Fracturing rock breaking pipe capable of preventing coupling blasting

Abstract

The utility model relates to the technical field of gas rock breaking, in particular to an anti-coupling blasting fracturing rock breaking pipe which comprises a fracturing rock breaking pipe body. The fracturing rock-breaking pipe comprises a fracturing rock-breaking pipe body and further comprises a first sheath and a second sheath, the first sheath is connected to the outer side of the fracturing rock-breaking pipe body, the second sheath is arranged on the portion, located on the lower side of the first sheath, of the outer side of the fracturing rock-breaking pipe body, two connecting grooves are formed in the bottom of the first sheath and the top of the second sheath correspondingly, and a clamping mechanism is arranged between every two corresponding connecting grooves. The distance between the first sheath and the second sheath is adjusted through a clamping mechanism. The first sheath and the second sheath are arranged, the direct influence of impact energy generated in the blasting and rock breaking process of the fracturing rock breaking pipe body on the hole wall of a drill hole is effectively attenuated through the excellent buffering characteristic of the first sheath and the second sheath, the non-coupling effect between the fracturing rock breaking pipe body and the drill hole is achieved, the two sheaths have the flexibility and the elastic deformation capacity, and the fracture rock breaking pipe body is not prone to deformation. And irregular gaps and form changes between the fracturing rock breaking pipe body and the hole wall of the drill hole can be fully adapted.

Description

Technical Field

[0001] This utility model relates to the field of gas rock breaking technology, and in particular to a rock breaking tube for preventing coupled explosion. Background Technology

[0002] Compared to traditional explosive blasting technology, a complete set of liquid oxygen-biomass green high-energy instantaneous release rock breaking technology based on liquid oxygen plus carbon-based materials as the blasting or rock breaking medium has the characteristics of safety, economy, green and low carbon, and convenient construction.

[0003] Traditional coupled-charge structures for rock-breaking blasting tubes have significant shortcomings. When liquid oxygen or high-purity oxygen absorbs heat and vaporizes, expanding, the flexible membrane sleeve forms a rigid coupling with the borehole wall, leading to an excessively concentrated release of blasting energy. This strong coupling causes the blast shock wave and high-pressure gas to directly act on the surrounding rock, making it difficult to precisely control the excavation profile and resulting in poor rock surface formation quality. This can easily lead to over-excavation, under-excavation, and uneven surfaces. Especially in smooth blasting and other conditions requiring high excavation precision, this charging method often causes an expansion of the surrounding rock disturbance range and excessive development of fractures, seriously affecting the final formation effect and the stability of the surrounding rock. Existing structures cannot meet the stringent requirements of boundary control and rock surface quality for high-precision blasting operations, thus limiting their application in refined construction.

[0004] Therefore, in response to the problem that the expansion of the flexible membrane sleeve of the existing rock-breaking tube after oxygenation coupled with the borehole wall, but the effect is not good when precise control of the blasting boundary is required, a rock-breaking tube that prevents coupling blasting can be designed. Utility Model Content

[0005] To overcome the problem that the expansion of the flexible membrane sleeve after oxygenation of existing fractured rock pipes coupled with the borehole wall, but the effect is not good when precise control of the blasting boundary is required.

[0006] The technical solution of this utility model is as follows: a rock-breaking pipe for preventing coupled blasting, comprising a rock-breaking pipe body; and a first sheath and a second sheath. The first sheath is connected to the outer side of the rock-breaking pipe body, and the second sheath is provided on the outer side of the rock-breaking pipe body below the first sheath. Two connecting grooves are provided at the bottom of the first sheath and the top of the second sheath, and a locking mechanism is provided between the corresponding two connecting grooves. The distance between the first sheath and the second sheath is adjusted by the locking mechanism.

