| 水压致裂法测量裂隙岩体的地应力研究 |
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| 引用本文： | 刘文剑,吴湘滨,王东.水压致裂法测量裂隙岩体的地应力研究[J].煤田地质与勘探,2007,35(3):42-46. |
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| 作者姓名： | 刘文剑 吴湘滨 王东 |
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| 作者单位： | 中南大学地学与环境工程学院, 湖南 长沙 410083 |
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| 基金项目： | 交通部西部交通建设科技项目 |
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| 摘 要： | 通过对水压致裂法形成的钻孔印模分析,运用Taylor公式和最小二乘法迭代算法,计算纵向和横向裂隙岩体地应力大小及其误差。首先确定大地、裂隙和钻孔坐标系,根据印模曲线确定裂隙方位;然后用Taylor公式和最小二乘法迭代算法,计算应力分量;最后计算出主应力大小及其误差。将此方法应用于雪峰山隧址区ZK6钻孔的地应力场计算,得出其最大水平应力为13 MPa,方位113°左右,这与地质构造法实测的应力场相吻合,说明这一方法合理可行,具有较好的实用价值。
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| 关 键 词： | 裂隙岩体 水压致裂 应力计算 误差分析 |
| 文章编号： | 1001-1986（2007）03-0042-04 |
| 收稿时间： | 2006-12-06 |
| 修稿时间： | 2006-12-06 |
Study on the geo-stresses measurement of fracture rock-mass with hydro-fracturing of borehole |
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| LIU Wen-jian,WU Xiang-bin,WANG Dong.Study on the geo-stresses measurement of fracture rock-mass with hydro-fracturing of borehole[J].Coal Geology & Exploration,2007,35(3):42-46. |
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| Authors: | LIU Wen-jian WU Xiang-bin WANG Dong |
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| Institution: | School of Geoscience and Environmental Engineering, Central South University, Changsha 410083, China |
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| Abstract: | Based on moulage analysis of bore-hole formed by hydro-fracturing,a method of account and error reliability analysis on longitudinal and transverse fracture rock-mass is proposed with Taylor expressions and iterative least-squares fitting.First,the bore-hole,fracture plane and earth coordinate system are confirmed,and cranny azimuth is confirmed by moulage curve.Then,stress component are calculated with Taylor expressions and iterative least-squaress fitting.Lastly,principle stress and its error are done.According to calculative method and geodesic datum,the maximal horizontal stress(13 MPa,113°or so) at Boreoll ZK6, Xuefeng Moutain,is educed.The result is similar to that of geologic reconnaissance and illuminates that the method is logical and applicable. |
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| Keywords: | fracture rock-mass hydro-fracture stress determination error analysis |
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