The present invention discloses a dendritic reverse underground mining method for a thin coal seam at an end slope of a strip mine. The method includes the following steps: step S1: using a continuous coal mining machine to excavate a main adit toward a boundary of the strip mine along a seam floor; step S2: excavating secondary adits on two sides of the main adit obliquely in a forward direction of the main adit; step S3: transporting the excavated coal out of the main adit by the self-moving belt conveyors; step S4: after the excavating of a secondary adit of the secondary adits is ended, withdrawing the continuous coal mining machine and the self-moving belt conveyor from the secondary adit, and then excavating subsequent secondary adits of the secondary adits in a similar way; step S5: filling the secondary adits, and filling a goaf of the main adit.

Provided is a method for radially mining open-pit end slope pressed coal, including: L-shaped or U-shaped main tunnel arrangements, and radially mining; branch tunnels are formed by excavating tunnels in directions perpendicular to or obliquely crossing the main tunnel from the L-shaped or U-shaped main tunnel; In the mining method, a coal mining system and a transportation system both adopt a remote control mode, a tunneling machine excavates a tunnel to product coal; a rubber belt conveyor conveys coal; the main tunnel adopts an exhaust ventilation mode, the branch tunnels adopt a blowing ventilation mode; the lengths of the branch tunnels do not exceed a farthest control distance of a remote control system; the length of each main tunnel needs to ensure that all the end slope pressed coal is mined under the premise that the branch tunnels do not exceed the farthest control distance of the remote control system.

An aspect of the present invention relates to a method of mining in a rock formation, comprising: drilling blastholes extending into the rock formation, each of the blastholes having a depth between a first end and a second end, wherein for each blasthole the second end thereof is deeper into the rock formation than the first end thereof; loading the blastholes with alternating layers of explosives charges and stemming material to establish a succession of blasting decks or sections extending across and within the rock formation including a first blasting deck or section and at least a second blasting deck or section, wherein each blasting deck or section beyond the first blasting deck or section extends deeper into the rock formation than the first blasting deck or section; and after establishing the multiple blasting decks or sections extending across and within the rock formation, selectively initiating the explosives charges in a series of stages based on blasting deck or section proceeding consecutively from the first blasting deck or section to each successive blasting deck or section, wherein during initiating the explosives charges in a given blasting deck or section, the explosive charges in each deck or section successive to the given blasting deck or section are slept, and wherein after each stage excavation takes place to progress mining in an intended direction

An aspect of the present invention relates to a method of mining in a rock formation, comprising: drilling blastholes extending into the rock formation, each of the blastholes having a depth between a first end and a second end, wherein for each blasthole the second end thereof is deeper into the rock formation than the first end thereof; loading the blastholes with alternating layers of explosives charges and stemming material to establish a succession of blasting decks or sections extending across and within the rock formation including a first blasting deck or section and at least a second blasting deck or section, wherein each blasting deck or section beyond the first blasting deck or section extends deeper into the rock formation than the first blasting deck or section; and after establishing the multiple blasting decks or sections extending across and within the rock formation, selectively initiating the explosives charges in a series of stages based on blasting deck or section proceeding consecutively from the first blasting deck or section to each successive blasting deck or section, wherein during initiating the explosives charges in a given blasting deck or section, the explosive charges in each deck or section successive to the given blasting deck or section are slept, and wherein after each stage excavation takes place to progress mining in an intended direction

The invention is directed to a method of strip mining that involves dividing the pit into blocks in a diamond shape arrangement with an angular advancing strike face and removing waste material from each diagonally adjacent block so as to minimize the amount of waste material pushed by dozers and maintain the incline of ramps to gradients of 10% or less so that trucks can take mined ore from the pit.

The invention is directed to a method of strip mining that involves dividing the pit into blocks in a diamond shape arrangement with an angular advancing strike face and removing waste material from each diagonally adjacent block so as to minimize the amount of waste material pushed by dozers and maintain the incline of ramps to gradients of 10% or less so that trucks can take mined ore from the pit.

A system to process and handle minerals, aggregates, or ore during mining operations in a way that automatically collects, carries and transmits data about the product being mined. When mining coal, the system has a loader with a tag writer and coal loadable trucks with beds having read and writeable electronic tags mounted externally.

A system to process and handle minerals, aggregates, or ore during mining operations in a way that automatically collects, carries and transmits data about the product being mined. When mining coal, the system has a loader with a tag writer and coal loadable trucks with beds having read and writeable electronic tags mounted externally.

A system to process and handle minerals, aggregates, or ore during mining operations in a way that automatically collects, carries and transmits data about the product being mined. When mining coal, the system has a loader with a tag writer and coal loadable trucks with beds having read and writeable electronic tags mounted externally.

The present invention discloses a dendritic reverse underground mining method for a thin coal seam at an end slope of a strip mine. The method includes the following steps: step S1: using a continuous coal mining machine to excavate a main adit toward a boundary of the strip mine along a seam floor; step S2: excavating secondary adits on two sides of the main adit obliquely in a forward direction of the main adit; step S3: transporting the excavated coal out of the main adit by the self-moving belt conveyors; step S4: after the excavating of a secondary adit of the secondary adits is ended, withdrawing the continuous coal mining machine and the self-moving belt conveyor from the secondary adit, and then excavating subsequent secondary adits of the secondary adits in a similar way; step S5: filling the secondary adits, and filling a goaf of the main adit.