开展浅埋薄基岩8m超大采高综采面开采沉陷与矿压规律协同分析具有重要价值，本文以张家峁煤矿2203综采面为工程背景，采用理论分析、现场监测以及数值模拟等手段对2203超大采高综采面开采沉陷和矿压规律进行分析研究，主要研究内容及成果如下：

（1）完成了顶板岩石物理力学试验，确定了2203综采面顶板岩性及相关试验参数；研究表明：开采方法、采高采深、顶板岩性及开采速度等为影响地表裂缝发育的主要因素。

（2）完成了2203超大采高综采面“三机”配套验证及初次来压步距和周期来压步距的理论预测及实测研究，结果表明：2203综采面“三机”配套合理，可以满足综采面的安全生产并保证其生产能力；理论预测2203综采面初次来压步距为31.76m，综采面周期来压步距为12.97m；实测初次来压步距为24m；基本顶周期来压步距10.1~37m，平均15.46m，初次来压步距及周期来压步距理论预测与现场观测基本吻合。通过分析得出：2203超大采高综采面矿压规律表现为：来压区域性明显、来压急增阻、非来压恒阻、大小周期来压。

（3）完成了顺槽围岩破坏规律现场监测研究。2203综采面顺槽松动圈演化规律监测得出2203综采面顺槽围岩松动圈受采动影响变化范围小，顶板松动圈范围为1.1m左右，帮部松动圈范围为0.8m左右，锚杆锚索受力特性监测研究得出：顶板锚索受力增加量和增加速率均大于锚杆，并且开采帮锚杆受力略大于非开采帮锚杆受力，结合现场顺槽支护设计分析可得：锚杆锚索支护强度满足综采面安全回采的需求，顺槽支护参数设计合理。

（4）完成了概率积分法对地表变形的预测，得到矿区开采沉陷参数；根据得到的开采沉陷参数，正算出沉陷盆地边界模拟结果在-80mm~110mm之间，通过SAR影像可监测到的沉陷盆地边缘最大累积沉降量为107.5mm，与概率积分法计算结果相吻合，通过已知GNSS实测值，对InSAR结果失相干区域进行插值计算，绘制出张家峁2203综采面地表移动变形等值线图；分析得出：地表开采形成“漏斗型”盆地，综采面下沉系数及下沉速度大，地表变形活跃；地表裂缝数量多、发育明显，主要集中在综采面开采范围内，呈环状连续形态分布。通过UDEC对2203综采面开采进行模拟，研究表明：盆地中心出现最大下沉量为4708mm，与GNSS实测的最大下沉量4931.79mm基本一致，综采面顶板底板出现多个拱形应力场，综采面前方支承压力值在17MPa~23MPa进行小幅度的波动。

（5）基于GNSS自动监测的地表移动变形数据，完成了2203综采面地表变形角量参数的计算；得出2203综采面启动距为26.5m、最大下沉值为4931mm、最大下沉系数为0.61、最大水平移动值为1944mm、超前影响角为60.17°、最大下沉速度为860.63mm/d、最大下沉速度滞后角为69.74°。应用地表移动角量参数，完成了开采沉陷与矿压规律的分析，得出：地表下沉速度>10mm/d属于快速沉降阶段，期间综采工作面来压次数为3~4次，第1次来压结束后顶板垮落，导致地表对应监测点进入快速沉降阶段；快速沉降期间综采工作面来压会导致地表沉降速率达到最大值；快速沉降期间最后一次来压之后，地表对应点的沉降速度小于10mm/d，沉降趋于稳定，后续来压对此监测点影响逐渐减小。

It is of great value to carry out the cooperative analysis of mining subsidence and mine pressure law in 8m super large mining height fully mechanized mining face with shallow buried thin bedrock. Based on the engineering background of 2203 fully mechanized mining face in Zhangjiamao Coal Mine, this paper analyzes and studies the mining subsidence and mine pressure law of 2203 super large mining height fully mechanized mining face by means of theoretical analysis, field monitoring and numerical simulation. The main research contents and results are as follows :

The physical and mechanical test of roof rock was completed, and the roof lithology and related test parameters of 2203 fully mechanized mining face were determined. The research shows that the mining method, mining depth, roof lithology and mining speed are the main factors affecting the development of surface cracks.

