SU891926A1 - Method of driving a cut-through when mining thick gently sloping mineral beds - Google Patents

Description

(54) METHOD FOR CARRYING OUT OF THE CUTTING FURNACE WHEN DEVELOPING POWERFUL PROPOSITIONAL LAYERS

MINERAL RESOURCES

I

The invention relates to the mining industry and can be used in the development of powerful flat seams of minerals, mainly coal.

There is a known method of conducting a split furnace when developing thick, flat seams of minerals by excavating a soil-accessing face, including holding furnaces on the roof and on the soil of the formation with offset relative to the corner of the friend and collapsing the coal over the furnace near the soil of the formation, followed by combining the furnaces 1.

There is also known a method for conducting a cutting furnace when developing thick, flat seams of minerals by excavating a face-to-face slaughter, which includes holding the kiln at full capacity of the bed with a tunnel-going access hole with anchoring the roof of the bed 2.

However, both of these methods are characterized by multi-operative holding of the furnace.

The purpose of the invention is to intensify the preparatory work due to the formation of excavation soil; 1 packed in the process of the furnace.

The goal is achieved by the fact that in the upper ledge of the tunneling inlet, the furnace is conducted with a one-sided cutter of the reservoir from the side of the array to be tested, while the width of the near-bottom is taken equal to 5 ahead of the steps of the excavated access floor.

The side wall of the undercut is formed normally to the bedding, and the side wall of the furnace, which is opposite to the excavated bottom-facing slaughter, is drawn in 10 with a grid and anchored.

FIG. 1 shows a diagram of the furnace, in plan; in fig. 2 is a diagram along the strike of the formation, in section.

The method is as follows.

When developing a powerful flat reservoir of mineral 1, a split furnace is conducted by soil-accessing headhole 2 for the entire thickness of the formation, while in the upper ledge 3 of the heading accessory furnace, the furnace is made with one-sided incision 4 of the layer from the side of the array to be developed. The width of the pavement is taken equal to the advance of the ledges of the excavated ground-access slab. When conducting the furnace, the roof of the formation is anchored with anchors 5. The side wall 6 of the undercut is formed normally to the bedding, and the side walls 7 and 8 of the furnace are formed with a slope on the formation mass, while the side wall 8 is tightened with a grid 9 and secured with anchors 10. Excavation of the mineral in the face, either with the help of blasting operations or with roadheaders. Mineral transport is carried out by conveyor 11 on the formation soil.

This method will allow to intensify the holding of a split furnace.

Claims (2)

1. A method of conducting a split furnace in the development of thick, flat seams of minerals by excavating a soil-access slaughter, including conducting the furnace to the full thickness of the formation with a tunnel-forming access hole with anchoring the roof of the reservoir, in order to intensify the preparatory work for the formation of the excavated soil access hole during the furnace, in the upper ledge of the tunneling inlet, the furnace is carried out with a one-sided layer of the formation, from the side of the array to be developed, at the same time, the width of the underside is equal to the advance of the ledges of the excavated ground-access slab. 2. A method according to claim 1, characterized in that the side wall of the notch is formed normally to the bedding, and the side wall of the furnace opposite to the excavation of the bottom-to-face slaughter is formed, tightened with a grid and ankyed. Sources of information taken into account in the examination 1. Aladyschev V.P. Conducting split furnaces for powerful flat seams with a soil-access excavation .- “Design and reconstruction of coal enterprises, 1974, No. 2, p. 7 2. Kovalenko E.V. and others. Development systems of thick flat seams of the Norilsk field. “Coal, 1962, No. 5, p. 19-20.