This paper proposes that Poisson's ratio of rock mass and in-situ stress are directly determined using optimization method according to measured strains obtained from bore hole stress relief process.

本文根据孔壁应力解除法获得的量测应变，提出了采用最优化方法直接确定岩体的泊松比和原始地应力。

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The stress relief method of hole diameter deformation was used to measure the stress distribution of the pillar structure in the mined area in a big phosphate mine.

采用孔径变形应力解除法，测量了某大型磷矿采空区中矿柱结构的应力分布规律；

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The formulae for calculating the absolute stress, using the stress-relief method at the bottom of a hole are discussed.

论述了孔底应力解除的原理、方法与算式，解决了绝对应力量测问题。

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While other attempts are planned to block the hole, it is probable that oil will continue to pour from it for another couple of months, until relief wells are drilled to intersect and reduce the pressure in the currently flowing well and cut-off the leakage of perhaps 50 million barrels of oil contained there by the injection of concrete deep into the seabed.

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