Hole pile rock fracturing grain

Abstract

The hole pile rock fracturing grain comprises a column pipe, an upper plug and a lower plug are installed at an upper opening and a lower opening of the column pipe respectively, the lower half portion of the interior of the column pipe is filled with an expansion pipe, the expansion pipe is filled with a carbon dioxide agent, the upper half portion of the interior of the column pipe is filled with a filling material, and the filling material is filled with a filling material. The carbon dioxide medicament is connected with a detonating cord, the detonating cord sequentially penetrates through the filling material and the upper plug, three circles of annularly distributed blast holes are formed in the upper plug, the outer circle of blast holes are peripheral holes, the middle circle of blast holes are auxiliary holes, and the inner circle of blast holes are slotting holes. The sensor is difficult to burn in an open-air environment (outside holes), has no ignition head sensitivity, detonator sensitivity and explosive sensitivity, is identified as an air-transportable 1.4-item compatible S level through detection of the National Civil Explosion Detection Center of Nanjing University, has no explosiveness and is extremely high in safety. And the device can be excited only when the device is densely filled in a blast hole, so that the rock cracking requirement is met.

Description

Technical Field

[0001] The invention belongs to the technical field of rock-fracturing charge expansion fracturing, and in particular relates to a pile rock-fracturing charge. Background Art

[0002] Rock blasting generally uses blasting explosives. The explosive tubes currently used have a low safety factor and are very easy to explode. There are very strict requirements for their placement, but explosions still often occur in mining projects.

[0003] Therefore, we propose a bored pile rock fracturing charge to solve the above problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a hole pile rock fracturing charge column.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A bored pile rock fracturing charge column comprises a column tube, wherein an upper plug and a lower plug are installed at the upper opening and the lower opening of the column tube respectively, an expansion tube is filled in the lower half of the column tube, a carbon dioxide agent is filled in the expansion tube, a filling material is filled in the upper half of the column tube, a detonating wire is connected to the carbon dioxide agent, and the detonating wire passes through the filling material and the upper plug in sequence, and three circles of annularly distributed blastholes are opened on the upper plug, wherein the outer circle blastholes are peripheral holes, the middle circle blastholes are auxiliary holes, and the inner circle blastholes are groove holes.

[0007] Furthermore, the filling material includes sand, clay and water.

[0008] Furthermore, the ratio of sand, clay and water is 4:5:1.

[0009] Furthermore, the number of the groove eye annular array is 3-6, the number of the auxiliary eye annular array is 3-5, and the number of the peripheral eye annular array is 7-10.

[0010] Furthermore, the groove eye is in an outward-facing O-shaped shape.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The invention is difficult to burn in an open-air environment (outside the hole), has no ignition head sensitivity, no detonator sensitivity, and no explosive sensitivity. It has been tested by the National Civil Explosives Testing Center of Nanjing University of Science and Technology and has been identified as 1.4-item compatible S level for air transportation. It is not explosive and has extremely high safety. It can only be stimulated when it is densely packed in the blasthole to meet the needs of rock fracturing. Compared with traditional technologies, it has the following advantages:

[0013] (1) The fracturing energy is controllable, the blasting vibration is negligible, the noise is low, and there is basically no flying rocks.

[0014] (2) The warning range can be controlled within 30m to avoid frequent evasion of artillery fire and achieve continuous operation.

[0015] (3) The product is highly safe. It is not a pyrotechnic product and is very insensitive outside the blast hole. It is extremely safe in production, storage, transportation and use.

[0016] (4) The operation is simple and blasters can easily master it after training.

[0017] (5) The approval procedures are simple. Since this product does not fall into the category of explosives, construction can be organized immediately after reporting to the local public security department and obtaining approval. The transportation, storage, and use of related rock-breaking equipment do not need to be strictly supervised according to the explosives process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the present invention;

[0019] Figure 2 A top view of the present invention;

[0020] Figure 3 Schematic diagrams of Examples 1 to 4 of the present invention. DETAILED DESCRIPTION

[0021] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] See also Figure 1-2 The present invention provides a bored pile rock fracturing charge column, comprising a column tube 1, wherein the upper opening and the lower opening of the column tube 1 are respectively installed with an upper plug 3 and a lower plug 2, the lower half of the interior of the column tube 1 is filled with an expansion tube 4, the expansion tube 4 is filled with a carbon dioxide agent, the upper half of the interior of the column tube 1 is filled with a filling material 4, the carbon dioxide agent is connected with a detonating wire 6, the detonating wire 6 passes through the filling material 4 and the upper plug 3 in sequence, and three circles of annularly distributed blastholes are opened on the upper plug 3, the outer circle blastholes are peripheral holes 7, the middle circle blastholes are auxiliary holes 8, and the inner circle blastholes are groove holes 9.

[0023] Among them, the filling material 4 includes sand, clay and water, and the ratio of the three is 4:5:1. There are 3-6 groove holes 9 in a circular array and in an outward-facing octave shape. There are 3-5 auxiliary holes 8 in a circular array, and there are 7-10 peripheral holes 7 in a circular array.

