Short exploration blowout hole prevention equipment

Abstract

The invention discloses short exploration blowout hole prevention equipment which comprises a pipeline. The pipeline comprises a main pipeline and an auxiliary pipeline. The main pipeline is vertically arranged, the auxiliary pipeline is obliquely arranged on the main pipeline, the main pipeline and the auxiliary pipeline are of a Y-shaped structure, a connecting pipeline perpendicular to the vertical direction of the main pipeline is arranged at the end opening of the auxiliary pipeline, and a filter screen is arranged at the joint of the connecting pipeline and the auxiliary pipeline. The included angle between the main pipeline and the auxiliary pipeline is 45 degrees, and a plug is arranged on the main pipeline and arranged on the main pipeline in a sleeving mode and connected with themain pipeline through threads. An internal thread is arranged on the plug, and an external thread matched with the internal thread is arranged on the main pipeline. The equipment is installed according to the principle of a blowout hole prevention device installed in the advanced hole exploration construction period, connection between the connecting pipeline and the gas extraction pipeline (negative pressure pipeline) of a rear roadway is achieved through the rubber pipe, and the problems that gas is accumulated and exceeds the limit due to the fact that a large amount of gas gushes out in the hole exploration process can be effectively solved.

Description

Technical field: [0001] The invention relates to the field of mining, in particular to a short detection blowout prevention hole equipment. Background technique: [0002] During the excavation process of the 2804 down-trough floor extraction roadway, in order to grasp the two 2 The normal distance between the coal seam and the roof of the roadway ensures that the distance between the roof of the roadway is two 2 The coal seam is not less than 7m, and it is necessary to use a bolter to drill holes to determine the normal distance between the coal seam and the roadway roof to adjust the roadway construction slope before blasting and excavation. However, due to the large gas content in this area, a large amount of gas gushing out often occurs during the drilling process Abnormal phenomena, especially when drilling holes that are not properly sealed, the amount of gas gushing out becomes large enough to cause early warning and alarm of the gas sensor, which brings great safety ...

AI Technical Summary

Problems solved by technology

[0002] During the excavation process of the 2804 down-trough floor extraction roadway, in order to grasp the two 2 The normal distance between the coal seam and the roof of the roadway ensures that the distance between the roof of the roadway is two 2 The coal seam is not less than 7m, and it is necessary to use a bolter to drill holes to determine the normal distance between the coal seam and the roadway roof to adjust the roadway construction slope before blasting and excavation. However, due to the large gas content in this area, a large amount of gas gushing out often occurs during the drilling process Abnormal phenomena, especially when drilling holes that are not properly sealed in advance, the amount of gas gushing out becomes large, causing the gas sensor to give an early warning and alarm, which brings great safety hazards

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