3results about How to "Realize green mining" patented technology

The invention provides a coal gangue filling post-production water reducing method, and relates to the technical field of green mining of coal mines. The method comprises the following steps: determining the position and row pitch of grouting holes according to the position of a coal mine goaf and the diffusion radius of coal gangue slurry; analyzing the overlying strata of the coal mine goaf, and determining the development height of the caving zone; according to the development height of the caving zone, the vertical depth between a grouting end hole and a corresponding grouting hole is calculated, and the grouting end hole is located at the top of the caving zone; drilling is conducted according to the position, the row pitch and the vertical depth of the grouting holes; and coal gangue slurry is injected into the grouting holes to fill the goaf in the coal mine, and the bleeding rate of the coal gangue slurry meets the preset requirement. By means of the mode, coal seam roof cracks can be filled and blocked, a supply channel is blocked, the water inflow of a mine is reduced, and meanwhile part of mine water can be consumed through manufacturing of coal gangue slurry. The coal gangue is subjected to underground treatment, the problem that the coal gangue is stacked on the ground to pollute the environment is solved, and green mining of a coal mine is achieved.

This invention belongs to the field of oil extraction, specifically relating to a method, system, and equipment for benchmarking oil production process indicators. It aims to address the shortcomings of existing technologies in establishing a comprehensive, systematic, and advanced benchmarking system for mechanical oil production process indicators, particularly in the overall representation of economic indicators, the correlation between technology and economics, and the availability of applicable benchmarking methods. The invention includes: acquiring the technical and economic indicators of mechanical oil production; classifying existing oil reservoirs into loose sandstone reservoirs, heavy oil reservoirs, deep low-permeability reservoirs, and ultra-high water-cut reservoirs; obtaining the average values ​​of each indicator participating in the benchmarking within a set range for different types of reservoirs; and comparing the average values ​​with benchmark values ​​to obtain the benchmarking results. This invention optimizes the mechanical oil production process through systematic benchmarking analysis technology and economic indicators, improving the scientific nature of decision-making, production efficiency, and resource utilization, while reducing costs and enhancing environmental protection.

The present invention relates to the field of filling technology, and more particularly to a gangue solid waste filling method based on an underground TDS system. An underground gangue filling system is constructed by utilizing an idle tunnel near an underground concentrated gangue bin. Gangue enters a jaw crusher from the front end of the underground gangue filling system through a mine car for crushing. Gangue screened out by a TDS intelligent gangue selection system in the underground concentrated gangue bin is also conveyed to a double-stage crusher through a feeder. After the double-stage crushing is completed, it is conveyed to a vibrating grading screen through an anti-skid belt conveyor for gangue particle size screening. Unqualified gangue is returned to the double-stage crusher through an anti-skid belt conveyor for re-crushing. Qualified gangue enters a finished product horizontal buffer bin after screening, is weighed and lowered to a mixer, and is stirred by water injection. After being stirred evenly, it becomes a filling slurry. The present invention occupies a small space, saves engineering quantity, and has high efficiency. It has practical guiding significance for realizing the non-lifting of gangue, resource utilization of underground solid waste, and green mining of coal mines.