted with a plug, through which the filling tube and the venting tube connect the inner cavity and the outside.

[0016] Furthermore, the preparation method of the liquid oxygen explosion device includes the following steps:

[0017] The carbon powder and aluminum powder were mixed in a 3:1 ratio, and a binder was added to prepare a reducing agent for liquid oxygen explosion.

[0018] A combustible layer is prepared by uniformly adsorbing a reducing agent for liquid oxygen explosion onto the surface of an adsorption medium and surrounding the adsorption medium around a hollow center.

[0019] A liquid oxygen explosion device is prepared by placing a combustible material layer, a liquid filling pipe, and an exhaust pipe into an outer casing, connecting an electronic igniter to the combustible material layer, and adding a plug.

[0020] A liquid oxygen blasting system is provided, based on a liquid oxygen blasting device. The liquid oxygen blasting device includes an electronic igniter, a filling pipe, an exhaust pipe, an outer casing, and a combustible material layer. The liquid oxygen blasting system includes a liquid oxygen blasting device, a filling unit, an electro-blasting network, and a blasting control center. The blasting control center is communicatively connected to both the filling unit and the electro-blasting network. The filling unit is fixedly connected to the filling pipe of the liquid oxygen blasting device, and the electro-blasting network is electrically connected to the electronic igniter of the liquid oxygen blasting device.

[0021] Furthermore, the blasting control center is equipped with a CAE simulation unit, a prediction model construction unit, a device parameter prediction unit, and a blasting control unit.

[0022] A method for using a liquid oxygen blasting system, based on which the liquid oxygen blasting system includes a liquid oxygen blasting device, a liquid filling unit, an electro-blasting network, and a blasting control center, and the method of use includes the following steps:

[0023] In the blasting control center, a simulation model of the liquid oxygen blasting device was constructed using the finite element method based on CAE simulation units.

[0024] Using a liquid oxygen blasting device simulation model, simulations were conducted under different preset liquid oxygen blasting requirements to generate several preset borehole parameters and corresponding simulation device parameters.

[0025] Based on several preset borehole parameters and corresponding simulation device parameters, a device parameter prediction model is constructed using a deep learning algorithm based on a prediction model building unit.

[0026] Based on the real-time borehole parameters collected from the target borehole and the corresponding real-time liquid oxygen blasting requirements, the corresponding real-time device parameters are generated using the device parameter prediction model.

[0027] Based on the real-time device parameters, a corresponding liquid oxygen blasting device is prepared, placed into the corresponding target borehole, and connected to the liquid filling unit and the electric blasting network.

[0028] Based on the blasting control unit, the liquid filling unit is controlled to fill the liquid oxygen blasting device with liquid. After the liquid filling is completed, the liquid filling unit is disconnected.

[0029] Based on the blasting control unit, the liquid oxygen blasting device is controlled through an electro-blasting network to blast the target borehole.

[0030] Furthermore, in the blasting control center, a simulation model of the liquid oxygen blasting device is constructed using the finite element method based on CAE simulation units, including the following steps:

[0031] Based on the CAE simulation unit, the material parameters of the combustible layer, including carbon powder, aluminum powder, binder and adsorption medium, are defined. The first equation of state is selected to describe the initial state of the combustible layer material parameters, and the second equation of state is selected to describe the initial state of the explosion product material.

[0032] Define a reaction rate model between the electronic igniter and the combustible layer to describe the reaction rate of the combustible layer material under high temperature shock, and define a material conversion model for the phase change / reaction of the combustible layer material to the explosion product material.

[0033] Using the finite element method, a component simulation model of the liquid oxygen explosion device, including the combustible material layer, outer casing, filling pipe, and exhaust pipe, was constructed. The simulation models of all components were then meshed and assembled to obtain the initial simulation model of the liquid oxygen explosion device.

[0034] Initial state parameters were set for the initial liquid oxygen explosion device simulation model, the boundary conditions of the filling pipe and the exhaust pipe were defined, and the position and operation mode of the electronic igniter were defined to obtain the final liquid oxygen explosion device simulation model.

