Filling body under mining method with only toothed jambs left

A mining method and filling body technology, which is applied in underground mining, filling materials, surface mining, etc., can solve problems such as high-efficiency mining, low recovery rate, and difficulty in recovery of original rock horizontal pillars in the later stage, so as to increase economic benefits and reduce mining costs. The effect of improving the one-time high-efficiency recovery rate
CN110295909AActive Publication Date: 2019-10-01BEIJING MINING & METALLURGICAL TECH GRP CO LTD
4 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
Publication Date
2019-10-01

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a filling body under mining method with only toothed jambs left. Mining of a one-step chamber stope and mining of a two-step jamb stope are sequentially carried out, cemented filling is adopted in the chamber stope, and non-cemented filling or cemented filling is adopted in the jamb stope. Coal extraction is carried out on the chamber stope below a filling body in one steptill coal extraction is carried out on the bottom face of the filling body, after coal extraction of the stope is finished, mine rock of the adjacent jamb stope is located on the two sides of a dead zone, the filling body is located at the top, and cemented filling is carried out after ore removal is completed; and coal extraction is carried out on the jamb stope below the filling body in two steps, the bottom face of the filling body is not exposed, and mine rock of a certain height is reserved below the filling body and is not subjected to coal extraction. After coal extraction of a stage mine body below the filling body is completed according to the above manner, no complete protolith horizontal jambs are reserved, only the toothed jambs small in mine quantity are formed, the quantity of the protolith horizontal jambs between stages is reduced, the one-time efficient coal extraction rate of resources in a normal exploitation unit is improved, and then economic benefits of exploitation of mine enterprises are increased.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to an underground mine mining technology, in particular to an underground mining method with only tooth-shaped ore pillars left behind a filling body, which is mainly suitable for safe, economical and efficient mining of underground metal and nonmetal mines. Background technique

[0002] With the continuous improvement of the awareness of mine safety and environmental protection and the increasing emphasis on the recovery rate of mineral resources, the filling and filling mining method has achieved great development and wide application in recent years. Before underground mine filling and mining, it is necessary to carry out reasonable planning and design of mining scheme, mining and filling sequence, ground pressure control and technical economy according to its mining technical conditions, especially the isolation of filling and mining operations between upper and lower adjacent stages. Transition and connection directly affect ...

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