Jizhong Energy Group Corporation Limited Jizhong Energy Fengfeng Group Co.Ltd. Xi'an Research lnstitute,China Coal Technology and Engineering Group

为安全开采邯邢矿区深部煤炭资源,提出了"区域超前治理"奥灰岩溶水害理念,开展了华北型煤田大采深高承压水安全开采成套技术研究课题;从理论上研究得出"分带分时段突破"底板突水机理;采用阻水系数法评价试采区底板隔水层承压能力;成功地研究出地面多分支近水平定向钻探关键技术;从岩石力学和水动力学阐述了裂隙含水层中水平孔注浆浆液扩散机理,并给出了孔距计算公式;对于钻遇岩溶或断裂构造状况,研究出了铺底浆液控制技术。地面区域超前治理奥灰水害成套技术在九龙矿成功应用,取得了显著技术经济与环境效果。

in order to safely mine the cal rescuces in the deep depth of Hanxing Mlining Area, an idea on the'regional acvance control of Ordovician limestone water disaser was provided and aresearh program was conduced on the completed tfechrology of safety mining in the seam with the deep depth and high pressurized water in North China coafed.Fron the theoretical stctythe foor water inush mechanism with 'zoning and timing section breaking 'was obtained. A wateresisance coe ficient method was appied to evaluate the pressure bearing capacity of the wate isolated layer in the foo of the rial mining block.The key technology of the muit branch subhorzont l dre ctionald iing exploration on the surface ground was successilly reseached.From rock mechanics and waterdynamics.the paper stated the grout difusion mechanism of the horizontal borehole grouting in the crack aqurer and provided the calculation formulaofthe borehole space .When thedrlling operatiowas in the Karst or broken teactonic conditons a control technology with abottom grout was researched.The advance completed techrology to conrol he Orcdovicanlimestone water disaster in the surace region was sucssilly applied in Julon Mine, which showed obviou fechical and econonic efifet as e the enironment efect.

国家自然科学基金资助项目(41272276；51174289)；