Charging equipment for hard rock roadway presplitting loosening blasting

Abstract

The utility model provides charging equipment for hard rock roadway presplitting loosening blasting, which belongs to the technical field of engineering blasting and comprises a bottom ring, a top ring is arranged on the upper side of the bottom ring, a middle ring is arranged between the bottom ring and the top ring, and the bottom ring is fixedly connected with the middle ring through a first connecting rod. The top ring is fixedly connected with the middle ring through a second connecting rod, a set of bottom sleeves are evenly and fixedly connected in the bottom ring, inserting rings are evenly and fixedly connected in the top ring, and casing pipes are arranged between the bottom sleeves and the inserting rings. Through the arrangement of the bottom ring, the top ring, the middle ring, the first connecting rod, the second connecting rod, the bottom sleeve, the inserting ring and the casing pipes, the casing pipes are evenly arranged, the uniformity of blasting presplitting is guaranteed, the blasting effect is improved, the multiple casing pipes can be arranged at a time, the blasting presplitting efficiency is improved, and the blasting effect is improved. The problem that in the prior art, the blasting pre-splitting effect is poor due to the fact that the arrangement uniformity of the casing pipes is poor is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the engineering blasting technique field, and specifically, relates to a charging equipment for hard rock roadway pre-splitting loose blasting. BACKGROUND

[0002] At present, the fully-mechanized excavation method has been popularized and used in coal mine rock roadway excavation. For the soft rock roadway with the Protodyakonov coefficient less than 6, the fully-mechanized excavator can usually cut smoothly and can realize high excavation efficiency. However, when encountering hard rock with the Protodyakonov coefficient greater than 6, the fully-mechanized excavator becomes difficult to cut such rock, which not only reduces the excavation efficiency of the fully-mechanized excavator, but also consumes a large amount of saw teeth, thereby increasing the construction cost investment. In view of this situation, the advanced pre-splitting loose blasting method is usually adopted, that is, before the fully-mechanized excavator is excavated, blast holes are drilled at the excavation section, and then charging and blasting are performed to produce blast-induced cracks around the blast holes, so as to reduce the hardness of the rock mass in the section and improve the operation efficiency of the fully-mechanized excavator and reduce the consumption of saw teeth.

[0003] After searching, the patent with the patent application number CN202222998659.3 discloses a charging equipment for hard rock roadway pre-splitting loose blasting, which comprises a blast hole and an energy-gathering charge column assembly. The energy-gathering charge column assembly comprises a sleeve, industrial explosives, and a detonating cord. The sleeve is located in the blast hole, the industrial explosives are located in the inside of the sleeve, and the detonating cord is located on the central axis of the sleeve. A plurality of sleeves are arranged in the blast hole. The sleeves are made of PVC material and filled with industrial explosives. The central part is provided with a detonating cord. The utility model can improve the detonation velocity of industrial explosives by igniting the detonating cord. The increase of the detonation velocity can significantly increase the detonation pressure of the industrial explosives, thereby increasing the blasting cracking range of the explosives and improving the pre-splitting loose blasting effect of the hard rock roadway. The detonation wave generated by the industrial explosives can collapse the high-speed high-pressure jet formed by the sleeve, thereby increasing the blasting cracking range of the explosives and improving the pre-splitting loose blasting effect of the hard rock roadway. However, the following defects still exist:

[0004] (1) The charging equipment in the prior art arranges the sleeves in the blast hole. The spacing between the adjacent sleeves is large, the uniformity is poor, the effect of pre-splitting blasting is poor, and the sleeves need to be arranged in the blast hole for multiple times, so the working efficiency is low.

[0005] (2) The sleeve arrangement equipment in the prior art needs to arrange the detonating detonator at the center of the sleeve. It is difficult to accurately arrange the position of the detonating detonator during arrangement, which leads to poor blasting effect.

[0006] Therefore, we improve it and propose a charging equipment for hard rock roadway pre-splitting loose blasting. UTILITY MODEL CONTENTS

[0007] The utility model discloses a purpose at: for the current existing casing laying uniformity is poor and leads to the problem of blasting effect being not good, many times casing laying efficiency is low and is inconvenient accurate laying detonator.

[0008] In order to realize the utility model purpose above, the utility model provides following technical scheme:

[0009] Hard rock roadway pre-splitting loosening blasting is equipped with charging equipment to improve the above problem.

[0010] The utility model discloses a specific is such:

[0011] Including bottom ring, the upside of bottom ring is equipped with top ring, is equipped with intermediate ring between bottom ring and top ring, bottom ring is fixedly connected with intermediate ring through first connecting rod, top ring is fixedly connected with intermediate ring through second connecting rod, a group of bottom cover is uniformly fixedly connected in bottom ring, the plug ring is uniformly fixedly connected in top ring, and the casing is equipped between bottom cover and plug ring, the periphery of bottom ring and intermediate ring is equipped with auxiliary structure, the center of intermediate ring is equipped with center tube, two link rods are fixedly connected to the symmetry on center tube, and the inner side wall of intermediate ring is fixedly connected with the outer end of two link rods respectively.

