CN107838139A - A kind of colliery Roofbolt drill rod conduction method - Google Patents

Abstract

The present invention relates to a kind of Roofbolt drill rod conduction method, and can effectively turn on causes drilling rod to block this problem because drilling cuttings condenses.The first step, conducting device assembles, fix bar is installed on portable hand electric drill first, then extension bar is connected in fix bar, then conducting drill bit is connected with extension bar, second step, Roofbolt drill rod turns on, and the conduction rod for connecting conducting drill bit is inserted into drilling rod centre bore, until being contacted with the landwaste that inside blocks, start portable hand electric drill, turned on, the 3rd step, after drilling rod conducting, conducting device is taken out, drilling rod is gently tapped, internal residual landwaste is excluded, is internally passed through clear water, cleared up, landwaste is thoroughly excluded.The inventive method is simple, reasonable, efficiently solves the problem that anchor pole is not easy to turn on, significantly extends the service life of drilling rod, reduces the economic loss in colliery.

Description

A method for conduction of rock bolt and drill pipe in coal mine

technical field

The invention relates to the field of coal mine support, in particular to a conduction method for bolt and drill rods.

Background technique

Since the 1990s, bolt support technology has been widely used in coal mine roadway support due to its remarkable technical and economic advantages, and it is a revolution in the field of coal mine roadway support. Drilling the anchor hole is a necessary step for bolt support, and the drill rod is a necessary tool for drilling the anchor hole. In recent years, with the increase of roadway support strength, the bolt support density and length have gradually increased, and the construction strength of anchor holes has also increased.

When drilling anchor holes, water is usually passed into the center hole of the drill pipe to reduce the temperature of the drill bit, improve the life of the drill bit, and allow the drilling slag to be removed in time to increase the drilling speed. However, due to man-made and other factors, after the construction of the anchor hole is completed, water cannot be passed into the drill pipe in time to remove the residual drilling slag inside the drill pipe. The space is narrow, and the targeted tools have not yet been conducted. The usual practice is to use tools to slam the drill pipe, but the effect is not obvious, and it is easy to damage the drill pipe, resulting in huge economic losses. Therefore, it is imperative to develop a fast, effective and easy-to-operate method for leading through the drill pipe.

Contents of the invention

In view of the above situation, in order to solve the defects of the prior art, the object of the present invention is to provide a method for connecting drill rods of anchor rods, which can effectively solve the technical problem of internal blockage of drill rods and difficult conduction of drill rods.

The technical solution solved by the present invention is that the first step is to assemble the conduction device. First, the fixed rod is installed on the portable electric hand drill, and then the extension rod is connected to the fixed rod, and then the conduction drill bit is connected to the extension rod. According to the actual length, you can choose to increase or decrease the extension rod;

The second step is to conduct the anchor rod drill pipe, insert the conduction rod connected to the conduction drill bit into the center hole of the drill pipe until it contacts with the cuttings blocked inside, and start the portable electric drill to conduct conduction;

In the third step, after the drill pipe is connected, take out the conduction device, tap the drill pipe lightly, remove the residual cuttings inside, pour clean water into the inside, clean up, and completely remove the cuttings.

The method of the invention is simple and reasonable, effectively solves the problem that the anchor rod is not easy to conduct, remarkably prolongs the service life of the drill rod, and reduces the economic loss of the coal mine.

Description of drawings

Fig. 1 is the structural front view of the present invention.

Fig. 2 is a structural diagram of the conducting rod.

Fig. 3 is a structure diagram of the conduction drill bit.

Figure 4 is a schematic diagram of the work of the present invention.

Detailed ways

The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

Given by Fig. 1-4, when the present invention is concretely implemented, first assemble the conduction device, then use the conduction device to conduct conduction to the drill pipe, and then proceed according to the following steps:

The first step is to assemble the conduction device. First, install the fixed rod 2 on the portable electric drill 10, then connect the extension rod 5 to the fixed rod 2, and then connect the conduction drill bit 6 to the extension rod 5. Length, you can choose to increase or decrease the extension rod 5;

In the second step, the anchor drill rod is conducted, and the conduction device is inserted into the central hole 13 of the drill pipe 11 until it contacts with the cuttings 12 blocked inside, and the portable electric hand drill 10 is started to conduct conduction;

In the third step, after the drill pipe is conducted, the conduction device is taken out, and the drill pipe 11 is lightly tapped to remove the residual cuttings 12 inside, and clear water is poured into the inside for cleaning, and the cuttings 12 are completely removed.

