煤巷顶板的风化膨胀及其控制

通过Ｘ－射线衍射分析、电子显微镜照像分析和实验室试验，研究了沙曲矿煤层巷道顶板的风化膨胀性、膨胀变形规律及控制措施，工业性试验获得了预期的成功。研究对类似条件的巷道矿压控制有参考价值。     

煤巷顶板的风化膨胀及其控制

通过Ｘ－射线衍射分析、电子显微镜照像分析和实验室试验，研究了沙曲矿煤层巷道顶板的风化膨胀性、膨胀变形规律及控制措施，工业性试验获得了预期的成功。研究对类似条件的巷道矿压控制有参考价值。     

深井底板岩巷的围岩破裂范围

在大型平面应变试验对受采动影响的深井底板岩石巷道围岩破裂范围进行了模拟试验研究，获得了破裂带厚度与巷道距煤层底板距离的关系，为深井底板岩巷布置的定量支护设计提供了实验依据。     

深井底板岩巷的围岩破裂范围

在大型平面应变试验台上对受采动影响的深井底板岩石巷道围岩破裂范围进行了模拟试验研究，获得了破裂带厚度与巷道距煤层底板距离的关系，为深井底板岩巷布置的定量支护设计提供了实验依据     

APPLICATION OF THE ROOF DISTURBANCETO MONITORING AND PREDICTINGTHE GROUND PRESSURE

Based on study of the influence of main roof fracture on ground pressure,this paper considered the immediate roof as a semi-infinite long beam on a Winkler elastic foundation. In the model the coal seam is the foundation and the pressure caused by rnian roof deflection is the load.Having solved the model and analyzed relevant factors,the authors indicate that the disturbance caused by the breakage of the mian roof can be observed in both gates of iongwaii face and explain why it can be. The paper points out that the applicability of the method to obtain the disturbance information by measuring the loads on supports is wider than that by measuring the roof convergence rate. The results are useful for monitoring and predicting ground pressure.     

THEORETICAL ANALYSIS OF THE STABILITY OF A DEEP ROADWAY

In this paper the thickness of a broken zone, a state parameter of roadway surrounding rock, is used as the index to evaluate the stability of surrounding rock of a deep roadway. The paper gives a theoretic formula for calculating the thickness of the broken zone. The author points out that not only the ultimate strength of rockmass but its residual strength and strain-softening level all have a great influence on the stability of surrounding rock of a deep roadway. The peper′s results show that to reinforce surrounding rock, raise its residual strength and lower its strain-softening level should be taken as a basic requirement for supports of a deep roadway. In addition, the research also indicates that it is impossible for roadway supports to change surrounding rock states of a deep roadway, so it is certain for them to work in a broken state. For this reason, a sufficient yieldable quantity is necessary for roadway supports used in deep mining.     

破裂状态围岩巷道变形量计算的几何方法

基于岩石破裂后体积膨胀和巷道变形主要是由破裂区围岩体积膨胀引起的事实,提出了一种新的巷道变形量计算法——几何计算法．新方法根据破裂区围岩破裂膨胀前后的体积关系确定巷道变形量,适用于任何断面形状的巷道．     

深井动压岩巷锚喷网加固研究

深井动压岩巷加固或返修一般根据经验选取金属支架，造成巷迟成本增加、断面变小等。本文根据实测松动圈分析、研究采动次数、岩性对松动圈的影响，并依据松动圈理论设计锚喷网支护参数，进行工业性试验并获得成功，取得了显著的社会、经济效益，对于指导受采动影响巷道加固或返修具有普遍的实践意义。     

深井巷道围岩松动圈影响因素实测分析及控制技术研究

对千米深井,按５个水平、不同岩性及是否受采动影响的围岩松动实测分析揭示了松动圈与开采深度、围岩强度、等的关系,进而探讨了深井、松动圈巷道合理控制技术,据此行了工业性试验,取得良好的效果。     

巷道围岩松动圈随采深变化的规律

本文通过对开滦赵各庄矿一些水平、不同岩性的超声波法实测巷道围岩松动圈的资料分析，获得了不受采动影响的底板岩巷围岩松动圈随采深变化的规律，并给出了相应的经验公式。此项成果可用于指导该矿深部巷道的支护实践，同时对整个开滦矿区今后的深部开采具有参考价值。