JPS62125191A - Method for measuring drilling direction - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a drilling direction measuring method.

<Conventional Method> Conventionally, when drilling with a multi-drill, the multi-drill is connected to a hollow auger shaft via a rod sub.

When drilling a hole, it is necessary to know exactly the direction in which the hole is being drilled.

For this, a target installed inside the multi-drill was installed outside the free end of the auger shaft? l
1lI! The drilling direction is measured by mechanically collimating the hole.

At this time, the hollow part of the auger shaft is used as a supply path for supplying compressed air to the multi-drill and as an observation path for collimating the target.

Problems to be Solved by the Present Invention> Conventionally, in order to sight the target and survey the drilling direction, the hollow part of the auger shaft serves both as a supply path and an observation path. There are problems such as:

When using the hollow part as a supply path for compressed air (during impact), the inside of the supply path is pressurized and the hollow auger shaft is closed with a lid, making it impossible to aim at the target. , it is not possible to conduct a survey.

When starting a survey, the closed lid is opened, so the pressure inside the hollow part of the auger shaft is reduced from pressurized to normal.

Because of this, fog forms on the observation path, making it impossible to sight the target at the tip and making it impossible to survey until the fog disappears.

Kuha〉Water and oil entering the observation path adhere to the target, making sighting difficult and making accurate measurements impossible.

<Purpose> An object of the present invention is to provide a drilling direction surveying method that solves the above problems.

<Example> Hereinafter, an example of the drilling direction measuring method of the present invention will be described with reference to the drawings.

First, the apparatus used to implement the present invention will be explained.

In the apparatus for implementing the present invention, a supply path for supplying compressed air to the multi-drill 1 and an observation path B for sighting the target 11 in the multi-drill 1 are formed separately. ing.

That is, in order to carry out the present invention, a multi-pipe auger shaft 2 in which the observation path B and the supply path A are formed separately is required.
The multi-pipe auger shaft 2 is connected to the multi-drill 1 via the multi-pipe rod sub 3 for use.

Multi-pipe auger shaft The multi-pipe auger shaft 2 has a central pipe body 21 located at the center and a periphery of the central pipe body 21, as shown in FIG. 2 as an example of a double pipe structure. It is composed of an outer tubular body 22 located at.

Then, the pipe path formed by the central pipe body 21 is connected to the observation path B.
If the space between the central tube body 21 and the outer tube body 22 is defined as the supply path A, then the observation path B and the supply path A are not shared but are formed separately. Supply path A will be located around B.

Exit> Multi-pipe rod sub The multi-pipe rod sub 3 connects the multi-pipe auger shaft 2 to the multi-drill 1.

At this time, since observation path B and supply path A are formed separately in the multi-pipe auger shaft 2, the supply path A portion is connected to the compressed air supply portion of the multi-drill 1, and the observation path B is connected to the compressed air supply portion of the multi-drill 1.
The part connected to the part where the target 11 is installed.

Next, a drilling direction measuring method will be explained.

First, the surveying machine 4 is connected to the outside of the free end of the multi-pipe auger shaft 2 connected to the multi-drill 1, and the observation path B
Install it in a position where it can be sighted.

Then, using the installed surveying machine 4, multi-drill 1
By collimating the target 11 installed inside the observation path B, which is formed separately from the supply path A, the survey in the drilling direction is performed.

<Effects> As explained above, the drilling direction surveying method of the present invention forms the supply route and the observation route separately, and performs the survey by using the observation route exclusively for collimating the target. , the following effects can be expected.

(B) Even if the inside of the supply channel is pressurized, the target can be sighted using the observation channel, so constant surveying can be performed.

The pressure inside the observation path is always constant and there is no fog (and the target can be sighted at any time, so surveying can be carried out immediately.

Kuha〉A supply route will be located around the observation route, so there will be no water or oil! There is no direct entry into the side road.

Therefore, since water and oil are less likely to adhere to the target, the target can be easily sighted at any time, and accurate surveying can be performed.

[Brief explanation of drawings]

Claims (1)

[Claims] A surveying machine is installed outside the free end side of an auger shaft connected to a multi-drill, and this surveying machine is used to collimate a target installed in the multi-drill and drill it. A method for surveying the hole direction, which is characterized by forming an observation path in the auger shaft separate from the supply path that supplies compressed air to the multidrill, and using this observation path to sight the target. Hole direction survey method