Gold occurs mainly in shape of interparticle gold, fissure gold or inclusion gold are taken the second place. The largest gold grain size is 0.58 mm×0.96 mm×0.22 mm, gold grade are 8×10~(-6)～10×10~(-6).
Based on characteristics of water and its blasting effect, the optimal coefficient of ultimate non-coincidence is found to be 4. 4. Extent of the fragmentation zone and crack zone are 1. 01～1. 84 times and 3. 6～14. 5 times of the radius of blast hole respectively.
In this research, conclusions had been summarized as followings:(1)30 % H_2O_2 and 30 % H_2O_2/Fe~(2+) accelerating system made a different degradation cases for Nafion membrane. The former made a degradation state in the similarity form of layer falling off, and the latter a crack form.
The ore veins originated from tension cracks formed and developed from microcrack, and finally become vein system. Super large ore deposits are at the edge of chaos, the fractal dimensions of their crack system are at the self organized critical fractal state(5～125km, D ≈1 5;0 5～20km, D ≈1 3;1～100cm, D ≈1 5;0 0036～0 18cm, D =1 28～1 39).
By investigating the corresponding sufacc in Malan mine and excavate nearby local mine,analysing the water sample and hydrogeology,reaches a conclusion that the source of water is excavator accumulated water of Malan unite mine,and the spoutwater passage is karst crack of K2 ,L4 nearby FM4 1fault.
On the basis of Hudson model and the application of single scattering theory,this paper studied the elastic properties in the EDA,PTL,ORA,EDA+EDA media, established the formula of elastic parameters and analyzed the internal relation between fractured media and anisotropy.
Regard this as the starting point,this paper deduces the random error formula of the filling and opening fractured rock mass by using the transmission law of the error and calculates the error combined with the actual project.
The velocity, density and especially the anisotropic parameter which is important to the study of fractured formation can be achieved by the generalized linear inversion based on the AVA inversion equations.
The relationship between medial crack length and normal loading was also investigated when specimens were indented by symmetrical wedges with interior angles of 30°-120°.
Crack fault quantitative diagnosis based on finite element of B-spline wavelet on the interval
The model-based forward and inverse problems in the diagnosis of structural crack faults were studied.
The forward problem is to solve the natural frequencies through a cracked structural model and the inverse problem is to quantitatively determine the crack parameters using the experimental testing frequencies.
Then, the one-dimensional crack element of B-spline wavelet on the interval (BSWI) was built to solve the forward problem.
With the advancement of the abrasive, the silicon lattice under the abrasive surface is fractured, and then the amorphous layers are formed and propagated, which causes the subsurface damage.
Filtration of two miscible liquids in a fractured porous medium in a gravity field
The article discusses the one-dimensional problem of the displacement of a liquid (petroleum), saturating a fractured porous medium, by another liquid miscible with it in all ratios, in a gravity field.
Unsteady-state filtration of a liquid to a rectilinear gallery in a two-layer fractured porous stratum
Anisotropy of the filtration properties of a fractured medium