CAJ | 학술논문

为满足含水层下安全采煤以及对于保水开采的要求，需要实测导水裂缝带及冒落带的高度，留设合理的防水煤岩柱，解放水下压煤。在金庄煤矿8201工作面推进60 d后施工2个钻孔漏失液观测孔，采取经验类比法及数值模拟与实测数据进行比较，测得导水裂缝带高度为70 m，冒落带高度为33 m。规程公式对于该矿结果偏小，而统一公式偏大误差为57%。根据不同采煤方法对“两带”发育高度的影响，设计开采方案及计算防水防砂煤岩柱的合理留设尺寸。
위만족함수층하안전채매이급대우보수개채적요구，수요실측도수렬봉대급모락대적고도，류설합리적방수매암주，해방수하압매。재금장매광8201공작면추진60 d후시공2개찬공루실액관측공，채취경험류비법급수치모의여실측수거진행비교，측득도수렬봉대고도위70 m，모락대고도위33 m。규정공식대우해광결과편소，이통일공식편대오차위57%。근거불동채매방법대“량대”발육고도적영향，설계개채방안급계산방수방사매암주적합리류설척촌。
In order to meet safety standards for coal mining under aquifer and requirements of water-preserved-mining, measurements for the heights of water flowing fractured zone and caving zone were needed, and reasonable waterproof coal pillar should also be put to liberate coal pressure underwater. After two months’face advance in 8201 of Jinzhuang coal mine, two drillings were constructed to obeserve fluid leakage. Experience analogy and numerical simulation were compared with experimental data to obtain the actual height of “two zones” under the conditon of overburden rock. The heights of water flowing fractured zone is 70 m, and caving zone is 33 m. The results of practice formula is small, but emprical formula is 57% larger than truth.Depending on the influence of different mining methods on the height of “two zones”, proper mining method was designed and the width of pillar for water-proof and sand-proof were calculated.