A water pressure blasting charge structure

Abstract

The utility model discloses a water pressure blasting charge structure, including semicircular cylinder frame and the first water bag section, first cartridge section, second cartridge section, second water bag section, stemming section who are arranged in sequence in semicircular cylinder frame, wherein, first cartridge section and second cartridge section are set apart and are connected through detonating cord between the interval, and semicircular cylinder frame is set apart to a plurality of section separation protruding piece along the longitudinal direction, and the installation space of each section is constituted between the adjacent section separation protruding piece. The utility model has the advantages of: improve the utilization of explosive energy, thereby reducing the explosive dosage, reduce the disturbance and damage to the surrounding rock, fully protect the surrounding rock, make full use of the bearing capacity of surrounding rock itself, water mist dust compression ventilation time, improve the operation environment, shorten the cycle time, speed up the construction progress, adopt semicircular cylinder frame to place each section to realize disposable installation in the borehole, and the hollow frame structure does not affect the energy utilization of explosive.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to a hydraulic blasting charge structure. Background Technology

[0002] Existing tunnel blasting construction mainly adopts ordinary "pre-splitting blasting" and "smooth blasting" charge structures and blasting designs. Over the years, the blasting effect and on-site construction environment have remained stagnant, and a mature and effective set of construction blasting design and on-site blasting management has not been formed.

[0003] Hydraulic blasting technology is actually an improvement on smooth blasting technology: First, it uses machine-made mud to block the blast hole, improving the utilization rate of explosive energy; second, it uses water bags in the blast hole to reduce dust during blasting; third, while hydraulic blasting technology is not technically complex, requires little investment, and is not difficult to implement, its combination with smooth blasting technology offers many advantages.

[0004] Based on this, when loading explosives for hydraulic blasting, it is currently necessary to install the explosives, water bags, and drilling mud sequentially in the borehole. This distributed installation is inconvenient and cannot be carried out directly in one go. Summary of the Invention

[0005] The purpose of this utility model is to address the shortcomings of the prior art by providing a hydraulic blasting charge structure. This hydraulic blasting charge structure uses a semi-cylindrical frame to place each segment for one-time installation in the borehole, places water bags in the borehole to reduce dust generated during blasting, and places machine-made blasting mud in the last segment of the charge structure for sealing to improve the energy utilization rate of the explosive.

[0006] The objective of this utility model is achieved through the following technical solution: A hydraulic blasting charge structure includes a semi-cylindrical frame and a first water bag segment, a first explosive cartridge segment, a second explosive cartridge segment, a second water bag segment, and a stemming mud segment arranged sequentially within the semi-cylindrical frame. The first and second explosive cartridge segments are spaced apart and connected in series by a detonating cord. Several segment-separating protrusions are spaced longitudinally within the semi-cylindrical frame, and adjacent segment-separating protrusions form the installation space for each segment.

[0007] The radial height of the segmental dividing protrusion is between 1 / 4 and 1 / 3 of the radius of the semi-cylindrical frame.

[0008] The total length of the hydraulic blasting charge structure is 1.6m, wherein the length of the first water bag segment is 0.2m, the combined space length of the first and second explosive cartridge segments is 0.8m, the combined space length of the second water bag segment and the stemming clay segment is 0.6m, and the length of the first explosive cartridge segment is twice the length of the second explosive cartridge segment.

[0009] The first water bag segment consists of a plastic bag and water filled in it, and the structure of the second water bag segment is the same as that of the first water bag segment.

[0010] The advantages of this utility model are: (1) It improves the utilization rate of explosive energy, thereby reducing the amount of explosive used, reducing the disturbance and damage to the surrounding rock, fully protecting the surrounding rock, and making full use of the bearing capacity of the surrounding rock itself; reducing the amount of explosive used and reducing blasting vibration is the key to ensuring that nearby buildings are not affected or damaged. (2) Effectively control under-excavation and ensure smooth perimeter contour, thereby ensuring that the initial support and lining thickness meet the design requirements, the spray barrel thickness meets the design requirements, the sprayed concrete surface is smooth, and the waterproof layer construction quality is guaranteed, thus avoiding the hidden danger of water leakage in the hole due to uneven sprayed concrete surface damaging the waterproof layer. (3) By improving the utilization rate of blast holes, reducing residual holes and increasing the advance, the total number of operation cycles is reduced, thereby greatly improving the overall progress speed of tunnel construction; the surrounding rock is more uniformly broken, the proportion of large pieces is reduced, and the slag removal speed is accelerated; water mist dust suppression compresses ventilation time, improves the working environment, shortens the cycle time, and accelerates the construction progress. (4) A semi-cylindrical frame is used to place each segment to achieve one-time installation in the borehole, and the hollow frame structure will not affect the energy utilization rate of the explosive. Attached Figure Description

[0011] Figure 1 This is a longitudinal sectional view of the hydraulic blasting charge structure of this utility model; Figure 2 This is a perspective view of the semi-cylindrical frame in this utility model; like Figure 1-2 The markings in the figure are as follows: First water bag segment 1, First explosive cartridge segment 2, Hollow segment 3, Second explosive cartridge segment 4, Second water bag segment 5, Clay segment 6, Detonating cord 7, Segment separator protrusion 8, Semi-cylindrical frame 9, Longitudinal rod 91, Semi-circular ring 92. Detailed Implementation

[0012] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art: Example: Figure 1 ,2 As shown, this embodiment specifically relates to a hydraulic blasting charge structure, which mainly includes a semi-cylindrical frame 9 and a first water bag segment 1, a first explosive cartridge segment 2, a hollow section 3, a second explosive cartridge segment 4, a second water bag segment 5, and a blasting mud segment 6 arranged sequentially in the semi-cylindrical frame 9.

