Overlying strata hydraulics and rock mechanics monitoring method and system

A technology of rock mechanics and hydraulics, which is applied in the field of overlying rock hydraulics and rock mechanics monitoring, can solve problems such as high cost and unrealizable overlying rock dynamics, and achieve cost-saving effects

Pending Publication Date: 2021-07-23
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Problems solved by technology

On the other hand, conventional hydrogeological tests and rock mechanics tests are often expensive, and continuous monitoring is almost impossible, which also makes real-time monitoring of overburden dynamics caused by mining impossible

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  • Overlying strata hydraulics and rock mechanics monitoring method and system
  • Overlying strata hydraulics and rock mechanics monitoring method and system
  • Overlying strata hydraulics and rock mechanics monitoring method and system

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Embodiment Construction

[0036] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

[0037] In order to obtain the real-time damage to the overlying strata during the coal mining process, this method proposes to use the hydrogeological monitoring holes in the mining area to observe the water level and air pressure to obtain the dynamic changes of the hydraulic and rock mechanics parameters of the aquifer in real time, so as to identify the mining process. Real-time impact on overburden. The key points of this scheme are the wellbore layout scheme; the method of inversion of aquifer permeability coefficient and water storage rate in combination with water level and solid tide; the method of inversion of rock mechanics parameters such as compressibility and porosit...

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Abstract

The invention provides an overlying strata hydraulics and rock mechanics monitoring method and system. The method comprises the following steps: water level data and air pressure data are detected through an automatic water level gauge and an air pressure gauge arranged in a hydrological monitoring hole in a mining area range; according to the solid tide effect and the air pressure effect of the well water level, corresponding inversion calculation models are selected under different conditions, and hydrogeological parameters of different coal seam overlying aquifers are calculated; distribution characteristics of three zones (a bending zone, a fault zone and a caving zone) can be visually and comprehensively known by obtaining hydrogeological parameters of coal seam overlying aquifers at different positions, and a new basis is provided for division of the three zones; and by acquiring space and time change characteristics of the hydrogeological parameters, time and space change rules of the hydrogeological parameters of the coal seam overlying aquifers in the coal mining process are monitored. According to the overlying strata hydraulics and rock mechanics monitoring method and system, the real-time influence of the mining process on the overlying strata can be identified.

Description

technical field [0001] The invention relates to the technical field of hydrogeological exploration, in particular to a method and system for monitoring the hydraulic and rock mechanics of overlying rocks. Background technique [0002] With the development of the economy and society, the continuous growth of the population and the accelerated pace of urban industrialization, the human demand for energy has also increased exponentially, so coal will continue to be developed and utilized as a traditional energy source. However, the goaf caused by coal seam mining will cause the overlying strata to rupture, which will inevitably affect the structure and properties of the overlying aquifer, causing a series of ecological and environmental problems such as groundwater leakage, water quality deterioration, ground subsidence, and ground fissures. Therefore, it is of great significance to understand the dynamic changes of the mechanical damage caused to the overlying strata during th...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B47/00G06F30/20E21C41/18
CPCE21B49/00E21B47/00G06F30/20E21C41/18
Inventor 史浙明屈伸许庆宇王广才韩嘉谦
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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