Substitution mining support frame

Abstract

A kind of replacement mining support frame: hinge sleeve is set on section bar as required to bear force, i.e. into force plate, front support arm, front support top beam, rear support top beam, bottom support plate, back force plate; Force plate, front support arm are hingedly connected by hinge shaft as required to form lifting frame; Front support top beam is hingedly connected to the front support arm of lifting frame, rear support top beam is hingedly connected to the top of lifting frame, bottom support plate is hingedly connected to the bottom of lifting frame, back force plate is hingedly connected to the rear side of lifting frame, return spring is arranged at the intersection of front support arm and force plate, steel wire rope clamp is arranged at the corresponding position of the edge of lifting frame, to form replacement mining support frame unit; When mining, replacement mining support frame unit is arranged at interval of about 0.2 meters along the back mining working face, front support top beam front pushing force point is placed at the intersection of roof and working face, back force plate is the goaf filled with tailings, steel wire rope is used to connect replacement mining support frame unit through steel wire rope clamp, then back force net is hung on back force plate to form replacement mining support frame.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mine support, and particularly relates to a replacement mine support technology. BACKGROUND

[0002] In underground mining, the support of the working face has timber roof support, single hydraulic support, hydraulic shield support, flexible shield support, and comprehensive mining equipment support, etc. However, all the supports have to face the collapse of the mined-out area. On the one hand, after mining, there is a large amount of mined-out area space that needs physical backfilling. At present, the roof collapse backfilling is mostly used, but the collapse area is large and the pressure is huge, and various technical and safety problems are inevitable, especially after the collapse, which will cause groundwater and some geological problems. On the other hand, tailings cannot be effectively filled into the mined-out area, but are discarded on the ground to become a source of pollution.

[0003] The present application aims at the current mining, support, and filling of the mined-out area of the underground working face, and changes it into a replacement relationship, that is, the ore is replaced by tailings filling through the replacement mine support frame shield, so that there is no empty space, the roof will not collapse, and many problems caused by the roof collapse will not occur, and the problem of tailings stacking is solved. SUMMARY

[0004] The replacement mine support frame of the present application is composed of a lifting frame, a front support roof beam, a rear support roof beam, a bottom support plate, a steel wire rope and a steel wire rope clamp, a back force spring, a back force plate, and a back force net.

[0005] The application is a replacement mining support frame: hinge sleeves are arranged on a profile according to design requirements, i.e. a force bearing plate, a front support arm, a front support top beam, a rear support top beam, a bottom support plate and a back force plate; the force bearing plate and the front support arm are hingedly connected to form a lifting frame; the front support top beam is hingedly connected to the front support arm of the lifting frame, the rear support top beam is hingedly connected to the top of the lifting frame, the bottom support plate is hingedly connected to the bottom of the lifting frame, the back force plate is hingedly connected to the side of the lifting frame, a return spring is arranged at the intersection of the front support arm and the force bearing plate, and a steel wire rope clamp is arranged at the corresponding position of the side of the lifting frame, which together form a replacement mining support frame unit; during mining, the replacement mining support frame units are arranged at intervals of about 0.2 meters along the direction of the recovery working face, the front pushing force point of the front support top beam is arranged at the intersection of the roof and the recovery working face, the back force plate is arranged in the goaf filled with tailings, the return spring provides an initial support force for the replacement mining support frame unit, the steel wire rope is used to connect the replacement mining support frame units through the steel wire rope clamp, and the back force net is hung on the back force plate, i.e. the replacement mining support frame arranged along the recovery working face is formed. Then, the goaf outside the back force net can be filled with tailings, and the tailings will generate a forward pushing force after being attached to the roof, the pushing force is transmitted to the front support top beam through the front support arm of the lifting frame, the front pushing force point of the front support top beam acts on the original ore layer of the recovery working face, and the original ore layer will generate a counterforce at the same time, due to the action of the lifting frame, upward and downward components will also be generated and act on the roof and the floor at the same time, the material of the support frame has sufficient compressive strength, and the dynamic balance force of the forward pushing force of the tailings, the counterforce of the original ore layer of the recovery working face and the support component and the roof-floor counterforce of the replacement mining support frame is formed, and the mining activity area of the recovery working face protected by the replacement mining support frame is a safe space. A piston type hydraulic tailings filling machine is arranged at the intersection of the recovery working face and the air return roadway, and the tailings are filled into the goaf as needed. The mining activity of the recovery working face is a gradual process, the recovery working face gradually moves forward, and the replacement mining support frame will move forward under the push of the tailings, and the goaf filled with tailings will also be increased forward at the same time, so that the tailings are filled into the goaf at the same time as mining, the ore is replaced, the roof will not collapse, the problems related to the collapse of the roof will not occur, and the discarded tailings will not be discarded on the ground to become a pollution source.

[0006] When the amount of tailings is insufficient during the actual use of the replacement mining support frame, other waste can be filled. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 : Lifting frame composition materials and schematic diagram.

[0008] Figure 2 : Replacement mining support frame unit composition schematic diagram.

[0009] Figure 3: Displacement mining support frame monomer front, side, overhead projection schematic diagram.

[0010] Figure 4 : Displacement mining support frame support mining working face transverse section and stress schematic diagram.

[0011] Figure 5 : Hydraulic piston type tailings slag filling machine composition schematic diagram.

[0012] Figure 6 : Displacement mining support frame support mining working face overhead projection schematic diagram.

