Sectional filling method of old lane

Abstract

The invention belongs to the field of mining and relates to a sectional filling method of an old lane. The sectional filling method of the old lane comprises the following steps: A) drawing a stratigraphic relation layout diagram of a working face and the old lane and marking the positions of the old lane, the working face and other lanes, the shoring way of the old lane and other parameters in adetailed manner; B) selecting fly ash or slag ash and other radiation-free materials with lower sulfur content as filling materials, screening the filling materials, then bagging and putting into a well; C) filling the old lane in the position which is ahead of the working face 50m at least, and performing stage-by-stage step-by-step filling on the old lane from the working face to a terminal mining line; and D) performing sectional filling construction. The method has the beneficial effects that the sectional filling is adopted, the filling efficiency is high, the recovery and the filling donot affect each other, the filling cost is low, and the consumed time is short, thereby not only solving the problems of ground pressure occurrence of the working face, roof caving, subsidence of a support, loss of coal resources and the like during the recovery period, but also avoiding the defects of waste of the filling materials and long consumed time for filling.

Description

Technical field [0001] The invention belongs to the field of mining and relates to a segmented filling method for old lanes. Background technique [0002] For the special mining face that passes through the old lane during the advancement process, due to the various layers and layouts of the old lane at the face, the ground pressure of the face will appear, roof fall, and support subsidence during the mining period, which will affect the advancement of the face and cause coal resources. For problems such as loss, all traditional filling methods have the disadvantages of high filling cost, long time-consuming, and easy impact on normal advancement. Summary of the invention [0003] In order to make up for the deficiencies of the prior art, the present invention provides a segmented filling method for old lanes, which not only ensures the filling effect but also avoids filling waste, reduces filling time, and effectively solves the contradiction between filling and norma...

AI Technical Summary

Problems solved by technology

[0002] For the special mining working face that passes through the old roadway during the advancing process, due to the various layers and layouts of the old roadway in the working face, during the mining period, it will cause the appearance of ground pressure on the working face, roof fall, and subsidence of the support, which will affect the advancement of the working face and cause coal resources. The traditional full filling method has the disadvantages of high filling cost, long time consumption, and easy influence on normal propulsion

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