Segmental observation system for growth height of top-board water guiding fissure zone

Abstract

The invention discloses a segmental observation system for the growth height of a top-board water guiding fissure zone. The segmental observation system comprises a detection system, a plugging system and a supply determination system, the detection system comprises a test probe, the test probe is formed by connecting detection units successively, the adjacent detection units are detachably connected via a slot joint, each detection unit comprises a water inlet pipe, a water return pipe, a pressure regulator valve and an electronic flow meter, the two ends of the water inlet pipe and the two ends of the water return pipe of the detection unit in the middle/tail portion are clamped on the slot joints respectively, one end of the water inlet pipe and one end of the water return pipe of the detection unit in the front portion is connected to the slot joint, the other end of the water inlet pipe and the end of the water return pipe of the detection unit in the front portion is connected to a U-shaped pipeline, and the water current pressure in each detection unit is kept equivalent. The test probe is provided with multiple units, the pressure regulator value is used to regular the pressure, it is ensured that the pressure of each detection unit is kept equivalent, and bores can be measured synchronously due to existence of the detection units.

Description

technical field [0001] The invention belongs to the technical field of measuring the height of water-conducting fracture zones in mines, and in particular relates to a segmented observation system for the development height of roof water-conducting fracture zones. 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 ...

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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 measurement equipment to move too many times in the drilling

Due to the head pressure error caused by the inclination angle of the borehole and the defects of the equipment itself, the measuring section of the equipment in the prior art cannot be too long each time. At the same time, due to the defects of the equipment itself, there will be a series of problems, such as not being able to measure multiple measuring sections at the same time , heavy measurement workload, many times of movement, inaccurate measurement, etc.

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