[0035] The beneficial effects of this invention are as follows:

[0036] This invention discloses a reducing agent, a liquid oxygen explosion device, a system, and a method of use for liquid oxygen explosion. It employs a composite reducing agent of carbon powder and aluminum powder, combined with a binder to form a structured mixture, which is more stable than traditional loose mixtures, reducing the risk of accidental ignition. The flexible outer casing and standardized liquid filling and venting design also reduce operational hazards. Electronic ignition replaces traditional ignition methods, further improving ignition safety. Furthermore, the combustion products are mainly carbon dioxide and aluminum oxide, with no toxic gases generated. The specific ratio of carbon powder to aluminum powder (3:1) works synergistically, combined with the thermite reaction, to produce higher explosion energy and a more stable detonation velocity. The structured combustible layer design ensures uniform liquid oxygen penetration, resulting in more thorough mixing. The explosive performance is more consistent and controllable. Furthermore, the standardized device structure and preparation method simplify the on-site operation process. Automated liquid filling and ignition control reduce manual intervention and improve operational efficiency. The flexible outer casing facilitates use in boreholes of different shapes. The blasting control center, which integrates CAE simulation and deep learning prediction models, can intelligently generate optimal blasting device parameters and liquid filling schemes based on different geological conditions, borehole parameters, and blasting requirements. This achieves "tailor-made" blasting operations with strong adaptability. Moreover, by precisely controlling device parameters and liquid filling volume, combined with an optimized reducing agent formula, the expected blasting effect (such as fragment size and throwing distance) can be achieved more accurately, improving resource utilization and engineering benefits.

[0037] Other beneficial effects of the present invention will be further explained in the specific embodiments. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the liquid oxygen explosion device in this invention.

[0039] Figure 2 This is a structural block diagram of the liquid oxygen explosion system in this invention.

[0040] Figure 3 This is a flowchart illustrating the usage method of the liquid oxygen explosion system in this invention.

[0041] In the diagram, 1 is the electronic igniter; 2 is the filling tube; 3 is the exhaust tube; 4 is the outer tube; 5 is the combustible material layer; and 6 is the packing material. Detailed Implementation

[0042] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0043] Example 1:

[0044] This embodiment provides a reducing agent for liquid oxygen explosion. The reducing agent for liquid oxygen explosion includes carbon powder, aluminum powder and binder. The ratio of carbon powder to aluminum powder is greater than or equal to 3:1.

[0045] Preferably, the binder is epoxy resin, and the ratio of the reducing agent for liquid oxygen blasting to the binder is greater than or equal to 30:1.

[0046] Weigh carbon powder and aluminum powder at a mass ratio of 3:1 and mix them evenly. Then, weigh epoxy resin at a mass ratio of 30:1 for the total mass of the reducing agent for liquid oxygen blasting to the mass of epoxy resin. Slowly add the mixed carbon powder and aluminum powder to the epoxy resin and stir evenly to ensure that the binder evenly covers the powder surface, forming a mixture with a certain viscosity. This mixture is the reducing agent for liquid oxygen blasting.

[0047] In this embodiment, carbon powder and aluminum powder are selected as the main reducing agents and mixed in a specific ratio. A binder is then added. Carbon powder provides the main flammability, while the addition of aluminum powder can significantly improve the explosive power (aluminothermic reaction). At the same time, the binder combines the two to form a mixture with a certain structure and strength. The specific ratio (carbon powder: aluminum powder = 3:1) and binder ratio (reducing agent: binder ≥ 30:1) are designed to balance explosive power, stability and feasibility of the preparation process. Compared with traditional sawdust, this composite reducing agent has a higher energy density and a more stable physical form, improves combustion efficiency and environmental friendliness, enhances safety, and lays the foundation for subsequent precise control of explosive performance.

[0048] Example 2:

[0049] like Figure 1 As shown, this embodiment provides a liquid oxygen explosion device based on a liquid oxygen explosion reducing agent. The components of the liquid oxygen explosion reducing agent include carbon powder, aluminum powder, and a binder. The liquid oxygen explosion device includes an electronic igniter 1, a filling pipe 2, an exhaust pipe 3, an outer casing 4, and a combustible material layer 5. The combustible material layer 5 is provided with the liquid oxygen explosion reducing agent. The filling pipe 2 and the exhaust pipe 3 are both located inside the outer casing 4, and the top ends of the filling pipe 2 and the exhaust pipe 3 are located outside the top end of the outer casing 4. The electronic igniter 1 is connected to the combustible material layer 5.

