Tailing cemented and filled retaining wall device under mine

Abstract

The invention relates to a tailing cemented and filled retaining wall device under a mine. The device comprises a roadway, a wall body and a plurality of dewatering pipes. The wall body divides the roadway into an internal part of a mining area and an external part of the mining area. The wall body comprises a filter fabric, a plurality of layers of stone cages and a plurality of retaining wall crosspieces. The stone cages are filled with mining waste rock. A concrete foundation is arranged below the lower layer of stone cages. The dewatering pipes are arranged in the concrete foundation. Water outlet ports of the dewatering pipes are arranged at the external part of the mining area and water inlet ports of the dewatering pipes are arranged at the internal part of the mining area. The filter fabric is laid on the outer surface of layers of stone cages at the internal part of the mining area. The retaining wall crosspieces are arranged at an upper layer and a lower layer and are fixedly arranged outside the layers of stone cages at the external part of the mining area. Gaps among the two sides and the top of the wall body and the walls of the roadway are blocked and sealed through concrete. The tailing cemented and filled retaining wall device under the mine has the characteristics of excellent wall body stress performance, good slurry retaining effect, good water filtering effect, high erection speed, simplicity and convenience in construction, low cost and the like. At an early filling stage, the dewatering capacity of the retaining wall device is 7-10 times of that of a concrete enclosure wall.

Description

technical field [0001] The invention belongs to the technical field of goaf filling technology in underground mines, and in particular relates to a retaining wall device for tailings cemented filling in underground mines. Background technique [0002] The filling method can be applied to various complex and changeable ore body occurrence conditions, maximize ore recovery rate and reduce mining dilution, effectively control ground pressure activities and ensure mining production safety, protect the surface from damage while maintaining the existing ecosystem. With the depletion of mineral resources in the shallow part of the surface and the increasing depth of mining, the proportion of filling method in mining will increase. [0003] In the mining process of underground filling in mines, setting up isolation retaining walls is an important work that must be completed before filling in goafs. The function of building the filling retaining wall mainly has the following two as...

AI Technical Summary

Problems solved by technology

The construction process of the reinforced flexible retaining wall is complicated, and the quality is difficult to guarantee

These factors have greatly affected the construction speed and quality of the above types of retaining walls, limiting their application

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