Parabolic type explosion action and static action dual-energy-gathering device and explosion method

Abstract

The invention discloses a parabola type explosion action and static action dual-energy-gathering device and a blasting method, and relates to the technical fields of directional fracture control blasting, building demolition and the like in mine and tunnel engineering. The device comprises a main body pipe which is a hollow tubular circular ring body and forms a closed channel along the annular direction; the energy-gathered jet flow groove is formed in the outer side wall of the main body pipe and distributed in the axial direction, the cross section contour of the energy-gathered jet flow groove is in a parabola shape, and the energy-gathered jet flow groove is used for guiding explosion stress waves to be intensively propagated and released in the preset direction; the energy gathering seam is formed in the bottom of the energy gathering jet flow groove and penetrates through the inner wall of the main body pipe; and the explosive loading cavity is used for fixedly placing explosives. By combining the dual energy gathering principle of explosion action and static action, energy is concentrated in the energy gathering direction in the explosion process, so that explosion energy is accurately released along a parabola-shaped track, the explosion wave focusing effect is enhanced conveniently, and invalid energy loss is reduced.

Description

Technical Field

[0001] The invention relates to a parabolic explosive dynamic and static dual energy-gathering device and a blasting method, which are mainly used in the technical fields of mine, tunnel engineering directional fracture controlled blasting, building demolition and the like. Background Art

[0002] There is an uncoupled area between the blasthole and the explosive in mining rock blasting, and the explosive effect cannot be fully exerted; traditional blasting methods often find it difficult to accurately control the distribution of explosion energy and the range of rock crushing, which can easily lead to excessive damage or failure to achieve the expected blasting effect; traditional blasting devices often waste energy, and part of the explosion energy fails to effectively act on the target rock, but is dissipated in the air or causes unnecessary ground vibrations, resulting in ineffective loss of explosion energy; blasting operations in rock engineering such as underground mine tunnels and tunnels often cause certain damage and pollution to the surrounding environment, such as ground vibrations, air shock waves, flying rocks, flying dust, etc.; at the same time, rock engineering such as underground mine tunnels and tunnels often face complex and changeable geological conditions, such as faults, joints and weak interlayers, which makes traditional blasting methods often require a long preparation time and high construction risks. Summary of the invention

[0003] In view of this, the present invention provides a parabolic explosive dynamic and static dual energy focusing device and blasting method, which is convenient for enhancing the focusing effect of the blast wave and reducing the ineffective loss of energy.

[0004] In the first aspect, the present invention provides a parabolic explosive dynamic and static dual energy-gathering device, comprising: a main body tube, which is a hollow tubular torus, forming a closed channel along the annular direction; an energy-gathering jet groove, which is arranged on the outer wall of the main body tube and arranged along the axial direction, and the cross-sectional profile of the energy-gathering jet groove is parabolic, which is used to guide the explosion stress wave to propagate and release in a predetermined direction; an energy-gathering seam, which is arranged at the bottom of the energy-gathering jet groove and passes through the inner wall of the main body tube; and a charge cavity, which is the middle cavity position of the main body tube and is used to fix the explosive.

[0005] Optionally, the bottom opening direction of the parabolic cross-sectional profile of the energy-focusing jet trough is perpendicular to the axis of the main tube, and the angle range of two tangents at any two points on the parabolic cross-sectional profile of the energy-focusing jet trough is 10°~45°.

[0006] Optionally, the ratio of the depth of the energy focusing jet groove of the dual energy focusing device to the outer diameter of the dual energy focusing device is 3:10~3:20.

[0007] Optionally, the ratio of the width of the energy focusing slit of the dual energy focusing device to the outer diameter of the dual energy focusing device is 7:100~17:100.

[0008] Optionally, the energy focusing seam passes through the bottom of the energy focusing jet groove to the inner wall of the main body tube, and the extension direction of the energy focusing seam along the axial direction of the main body tube is parallel to the axis of the main body tube.

[0009] Optionally, the energy-focusing slit extending from the bottom of the energy-focusing jet groove to the inner wall of the main tube forms an opening with the same inner and outer widths; or, The width of the energy-gathering seam gradually increases from the bottom of the energy-gathering jet groove to the inner wall of the main body tube, and the ratio of the energy-gathering seam width to the outer diameter of the main body tube is 7:100-17:100.