[0050] Preferably, the combustible layer 5 includes an adsorption medium and a liquid oxygen blasting reducing agent arranged around the center, and the combustible layer 5 is a cylindrical shape with a hollow center, the adsorption medium is a sheet shape arranged around the center, and at least one side of the adsorption medium is uniformly adsorbed with the liquid oxygen blasting reducing agent.

[0051] Select a fiber sheet material with good water absorption and certain mechanical strength, such as toilet paper or non-woven fabric, as the adsorption medium. Apply or spray the liquid oxygen explosion reducing agent prepared in Example 1 evenly on one or both sides of the adsorption medium to ensure uniform adsorption of the reducing agent. Then, roll the sheet medium with the adsorbed reducing agent into a cylindrical shape, leaving a cavity in the center for placing the electronic igniter 1. Adjust the tightness of the roll to make the combustible layer 5 reach the required density.

[0052] Preferably, the outer tube 4 is made of flexible plastic material, the outer tube 4 is a box-shaped structure with a closed bottom, and the inner cavity of the outer tube 4 is provided with liquid oxygen.

[0053] The top of the outer tube 4 is provided with a plug 6, and the filling tube 2 and the venting tube 3 pass through the plug 6 to connect the inner cavity and the outside.

[0054] Take a section of flexible plastic pipe, such as polyethylene or polypropylene pipe, and seal one end to form a box-shaped outer tube 4 with a closed bottom. Place the prepared combustible layer 5 into the outer tube 4, ensuring that the hollow part in the center of the cylinder is aligned with the center of the outer tube 4. Place the electronic igniter 1 with a lead wire in the hollow part of the combustible layer 5, ensuring that it is in close contact with the reducing agent. Insert the filling tube 2 and the venting tube 3 through the filler 6, such as a rubber stopper or a special seal, at the top of the outer tube 4 into the outer tube 4, so that their ends are near the combustible layer 5. Adjust the position of each component to ensure structural stability. Then seal the top of the outer tube 4 with the filler 6 to fix the filling tube 2 and the venting tube 3.

[0055] As a preferred embodiment, the preparation method of the liquid oxygen explosion device includes the following steps:

[0056] A1: Mix the carbon powder and aluminum powder in a 3:1 ratio and add a binder to prepare a reducing agent for liquid oxygen explosion.

[0057] A2: The liquid oxygen explosion reducing agent is uniformly adsorbed on the surface of the adsorption medium, and the adsorption medium is surrounded around the hollow center to prepare a combustible layer.

[0058] A3: The combustible material layer, the liquid filling pipe and the exhaust pipe are placed into the outer casing, the electronic igniter is connected to the combustible material layer and a plug is placed to prepare the liquid oxygen explosion device.

[0059] In this embodiment, the liquid oxygen blasting reducing agent of the above-mentioned specific formulation is uniformly adsorbed through an adsorption medium (such as specially made fiber sheets, paper rolls, etc.) to form a cylindrical hollow combustible layer. This structural design facilitates the uniform penetration and mixing of liquid oxygen. At the same time, the hollow part can hold an electronic igniter to ensure accurate ignition position. The outer tube is made of flexible plastic material, which is easy to deform and place. The bottom is sealed to prevent liquid oxygen leakage. The filling tube is used to inject liquid oxygen, and the exhaust tube is used to discharge air or gas that may be introduced during adsorption by the adsorption medium, and to discharge some gas before the explosion to optimize the porosity. The filling material is used to seal the position where the filling tube and exhaust tube pass through the top of the outer tube. The electronic igniter is connected to the combustible layer through a wire to achieve precise and safe ignition. This structural design improves the uniformity and stability of the mixing of liquid oxygen and reducing agent, further enhancing safety and the controllability of the blasting effect. It is simple to prepare, requires no complex equipment, is low in cost, suitable for large-scale application, has low blasting vibration, weak destructive force on the surrounding environment, and clean combustion products.

