School of Geosciences and Surveying Engineering, China University of Mining and Technology-Beijing
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology-Beijing
Huaneng Yunnan Diandong Mining Branch Co., Ltd.
Huaneng Coal Technology Research Co., Ltd.
Beijing Yubo Xinchuang Geophysical Technology Co., Ltd.

在我国西南地区，地质条件复杂，煤层瓦斯储量丰富，矿井水文地质条件多变，地质预报是保障矿井安全生产的重中之重。为有效探明矿井巷道前方的隐伏构造，仅依靠单一物探方法，受井下探测环境限制，探测效果往往不能满足生产需求。以滇东矿区雨汪煤矿首采工作面为例，结合当前矿井开采工艺，采用探地雷达与井下二维地震相结合的方法，对巷道前方隐伏构造进行综合预测预报研究。在顶板瓦斯抽采巷采用井下二维地震进行底板探测，获取巷道底板下煤层构造赋存信息。利用工作面顶板瓦斯抽采巷和邻近掘进巷道的空间位置关系，结合研究区构造发育规律，将解释构造短距离推理延伸至掘进巷道，作为掘进巷道构造分布预测依据。随后，根据掘进巷道的掘进进尺，在巷道掘井工作面采用探地雷达进行超前探测。对比分析探地雷达与地震数据，修正构造解释位置，排除井下噪音的异常解释。最终生成一个高精度地质模型，指导矿井生产。经研究区揭露验证分析，本研究方法的预测准确率高达90%，且误差小于1 m。

In the southwest of China, geological conditions are complex, coal seam gas reserves are abundant, and mine hydrogeological conditions are variable, so geological forecasting is a top priority to ensure safe mine production. To effectively detect the hidden structure in front of the mine roadway, only a single geophysical method is used, which is limited by the underground detection environment, and the detection effect often cannot meet the production needs. In this paper, taking the first mining face of Yuwang Coal Mine in the East Yunnan mining area as an example, combined with the current mine mining technology, the method of combining ground penetrating radar and underground two-dimensional seismic is used to comprehensively predict and predict the hidden structure in front of the roadway. In the roof gas drainage roadway, the underground two-dimensional seismic is used for floor detection, and the occurrence information of coal seam structure under the roadway floor is obtained. Using the spatial relationship between the gas drainage roadway on the roof of the working face and the adjacent driving roadway, combined with the structural development law of the study area, the interpretation structure is extended to the driving roadway in a short distance as the basis for predicting the structure distribution of the driving roadway. Then, according to the footage of the excavated roadway, the ground penetrating radar is used for advanced detection on the face of the roadway. Compare and analyze ground penetrating radar and seismic data, correct the position of structural interpretation, and eliminate abnormal variation caused by downhole noise. Finally, a high-precision geological model is generated to guide mine production. According to the open verification and analysis in the research area, the prediction accuracy of the research method in this paper is as high as 90%, and the error is less than 1 m.

中国华能企业委托科研资助项目（HNKJ20H35）；国家自然科学基金资助项目（52074306）；国家重点研发计划资助项目（2019YFC1805504）

崔　凡，王　然，陈存强，等. 滇东复杂地质条件探地雷达与井下地震综合超前预测小构造[J]. 煤炭科学技术，2023，51（S1）：222−230.

CUI Fan，WANG Ran，CHEN Cunqiang，et al. Integrated advanced prediction of small structures by ground penetrating radar and downhole seismic with complex geological conditions in East Yunnan[J]. Coal Science and Technology，2023，51（S1）：222−230.