Stress distribution of the floor rock mass and the range of disturbance in floor rock affected by mining are discussed.

本文还探讨了底板岩层的应力分布和开采造成的底板岩层扰动范围。

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Based on the result, the paper proposes that the floor rock bolt system may be regarded as a good preventive measure of the floor heave.

在此基础上进而提出了采用底板锚杆系统可以有效地防治该矿巷道底鼓的新见解。

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The ocean floor rock, basalt, along with the sediment that built up on top of it, was drawn down at the edge of an ocean as part of the conveyor-belt mechanism that moves the continents.

海洋板块的岩石，玄武岩，以及覆盖其表面的沉积物被拉沉到海洋底部，充当移动大陆的传送带机制的一部分。

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They lift their eyes to the tall rock walls that rise hundreds of meters up from the floor of the valley.

VOA: special.2010.07.05

Mister Wegener said the lighter continental rock floated up through the heavier basalt rock of the ocean floor.

VOA: special.2010.01.12

Also,the continents and the ocean floor are not made of the same kind of rock.

VOA: special.2010.01.12

The walls were stone and the floor was rock.

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He described mining hydrothermal vents as "more invasive" because it would involve breaking up the uppermost metre of the sea floor and piping the rock fragments to the surface.

BBC: UK Seabed Resources joins deep-ocean mineral-mining rush

All of the ground floor rooms and villas feature an outdoor lava rock shower located just around the corner from the indoor bathroom. (Second-floor rooms have bigger lanais and better views of the secluded Kona-Kohala coast, since they are higher up.) Move from the bathroom to the slate stepping-stones on your private lanai for a blissful outdoor rain shower.

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