[0010] Optional, The energy-focusing jet grooves include two, and the two energy-focusing jet grooves are symmetrically distributed on the outer side wall of the main tube about the axial section, and the angle between two adjacent energy-focusing jet grooves is 120°~180°; An annular groove is arranged in the charge chamber to fix the position of the explosive and prevent it from sliding.

[0011] In a second aspect, the present invention provides a blasting method based on a dual energy-gathering device with a parabolic explosive action and a static action, which is implemented based on the dual energy-gathering device described in the first aspect and includes: According to the geological exploration information of the blasting site, the parameters of the energy-gathering jet groove angle, the energy-gathering jet groove depth, the ratio of the energy-gathering jet groove depth to the outer diameter of the dual energy-gathering device, the energy-gathering seam width, and the ratio of the energy-gathering seam width to the outer diameter of the dual energy-gathering device are determined; according to the above parameters, pipe fittings are selected to be processed to form the dual energy-gathering device, and the dual energy-gathering device is connected to the blasting remote control terminal; Loading explosives into the charge chamber of the dual energy focusing device, arranging the dual energy focusing device in the blast hole, adjusting the direction of the dual energy focusing device so that the opening direction of the energy focusing jet slot is aligned with the predetermined blasting area, and plugging the blast hole with a filling material; Detonating the explosive in the charge cavity of the dual energy-gathering device by means of a blasting remote control terminal to generate an explosion stress wave and explosion gas; The parabolic cross-section energy-focusing jet trough is used to guide the explosion stress wave generated by the explosion of the explosive, so that the explosion stress wave propagates in a predetermined direction and is concentrated in a target area, thereby forming an initial crack on the rock mass in the target area; The explosive gas is propagated in a predetermined direction and continuous static pressure is applied to the initial cracks in the target area to expand the initial cracks and form a continuous fracture surface.

[0012] The parabolic explosive action and static action dual energy focusing device and blasting method provided by the present invention improve the structure of the main body pipe, set an energy focusing jet groove on the outer side wall thereof, and set the cross-sectional profile of the energy focusing jet groove to be parabolic, so as to guide the explosion stress wave to propagate and release in a predetermined direction. By combining the dual energy focusing principle of explosive action and static action, energy is concentrated in the energy focusing direction during the explosion process, so that the explosion energy is accurately released along the parabolic trajectory, which is convenient for enhancing the focusing effect of the explosion wave and reducing the ineffective loss of energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic cross-sectional view of a dual energy focusing device provided in an embodiment of the present invention; Figure 2 A schematic side view of a dual energy focusing device provided in an embodiment of the present invention; Figure 3 An oblique side view of a dual energy focusing device provided by an embodiment of the present invention; Figure 4 An oblique side view of an engineering application of a dual energy concentration device provided by an embodiment of the present invention; In the figure: 1. Energy focusing direction; 2. Energy focusing jet slot angle; 3. Energy focusing jet slot depth; 4. Explosive; 5. Energy focusing seam width. DETAILED DESCRIPTION

