Simple combined filling retaining wall construction method

Abstract

The invention discloses a simple combined filling retaining wall construction method. The method comprises the steps that firstly, short anchor rods, steel bars and other components are constructed onthe lower portions of the two sides of a stope connection roadway, then, a waste stone pile on the lower portion is built through waste stone, and first-time filling of a stope is carried out; then,sand bags, namely filling slurry, are used on the waste stone pile to form a sand bag wall, and second-time filling of the stope is carried out; and finally, waste stone and cement mortar are built onthe sand bag wall to form a waste stone building wall, third-time filling of the stope is carried out, and the height of the waste stone pile, the height of the sand bag wall and the height of the waste stone building wall are all 1 / 3 of the clear height of the connection roadway. The simple combined filling retaining wall construction method has the beneficial effects that the construction process is simple, the construction period is short, cost is low, and the bearing capacity of a filling retaining wall is high; and meanwhile, the filling retaining wall is formed in a graded manner, the stope filling condition can be better observed, and meanwhile the stope filling quality is improved.

Description

technical field [0001] The invention belongs to the field of underground mining filling, in particular to a method for constructing a simple combined filling retaining wall. Background technique [0002] When the filling method is used for mining, before the stope is filled, it is necessary to construct the filling retaining wall. The commonly used construction methods include: masonry method, steel-wood splicing method, waste rock stacking method, etc., and the masonry method is divided into Brick masonry method, reinforced concrete construction method, permeable brick masonry method, etc. No matter which construction method is used, the construction materials need to be transported to the working surface in advance, which requires labor and materials, and the cost is relatively high, and the labor intensity of the workers Larger, and the grout leakage due to lax construction will lead to the collapse of the retaining wall in severe cases. The wooden retaining wall has low...

AI Technical Summary

Problems solved by technology

The cost of concrete retaining wall is high and the maintenance period is long

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 retaining wall, limiting its application

[0003] Patent No. ZL201110056097.4 discloses a method of constructing a filling retaining wall using excavation waste rock and its construction method. Compared with the traditional construction method, the speed is faster, but it cannot guarantee the overall strength of the filling body, and it is easy to cause the collapse of the wall, and the cost of transporting waste rocks is higher, which increases the cost of retaining wall masonry in disguise, so It is only suitable for sealing work when there are upward horizontal layers or when the mining space is small

Patent No. ZL201611058728.5 discloses a highly permeable filling retaining wall in underground mines and its construction method, which is: compacting waste rocks to form a waste rock layer, and then laying a layer of permeable concrete on the waste rock layer to form a permeable concrete layer ; After the concrete of the permeable concrete layer is consolidated, the permeable bricks are built with staggered joints. Although they have better water permeability, although they increase the water permeability, they reduce the overall stability of the wall.

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