A method of using a segmented sealing device for strip partial filling and mining

Abstract

A segmented sealing device for strip partial filling mining and its use method, belonging to the field of coal mining methods, can solve the problem of complicated sealing process, loose sealing, poor roofing effect, Due to the low filling rate of the level roadway, high labor intensity, poor solidification conditions due to the closed filling body during the condensation process and no ventilation, and only suitable for one-side or two-end sealing, etc., the roadway is divided into several sections for filling, and different specifications and layers are used. The I-shaped formwork, end formwork and side formwork are connected by bolts as the sealing device of the filling body. At the same time, the original top anchor and the new bottom anchor method of the roadway are used to connect the mine-used ordinary steel strands to the top, bottom anchor and I-shaped formwork, side formwork and end formwork are tightened to strengthen and fix the formwork. The method is effectively combined with the roadway paste filling process, and the installation and disassembly are convenient, the formwork can be reused, and the use is flexible. It is a reliable, economical and advanced method.

Description

technical field [0001] The invention belongs to the technical field of coal mining methods, and in particular relates to a segmental sealing device for strip part filling mining and a usage method thereof. Background technique [0002] Filling mining is a green mining process that replaces coal resources through filling materials, while reducing roadway excavation, controlling overburden subsidence, and reducing surface movement, thereby improving underground mining conditions, increasing recovery rates, and protecting surface buildings and the ecological environment of the mining area . There are various methods of filling and mining, among which roadway paste filling has the advantages of good slurry fluidity, high density and high filling body strength, so it is relatively effective in controlling the activity of the overlying strata and slowing down surface subsidence. With the continuous update and development of key equipment such as long-distance transportation of hi...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the existing filling body sealing method with complex sealing process, poor sealing, poor roofing effect, low filling rate of the level entry, high labor intensity, poor solidification working condition due to airtight filling body and no ventilation during the condensation process, and only It is suitable for the shortcomings of one-side or two-side sealing, and provides a segmental sealing device and its use method for strip partial filling mining. This method is effectively combined with the paste filling process, and is suitable for one-side solid three-side The roadway slope is less than 5°, easy to install and disassemble, the formwork can be reused, and the use method is flexible. The filling process meets the requirements of roadway wind speed and realizes full wind pressure ventilation, shortens the setting time, improves the setting conditions and construction environment, Improve the roof connection rate, filling rate and filling body strength of the entry road, and reduce the filling cost

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