Rock drilling and blasting device and rock drilling and blasting method

Abstract

The embodiments of the present invention provide a rock drilling and blasting device and a rock drilling and blasting method. The rock drilling and blasting device includes a blasting tube, an ignition head, an oxidizing liquid injection system and multiple blasting medium layers. The blasting tube is used to be installed in a borehole. The blasting tube includes multiple sections of hard blasting tube bodies. The multiple sections of blasting tube bodies are arranged in the borehole in an end-to-end manner. Each section of the blasting tube body has a filling cavity, and the filling cavities of each section of the blasting tube body are interconnected; multiple blasting medium layers are correspondingly arranged in the multiple blasting tube bodies, a part of the ignition head is arranged in the blasting medium layer, and another part of the ignition head extends out of the filling cavity, and the oxidizing liquid injection system is connected to the filling cavity. The rock drilling and blasting device of the embodiment of the present invention is suitable for deep large-block or large-scale rock blasting, which can not only reduce the damage to the surrounding environment caused by severe blasting, but also has the advantage of saving blasting costs.

Description

Technical Field

[0001] The invention relates to the technical field of rock blasting, and in particular to a rock drilling and blasting device and a rock drilling and blasting method using the rock drilling and blasting device. Background Art

[0002] Gas blasting technology uses the gasification and expansion of easily gasified liquid or solid materials to generate high-pressure gas, causing the surrounding medium to expand and do work. It has the characteristics of no open flame, safety and high efficiency. The rock drilling and blasting device gasifies the easily gasified materials in the vaporization liquid storage tube after the heating detonator is ignited and heated. When the pressure in the blasting tube reaches the limit strength of the constant pressure shear plate, the high-pressure gas breaks through the constant pressure shear plate and sprays out from the energy release end, using the powerful thrust generated instantly to achieve the purpose of breaking the rock.

[0003] In the related art, the blasting tube of the drilling and blasting device is a single composite tube (soft). When blasting, the single composite tube is wrapped into a cylinder and filled in the blasthole (drilling hole). The single composite tube can usually reach a depth of 4m-5m before bending due to low structural strength. This type of drilling and blasting device is mainly used for open-air operations and road and bridge construction, blasting buildings, shallow tunnels and mines, etc., and has a poor blasting effect for deep and large-scale rock breaking. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art to at least a certain extent. To this end, an embodiment of the present invention provides a rock drilling and blasting device. The rock drilling and blasting device can not only avoid the damage to the surrounding environment caused by violent explosion, but also has the advantage of saving blasting costs.

[0005] An embodiment of the present invention further provides a rock drilling and blasting method.

[0006] The rock drilling and blasting device according to the embodiment of the present invention comprises a blasting tube, an ignition head, an oxidizing liquid injection system and a plurality of blasting medium layers.

[0007] The blasting tube is used to be installed in a borehole, and the blasting tube includes multiple sections of hard blasting tube bodies, which are arranged in the borehole in an end-to-end manner along the extension direction of the borehole, each section of the blasting tube body has a filling cavity, and the filling cavities of each section of the blasting tube body are interconnected; multiple blasting medium layers are correspondingly arranged in multiple blasting tube bodies; the ignition head extends along the axial direction of the blasting tube body, a part of the ignition head is arranged in the blasting medium layer, and another part of the ignition head extends out of the filling cavity; the oxidizing liquid injection system is connected to the filling cavity.

[0008] The rock drilling and blasting device of the embodiment of the present invention can greatly improve the penetration depth of the blasting tube into the corresponding borehole by forming a blasting tube with multiple sections of the blasting tube body in an end-to-end manner along the extension direction of the borehole (generally, a soft blasting tube can only reach a borehole with a depth of 4m-5m, while the blasting tube formed by the multiple sections of the hard blasting tube body in the rock drilling and blasting device of the embodiment of the present invention can reach a borehole with a depth of 20m-30m), thereby allowing the blasting medium layer to extend into a borehole of greater depth, and the explosion energy of the blasting medium layer acts evenly around the borehole wall, so that the deep, large-scale or large-block rock can be broken evenly and is not easy to generate flying rocks, which has the advantages of good safety and low blasting cost.

