CN-116717309-B - Goaf automatic sealing method

Abstract

The invention discloses an automatic goaf closing method, which is characterized in that an automatic ignition device is arranged in a goaf, the automatic ignition device comprises a storage battery and a conductive loop connected with the storage battery, the conductive loop comprises an upper touch plate and a lower touch plate which are respectively connected with the positive electrode and the negative electrode of the storage battery through wires, the upper touch plate is fixed on a goaf top plate, the lower touch plate is arranged right below the upper touch plate, a metal pipe is connected on the wires communicated with the lower touch plate, the automatic goaf closing device comprises a closing door and a suspension device thereof, a suspension rope of the suspension device penetrates through the metal pipe, the suspension rope penetrates through the metal pipe and is inflammable material, inflammable matters are smeared on the suspension rope, when the goaf top plate is sunk to the upper touch plate and the lower touch plate, the conductive loop is communicated, the suspension rope is burnt by electrifying and heating inflammable matters by the metal pipe, and the closing door automatically drops to close the goaf through the roadway communicated with the goaf, so that the goaf can be closed at an optimal time, the occurrence of disasters can be effectively prevented, the potential hazards can be avoided, and personnel are not required to check.

Inventors

• LIU CHANG
• HUANG CONG
• ZHAO LIANG
• MA RUIFENG
• JIANG FEIFEI
• GUO YUNING
• GUO ZEYANG
• QIN MIN
• QI GUANGLU
• HE HUANSHA
• LV GUANYING
• LI WEIMING

Assignees

• 长沙矿山研究院有限责任公司
• 中国科学院武汉岩土力学研究所

Dates

Publication Date

20260505

Application Date

20230601

Claims (6)

1. 1. An automatic goaf closing method is characterized in that: The method comprises the steps that an automatic ignition device is arranged in a goaf, the automatic ignition device comprises a storage battery and a conductive loop connected with the storage battery, the conductive loop comprises an upper touch plate and a lower touch plate which are respectively connected with the anode and the cathode of the storage battery through wires, the upper touch plate is fixed on a top plate of the goaf, the lower touch plate is arranged right below the upper touch plate, and a metal pipe is connected to the wires communicated with the lower touch plate; A metal rod is vertically welded at the center position of the upper side of the metal tube in the length direction, and the upper end of the metal rod is fixed at the center position of the lower surface of the lower touch plate; the method is characterized in that the method is further provided with an automatic roadway sealing device, the automatic roadway sealing device comprises a sealing door and a suspension device thereof, the suspension device comprises a suspension rope, a fixed pulley and a support column, the suspension rope comprises two sections of steel wire ropes and a inflammable section connected between the two sections of steel wire ropes, the lower end of a longer steel wire rope is fixed at the central position of the upper end of the sealing door, the fixed pulley is fixed on a top plate of a goaf near the roadway through a mounting seat, the longer steel wire rope turns into a horizontal state after bypassing the fixed pulley, the tail end of a shorter steel wire rope is fixed on the support column, and the lower end of the support column is fixed on the bottom surface of the goaf; the suspension rope passes through the metal pipe, the passing section is made of inflammable materials and smears inflammables, the support column is connected with a horizontal rod, and the tail end of the horizontal rod is fixed in the middle of the metal rod through a hoop; When the goaf top plate sinks to the upper touch plate to be in contact with the lower touch plate, the conductive loop is conducted, the metal pipe is electrified to generate heat to ignite inflammable substances to blow the suspension rope, and the sealing door automatically falls to seal a roadway communicated with the goaf.
2. 2. The method for automatically sealing the goaf according to claim 1, wherein the storage battery comprises a plurality of single batteries connected in series, and the anode and the cathode after being connected in series are respectively connected with a wire, wherein one wire is connected with the upper touch plate.
3. 3. The method for automatically closing a goaf according to claim 1, wherein the length of the metal rod is adjustable.
4. 4. The method of automatically closing a goaf according to claim 1, wherein the upper end of the other wire connected with the storage battery is connected to the center of the lower side of the metal pipe.
5. 5. The method of automatically closing a goaf according to claim 1 wherein the support column, the horizontal rod and the anchor ear are made of insulating materials.
6. 6. The method of claim 1, wherein the goaf connecting roadway is symmetrically provided with door sleeves corresponding to two sides of the sealing door, and the height of the door sleeves is larger than the roadway height.