[0060] Example 3:

[0061] like Figure 2 As shown, this embodiment provides a liquid oxygen blasting system based on a liquid oxygen blasting device. The liquid oxygen blasting device includes an electronic igniter, a filling pipe, an exhaust pipe, an outer casing, and a combustible material layer. The liquid oxygen blasting system includes a liquid oxygen blasting device, a filling unit, an electro-blasting network, and a blasting control center. The blasting control center is communicatively connected to the filling unit and the electro-blasting network, respectively. The filling unit is fixedly connected to the filling pipe of the liquid oxygen blasting device, and the electro-blasting network is electrically connected to the electronic igniter of the liquid oxygen blasting device.

[0062] Preferably, the blasting control center is equipped with a computer-aided engineering (CAE) simulation unit, a prediction model construction unit, a device parameter prediction unit, and a blasting control unit.

[0063] In this embodiment, the blasting control center uses a CAE simulation unit to virtually simulate the liquid oxygen blasting device, predicting the blasting effects and corresponding liquid oxygen blasting device parameters under different working conditions. Based on a large amount of simulation data, a prediction model is constructed using algorithms such as deep learning. This model can predict and generate optimal device parameters (such as outer casing size, combustible layer thickness, density, etc.) in real time according to actual borehole parameters (such as borehole diameter, borehole depth, rock properties, etc.) and blasting requirements. The blasting control center controls the ignition timing of the electronic igniter through an electro-blasting network and precisely controls the amount of liquid oxygen filled through a liquid filling unit. This intelligent system greatly improves the accuracy, efficiency, and safety of blasting operations and realizes personalized customization of blasting schemes.

[0064] Example 4:

[0065] like Figure 3As shown, this embodiment provides a method for using a liquid oxygen blasting system. Based on the liquid oxygen blasting system, which includes a liquid oxygen blasting device, a filling unit, an electro-blasting network, and a blasting control center, the method of use includes the following steps:

[0066] S1: In the blasting control center, based on CAE simulation elements, a simulation model of the liquid oxygen blasting device is constructed using the finite element method, including the following steps:

[0067] S1-1: Based on the CAE simulation unit, define the material parameters of the combustible layer, including carbon powder, aluminum powder, binder and adsorption medium. These parameters include, but are not limited to, density, specific heat capacity, thermal conductivity, mechanical strength (compressive strength, tensile strength) and combustion / explosion characteristic parameters after mixing with liquid oxygen (such as heat of reaction, reaction rate constant, activation energy, etc.). Select the first equation of state to describe the initial state of the combustible layer material parameters, and select the second equation of state to describe the initial state of the explosion product material.

[0068] In this embodiment, for the combustible layer material in the initial state, an equation describing the behavior of solids or mixtures is selected (e.g., the Mie-Gruneisen equation of state or a polynomial equation of state). For the gaseous and solid explosion products generated at the moment of explosion and afterwards, an equation that can describe the behavior of gas under high temperature and high pressure, such as the JWL (Jones-Wilkins-Lee) equation of state, is required, which can fit the pressure-volume relationship of the explosion products well.

[0069] S1-2: Define the reaction rate model between the electronic igniter and the combustible layer, describe the reaction rate of the combustible layer material under high temperature shock, and define the material conversion model of the phase change / reaction of the combustible layer material to the explosion product material.

[0070] A mathematical model needs to be established to describe how the initial high temperature generated after the electronic igniter is activated triggers a reaction in the adjacent combustible layer, and how the reaction propagates to the entire combustible layer at a certain rate. The reaction rate model is based on the Arrhenius equation and considers the effects of temperature, pressure, and material concentration. At the same time, a material transformation model also needs to be defined. The most common approach is to use the Arrhenius model or its variants (such as the multi-step reaction model) to describe this material transformation. The material transformation model describes how the combustible layer (reactant) transforms into explosion products (products) after reaching certain conditions, involving the release of energy, the conservation of mass, and the rapid expansion of volume.

[0071] S1-3: Using the finite element method, construct component simulation models of the combustible layer, outer casing, filling pipe, and exhaust pipe of the liquid oxygen explosion device, and perform mesh generation and model assembly on all component simulation models to obtain the initial simulation model of the liquid oxygen explosion device.

