There is described an interior positioning system for tracking spatial position of communication devices within a remote location. The interior positioning system generally has: a radio frequency network distributed through said remote location; beacons spaced-apart from one another throughout said remote location and powered by said radio frequency network, each beacon locally emitting a corresponding beacon identifier which when received by a nearby communication device is communicated over said radio frequency network by said communication device; and a tracking controller being communicatively coupled to said radio frequency network, said tracking controller stored thereon tracking data associating each of said beacon identifiers to respective spatial coordinates, and instructions that when executed perform the steps of: receiving said beacon identifier communicated over said radio frequency network by said communication device, and determining spatial coordinates of said communication device by cross referencing said received beacon identifier to said tracking data.

Provided is an ultra-large physical simulation facility for deep engineering disasters, including a long-time large-load loading system for a geological model, a 3D printing system of a deep oil, gas and water multiphase multi-component complex geological body model, a high-temperature-chemical-multiphase fluid collaborative injection, monitoring and control system, a robot excavation and monitoring system for a complex engineering structure in a model under deep geological environment, an intelligent ventilation system for a deep metal mine complex drilling, mining and transferring network, an intelligent filling system for a deep metal mine ultra-large stope, a deep-well enhanced geothermal safe intelligent mining system, an all-spatial-temporal intelligent high-precision monitoring system for an excavation and fracture process of a large-scale geological model, and an ultra-large multi-task intelligent collaborative main control and digital twin system for physical simulation tests.

Provided is an ultra-large physical simulation facility for deep engineering disasters, including a long-time large-load loading system for a geological model, a 3D printing system of a deep oil, gas and water multiphase multi-component complex geological body model, a high-temperature-chemical-multiphase fluid collaborative injection, monitoring and control system, a robot excavation and monitoring system for a complex engineering structure in a model under deep geological environment, an intelligent ventilation system for a deep metal mine complex drilling, mining and transferring network, an intelligent filling system for a deep metal mine ultra-large stope, a deep-well enhanced geothermal safe intelligent mining system, an all-spatial-temporal intelligent high-precision monitoring system for an excavation and fracture process of a large-scale geological model, and an ultra-large multi-task intelligent collaborative main control and digital twin system for physical simulation tests.

A mining system for directing mine operations including a flow planner and a dispatcher. The flow planner receives operating parameters and global mine data and calculates a flow plan based on the operating parameters and the global parameters. The dispatcher then determines dispatch assignments based on the flow plan from the flow planner, and effects a dispatch of mining equipment based on the dispatch assignments.

The system includes beacons, readers, controllers, a display and connectivity. The beacons: are selectively actuable; have unique identifiers; when active, receive a type; when active and in motion, emit a signal including identifier and type; when active, periodically emits the signal. Readers: receive signals; identify beacons that have attained proximity. Controllers: receives signals; identifies beacons that attained proximity; have programmable logic and a relay responsive thereto and signals. The display displays: zones associated with readers and controllers; active beacons in zones, the entry of beacon into zones being associated with that beacon having attained proximity to the associated reader or controller; active beacons not in a zone. The connectivity: receives from the controllers and readers the identifiers of beacons determined to have attained proximity thereto and deliver same to the display; permits users to associate a type and a location to an identifier and write a type to a beacon.

Disclosed is a graded plugging, monitoring and reinforcing integrated method for separation stratum grouting under single-side open conditions, falling within the technical field of coal mine filling and mining. The method specifically includes the following steps: analyzing the development law of a separation stratum, determining the scope of protective coal pillars for a surface building/structure, constructing a combined plugging dam, monitoring and evaluating the combined plugging dam, and implementing local reinforcement measures. The combined plugging dam proposed in the present disclosure can effectively prevent grout from flowing and migrating towards the remaining space of a target separation stratum above a mined area during grouting under single-side open conditions, enhancing the effectiveness of separation stratum grouting.

A mining system for directing mine operations including a flow planner and a dispatcher. The flow planner receives operating parameters and global mine data and calculates a flow plan based on the operating parameters and the global parameters. The dispatcher then determines dispatch assignments based on the flow plan from the flow planner, and effects a dispatch of mining equipment based on the dispatch assignments.

A method for determining a position of a first wireless device in an underground environment is provided. The method includes obtaining a plurality of position estimations of the first wireless device in the underground environment. The plurality of position estimations are obtained from different positioning services. The method further includes obtaining quality indicators indicating respective qualities of the plurality of position estimations in the underground environment. The method further includes selecting a position estimation out of the plurality of position estimations based on the obtained quality indicators. The method further includes determining the position of the first wireless device based on the selected position estimation.

The present invention relates to a technical solution of unloading pressure and shocking preventing, achieved by 3D stratified buffer and energy absorbing belt in thick coal seam. It is a technology for Prevention and Control of the Impact of Ground Pressure in Coal Mines that with Thick Coal Seam Bottom Roadway. Firstly, determine the distribution length L of the supporting stress curve along the advancing direction of the working face, divide the independent impact prevention unit by L, and sequentially determine the length L1 of the stress elevation zone, the length L2 of the stress critical load zone, the length L3 of the stress decline zone, and the length L4 of the stress static load zone, and also determine the different parameters of the spacing of the cutter drilling holes within the different stress zones; In the vertical direction of the working face, determine the height of the coal body stress stabilization zone H1, the height of the stress increase zone H2 and the height of the stress superposition zone H3 in turn, and determine the parameters of the cut slits and the location of the blocking grooves in different zones within the different stress zones. The appropriate jet parameters are adopted in different stress areas, and barrier slots are formed by continuous cutting at the junction of different partitions, which can both perform the function of coal unloading and block the stress transfer, solving the problems of insufficient and uneven unloading of coal seams.

A method is provided, which includes receiving an indication from a first safety system associated with an isolated operating area that a safety operation is to be performed for the work machine operating in the isolated operating area, determining, in response to receiving the indication, a status of a second safety system associated with the work machine, determining, based on the safety operation and the status of the second safety system associated with the work machine, an adapted safety operation, and controlling operation of the work machine based on the adapted safety operation.