STUDY OF ENERGY TRANSFER ON PENDULUM-TYPE WAVES PROPAGATION IN BLOCK-ROCK MASS

2017 ◽  
pp. 255-257
Author(s):  
Kaixing WANG ◽  
Yishan PAN ◽  
Linming DOU
Keyword(s):  
Energy Transfer ◽  
Rock Mass ◽  
Waves Propagation ◽  
Block Rock Mass

Gas filtration in a cracked block rock mass: Parameters for placing underground boreholes

1991 ◽  
Vol 27 (4) ◽  
pp. 363-367
Author(s):  
V. Yu. Veksler ◽  
Yu. S. Gurevich ◽  
A. G. Egorov
Keyword(s):  
Rock Mass ◽  
Gas Filtration ◽  
Block Rock Mass

Mechanism of Pendulum-type wave phenomenon in deep block rock mass

2009 ◽  
Vol 19 (6) ◽  
pp. 699-708
Author(s):  
Hao WU ◽  
Qin FANG ◽  
Ya-dong ZHANG ◽  
Jin-chun LIU ◽  
Zi-ming GONG
Keyword(s):  
Rock Mass ◽  
Wave Phenomenon ◽  
Type Wave ◽  
Block Rock Mass

On attenuation of pendulum-type waves in a block rock mass

2006 ◽  
Vol 42 (5) ◽  
pp. 468-475 ◽  
Author(s):  
N. I. Aleksandrova ◽  
A. G. Chernikov ◽  
E. N. Sher
Keyword(s):  
Rock Mass ◽  
Block Rock Mass

Mechanism of anomalous low friction phenomenon in deep block rock mass

2009 ◽  
Vol 19 (4) ◽  
pp. 409-419 ◽  
Author(s):  
Hao WU ◽  
Qin FANG ◽  
Ya-dong ZHANG ◽  
Yu-sheng LU ◽  
Jin-chun LIU
Keyword(s):  
Rock Mass ◽  
Low Friction ◽  
Block Rock Mass

Research on Breaking Energy Mechanism of Tunnel Boring Machine Disc Cutter Rock with CSM Model

2014 ◽  
Vol 651-653 ◽  
pp. 988-991 ◽  
Author(s):  
Nan Zhao ◽  
Li Wei Song
Keyword(s):  
Energy Efficiency ◽  
Energy Transfer ◽  
Rock Mass ◽  
Tunnel Boring Machine ◽  
Rock Breaking ◽  
Energy Output ◽  
Disc Cutter ◽  
Efficiency Ratio ◽  
Tunnel Boring ◽  
Cutter Spacing

Full face rock tunnel boring machine in construction process, disc cutter put pressure on rock breaking, actually belongs to the process of energy transfer, from the point of view of energy analysis the energy transfer rules in the process of disc cutter rock breaking, based on CSM force prediction model, analysis disc cutter energy input and rock mass energy output efficiency ratio, for excavation with minimum energy efficiency. Taking S-536 Hong Kong water tunnel TBM as an example, When the penetration is 10mm, based on the energy efficiency ratio the optimal disc cutter spacing should be less than 70mm, than the actual average disc cutter spacing is small 2mm, rock mass as a reference the disc cutter rock breaking efficiency mechanism provides certain reference value for the cutter layout.

scholarly journals Study of the frequency response of the block–rock mass with bimodulus characteristics

2020 ◽  
Vol 570 ◽  
pp. 052006
Author(s):  
Kuan Jiang ◽  
Cheng-zhi Qi ◽  
Shou-dong Zhu ◽  
Tian-wei Jin
Keyword(s):  
Rock Mass ◽  
Frequency Response ◽  
Block Rock Mass

A quantitative approach to inner shell losses

1978 ◽  
Vol 36 (1) ◽  
pp. 526-527 ◽  
Author(s):  
R.D. Leapman ◽  
P. Rez ◽  
D.F. Mayers
Keyword(s):  
Energy Transfer ◽  
Cross Section ◽  
Cross Sections ◽  
Accurate Determination ◽  
Background Intensity ◽  
Core Excitation ◽  
Quantitative Basis ◽  
Cross Section Differential ◽  
Bound Electrons

Microanalysis by EELS has been developing rapidly and though the general form of the spectrum is now understood there is a need to put the technique on a more quantitative basis (1,2). Certain aspects important for microanalysis include: (i) accurate determination of the partial cross sections, σx(α,ΔE) for core excitation when scattering lies inside collection angle a and energy range ΔE above the edge, (ii) behavior of the background intensity due to excitation of less strongly bound electrons, necessary for extrapolation beneath the signal of interest, (iii) departures from the simple hydrogenic K-edge seen in L and M losses, effecting σx and complicating microanalysis. Such problems might be approached empirically but here we describe how computation can elucidate the spectrum shape.The inelastic cross section differential with respect to energy transfer E and momentum transfer q for electrons of energy E0 and velocity v can be written as

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