Overburden water flowing fractured zone observation system and detection drilling method thereof

Abstract

An overburden water flowing fractured zone observation system comprises a drilling machine, a detection drilling device and a water-injection control section, wherein the detection drilling device comprises a drilling bit, a drilling rod and a connection handle, and the detection drilling device can be connected with the drilling machine through the connection handle; the detection drilling device further comprises plugging capsules, connectors and water inlet pipes, and the water inlet pipes can be connected with a hose connection of the water-injection control section. According to the overburden water flowing fractured zone observation system, the detection drilling device is directly arranged on the drilling machine which is used to send the detection device to a targeted position, accordingly, time saving and labor saving are achieved; a control system of the drilling machine is used to control the drilling of the detection drilling device, the controllability is good, the numerical value is accurate and the position error caused by manually placing the detection device is avoided; and with two pipes used for water injection and less water flowing out, the leakage is accurately recorded.

Description

technical field [0001] The invention relates to a coal mine device for detecting the development height of a water-guiding fissure zone in the overlying rock and a method for using the same, in particular to an automatic monitoring system for the height of the water-guiding fissure zone in the overlying rock and a method for detecting and drilling the same. Background technique [0002] In coal mines, especially in coal mine roofs with well-developed fracture zones, it is often necessary to use the method of water injection to measure leakage to detect the size of roof cracks, that is, to drill holes into the coal seam roof with special equipment, and to drill holes in a certain section of the hole. Water is injected into the roof, and the water penetrates into the roof through the cracks. When the water injection reaches saturation, the size of the cracks in the roof is judged according to the actual water injection volume, that is, the amount of leakage, so as to obtain the...

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Problems solved by technology

[0003] In the current detection equipment for double-end plugging water-conducting fissures in overlying rocks, such as CN101892841A, the detection head rod is a hollow structure, and the water inlet pipe is arranged inside the detection head rod. The detection head has poor rigidity and cannot be used on a drilling rig. When working, you need to use a drilling rig to drill out the detection hole, and then manually insert the detection head into the hole

Therefore, the position of the specific detection section is mainly measured and recorded manually. In the case of a bad underground environment, misrecording or misrecording is easy to occur, and when the inner wall of the detection hole has a slight collapse, the detection head may not be inserted manually. At this time, it is necessary to re-drill the hole, which is not only time-consuming and laborious, but also needs to find the detection position again, which greatly affects the detection work of the water-conducting fracture zone in the overlying rock

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