Method for multi-section blocking of covering rock damage band and synchronous leakage measuring

Abstract

The invention discloses a method for multi-section blocking of overburden failure section and synchronous leakage measuring. The operation step includes boring upcoming holes with 30-50m depth in top-board rock stratum in a coal rock lane, installing a detection system and sending the detection system to the initial position of the bored holes, enclosing the bored holes with a plugging system, sending a water source with specific pressure to a water inlet pipe through a water flooding operating bench, controlling the gas pressure in a plugging capsule to be slightly higher than the gas pressure and the water pressure in a water returning pipe in a blocking chamber, correcting the water pressure in the water returning pipe, measuring the running water vector parameters, starting an electronic recorder and providing corresponding water source pressure after the water pressure in the water returning pipe is adjusted to a reasonable water pressure scope, recording water flow data and other related data after stabilizing, processing and analyzing collected data to form corresponding running water vector graph of the measuring section, and repeating the above steps to sequentially measure the bored holes. Multi-section and synchronous measuring top-board water guiding cracking section at any angle can be realized.

Description

technical field [0001] The invention belongs to the technical field of measuring the height of a mine water-guiding fissure zone, and in particular relates to a method for synchronous leak detection of multi-segment plugging of an overlying rock failure zone. Background technique [0002] The measurement of the height of mine water-conducting fissures is an important parameter to indicate the occurrence state of coal rocks. When studying mine water control, it is a key basic parameter. Therefore, in order to study the formation of water-conducting channels in mining surrounding rocks, it is necessary to grasp the law of rock movement and determine the height measurement of water-conducting fissure zones. The existing technology In the process, numerical simulation, empirical formula prediction, field measurement and other means are usually used for determination. [0003] However, due to the complex site conditions, to a certain extent, the numerical simulation cannot refle...

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Problems solved by technology

[0003] However, due to the complex site conditions, to a certain extent, the numerical simulation cannot reflect the site conditions well, and the blindness of the empirical formula is relatively large. As the mining depth increases, the applicability of the empirical formula is getting worse; and the field The equipment used in the actual measurement can only measure one section at a time, and the measurement length of each section is about 1.5m, while the drilling length is about 30-50m, which causes the measuring equipment to move too many times in the drilling. The measurement can only be completed by repeated movement. Due to the head pressure error caused by the inclination angle of the borehole and the defects of the equipment itself, the measurement section cannot be too long each time. Many times, inaccurate measurement and other problems

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