[0007] Preferably, by setting a first sheath and a second sheath, both made of foam cotton, good cushioning performance is provided, reducing the direct impact of the energy released by the blasting and rock breaking of the rock-breaking tube body on the borehole wall, forming a decoupled connection between the rock-breaking tube body and the borehole. Furthermore, it possesses a certain degree of softness and elasticity, adapting to irregular gaps and shape changes between the rock-breaking tube body and the borehole wall. Secondly, it has a certain degree of compressive strength, preventing easy compression and rupture or excessive compression and stacking under the volume expansion caused by the internal liquid oxygenation and high-purity oxygen heat absorption before the rock-breaking tube body is detonated or activated. This solves the problem that existing rock-breaking tube bodies, during oxygenation, undergo vaporization and volume expansion due to the absorption of heat from the surrounding environment by liquid oxygen or high-purity oxygen, causing the flexible membrane sheath to expand accordingly. When the flexible membrane sheath expands to a certain extent, it makes close contact with the borehole wall, forming a coupled state. However, in scenarios requiring good control of excavation boundaries and rock-breaking excavation surfaces, the coupled charging structure almost fails to achieve ideal results.

[0008] Preferably, the locking mechanism includes an installation component and a positioning component; the installation component is used to install the positioning component, and the positioning component is used to limit the first sheath and the second sheath.

[0009] Preferably, the mounting assembly includes positioning blocks and positioning rings; positioning blocks are provided inside the four connecting slots, and positioning rings are installed at the ends of the positioning blocks.

[0010] Preferably, the positioning component includes a rotating rod and a blade; the rotating rod is connected between the two corresponding positioning rings, and the rotating rod is rotatably connected to the positioning rings. Blades are provided at both the upper and lower ends of the rotating rod, and rotating the rotating rod can drive the blades to embed into the corresponding sheaths.

[0011] Preferably, both the first and second sheaths have multiple sets of through holes at their tops, which are distributed circumferentially.

[0012] Preferably, both the first sheath and the second sheath are provided with connecting components on their inner sides, and the first sheath and the second sheath are fixed to the rock-breaking tube body through the connecting components.

[0013] Preferably, the connecting component includes adhesive tape and oil film; the inner sides of both the first and second sheaths are provided with four circumferentially distributed adhesive tapes, and the outer sides of the adhesive tapes are covered with oil film.

[0014] The beneficial effects of this utility model are:

[0015] By setting up a first sheath and a second sheath, both made of foam cotton, the excellent buffering properties of the foam cotton effectively attenuate the direct impact of the impact energy generated during the blasting and rock breaking of the rock-breaking pipe body on the borehole wall, achieving a decoupling effect between the rock-breaking pipe body and the borehole. Both sheaths have flexibility and elastic deformation capabilities, which can fully adapt to the irregular gaps and shape changes between the rock-breaking pipe body and the borehole wall. At the same time, the foam cotton material has sufficient compressive strength, which can resist the volume expansion pressure caused by the internal liquid oxygen oxidization reaction and the heat absorption process of high-purity oxygen when the rock-breaking pipe body is in an unexploded state, ensuring that the two sheaths do not experience compressive rupture or excessive compression and overlap. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the first sheath of this utility model;

[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of the locking mechanism of this utility model;

[0019] Figure 4 The diagram shown is a three-dimensional half-section view of the first sheath of this utility model.

[0020] Figure 5 The diagram shown is a three-dimensional structural schematic of the blade of this utility model;

