Loess hilly-and-gully area coal-mining subsidence and crevice treatment method

A technology for subsidence cracks and gully areas, applied in the direction of filling, etc., can solve the problems of crack reappearance and poor crack treatment effect, and achieve the effect of fast treatment speed, good treatment effect and accelerated ecological reconstruction

Inactive Publication Date: 2014-04-23
XIAN UNIV OF SCI & TECH
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for treating coal mining subsidence cracks in the loess hilly gully area, which has simple steps, reasonable design, convenient implementation and good treatment effect, and can solve the existing problems. There are some problems in the subsidence fracture filling method, such as cracks will reappear after filling, and the crack treatment effect is poor.

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  • Loess hilly-and-gully area coal-mining subsidence and crevice treatment method

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Embodiment Construction

[0062] The method for treating coal mining subsidence cracks in loess hilly and gully areas according to the present invention adopts the filling method of section stripping and staggered backfilling to control the collapse cracks 1 existing in the treated loess hilly and gully areas, and the filling in the collapse cracks 1 The structure from bottom to top is cushion layer 2-1, raw soil layer 2-2 and surface soil layer 2-4, see figure 1 ; The governance process of the collapse crack 1 is as follows:

[0063] Step 1. Division of treatment sections: divide the crack 1 to be treated from front to back along the longitudinal extension direction into multiple treatment sections, the number of the multiple treatment sections is N and the lengths are the same, where N is A positive integer and N>3; the N governance sections are respectively the first section, the second section, ..., the Nth section according to the layout position from front to back.

[0064] In this embodiment, t...

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Abstract

The invention discloses a loess hilly-and-gully area coal-mining subsidence and crevice treatment method. Subsidences and crevices exist in loess hilly-and-gully areas can be treated by the filling method of stripping by segments and staggered refilling, and the filling structure in the subsidences and crevices are divided into a bedding layer, a raw soil layer and a surface soil layer form bottom to top. The treatment processes of the subsidences and crevices include: 1, dividing treatment segments, namely dividing the crevices to be treated into a plurality of treatment segments from front to rear along the vertical extending direction; 2, stripping by segments and refilling in a staggered manner, namely treating the treatment segments respectively from front to rear till treatment on all treatment segments is completed. The method is simple in processes, reasonable in design, convenient to implement and good in treatment effect, and the problems that according to an existing subsidence and crevice filling method, crevices re-appear after filling, crevice treatment effect is poor and the like can be solved effectively.

Description

technical field [0001] The invention belongs to the technical field of crack control in coal mining subsidence areas, and in particular relates to a method for treating coal mining subsidence cracks in loess hilly gully areas. Background technique [0002] Most of the mining areas in western China are located in arid and semi-arid areas, especially the typical landforms of loess hills and ravines. The loess hilly and gully area refers to the low loess loess mountainous area where the surface is cut and broken, the density of gullies is high, the vegetation coverage is low, and the water and soil erosion is serious. Due to serious soil erosion and fragile ecological environment in hilly and gully areas of loess, the characteristics of continuous deformation of surface subsidence in this type of mining area are not obvious, and the surface damage caused by coal mining is mainly subsidence cracks of discontinuous deformation. Among them, the geological disasters in the loess h...

Claims

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Application Information

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IPC IPC(8): E02D17/18
Inventor 陈秋计
Owner XIAN UNIV OF SCI & TECH
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