What are the joint development methods for open pit mining?

(1) Railway-road joint transportation development

When the mining depth of the open pit mine exceeds the economically reasonable mining depth of a single railway transportation, it can be developed by rail-road combined transportation, that is, the upper part adopts railway transportation development, the lower part adopts road transportation development, and the middle sets up the inverted loading station. The ore transported by the automobile is directly transferred to the railway vehicle on the transfer platform, or the ore discharged from the automobile is unloaded into the dumping station and re-loaded by the excavator, or the ore discharged from the automobile is transferred into the transfer ore bin and transferred to the railway vehicle through the plate type feeder.

(2) Road-crushing station-belt conveyor transportation development

The shortcomings inherent in railway transportation development and its production process make its reasonable mining depth relatively small; although motor transportation is flexible and has a high climbing ability, it is limited by reasonable transportation distance, and with the decrease of mining depth, transportation efficiency is reduced. The operating expenses increased. At this time, it is possible to adopt a road-crushing station-belt conveyor joint transportation development method. After the blasting, the rock mass is large, and when it is lifted by the belt conveyor, it must first be broken by the crusher to a reasonable block degree.
Road-crushing station-belt conveyor joint transportation development mode Deep ore rock is discharged into the crushing station by automobile transportation. After crushing, it feeds the belt conveyor and is lifted to the surface by the belt conveyor.

The development method uses a bucket as a transport container and consists of four basic parts: a loading station, a slope channel, a ground unloading station, and a hoist device. The interior of the stope needs to establish a transportation connection with the automobile or the railway to form a joint development transportation system with the channel of the bucket slope as the development center, including the internal transportation of the stope (multi-purpose vehicle), ground transportation and reloading.
Due to the repeated reloading in the stope and the surface, the transfer of the transfer station and the extension of the bucket road limit the production capacity of the open pit mine, and it is difficult to expand the production capacity after the bucket lifting system is formed. There are not many mines that have been upgraded by slope buckets.

(4) Highway (railway) - development of Pingshuo

If the ore is not cohesive with the vertical height of the mountain under the mountain, if the ore is not cohesive, in order to shorten the transportation distance, it is considered to use the highway (railway)-Pingyu slipway to develop, that is, the stope rock through the car (or train, shovel) The transporter is unloaded into the stopway and loaded into the ground transportation equipment through the ore discharge facility at the bottom of the chute.