[0015] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0016] It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Embodiment 1: The embodiment of the present invention provides a parabolic explosive dynamic and static dual energy-gathering device, comprising: a main body tube, which is a hollow tubular annular body, forming a closed channel along the annular direction; an energy-gathering jet groove, which is arranged on the outer side wall of the main body tube and arranged along the axial direction, and the cross-sectional profile of the energy-gathering jet groove is parabolic, and is used to guide the explosion stress wave to propagate and release in a predetermined direction; an energy-gathering seam, which is arranged at the bottom of the energy-gathering jet groove and penetrates the inner wall of the main body tube; a charge cavity, which is the middle cavity position of the main body tube, and is used to fix and place explosives; In this embodiment, the main body tube is a hollow tubular torus, forming a closed channel along the annular direction; a plurality of energy-gathering jet grooves have the same shape and structure, and are located at different positions on the main body tube, and are arranged on the outer wall of the main body tube and arranged along the axial direction; the energy-gathering jet grooves are "V"-shaped parabolic energy-gathering structures, and the shape of the energy-gathering jet grooves is recessed inside the outer diameter surface of the dual energy-gathering device, see Figure 1 or Figure 3 During manufacturing, according to the needs, the dual energy-gathering device is processed into an energy-gathering jet groove with an angle, outer diameter and depth ratio suitable for the use scenario, so that the energy-gathering effect is optimal. Compared with the linear structure, the parabolic energy-gathering structure can provide a larger contact area for the explosive energy diversion, guide the explosive stress wave to propagate and release in a predetermined direction, and improve the energy-gathering effect; the energy-gathering seam is located at the bottom of the groove at the tip of the "V"-shaped structure on the energy-gathering jet groove, which can realize the directional diversion channel of the explosive gas after the explosion of the explosive 4, and the gas produces a "gas wedge" effect along the energy-gathering direction 1, thereby improving the energy-gathering effect; the charge cavity is the middle cavity position of the main tube, Used to fix explosives; after the explosives explode, the wall of the shaped charge cavity focuses the explosion energy for the first time, realizing the "early focusing" of the explosion energy. The explosion energy is preferentially transmitted along the direction of the shaped charge seam, and the detonation waveform control and gas jet can be realized at the moment when the explosion stress wave and the explosion gas are generated, thereby improving the energy focusing effect and reducing the ineffective loss of energy, thereby enhancing the energy utilization efficiency. By accurately controlling the release of the explosion energy and accurately calculating the propagation path and energy distribution of the explosion wave, the diffusion of the lateral explosion wave is reduced, the generation of ground vibration and air shock wave is reduced, and the noise and damage and pollution to the surrounding environment are reduced, thereby reducing the impact on the environment; In other embodiments, according to the usage scenario of the dual energy focusing device, only one energy focusing jet groove and the energy focusing seam on the energy focusing jet groove may be processed. The angle, depth and depth of the energy focusing jet groove and the outer diameter of the dual energy focusing device are specially designed. The width of the energy focusing seam on the energy focusing jet groove and the width and the outer diameter of the dual energy focusing device are also specially designed. That is, the dual energy focusing device has another structure with only one energy focusing jet groove and the energy focusing seam on the energy focusing jet groove.

[0018] See also Figure 1In some embodiments, the bottom opening direction of the parabolic cross-sectional profile of the energy focusing jet trough is perpendicular to the axis of the main tube, and the angle α between two tangents at any two points on the parabolic cross-sectional profile of the energy focusing jet trough is in the range of 10° to 45°, so as to achieve the best energy focusing effect of the dual energy focusing device.

[0019] In some embodiments, the ratio of the depth of the energy-gathering jet groove of the dual energy-gathering device to the outer diameter of the dual energy-gathering device is 3:10 to 3:20; Specifically, there is an optimal ratio relationship between the depth of the energy-focusing jet groove and the outer diameter of the dual energy-focusing device, and the optimal ratio relationship for achieving the best energy-focusing effect of the dual energy-focusing device is that the ratio of the depth of the energy-focusing jet groove to the outer diameter of the dual energy-focusing device is 3:10~3:20.

[0020] In some embodiments, the ratio of the energy focusing slit width of the dual energy focusing device to the outer diameter of the dual energy focusing device is 7:100 to 17:100; Specifically, there is an optimal ratio relationship between the energy focusing slit width and the outer diameter of the dual energy focusing device, and the optimal ratio relationship for achieving the best energy focusing effect of the dual energy focusing device is that the ratio of the energy focusing slit width to the outer diameter of the dual energy focusing device is 7:100~17:100.

[0021] In some embodiments, the energy-focusing seam penetrates from the bottom of the energy-focusing jet groove to the inner wall of the main body tube, and the extending direction of the energy-focusing seam along the axial direction of the main body tube is parallel to the axis of the main body tube.

[0022] Specifically, the energy-focusing seam is formed by penetrating from the bottom of the energy-focusing jet groove to the inner wall of the main body tube to form an opening seam with consistent inner and outer widths.

[0023] In other embodiments, the width of the energy-gathering seam gradually increases from the bottom of the energy-gathering jet groove to the inner wall of the main body tube, and the ratio of the energy-gathering seam width to the outer diameter of the main body tube is 7:100 to 17:100. In this way, a structural contraction and narrowing is formed at the intersection adjacent to the energy-gathering jet groove, so that the explosion stress wave and the explosion gas released outward after the blasting pass through this place, and the speed and pressure are sharply increased, so as to improve the primary rock crushing effect. In some embodiments, the energy-focusing jet grooves include two, and the two energy-focusing jet grooves are symmetrically distributed on the outer wall of the main tube about the axial section, and the angle between the two adjacent energy-focusing jet grooves is 120°~180°; in this way, the symmetrically distributed energy-focusing jet grooves enable the explosive to be detonated. Since the foci of the two symmetrically arranged parabolic energy-focusing jet grooves are located in the same area in the main tube, when they meet at this point, constructive interference between the explosion stress wave and the explosive gas occurs, that is, stress wave superposition, thereby increasing the peak stress.

