煤柱下方底板岩层中应力分布特点有（）。 -题库考试答案搜索网

煤柱下方底板岩层中应力分布特点有（）。

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2021-09-03 16:51

A、在煤住和煤体下方的一侧为增压区
B、在采空区下方的一侧为减压区
C、在煤住或煤体下方的一侧离煤层越远应力越小最后趋向于原岩应力
D、在采空区下方的一侧离采空区越近应力越小在一定的范围内可以小于原岩应力

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正确答案

A@#@B@#@C@#@D

试题解析

标签：联大河南理工大学矿山压力及其控制

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