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hydraulic fracturing method
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  水压致裂法
     This paper introduced the results of crustal stress measurement by hydraulic fracturing method within 3 vertical boreholes of a highway tunnel in east China,and the estimation formula of stress in tunnel axis' horizontal plane and the maximum tangential stress in cross section were analyzed and deduced,which was used in the tunnel's shape selection and rockburst possibility judgment.
     通过华东某公路隧洞3个深钻孔的水压致裂法地应力测量结果,分析并推导得到了隧洞轴线水平面上的应力和隧洞轴线横截面内最大切向应力的估算公式,并用于隧洞形状选择及隧洞开挖时岩爆可能性判断。
短句来源
     Study of Simulating Stress Determination Technique by Hydraulic Fracturing Method
     水压致裂法测量地应力模拟方法研究
短句来源
     especially gave rather detailed discussion and assessment to the hydraulic fracturing method and overcoring stress relief method most widely used all over the world nowadays on the basis of study resuits of the author.
     对各种测量方法和测试仪器的工作原理、主要优缺点以及在不同岩层条件下工作的可靠性和适用性作了基本介绍,特别是对目前世界上应用最广泛的水压致裂法和套孔应力解除法,在本人研究成果的基础上,作了比较详细的论述和评价。
短句来源
     Thick-walled cylindrical specimens prepared from three kinds of rocks were tested by hydraulic fracturing method to measure their fracture toughness K_(IC) under different conditions.
     用带孔边裂纹的三种岩石的厚壁筒试件,以水压致裂法测定了不同条件下岩石的断裂韧度K_(IC).
短句来源
     In high seismic area of Jianchuan, the orientation of the maximum horizontal compressive stress is N20°E determined by the borehole breakouts obtained from the ultrasonic borehole televiewer logging data in an 800m deep well, It is very consistent with N15°E of those measured using the hydraulic fracturing method in the same well.
     根据一口800米深钻孔的超声波井下电视测井获得的崩落资料,确定剑川地震活动区最大水平主应力方向为N20°E。 这与近两年来在该区采用水压致裂法测定的最大水平主压应力方向N15°E是十分一致的。
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  水力压裂法
     Determination of Soil Fracture Toughness with Hydraulic Fracturing Method
     水力压裂法测试土的断裂韧度
短句来源
     Discussion on application of hydraulic fracturing method to geostress measurement
     水力压裂法地应力测量中的几个问题
短句来源
     Fracture toughness of clay roadbed was determined by hydraulic fracturing method in this paper. The study shows that the results from this paper are comparable with the results from other methods.
     用水力压裂法测试了路基填土的断裂韧度 ,并将测试结果与其他方法所得结果进行了比较 ,研究表明不同的方法所得结果有较好的可比性
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  “hydraulic fracturing method”译为未确定词的双语例句
     The Statistical Analysis for Tensile Strength of Rock by Laboratory Hydraulic Fracturing Method
     用水力破裂法测得岩石抗拉强度的统计分析
短句来源
     Determination of Rock Salt Fracture Toughnesswith Hydraulic Fracturing Method
     水力压裂测定岩盐的断裂韧度
短句来源
     The theoretical model created based on minimum principal stress criteion is a new thinking of the three dimensional geo stress measurements made by hydraulic fracturing method.
     采用最小主应力破坏准则 ,建立理论模型 ,是利用水压致裂方法进行三维地应力测量的新的研究思路和方法。
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  hydraulic fracturing method
Direct Measurement of Rock Pressure in Mine Conditions by Hydraulic Fracturing Method
      


The mechanism of borhole breakouts, its formation environment and relation with the present-day tectonic stress field are presented in this paper; The logging principle of ultrasonic borehole televiewer, operating techniques and analyzing method of borehole breakout data are also described. In high seismic area of Jianchuan, the orientation of the maximum horizontal compressive stress is N20°E determined by the borehole breakouts obtained from the ultrasonic borehole televiewer logging data in an 800m deep well,...

