建井技术
建井技術
건정기술
2014年
z1期
93-96
,共4页
副立井%防治水%地面预注浆%施工设计
副立井%防治水%地麵預註漿%施工設計
부립정%방치수%지면예주장%시공설계
auxiliary vertical shaft%water control%ground pre-grouting%construction design
凤凰山铁矿副立井，地层为寒武系灰岩、页岩、石英砂岩，岩性坚硬且破碎，出露于地表，含水丰富。治水方法，采取地面预注浆法。施工中，针对破碎带的硬岩的造孔，选择了合理的钻进参数和适合该地层的钻头。注浆时，地面发生跑浆，裂隙中的泥质、松散的砂粒，阻碍浆液的扩散，采取了相应的技术措施，对常用的注浆参数，结合水文地质特征进行了调整，可供相似地层的防治水借鉴。
鳳凰山鐵礦副立井，地層為寒武繫灰巖、頁巖、石英砂巖，巖性堅硬且破碎，齣露于地錶，含水豐富。治水方法，採取地麵預註漿法。施工中，針對破碎帶的硬巖的造孔，選擇瞭閤理的鑽進參數和適閤該地層的鑽頭。註漿時，地麵髮生跑漿，裂隙中的泥質、鬆散的砂粒，阻礙漿液的擴散，採取瞭相應的技術措施，對常用的註漿參數，結閤水文地質特徵進行瞭調整，可供相似地層的防治水藉鑒。
봉황산철광부립정，지층위한무계회암、혈암、석영사암，암성견경차파쇄，출로우지표，함수봉부。치수방법，채취지면예주장법。시공중，침대파쇄대적경암적조공，선택료합리적찬진삼수화괄합해지층적찬두。주장시，지면발생포장，렬극중적니질、송산적사립，조애장액적확산，채취료상응적기술조시，대상용적주장삼수，결합수문지질특정진행료조정，가공상사지층적방치수차감。
The strata in the phoenix mountain iron mine auxiliary vertical shaft is Cambrian limestone , shale ,quartz sandstone ;the lithology is hard and crushing which exposed on the earth’s surface with rich water.The method of water control adopts ground grouting.During the construction ,the hole was aimed at hard rock of crushing zone ;the reasonable drilling paramenters and the bit w hich is suitable for this strata was choosed.The corresponding technical measures are taken when the slurry run away and the diffusion of slurry is hindered by the mud and loose sand in the fracture ;the commonly used grouting parameters is adjusted in combination with hydrogeological characteristics during construc-tion ,which can be referenced by water controlling of similar strata.