[0024] An annular groove is arranged in the charge chamber to fix the position of the explosive and prevent it from sliding.

[0025] The dual energy gathering device also includes a blasting remote control terminal, which is remotely operated by an operator; In this embodiment, the dual energy gathering device also includes a blasting remote control terminal. The blasting remote control terminal uses wireless communication technology to allow an operator to remotely operate and monitor the dual energy gathering device within a safe distance, thereby reducing safety risks for workers and improving construction efficiency.

[0026] In some embodiments, the dual energy concentrator device is designed with the optimal structure according to specific engineering conditions to facilitate storage, transportation and on-site use; In this embodiment, an integrated dual-energy-gathering device with an optimal structure is designed according to conditions such as the diameter of explosives and the lead rod diameter of a rock drill (i.e., the diameter of a borehole) in a specific project, which is convenient for storage, transportation, and on-site use, reduces transportation and storage costs, and reduces the complexity of on-site operations; at the same time, a protective material is provided on the outer layer of the dual-energy-gathering device to protect the dual-energy-gathering device during transportation and loading and unloading. The protective material is designed to be reusable, which prolongs the service life of the device and reduces waste of resources.

[0027] In some embodiments, the outer layer of the charge of the dual energy focusing device is provided with a protective material; In this embodiment, high-performance explosives are selected as the charge material to ensure the explosive power and stability. At the same time, the outer layer is wrapped with protective materials to prevent accidental leakage or premature detonation of the explosives, thereby ensuring the safety and stability of the explosives during storage and transportation.

[0028] In this embodiment, the explosion direction and energy are controlled by setting a protective net, setting a stone retaining wall, changing the shape of the charge, etc., effectively preventing the generation of flying rocks and ensuring the safety outside the construction area; at the same time, the double energy-gathering device is also equipped with safety protection devices such as explosion-proof shells and safety valves to ensure the safety of the double energy-gathering device during the blasting process; The core of the dual energy-gathering device lies in the application of the energy-gathering effect. The energy-gathering effect is to highly concentrate the energy generated by the explosion of explosives in a specific direction through a specially designed charging structure, forming a high-speed metal jet or a high-pressure gas jet. This effect shows great potential in engineering blasting, rock perforation and other aspects.

[0029] The dual energy-gathering device realizes the dual utilization of explosive energy through its unique design. The dual energy-gathering device can not only produce a powerful striking effect dynamically, but also realize precise control of the target statically. This dual action mode enables the device to be used in the engineering field for operations such as rock mining and tunneling, improving construction speed and safety, and controlling blasting around underground mine tunnels and tunnels while improving the smooth blasting effect while reducing the damage to the surrounding rock caused by blasting. It can adapt to complex geological conditions such as faults, joints and weak interlayers to ensure the smooth progress of blasting operations; in the rescue field, it can be used to demolish obstacles and provide strong support for rescue operations; in the military field, it can be used to accurately strike enemy targets and improve combat efficiency; for example Figure 4 An oblique side view of the dual energy focusing device of the present invention in engineering application is provided. The energy focusing jet groove angle, the energy focusing jet groove depth, the ratio of the energy focusing jet groove depth to the outer diameter of the dual energy focusing device, the energy focusing seam width, and the ratio of the energy focusing seam width to the outer diameter of the dual energy focusing device are designed in advance according to the scenario to be used, and then manufactured, so as to enhance the controllability of blasting, improve the construction efficiency, and reduce the safety risks in the construction process; the parabolic explosive dynamic and static dual energy focusing device is a new type of equipment that integrates a variety of advanced principles and technologies, aiming to achieve efficient, precise and environmentally friendly blasting effects, and has a profound background technology and has broad application prospects and important research value in many fields.