[0013] Figure 7 : Displacement mining support frame support mining working face stereographic projection schematic diagram.

[0014] Figure 8 : Displacement mining scheme side section projection schematic diagram.

[0015] Figure 9 : Displacement mining scheme side section back force plate and back force net security show schematic diagram. DETAILED DESCRIPTION

[0016] The following further describes the specific embodiments of the displacement mining support frame of the present application in combination with the above-mentioned examples.

[0017] Example 1: The displacement mining support frame of the present application is composed of a lifting frame 7, a front support roof beam 8, a rear support roof beam 9, a bottom support plate 12, a steel wire rope and a steel wire rope clamp 11, a back force spring 48, a back force plate 10, and a back force net 44.

[0018] The invention is a replacement mining support frame: hinges 1 are arranged on the profile 4 according to the needs, and a force bearing plate 5, a front support arm 6, a front support top beam 8, a rear support top beam 9, a bottom support plate 12, a back force plate 10 are formed; the force bearing plate 5 and the front support arm 6 are hinged by a hinge shaft 2 to form a lifting frame 7; the front support top beam 8 is hinged in front of the lifting frame 7, the rear support top beam 9 is hinged at the top of the lifting frame 7, the bottom support plate 12 is hinged at the bottom of the lifting frame 7, the back force plate 10 is hinged at the back of the lifting frame 7, a return spring 48 is arranged at the intersection of the front support arm 6 and the force bearing plate 5, and a steel wire rope clamp 11 is arranged at the corresponding position of the edge of the lifting frame 7, which together form a replacement mining support frame single body 24; during mining, the replacement mining support frame single body 24 is arranged along the direction of the back mining working face 47 at an interval of about 0.2 meters, the front pushing point of the front support top beam 8 is located at the intersection of the roof 15 and the back mining working face 47, the back of the back force plate 10 is the goaf filled with tailings stones 18, the return spring 48 provides an initial support force to the replacement mining support frame single body 24, the steel wire rope is connected by the steel wire rope clamp 11, and the back force net 44 is hung on the back force plate 10, thereby forming the replacement mining support frame arranged along the back mining working face. Then, the goaf outside the back force net 44 can be filled with tailings stones 18, and after the tailings stones 18 adhere to the roof 15, a forward pushing force 19 is generated, which is transmitted to the front support top beam 8 through the front support arm 6 of the lifting frame 7, and the front support top beam 8 acts on the original ore layer 16 of the back mining working face 47, thereby generating a reaction force at the same time. Due to the action of the lifting frame 7, upward and downward components 21 and 22 are also generated and act on the roof 15 and the floor 17. The material of the lifting frame 7 has sufficient compressive strength, thereby forming a dynamic balance force of the pushing force 19 of the tailings stones 18, the reaction force of the original ore layer 16 of the back mining working face 47, the support components 21 and 22 of the replacement mining support frame, and the reaction force of the roof and floor. The mining activity area of the back mining working face 47 protected by the replacement mining support frame is a safe space. A piston type hydraulic tailings stone filling machine 25 is arranged at the intersection of the back mining working face 47 and the return airway 46, and the tailings stones 18 are filled into the goaf as needed. The mining activity of the back mining working face 47 is a gradual process, and the back mining working face 47 gradually moves forward, and the replacement mining support frame moves forward accordingly under the pushing of the tailings stones 18, and the goaf filled with tailings stones 18 also synchronously increases forward correspondingly. In this way, the tailings stones 18 are filled into the goaf synchronously with the mining, the ore is replaced, the roof 15 will not collapse, and the problems related to the collapse of the roof will not occur, and the discarded tailings stones 18 will not become a pollution source on the ground.

[0019] When the amount of tailings stones 18 is insufficient during actual use of the replacement mining support frame, other waste can be filled.

Claims

1. A displacement mining support frame, characterized in that : Including replacement mining support frame single body (24), the replacement mining support frame single body (24) includes force plate (5), front support arm (6), front support top beam (8), rear support top beam (9), back force plate (10), bottom support plate (12); Force plate (5), front support arm (6) are hinged by hinge shaft (2) and constitute lifting frame (7), and the front support arm (6) and the force plate (5) are hinged after the front support part extends in the forward direction; Front support top beam (8) is hinged on the top of the front support arm (6) of lifting frame (7), rear support top beam (9) is hinged on the top of lifting frame (7), bottom support plate (12) is hinged on the bottom of lifting frame (7), back force plate (10) is hinged on the side of lifting frame (7), the intersection part of front support arm (6) and force plate (5) is provided with back force spring (48), and steel wire rope clamp (11) is arranged on the side of lifting frame (7); When mining, the replacement mining support frame single body (24) is arranged at 0.2 meter interval along the back mining working face (47), the front pushing force point of the front support top beam (8) is arranged at the intersection of the roof (15) and the back mining working face (47), the front support top beam (8) and the rear support top beam (9) are staggered and parallel and the top surfaces are in contact with the roof (15), the bottom support plate (12) is arranged on the floor, one side of the back force plate (10) is the goaf filled with tailings stones (18), the replacement mining support frame single body (24) is connected by steel wire rope through the steel wire rope clamp (11), then the back force net (44) is hung on the back force plate (10) to form the replacement mining support frame, then the goaf outside the back force net (44) is filled with tailings stones (18), and the tailings stones (18) are connected with the roof (15).

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