Test coarse fracture condudtiviy experimental provision and test evaluation method

The present invention relates to test coarse fracture condudtiviy experimental provision and test evaluation method, test rock sample is placed in the diversion cavity room of the coarse fracture condudtiviy experimental provision of test therein, test rock sample is cut to man-made fracture with fractal characteristic, that surface roughness is certain, water conservancy diversion chamber top installation loading top plate, water conservancy diversion chamber lower portion installs slit width measurement apparatus and displacement transducer, floor installation has the platform with roller groups, on water conservancy diversion chamber firm banking, load top plate pressurization, base supports, the loading of common complete pairwise testing rock sample burden pressure；The both sides of diversion chamber set feed liquor loading blocks and go out liquid loading blocks；Clossing pressure loading blocks and clossing pressure adjusting means are arranged on water conservancy diversion chamber rear and front end, and water conservancy diversion chamber is provided with deflecting loading blocks, and clossing pressure loading blocks, clossing pressure adjusting means, deflecting loading blocks coordinate the loading for completing fracture closure pressure.The present invention realizes the quantitative assessment and analysis that crack wall roughness influences on flow conductivity.