Fractal theory is used to study the fracture of rock mass.

利用分形理论对岩体裂隙进行研究。

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The purpose of Controlled Blasting Engineering is study the directed fracture of rock and the crack expansion.

工程控制爆破 ，要研究岩石的定向断裂的裂纹扩展。

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The mechanism of damage and fracture of rock blasting is composed of blasting mechanism and rock meso-damage theory.

岩石爆破损伤断裂机理是由岩石爆破机理和岩石细观损伤力学理论组成的。

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Instead of looking for underground hot water deposits, they drill and fracture relatively warm rock.

FORBES: DOE's $30 Billion Man Speaks

But XTO, with a smaller capital structure than the supermajors', is happy to invest in the neglected fields, using new techniques of 3-D imaging, horizontal drilling and so-called fracture stimulation--blowing open rock formations by injecting mudlike fluids down wells to get at big methane reservoirs.

FORBES: Oil & Gas Operations

This year he completed what is believed to be the first ever fracture stimulation procedure in Turkey: injecting a mixture of water and sand at high pressure down the wells to break up rock and release gas.

FORBES: Magazine Article