[0021] Figure 6 The diagram shown is a three-dimensional structural schematic of the positioning ring of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Rock-breaking pipe body; 2. First sheath; 3. Second sheath; 4. Connecting groove; 51. Positioning block; 52. Positioning ring; 53. Rotating rod; 54. Blade; 6. Through hole; 71. Adhesive patch; 72. Oil film. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-5This utility model provides an embodiment of a rock-breaking pipe designed to prevent coupled blasting, comprising a rock-breaking pipe body 1; and a first sheath 2 and a second sheath 3. The first sheath 2 is connected to the outer side of the rock-breaking pipe body 1, and the second sheath 3 is disposed on the outer side of the rock-breaking pipe body 1 below the first sheath 2. Two connecting grooves 4 are provided at the bottom of the first sheath 2 and the top of the second sheath 3, and a locking mechanism is provided between the corresponding two connecting grooves 4. The distance between the first sheath 2 and the second sheath 3 is adjusted by the locking mechanism. The first sheath 2 and the second sheath 3, made of foam cotton, allow for... Its excellent buffering performance effectively absorbs the impact energy released during the blasting of the rock-breaking tube body 1, reducing the direct impact on the borehole wall and achieving the effect of decoupled charging. The two sheaths are both flexible and elastic, and can closely fit the irregular gap between the rock-breaking tube body 1 and the borehole wall. At the same time, in the unexcited state, it can withstand the pressure generated by the oxidization of liquid oxygen and the heat absorption and expansion of high-purity oxygen without excessive compression or rupture, ensuring the structural stability before blasting. This design not only optimizes the energy release efficiency, but also effectively protects the integrity of the borehole, significantly improving the safety and reliability of the rock-breaking tube body 1.

[0025] Please see Figures 1-6 In this embodiment, the locking mechanism includes an installation component and a positioning component. The installation component is used to install the positioning component, and the positioning component is used to limit the position of the first sheath 2 and the second sheath 3. By setting the locking mechanism, the first sheath 2 and the second sheath 3 can adjust their distance with the cooperation of the locking mechanism, thereby adapting to different rock-breaking pipe bodies 1. The installation component includes a positioning block 51 and a positioning ring 52. The interior of each of the four connecting slots 4 is provided with a positioning block 51, and the end of the positioning block 51 is equipped with a positioning ring 52. By setting the positioning block 51, the positioning ring is used to position the positioning ring. 52 is installed and fixed. The positioning component includes a rotating rod 53 and a blade 54. The rotating rod 53 is connected between the two corresponding positioning rings 52. The rotating rod 53 is rotatably connected to the positioning ring 52. Blades 54 are provided at both the upper and lower ends of the rotating rod 53. Rotating the rotating rod 53 can drive the blade 54 to embed into the corresponding sheath. By setting the rotating rod 53, under the limiting action of the positioning ring 52, the rotating rod 53 can rotate. When the rotating rod 53 rotates, it can drive the blade 54 to embed into the first sheath 2 or the second sheath 3, fixing the position of the first sheath 2 and the second sheath 3.

[0026] Please see Figures 1-4In this embodiment, multiple sets of through holes 6 are provided through the top of both the first sheath 2 and the second sheath 3. The multiple sets of through holes 6 are circumferentially distributed. By setting the through holes 6, the through holes 6 can absorb the impact force through compressed air or material deformation, which can improve the buffering performance of the first sheath 2 and the second sheath 3. The inner side of both the first sheath 2 and the second sheath 3 is provided with a connecting component. The first sheath 2 and the second sheath 3 are fixed to the rock-breaking pipe body 1 through the connecting component. The connecting component is used to fix the first sheath 2 and the second sheath 3 to the rock-breaking pipe body 1 to prevent slippage. The connecting component includes an adhesive patch 71 and an oil film 72. The inner side of both the first sheath 2 and the second sheath 3 is provided with four circumferentially distributed adhesive patches 71. The outer side of the adhesive patch 71 is covered with an oil film 72. By setting the oil film 72, after peeling off the oil film 72, the adhesive patch 71 can be bonded to the rock-breaking pipe body 1.

[0027] During assembly, the first sheath 2 and the second sheath 3 are pulled according to the length of the rock-breaking tube body 1 to adjust the distance between them so that they match the length of the rock-breaking tube body 1. Then, the rotating rod 53 is rotated so that the blades 54 at both ends of the rotating rod 53 are embedded in the first sheath 2 and the second sheath 3 respectively, thereby achieving positioning of the two. After adjustment, the first sheath 2 and the second sheath 3 are put on the outside of the rock-breaking tube body 1, and the oil film 72 on the surface of the adhesive tape 71 is peeled off. The first sheath 2 and the second sheath 3 are then glued to the outside of the rock-breaking tube body 1 by the adhesive tape 71 to achieve fixation.

