roof rock的例句大全

controlled stability of rock bolting roadways based on roof abscission layer monitor

基于顶板离层监测的锚固巷道稳定性控制

prevention of roof-fall accident at heading face of coal roadway supported by rock bolt

煤巷锚杆支护巷道迎头区冒顶的预防

study of the roof-bolting method instead of bolting and shotcrething in supporting of rock roadway

岩石巷道中锚杆支护系统代替锚喷支护系统的研究

since lump size of upper-immediate roof is large, a semi-arch equilibrium structure of the stratum-rock sometimes can be formed.

上位直接顶岩块强度较高、块度较大，容易形成“岩-矸”半拱式平衡结构。

dangerous liaisons analysis of the influence on rock burst caused by hard roof

坚硬顶板对冲击矿压危险的影响分析

The caving of thick and strong roof stratum, key stratum, causes tremendous rock pressure in mine.

采场上覆岩层中的厚硬岩层, 即厚硬关键层, 其冒落会造成剧烈的矿山压力显现.

Roof falling, floor heave of roadway and pillar failure are important rock mechanical problems in mining.

顶板冒落 、 巷道底鼓和矿柱破坏是采矿过程中的重要岩石力学问题.

Study on Gas Extracting Technology of Gas Destressing and Gas Storage from Fractures in Surrounding Rock of Roof and Floor of the First-mined Seams

首采煤层顶底板围岩裂隙内瓦斯储集及卸压瓦斯抽采技术研究

With grouting-bolting as the kernel, pre-stressed anchor rope and anchor as the auxiliary structure, the three-bolting combined supporting system combining pressure-relief technology of roof control and laneway floor heave control technology solved the supporting stability problem in deep-seated soft rock roadway.

通过以锚注为核心，预应力锚索和锚杆为辅助支护结构的三锚联合支护技术，结合控顶放压技术和底臌控制技术解决了深部软岩巷道的稳定性控制问题。

Because of a mass of magmatic rock intrusion, rock crevice water existing, broken roof and broken floor, the environment which is useful to gas loss generates.

而大量的岩浆岩的侵入，岩溶裂隙水的存在以及破碎的顶底板，均形成了有利于瓦斯释放的环境。

As the exploIt'strength increasing, rock-burst may occur under the condition of non-hard roof.

即使 是非 坚硬顶板条件,当开采强度加大时, 也将发生冲击地压灾害.

In Fully Mechanized Caving, the motion of the cover roof and its rock pressure phenomenon is comparatively violent for the greatly thickness extracted of coal seam in one time.

综放开采法一次采出厚度大，工作面顶板运动及其矿压显现也相对剧烈。

The roof collapsed in a roar of rock and rubble

屋顶轰隆一声塌了下来，碎石瓦砾落了一地。

The main factors effecting of slipping area along the bed rock and roof separation and failure area and the major avenue of damage surrounding rock caused by mining are analyzed in this paper.

分析了影响沿底座滑区和顶板离层破坏区破坏的主要因素及其采动损害传递的主途径。