CAJ | 학술논문

针对松散承压含水层下采煤压架突水灾害问题，采用数值模拟和相似材料模拟手段，就松散承压含水层下采煤基岩厚度、硬岩层层位及硬岩层的不同组合特征等覆岩结构因素对压架突水灾害的影响进行了研究。结果表明：在松散承压含水层载荷传递作用较大的情况下，压架突水灾害的发生主要与覆岩结构有关，当基岩越薄、距离煤层10倍采高以内的顶板中存在巨厚硬岩层且距离煤层最近的硬岩层厚度越大时，覆岩越易发生整体破断，引发工作面压架突水灾害。上述影响规律得到了祁东煤矿7114和7112工作面开采实践的验证。根据压架突水灾害发生的覆岩结构条件，可以在采前对压架突水危险区域进行预测，从而为采场压架突水灾害的防治提供依据。
침대송산승압함수층하채매압가돌수재해문제，채용수치모의화상사재료모의수단，취송산승압함수층하채매기암후도、경암층층위급경암층적불동조합특정등복암결구인소대압가돌수재해적영향진행료연구。결과표명：재송산승압함수층재하전체작용교대적정황하，압가돌수재해적발생주요여복암결구유관，당기암월박、거리매층10배채고이내적정판중존재거후경암층차거리매층최근적경암층후도월대시，복암월역발생정체파단，인발공작면압가돌수재해。상술영향규률득도료기동매광7114화7112공작면개채실천적험증。근거압가돌수재해발생적복암결구조건，가이재채전대압가돌수위험구역진행예측，종이위채장압가돌수재해적방치제공의거。
In this paper, in view of the support crushing and water inrush disaster when mining under unconsolidated confined aquifer, numerical and physical simulations were used to study the influence of overburden thickness, key stratum location and structural combination characteristics, etc., on support crushing and water inrush disaster. The results show that under the remarkable load transfer faction of un-consolidated confined aquifer, support crushing and water inrush disaster is mainly related to the overbur-den structure. The thinner the thickness of bedrock is, and the thicker the first key stratum above coal seam is, the more easily the integral breakage of overburden occurs if the super-thick stratum exits within 10 times mining height distance above coal seam, which may easily induce support crushing and water in-rush disaster in coal face. Above has been validated at No.7114 and No.7112 working faces in Qidong Coal Mine. Based on the overburden structure, the dangerous area of support crushing and water inrush can be predicted before coal mining, which may provide a basis for such disaster prevention.