[0012] As the preferred technical scheme of the utility model, the auxiliary structure includes three mounting grooves that are evenly arranged on the outer side wall of bottom ring and intermediate ring, the mounting groove is fixedly connected with the damping rod, the outer end of damping rod is fixedly connected with the connecting piece, the spring is sleeved on the damping rod, and the two ends of spring are fixedly connected with mounting groove and connecting piece respectively, and the outer side wall of connecting piece is fixedly connected with the guide wheel.

[0013] As the preferred technical scheme of the utility model, a group of through holes are evenly arranged on the center tube.

[0014] As the preferred technical scheme of the utility model, a group of lifting lugs are fixedly connected to the outer peripheral side wall of top ring.

[0015] As the preferred technical scheme of the utility model, a group of first fixed ears are fixedly connected to the outer side wall of top ring, the outer side of top ring is equipped with the limit ring, a group of second fixed ears are fixedly connected to the limit ring, and the second fixed ear is connected with the first fixed ear through bolt.

[0016] As the preferred technical scheme of the utility model, the size of bottom ring, top ring and intermediate ring is same, and the energy gathering groove is arranged on casing.

[0017] Compared with the prior art, the utility model has the advantages of:

[0018] In the scheme of the utility model:

[0019] 1. Through the setting of the bottom ring, the top ring, the middle ring, the first connecting rod, the second connecting rod, the bottom sleeve, the insert ring and the casing pipe, uniform casing pipe layout is realized, the uniformity of blasting pre-splitting is guaranteed, the blasting effect is improved, multiple casing pipes can be laid in a single time to improve the efficiency of blasting pre-splitting, and the problem of poor blasting pre-splitting effect caused by poor uniformity of casing pipe layout in the prior art is solved.

[0020] 2. Through the setting of the middle ring, the center pipe and the connecting rod, the detonating detonator is quickly laid, the laying accuracy is high, the difficulty of detonating detonator laying is reduced, the blasting pre-splitting effect is improved, and the problem of difficult accurate laying of detonating detonator in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 An overall structure schematic view is provided for the utility model.

[0022] Figure 2 A structure schematic view without casing pipe is provided for the utility model.

[0023] Figure 3 A bottom structure schematic view is provided for the utility model.

[0024] Figure 4 A structure schematic view is provided for the utility model. Figure 3 An enlarged view of A in the middle.

[0025] Figure 5 A separation structure schematic view is provided for the utility model.

[0026] Figure 6 A top view structure schematic view is provided for the utility model.

[0027] Indications in the drawing:

[0028] 1, bottom ring; 2, top ring; 3, middle ring; 4, first connecting rod; 5, second connecting rod; 6, bottom sleeve; 7, insert ring; 8, casing pipe; 9, auxiliary structure; 901, mounting groove; 902, damping rod; 903, connecting piece; 904, spring; 905, guide wheel; 10, center pipe; 11, connecting rod; 12, through hole; 13, lifting lug; 14, first fixed lug; 15, limiting ring; 16, second fixed lug. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments.

[0030] As Figure 1 , Figure 2 ,Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this embodiment proposes a charging device for pre-splitting and loosening blasting in hard rock tunnels, including a bottom ring 1, a top ring 2 on the upper side of the bottom ring 1, and an intermediate ring 3 between the bottom ring 1 and the top ring 2. The bottom ring 1 is fixedly connected to the intermediate ring 3 by a first connecting rod 4, and the top ring 2 is fixedly connected to the intermediate ring 3 by a second connecting rod 5. A set of bottom sleeves 6 are uniformly fixedly connected inside the bottom ring 1, and insert rings 7 are uniformly fixedly connected inside the top ring 2. A sleeve 8 is provided between the bottom sleeves 6 and the insert rings 7. An auxiliary structure 9 is provided on the outer periphery of both the bottom ring 1 and the intermediate ring 3. A central tube 10 is provided at the center of the intermediate ring 3. Two connecting rods 11 are symmetrically and fixedly connected to the central tube 10. The outer ends of the two connecting rods 11 are fixedly connected to the inner sidewall of the intermediate ring 3, respectively. The bottom sleeves 6 and insert rings 7 facilitate the installation of the sleeve 8, ensuring the uniformity of the sleeve 8 installation, thereby improving the pre-splitting effect. The sleeve 8 is filled with gelatinous explosive, and a detonating cord is provided at the center of the sleeve 8.

[0031] like Figure 1 and Figure 4 As shown, in a preferred embodiment, based on the above method, the auxiliary structure 9 further includes three mounting grooves 901 evenly opened on the outer walls of the bottom ring 1 and the middle ring 3. A damping rod 902 is fixedly connected to each mounting groove 901. A connecting piece 903 is fixedly connected to the outer end of the damping rod 902. A spring 904 is sleeved on the damping rod 902. The two ends of the spring 904 are fixedly connected to the mounting groove 901 and the connecting piece 903 respectively. A guide wheel 905 is fixedly connected to the outer wall of the connecting piece 903. The spring 904 and the damping rod 902 can provide elastic support for the guide wheel 905, so that the guide wheel 905 can be installed close to the inner wall of the blast hole.

