Construction method for fire prevention and extinguishing and loss prevention of gangue dump

Abstract

The invention discloses a construction method for fire prevention and extinguishing and loss prevention of a gangue dump. The construction method comprises the following steps that S1, a working face is arranged; S2, after the site condition is confirmed, the drilling position is plotted, and a grouting hole and an exhaust hole are drilled; S3, grout is poured through pouring holes; S4, after an upper layer is solidified, an observation hole is drilled to determine the grouting depth, the grouting hole is plugged with foam concrete, the original hole position is laterally moved by 0.5 m, drilling and grouting are conducted with the same method, and grouting of the whole gangue dump is completed; if the structure of the original hole site is intact, the original hole site can be utilized to continue drilling and grouting, so the whole body reaches a complete pouring state; S5, after the whole body is solidified, holes are drilled in all directions for observation, and after it is determined that the pouring rate reaches 80% or above, loess is filled with original drilled holes, and a drainage pipeline is formed; and S6, a retaining wall is built on the outer side of the gangue hill or the position prone to collapse, a surface is covered with loess, and plants are planted on the loess. The method is high in functionality and can be widely applied to the technical field of waste dump treatment.

Description

technical field [0001] The invention relates to the field of waste rock treatment, in particular to a construction method for preventing fire and loss of waste rock. Background technique [0002] The current method of eliminating open coal seam or gangue hill fire has direct fire extinguishing method, isolated fire extinguishing method and combined fire extinguishing method. [0003] 1. The direct fire extinguishing method refers to using fire extinguishing equipment to directly extinguish the fire near the fire source, which is a positive method. [0004] (1) Extinguish the fire with water. Use the mechanical force of strong water flow to suppress the flame of the burning object, and the water can wet the surface of the object to prevent it from continuing to burn. The fire extinguishing method with water is simple and economical, and the water source in the mine is relatively sufficient, so it is widely used. Fire extinguishing with water has the following advantages: w...

AI Technical Summary

Problems solved by technology

However, it has the following disadvantages: it cannot be used to eliminate live electrical equipment and flammable fuel fires; in sulfide mines, the acidic water flowing out from the fire source will promote oxidation more strongly and cause the ore in the adjacent area to self-heat; if Insufficient water consumption, under the action of high temperature in the fire zone, water decomposes into hydrogen and carbon monoxide; water vapor will damage the unstable roadway roof, causing the roof to collapse

[0014] At present, the yellow mud grouting station can prevent coal mines from naturally preventing fires. However, the existing grouting fire prevention system has a large amount of grout loss and low grouting efficiency.

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