[0072] In detail, three-dimensional geometric models of each component of the liquid oxygen blasting device are created separately in CAE software: the combustible material layer (cylindrical with a hollow middle section), the flexible plastic outer tube, the filling pipe for injecting liquid oxygen, the exhaust pipe for discharging air and vaporizing oxygen, and the electronic igniter. After creation, the geometric model of each component is meshed to generate a finite element mesh composed of a large number of tiny elements (such as tetrahedral and hexahedral elements). The density of the mesh affects the calculation accuracy and speed. A denser mesh needs to be arranged in key areas (such as stress concentration areas and energy release areas). Finally, these meshed component models are assembled according to the actual assembly relationship to form a complete initial simulation model of the liquid oxygen blasting device.

[0073] S1-4: Set initial state parameters for the initial liquid oxygen explosion device simulation model, define the boundary conditions of the filling pipe and the exhaust pipe, and define the position and operation mode of the electronic igniter to obtain the final liquid oxygen explosion device simulation model.

[0074] In detail, initial state parameters are set for the assembled initial model, such as the temperature and pressure (possibly atmospheric pressure) of the combustible layer at the start of the simulation, and the initial environmental conditions inside and outside the outer casing. Then, key boundary conditions are defined: the inlet of the filling pipe will be used to simulate the injection of liquid oxygen, and its pressure or flow boundary needs to be set; the outlet of the exhaust pipe simulates the discharge of gas, and may be set as a pressure outlet or free flow; finally, the location of the electronic igniter (usually inside the combustible layer or near the center) and its ignition mode (such as the instantaneous release of heat and energy) are precisely set.

[0075] S2: Using a liquid oxygen blasting device simulation model, simulations are performed under different preset liquid oxygen blasting requirements to generate several preset borehole parameters and corresponding simulation device parameters.

[0076] This includes setting a series of different preset borehole parameters (such as borehole diameter of 100mm and 150mm; borehole depth of 5m and 10m) and blasting requirements (such as fragmentation strength and throwing requirements), performing multiple simulations for each combination, recording the corresponding optimal simulation device parameters (such as combustible material layer thickness of 5mm and 8mm), and pairing these large amounts of "preset borehole parameters + blasting requirements" with "optimal simulation device parameters" data.

[0077] S3: Based on several preset borehole parameters and corresponding simulation device parameters, construct a device parameter prediction model using a deep learning algorithm based on the prediction model building unit.

[0078] At the target blasting site, measure and record the actual parameters of the target blast hole (such as hole diameter, hole depth, hole inclination, rock hardness grade, etc.) and the specific requirements of this blasting (such as the need for a large block ratio, the need for throwing distance, etc.).

[0079] S4: Based on the real-time borehole parameters collected from the target borehole and the corresponding real-time liquid oxygen blasting requirements, the device parameter prediction model is used to generate the corresponding real-time device parameters.

[0080] S5: Based on the real-time device parameters, prepare the corresponding liquid oxygen blasting device, place the liquid oxygen blasting device into the corresponding target borehole, and connect it to the liquid filling unit and the electric blasting network;

[0081] S6: Based on the blasting control unit, control the liquid filling unit to fill the liquid oxygen blasting device with liquid. After the liquid filling is completed, disconnect the liquid filling unit.

[0082] The blasting control center's "blasting control unit" issues a command to control the filling unit (usually a liquid oxygen storage tank and its associated pumps, valves, and flow meter system) connected to the blast hole to begin injecting liquid oxygen into the liquid oxygen blasting device. The filling process may require precise control of the flow rate and pressure to ensure that the liquid oxygen penetrates evenly into all parts of the combustible layer. The blasting control unit monitors the filling process and uses flow meters or timers to determine whether the filling volume has reached the preset value. When the filling reaches the required level or the set time has elapsed, the control unit commands the filling to stop.

[0083] S7: Based on the blasting control unit, it controls the liquid oxygen blasting device through the electric blasting network to blast the target borehole;

[0084] After confirming that all blast holes have been filled with liquid and personnel have been evacuated to a safe area, the blasting control unit of the blasting control center sends an initiation signal to the electronic igniters of all (or selected) liquid oxygen blasting devices connected to the electronic blasting network via the electrical blasting network. Upon receiving the signal, the electronic igniters instantly generate high temperatures, igniting the adjacent combustible layer. The combustion of the combustible layer will spread rapidly and steadily, reacting violently with the liquid oxygen to produce high-temperature and high-pressure explosive gases, forming a powerful shock wave and stress, thereby breaking rocks or achieving other blasting objectives.