[0028] Through the above steps, a buffer structure is formed by using a first sheath 2 and a second sheath 3 made of foam cotton, which wraps around the fracturing rock tube body 1. This design effectively absorbs the impact energy released when the fracturing rock tube body 1 is blasted, significantly reducing the direct effect of the blast shock wave on the borehole wall and achieving a decoupled charge effect. The flexibility of the sheaths allows them to adapt to the irregular gap between the fracturing rock tube body 1 and the borehole wall. At the same time, when the fracturing rock tube body 1 is not blasted, the two sheaths can stably withstand the pressure generated by the internal liquefied oxygenation and the heat absorption and expansion of high-purity oxygen. To avoid compression deformation or structural failure, this innovative design significantly improves the safety of the fracturing rock-breaking tube body 1 and the borehole protection effect while ensuring blasting efficiency. This solves the problem that in existing fracturing rock-breaking tube bodies 1, during oxygen filling, liquid oxygen or high-purity oxygen absorbs heat from the surrounding environment, causing vaporization and volume expansion. The flexible membrane sleeve also expands accordingly. When the flexible membrane sleeve expands to a certain extent, it comes into close contact with the borehole wall, forming a coupling state. However, in blasting and rock-breaking excavation scenarios that require good control of the excavation boundary and the rock surface, the coupled charging structure can hardly achieve the ideal effect.

Claims

1. A rock-breaking pipe designed to prevent coupled blasting, comprising a rock-breaking pipe body (1); characterized in that: It also includes a first sheath (2) and a second sheath (3). The outer side of the fractured rock pipe body (1) is connected to the first sheath (2), and the outer side of the fractured rock pipe body (1) is provided with the second sheath (3) below the first sheath (2). The bottom of the first sheath (2) and the top of the second sheath (3) are both provided with two connecting grooves (4). A locking mechanism is provided between the two corresponding connecting grooves (4). The gap between the first sheath (2) and the second sheath (3) is adjusted by the locking mechanism.

2. The anti-coupling blasting rock-breaking pipe according to claim 1, characterized in that: The locking mechanism includes an installation component and a positioning component; the installation component is used to install the positioning component, and the positioning component is used to limit the first sheath (2) and the second sheath (3).

3. The anti-coupling blasting rock-breaking pipe according to claim 2, characterized in that: The mounting components include a positioning block (51) and a positioning ring (52); the interior of each of the four connecting slots (4) is provided with a positioning block (51), and the end of the positioning block (51) is provided with a positioning ring (52).

4. The anti-coupling blasting rock-breaking pipe according to claim 3, characterized in that: The positioning component includes a rotating rod (53) and a blade (54); the rotating rod (53) is connected between the two corresponding positioning rings (52), the rotating rod (53) is rotatably connected to the positioning rings (52), and the upper and lower ends of the rotating rod (53) are provided with blades (54). Rotating the rotating rod (53) can drive the blades (54) to be embedded inside the corresponding sheath.

5. The anti-coupling blasting rock-breaking pipe according to claim 1, characterized in that: Both the top of the first sheath (2) and the second sheath (3) have multiple sets of through holes (6) which are distributed in a circular pattern.

6. The anti-coupling blasting rock-breaking pipe according to claim 1, characterized in that: Both the inner sides of the first sheath (2) and the second sheath (3) are provided with connecting components, and the first sheath (2) and the second sheath (3) are fixed to the rock-breaking pipe body (1) through the connecting components.

7. The anti-coupling blasting rock-breaking pipe according to claim 6, characterized in that: The connecting component includes an adhesive patch (71) and an oil film (72); the inner sides of the first sheath (2) and the second sheath (3) are provided with four circumferentially distributed adhesive patches (71), and the outer sides of the adhesive patches (71) are covered with an oil film (72).

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