【摘要】 杨村煤矿T301工作面的基岩柱厚度仅有11.74～20.17m,其上冲积层为弱含水层。在这样的地质条件下进行开采、防砂岩柱高度是否安全,须经过科学论证,并要有相应的安全技术措施保证,才能实现高效、安全生产。更多还原

【Abstract】 The mining of the face T301 at Yangcun Coal Mine is made under a basement rock layer of only 11.74～20.17 m and above which is a thick loose water—bearing layer. Under such a mining condition, the safety height of the sand barrier pillar needs to be verified through scientific demonstration for ensuring the high-efficiency and safety coal mining operation. Furthermore, corresponding safety technical measures should be provided in this case.更多还原