Inclined pre-perforation device and pre-perforation processing method in the drilling hole of the cube original rock sample
A technology in cubes and boreholes, which is applied in the field of inclined pre-perforation devices in drill holes of cube raw rock samples, can solve problems such as difficulties in making raw rock samples, avoid impact rock breaking, improve precise control, and reduce damage effect
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Embodiment 1
[0046] Example 1, see figure 1 , figure 2 , image 3 , Figure 4 , a kind of inclined pre-perforation device in the drilling hole of a cube original rock sample, comprising a base platform 1, an air drill, a sample holder 8, an air pressure control device 7 and a position adjustment device; the air drill and the sample holder The devices 8 are all connected to the base platform 1 through a position adjustment device; the position adjustment device is composed of a lifting device 91, a longitudinal displacement device 92 and a sample displacement device 93: the vertical displacement device 92 can be lifted and lowered On the device 91, the vertical displacement device 92 forms a structure with an adjustable pitch angle through the first angle adjuster; the sample holder 8 is arranged on the sample displacement device 93, and the sample displacement device 93 is horizontal. It is arranged laterally on the base platform 1; the air drill is also connected to a pressure gas sou...
Embodiment 2
[0052] Example 2, combined with figure 1 , figure 2 , image 3 , Figure 4 , a kind of inclined pre-perforation processing method in the borehole of a cubic protorock sample, implemented based on the device of embodiment 1, comprising the following steps:
[0053] The first step is to determine the perforation diameter and inclination angle of the oblique perforation in the through hole in the middle of the cube rough sample, and install the angle transmission device 3 corresponding to the inclination angle on the micro pneumatic motor 2 of the air drill, and take the same diameter The drill bit in the diamond tool 6, and the drill bit is fixed on the drill rod 5 by clamping;
[0054] In the second step, fix the prefabricated 300mm × 300mm × 300mm cubic protorock sample 11 with a through hole formed in the middle part on the sample holder 8 according to the vertical mode of the central through hole axis of the sample, and The position of the sample is roughly adjusted by ...
Embodiment 3
[0064] Embodiment 3, a kind of oblique pre-perforation processing method in the drilling hole of the cube proto-rock sample, the difference between this method and embodiment 2 is that the pre-perforation section trimming is carried out according to the following steps: S21 is the cubic proto-rock in the seventh step After the pre-perforation at different heights in any of the same phases in the upper middle of the sample 11 is completed, the drill bit is lifted above the cubic original rock sample, and the drill bit is replaced with a grinding head; S22 repeats the fifth and sixth steps The first step is to modify the shape of the pre-perforation sections at different heights in the same phase in sequence; S23 retreats the air drill and lifts it above the cubic original rock sample 11 to prepare for the next group of pre-perforation drillers. pieces.
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