High-precision blast hole angle measuring device

Abstract

The utility model discloses a high-precision blast hole angle measuring device. The high-precision blast hole angle measuring device is characterized by comprising an angle sensor (2) arranged in a carbon fiber tube (1), the angle sensor (2) is led out from the lower end of the carbon fiber tube (1) through a data transmission line (4) and is connected with a digital touch display screen (7) positioned outside the blast hole; the lower ends of the carbon fiber tubes (1) are connected with combined rods (5), and a plurality of combined rods (5) are connected one by one in a simple sleeve mode. By the adoption of the device, the drilling quality can be fed back in time, blasting parameters can be adjusted in time, blasting blocks can be reduced by 5%, and the open blasting root bottom can be reduced; the method can be widely applied to engineering blasting fields of surface mines, underground mines and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of mine blasting exploitation, and particularly relates to a blast hole angle measuring device, which is particularly suitable for checking whether the angle of an upward fan-shaped blast hole in an underground mine is deviated and can be widely applied to upward fan-shaped deep hole blasting or open deep hole blasting in an underground mine. BACKGROUND

[0002] In the process of underground mine blasting exploitation, drilling construction is a key link, which is directly related to the blasting cost and effect and influences the efficiency of subsequent loading, especially for the underground mine using upward fan-shaped deep hole blasting. Most large mines at home and abroad use upward fan-shaped medium-deep hole blasting, the blast hole depth is 20-35 m, and each blast hole forms a fan-shaped blasting zone according to the designed angle. The blast hole angle is deviated due to the influences of the mechanical bending of a drill rod, the flatness of a top and bottom plate, and rock layer changes. When the blast hole is greatly deviated, the large blocks generated after blasting will obviously increase if the blasting parameters cannot be timely adjusted, which not only influences the loading efficiency, but also adversely influences subsequent crushing and ore grinding, resulting in the increase of the overall production cost.

[0003] At present, the domestic common gyroscopes, wave velocity methods, magnetic acceleration type inclinometers, and rod type anti-magnetic blast hole inclinometers are used to carry out blast hole angle measurement, but the upward fan-shaped deep hole angle measurement has the following problems:

[0004] (1) The existing blast hole measuring equipment is mostly used for open pit mines, and the measuring equipment has low measurement accuracy due to the magnetic interference of the ore body.

[0005] (2) The existing measuring equipment has high cost and is easy to be damaged, and the blast hole measurement in the underground mine often causes the equipment to be stuck in the hole due to the collapse of the blast hole and the broken stones in the hole, so the equipment cannot be recovered, and therefore cannot be widely applied in the underground mine. SUMMARY

[0006] The utility model provides a kind of high-precision blast hole angle measuring device for the above problems existing in prior art, which is simple to operate, accurate, low cost and easy to maintain, can timely feedback blast hole angle deviation, adjust blasting parameters, improve blasting effect, and improve the safety and efficiency of mine blasting exploitation.

[0007] To achieve the above purposes of the utility model, the high-precision blast hole angle measuring device adopts the following technical solutions:

[0008] The utility model discloses a high-precision blast hole angle measuring device for checking upward fan-shaped blast hole angle in underground mine. It includes the angle sensor installed in the carbon fiber pipe, the angle sensor is led out from the lower end of the carbon fiber pipe through the data transmission line and is connected with the digital touch display screen located outside the blast hole, thereby transmitting the blast hole angle measurement to the digital touch display screen in real time, a plurality of combination rods are connected one by one in simple sleeve pipe mode to meet the blast hole depth requirement, and the carbon fiber pipe is conveniently sent to the bottom of the blast hole. The digital touch display screen supplies power for the angle sensor and displays, records and stores the angle of the blast hole position where the angle sensor is located in real time.

[0009] Preferably, the angle sensor is fixed in the middle of the interior of the carbon fiber pipe through the fixing screw.

[0010] Preferably, the upper end of the carbon fiber pipe is in the form of a plug.

[0011] Preferably, the carbon fiber pipe is in the form of a circular tube, the length is 900-1100mm, the outer diameter of the carbon fiber pipe is 9-13mm smaller than the diameter of the blast hole, so as to ensure the blast hole measurement accuracy and facilitate the movement of the carbon fiber pipe in the hole. When the diameter of the blast hole is 76mm, the length of the carbon fiber pipe is 1m, the outer diameter is 65mm, and the wall thickness is 2mm, and the distance between the carbon fiber pipe and the hole wall is 11mm.

[0012] Preferably, the combination rod is 2m long, the middle part is marked with red electrician's tape for facilitating the subsequent recording of the blast hole depth, and a plurality of combination rods are in simple sleeve pipe mode.

[0013] In actual use, all components are connected, the carbon fiber pipe is sent along the hole opening through the combination rod, is paused every 1m, and the angle reading on the display screen is recorded after the angle displayed on the digital touch display screen is stable.

[0014] The high-precision blast hole angle measuring device has the following beneficial effects:

[0015] (1) The blast hole angle measuring device is not only suitable for the upward fan-shaped deep hole angle measurement in underground mine, but also can be used for the open deep hole blasting blast hole angle measurement, can timely feedback the drilling quality, adjust the blasting parameters, can reduce the blasting boulder rate by more than 5%, and can obviously reduce the open blasting root.

[0016] (2) The blast hole angle measuring device is made of carbon fiber pipe and angle sensor, and the weight is very light, so that the maintenance and operation are easy.

