A pile-type filling formwork and its application method

Abstract

The invention discloses a stack column type filling formwork and a using method thereof. The stack column type filling formwork is arranged below a top plate, supporting frames spliced together define a cuboid frame structure on the periphery, single supporting frames or integrated bodies formed by single-side-spliced supporting frames are arranged on the two opposite faces of the formwork respectively, and every two adjacent faces are formed by perpendicularly splicing supporting frames at the edges. Each supporting frame is composed of a baffle, framework sleepers and counter-pulled anchor ropes, wherein the framework sleepers are composed of a plurality of parallel transverse sleepers and three parallel vertical sleepers, the transverse sleepers and the vertical sleepers are arranged in a perpendicularly crossing mode, and the counter-pulled anchor ropes are arranged on the vertical sleepers in the formwork center on each side. The framework sleepers make direct contact with the top plate after being spliced to support the top plate. A filling opening is formed in the upper portion of the part, on one side of the formwork, of the baffle. After filling of the formwork, the overall compressive strength of filling columns is improved, the later compression amount of the filling columns is reduced, and the top sinking amount is reduced.

Description

technical field [0001] The invention relates to a pile-type filling formwork and a method for using the same, belonging to the technical field of filling and mining. Background technique [0002] In order to control the surface subsidence caused by "three down" coal mining and the damage to the environment caused by traditional coal mining methods, coal mining enterprises have adopted the full-mining and full-filling coal mining process in recent years. This kind of coal mining technology with filling method has achieved a good control effect on surface subsidence and environmental damage, but there are also major deficiencies: First, because the space required for filling is relatively large due to full mining and full filling, the contradiction between the supply of filling materials and the demand is relatively large. The material cost of the filling process is high; the second is because the filling workload is relatively large, which takes up the working time of the nor...

AI Technical Summary

Problems solved by technology

This kind of coal mining technology with filling method has achieved a good control effect on surface subsidence and environmental damage, but there are also major deficiencies: First, because the space required for filling is relatively large due to full mining and full filling, the contradiction between the supply of filling materials and the demand is relatively large. The material cost of the filling process is high; the second is because the filling workload is relatively large, which occupies the working time of the normal coal mining process, and the original production efficiency of the coal mining face is greatly reduced

[0003] The goaf partial filling methods mainly include strip partial filling and pier column partial filling. Rigid filling slides used in strip filling need to cooperate with special filling hydraulic supports for sliding, which requires high filling hydraulic support equipment; pier columns Flexible geotextile anti-seepage vacuum bags are often used to load filling materials, while paste filling materials have strong fluidity and shape is not easy to control, and flexible geotextile anti-seepage vacuum bags are easily deformed and damaged, resulting in a low rate of filling materials and unable to control the top plate The early subsidence and later strength cannot be guaranteed, and the control effect on the roof of the goaf is not ideal

Images