原岩應力場
原岩應力場就是岩石、礦山等複雜斷裂構造中的受力部分。
通過對礦區原岩地應力的測量和分析，決定礦區的原岩應力場巨觀類型；然後利用理論分析、地質分析、巷道穩定性工程地質調查、工程地質類比分析的方法進一步論證了這一結論；最後總結出礦區的原岩應力特點，提出了煤礦巷道斷面選擇原則．
原岩應力圖討論
在分析複雜斷裂構造擾動下的礦山區域原位多點實測地應力分布特點的基礎上，通過建立適合礦山工程岩體地質特點的參數式數值分析模型，採用位移不連續法(DDM)及基於有限實測點的逐次逼近相結合的方法模擬工程區域的複雜斷裂構造應力場，可以得到與實測值良好吻合的結果。並通過對數值計算所得的水平面內的次主應力分布特徵的分析，探討了複雜斷裂構造對區域岩體初始應力狀態的影響。研究結果表明：區域原岩應力狀態巨觀上主要受幾何尺寸大的斷層的支配，局部範圍內受複合斷層的疊加擾動影響，造成了原岩應力狀態的各向異性及非均勻分布特徵。
According to the distribution characteristics of initial rock stress measured in the mine around complex faults, structural rock stress field is simulated and estimated by establishing numerical model suited to geological structure of the mine and applying the DDM (displacement discontinuity method) and iteration method based on the stress measurements. Simulating results fit with the distribution characteristics of the measurements. In addition, the influence of complex faults on regional principal rock stresses is analyzed by comparing the in -situ measurements with numerical results. It is shown that regional initial rock stress state is controlled by larger faults and that heterogeneity and aeolotropism of initial rock stress field are caused by superposition of action of faults.