[0030] Embodiment 2: The embodiment of the present invention provides a blasting method based on a dual energy-gathering device with a parabolic explosive action and a static action, which is implemented based on the dual energy-gathering device described in the first embodiment. The method comprises the following steps: S10, according to the geological exploration information of the blasting site, determine the parameters of the energy-gathering jet groove angle, the energy-gathering jet groove depth, the ratio of the energy-gathering jet groove depth to the outer diameter of the dual energy-gathering device, the energy-gathering seam width, and the ratio of the energy-gathering seam width to the outer diameter of the dual energy-gathering device, and according to the above parameters, select pipe fittings to form the dual energy-gathering device, and connect the dual energy-gathering device to the blasting remote control terminal; In this step, according to the use scenario of the dual energy focusing device, according to the geological structure of the target rock and the surrounding environment, the number of energy-focusing jet grooves and energy-focusing seams on the dual energy focusing device suitable for the use scenario, the angle of the energy-focusing jet groove, the depth of the energy-focusing jet groove, the ratio of the depth of the energy-focusing jet groove to the outer diameter of the dual energy focusing device, the width of the energy-focusing seam, and the ratio of the width of the energy-focusing seam to the outer diameter of the dual energy focusing device are designed in advance; the outer diameter size of the dual energy focusing device can be designed according to the expected borehole diameter in the use scenario, and then processed according to the specially designed dual energy focusing device structure to make it suitable The dual energy-gathering device with the best parameter ratio relationship used in different engineering scenarios such as mines, tunnels, and building blasting enables the dual energy-gathering device to improve energy utilization efficiency according to its specially designed structural characteristics, accurately control the release of explosion energy, and enable the dual energy-gathering device to play a suitable role in the use scenario; after understanding the engineering conditions such as the geology and structure of the specific use scenario, the dual energy-gathering device structure suitable for the use scenario is designed and processed in advance. When the processed dual energy-gathering device is transported to the use site, it can be easily installed and blasted, simplifying the operation process.

[0031] S20, loading explosives into the charge chamber of the dual energy focusing device, arranging the dual energy focusing device in the blast hole, adjusting the direction of the dual energy focusing device so that the opening direction of the energy focusing jet slot is aligned with the predetermined blasting area, and plugging the blast hole with a filling material; In this step, according to the usage scenario, the amount of charge and the explosion time are accurately adjusted, the explosives are loaded into the charging chamber of the dual energy focusing device, the dual energy focusing device is placed in the blast hole, and the direction of the dual energy focusing device is adjusted so that the opening direction of the energy focusing jet groove is aligned with the predetermined blasting area. The blast hole is sealed with filling materials to achieve precise control of the crushing range and degree of crushing, thereby ensuring that the blasting effect meets expectations.

[0032] S30, detonating the explosive in the charge cavity of the dual energy-gathering device through the blasting remote control terminal to generate an explosion stress wave and explosion gas; S40, using the parabolic cross-section of the focused jet trough to guide the explosion stress wave generated by the explosion of the explosive, so that it propagates in a predetermined direction and concentrates on a target area, thereby forming an initial crack on the rock mass in the target area.

[0033] S50, utilizing the explosion gas to propagate in a predetermined direction and applying continuous static pressure to the initial cracks in the target area to expand the initial cracks and form a continuous fracture surface.

[0034] The explosive energy mainly comes from the explosive stress wave and explosive gas generated by the explosion. Generally speaking, the propagation speed of the explosive stress wave is faster than that of the explosive gas. The explosive stress wave effect forms a jet through the energy-gathering jet groove, and the static effect of the explosive gas is transmitted along the energy-gathering direction through the energy-gathering seam, which improves the energy-gathering effect; the parabolic explosion action is an important feature. By accurately designing the projectile or the projectile device, when the explosive explodes, the energy-gathering jet groove with a parabolic cross-section is used to guide the explosive stress wave generated by the explosion of the explosive to propagate in a predetermined direction and concentrate on the target area, so that the explosive energy can be released in the form of a parabola, and the release direction of the explosive energy can be more accurately guided, thereby achieving precise control of the blasting range and the degree of fragmentation, and achieving directional impact fragmentation of the rock; when the explosive explodes, the explosive energy is released in the form of a parabola, and the impact force generated by the high-speed explosion wave is used to break the rock or accurately strike or cut the distant target. This mode of action not only concentrates the energy, but also has a wide strike range; on the other hand, The application of the static action principle enables the device to release the pressure or tension generated by the explosion to the target in a static form at the same time as the explosion, through the force transmission structure formed by the specially designed energy-gathering jet groove, energy-gathering seam and the charging cavity of the double energy-gathering device combined with the gas pressure generated by the explosion, so as to achieve slow and continuous compression, stretching or shearing deformation of the target, promote the expansion and fracture of cracks inside the rock, achieve gentle crushing of the rock, and reduce the generation of flying rocks and ground vibrations. This static action mode has the effect of accurately controlling blasting or demolition in the fields of building demolition and rock blasting. The double energy-gathering device adopts a parabolic energy-gathering structure. The propagation path and energy distribution of the blast wave are determined by calculation. The unique curved surface design formed by adjusting the depth and angle parameters of the energy-gathering jet groove can guide the propagation direction of the blast wave, so that the energy is enhanced in a specific direction, forming a directional blasting effect.

