System and method for simulating water inrush from coal mining floor above artesian water aquifers

A technology of confined water and bottom plate, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems that the development of cracks inside the rock formation cannot be directly reflected outside the model, and the lateral invariance of the confined water, etc., to achieve the small diameter of the riser , good effect of pressure resistance

Inactive Publication Date: 2016-05-04
SHANDONG UNIV OF SCI & TECH
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] At present, the floor water inrush simulation of coal seam mining above confined water has the following particularities: 1. The development of internal cracks in the rock formation cannot be directly reflected outside the model; 2. The overall lateral invariance of the confined water

Method used

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  • System and method for simulating water inrush from coal mining floor above artesian water aquifers
  • System and method for simulating water inrush from coal mining floor above artesian water aquifers
  • System and method for simulating water inrush from coal mining floor above artesian water aquifers

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Embodiment 1

[0039] A method for simulating floor water inrush in coal seams above confined water, combining figure 1 Shown, specifically include the following steps:

[0040] Step 1, first carry out the ratio of similar materials, mix and stir different proportions of cement, sand, gypsum, and water according to a certain ratio, and then install the guard plate groove 7 on the bottom plate 2 of the two-dimensional similar simulation test device 1, on the guard plate A row of small holes 6 are drilled on the groove 7, and the guard plate groove 7 mainly cooperates with the U-shaped groove 16, the bearing bolt 4, and the strip plate 5 to bear the gravity and impact force of the upper rock formation during the laying of the model;

[0041] Step 2. Put the U-shaped groove 16 flat on the bottom plate 2, install the capsule body 10 inside the U-shaped groove 16, its main function is to stabilize the flexible water bladder, and connect the riser tube 8 with the capsule body 10;

[0042] Step 3....

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Abstract

The invention discloses a system and a method for simulating water inrush from coal mining floor above artesian water aquifers. The system is composed of a two-dimensional similar simulation experimental device, a loading device, a rising guide device and a data acquisition device, wherein the two-dimensional similar simulation experimental device comprises a test bed; the rising guide device comprises a sac body, a board guard trough, a U-shaped groove and a rising guide pipe positioned on the upper surface of the sac body, the U-shaped groove is disposed on the bottom plate of the test bed, the sac body is fixed in the U-shaped groove, the board guard trough is arranged at two sides of the bottom plate, a plurality of holes are formed on the inner wall of the board guard trough, a plurality of branched pipes are arranged on the rising guide pipe at uniform intervals in a vertical direction, and are disposed at the outer side of a model when the model is laid. The system can monitor the formation process of the water inrush channel of the coal mining floor above artesian water aquifers and the rising guide position of artesian water, thereby having a certain guiding significance on simulation of water inrush from coal mining floor above artesian water aquifers.

Description

technical field [0001] The invention relates to the field of coal mine monitoring equipment, in particular to a system and method for simulating water inrush from a coal seam mining floor above pressurized water. Background technique [0002] Because the coal seam floor water-resisting layer is in an extremely complex geological environment such as high pressure, strong seepage, and multiple structures, there are various factors that induce floor water inrush. Under the influence of coal seam mining, it is very important to monitor and prevent the floor water pressure changes in time to prevent floor water inrush from damage to the goaf. [0003] In the prior art, the similar simulation test system of high water pressure floor water inrush in deep mining and the physical simulation test system of floor water inrush hazard are mainly used to obtain the influence of confined water on each rock layer of the floor during coal seam mining and the pressure change of the confined w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01V9/00
CPCG01N33/00G01V9/00
Inventor 张新国孔贺郭惟嘉张保良王昌祥孔德志江宁李杨杨王海龙李飞庞振忠
Owner SHANDONG UNIV OF SCI & TECH
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