[0085] A precise simulation model was established using CAE simulation and the finite element method, taking into account the complex physicochemical properties of the reducing agent components, adsorption medium, liquid oxygen, and explosion products. Through extensive virtual simulations, a deep learning model was trained, enabling it to intelligently predict the optimal device parameters based on the actual borehole conditions and blasting target. During on-site operation, a customized blasting device was generated based on real-time data, and the filling and ignition were completed through an automated system. This achieved precision, automation, and intelligence in blasting operations, significantly improving operational efficiency and safety.

[0086] This invention discloses a reducing agent, a liquid oxygen explosion device, a system, and a method of use for liquid oxygen explosion. It employs a composite reducing agent of carbon powder and aluminum powder, combined with a binder to form a structured mixture, which is more stable than traditional loose mixtures, reducing the risk of accidental ignition. The flexible outer casing and standardized liquid filling and venting design also reduce operational hazards. Electronic ignition replaces traditional ignition methods, further improving ignition safety. Furthermore, the combustion products are mainly carbon dioxide and aluminum oxide, with no toxic gases generated. The specific ratio of carbon powder to aluminum powder (3:1) works synergistically, combined with the thermite reaction, to produce higher explosion energy and a more stable detonation velocity. The structured combustible layer design ensures uniform liquid oxygen penetration, resulting in more thorough mixing. The explosive performance is more consistent and controllable. Furthermore, the standardized device structure and preparation method simplify the on-site operation process. Automated liquid filling and ignition control reduce manual intervention and improve operational efficiency. The flexible outer casing facilitates use in boreholes of different shapes. The blasting control center, which integrates CAE simulation and deep learning prediction models, can intelligently generate optimal blasting device parameters and liquid filling schemes based on different geological conditions, borehole parameters, and blasting requirements. This achieves "tailor-made" blasting operations with strong adaptability. Moreover, by precisely controlling device parameters and liquid filling volume, combined with an optimized reducing agent formula, the expected blasting effect (such as fragment size and throwing distance) can be achieved more accurately, improving resource utilization and engineering benefits.

[0087] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A reducing agent for liquid oxygen explosion, characterized in that: The reducing agent for liquid oxygen blasting comprises carbon powder, aluminum powder, and a binder, wherein the ratio of carbon powder to aluminum powder is greater than or equal to 3:

1.

2. The reducing agent for liquid oxygen explosion according to claim 1, characterized in that: The adhesive is epoxy resin, and the ratio of the reducing agent for liquid oxygen blasting to the adhesive is greater than or equal to 30:

1.

3. A liquid oxygen blasting device, based on the reducing agent for liquid oxygen blasting as described in claim 2, wherein the reducing agent for liquid oxygen blasting comprises carbon powder, aluminum powder, and a binder, characterized in that: The liquid oxygen explosion device includes an electronic igniter (1), a filling pipe (2), an exhaust pipe (3), an outer tube (4), and a combustible material layer (5). The combustible material layer (5) is provided with a reducing agent for liquid oxygen explosion. The filling pipe (2) and the exhaust pipe (3) are both located inside the outer tube (4), and the top of the filling pipe (2) and the top of the exhaust pipe (3) are located outside the top of the outer tube (4). The electronic igniter (1) is connected to the combustible material layer (5).

4. The liquid oxygen explosion device according to claim 3, characterized in that: The combustible layer (5) includes an adsorption medium and a liquid oxygen explosion reducing agent arranged around the center. The combustible layer (5) is a cylindrical shape with a hollow center. The adsorption medium is a sheet shape arranged around the center. At least one side of the adsorption medium is uniformly adsorbed with the liquid oxygen explosion reducing agent.

5. A liquid oxygen explosion device according to claim 4, characterized in that: The outer tube (4) is made of flexible plastic material. The outer tube (4) is a box-shaped structure with a closed bottom. The inner cavity of the outer tube (4) is provided with liquid oxygen. The top end of the outer tube (4) is provided with a plug (6), and the filling tube (2) and the venting tube (3) pass through the plug (6) to connect the inner cavity and the outside.

