High-water material ground fissure filling system and filling treatment method

Abstract

A high-water material ground fissure filling system and a filling treatment method are applicable to treatment of ground fissures in mining old mined-out areas of west dry mining areas. The high-water material ground fissure filling system comprises a body and an engine, an air compressor, a filling slurry production system and a grout injection system are respectively arranged on the body, high-water filling slurry is injected into the ground fissures through a grout injection pipe, grout injection is stopped when filling height reaches 0.5 meter from the ground surface, high-water filling slurry solidified bodies in the ground fissures are covered with soil after the high-water filling slurry is sufficiently solidified, the soil is compacted after covering, the dry bulk density of a compacted soil body is not lower than 1.3t / m<3> and is suitable for planting vegetations, an arc-shaped fissure slot with the depth of 0.1m-0.2m is constructed in the upper surface of the covering soil, and grass blankets or tree and shrub plants are planted in the fissure slot. The high-water material ground fissure filling system is simple in process, low in cost, dense in filling, fine in water retention performance and high in vegetation survival rate.

Description

technical field [0001] The invention mainly relates to a ground fissure filling system and a filling control method, especially a high-water material ground fissure filling system and a filling control method suitable for the treatment of mined ground fissures in old goafs in western arid mining areas. Background technique [0002] Ground fissure is a typical geological disaster caused by the mining of shallow coal seams in the western mining area. When cracks connect with gobs, safety accidents such as water leakage, air leakage, and water and sand erosion often occur; on the other hand, irreversible damage is caused to the ecological environment, and environmental problems such as surface subsidence, soil erosion, and vegetation degradation are becoming more and more serious. Western mining areas generally have the characteristics of large reserves, shallow burial, and fragile surface ecology. With the implementation of my country's coal westward strategy, the ground fissu...

AI Technical Summary

Problems solved by technology

[0003] Mining ground fissures are divided into two types: temporary cracks during the mining process and permanent cracks after the ground surface has settled. Temporary cracks have a greater impact on mine safety and production. It develops at the same time directly above, and the usual treatment methods are: monitoring at any time, temporary burial, and flattening the surface. The most intensive development is near the cut eye and stop production line. The usual treatment methods include: sand filling, solid waste filling, etc. The disadvantages are: complicated process, high cost, unrealistic filling, unsuitable for water retention, and potential safety hazards, etc.

Generally speaking, due to the different shapes and depths of mining ground fissures, the plane distribution and cross-sectional shape are extremely irregular, the cost of traditional treatment methods is relatively high, and it is difficult to fundamentally eliminate the potential safety hazards of ground fissures, which is harmful to the fragile ecology of western mining areas. The environment's ability to repair is limited

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