In light of the results calculated by maximum hole spacing in freezing horizon, The freezing wall should be enclosed, however, hydrological hole don t leak.
But when according to the site conditions determined to crack a drilling section with oblique relations, hole spacing can enlarge exploration.
但当根据现场条件确定的鉆探剖面与地裂缝呈斜交关系时,勘探孔间距可以适当放大。
According to deep hole blasting practice, the wide hole spacing small burden technology is studied because the technology can improve quality of blasting.
根据深孔爆破工程实践,对宽孔距小抵抗线爆破技术进行了研究,该技术可改善爆破质量。
After the test road, summarizes the slab grouting technique for composite pavement, determines the grouting pressure, hole arrangement, hole spacing and other key indexes.