[0017] (3) The distance between the carbon fiber pipe and the hole wall is only 5.5mm, according to the calculation of the trigonometric function, the maximum deviation angle of the inclinometer in the hole is 0.53°, and the error is very small.

[0018] (4) During measurement, readings are taken every 1 meter, which reduces the overall error and makes the overall borehole angle more accurate.

[0019] (5) The borehole angle measuring device can measure the angle values ​​in the X and Y directions respectively. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a high-precision borehole angle measuring device according to the present invention.

[0021] Reference numerals: 1-Carbon fiber tube; 2-Angle sensor; 3-Fixing screw; 4-Data connection cable; 5-Combination rod; 6-Red electrical tape; 7-Digital touch screen. Detailed Implementation

[0022] To better describe this utility model, the following detailed description of a high-precision borehole angle measuring device is provided in conjunction with the accompanying drawings and embodiments.

[0023] Take, for example, the angle of upward-facing fan-shaped blast holes used for inspection in underground mines. (From...) Figure 1 As shown in the schematic diagram of the high-precision borehole angle measuring device of this utility model, in this embodiment, the high-precision borehole angle measuring device includes a carbon fiber tube 1, an angle sensor 2, and a digital touch screen 7. The upper end of the carbon fiber tube 1 is sealed. The angle sensor 2 is fixed to the middle of the inside of the carbon fiber tube 1 by fixing screws 3. The angle sensor 2 is led out from the lower end of the carbon fiber tube 1 via a data transmission line 4 and connected to the digital touch screen 7 located outside the borehole. A combination rod 5 is connected to the lower end of the carbon fiber tube 1. Multiple combination rods 5 are connected one after another using a simple sleeve method. In use, the data transmission line 4 is first inserted into the interface of the angle sensor 2, and then the angle sensor 2 is fixed to the middle of the inside of the carbon fiber tube 1 with two fixing screws 3. The data transmission line 4 is connected downwards along the combination rod 5 through the other end of the carbon fiber tube 1. The angle measuring part is connected by the combination rod 5. Red electrical tape 6 is tied to the midpoint of each combination rod 5 to facilitate subsequent recording of the borehole depth. The data transmission line 4 is connected to the digital touch screen 7 located outside the borehole along the combination rod 5.

[0024] The carbon fiber tube 1 has an outer diameter of 65mm and a wall thickness of 2mm. Its key feature is that the length of the carbon fiber tube 1 is 1m. The difference between the measured borehole diameter and the outer diameter of the carbon fiber tube 1 is 11mm. As the borehole diameter increases, the diameter of the carbon fiber tube also increases accordingly. This allows the maximum measurement error in the borehole to be controlled within ±0.53°. The upper end of the carbon fiber tube 1 is sealed, and the lower end is connected to the combination rod 5. The combination rod 5 is made of PVC, with an outer diameter of 20mm, a wall thickness of 1mm, and a length of 2m, with red electrical tape 6 tied in the middle. Multiple combination rods 5 are connected using a simple sleeve.

[0025] The utility model discloses a high-precision blasthole angle measuring device's principle: angle sensor 2 can realize the detection of its space X, Y direction angle, and fix in carbon fiber pipe 1 inside middle, and the operator uses combination rod 5 to send carbon fiber pipe 1 to blasthole, and when measuring, through the red electrician adhesive tape 6 mark on combination rod 5 record to determine blasthole depth, and record angle data shown by digital touch display screen 7 once every 1m. After every blasthole test, after data record collation, adopt CAD to input every measuring point's data in design blasthole coordinate system, draw actual blasthole track, through the comparison actual blasthole track and design blasthole position, can observe the angle deviation between actual blasthole and design blasthole.

Claims

1. A high-precision borehole angle measurement device, characterized by: It includes the angle sensor (2) installed in the carbon fiber pipe (1); the angle sensor (2) is led out from the lower end of the carbon fiber pipe (1) through the data transmission line (4) and is connected with the digital touch display screen (7) located outside the blast hole; the combined rod (5) is connected at the lower end of the carbon fiber pipe (1), and a plurality of combined rods (5) are connected one by one in a simple sleeve manner.

2. A high-precision borehole angle measurement device as claimed in claim 1, characterized in that: The angle sensor (2) is fixed in the middle of the inside of the carbon fiber pipe (1) through the fixing screw (3).

3. A high-precision borehole angle measurement device as claimed in claim 1, characterized in that: The upper end of the carbon fiber pipe (1) is in a plugging shape.

4. A high precision borehole angle measurement device as claimed in claim 1, characterized in that: The carbon fiber pipe (1) is in a circular tube structure, the length is 900-1100mm, and the outer diameter of the carbon fiber pipe (1) is 9-13mm smaller than the diameter of the blast hole.

5. A high precision borehole angle measurement device as claimed in claim 1, characterized in that: The combined rod (5) is 2m long, the middle part is marked with red electrician tape (6), and a plurality of combined rods (5) are used in a simple sleeve manner.

6. A high precision borehole angle measurement device as claimed in claim 2, characterized in that: The carbon fiber pipe (1) is in a circular tube structure, the upper end of the carbon fiber pipe (1) is in a plugging shape, the length of the carbon fiber pipe (1) is 900-1100mm, and the outer diameter of the carbon fiber pipe (1) is 9-13mm smaller than the diameter of the blast hole; the combined rod (5) is 2m long, the middle part is marked with red electrician tape (6), and a plurality of combined rods (5) are used in a simple sleeve manner.

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