6. The liquid oxygen explosion device according to claim 5, characterized in that: The preparation method of the liquid oxygen explosion device includes the following steps: The carbon powder and aluminum powder were mixed in a 3:1 ratio, and a binder was added to prepare a reducing agent for liquid oxygen explosion. A combustible layer is prepared by uniformly adsorbing a reducing agent for liquid oxygen explosion onto the surface of an adsorption medium and surrounding the adsorption medium around a hollow center. A liquid oxygen explosion device is prepared by placing a combustible material layer, a liquid filling pipe, and an exhaust pipe into an outer casing, connecting an electronic igniter to the combustible material layer, and adding a plug.

7. A liquid oxygen explosion system, based on the liquid oxygen explosion device as described in claim 6, wherein the liquid oxygen explosion device comprises an electronic igniter, a filling pipe, an exhaust pipe, an outer casing, and a combustible material layer, characterized in that: The liquid oxygen blasting system includes a liquid oxygen blasting device, a liquid filling unit, an electro-blasting network, and a blasting control center. The blasting control center is communicatively connected to both the liquid filling unit and the electro-blasting network. The liquid filling unit is fixedly connected to the liquid filling pipe of the liquid oxygen blasting device, and the electro-blasting network is electrically connected to the electronic igniter of the liquid oxygen blasting device.

8. A liquid oxygen explosion system according to claim 7, characterized in that: The blasting control center is equipped with a CAE simulation unit, a prediction model construction unit, a device parameter prediction unit, and a blasting control unit.

9. A method of using a liquid oxygen blasting system, based on the liquid oxygen blasting system as described in claim 8, wherein the liquid oxygen blasting system comprises a liquid oxygen blasting device, a liquid filling unit, an electro-blasting network, and a blasting control center, characterized in that: The method of use includes the following steps: In the blasting control center, a simulation model of the liquid oxygen blasting device was constructed using the finite element method based on CAE simulation units. Using a liquid oxygen blasting device simulation model, simulations were conducted under different preset liquid oxygen blasting requirements to generate several preset borehole parameters and corresponding simulation device parameters. Based on several preset borehole parameters and corresponding simulation device parameters, a device parameter prediction model is constructed using a deep learning algorithm based on a prediction model building unit. Based on the real-time borehole parameters collected from the target borehole and the corresponding real-time liquid oxygen blasting requirements, the corresponding real-time device parameters are generated using the device parameter prediction model. Based on the real-time device parameters, a corresponding liquid oxygen blasting device is prepared, placed into the corresponding target borehole, and connected to the liquid filling unit and the electric blasting network. Based on the blasting control unit, the liquid filling unit is controlled to fill the liquid oxygen blasting device with liquid. After the liquid filling is completed, the liquid filling unit is disconnected. Based on the blasting control unit, the liquid oxygen blasting device is controlled through an electro-blasting network to blast the target borehole.

10. The method of using a liquid oxygen explosion system according to claim 9, characterized in that: In the blasting control center, a simulation model of the liquid oxygen blasting device is constructed using the finite element method based on CAE simulation elements, including the following steps: Based on the CAE simulation unit, the material parameters of the combustible layer, including carbon powder, aluminum powder, binder and adsorption medium, are defined. The first equation of state is selected to describe the initial state of the combustible layer material parameters, and the second equation of state is selected to describe the initial state of the explosion product material. Define a reaction rate model between the electronic igniter and the combustible layer to describe the reaction rate of the combustible layer material under high temperature shock, and define a material conversion model for the phase change / reaction of the combustible layer material to the explosion product material. Using the finite element method, a component simulation model of the liquid oxygen explosion device, including the combustible material layer, outer casing, filling pipe, and exhaust pipe, was constructed. The simulation models of all components were then meshed and assembled to obtain the initial simulation model of the liquid oxygen explosion device. Initial state parameters were set for the initial liquid oxygen explosion device simulation model, the boundary conditions of the filling pipe and the exhaust pipe were defined, and the position and operation mode of the electronic igniter were defined to obtain the final liquid oxygen explosion device simulation model.

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