Natural caving method based surface collapse range control method

Abstract

The invention relates to a natural caving method based surface collapse range control method. The method comprises the following steps: acquiring a conventional collapse range line, determining a controlled collapse range line, cleaning humus soil, building a water intercepting and draining ditch, constructing a joint cutting and drilling hole, piling up a slag discharging platform, piling up waste rock to strengthen collapse and respective conditions thereof, the method has the advantages that the construction operation is simple, the cost is relatively low, the effect is obvious, the surface collapse range can be effectively controlled, the influence of surface collapse on surrounding buildings or structures and the earlier-stage investment cost are reduced and the like, and the method is suitable for mining or civil buildings.

Description

technical field [0001] The invention relates to a method for controlling the range of ground subsidence, in particular to a method for controlling the range of ground subsidence by a natural caving method, which is suitable for mining or industrial and civil construction applications. Background technique [0002] The natural caving method refers to the fact that there are joints, cracks, weak surfaces, interlayers and other imperfections in the ore and rock mass. After the formation of large-scale bottoming and side cutting projects in the entire stage, natural caving occurs under the action of self-weight and ground pressure. , and broken into pieces, so as to realize the process method of falling ore. The ore that falls naturally is released through the mining roadway, and is loaded and transported away in the stage transportation roadway. After the lower part of the ore block was bottomed out, the ore lost its support. Under the action of gravity and ground pressure, cr...

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Problems solved by technology

[0004]The problems existing in the natural caving method in practice are: first, the impact air wave hazard, the debris flow hazard, the hazard caused by the handling of the bucket and the improper suspension of the roof, and the secondary damage to the surface subsidence pit. Geological disasters occur, that is, safety issues; second, the initial investment is large, and it takes a long time to reach production; the rate of large pieces of caving ore is high, and the time and economic cost of processing is relatively high; The fourth is that the bottom structure is severely damaged, resulting in the failure of the mining method, that is, technical problems

We know that the scope of land subsidence formed by the natural caving method determines the scope and cost of land demolition. For areas near villages, roads and other buildings and structures, the scope of surface subsidence even determines whether the mining method can be successfully applied. Even if land acquisition and demolition are allowed, Its investment cost will also increase significantly. In addition, the surface subsidence pit formed by the natural caving method is very prone to secondary geological disasters, and the safety problem is relatively large.

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