Estimation of in-situ hydraulic diffusivity of rock masses

1985 ◽  
Vol 122 (2-4) ◽  
pp. 545-559 ◽  
Author(s):  
Victor C. Li
Keyword(s):  
Rock Masses ◽  
Hydraulic Diffusivity

Development of a Highly Portable Plate Loading Device and In Situ Modulus Measurements in Weak Rock Masses

2015 ◽  
Vol 49 (2) ◽  
pp. 443-454 ◽  
Author(s):  
Raj R. Kallu ◽  
Evan R. Keffeler ◽  
Robert J. Watters ◽  
Sean N. Warren
Keyword(s):  
Weak Rock ◽  
Rock Masses ◽  
Loading Device ◽  
Weak Rock Masses ◽  
Plate Loading

Development of new models for the estimation of deformation moduli in rock masses based on in situ measurements

2017 ◽  
Vol 77 (3) ◽  
pp. 1191-1202 ◽  
Author(s):  
Slobodan Radovanović ◽  
Vesna Ranković ◽  
Vladimir Anđelković ◽  
Dejan Divac ◽  
Nikola Milivojević
Keyword(s):  
In Situ Measurements ◽  
Rock Masses ◽  
New Models

Research on Combined Tests to Entry Disturbed Zone (EDZ) of Rock Masses in Steep Coal Seams

2013 ◽  
Vol 718-720 ◽  
pp. 842-847
Author(s):  
Peng Fei Shan ◽  
Xing Ping Lai ◽  
Jian Tao Cao ◽  
Lin Yao Li
Keyword(s):  
Rock Mass ◽  
Ground Penetrating Radar ◽  
Rock Masses ◽  
East Side ◽  
Coal Seams ◽  
Disturbed Zone ◽  
Explosive Wave ◽  
High Production ◽  
Ground Penetrating

For high production of raw coal in steep coal seams, it is crucial to obtain engineer demands by enhancing section height in horizontal caving. However in-situ operations copious methods like pre-blasting was always needed to broken top-coal which was difficult to excavate commodiously and safely. Explosive wave caused by pre-blasting would destroy stress balance around entries, and definitely result in entry disturbed zone (EDZ) being loosen zone. Aimed to determine boundary of EDZ and keep rock mass in both entries steady, combined tests to EDZ of rock masses of head entry of +600 east-side stope of 43# coal seam was done in Wudong Colliery as research background with ground penetrating radar (GPR) and mono-hole ultrasonic wave experiment. It indicated that scope of EDZ here was 2.2-2.3m, which would be prerequisite to optimize supporting scheme in field.

Field evaluation of permeability of concrete linings and rock masses around underground lined rock caverns by a novel in-situ measurement system

2012 ◽  
Vol 137-138 ◽  
pp. 97-106 ◽  
Author(s):  
Hyung-Mok Kim ◽  
Yanick Lettry ◽  
Dohyun Park ◽  
Dong-Woo Ryu ◽  
Byung-Hee Choi ◽  
...  
Keyword(s):  
Measurement System ◽  
Field Evaluation ◽  
In Situ Measurement ◽  
Rock Masses
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