[0009] Therefore, the rock drilling and blasting device according to the embodiment of the present invention is suitable for blasting large rocks in deep layers, which can not only avoid the damage to the surrounding environment caused by the violent explosion, but also has the advantage of saving blasting costs.

[0010] In some embodiments, adjacent blasting tubes are sealed and connected by threads, snaps or adhesives.

[0011] In some embodiments, the bursting tube body has a first end and a second end oppositely disposed along its axial direction, the first end has a connecting protrusion, and the second end has a connecting hole, wherein the connecting protrusion of one bursting tube extends into the connecting hole of an adjacent bursting tube.

[0012] In some embodiments, the length of each section of the blasting tube body is 1m-2m; the diameter of the blasting tube is 40mm-180mm, and the total length of the blasting tube is 10m-30m.

[0013] In some embodiments, each section of the blasting pipe body is a PVC pipe body or a PE pipe body.

[0014] In some embodiments, the rock drilling and blasting device further includes a sealing layer, one end of the blasting tube can extend into the bottom of the borehole, the other end of the blasting tube is sealed in the borehole, the sealing layer is sealed and filled in the other end of the blasting tube, and the thickness of the sealing layer is 0.8m-1.5m.

[0015] In some embodiments, there are multiple ignition heads, and the multiple ignition heads are arranged one-to-one in the blasting medium layer, and adjacent ignition heads are connected in series through foot wires.

[0016] In some embodiments, the blasting medium layer includes an oxidizing liquid and a reducing absorbing layer, the reducing absorbing layer is filled in the filling cavity, and the oxidizing liquid is adsorbed on the reducing absorbing layer.

[0017] In some embodiments, the oxidizing liquid injection system includes a storage device, an injection pump, a filling tube and an oxidizing liquid source. The storage device is connected to the filling chamber through the filling tube so as to inject the oxidizing liquid into the reduction absorption layer. The oxidizing liquid source is stored in the storage device, and the injection pump is arranged on the filling tube.

[0018] In some embodiments, the oxidizing liquid injection system further includes an exhaust pipe, one end of which is connected to the filling chamber, and the other end of which penetrates through the sealing layer to extend into the blasting tube.

[0019] In some embodiments, the oxidizing liquid is liquid oxygen.

[0020] In some embodiments, the reducing absorption layer is a fibrous combustible material or a carbonaceous combustible material.

[0021] In some embodiments, there are a plurality of blasting tubes, and the plurality of blasting tubes are arranged at intervals, and a distance between adjacent blasting tubes is 2m-4m.

[0022] In some embodiments, the ignition heads corresponding to each of the bursting tubes are connected in parallel via foot wires.

[0023] In some embodiments, the rock drilling and blasting device further comprises a remote control blasting system, wherein the remote control blasting system comprises a signal receiving device and a remote control blaster, wherein the signal receiving device is connected to the ignition head so as to activate the ignition head through the remote control blaster.

[0024] The rock drilling and blasting method according to the embodiment of the present invention comprises the following steps:

[0025] S1: Drilling holes with a depth of 20m-30m on the working face platform;

[0026] S2: pre-loading a portion of the blasting medium layer into the filling cavity, and sequentially placing the blasting tubes in the rock drilling and blasting device according to any one of claims 1 to 9 into the borehole in an end-to-end manner;

[0027] S3: the oxidizing liquid injection system is connected to the filling chamber so as to fill another part of the blasting medium layer into the filling chamber;

[0028] S4: activating the ignition head to detonate the rock drilling and blasting device.

[0029] In some embodiments, the diameter of the drill hole is 50 mm-200 mm, and the diameter of the drill hole is 10 mm-20 mm larger than the diameter of the blasting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1The present invention is a schematic diagram of a rock drilling and blasting device and a drilling device according to an embodiment of the present invention.

