求翻译：常规的旋挖钻机穿越上述冲洪积地层的中的卵碎石地层很困难，几乎无法穿越钙质胶结呈砾岩的夹层。因此，经七路以南的冲洪积地层中的桩基设计目前仍在大量采用劳动强度大，作业环境恶劣、安全度低的人工挖孔灌注桩，而且，地下水位高于桩身通常要降水施工。是什么意思？

Conventional rotary drilling rig through the formation of the alluvial gravel strata in the eggs is very difficult, almost impossible to pass through the laminated calcareous conglomerate was cemented. Therefore, the Seven Road to the south of alluvial strata in the pile design is still in extensive

Conventional rotor Rotary rig across the hedge Hongji stratum in the gravel layer of eggs is very difficult, almost impossible to traverse a conglomerate of calcium crystalize laminated. Therefore, the 7 South Road in the brunt of Hongji stratigraphy piling design is still in intensive and large use

The convention turns on lathe digs the drilling machine to pass through above flushes Hong to accumulate the stratum the egg crushed stone stratum to be very difficult, is unable to pass through calcareously nearly cemented assumes the conglomerate the band.Therefore, flushed Hong after seven group

Conventional rotary drilling rig across the above red diluvium of egg formation of gravel stratum is very difficult, almost impossible through the dissection of calcareous cement conglomerate. Therefore, Jingqi road, South of Red diluvium stratum of pile foundation design is still a lot to solve hea

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