[0035] In step S30, after detonating the explosive in the charge cavity of the dual energy-gathering device, the method further includes: The high-temperature and high-pressure gas generated by the explosion of the explosive fills the charge cavity and flows into the inner wide end of the energy-gathering slit at a first speed; The gas flows from the inner wide end to the outer narrow end, and when it flows to the junction of the outer narrow end and the energy-focusing jet groove, the flow velocity is increased to the second velocity by narrowing the channel cross-sectional area at the junction; Furthermore, the cross-sectional area of ​​the channel at the junction is narrowed to cause a sudden increase in the pressure of the explosive gas, thereby forming a secondary high-pressure and high-speed directional jet, which enters the energy-focusing jet slot; wherein the secondary high-pressure and high-speed are defined relative to the initial pressure and speed.

[0036] In some embodiments, when the dual energy focusing device is installed in a blast hole, a flexible buffer layer is wrapped on the outer circumferential surface of the main tube of the dual energy focusing device and the portion located outside the energy focusing jet groove, and the outer wall of the flexible buffer layer contacts the inner wall of the blast hole.

[0037] In this embodiment, the main body tube is a high-strength metal tube. After step S30, the method further includes: using the inner layer high-strength metal main body tube to reflect the explosion stress wave in the energy focusing direction, so as to form stress reflection superposition in the main body tube and realize the first energy focusing; The external flexible buffer layer expands radially under the impact of the explosion, absorbs the recoil energy of the explosion stress wave through plastic deformation, avoids the rupture of the main tube, and ensures that the explosive gas is released toward the target area along the energy-gathering seam, so that the static pressure of the explosive gas can enter the initial cracks of the rock mass in the target area, and effectively play a role in synergistic rock crushing with the dynamic effect.

[0038] In summary, in the embodiment of the present invention, the synergistic effect of the parabolic energy-focusing jet trough and the energy-focusing slit can achieve dual focusing of the explosion energy, improve the concentration of stress wave energy, enhance the focusing effect of the explosion wave, and reduce the ineffective loss of energy. Thus, the energy utilization efficiency is enhanced, and the explosion impact wave effect and the static effect of the explosion gas are efficiently concentrated and utilized.

[0039] The present invention is applicable to underground mine tunnels and tunnels and other rock projects that often face complex and changeable geological conditions, such as faults, joints and weak interlayers. The dual energy-gathering device can better adapt to these complex geological conditions through its explosion mechanism, ensuring the smooth progress of blasting operations.

[0040] Based on the above disclosure, the parabolic explosive dynamic and static dual energy-gathering device provided in the embodiment of the present invention has significant technical advantages and application prospects in the field of rock engineering such as controlled blasting around underground mine tunnels and tunnels. It can not only improve the accuracy and controllability of blasting, but also enhance the efficiency of energy utilization, reduce the impact on the environment, improve construction efficiency and safety, and adapt to complex geological conditions.

[0041] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A parabolic explosive action and static action dual energy focusing device, characterized in that: include: The main body tube is a hollow tubular torus, forming a closed channel along the annular direction; A focused jet groove, which is arranged on the outer side wall of the main body tube and arranged along the axial direction, and has a parabolic cross-sectional profile, and is used to guide the explosion stress wave to propagate and release in a concentrated manner in a predetermined direction; An energy-gathering seam is provided at the bottom of the energy-gathering jet groove and penetrates the inner wall of the main body tube; The charge chamber is the middle cavity of the main tube and is used for fixing and placing explosives.

2. The parabolic explosive action and static action dual energy focusing device according to claim 1 is characterized in that: The bottom opening direction of the parabolic cross-sectional profile of the energy-focusing jet trough is perpendicular to the axis of the main tube, and the angle between two tangents at any two points on the parabolic cross-sectional profile of the energy-focusing jet trough is in the range of 10° to 45°.