[0031] Figure 2 It is a schematic diagram of the assembly of a bursting tube, a liquid filling tube and an exhaust pipe according to an embodiment of the present invention.

[0032] Figure 3 It is a schematic structural diagram of a bursting tube according to an embodiment of the present invention.

[0033] Figure 4 It is a three-dimensional diagram of a blasting tube body according to an embodiment of the present invention.

[0034] Figure 5 It is a front view of a blasting tube body according to an embodiment of the present invention.

[0035] Figure 6 yes Figure 5 Section view along line AA.

[0036] Reference numerals:

[0037] Rock drilling and blasting device 100; drilling hole 200;

[0038] Explosion tube 1; explosion tube body 11; connection hole 111; connection protrusion 112; filling cavity 12;

[0039] Blasting medium layer 2;

[0040] Ignition head 3;

[0041] Oxidizing liquid injection system 4; storage device 41; injection pump 42; filling pipe 43; filling branch pipe 431; high-pressure hose 432;

[0042] Oxidizing liquid source 44; exhaust pipe 45;

[0043] Sealing layer 5;

[0044] Remote control detonation system 6; signal receiving device 61; remote control detonator 62. DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0046] Reference below Figure 1-Figure 6 A rock drilling and blasting device 100 according to an embodiment of the present invention is described.

[0047] The rock drilling and blasting device 100 according to the embodiment of the present invention comprises a blasting tube 1 , an ignition head 3 , an oxidizing liquid injection system 4 and a plurality of blasting medium layers 2 .

[0048] The blasting tube 1 is used to be installed in the borehole 200. The blasting tube 1 includes multiple sections of hard blasting tube bodies 11. The multiple sections of blasting tube bodies 11 are arranged in the borehole 200 in an end-to-end manner along the extension direction of the borehole 200. Each section of the blasting tube body 11 has a filling cavity 12, and the filling cavities 12 of each section of the blasting tube body 11 are interconnected; multiple blasting medium layers 2 are correspondingly arranged in the multiple blasting tube bodies 11; the ignition head 3 extends along the axial direction of the blasting tube body 11, a part of the ignition head 3 is arranged in the blasting medium layer 2, and the other part of the ignition head 3 extends out of the filling cavity 12; the oxidizing liquid injection system 4 is connected to the filling cavity 12.

[0049] The rock drilling and blasting device 100 of the embodiment of the present invention can greatly improve the penetration depth of the blasting tube 1 into the corresponding borehole 200 by forming a blasting tube 1 with multiple sections of blasting tube bodies 11 in an end-to-end manner along the extension direction of the borehole 200 (generally, a soft blasting tube 1 is only suitable for a borehole 200 with a depth of 4m-5m, and the blasting tube 1 formed by the multiple sections of hard blasting tube bodies 11 in the rock drilling and blasting device 100 of the embodiment of the present invention can reach a borehole 200 with a depth of 20m-30m), thereby allowing the blasting medium layer 2 to extend into a deeper borehole 200, and the explosion energy of the blasting medium layer 2 acts evenly around the wall of the borehole 200, so that the deep, large-scale or large-block rock can be broken evenly and is not easy to generate flying rocks, which has the advantages of good safety and low blasting cost.

[0050] In addition, dividing the blasting tube 1 into multiple sections of blasting tube bodies can help fill a portion of the blasting medium layer (combustible fibrous material or carbonaceous combustible material) into the corresponding blasting tube body 11, thereby improving the convenience of loading the blasting medium layer.

[0051] Therefore, the rock drilling and blasting device 100 of the embodiment of the present invention is suitable for blasting large rocks in deep layers, which can not only avoid the damage to the surrounding environment caused by the violent explosion, but also has the advantage of saving blasting costs.

[0052] like Figures 2 to 4 As shown, adjacent blasting tube bodies 11 are connected by threaded sealing.

[0053] The rock drilling and blasting device 100 of the embodiment of the present invention has the advantages of simple structure and good connection and sealing effects, by means of threaded sealing connection between adjacent blasting tubes 11 .

