Pressure relief method aimed at strata behaviors of gob side entries of fully mechanized caving faces
A technology of roadway and work, which is applied in mining equipment, mining equipment, earth-moving drilling, etc., can solve the problems of uncontrolled mine pressure and roadway deformation.
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Embodiment 1
[0016] A pressure relief method for fully mechanized caving work faced with the appearance of mine pressure in empty roadways, comprising the following steps:
[0017] 1) Construction pressure relief groove: construct pressure relief groove 1 from inside to outside on the bottom plate of the roadway, and arrange pressure relief groove 1 at the center line of the bottom plate of the roadway.
[0018] 2) Construction of pressure relief holes: construct two rows of pressure relief holes 2 from top to bottom on both sides of the roadway, each row of pressure relief holes 2 has a diameter of 108mm, a hole depth of 17m, and an upward inclination of 5° 1. The hole spacing is 1.2m; the row spacing of two adjacent rows of pressure relief holes 2 is 0.8m, and the two adjacent rows of pressure relief holes 2 are arranged with triple eyelets.
Embodiment 2
[0020] A pressure relief method for fully mechanized caving work faced with the appearance of mine pressure in empty roadways, comprising the following steps:
[0021] 1) Construction pressure relief groove: construct pressure relief groove 1 from the inside to the outside on the bottom plate of the roadway.
[0022] 2) Construction of pressure relief holes: construct three rows of pressure relief holes 2 from top to bottom on both sides of the roadway, each row of pressure relief holes 2 has a diameter of 108mm, a hole depth of 15m, and an upward inclination of 4° 1. The hole spacing is 1.0m; the row spacing of two adjacent rows of pressure relief holes 2 is 1.0m, and the two adjacent rows of pressure relief holes 2 are arranged with triple eyelets.
Embodiment 3
[0024] A pressure relief method for fully mechanized caving work faced with the appearance of mine pressure in empty roadways, comprising the following steps:
[0025] 1) Construction of pressure relief groove: construct pressure relief groove 1 from inside to outside on the roadway floor of the adjacent roadway. Pressure relief groove 1 is arranged at the center line of the roadway floor. Pressure relief groove 1 is 500mm deep and 425mm wide;
[0026] 2) Construction of pressure relief holes: construct four rows of pressure relief holes 2 from top to bottom on both sides of the roadway, each row of pressure relief holes 2 has a diameter of 108mm, a hole depth of 13m, and an upward inclination of 6° 1. The hole spacing is 1.1m; the row spacing of the two adjacent rows of pressure relief holes 2 is 0.9m, and the two adjacent rows of pressure relief holes 2 are arranged with triple eyelets.
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