Description

Goaf automatic sealing method Technical Field The invention belongs to the field of mine safety, and relates to an automatic goaf sealing method. Background Goaf refers to a waste space formed after underground solid mineral exploitation, and is a major hazard source for mine safety exploitation. After mining the ore body, the roof of the goaf is inevitably sunk, and collapse is necessarily generated when sinking progresses to a certain extent, so that accidents can be caused, and mine safety production is seriously threatened. Closing goaf is an important measure for isolating dangerous source and preventing safety accident. Theoretically, the goaf should be closed once the mining is finished, but it is difficult to seal the goaf once the mining is finished due to the need for monitoring, drainage and other evacuation or monitoring. The best time for closing the goaf is before the roof is sunk but not sunk greatly, but in engineering practice, the mine is difficult to grasp the closing time, so that two situations often occur, namely, the goaf roof is displaced in a quite large scale to generate great potential safety hazards and even after a safety production accident occurs, the goaf is closed too late, and the goaf is closed too early to cause personnel to enter and exit for observation, and even water accumulated in the goaf is formed into new potential safety hazards. Disclosure of Invention The invention aims to provide an automatic goaf closing method capable of automatically closing a roadway when a top plate of the goaf sinks to a limit position. The goaf automatic closing method is characterized in that an automatic ignition device is arranged in the goaf and comprises a storage battery and a conductive loop connected with the storage battery, the conductive loop comprises an upper touch plate and a lower touch plate which are respectively connected with the positive electrode and the negative electrode of the storage battery through wires, the upper touch plate is fixed on a goaf top plate, the lower touch plate is arranged right below the upper touch plate, a metal pipe is connected to the wires communicated with the lower touch plate, the goaf automatic closing device comprises a closing door and a suspension device thereof, a suspension rope of the suspension device penetrates through the metal pipe, the penetration section is made of inflammable materials and smears inflammables, when the goaf top plate sinks to the upper touch plate to be contacted with the lower touch plate, the conductive loop is communicated, the metal pipe is electrified to heat the inflammables to burn out, and the closing door automatically drops down to seal a roadway communicated with the goaf. When the method is implemented, the storage battery comprises a plurality of single batteries which are connected in series, the anode and the cathode after being connected in series are respectively connected with a wire, and one wire is connected with the upper touch plate. When the method is implemented, the metal rod is vertically welded at the center position of the upper side of the metal tube in the length direction, and the upper end of the metal rod is fixed at the center position of the lower surface of the lower touch plate. When the method is implemented, the length of the metal rod is adjustable. When the method is implemented, the upper end of the other wire connected with the storage battery is connected with the center position of the lower side of the metal pipe. When the method is implemented, the suspension device comprises the suspension rope, the fixed pulleys and the support columns, the suspension rope comprises two sections of steel wire ropes and inflammable sections connected with the two sections of steel wire ropes, the lower ends of the longer steel wire ropes are fixed at the central position of the upper end of the closed door, the fixed pulleys are fixed on a top plate of a goaf near a roadway through mounting seats, the longer steel wire ropes are turned into horizontal after bypassing the fixed pulleys, the tail ends of the shorter steel wire ropes are fixed on the support columns, and the lower ends of the support columns are fixed on the bottom surface of the goaf. When the method is implemented, the support column is connected with the horizontal rod, and the tail end of the horizontal rod is fixed in the middle of the metal rod through the anchor ear. When the method is implemented, the support columns, the horizontal rods and the anchor ear are all made of insulating materials. When the method is implemented, the goaf is communicated with the roadway, door sleeves are symmetrically arranged on two sides of the closed door corresponding to the goaf, and the height of each door sleeve is larger than the height of the roadway. According to the method, mechanics and electricity are organically combined, a linked automatic ignition device and an automatic sealing device are arranged, a passiv