Coalbody Structure And Transfusion Characteristic Nuclear Magnetic Resonance Imagery Experimental Study

The coal bed is mad (popular name gas) is the tax saves in the coal bed may replace and surpass the natural gas the precious mineral resource. In the world scope, its ultimate reserves surpasses the natural gas, the development potential is huge. However, under our country complex geology condition, the coal bed is mad cannot form industry mining the main goal is to the coal body internal structure characteristic and the coal bed is mad (water) moves the mechanism in the coal bed average insufficiently is also clear, the coal bed is mad concentrates the high production rule understanding insufficiently is also thorough. Therefore, to the coal body structure and the water -is mad conducts the research in the coal in vivo transfusion characteristic, had the vital significance, the nuclear magnetic resonance imagery technology enable this mentality to have the feasibility. This article in predecessor's foundation, through the experiment to the coal body structure characteristic, the coal bed is mad the tax saves the migration rule and the water -is mad in the coal body aspect and so on transfusion process conducted the research. First, in view of the large-scale nuclear magnetic resonance meter opposition to equipment should guarantee absolutely does not have the magnetism the request, simultaneously for simulates the test sample in the stress condition which underground locates, developed may exert the axis to the test sample presses, encircles presses and the hole presses from presses the type non-magnetism three-dimensional stress seeps the meter; Next, through to the vacuum water saturated coal test sample nuclear magnetic resonance picture research, the direct observation coal body structure characteristic, and does not simulate software through the value the graph processing module analysis coal body interior host crevasse distributed situation, and presses through the change axis, encircles presses and so on the condition discovers, the coal body crevasse presses along with the axis, encircles presses increases reduces, influence which is pressed the hole; Through encircles the pressure, the axis pressure, the hole by the gradient form change presses with parameter the and so on degree of saturation conventional experiment, obtains the coal bed is mad the adsorption-desorption quantity presses the increase along with the axis which, encircles presses reduces, presses along with the hole the increase increases; Through enters the running water to the coal test sample -is mad two transfusions the nuclear magnetic resonance experiments, obtain the water the transfusion process which prompts forward in the coal body. This article carries on the coal body nuclear magnetic resonance imagery experimental study, up to now not sees the correlation report, the experimental study causes the coal body bedding structure and the water -is mad the transfusion process realized visibly. In order to clarify the coal body internal structure characteristic and the coal bed is mad (water) moved the mechanism in the coal bed average establishes the foundation. In order to carry on the coal bed is mad the development, mining stepped out to front to be important one step.