The drill pipe conduction device includes a fixed rod 2, an extension rod 5, and a conduction drill bit 6. The fixed rod 2 is connected with the portable electric drill 10 through a fixed joint 1, and the outer surfaces of the fixed rod 2 and the extension rod 5 are evenly distributed. 3 chip guide grooves 3, one end of the fixed rod 2 and both ends of the extension rod 5 are provided with internal thread holes 7, the fixed rod 2 and the extension rod 5 are connected with the external threads on the surface of the joint 4 through the internal thread holes 7, and conduction The drill bit 6 is connected with the internally threaded hole 7 of the extension bar 5 through its own externally threaded pipe 9 , and four picks 8 are evenly distributed on the top of the drill bit 6 .

The fixed rod 2 and the extension rod 5 are made of high-strength metal material, and are cylindrical solid rods with a length of 200mm and a diameter of 4mm.

The cross-sectional shape of the chip guides 3 is rectangular, 1.5 mm wide and 0.5 mm deep, and the three chip guides are evenly distributed on the surface of the fixed rod 2 and the extension rod 5 at 120°.

The depth of the internally threaded hole 7 is 5mm, the internal diameter is 2.4mm, and the thread of the joint 4 matches the thread of the internally threaded hole 7 .

The material of the pick 8 of the conduction drill bit 6 is high-strength alloy steel, and the diameter of the circumscribed circle is 4mm.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and replacements can also be made, these improvements and replacements It should also be regarded as the protection scope of the present invention.

The invention has the advantages of simple structure, convenient operation, portability, scientific and reasonable construction method, can effectively break and export the condensed drill cuttings in the borehole, greatly improves the work efficiency, saves the cost of coal mines, and has good economic and social benefits. benefit.

Claims (5)

1. The present invention relates to a method for conduction of anchor rod and drill pipe, which is characterized in that: first assemble the conduction device, then use the conduction device to conduct conduction to the drill pipe, and then proceed according to the following steps: The first step is to assemble the conduction device. First, install the fixed rod (2) on the portable electric drill (10), then connect the extension rod (5) to the fixed rod (2), and then connect the conduction drill bit (6 ) is connected with the extension rod (5), according to the actual length, you can choose to increase or decrease the extension rod (5); In the second step, the anchor rod drill rod is conducted, and the conduction device is inserted into the center hole (13) of the drill pipe (11) until it contacts with the cuttings (12) blocked inside, and the portable electric hand drill (10) is started to conduct the conduction. Pass; In the third step, after the drill pipe is connected, the conduction device is taken out, and the drill pipe (11) is lightly tapped to remove the residual cuttings (12) inside, and clear water is poured into the inside for cleaning, and the cuttings (12) are removed. completely ruled out; The drill pipe conduction device includes a fixed rod (2), an extension rod (5), and a conduction drill bit (6). The fixed rod (2) is connected to the portable electric drill (10) through a fixed joint (1), Three chip guide grooves (3) are evenly distributed on the outer surface of the fixed rod (2) and the extended rod (5), and internal threaded holes (7) are opened at one end of the fixed rod (2) and both ends of the extended rod (5). The fixed rod (2) and the extension rod (5) 5 are connected with the external thread on the surface of the joint (4) through the internal thread hole (7), and the conduction drill bit (6) is connected with the extension rod through its own external thread pipe (9) The internally threaded holes (7) of the rods (5) are connected to each other, and (4) picks (8) are evenly distributed on the top of the drill bit (6). 2. The conduction method of anchor and drill pipe according to claim 1, characterized in that, the fixed rod (2) and the extension rod (5) are made of high-strength metal materials, both of which are cylindrical The solid rods are all 200mm in length and 4mm in diameter. 3. The conduction method for rock bolt and drill pipe according to claim 1, characterized in that, the section shape of the chip guide groove (3) is rectangular, 1.5mm wide, 0.5mm deep, and 3 chip guide grooves 120° are evenly distributed on the surface of the fixed rod (2) and the extension rod (5). 4. The conduction method of anchor and drill pipe according to claim 1, characterized in that, the depth of the internally threaded hole (7) is 5mm, the inner diameter is 2.4mm, and the threads of the joint (4) and the internally threaded hole (7) Threads match. 5. A method for conducting a rock bolt and drill pipe according to claim 1, characterized in that the material of the pick (8) of the conducting drill bit (6) is high-strength alloy steel, and the diameter of the circumscribed circle is 4mm.