The mechanism of borhole breakouts, its formation environment and relation with the present-day tectonic stress field are presented in this paper; The logging principle of ultrasonic borehole televiewer, operating techniques and analyzing method of borehole breakout data are also described. In high seismic area of Jianchuan, the orientation of the maximum horizontal compressive stress is N20°E determined by the borehole breakouts obtained from the ultrasonic borehole televiewer logging data in an 800m deep well, It is very consistent with N15°E of those measured using the hydraulic fracturing method in the same well.

本文论述了钻孔崩落的力学机制、产生环境及其与现今构造应力场的关系,介绍了超声波井下电视的测井原理、操作技术和钻孔崩落测井资料分析方法。根据一口800米深钻孔的超声波井下电视测井获得的崩落资料,确定剑川地震活动区最大水平主应力方向为N20°E。这与近两年来在该区采用水压致裂法测定的最大水平主压应力方向N15°E是十分一致的。

Tension resistent strength of rock under confining pressure is examined by experiments of applying hydraulic fracturing method with different confining pressure upon thick-walled cylindrical specimens of seven kinds of rock and by adopting the rules of five parameters like inner wall circular stress at and circular strain gt at the fracture instant of specimen along with the variation of confining pressure. The result shows that when at indicates the tension resistent strength of the rock, the tension...

Tension resistent strength of rock under confining pressure is examined by experiments of applying hydraulic fracturing method with different confining pressure upon thick-walled cylindrical specimens of seven kinds of rock and by adopting the rules of five parameters like inner wall circular stress at and circular strain gt at the fracture instant of specimen along with the variation of confining pressure. The result shows that when at indicates the tension resistent strength of the rock, the tension resistent strength of rock decreases with the increas of confining pressure, and that the tension strain at low confining pressure gradually transits to the pressure strain at high confining pressure. At high confining pressure, it shows typical tensile fracture, even the specimen suffers from three-directional pressure. From another point of view, tension strain could not exist in the rock under high confining pressure, it could only exist under low confining pressure. And when εt indicates the tension resistent strength of the rock, the εt of tensile fracture is always the tension strain, even if the rock sits are in three-directional pressure. It seems rationally to express the tension resistent strength of rock by the strain. At first the  increases with the increase of confining pressure, then it decreases after the confining pressure reaches to a certain specific value.

用水压致裂法对7种岩石的厚壁圆筒试件进行不同围压下的抗拉强度实验,并从试件致裂瞬间的内壁环向应力σt,环向应变εt等五种参数随围压变化的角度,对围压条件下岩石的抗拉强度进行研究。结果表明,若用σt表示岩石的应力抗拉强度,则σt随围压的增加而减少,并由低围压时的拉应力逐渐过渡为高围压时的压应力。高围压时,虽然试件已处于三向受压状态,但其破裂仍表现为典型的张性破裂。从另一意义上讲,处于高围压环境中的岩石,其内部不可能存在拉应力,拉应力只在低围压状态中存在。若岩石的应变抗拉强度由εt表示,即使岩石三向受压,张性破裂的εt始终是拉应变,岩石的抗拉强度由应变来表征似乎更合理。εt先随围压的增大而增大,当围压超过某一特征值后,εt反随围压的增大而有所减少。 将上述结果应用于岩体(或地震)破裂,可以证明,当岩体内存在σ_3<μ(σ_1+σ_2)的应力状态时,即使三向受压,岩体照样会出现张性破裂。由此认为,地震的震源也存在着张性破裂的可能。

Thick-walled cylindrical specimens prepared from three kinds of rocks were tested by hydraulic fracturing method to measure their fracture toughness K_(IC) under different conditions. The results show that pore pressure, precrack depth and loading path all affect the K_(IC) value of rock significantly.

用带孔边裂纹的三种岩石的厚壁筒试件,以水压致裂法测定了不同条件下岩石的断裂韧度K_(IC).结果表明,孔隙压力、预裂纹深度及加载途径等对岩石的K_(IC)有明显的影响。

 
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