The Analysis of the Mechanical Properties of Typical Salt Rock

doi:10.11885/j.issn.1674-5086.2015.03.13.02

Abstract

Abstract:

It is studied the short term mechanical properties of samples of bedded salt in Yunying Hubei，Huaian Jiangsu and
Pingdingshan Henan by doing experiments of monopodium and triaxial compression and splitting. It also compares stratums
in different district and different depth of the pure salt rock mechanical properties. The results showed that（1）the rocks in
different area which have the biggest uniaxial compressive strength and modulus of elasticity and the smallest Poisson ratio
belong to mudstone and mud salt rock. It indicated that mudstone has bad deformation properties. The salt rock which has
different impurity will increase its compressive strength and modulus of elasticity，and its Poisson ratio is not sensitive to the
change of impurity. The compressive strength，modulus of elasticity and Poisson ratio of the pure salt rock increases with
increase of the depth of stratum，the rocks from the shallow layer in uniaxial tests have obvious compression phase.（2）the
sample in different regions increases as confining pressure peak intensity increase. The comparison of the internal friction
angle and cohesive value for different sample in different regions can be obtained，and the internal friction angle of the pure
salt rock are greater than those of other values，but the cohesion are smaller than other sample value，reflecting that the crystal
particles of pure salt rock are big，and contain less impurity.（3）the tensile strength of the pure salt rock in different regions
relative to the other samples is minimum.

Key words: salt rock；poisson&prime, s ratio；elastic modulus；tensile strength

CLC Number:

TE122

WANYAN Qiqi1，2，3*, SHEN Xueming4, KOU Yanxia2，3, RAN Lina2，3. The Analysis of the Mechanical Properties of Typical Salt Rock[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2015.03.13.02.

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