CAJ | 학술논문

针对肥城煤田不能够采用疏水降压的方法实现受奥灰突水威胁煤层安全开采的情况，开展了奥灰顶部注浆加固可行性试验研究。通过大量的钻孔资料统计、井下奥灰孔钻探工程、奥灰岩样X-衍射、显微镜下鉴定，获得了肥城煤田奥灰顶部岩溶裂隙宏观和微观发育特征，得出了肥城煤田奥灰顶部注浆改造的最佳深度是进入奥灰20 m的结论。以肥城曹庄煤矿101002工作面为试验对象，对该工作面奥灰顶部进行了注浆加固工程，通过注浆前后的物探及钻探勘查成果对比分析，验证了该结论的正确性。生产实践证明，通过注浆加固奥灰顶部岩层，能够实现高承压水体上煤层的安全开采。
침대비성매전불능구채용소수강압적방법실현수오회돌수위협매층안전개채적정황，개전료오회정부주장가고가행성시험연구。통과대량적찬공자료통계、정하오회공찬탐공정、오회암양X-연사、현미경하감정，획득료비성매전오회정부암용렬극굉관화미관발육특정，득출료비성매전오회정부주장개조적최가심도시진입오회20 m적결론。이비성조장매광101002공작면위시험대상，대해공작면오회정부진행료주장가고공정，통과주장전후적물탐급찬탐감사성과대비분석，험증료해결론적정학성。생산실천증명，통과주장가고오회정부암층，능구실현고승압수체상매층적안전개채。
In view that drainage for decreasing water pressure was useless to guarantee safe mining threatened by water inrush from Ordovician limestone in Feicheng coalfield, the feasibility study of grouting reinforcement of Ordovician top was carried out.Based on the statistics of exploratory boring data, coal mine drilling construction, X-ray diffraction of limestone samples, and microscopic thin sec-tion analysis, the macro and micro characteristics of Karst fissure in the Ordovician top of Feicheng coalfield were obtained.The result shows that the optimal depth for grouting reconstruction in Feicheng coalfield is about 20 meters below Ordovician top.Taking LW101002 in Caozhuang coal mine as test object, the grouting reinforcement project for Ordovician top was carried out.The conclusion validity is proved by the comparison of geophysical exploration and drilling before and after grouting.Practice proves that safety mining on the aquifer with high-pressure can be achieved by grouting reinforcement of Ordovician top.