[0054] For example, the length of each section of the blasting tube body 11 is 2 m, the number of the blasting tubes 1 is ten, and the ten blasting tubes 1 are threadedly sealed in an end-to-end manner.

[0055] like Figure 3 and Figure 4As shown, the blasting tube body 11 has a first end and a second end oppositely disposed along its axial direction, the first end has a connecting protrusion 112, and the second end has a connecting hole 111, wherein the connecting protrusion 112 of one blasting tube 1 extends into the connecting hole 111 of the adjacent blasting tube 1.

[0056] In the rock drilling and blasting device 100 according to the embodiment of the present invention, adjacent blasting tubes 11 are connected via the connecting protrusions 112 and the connecting holes 111 , which can further improve the stability and convenience of the connection between the blasting tubes 11 .

[0057] Specifically, the connection protrusion 112 has an external thread, and the connection hole 111 has an internal thread, and the connection protrusion 112 of one blasting tube body 11 is threadedly connected to the connection hole 111 connected thereto.

[0058] The embodiments of the present invention are not limited thereto. For example, in other embodiments, adjacent blasting tubes 11 are sealed and connected by snapping or gluing.

[0059] The length of each section of the blasting tube body 11 is 1m-2m, the diameter of the blasting tube 1 is 40mm-120mm, and the total length of the blasting tube 1 is 20m-30m.

[0060] The rock drilling and blasting device 100 of the embodiment of the present invention has the advantage of being easy to transport and store by setting the length of each section of the blasting tube 11 to 1m-2m.

[0061] The diameter of the blasting tube 1 is 40mm-180mm, and the total length of the blasting tube 1 is 10m-30m. Therefore, it not only has the advantages of good blasting effect, but also has the advantages of high convenience in operation. For example, the total length of the blasting tube 1 can be 10m, 11m, 12m, 13m, 15m, 17m, 19m, 21m, 23mm, 25m, 26m, 27m, 28m, 29mm and 30m. For example, the diameter of the blasting tube 1 can be 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 120mm, 140mm, 160mm, 170mm, 180mm.

[0062] It can be understood that the depth of the borehole 200 is 10m-30m.

[0063] Each section of the blasting tube body 11 is a PVC tube body or a PE tube body. It can not only ensure the structural strength required for inserting into the drill hole 200, but also has the advantage of low cost. Compared with the metal tube body, it has the advantage of saving blasting costs. Moreover, the use of PVC tube body or PE tube body as the blasting tube body 11 can be produced by an injection molding process, which has the advantages of simple production process and low manufacturing cost.

[0064] like Figure 1As shown, there are multiple ignition heads 3, and the multiple ignition heads 3 are arranged one by one in the blasting medium layer 2, and the adjacent ignition heads 3 are connected in series through the foot wire. Therefore, the multiple blasting medium layers 2 can expand rapidly, thereby improving the instantaneous impact and blasting effect during rock blasting.

[0065] The rock drilling and blasting device 100 also includes a sealing layer 5. One end of the blasting tube 1 extends into the borehole 200, and the other end of the blasting tube 1 is sealed in the borehole 200. The sealing layer 5 is sealed and filled on the other end of the blasting tube 1. The thickness of the sealing layer 5 is 0.8m-1.5m.

[0066] The rock drilling and blasting device 100 of the embodiment of the present invention can improve the sealing effect and prevent the problem of gas overflow in the blasting medium layer 2 by filling the sealing layer 5 inside the other end of the blasting tube 1. In addition, the thickness of the sealing layer 5 is 0.8m-1.5m, which not only avoids the problem of poor sealing effect due to too small thickness of the sealing layer 5, but also avoids the problem of the sealing layer 5 being too thick and occupying the filling space of the blasting medium layer 2. Therefore, it has the advantages of good sealing and blasting effects.

[0067] Optionally, the sealing layer 5 is yellow mud or fine sand, which has the advantages of high convenience in operation and good sealing effect.

[0068] Furthermore, the blasting tube body 11 disposed at the top may be filled with yellow mud.

