李建林, 赵帅鹏, 崔延华.煤层气开采后成庄矿15号煤层底板突水危险性评价[J].河南理工大学学报（自然科学版）,2021,40(5):1-7.

LI J L, ZHAO S P, CUI Y H. Water inrush risk assessment of No.15 coal floor after CBM development in Chengzhuang coal mine [J].Journal of Henan Polytechnic University(Natural Science) ,2021,40(5):1-7.

煤层气开采后成庄矿15号煤层底板突水危险性评价

李建林1,2, 赵帅鹏1, 崔延华3

1.河南理工大学 资源环境学院，河南 焦作 454000;2.煤炭安全生产与清洁高效利用省部共建协同创新中心，河南 焦作 454000;3.广西大藤峡水利枢纽开发有限责任公司，广西 南宁 530000

摘要:研究煤层气开采后煤层底板突水机制及危险性评价，对于煤炭安全开采具有重要的理论和实际意义。从岩石力学和地质力学两方面对煤层气开采后煤层底板突水进行理论分析，并以山西晋煤集团成庄矿15号煤层底板奥陶系含水层为例，建立突水危险性评价模型。结果表明：煤层气开采后，若煤层底板与奥陶系含水层导通，煤层底板突水的主控因素按权重从大到小依次为底板最小主应力、底板含水层水压、有效隔水层厚度、地质构造；若煤层底板与奥陶系含水层未导通，底板突水控制因素按权重从大到小依次为底板含水层水压、有效隔水层厚度、 含水层富水性、地质构造、岩石破裂压力和底板最小主应力；采用层次分析法确定主控因素权重，利用分形-脆弱性指数法进行突水危险性分区，即研究区西部脆弱性较强，中北部为过渡区，东南大部为安全区。该评价模型可为煤层气开采后煤层底板突水危险性评价提供参考。

关键词:底板突水;危险性评价;分形-脆弱性指数法;成庄矿;煤层气开采

doi:10.16186/j.cnki.1673-9787.2019110014

基金项目:国家自然科学基金资助项目（41672240，41573095）；河南省自然科学基金资助项目（182300410155）；河南省高等学校重点科研项目（16A170010）；河南省高校科技创新团队支持计划项目（15IRTSTHN027）

收稿日期:2019/11/05

修回日期:2020/06/09

出版日期:2021/09/15

Water inrush risk assessment of No.15 coal floor after CBM development in Chengzhuang coal mine

LIJianlin 1,2, ZHAO Shuaipeng1, CUIYanhua 3

1.Institute of Resources & Environment， Henan Polytechnic University， Jiaozuo  454000 ， Henan， China;2.Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization， Jiaozuo  454000 ， Henan， China;3.Guangxi Datengxia Water Control Project Development Co.， Ltd. ， Nanning  530000 ， Guangxi， China

Abstract:The study on water inrush risk assessment of coal floor after coal bed methane（CBM） development is very important in theoretical and practical studies for safe coal mining. From two aspects of rock mechanics and geomechanics ， theoretical analysis of water inrush from coal floor after CBM development was conducted. The Ordovician aquifer of No.15 coal seam of Chengzhuang coal mine was taken as an example to establish the in-rush risk assessment model. The results showed that after CBM development ， if the coal seam floor is connicted with the Ordovician aquifer ， the main controlling factors of water inrush from coal floor were in descending order of weight as minimum principal stress of floor ， water pressure of aquifer in floor ， effective thickness of aquifer ， and geological structure ； If the coal seam floor and the Ordovician aquifer were not connected ， the factors of water inrush from coal seam floor were as ； the water pressure of the bottom aquifer ， the effective thickness of the aquifer ， the richness of the aquifer ， the geological structure ， the rock fracture pressure ， and the minimum principal stress of the bottom plate ；The weight of the main control factors were determined by AHP. The fractal-vulnerability index method to was used conduct water inrush risk zoning. The western part of the study area was more vulnerable ， with the north-central part being the transition area and the southeast part of the mining area being the safe area. This method has reference value for water inrush risk assessment of coal floor after CBM development.

Key words:floor water inrush;risk assessment;fractal-vulnerability index method;Chengzhuang coal mine;CBM development

 煤层气开采后成庄矿15号煤层底板突水危险性评价_李建林.pdf