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   损伤裂隙 在 矿业工程 分类中 的翻译结果: 查询用时:0.064秒
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The rheology experiment, maceral and microfracture image analysis of coal blocks are made, and the reological property of coal rock is presented. The effect law of coal maceral, its quantity and ratio of fracture area on coal block′s strength are explored.

以煤试块流变试验及其显微煤岩组分与微观损伤的图象分析测试为例,介绍了煤岩作为一种复杂的特殊力学材料的流变特性;初步探讨了显微煤岩组分及其含量、煤岩内部微观损伤裂隙含量(裂面面积率)对煤岩强度的影响规律。煤的流变系数低于岩石材料,且煤的单轴抗压强度与煤的显微组分含量和微观损伤密切相关。

Detecing the changes of resistivity in deep holes of fissure rock before and after micro explosive blasting to the limestone in Luyuan Mountain Villa with electrical CT image,a certain range,number and width fissures could develop in deep blasting holes after micro explosive blasting,and areas which were caused by fissures mainly located at about 2/3 depth of the bottom of the blasting holes.when the depth of blasting hole is 3 m,and the explosive weighted 330g,fissures developed easily at the depth of 1.5-2.5...

Detecing the changes of resistivity in deep holes of fissure rock before and after micro explosive blasting to the limestone in Luyuan Mountain Villa with electrical CT image,a certain range,number and width fissures could develop in deep blasting holes after micro explosive blasting,and areas which were caused by fissures mainly located at about 2/3 depth of the bottom of the blasting holes.when the depth of blasting hole is 3 m,and the explosive weighted 330g,fissures developed easily at the depth of 1.5-2.5 m of the blasting hole.when the distance between the blasting holes is 1.2-1.5 m,penetration fissures could form in the internal rock,providing scientific basis for blasting engineering design and construction.

通过电法CT成像技术,探测微量炸药爆炸前后裂隙岩体深孔之间电阻率的变化,查明探测切面内的岩体损伤裂隙发育形态和空间展布。通过实验可知:微量炸药爆炸后在裂隙岩体的炮孔深部可以形成一定范围、一定数量和一定宽度的裂隙,其中裂隙形成的区域主要集中在炮孔口深的2/3处,当炮孔深度3 m,装药量为330 g时,在眼深1.5~2.5 m处裂隙较为发育,炮孔间距为1.2 m~1.5 m时,可在岩体内部形成贯通裂隙。

 
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