Autoignition coal gangue flow slope extinguishment and steadiness comprehensive treatment technology

Abstract

The invention discloses an autoignition coal gangue flow slope extinguishment and steadiness comprehensive treatment technology, and belongs to the field of treatment of mineral product waste and ecological environment recovery. The autoignition coal gangue flow slope extinguishment and steadiness comprehensive treatment technology comprises the steps that shallow-hole curtain filling is adopted, and after dedicated grouting pipes (4) which are preset are regularly planted into a slope body of a coal gangue flow slope and grouting is carried out, and steel wire ropes (9) are used for carrying out net-shaped connection on ground surface nodes (5) of the grouting pipes (4). The effect of steel rib piling and the effect of grid connecting piling can be achieved, the effect of solidification grouting or the effect of curtain grouting can be achieved, flow of air and water in the slope body of the coal gangue flow slope can be effectively stopped, the chimney effect is eliminated, when evaporation of water is received, cooling extinguishment is preferentially carried out, a curtain is solidified to block the air and prevent fire, and can achieve the effect of preventing a forward landslide, the foundation is laid for later-stage surface layer ejection grouting blocking and soil dressing vegetation recovery, and the autoignition coal gangue flow slope extinguishment and steadiness comprehensive treatment technology is good in enablement and easy to operate, can ensure that ecological environment comprehensive treatment of the coal gangue flow slope can be achieved fundamentally and rapidly, and is beneficial to human and the society.

Description

technical field [0001] The invention belongs to the field of treatment of mineral waste and restoration of ecological environment, and relates to a technology for fire extinguishing and stabilization of spontaneously combusted coal gangue flowing slopes. Background technique [0002] There are generally two ways to discharge the coal gangue produced by coal mine mining in China. Most of them are discharged by belt conveyors along the accumulation angle and extending to form a cone-shaped cuttings heap (hereinafter referred to as gangue). Some enterprises located in mountainous areas use vehicle transportation to dump coal gangue along the natural mountain slope into the ravine, filling the valley to form a typical stone flow slope landform (hereinafter referred to as coal gangue flow slope), many of its basic characteristics and characteristics are similar to It is the same as the cone-shaped gangue hill, and its accumulation results in a superimposed slope with an angle of ...

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Problems solved by technology

[0004] Deep hole grouting fire extinguishing technology is currently recognized as the safest and most effective gangue hill fire extinguishing technology in China, but it is only a simple transplantation of geological engineering technology, and its implementation methods and index requirements have obvious deficiencies. , with large limitations and limited range, the drilling depth is as large as tens of meters or even tens of meters, the inner diameter of the grouting pipe is small (25mm), the number of grouting holes is small (2 to 30), and the grouting pressure is as high as several MPa. The pulp speed is slow and the flow rate is small (2m 3 per hour), the high pressure of the plunger pump supporting the drilling machine is not positively correlated with fire extinguishing, the fire extinguishing efficiency is low, the implementation is difficult, and the cost is high, so it is not completely suitable for the comprehensive treatment of coal gangue flow slope unstable and prone to spontaneous combustion

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