Driving head-on coal slide protective device and head-on closing method of driving working face
A technology of excavation working face and protective device, which is applied in the direction of earthwork drilling, bolt installation, mining equipment, etc. It can solve the problems that gangue is easy to damage construction personnel and the effect of protection is not good, and achieves obvious effect and safe operation. Effect
Inactive Publication Date: 2014-01-29
QIDONG COALMINE ANHUI WANBEI COAL ELECTRICITY GROUP
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Problems solved by technology
[0002] In addition to strengthening the management of the roof, the biggest safety threat to the front of the excavation work face is to seal the exposed front section. After construction, the front section is exposed and the height is relatively large. If the protection effect of the front front section is not good, falling gangue is easy to smash injured construction workers
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[0019] Such as figure 1 As shown, the protection device for the front face of the excavation includes an inverted wedge device. The inverted wedge device includes a long rod 1, one end of the long rod 1 is obliquely cut with a slope 2, and the other end of the long rod 1 is provided with a section It is a trapezoidal protrusion 3 .
[0020] Such as figure 1 , 2 As shown, the method of using the excavation head piece protection device to seal the excavation face head-on is as follows:
[0021] (1) Use the anchor rod 4 and the mesh to seal and reinforce the gangue within the range from the head-on roof to 1.5m below the roof, wherein one end of the anchor rod 4 is provided with a conical steel 5;
[0022] (2) After blasting, carefully observe the frontal section and roof conditions. Before entering the work, first knock on the roof to find out live gangue and dangerous rocks;
[0023] (3) According to the lithology of the front face, an appropriate amount of eye holes ar...
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The invention discloses a driving head-on coal slide protective device and a head-on closing method of a driving working face. The driving head-on coal slide protective device comprises a reverse-wedge type device comprising a long rod. One end of the long rod is provided with an inclined surface, and the other end of the same is provided with a boss with trapezoidal cross section face; anchor stocks and meshes head-on roofs are utilized to perform closing solidification on gangue with 1.5m range under the roofs, and a circular cone steel is arranged at one end of the anchor stocks; after explosion, head-on fracture surface and roof conditions should be observed vividly, and tapping should be conducted first before entering the working surface; appropriate nibs are distributed on the head-on fracture surface according to head-on lithology; a layer of preprocessed mesh is paved on the head-on fracture surface after the nibs are arranged, and head-on fracture surface reverse-wedged device is mounted; at last, the head-on hold punching and filling should be performed, and the head-on reverse-wedged closing device is dismounted after the filling is finished. The reverse-wedged device can be recycled, and filed operation is save, convenient, simple and practical.
Description
technical field [0001] The invention relates to the prevention and control technology of the frontal side of the excavation of the soft rock roadway in the deep well, in particular to a protection device for the frontal side of the excavation and a method for frontal sealing of the excavation working face. Background technique [0002] In addition to strengthening the management of the roof, the biggest safety threat to the front of the excavation face needs to be closed to the exposed front section. After construction, the front section is exposed and the height is relatively large. If the protection effect of the front front section is not good, falling gangue is easy to smash injury to construction workers. Contents of the invention [0003] The invention provides a protection device for the frontal side of the excavation and a method for closing the frontal side of the excavation working face. The frontal section is closed by an inverted wedge device, which can effecti...
Claims
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IPC IPC(8): E21D21/00
Inventor 王华
Owner QIDONG COALMINE ANHUI WANBEI COAL ELECTRICITY GROUP