[0013] like Figure 1 , 2 As shown, the semi-cylindrical frame 9 is made of plastic and consists of several longitudinal rods 91 and several semi-circular rings 92 to form an open semi-cylindrical body. To facilitate the installation and positioning of each segment, segment-separating protrusions 8 are provided on each semi-circular ring 92. The height of the segment-separating protrusions 8 is between 1 / 4 and 1 / 3 of the radius of the semi-cylindrical frame 9, mainly serving a limiting function and not requiring complete sealing. Through the design of the semi-cylindrical frame 9, the open frame structure does not affect the energy utilization rate of the explosive when the segments are integrated and installed at once.

[0014] like Figure 1 , 2 As shown, the first water bag segment 1 and the second water bag segment 5 have the same structure. Specifically, the water bag segment consists of a plastic bag filled with water, installed at the corresponding position within the semi-cylindrical frame 9, and secured by segment-separating protrusions 8. Placing the water bag in the blast hole helps reduce dust during blasting. The first explosive cartridge segment 2 and the second explosive cartridge segment 4 are explosive loading sections, with a hollow section 3 between them. The purpose of the hollow section 3 is to ensure that the blasting range of the two explosive cartridge segments covers the hollow section 3, thus eliminating the need for explosives and saving on usage. The clay segment 6 is machine-made clay. The raw materials for machine-made clay are soil, sand, and water, with a mass ratio of 0.75:0.1:0.15. Clay is preferred for the soil, and fine sand, preferably river sand, is preferred. There are no special requirements for the water content.

[0015] like Figure 1 , 2 As shown, the total length of the hydraulic blasting charge structure is 1.6m, of which the length of the first water bag segment 1 is 0.2m, the combined space length of the first explosive cartridge segment 2, the hollow section 3 and the second explosive cartridge segment 4 is 0.8m, the combined space length of the second water bag segment 5 and the stemming mud segment 6 is 0.6m, and the length of the first explosive cartridge segment 2 is twice the length of the second explosive cartridge segment 4.

[0016] like Figure 1 , 2 As shown, the construction process using the hydraulic blasting charge structure in this embodiment is as follows: drilling and blasting design → construction preparation (making of stemming material, making of water bags, etc., and assembling them into an integrated hydraulic blasting charge structure) → positioning of the drilling rig → hole cleaning → construction preparation → installation of the hydraulic blasting charge structure in this embodiment → networking → detonation → slag removal → end of drilling and blasting cycle.

[0017] The beneficial effects of this embodiment are: (1) It improves the utilization rate of explosive energy, thereby reducing the amount of explosive used, reducing the disturbance and damage to the surrounding rock, fully protecting the surrounding rock, and making full use of the bearing capacity of the surrounding rock itself; reducing the amount of explosive used and reducing blasting vibration is the key to ensuring that nearby buildings are not affected or damaged. (2) Effectively control under-excavation and ensure smooth perimeter contour, thereby ensuring that the initial support and lining thickness meet the design requirements, the spray barrel thickness meets the design requirements, the sprayed concrete surface is smooth, and the waterproof layer construction quality is guaranteed, thus avoiding the hidden danger of water leakage in the hole due to uneven sprayed concrete surface damaging the waterproof layer. (3) By improving the utilization rate of blast holes, reducing residual holes and increasing the advance, the total number of operation cycles is reduced, thereby greatly improving the overall progress speed of tunnel construction; the surrounding rock is more uniformly broken, the proportion of large pieces is reduced, and the slag removal speed is accelerated; water mist dust suppression compresses ventilation time, improves the working environment, shortens the cycle time, and accelerates the construction progress. (4) A semi-cylindrical frame is used to place each segment to achieve one-time installation in the borehole, and the hollow frame structure will not affect the energy utilization rate of the explosive.

Claims

1. A hydraulic blasting charge structure, characterized in that: The hydraulic blasting charge structure includes a semi-cylindrical frame and a first water bag segment, a first explosive cartridge segment, a second explosive cartridge segment, a second water bag segment, and a stemming mud segment arranged sequentially within the semi-cylindrical frame; wherein, the first explosive cartridge segment and the second explosive cartridge segment are spaced apart and connected in series by a detonating cord, and a number of segment-separating protrusions are arranged longitudinally in the semi-cylindrical frame, with adjacent segment-separating protrusions forming the installation space for each segment.

2. The hydraulic blasting charge structure according to claim 1, characterized in that... The radial height of the segmental dividing protrusion is between 1 / 4 and 1 / 3 of the radius of the semi-cylindrical frame.

3. The hydraulic blasting charge structure according to claim 2, characterized in that... The total length of the hydraulic blasting charge structure is 1.6m, wherein the length of the first water bag segment is 0.2m, the combined space length of the first and second explosive cartridge segments is 0.8m, the combined space length of the second water bag segment and the stemming mud segment is 0.6m, and the length of the first explosive cartridge segment is twice the length of the second explosive cartridge segment.

4. The hydraulic blasting charge structure according to claim 3, characterized in that... The first water bag segment consists of a plastic bag and water filled in it, and the structure of the second water bag segment is the same as that of the first water bag segment.

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