[0069] like Figure 1 and Figure 6 As shown, the blasting medium layer 2 includes an oxidizing liquid and a reducing absorbing layer. The reducing absorbing layer is filled in the filling cavity 12, and the oxidizing liquid is adsorbed on the reducing absorbing layer.

[0070] The rock drilling and blasting device 100 of the embodiment of the present invention can generate heat when encountering the starting ignition head 3 by using liquefied oxidizing liquid, so that the liquid oxidizing liquid in the filling cavity 12 of the blasting tube body 11 is instantly vaporized, the volume expands rapidly and the pressure increases sharply, thereby improving the crushing effect of large rocks.

[0071] Optionally, one end of the blasting tube 1 can extend to the bottom of the borehole 200 , thereby facilitating the oxidizing liquid to fill the filling chamber 12 .

[0072] Furthermore, the rock drilling and blasting device 100 of the embodiment of the present invention uses liquid oxygen and combustible fiber or carbonaceous combustible materials. After ignition, it has both the effect of gas expansion and the effect of high temperature combustion. It is chemical blasting, and the volume expands rapidly by about 800 times (compared with the use of carbon dioxide blasting, carbon dioxide blasting is the principle of physical gas expansion, which requires high pressure to punch open the blasting piece, and the expansion is about 600 times), and the pressure rises sharply. Therefore, it has the advantage of good rock blasting effect.

[0073] In addition, compared with carbon dioxide blasting, the present invention can save 50% of the blasting cost. For example, the carbon dioxide blaster needs to use high-strength steel to produce the pipe body, the steel cost is high, the production process of the carbon dioxide blaster is complicated, and the manufacturing cost is relatively high. The present invention uses PVC or PE materials, and the material cost and manufacturing cost are low.

[0074] like Figure 1 As shown, there are a plurality of blasting tubes 1 , and the plurality of blasting tubes 1 are arranged at intervals, with the interval between adjacent blasting tubes 1 being 2 m to 4 m.

[0075] The rock drilling and blasting device 100 of the embodiment of the present invention is provided with a plurality of blasting tubes 1, and the spacing between adjacent blasting tubes 1 is greater than 2m-4m, thereby avoiding the problem of waste caused by too small a distance between blasting tubes 1, and avoiding the problem of unsatisfactory blasting caused by too large a distance between blasting tubes 1.

[0076] For example, the intervals between adjacent blasting tubes 1 are 2.0 m, 2.5 m, 3.0 m, 3.5 m and 4.0 m.

[0077] Optionally, a plurality of bursting tubes 1 may be arranged in a plum blossom shape.

[0078] like Figure 1 and Figure 6 As shown, the ignition heads 3 corresponding to each blasting tube 1 are connected in series through foot wires, thereby improving the consistency of the start-up ignition time and improving the drilling and blasting effect.

[0079] like Figure 1 As shown, the oxidizing liquid injection system 4 includes a storage device 41, an injection pump 42, a filling pipe 43 and an oxidizing liquid source 44. The storage device 41 is connected to the filling chamber 12 through the filling pipe 43 so as to inject the oxidizing liquid into the reduction absorption layer. The oxidizing liquid source 44 is stored in the storage device 41, and the injection pump 42 is arranged on the filling pipe 43.

[0080] The rock drilling and blasting device 100 of the embodiment of the present invention has the advantage of high automation of filling the oxidizing liquid by dividing the oxidizing liquid injection system 4 into a storage device 41, an injection pump 42, a filling pipe 43 and an oxidizing liquid source 44.

[0081] Optionally, the filling pipe 43 includes a high-pressure hose 432 and a plurality of filling branch pipes 431, and the plurality of filling branch pipes 431 extend into the bottom of the bursting pipe 1 in correspondence with the plurality of bursting pipes 1, and each filling branch pipe 431 is connected to the storage device 41 through the high-pressure hose 432, and the injection pump 42 is arranged on the high-pressure hose 432. Thus, the oxidation liquid can be simultaneously filled into the plurality of bursting pipes 1, thereby improving the efficiency of filling the oxidation liquid.

