(1) along the pulse roadway and through the pulse alley
In order to facilitate prospecting and mining, it is generally close to the lower or upper boundary of the ore body.
The transportation along the veins is mostly used for the recovery of ore bodies below medium thickness. When the ore body is very thick and the mine is arranged in a vertical direction, in order to facilitate the arrangement of the slippery well, the mining of the adjacent ore blocks is not affected by the production, and the tunnel is usually adopted.
When the length of the mine and the column along the strike is relatively large, the mine and the column are separately drilled and transported separately. On the contrary, the transport through the tunnel can be opened outside the junction of the mine and the pillar, sharing a lane.
The section of the transport lane is generally 2.1 × 2.5 m (depending on the transport equipment).
(2) There should be at least two patios in one mine (one is a pedestrian patio and the other is a fixed patio).
1) Pedestrian Patio - Pedestrian patios are generally placed at the lower part of the center of the width of the column.
Connected to the mine through the contact road. This arrangement is beneficial to the maintenance of the patio, the exploration of the boundaries of the ore body and the subsequent mining of the columns.
The cross section of the pedestrian patio is (1.5m~2.0m) × 2.5m2 or 2x2m2, and the inclination angle should be greater than 60°, so that it can be changed into a filling well when returning to the mining column.
Pedestrian patios are generally available for pedestrian ventilation on both sides of the ore body. The advantage is that it can reduce the amount of work involved in tunneling. At the same time, it can adapt to changes in ore body shape.
The cross section of the roadside patio is generally 1.5 x 1.5 m2.
2) Filling wells—The filling wells are generally placed in the center of the mining room on the upper plate to reduce the loading distance of the filling. In addition, in the positioning, the mutual position between the filling well and the slipping mine and the pedestrian well should be taken into consideration, so that it is easy to work and ensure the safety of the work in the mine. The upper outlet of the filling well communicates with the upper or short horizontal lane to pour the filling. The inclination of the filling well should be kept above 60° so that the filling and concrete can be smoothly slid down by their own weight.
The cross section of the filling well should meet the needs of transporting the filling, transporting materials and equipment, so the section of the well should be larger.
(3) mine drainage well
1) Two ore boring wells should be set up in one mine to facilitate the production of another chute when it is blocked or destroyed. (When the mine is very small, sometimes only one slip mine is left).
2) The position of the chute - the chute should be located in the place where the ore transport distance is the shortest, and the transport machinery used at the same time should be different.
3) Flow mine section - usually a circular section with an inner diameter of 1.5 × 1.8 m 2 , which is determined by the ore size and the amount of ore.
4) masonry chute - chute available prefabricated concrete pouring concrete or brick building into, welded steel sheets or cylindrical (e.g. gold ore JIAOJIA, steel sheets are Honghuagou gold)
5) The inclination of the slip mine should be greater than 60°
The lower mouth of the chute is connected to the alley or the cross-country, and has a mine gate.
(4) Contact:
Starting from the bottom plate of the bottom, every 4 to 6 meters in the patio, a contact road is arranged to make it communicate with the mine.
The contact paths of the two patios are preferably staggered in a vertical position to prevent the contact edges in the two patios from being blocked at the same time.
The contact road should be completed at the same time as the tunnel excavation.
The cross section of the contact road is 1.5 × 2 ~ 1.8 × 2 m 2 .
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