Three-dimensional similarity test device and test method for mining of inclined coal seam with adjustable confined aquifer inclination angle

A technology for similar testing of confined aquifers, applied in the field of three-dimensional similar testing devices for mining inclined coal seams, can solve problems such as small bearing capacity of cemented and easily soluble blocks, inability to quantitatively control, and inability to simulate segmental excavation of coal seams
CN112269015APending Publication Date: 2021-01-26ANHUI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI UNIV OF SCI & TECH
Publication Date
2021-01-26

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Abstract

The invention discloses a three-dimensional similarity test device and test method for mining of an inclined coal seam with an adjustable confined aquifer inclination angle, and relates to the field of confined water inclined coal seam mining similarity tests. The three-dimensional similarity test device comprises a test support, an internal frame, a model storage cavity, a loading plate, a horizontal loading system, a vertical loading system, a water pressure loading system, an inclination angle adjusting system, a signal acquisition and processing system, a three-dimensional test model and acoal seam mining simulation system. The test device realizes the adjustability of the inclination angle of the confined aquifer, the gradient distribution of the water pressure load of the aquifer and the authenticity of the stress state of the inclined coal seam in the vertical direction and the horizontal direction, and realizes the segmental and step-by-step excavation simulation of the coal seam in the closed space of the three-dimensional similar model; and the test device can truly invert generation, expansion and penetration of rock stratum fractures of the mining floor of the inclinedcoal seam on the confined water to finally form a dynamic evolution process of a water guide channel, and can better carry out prediction research on water inrush of the mining floor of the inclinedcoal seam with different inclination angles on the confined water in the strike of long-wall mining.
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Description

technical field

[0001] The invention relates to a simulation device for a similar test of coal seam mining, in particular to a three-dimensional similar test device and a test method for mining an inclined coal seam with an adjustable inclination angle of a confined aquifer. Background technique

[0002] Floor water inrush is the main form of coal mine water damage in my country, especially in North China type coal fields, mine water damage caused by floor water inrush is common and prominent. With the increase of coal mine mining depth and mining intensity, the water pressure and ground pressure on the floor of the mining face are increasing, and the geological structure environment is becoming more and more complex, which makes the problem of water inrush on the floor more serious. Effectively curbing the occurrence of floor water damage has become a hot issue and technical problem faced by many mines in North China coalfields.

[0003] The occurrence conditions of coal s...

Claims

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