Novel thick coal seam slicing floor automatically laying and networking method

Abstract

The invention provides a novel thick coal seam slicing floor automatically laying and networking method. The novel thick coal seam slicing floor automatically laying and networking method comprises aplurality of hydraulic supports, the tail of the hydraulic supports is provided with a support tail rack, the rear of the support tail rack is connected with a support tail base, the support tail baseis provided with a net roll laying structure and a networking structure, wherein the net roll laying structure is used for mounting or spreading wound net rolls, and the networking structure is fixedonto the net roll laying structure and used for connecting by sewing the lapped parts between a net roll to be laid and a laid net roll. The novel thick coal seam slicing floor automatically laying and networking method improves the support rear base of the hydraulic supports and meanwhile connects the lapped parts between nets through the networking structure by sewing, thereby achieving a thickcoal seam slicing floor automatically laying and networking function, reducing the workload of underground workers, improving the networking efficiency achieving high operability and practicality.

Description

technical field [0001] The invention relates to the technical field of layered mining of thick coal seams, in particular to a novel device for automatically laying and network-connecting floor plates for layer-by-layer mining of thick coal seams and a network-laying method. Background technique [0002] There are a large number of rich coal resources in the central and western regions of my country, and the thickness of some coal seams reaches 20m. Research on the mining technology of such extra-thick coal seams has extremely important strategic significance for the sustainable development of my country's coal resources and the improvement of economic benefits. [0003] The current mining methods for extra-thick coal seams mainly include full-thickness fully-mechanized mining with large mining height, fully-mechanized top-coal caving method and layered mining method. Under the condition of the existing technical equipment, when the thickness of the coal seam exceeds 10m, two...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: 1. The invention pulls the net laying frame and the networking frame through the steel wire rope, and cannot stably fix the net laying frame and the networking frame in the complicated work space underground, which has a great impact on the networking process and leads to the bottom of the networking efficiency , the networking effect is poor; 2. The networking mechanism of this invention is mainly to network the metal mesh, but the long-term physical properties of the metal mesh cannot be fully guaranteed, especially under complex conditions in the mine, it is easier to corrode and damage, and the metal mesh is extremely difficult to carry. It is inconvenient and the labor intensity of workers is very high. At present, plastic nets or polyester fiber nets are mostly used in thick coal seam mining in coal mines. Therefore, it is necessary to design a new networking mechanism to meet the current networking needs of thick coal seam mining

The disadvantages of this invention are: 1. This invention uses flexible networked wires to sew up the overlapping parts of the network like a sewing machine, but in the complex goaf environment of the coal mine, there is a large amount of dust and mine water, and the accuracy of the networked gun needle sewing network The requirements are high, and the networking mechanism is easily affected by dust and coal slime formed in the mine, resulting in low networking efficiency and poor networking effect

[0007] The Chinese patent with the application number 201711118526.X discloses an invention patent for an automatic floor laying network device and method for layered mining of thick coal seams. The sliding mechanism that moves in the length direction of the working face, and install the mesh roll laying mechanism and networking mechanism on its upper part, use the sliding mechanism to drive the mesh rolling mechanism to slide and spread the mesh roll parallel to the mining working face, and use the networking mechanism The overlapped parts of the two nets are stitched and connected to realize the function of automatic networking along the length direction of the working face. However, this patent also uses the networking gun needle to carry the networking line up and down to cooperate with the networking. This networking method has high requirements, especially in In the complex goaf environment, it is necessary to design a new networking mechanism to meet the current networking needs of thick coal seam layered mining

Images