中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 5 No. 3 September 1995 |
FRACTURE MECHANICS CONDITIONS OF WALLROCK ALTERATION
Xi Xiaoshuang; He Shaoxun
（Department of Geology; Central South University of Technology; Changsha 410083）
Abstract:According to the characteristics of stress field surrounding cracks and by theoretical analyses of fracture mechanics, it was found that the wallrock alteration is controlled by the microcracks developed at crack-tip. The new mode of alteration development controlled by conditions of fracture mechanics was proved by the facts that the variation in regularities of alteration zones and lode-thickness is determined by the extension-length and driving stress of crack
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