Angle adjustment device and hydraulic control method for realizing simultaneous construction of equidistant double boreholes

Abstract

An angle adjustment device and a hydraulic control method thereof for realizing simultaneous construction of equal-spaced double drilling holes, the angle adjustment device includes 2 consoles, 2 rear outriggers, 2 drill frame components, crawlers, a welded car body, 2 A drill arm and two front outriggers; the welded car body is connected to the crawler belt, the two drill frame components are connected above the two sides of the welded car body, and the two front outriggers and two rear outriggers They are respectively connected under the two sides of the welding car body, and the two drill arms and the two operating platforms are respectively arranged on the outside of the drill frame assembly; thus, the present invention has high construction efficiency, narrow width, strong applicability, and is easy to drill Accurate positioning, convenient movement, the drill arm can realize all-round angle adjustment, and can construct two equally spaced drilling holes at the same time. The drilling spacing is a positive divisor of 2400mm or 2500mm. Applicable scope and working ability of the device.

Description

technical field [0001] The invention relates to the technical field of coal mine underground roadway engineering, in particular to an angle adjustment device and a hydraulic control method for realizing simultaneous construction of equidistant double boreholes. Background technique [0002] In recent years, with the increase of coal mine mining intensity and depth, the difficulty of roadway surrounding rock control has increased day by day, and coal mine safety accidents have occurred frequently, among which roadway roof accidents accounted for 91%, and working face trough roof accidents accounted for 90% of the total roadway accidents. At present, bolt support, as an effective roadway support method, has become the main support method for coal mine roadways. It is an indispensable technology for coal mines to achieve high-yield and high-efficiency production. In addition, the construction of directional blast holes along the roof can improve the stress environment of the su...

AI Technical Summary

Problems solved by technology

[0003] At present, domestic coal mine underground bolt (cable) drilling construction equipment mainly includes pneumatic drilling rigs and hydraulic drilling rigs. Among them, although pneumatic drilling rigs are convenient and flexible to move, they have small capabilities, limited construction scope, low degree of automation, and safety. Poor performance, restricted by downhole wind pressure and other factors, the construction range is limited and the drilling depth does not exceed 3m

However, hydraulic drilling rigs are generally used as a simple modification of conventional tunnel drilling rigs, with a low degree of specialization. Although the construction efficiency is high, there are problems such as inconvenient movement, poor adaptability to roadway conditions, and limited angle adjustment range of the whole machine.

[0004] In addition, coal mine roadways generally have complex geological conditions, poor flatness of the floor, and difficulty in adjusting the angle of construction equipment. In order to ensure that all drilling positions are on a preset straight line and prevent cross holes, each drilling It takes a lot of time to adjust the azimuth and inclination, and only one borehole is constructed at a time, so the efficiency is low, and it cannot meet the requirements of efficient construction of a large number of boreholes in coal mines

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