[0024] When charging, the peripheral holes 7, auxiliary holes 8, and slot holes 9 are all filled with tubes in a continuous reverse direction. The peripheral holes 7 are filled with tubes at intervals, that is, one empty hole and one loaded hole, and the blasthole is blocked. The filling material 4 is made into mud strips in advance and blocked with mud strips.

[0025] The blastholes are drilled with a handheld rock drill, with a hole diameter of 35-40 mm and a blasthole depth of 0.8 m for the peripheral hole 7, 1-1.2 m for the auxiliary hole 8, and 1-1.2 m for the slot hole 9.

[0026] During blasting, serial connection is adopted. No matter how many expansion tubes there are, only two wires are connected to the detonator in the end. The detonation sequence is the groove hole 9, the auxiliary hole 8, and the peripheral hole 7.

[0027] Example 1

[0028] See also Figure 3 The diameter of the entire pipe column 1 is 2.2m, the number of peripheral eyes 7 is 10, the spacing between adjacent ones is 0.49m, the number of auxiliary eyes 8 is 6, the number of groove eyes 9 is 4, the spacing between the peripheral eye 7 and its adjacent auxiliary eye 8 is 0.3m, the spacing between the peripheral eye 7 and the outer edge of the pipe column 1 is 0.25m, the spacing between the auxiliary eye 8 and its adjacent groove eye 9 is 0.38m, the four groove eyes 9 are distributed in a cross shape, and the spacing between each groove eye 9 and the center of the pipe column 1 is 0.2m.

[0029] Example 2

[0030] See also Figure 3 The diameter of the entire pipe column 1 is 2m, the number of peripheral eyes 7 is 10, the spacing between adjacent ones is 0.45m, the number of auxiliary eyes 8 is 5, the number of groove eyes 9 is 4, the spacing between the peripheral eye 7 and its adjacent auxiliary eye 8 is 0.25m, the spacing between the peripheral eye 7 and the outer edge of the pipe column 1 is 0.20m, the spacing between the auxiliary eye 8 and its adjacent groove eye 9 is 0.25m, the four groove eyes 9 are distributed in a square shape, and the spacing between adjacent groove eyes 9 is 0.3m.

[0031] Example 3

[0032] See also Figure 3 The diameter of the entire pipe column 1 is 1.8m, the number of peripheral eyes 7 is 8, the spacing between adjacent ones is 0.45m, the number of auxiliary eyes 8 is 6, the number of groove eyes 9 is 4, the spacing between the peripheral eye 7 and its adjacent auxiliary eye 8 is 0.25m, the spacing between the peripheral eye 7 and the outer edge of the pipe column 1 is 0.25m, the spacing between the auxiliary eye 8 and its adjacent groove eye 9 is 0.20m, the four groove eyes 9 are distributed in a cross shape, and the spacing between each groove eye 9 and the center of the pipe column 1 is 0.175m.

[0033] Example 4

[0034] See also Figure 3 The diameter of the entire pipe column 1 is 1.5m, the number of peripheral eyes 7 is 8, the spacing between adjacent ones is 0.4m, the number of auxiliary eyes 8 is 4, the number of groove eyes 9 is 3, the spacing between the peripheral eye 7 and the adjacent groove eyes 9 is 0.40m, the spacing between the peripheral eye 7 and the outer edge of the pipe column 1 is 0.2m, the three groove eyes 9 are distributed in a triangle, and the spacing between each groove eye 9 is 0.3m.

[0035] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A pile rock fracturing charge column, characterized in that: The invention comprises a column tube (1), wherein the upper opening and the lower opening of the column tube (1) are respectively provided with an upper plug (3) and a lower plug (2); the lower half of the interior of the column tube (1) is filled with an expansion tube (4), the expansion tube (4) is filled with a carbon dioxide agent, the upper half of the interior of the column tube (1) is filled with a filling material (4), the carbon dioxide agent is connected with a detonating wire (6), the detonating wire (6) passes through the filling material (4) and the upper plug (3) in sequence, and the upper plug (3) is provided with three circles of annularly distributed blast holes, wherein the outer circle blast holes are peripheral holes (7), the middle circle blast holes are auxiliary holes (8), and the inner circle blast holes are groove holes (9).

2. The pile rock fracturing charge according to claim 1, characterized in that: The filling material (4) includes sand, clay and water.

3. The hole pile rock fracturing charge column according to claim 2 is characterized in that: The mixing ratio of sand, clay and water is 4:5:

1.

4. The hole pile rock fracturing charge column according to claim 1, characterized in that: The number of the groove holes (9) in a circular array is 3-6, the number of the auxiliary holes (8) in a circular array is 3-5, and the number of the peripheral holes (7) in a circular array is 7-10.

5. The pile rock fracturing charge according to any one of claims 1 or 4, characterized in that: The cutout eye (9) is in an outward-facing O-shaped shape.

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