[0082] like Figure 1 and Figure 2 As shown, the oxidizing liquid injection system 4 further includes an exhaust pipe 45 , one end of which is connected to the filling chamber 12 , and the other end of the exhaust pipe 45 penetrates the sealing layer 5 to extend into the blasting tube 1 .

[0083] Optionally, the length of the end of the exhaust pipe 45 located in the filling cavity 12 and exposed from the sealing layer 5 is 10 mm-100 mm.

[0084] Specifically, the filling branch pipe 431 and the exhaust pipe 45 are both connected to the filling chamber 12 through the sealing layer 5. When the oxidizing liquid injection system 4 is filled with liquid, light blue gas is observed to overflow from all the exhaust pipes 45, indicating that the liquid oxygen is basically filled in the blasting tube 1, the filling pump 42 is turned off, and the high-pressure hose 432 is removed.

[0085] The rock drilling and blasting device 100 also includes a remote control blasting system 6, which includes a signal receiving device 61 and a remote control blasting device 62. The signal receiving device 61 is connected to the ignition head 3 so as to start the ignition head 3 through the remote control blasting device 62. In this way, the safety of the drilling and blasting process can be improved. Specifically, before the remote control blasting device 62 starts the ignition head 3, all personnel in the blasting area are evacuated to 300 meters away, and the purpose of ignition and rock breaking can be achieved by starting the remote control blasting device 62.

[0086] The rock drilling and blasting method according to the embodiment of the present invention comprises the following steps:

[0087] S1: Drill 200 holes at a depth of 10m-30m on the working face platform;

[0088] S2: placing the blasting tubes 11 in the rock drilling and blasting device 100 according to any one of the above items into the borehole 200 in sequence in an end-to-end manner;

[0089] S3: the oxidizing liquid injection system 4 is connected to the filling chamber 12 so as to fill the filling chamber 12 with oxidizing liquid;

[0090] S4: igniting the ignition head 3 to detonate the rock drilling and blasting device 100.

[0091] Specifically, the rock drilling and blasting method according to the embodiment of the present invention comprises the following steps:

[0092] S1: Drill multiple holes 200 with a depth of 20m-30m in the target rock;

[0093] S2: Select a suitable blasting tube body 11 according to the depth and diameter of the borehole 200, pre-install the reduction absorption layer and the ignition head 3 into the filling cavity 12, and install one section of the blasting tube body 11 into the borehole 200 after sealing the bottom, and then take another section of the blasting tube 1 and seal it with the blasting tube 1 installed in the borehole 200 by threaded connection, and repeat this process until all the blasting tube bodies 11 are installed in the borehole 200, and install another blasting tube 1 in this way;

[0094] S3: Assemble the oxidizing liquid injection system 4, and connect the oxidizing liquid injection system 4 with the blasting tubes 1 through the high-pressure hose 432 and multiple liquid filling branch pipes 431, that is, the liquid filling branch pipes 431 and the blasting tubes 1 are extended to the bottom of the blasting tubes 1 one by one, and the upper end of the blasting tube 1 is sealed with a sealing layer 5 (yellow mud), and the exhaust pipe 45 is inserted into the sealing layer 5 and connected with the inside of the blasting tube 1, and the liquid injection pump 42 is turned on to fill liquid oxygen into each blasting tube 1. When light blue gas is observed to overflow from all the exhaust pipes 45, the liquid injection pump 42 is turned on;

[0095] S4: Evacuate all personnel in the blasting area to 300m away and activate the remote control detonator 62.

[0096] Optionally, the diameter of the borehole 200 is 50 mm-200 mm, and the diameter of the borehole 200 is 10 mm-20 mm larger than the diameter of the blasting tube 1 , so that the blasting tube 1 can be smoothly loaded into the borehole 200 .

