An experimental device and method for rock movement in the exploitation of adjacent confined aquifers
A technique for confined aquifers and experimental devices, which is applied to the testing of measuring devices, instruments, and machine/structural components. The effect of simple structure, high loading accuracy and reasonable design
Active Publication Date: 2018-03-09
ANHUI UNIV OF SCI & TECH
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However, despite the sufficient flexibility of the water sand bag, during the initial pressurization period, the rock stratum has stepped subsidence. When the step subsidence exceeds the deformation range of the water sand bag, the water sand bag cannot fully contact with the rock formation, which will affect the In addition, simulating loose confined aquifers in a closed environment brings certain difficulties to the loading accuracy, observation of aquifer water pressure and deformation
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[0033] Such as figure 1 , figure 2 , image 3 with Figure 4 Shown, a kind of rock stratum movement experiment device of adjacent confined aquifer mining, comprises the simulated frame 1 that simulates coal strata and is embedded in the simulated rock layer 9 of simulated frame 1 top several confined aquifer simulation devices, several The pressurized aquifer simulation device is arranged in sequence along the length direction of the simulation frame 1, and the pressurized aquifer simulation device includes a base 2, a top beam 3, a light hydraulic cylinder 4, two support rods 5, several screws 6, a high pressure Oil pipe 7, hydraulic pump 8, stress sensor 10, data line 11, data collector 12 and handle 13, two support rods 5 are respectively arranged on both sides of light hydraulic cylinder 4 along the width direction of simulation frame 1, light hydraulic cylinder 4 includes Piston rod 41, cylinder barrel 42 and rear flange 43, rear flange 43 is fixedly connected with the ...
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The invention provides a confined aquifer proximity mobile experiment device, comprising a simulation rack with a simulation rock stratum installed inside and a plurality of confined aquifer simulation devices in the simulation stratum which are embedded on the upper part of the simulation stratum rack; the plurality of confined aquifer simulation devices are successively arranged along the length direction of the simulation rack; the confined aquifer simulation device comprises a pedestal, a top beam, a light duty hydraulic oil cylinder, two support rods, a high pressure oil pipe, a hydraulic pump, a stress sensor, a data line and a data collection device; the light-duty hydraulic oil cylinder comprises a piston rod, a cylinder and a rear flange; the stress sensor is arranged on the upper end of the piston; and the stress sensor is connected to a data collector through a data line. The experiment device disclosed by the invention can better reproduce the stress transmission characteristic of the confined aquifer, and is simple in structure, high in confining precision, adjustable in the water pressure, and easy to observe the water pressure of the confined aquifer and the deformation. The invention also provides the usage method for the experiment device.
Description
technical field [0001] The invention belongs to the technical field of similar simulation experiment devices and methods, and in particular relates to a rock layer movement experiment device and method for exploiting adjacent confined aquifers. Background technique [0002] A thick unconsolidated aquifer of about 200-600m is covered above the coal seams mined in the mining areas of East China, North China, and Northeast my country. According to experience, 80m waterproof coal rock pillars are generally reserved in the early stage, and the amount of coal pressed exceeds 10 billion tons. For example, in the Panji Xieqiao mining area in Huainan, Anhui, the Quaternary loose layer in the area is 169-437m thick, which is a very thick loose and strong aquifer. Therefore, 80m waterproof coal rock pillars are left in the design of each mine, and the waterproof coal pillar reserves reach 600 million tons. Due to the small inclination angle of the coal seam, a large amount of coal res...
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IPC IPC(8): G01M99/00
CPCG01M99/00
Inventor 李志华华心祝杨科张山松沈永亮
Owner ANHUI UNIV OF SCI & TECH