The matching verification of 'three machines' in 2203 fully mechanized mining face with super large mining height and the theoretical prediction and actual measurement of initial weighting step and periodic weighting step are completed. The results show that the matching of 'three machines' in 2203 fully mechanized mining face is reasonable, which can meet the safety production of fully mechanized mining face and ensure its production capacity. It is theoretically predicted that the initial weighting step of 2203 fully mechanized mining face is 31.76 m, and the periodic weighting step of fully mechanized mining face is 12.97m. The measured first weighting step distance is 24m ; the periodic weighting step of the main roof is 10.1-37m, with an average of 15.46m. The theoretical prediction of the initial weighting step and the periodic weighting step is basically consistent with the field observation. Through analysis, it is concluded that the mine pressure law of 2203 super-large mining height fully mechanized mining face is : obvious regional pressure, rapid pressure increase resistance, non-pressure constant resistance, large and small periodic pressure.

The field monitoring study on the failure law of the surrounding rock is completed. The monitoring of the evolution law of the loose circle of the 2203 fully mechanized mining face shows that the loose circle of the surrounding rock of the 2203 fully mechanized mining face is affected by mining. The range of the loose circle of the roof is about 1.1m, and the range of the loose circle of the side is about 0.8m. The monitoring of the stress characteristics of the anchor cable shows that the increase and increase rate of the stress of the roof anchor cable are greater than that of the anchor cable, and the stress of the mining side anchor is slightly greater than that of the non-mining side anchor. Combined with the design and analysis of the on-site crossheading support, it can be concluded that the support strength of the anchor cable meets the needs of the safe mining of the fully mechanized mining face, and the design of the crossheading support parameters is reasonable.

The prediction of surface deformation by probability integral method is completed, and the mining subsidence parameters of mining area are obtained. According to the obtained mining subsidence parameters, the boundary simulation results of the subsidence basin are calculated to be between -80mm and 110mm. The maximum cumulative settlement of the subsidence basin edge that can be monitored by SAR image is 107.5mm, which is consistent with the calculation results of the probability integral method. Through the known GNSS measured values, the interpolation calculation of the incoherent area of the InSAR results is carried out, and the surface movement and deformation contour map of Zhangjiamao 2203 fully mechanized mining face is drawn. The analysis shows that the surface mining forms a 'funnel-type' basin, the subsidence coefficient and subsidence speed of the fully mechanized mining face are large, and the surface deformation is active ; the number of surface cracks is large and the development is obvious. They are mainly concentrated in the mining area of fully mechanized mining face, and are distributed in a circular discontinuous form. The UDEC was used to simulate the mining of 2203 fully mechanized mining face. The results show that the maximum subsidence in the center of the basin is 4708mm, which is basically consistent with the maximum subsidence measured by GNSS 4931.79mm. There are multiple arch stress fields in the roof and floor of the fully mechanized mining face, and the abutment pressure value in front of the fully mechanized mining face fluctuates slightly from 17MPa to 23MPa.

Based on the surface movement and deformation data of GNSS automatic monitoring, the calculation of surface deformation angle parameters of 2203 fully mechanized mining face is completed. It is concluded that the starting distance of 2203 fully mechanized mining face is 26.5m, the maximum subsidence value is 4931mm, the maximum subsidence coefficient is 0.61, the maximum horizontal movement value is 1944mm, the leading influence angle is 60.17°, the maximum subsidence speed is 860.63mm/d, and the maximum subsidence speed lag angle is 69.74°. The analysis of mining subsidence and mine pressure law is completed by using the surface movement angle parameter. It is concluded that the surface subsidence speed >10mm/d belongs to the rapid subsidence stage. During the period, the number of weighting times of the fully mechanized mining face is 3-4 times. After the first weighting, the roof collapses, resulting in the corresponding monitoring points on the surface entering the rapid subsidence stage. During the rapid settlement, the pressure of the fully mechanized mining face will lead to the maximum surface settlement rate ; after the last weighting during the rapid settlement, the settlement velocity of the corresponding points on the surface is less than 10mm/d, and the settlement tends to be stable. The influence of subsequent weighting on this monitoring point gradually decreases.