[0097] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0098] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0099] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0101] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0102] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A rock drilling and blasting device, characterized in that: include: A blasting tube, the blasting tube is used to be installed in a borehole, the blasting tube comprises a plurality of hard blasting tube bodies, the plurality of blasting tube bodies are arranged in the borehole in an end-to-end manner along the extension direction of the borehole, each blasting tube body has a filling cavity, and the filling cavities of each blasting tube body are interconnected, the blasting tube body has a first end and a second end arranged oppositely along its axial direction, the first end has a connecting protrusion, and the second end has a connecting hole, the connecting protrusion of one blasting tube extends into the connecting hole of an adjacent blasting tube, the length of each blasting tube body is 1m-2m; the diameter of the blasting tube is 40mm-180mm, and the total length of the blasting tube is 10m-30m; A plurality of blasting medium layers, wherein the plurality of blasting medium layers are correspondingly arranged in the plurality of blasting tube bodies, the blasting medium layers include an oxidizing liquid and a reducing absorbing layer, the reducing absorbing layer is filled in the filling cavity, and the oxidizing liquid is adsorbed on the reducing absorbing layer; An ignition head, wherein the ignition head extends along the axial direction of the blasting tube body, a part of the ignition head is arranged in the blasting medium layer, and another part of the ignition head extends out of the filling cavity, the ignition head has a plurality of ignition heads, and the plurality of ignition heads are arranged one by one in the blasting medium layer, and adjacent ignition heads are connected in series through foot wires; an oxidizing liquid injection system, the oxidizing liquid injection system being in communication with the filling chamber; Sealing layer, one end of the blasting tube can extend into the bottom of the borehole, the other end of the blasting tube is sealed in the borehole, the sealing layer is sealed and filled in the other end of the blasting tube, and the thickness of the sealing layer is 0.8m-1.5m.

2. The rock drilling and blasting device according to claim 1, characterized in that: Adjacent blasting tube bodies are sealed and connected by means of threads, buckles or adhesives.

3. The rock drilling and blasting device according to claim 1, characterized in that: Each section of the blasting pipe body is a PVC pipe body or a PE pipe body.

4. The rock drilling and blasting device according to claim 1, characterized in that: The oxidizing liquid injection system includes a storage device, an injection pump, a filling tube and an oxidizing liquid source. The storage device is connected to the filling cavity through the filling tube so as to inject the oxidizing liquid into the reduction absorption layer. The oxidizing liquid source is stored in the storage device, and the injection pump is arranged on the filling tube.

5. The rock drilling and blasting device according to claim 4, characterized in that: The oxidizing liquid injection system also includes an exhaust pipe, one end of which is connected to the filling chamber, and the other end of which penetrates the sealing layer to extend into the blasting tube.

6. The rock drilling and blasting device according to claim 4, characterized in that: The oxidizing liquid is liquid oxygen; and / or the reducing absorption layer is a fibrous combustible material or a carbonaceous combustible material.

7. The rock drilling and blasting device according to claim 1, characterized in that: There are a plurality of blasting tubes, and the plurality of blasting tubes are arranged at intervals, and the distance between adjacent blasting tubes is 2m-4m; And / or, the ignition heads corresponding to each of the bursting tubes are connected in parallel via foot wires; And / or, it also includes a remote control detonation system, which includes a signal receiving device and a remote control detonator, and the signal receiving device is connected to the ignition head so as to start the ignition head through the remote control detonator.

8. A method for rock drilling and blasting, characterized in that: The steps include: S1: Drilling holes with a depth of 20m-30m on the working face platform; S2: pre-loading a portion of the blasting medium layer into the filling cavity, and sequentially placing the blasting tubes in the rock drilling and blasting device according to any one of claims 1 to 7 into the borehole in an end-to-end manner; S3: the oxidizing liquid injection system is connected to the filling chamber so as to fill another part of the blasting medium layer into the filling chamber; S4: activating the ignition head to detonate the rock drilling and blasting device.

9. The rock drilling and blasting method according to claim 8, characterized in that: The diameter of the drill hole is 50mm-200mm, and the diameter of the drill hole is 10mm-20mm larger than the diameter of the blasting tube.

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