Repair method of striped subsidence pit

Abstract

The invention discloses a repair method of a strip-shaped collapse pit. The repair method comprises the following steps: soil in a back edge crack area of the strip-shaped collapse pit is stripped, so that a pit wall bottom edge boundary smoothly extends from a strip-shaped collapse pit bottom edge to a back edge no-crack area; a crack in a strip-shaped collapse pit front edge is filled; the pit wall of the strip-shaped collapse pit is leveled; the strip-shaped collapse pit are filled with solid waste mixed materials; and the primary soil coating and the secondary surface soil recoating are performed in a backfill area. The soil in the crack area on the back edge of the strip-shaped collapse pit is stripped to reduce the crack generation area and to widen the back edge area, so that such conditions as slope instability induced by disturbance and vibration in the collapse pit repair are prevented; and the pit bottom conditions of the to-be-backfilled area of the strip-shaped collapse pit are improved, so that the backfilling stability in mountainous regions is improved.

Description

technical field [0001] The invention relates to technical fields such as mining, restoration and utilization of land and mine geological environments, and in particular to a method for repairing striped subsidence pits. Background technique [0002] my country's energy consumption ranks first in the world, and coal resources play an important role in my country's energy consumption. In my country, the mining of coal resources has induced a large number of environmental problems in mines, such as groundwater pollution, destruction of land resources, secondary geological disasters in mines, and destruction of mine landscapes. Among them, the mining subsidence problem is one of the most common mine environmental geological problems in coal mines, which not only destroys a large number of land resources and landscapes, but also causes serious unsafe hidden dangers to the production and life in and around the mining area. [0003] Striped subsidence pits are a special mining sub...

AI Technical Summary

Problems solved by technology

Many strip-shaped subsidence pits that occur in mountainous landform areas may easily induce secondary geological disasters such as landslides and collapses in mines if they are not treated in time, posing a serious threat to the production of mining enterprises and the safety of surrounding people

At present, there is no systematic repair method for the restoration and treatment of striped subsidence pits in my country. In many areas, the striped subsidence pits are not treated or simply backfilled with soil.

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