1. Horizontal plane cutting method

The main purpose of the diamond beaded wire saw for horizontal cutting on the ore body is to separate and cut the separating body from the horizontal link with the ore body on the vertical plane. This sequence is irreversible, because when the horizontal plane is cut, the separation body is connected to the vertical plane of the ore body to prevent the separation body from falling. The experience of falling and pressing the diamond beaded rope at any time will not only cause the crushed diamond beaded rope to be scrapped, but also cause the diamond beaded rope to break and fly out in severe cases, causing more serious accidents. It is also necessary to insert steel wedges as much as possible in the already cut saw seam at any time, so as to keep the separation body supported as much as possible on the horizontal plane. This auxiliary method is more important for the separation body with a cracked forehead.

Before horizontal cutting, the position of the vertical hole and the horizontal hole should be selected according to the determined size of the separation body. Drilling sequence first

Drill deep holes, preferably shallow holes. This is mainly a consideration of the cost and ease of re-drilling if the holes do not meet. if

It is necessary to drill a vertical hole first, and the diameter of the hole is related to the height of the step and the depth of the vertical cutting surface, usually less than 10m deep.

The diameter of the straight hole is generally 90-100mm. For vertical drilling with a depth of more than 10m, the best hole diameter is 120-150mm.

The large vertical bore easily intersects with the horizontal bore. Based on the vertical hole, the vertical and horizontal horizontal holes are drilled into orthogonal relationship and perpendicular to each other, and the vertical holes meet and pass through, so that the diamond beaded rope can be passed through.

The size of the cutting separation body is determined by the actual situation of the finished block and ore body, and the longitudinal depth of the horizontal plane is generally in

Between 3~12m, the transverse cutting depth is between 10~15m. Large hole drilling diameter drilling equipment can be used with a hole diameter of

90~150mm, usually the deeper the drill hole, the larger the drill diameter should be. Horizontal boreholes within a depth of 4m also use horizontal standards

Rod rock drill or hand-held rock drill is completed, the hole diameter is generally 38~40mm. 4~8m depth of horizontal drilling, optional straight

Drill holes with a diameter of 50mm, so as to facilitate the intersection with vertical holes.

The sawing of the horizontal plane is also divided into two ways: horizontal (Figure 1-2) and vertical (Figure I-3). Longitudinal cuts refer to diamonds

The bead saw guide is parallel to the longitudinal horizontal drilling, and the feed of the diamond bead saw is in the direction of the longitudinal drilling. horizontal cutting

The given direction is along the direction of the horizontal horizontal drilling.

The cutting of the horizontal plane adopts the "up-cut method", that is, the diamond bead saw is located on the bottom surface of the step to be sawed, and the

The separation body on the mining step above it performs horizontal bottom cutting, and this horizontal cutting is called bottom cutting. another one

This kind of cutting of the suspended horizontal plane has been used in the mining of vein gold.