3. The parabolic explosive action and static action dual energy focusing device according to claim 1 is characterized in that: The ratio of the depth of the energy-gathering jet groove of the dual energy-gathering device to the outer diameter of the dual energy-gathering device is 3:10-3:

20.

4. The parabolic explosive action and static action dual energy focusing device according to claim 1 is characterized in that: The ratio of the energy focusing slot width of the dual energy focusing device to the outer diameter of the dual energy focusing device is 7:100~17:

100.

5. The parabolic explosive action and static action dual energy focusing device according to claim 4 is characterized in that: The energy-gathering seam penetrates from the bottom of the energy-gathering jet groove to the inner wall of the main body tube, and the extending direction of the energy-gathering seam along the axial direction of the main body tube is parallel to the axis of the main body tube.

6. The parabolic explosive action and static action dual energy focusing device according to claim 1 is characterized in that: The energy-gathering seam penetrates from the bottom of the energy-gathering jet groove to the inner wall of the main body tube to form an opening with the same inner and outer widths; or The width of the energy-gathering seam gradually increases from the bottom of the energy-gathering jet groove to the inner wall of the main body tube, and the ratio of the energy-gathering seam width to the outer diameter of the main body tube is 7:100-17:

100.

7. The parabolic explosive action and static action dual energy focusing device according to claim 1 is characterized in that: The energy-focusing jet grooves include two, and the two energy-focusing jet grooves are symmetrically distributed on the outer side wall of the main tube about the axial section, and the angle between two adjacent energy-focusing jet grooves is 120°~180°; An annular groove is arranged in the charge chamber to fix the position of the explosive and prevent it from sliding.

8. A blasting method based on a parabolic explosive action and static action dual energy-gathering device, characterized in that: The dual energy concentration device according to any one of claims 1 to 7 is implemented, comprising: According to the geological exploration information of the blasting site, the parameters of the energy-gathering jet groove angle, the energy-gathering jet groove depth, the ratio of the energy-gathering jet groove depth to the outer diameter of the dual energy-gathering device, the energy-gathering seam width, and the ratio of the energy-gathering seam width to the outer diameter of the dual energy-gathering device are determined; according to the above parameters, pipe fittings are selected to be processed to form the dual energy-gathering device, and the dual energy-gathering device is connected to the blasting remote control terminal; Loading explosives into the charge chamber of the dual energy focusing device, arranging the dual energy focusing device in the blast hole, adjusting the direction of the dual energy focusing device so that the opening direction of the energy focusing jet slot is aligned with the predetermined blasting area, and plugging the blast hole with a filling material; Detonating the explosive in the charge cavity of the dual energy-gathering device by means of a blasting remote control terminal to generate an explosion stress wave and explosion gas; The parabolic cross-section energy-focusing jet trough is used to guide the explosion stress wave generated by the explosion of the explosive, so that the wave propagates in a predetermined direction and is concentrated in a target area, thereby forming an initial crack on the rock mass in the target area; The explosive gas is propagated in a predetermined direction and continuous static pressure is applied to the initial cracks in the target area to expand the initial cracks and form a continuous fracture surface.

9. The blasting method based on the parabolic explosive action and static action dual energy-gathering device according to claim 8, after detonating the explosive in the charge chamber of the dual energy-gathering device, the method specifically further comprises: The high-temperature and high-pressure gas generated by the explosion of the explosive fills the charge cavity and flows into the inner wide end of the energy-gathering slit at a first speed; The gas flows from the inner wide end to the outer narrow end, and when it flows to the junction of the outer narrow end and the energy-focusing jet groove, the flow velocity is increased to the second velocity by narrowing the channel cross-sectional area at the junction; Furthermore, the cross-sectional area of ​​the channel at the junction is narrowed to cause a sudden increase in the pressure of the explosive gas, thereby forming a secondary high-pressure and high-speed directional jet, which enters the energy-focusing jet slot; wherein the secondary high-pressure and high-speed are defined relative to the initial pressure and speed.

10. According to the blasting method based on the dual energy-gathering device of parabolic explosive action and static action in claim 8, when the dual energy-gathering device is installed in a blast hole, a flexible buffer layer is wrapped on the outer circumferential surface of the main tube of the dual energy-gathering device and the part outside the energy-gathering jet groove, and the outer wall of the flexible buffer layer is in contact with the inner wall of the blast hole.

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