研究表明，早龄期混凝土致裂应力主要与徐变和内外约束有关。
The results showed that the concrete cracking stress at the early age was associated with the creep and internal and external constraints directly.
在深层地应力测量中， 水压致裂法是最有效的测量方法。
The hydrofracturing technique is the most effective measuring method in the geostress measurement in deep stratum.
阐明了控制致裂岩体应力测试方法的实质和用控制致裂法测试岩体应力的依据。
The substance of rock mass stress measurement by controlled fracturing technique and the basis of using the technique for the observation of rock mass stresses are described.
岩石的水压致裂过程是典型的渗流与应力耦合作用的破坏过程。
Hydraulic fracturing is a typical illustration of coupling between seepage and stress in rock failure process.
初始地应力状态是岩石地下工程设计中的重要参数，而水压致裂法是深部岩体应力测量的理想方法。
The initial stress is one of the most important parameters for the design of underground rock engineering, and hydro-fracturing method is a robust technique for stress measurement in deep rock mass.
应用FLAC3D模拟研究了采动影响下，围岩内应力场的变化特征，不同爆破方式致裂弱化后应力集中区的转移规律。
The stress field in surrounding rock and stress concentration area variation rules under different blasting methods was simulared by use of FLAC3D.
本文根据水压致裂法，对中国大陆的华北、华南、东北和西北等沉积岩地区，进行了四百米至四千米深度范围的绝对应力测量。
Using hydro-fracturing method, absolut stress measurements are made in the depth range of 400-4,000 m for the sedimentary rock areas in northern-, southern-, northeastern- and northwestern China.
从而弥补了以往传统的水压致裂法地应力测量只能测量钻孔横截面上的二维地应力状态的缺陷，扩大了这种测量方法的应用范围。
As the methods have supplied the deficiency of traditional geostress measurement, which can only measure 2d cross-sectional stress of a borehole, its applicable scope is thus widened.
讨论了控制致裂岩体应力测试中应该注意的问题。
Some problems which are worthy of note during rock mass measurement by the technique are discussed.
秦岭特长隧道地区采用水压致裂法进行了深钻孔的应力测量。
The measurements of ground stresses by using the hydraulic cracking method within the deep boreholes were proceeded at the Qinling extra long tunnel district.
为了评价金沙江阿海水电站坝址区地应力的分布特征，进行了水压致裂法测试与分析。
In order to evaluate the characteristics of in-situ stress distribution in Ahai Hydro-power Stations dam site, Jinshajiang River, the hydro-fracturing measurement and analysis are conducted.
运用深钻孔套芯解除法对阳江抽水蓄能电站进行了三维地应力测量，并将测试结果与水压致裂法进行了比较。
The overcoring method in deep borehole is one of the robust 3D geo-stress measuring methods at home and abroad.
首先阐述了初始地应力场的有限元反演分析方法和水压致裂法地应力测量方法给出了对小孤山工程适当的地应力场。
The specific work includes:(1) At the first, the finite element inversion analysis method of the initial crustal stress field and the measuring method of hydrofracturing crustal stress were expounded.
在中国西南某新型引水式水电站工程中使用水压致裂技术开展了原地应力及相关岩体力学参数测试。
The hydraulic fracture technology is employed to estimate the in-situ stresses and other relevant mechanical parameters of rock mass at a new-type diversion hydroelectric project in China.
本文运用水压致裂地应力测量方法，对我国某地下油库预可行性研究工程场区两个钻孔进行了地应力测量。
Hydrofracturing in situ stress measurements were used to determine in situ stress states of two drill holes for the pre-feasibility study of an underground reservoir at an engineering site in China.
本文运用水压致裂地应力测量方法，对我国某地下油库预可行性研究工程场区两个钻孔进行了地应力测量。
Hydrofracturing in situ stress measurements were used to determine in situ stress states of two drill holes for the pre-feasibility study of an underground reservoir at an engineering site in China.
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