[0032] like Figure 2 As shown, in a preferred embodiment, based on the above method, a set of through holes 12 are evenly provided on the central tube 10; the through holes 12 can reduce the weight of the central tube 10.

[0033] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, a set of lifting lugs 13 are evenly fixedly connected to the outer peripheral sidewall of the top ring 2; the lifting lugs 13 facilitate its lifting, installation and transportation.

[0034] like Figure 1 and Figure 5As shown, in a preferred embodiment, based on the above method, a set of first fixing ears 14 are uniformly fixedly connected to the outer sidewall of the top ring 2, and a limiting ring 15 is provided on the outer side of the top ring 2. A set of second fixing ears 16 are uniformly fixedly connected to the limiting ring 15, and the second fixing ears 16 are connected to the first fixing ears 14 by bolts. The limiting ring 15 facilitates the limiting of the sleeve 8, prevents it from falling out, and ensures the stability of the sleeve 8.

[0035] like Figure 1 and Figure 2 As shown, in a preferred embodiment, based on the above method, the bottom ring 1, top ring 2 and middle ring 3 are of the same size, and the sleeve 8 is provided with a shaped charge groove; the shaped charge groove can increase the cracking range of the explosive blasting and improve the pre-splitting and loosening blasting effect of hard rock roadways. The sleeve 8 and the shaped charge groove are both existing technologies.

[0036] Specifically, when using the charging equipment for pre-splitting and loosening blasting in hard rock tunnels: Gel-like explosives are filled into the casing 8, and a detonating cord is placed at the center of the casing 8. The casing 8 is then inserted into the bottom sleeve 6 and the insertion ring 7. After installing the casing 8 in sequence, the second fixing lug 16 is connected to the first fixing lug 14 with bolts, thereby limiting the position of the casing 8 by the limiting ring 15 to prevent it from falling out. Water-based drilling mud is first injected into the blast hole, and then the bottom ring 1, top ring 2, middle ring 3, and casing 8 are placed into the blast hole. During the placement process, the guide wheel 905 slides down in close contact with the inner wall of the blast hole, placing the equipment in the center of the blast hole. Then, the detonator is placed in the central tube 10, and then water-based drilling mud is filled into the blast hole. After filling a certain amount, ordinary drilling mud is filled on the outside of the top ring 2 to ensure the pre-splitting effect and improve the blasting efficiency.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A charging device for pre-splitting and loosening blasting in hard rock tunnels, comprising a bottom ring (1), characterized in that, The bottom ring (1) has a top ring (2) on its upper side. An intermediate ring (3) is provided between the bottom ring (1) and the top ring (2). The bottom ring (1) is fixedly connected to the intermediate ring (3) through a first connecting rod (4). The top ring (2) is fixedly connected to the intermediate ring (3) through a second connecting rod (5). A set of bottom sleeves (6) are uniformly fixedly connected inside the bottom ring (1). An insert ring (7) is uniformly fixedly connected inside the top ring (2). A sleeve (8) is provided between the bottom sleeve (6) and the insert ring (7). An auxiliary structure (9) is provided on the outer periphery of both the bottom ring (1) and the intermediate ring (3). A central tube (10) is provided at the center of the intermediate ring (3). Two connecting rods (11) are symmetrically and fixedly connected on the central tube (10). The outer ends of the two connecting rods (11) are fixedly connected to the inner sidewall of the intermediate ring (3).

2. The charging equipment for pre-splitting and loosening blasting in hard rock tunnels according to claim 1, characterized in that, The auxiliary structure (9) includes three mounting grooves (901) evenly opened on the outer side walls of the bottom ring (1) and the middle ring (3). Each mounting groove (901) is fixedly connected to a damping rod (902). The outer end of the damping rod (902) is fixedly connected to a connecting piece (903). A spring (904) is sleeved on the damping rod (902). The two ends of the spring (904) are fixedly connected to the mounting groove (901) and the connecting piece (903) respectively. A guide wheel (905) is fixedly connected to the outer side wall of the connecting piece (903).

3. The charging equipment for pre-splitting and loosening blasting in hard rock tunnels according to claim 1, characterized in that, A set of through holes (12) are evenly opened on the central tube (10).

4. The charging equipment for pre-splitting and loosening blasting in hard rock tunnels according to claim 1, characterized in that, A set of lifting lugs (13) are uniformly fixedly connected to the outer peripheral sidewall of the top ring (2).

5. The charging equipment for pre-splitting and loosening blasting in hard rock tunnels according to claim 1, characterized in that, A set of first fixing ears (14) are uniformly fixedly connected to the outer side wall of the top ring (2). A limiting ring (15) is provided on the outer side of the top ring (2). A set of second fixing ears (16) are uniformly fixedly connected to the limiting ring (15). The second fixing ears (16) are connected to the first fixing ears (14) by bolts.

6. The charging equipment for pre-splitting and loosening blasting in hard rock tunnels according to claim 1, characterized in that, The bottom ring (1), top ring (2) and middle ring (3) are the same size, and the sleeve (8) is provided with an energy-concentrating groove.

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