Downhole small advance orientation exploration water discharging device and method
A small-scale water detection and discharge technology, which is applied in the directions of safety devices, drainage, earthwork drilling and mining, etc., can solve the problems of occupying the excavation time, affecting the popularization and application of the underground advanced drilling water detection and discharge technology, and affecting the speed of the excavation working face, etc., to achieve drainage High efficiency, high controllability of drilling trajectory, and low hole density
Active Publication Date: 2015-09-02
WUHAN CONOURISH COALMINE SAFETY TECH
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Problems solved by technology
A large amount of advanced drilling engineering takes up a lot of excavation time in the roadway, which seriously affects the excavation speed of the excavation face. There is a sharp contradiction and conflict between the advance exploration and discharge and the excavation speed. This contradiction seriously affects the underground advance drilling water exploration and discharge technology. Promoted application of
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[0017] Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
[0018] like Figures 2 to 4 The shown small-scale advance directional water exploration and release device in the well includes an on-site drilling trajectory control host 7, a drilling rig 2.1, a drill pipe 2.2 arranged on the drilling rig 2.1, and a detection drill pipe 8, one end of which is threadedly connected to the drill pipe 2.2, through the screw motor 9 The drill bit 2.3 installed on the other end of the detection drill pipe 8 (one end of the detection drill pipe 8 is threadedly connected with the drill pipe head of the drilling rig 2.1, and the other end is connected with the front end of the screw motor 9 through threads, and the rear end of the screw motor 9 is connected with the drill bit 2.3. Also through screw connection), the mud pump 2.4 matched with the drill bit 2.3, wherein the drilling rig 2.1 is arranged in the hole in the side wa...
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The invention discloses a downhole small advance orientation exploration water discharging device and method. The downhole small advance orientation exploration water discharging device performs advance orientation exploration water discharging on surrounding rock in front of a tunnel through an on-site drilling trajectory control main unit, a drilling machine, a drill stem, an exploration drill stem, a screw motor, a drill bit and a mud pump. The on-site drilling trajectory control main unit drills according to preset trajectory of orientation advance exploration water discharging drilling, receives drilling three-dimensional posture data automatically tested by the exploration drill stem, calculates the actual drilling trajectory at the same time, compares the actual drilling trajectory with design trajectory data, and calculates the face angle for regulating the bending face of the screw motor according to the actual drilling difference to allow the drilling trajectory to be corrected towards the design drilling trajectory and finally allow the actual drilling trajectory reach a design target. The downhole small advance orientation exploration water discharging device has the advantages that orientation drilling exploration and water discharging can be performed on an excavation tunnel or a tunnel head and working face, parts with rich water in the excavation front of the tunnel and in certain distance range around the tunnel are avoided, and tunnel excavation safety is guaranteed.
Description
technical field [0001] The invention relates to the technical field of underground water exploration and release in advance, in particular to a small advanced directional water exploration and release device and method in a well. technical background [0002] Advance water exploration and release refers to the use of drilling to directly conduct water exploration and release to the roadway or tunnel driving direction and working face at the head of the excavation roadway to detect whether there is a rich water body, harmful geological structure or water guiding channel in front of it, and if there is water, water is released through drilling , to provide protection for the safe excavation of roadways or tunnels. [0003] Drilling in advance to detect and release water is one of the most important and effective methods for water control in wells that is still widely used. However, since the current underground drilling advance drilling is all straight holes 10, according to ...
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IPC IPC(8): E21F16/00
Inventor 武强刘鎏曾一凡陶凤娟刘春生
Owner WUHAN CONOURISH COALMINE SAFETY TECH