Backfill handling method for activity subsidence area of mine

A technology for subsidence areas and activities, applied in ground mining, earthwork drilling, underground mining, etc., can solve the problems of complex blasting construction, high accident rate of operators and equipment, well flooding accidents, etc. Mechanical properties and coordinated deformation ability, good fluidity effect
CN103216239AInactive Publication Date: 2013-07-24UNIV OF SCI & TECH BEIJING +1
5 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2013-07-24
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a backfill handling method for an activity subsidence area of a mine. The backfill handling method is characterized in that mixed slurry is prepared by mixing high-concentration tail mortar which is obtained by densely dehydrating low-concentration tail mortar through a deep cone thickener (1) with rough aggregates and concrete which are discharged by an aggregate silo (2) and a power silo (3) through a mixer (4); and the slurry is pumped to the subsidence area (6) through a pump (5) so as to be discharged. During the discharging, the subsidence area is backfilled by a discharging mode of plane partitioning staggering and vertical cement and non-cement interbedding; according to the plane partitioning staggering discharging, the subsidence area is divided into a plurality of independent discharging areas on a plane according to a spatial distribution state of the subsidence area, and the mixed slurry is discharged in the staggered manner according to different areas; and according to the vertical cement and non-cement interbedding discharging, cement backfill layers (7) and non-cement backfill layers (8) discharge the slurry in the staggered interbedding manner in the vertical direction of the subsidence area. The backfill method has the characteristics of low backfill cost, safety and reliability in backfill and the like.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] technical field

[0002] The invention relates to a method for backfilling and disposing of subsidence areas of mining activities, which is mainly used for safe, environmentally friendly and efficient disposal of subsidence areas of mining activities, and belongs to the field of mining and geological disaster management.

[0003] Background technique

[0004] According to statistics, since the founding of the People's Republic of China, there have been 10,689 geological disasters caused by mine development in my country, and about 4,779 people died. Among them, there were 8320 ground subsidences and 535 deaths. Judging from the occurrence frequency (77.83%) and the number of deaths (11.2%) in the subsidence area, the surface subsidence in the mining area is the most serious mine geological disaster.

[0005] At present, the usual way to deal with the subsidence area of ​​the mine surface is to use mine waste (coal gangue, fly ash, waste rock, etc.) to directly backf...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More